Your demonstration was clear and concise. No wasted commentary. The quality of the vacuum method speaks for itself. I note the high quality of your Cory coffeepot. And the absence of the usual gasket between the two chambers of the pot.
Mark: I’ve watched this video of yours probably 20 times or more now, and I truly never get tired of it. That vintage Cory DCG 6 To 8 Cup Royal Rubberless Vacuum Coffee Maker of yours is quite the stunner - even though I’ve been able to ascertain that it’s made up from a first edition brewing chamber of that size model from the late 1940’s, and a last edition carafe of the same model from the mid 1950’s. Your way of presentation is so very down to earth spot on. I’ve done a considerable amount of research online regarding these “Rubberless” all glass vacuum coffee makers, and fully confirmed that Harvey Cory, the founder of the Cory Corporation is the only one who ever came up with this unique all glass version of these vacuum brewers. Two months ago I beat out two other last 10 second high bidders on eBay for a never used, brand new early edition Vintage Cory DIG 10 To 12 Cup Imperial Rubberless Vacuum Coffee Maker, and just like watching that video of yours I cant stop even now sitting down just to watch this baby go through it’s paces each time I make coffee in it either. In the online threads on these Rubberless Corys I came across erroneous statements that the units only performed correctly around 80% of the time. I also noted the procedures those people described that they employed. So I decided to uncover the Cory Corporation’s official directions for making coffee in the units which I was finally able to come across, and save. I’ve never operated my unit any other way since then, and consistently obtain flawless results every single time. The correct, specific way Cory tells you to do everything is as follows: remove the Bakelite lid/stand from the brewing chamber, remove the brewing chamber from the carafe, placing the chamber’s bottom tube in the stand. Then remove the glass Cory Filter Rod from the chamber, and wet the middle, and lower half of it, then replace it in the chamber. Pour your selected amount of ground coffee in the chamber. At the same time you’ve already poured the selected appropriate amount of water in the carafe, and with its lid closed are bringing the water to a boil in it. When the water is at a full boil, lower the heat source to where it is boiling less, then flip the carafe lid open, followed immediately by removing the brewing chamber from the lid/stand , and placing it carefully back atop the carafe, keeping it in place with both hands while the water below begins immediately to be forced up into the brewing chamber in a matter of seconds, and then begins churning the coffee grounds. Take either a plastic or wooden spoon only, and gently stir the contents in the chamber around the upper half of the glass filter rod (never ever use any metal utensil as any possible resultant scratches no matter how fine will eventually compromise the integrity of the thin borosilicate (Pyrex) glass causing a safety issue where it can break. After two to three minutes turn the heat source off, and remove the maker from it as you so choose. The rest is just as you have shown in this video of yours. When it comes to producing the best cup of java all three sizes of these truly one of a kind Rubberless vacuum coffee makers stand alone!!! They truly do beat out every other modern device, and every modern version of these type of brewers!!! The cups are always superb, beyond expectation even, and as I’ve already stated earlier in so many words, that Imperial I won consistently performs without a single hitch each, and every last time!
I thoroughly read the article you supplied the link to. The gasketless Sytrax was an interesting design, but as the writer described, it is very unreliable on several levels. It never will hold a candle to the Cory Rubberless’s three size models for consistently reliable, superb results each, and every last time, but only when the user follows the Cory Corporation’s exhaustively tried, and true method of operation which is very easy to achieve.
Very rarely a copy of the original instruction pamphlet is listed - more often than not as an accompaniment with dead stock or never used Rubberless units put up for sake on eBay, and on very extreme cases listed by itself.
Thanks, Mark, for the insiration. Today I received my to individual purchases for the DCL and DCU. Works like a charm. Don't even have to wet the parts-the steam does it for me!
I have one of these. I purchased it from a yard sale for $2. The Corey Vacuum coffee maker can make a great cup of coffee from even a cheap grind of coffee. Not bad for 200 year old technology.
What’s wrong with Starbucks? I get a Grande Chai Vanilla Iced Latte with 2 pumps caramel, half soy half milk, 1 pump vanilla, 200 degrees, extra ice, in a Venti cup and it only costs $17.65.
@@CookingWithCash If I remember correctly, and I do, Starbucks was selling this style of coffee pot 10 years ago? It was made of glass or plastic, clear, but each was a different color. Not sure, wasn't there to tough anything. I don't do Starbucks, I was a Coffee Walk, so to speak, with my Boss. I do get your humor though, $17.65 for a cup of coffee with all of the fixings.
Many thanks for the advice about wetting the glass surfaces. For the longest time I couldn't figure out why my Cory coffee maker refused to draw the coffee down. It finally works as it's supposed to!
This video has helped me a great deal with my gasket less Cory coffee maker. Before, the draw down would take 15 to 20 minutes. After watching your video and following the instructions, the draw down takes about 5 minutes. There is no bubbling at the end, though. Thank you for posting!
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
I've had mine for almost twenty years. Got the entire set from an elderly gentleman's estate sale for $3. Makes the best coffee, but only if you start with good coffee.
compared to,say, French press or Moka Pot?? (-i've heard over and over that "percolating" is the absolute worst thing to do with coffee, although here it happens only once.....)
Sir, we have a MOD 500S Stainless Nicro. Very similar but, it's aluminum. Pot was my Grandmothers and we use it everyday. It was fascinating to see how the most amazing coffee pot ever made works. You posted this 7 years ago. I apologize for just finding you.
I've been using my gasketless for about two weeks now, and can't seem to get it to where it doesn't stall. If I put the top on while the water is still barely warm, it starts to come up. So... I've tried waiting until it nearly boils, and the water draws up quickly, but won't draw down very quickly.? What am I doing wrong?
thanks! was testing one to sell on ebay and couldn't figure why the coffee wouldn't go back down into the pot lol now i got it. I considered keeping it but it seems so fragile and top heavy that i'm pretty sure it will end up broke in a month
Your welcome, I make my coffee just about every morning with a vacuum pot.... It makes really great coffee and slows me down in the morning before enjoying my first cup and the day ; )
for this unit to work perfectly don't grind the coffee too fine. after about 20 tries and ready to throw in the trash i have it figured out and that was the issue
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
Came across an original, boxed Cory rubberless percolator, with instructions, filter ball, handle, lid, and an electric base for heating/brewing. Haven't tried it, so will take your word for how good the coffee is. Found two electric perc's, an aluminum and a silver, the old tall ones, tried them, great coffee. Recall my mother using the silver one while entertaining friends and filling with marbles and water (not sure if she added baking soda -- anyone?) to clean the inside -- the marbles came out with the coffee stain, leaving the pot spotless.
Do you know if different vacuum coffee makers work differently? Mom always brought the water to a boil, removed it from the heat added the top part, the water shot up into the coffee almost instantly. She stirred it around and the coffee dropped back down into the pot in less than 5 minutes. With that her vacuum coffee pot had a rubber gasket between the two pots or chambers. Does the gasket make a difference?
I have this same pot. I notice you put the upper on at the beginning of the process. I wait until the water temp is near 185-190F (close to brew temp) before I put the upper on and the coffee meets water. However, I do get stalls sometimes. I suspect your method might be better to prevent stalls. Great video, thanks for sharing!
Yes, these all class pots (no rubber seal) can be tricky, I use both styles, but found the glass on glass seal it is even more critical to allow the air in the lower to have enough time to expand and force the water up the tube. Thats why I place it on top with cold water on the bottom. Love the coffee it makes!
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
@@ShantelLee-ng7en if you want to be safe, put a pan in-between the burner and the pot, but there shouldn’t be a problem there is water in the pot so it can only het as hot as the water. Don’t run it dry!
Many old cory pots and others with a rubber seal no longer work. The seal dries out. I have found a way to rejuvinate the rubber, as long as it is not cracked. Simply buy a bottle of transmission seal conditioner, place the seal in a pot on the stove, put seal conditioner in and turn the heat on low, cover leave for a couple of hours. Remove lightly dry and leave it sit overnight, wash next day and use.
I've seen it where people wait for boiling, then add coffee. My grandmother used to do it your way. Not sure which is right but people raved about her coffee.
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
Cory made their Rubberless coffee makers in three sizes. The DNG Petite Rubberless 4 cup using DNU upper and DNL lower. The DCG Royal Rubberless 8 cup Royal Rubberless using DCU and DCL glass parts and the DIG Imperial Rubberless 12 cup using DIU upper and DIL lower glass. Based on advertisements they appeared after the war rather than being a war time attempt to save rubber. The earliest advertisement I have seen for them is 1947ish and the last from a 1955 wholesale catalog. I copied, and pasted the statement above for you from a thread on a website on coffee. Here is the link to the full post: www.home-barista.com/brewing/cory-rubberless-vacuum-brewer-t35958.html
Harvey Cory (6 March 1882 - 16 October 1949) Harvey CoryCory Coffee Maker PatentHarvey Cory was born on the 6th of March 1882 in Autaugaville, Autauga County, AL. Cory was founder and president of the "Cory Glass Coffee Brewer Corporation", manufacturer of the famous Cory Class Vacuum Coffee Brewer. Harvey Cory, and Margaret Maud Markell were married on the 27th of November 1906 in Pittsburgh, Allegheny County, PA. They had one child, Elizabeth Emma Cory, born on the 3rd of February 1908 in Pittsburgh, Allegheny County, PA. Cory’s wife, Maude, was born on the 1st of September 1886 in Pennsylvania. Cory moved to Chicago where he invented, and manufactured the "Cory Glass Vacuum Coffee Brewer." In 1933 Cory founded the "Harvey Cory's Glass Coffee Brewer Corporation ," (later renamed the Cory Corporation.). The enterprise's subsequent coffee percolators led the market for half a century. The first patent filed by Harvey Cory for a vacuum coffee brewer was in 1933, and was quickly followed by a series of new designs, many of which focused on peripheral technical elements of the brewers - handles, covers, filters, and so forth. Cory’s 1934 patent illustrates both the "Fast-Flo" filter which shipped with many early Cory brewers, as well as an alternate design which showed up later on vacuum pots sold by General Electric. It is interesting to note that what is arguably the most significant innovation ascribed to Cory, namely the universal all glass vacuum coffee maker filter rod, was not invented by Harvey Cory himself, but by Raymond Kell of the MacBeth Evans Glass Company in 1932. The initial familiar Cory design was patented in 1939, while the similar, albeit glass and metal Silex "Lox-In" filter rod was not submitted for patent until 1946. In 1942, Harvey Cory submitted a patent to the US Patent Office for his three sizes of "Rubberless" vacuum coffee maker (see illustration below). This design completely dispenses with the perennial rubber gasket always employed (even in current manufacturers’ models) to form an airtight seal between the upper brewing chamber, and lower carafe vessel of a vacuum coffee maker by means of instead two formed, slightly protruding, ring shaped mechanically ground upper and lower mated glass surfaces. The resultant seal when pre-moistened is rendered fluid tight, and retained in that manner initially by the combined weight of the upper bowl, glass filter rod, and ground coffee which in turn is further progressively reinforced by the ever increasing weight of the heat applied water in the lower carafe chamber being forced by the rising enclosed pressure up into the coffee maker’s upper brewing chamber. image1.jpeg That same year of 1942, Harvey Cory retired. Then James Alsdorf and a group of friends scraped up enough money to buy control of the corporation. It was not until after World War II was over that the Cory Corporation under Alsdorf’s control began production of the retired Cory’s 1942 patented three size Rubberless vacuum coffee maker design. Harvey Cory died on the 16 of October, 1949 in Prescott, Yavapai, Arizona and is buried there in Mountain View Cemetery. Cory’s widow, Maude died in June of 1975 and is also buried in Mountain View Cemetery. Their daughter, Elizabeth married Earnest August (1904 - 1980.) She passed away on the 17 of October 1994 in Prescott, Arizona. Like her parents, Elizabeth, as well as her husband, Earnest are both buried in Mountain View Cemetery.
And as anyone can plainly read in that biography the information you are relying on is not correct. The Rubberless Cory was not out into production until after the war.
I didn't realize this didn't have a rubber gasket!! I need one. This would look cool sitting with my flameware Pyrex percolator. I see a taste testing in the making!!
I have one of these and didn't know how to use it. I thought the black thing with the protrusion was a lid of some kind. Now I see it holds the top half. Duh....
I'm standing here in the Goodwill Store. Just found a BRAND NEW CORY DRL 8 cup for $4. Never used. Clean as a whistle! Had to log on to see how to properly use it. Thanks for the video! Headed home for a good cup of coffee!
Peter, just bought a brand new one at Goodwill for $4! Check your thrift stores, you'll be amazed at the stuff in these stores.....FOR CHEAP!!! Salvation Army stores, too! ♡
How long does it take to draw the coffee into lower pot. It looked like about a minute and a half from your video but then I noticed you did a cut at one point when the bottom container was about half full. How much time did you cut out.
Ecospider5 It really depends on a couple things, sometimes you get minor leaks with the vacuum between the surfaces, and the most common reason would be your grind is too fine and the seal leak becomes the lesser resistance rather then drawing through the grounds, you should be able to hear the leaks if you have them.
I recently purchased one of these at the thrift store (for 50 cents), and I have yet to get it to work properly. I followed your instructions, but I hear air sucking in through the "gasket" when the lower chamber starts to cool which weakens the vacuum, and it takes 20 minutes for the coffee to come down, and even then, it doesn't all come down. Any idea what I'm doing wrong?
This particular Cory in video doesn’t have a gasket, it’s all glass contact, if you have a rubber gasket and it’s leaking, try turning heat to lower setting, and if you hear air leaking pressing down within a rocking back and forth till leaking stops is what I do with the gasket types. Hope that helps
@@mwmundt Thank you for getting back to me. I should have made myself clearer. I put "gasket" in quotes to mean the area where the upper and lower vessels contact each other. The surface between them is ground glass. The coffee maker I have is exactly like yours in the video, a Cory rubberless vacuum pot. If you have any suggestions I would be very grateful. Thanks.
Carl L. I see, the all ground glass ones require much more patience, and a very low flame or heat, as a higher temp will blow buy the glass on glass seal, I wet the surface with my finger, and rotate and look for a solid color for a seal then use low temperature for entire process, if it leaks during the heating stage it generally will leak on the cooling vacuum stage too, it’s a tricky seal. Good luck
I have a Silex that has a rubber gasket.. very awesomely cool coffee pot, but it smells bad and I believe it's imparting a ever so slight rubbery flavor into my coffee and it's very off-putting. I wish I could find someone to make me a silicone gasket for it. 😢
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
I give up. I have tried every conceivable way to coax coffee out of my rubberless Cory. The water either doesn't rise, or it rises partially and then sinks down, leaving me with brown tinted water and moist grounds, or it rises and takes 25 minutes to return to the bottom. The coffeemaker has a new place on the bottom shelf of the cupboard where it can stay until my next garage sale.
Much less complicated and much more easy to use and clean this VINTAGE vacuum coffee pot than the MODERN version that has over 200,000 hits on RUclips. Why? Maybe the MODERN version means selling more FILTERS etc. etc. ?
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
Your demonstration was clear and concise. No wasted commentary. The quality of the vacuum method speaks for itself. I note the high quality of your Cory coffeepot. And the absence of the usual gasket between the two chambers of the pot.
+geosutube
Thanks for the kind words
Mark
Mark: I’ve watched this video of yours probably 20 times or more now, and I truly never get tired of it. That vintage Cory DCG 6 To 8 Cup Royal Rubberless Vacuum Coffee Maker of yours is quite the stunner - even though I’ve been able to ascertain that it’s made up from a first edition brewing chamber of that size model from the late 1940’s, and a last edition carafe of the same model from the mid 1950’s. Your way of presentation is so very down to earth spot on. I’ve done a considerable amount of research online regarding these “Rubberless” all glass vacuum coffee makers, and fully confirmed that Harvey Cory, the founder of the Cory Corporation is the only one who ever came up with this unique all glass version of these vacuum brewers. Two months ago I beat out two other last 10 second high bidders on eBay for a never used, brand new early edition Vintage Cory DIG 10 To 12 Cup Imperial Rubberless Vacuum Coffee Maker, and just like watching that video of yours I cant stop even now sitting down just to watch this baby go through it’s paces each time I make coffee in it either. In the online threads on these Rubberless Corys I came across erroneous statements that the units only performed correctly around 80% of the time. I also noted the procedures those people described that they employed. So I decided to uncover the Cory Corporation’s official directions for making coffee in the units which I was finally able to come across, and save. I’ve never operated my unit any other way since then, and consistently obtain flawless results every single time. The correct, specific way Cory tells you to do everything is as follows: remove the Bakelite lid/stand from the brewing chamber, remove the brewing chamber from the carafe, placing the chamber’s bottom tube in the stand. Then remove the glass Cory Filter Rod from the chamber, and wet the middle, and lower half of it, then replace it in the chamber. Pour your selected amount of ground coffee in the chamber. At the same time you’ve already poured the selected appropriate amount of water in the carafe, and with its lid closed are bringing the water to a boil in it. When the water is at a full boil, lower the heat source to where it is boiling less, then flip the carafe lid open, followed immediately by removing the brewing chamber from the lid/stand , and placing it carefully back atop the carafe, keeping it in place with both hands while the water below begins immediately to be forced up into the brewing chamber in a matter of seconds, and then begins churning the coffee grounds. Take either a plastic or wooden spoon only, and gently stir the contents in the chamber around the upper half of the glass filter rod (never ever use any metal utensil as any possible resultant scratches no matter how fine will eventually compromise the integrity of the thin borosilicate (Pyrex) glass causing a safety issue where it can break. After two to three minutes turn the heat source off, and remove the maker from it as you so choose. The rest is just as you have shown in this video of yours. When it comes to producing the best cup of java all three sizes of these truly one of a kind Rubberless vacuum coffee makers stand alone!!! They truly do beat out every other modern device, and every modern version of these type of brewers!!! The cups are always superb, beyond expectation even, and as I’ve already stated earlier in so many words, that Imperial I won consistently performs without a single hitch each, and every last time!
Thank you for taking the time that you did to research this. I am excited to hunt one of these down and use it in my coffee shop here in Alaska!
I thoroughly read the article you supplied the link to. The gasketless Sytrax was an interesting design, but as the writer described, it is very unreliable on several levels. It never will hold a candle to the Cory Rubberless’s three size models for consistently reliable, superb results each, and every last time, but only when the user follows the Cory Corporation’s exhaustively tried, and true method of operation which is very easy to achieve.
Thanks for your description of the correct way to use. Where can one find Cory’s instructions for these rubberless models?
Very rarely a copy of the original instruction pamphlet is listed - more often than not as an accompaniment with dead stock or never used Rubberless units put up for sake on eBay, and on very extreme cases listed by itself.
@@ironsidefan Would you scan and share a copy?
My 80 year old boss told me today that his mom used to use one of these to make coffee and thanks to your video I knew what he was talking about.
Thank you so much for the video! It is the best one I've seen for this percolator on youtube. I have learned a lot. Thanks again.
Thanks, Mark, for the insiration. Today I received my to individual purchases for the DCL and DCU. Works like a charm. Don't even have to wet the parts-the steam does it for me!
I have one of these. I purchased it from a yard sale for $2. The Corey Vacuum coffee maker can make a great cup of coffee from even a cheap grind of coffee. Not bad for 200 year old technology.
My dad had one of these when I was a kid best tasting coffee I’ve ever had. No filters, no stupid little capsules no friggin Starbucks. Just coffee
What’s wrong with Starbucks? I get a Grande Chai Vanilla Iced Latte with 2 pumps caramel, half soy half milk, 1 pump vanilla, 200 degrees, extra ice, in a Venti cup and it only costs $17.65.
@@CookingWithCash Lol. Exactly! Moloch always wants more. Lol
@@janathefirst who is Moloch???
@@CookingWithCash If I remember correctly, and I do, Starbucks was selling this style of coffee pot 10 years ago? It was made of glass or plastic, clear, but each was a different color. Not sure, wasn't there to tough anything. I don't do Starbucks, I was a Coffee Walk, so to speak, with my Boss. I do get your humor though, $17.65 for a cup of coffee with all of the fixings.
Moloch was the false pagan fire god the Israelites in the Bible sacrificed their children to.
Many thanks for the advice about wetting the glass surfaces. For the longest time I couldn't figure out why my Cory coffee maker refused to draw the coffee down.
It finally works as it's supposed to!
This video has helped me a great deal with my gasket less Cory coffee maker. Before, the draw down would take 15 to 20 minutes. After watching your video and following the instructions, the draw down takes about 5 minutes. There is no bubbling at the end, though. Thank you for posting!
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
I love these. I own 5, including a Vaculator I just found this morning. I don't own a Cory...yet.
II am 51 years old and grew up on this technology and still use it today, but my family used it to make tea, NOT coffee...best tea ever.
Hi, how do you prepare tea using this pot?
@@Misslilipoh Add the desired amount of tea bags or loose tea into the top of unit and prepare just as if you were making coffee.
I've had mine for almost twenty years. Got the entire set from an elderly gentleman's estate sale for $3. Makes the best coffee, but only if you start with good coffee.
compared to,say, French press or Moka Pot??
(-i've heard over and over that "percolating" is the absolute worst thing to do with coffee, although here it happens only once.....)
This is not really percolating directly over a flame, just infusion and filtering. I just discovered this method and am blown away by the great taste!
Thanks for the great video!
Sir, we have a MOD 500S Stainless Nicro. Very similar but, it's aluminum. Pot was my Grandmothers and we use it everyday. It was fascinating to see how the most amazing coffee pot ever made works. You posted this 7 years ago. I apologize for just finding you.
Thank you for this great video! I has taken out a lot of the guess work on whether or not to buy one...
Thank you youtube for recommending me this video
Just got the same unit. Makes a great cup of coffee!
I've been using my gasketless for about two weeks now, and can't seem to get it to where it doesn't stall. If I put the top on while the water is still barely warm, it starts to come up. So... I've tried waiting until it nearly boils, and the water draws up quickly, but won't draw down very quickly.? What am I doing wrong?
thanks! was testing one to sell on ebay and couldn't figure why the coffee wouldn't go back down into the pot lol now i got it. I considered keeping it but it seems so fragile and top heavy that i'm pretty sure it will end up broke in a month
Your welcome, I make my coffee just about every morning with a vacuum pot.... It makes really great coffee
and slows me down in the morning before enjoying my first cup and the day ; )
for this unit to work perfectly don't grind the coffee too fine. after about 20 tries and ready to throw in the trash i have it figured out and that was the issue
Thanks for the advice. Just picked up a burr grinder to fine tune the grind for mine,
I am selling on of these on ebay right now! I hope you don't mind me sharing your video! Love it - very helpful!
+Vickie Stellinga You still selling pots? I may be in the market for spars, I loving using on a daily basis
Thanks Mark
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
Came across an original, boxed Cory rubberless percolator, with instructions, filter ball, handle, lid, and an electric base for heating/brewing. Haven't tried it, so will take your word for how good the coffee is. Found two electric perc's, an aluminum and a silver, the old tall ones, tried them, great coffee. Recall my mother using the silver one while entertaining friends and filling with marbles and water (not sure if she added baking soda -- anyone?) to clean the inside -- the marbles came out with the coffee stain, leaving the pot spotless.
I just saw one in sunset boulevard, the 1950 movie. I had to see how it works. Looks delicious, retaining the coffee's natural oils.
😂 I saw it too
Just have to be aware of those diterpenes.
Do you know if different vacuum coffee makers work differently? Mom always brought the water to a boil, removed it from the heat added the top part, the water shot up into the coffee almost instantly. She stirred it around and the coffee dropped back down into the pot in less than 5 minutes. With that her vacuum coffee pot had a rubber gasket between the two pots or chambers. Does the gasket make a difference?
I have this same pot. I notice you put the upper on at the beginning of the process. I wait until the water temp is near 185-190F (close to brew temp) before I put the upper on and the coffee meets water. However, I do get stalls sometimes. I suspect your method might be better to prevent stalls. Great video, thanks for sharing!
Yes, these all class pots (no rubber seal) can be tricky, I use both styles, but found the glass on glass seal it is even more critical to allow the air in the lower to have enough time to expand and force the water up the tube. Thats why I place it on top with cold water on the bottom. Love the coffee it makes!
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
@@ShantelLee-ng7en if you want to be safe, put a pan in-between the burner and the pot, but there shouldn’t be a problem there is water in the pot so it can only het as hot as the water. Don’t run it dry!
So cool! Just bought one of these but I think I'm missing a piece or 2.
Many old cory pots and others with a rubber seal no longer work. The seal dries out. I have found a way to rejuvinate the rubber, as long as it is not cracked. Simply buy a bottle of transmission seal conditioner, place the seal in a pot on the stove, put seal conditioner in and turn the heat on low, cover leave for a couple of hours. Remove lightly dry and leave it sit overnight, wash next day and use.
hmm can I mix and match different parts to assemble this coffee maker? like top DCU with a lower different part?
I've seen it where people wait for boiling, then add coffee. My grandmother used to do it your way. Not sure which is right but people raved about her coffee.
Thank you so much. I have the BOTTOM craft of a CORY pot the handle is white, and all the rest is as yours..
Knowing what this had been helps..
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
No gasket cuz World War 2 had a rubber shortage in the US, so manufacturers, like Cory, developed all glass vacuum pots.
Cory made their Rubberless coffee makers in three sizes. The DNG Petite Rubberless 4 cup using DNU upper and DNL lower. The DCG Royal Rubberless 8 cup Royal Rubberless using DCU and DCL glass parts and the DIG Imperial Rubberless 12 cup using DIU upper and DIL lower glass. Based on advertisements they appeared after the war rather than being a war time attempt to save rubber. The earliest advertisement I have seen for them is 1947ish and the last from a 1955 wholesale catalog.
I copied, and pasted the statement above for you from a thread on a website on coffee. Here is the link to the full post:
www.home-barista.com/brewing/cory-rubberless-vacuum-brewer-t35958.html
Harvey Cory (6 March 1882 - 16 October 1949)
Harvey CoryCory Coffee Maker PatentHarvey Cory was born on the 6th of March 1882 in Autaugaville, Autauga County, AL. Cory was founder and president of the "Cory Glass Coffee Brewer Corporation", manufacturer of the famous Cory Class Vacuum Coffee Brewer.
Harvey Cory, and Margaret Maud Markell were married on the 27th of November 1906 in Pittsburgh, Allegheny County, PA. They had one child, Elizabeth Emma Cory, born on the 3rd of February 1908 in Pittsburgh, Allegheny County, PA. Cory’s wife, Maude, was born on the 1st of September 1886 in Pennsylvania.
Cory moved to Chicago where he invented, and manufactured the "Cory Glass Vacuum Coffee Brewer." In 1933 Cory founded the "Harvey Cory's Glass Coffee Brewer Corporation ," (later renamed the Cory Corporation.). The enterprise's subsequent coffee percolators led the market for half a century.
The first patent filed by Harvey Cory for a vacuum coffee brewer was in 1933, and was quickly followed by a series of new designs, many of which focused on peripheral technical elements of the brewers - handles, covers, filters, and so forth. Cory’s 1934 patent illustrates both the "Fast-Flo" filter which shipped with many early Cory brewers, as well as an alternate design which showed up later on vacuum pots sold by General Electric. It is interesting to note that what is arguably the most significant innovation ascribed to Cory, namely the universal all glass vacuum coffee maker filter rod, was not invented by Harvey Cory himself, but by Raymond Kell of the MacBeth Evans Glass Company in 1932. The initial familiar Cory design was patented in 1939, while the similar, albeit glass and metal Silex "Lox-In" filter rod was not submitted for patent until 1946.
In 1942, Harvey Cory submitted a patent to the US Patent Office for his three sizes of "Rubberless" vacuum coffee maker (see illustration below). This design completely dispenses with the perennial rubber gasket always employed (even in current manufacturers’ models) to form an airtight seal between the upper brewing chamber, and lower carafe vessel of a vacuum coffee maker by means of instead two formed, slightly protruding, ring shaped mechanically ground upper and lower mated glass surfaces. The resultant seal when pre-moistened is rendered fluid tight, and retained in that manner initially by the combined weight of the upper bowl, glass filter rod, and ground coffee which in turn is further progressively reinforced by the ever increasing weight of the heat applied water in the lower carafe chamber being forced by the rising enclosed pressure up into the coffee maker’s upper brewing chamber.
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That same year of 1942, Harvey Cory retired. Then James Alsdorf and a group of friends scraped up enough money to buy control of the corporation. It was not until after World War II was over that the Cory Corporation under Alsdorf’s control began production of the retired Cory’s 1942 patented three size Rubberless vacuum coffee maker design.
Harvey Cory died on the 16 of October, 1949 in Prescott, Yavapai, Arizona and is buried there in Mountain View Cemetery. Cory’s widow, Maude died in June of 1975 and is also buried in Mountain View Cemetery. Their daughter, Elizabeth married Earnest August (1904 - 1980.) She passed away on the 17 of October 1994 in Prescott, Arizona. Like her parents, Elizabeth, as well as her husband, Earnest are both buried in Mountain View Cemetery.
And as anyone can plainly read in that biography the information you are relying on is not correct. The Rubberless Cory was not out into production until after the war.
I didn't realize this didn't have a rubber gasket!! I need one. This would look cool sitting with my flameware Pyrex percolator. I see a taste testing in the making!!
What about cleaning the coffee grounds out? I'm on a septic and can't just rinse them down the drain.
My grandmother had one of these. She was very fussy about her coffee.
i have one with rubber gasket, which is yours a different model? or i can use mine without one?
My favorite way to brew!
What happens if I try to make coffee without the rubber seal on a model that has it?
I have one of these and didn't know how to use it. I thought the black thing with the protrusion was a lid of some kind. Now I see it holds the top half. Duh....
is the coffee any good
Is there any better sound than someone pouring a nice fresh cup of coffee.
Do the top containers come with a lid ?
This is a beautiful vacuum pot. I'd gladly pay you a lot for it.
Hi,thanks it was a gift from my son so not interested in selling it.
I have one for sell.
I'm standing here in the Goodwill Store. Just found a BRAND NEW CORY DRL 8 cup for $4. Never used. Clean as a whistle! Had to log on to see how to properly use it. Thanks for the video! Headed home for a good cup of coffee!
Peter, just bought a brand new one at Goodwill for $4! Check your thrift stores, you'll be amazed at the stuff in these stores.....FOR CHEAP!!! Salvation Army stores, too! ♡
@@jamesrichards2256 Still have one for sale?
Is it safe to use an electric stovetop or will that break the pot?
From Chicago we're u find the coffee pot at
How long does it take to draw the coffee into lower pot. It looked like about a minute and a half from your video but then I noticed you did a cut at one point when the bottom container was about half full. How much time did you cut out.
Ecospider5
It really depends on a couple things, sometimes you get minor leaks with the vacuum between the surfaces, and the most common reason would be your grind is too fine and the seal leak becomes the lesser resistance rather then drawing through the grounds, you should be able to hear the leaks if you have them.
So, what filters the coffee?
The way the glass rod down the center pipe.fits.
No gasket? wow
I recently purchased one of these at the thrift store (for 50 cents), and I have yet to get it to work properly. I followed your instructions, but I hear air sucking in through the "gasket" when the lower chamber starts to cool which weakens the vacuum, and it takes 20 minutes for the coffee to come down, and even then, it doesn't all come down. Any idea what I'm doing wrong?
This particular Cory in video doesn’t have a gasket, it’s all glass contact, if you have a rubber gasket and it’s leaking, try turning heat to lower setting, and if you hear air leaking pressing down within a rocking back and forth till leaking stops is what I do with the gasket types.
Hope that helps
@@mwmundt Thank you for getting back to me. I should have made myself clearer. I put "gasket" in quotes to mean the area where the upper and lower vessels contact each other. The surface between them is ground glass. The coffee maker I have is exactly like yours in the video, a Cory rubberless vacuum pot. If you have any suggestions I would be very grateful. Thanks.
Carl L. I see, the all ground glass ones require much more patience, and a very low flame or heat, as a higher temp will blow buy the glass on glass seal, I wet the surface with my finger, and rotate and look for a solid color for a seal then use low temperature for entire process, if it leaks during the heating stage it generally will leak on the cooling vacuum stage too, it’s a tricky seal.
Good luck
I have a Silex that has a rubber gasket.. very awesomely cool coffee pot, but it smells bad and I believe it's imparting a ever so slight rubbery flavor into my coffee and it's very off-putting. I wish I could find someone to make me a silicone gasket for it. 😢
Does it leave sludge in the pot ?
only if your grind is too fine
I need a stand like that.
nice
Cool!
Hi do you have the burner on high or a simmer?
I can see that these comments are 5-7 years old but if anyone can please let me know if you can use an electric burner on an electric stove?? I don’t want to assume and mess it up but it does seem to withstand the fire. Not sure if the metal from electric stove would mess it up.
You ever hear about time laps
Just found a cory rod filter in a draw and here I am
I give up. I have tried every conceivable way to coax coffee out of my rubberless Cory. The water either doesn't rise, or it rises partially and then sinks down, leaving me with brown tinted water and moist grounds, or it rises and takes 25 minutes to return to the bottom. The coffeemaker has a new place on the bottom shelf of the cupboard where it can stay until my next garage sale.
Carl L. Check my other follow up below to your other post
Well I'll be... There is nothing new under the Sun.
It looked like something from an old science lab. I guess in a way it kinda was.
Otkrijemp u.iz
Much less complicated and much more easy to use and clean this VINTAGE vacuum coffee pot than the MODERN version that has over 200,000 hits on RUclips. Why? Maybe the MODERN version means selling more FILTERS etc. etc. ?
my12steptruth it’s because people are lazy and want to put a k cup in the machine and push a button
What a stupid invention #❤️mykeurig
adiksadiatabs Are you serious?
adiksadiatabs++ what a STUPID PERSON love my vintage silex vacuum coffee maker.
He’s just a troll!
He is an idiot