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Wire Jack Knives
The information presented here is what I believe to be fairly accurate from my experience in collecting wire jack knives for many years. However, if there is anything you feel needs to be corrected, please let me know. Also, if you have any additional information, please contact me, I'll be glad to get it. If I ever get more time I'll try to add more information about the scarcity of the different types. Also there are still many things I have to document, like the different types of advertising, and when nickel pins were replaced with brass etc. Anyway, after the short article, I have included a table of tang stamps that I have found on the small wire jacks.
Thanks for visiting my site.
The Mighty Wire Jack
Twenty years or so ago I found my first wire jack knife. At that time I wasn't really sure what it was, but I liked it so I bought it for my knife collection. At that time I had mostly bone handled pre WWII American made knives in my collection; but as I continued to buy these wire jacks, my collection grew. One time at the Springfield knife show I had a table next to a gentleman who told me he designed a perfect knife that had the fewest possible parts. He showed me his design of only five different parts and then I showed him one of my wire jacks with only three parts. He was truly amazed!
time I sold most of my other knives, but I continued to specialize in collecting
wire jacks. It was always easy to trade someone a bone handled knife for a
couple of old wire jacks, so my collection grew and grew. To this day, most
collectors don't seem much interested in wire jacks and some don't even put
them on display at shows - as they save their space for more valuable stuff.
However, if you ask the folks at the tables, quite a few have one that they can
pull out and sell you.
collectors still don't know a whole lot about them, so I decided to write a
little about them to help educate anyone who is interested. I believe that these
knives were one of the most ingenious designs ever conceived because of their
simplicity and their great functionality. I still carry one with me for every
day use. I prefer the pruner blade and the 1926 version because I like the steel
in that one better as it is slightly higher in carbon and cuts real well.
earliest patent for a wire handle jack knife was granted to George E.
Finkenbiner on October 13, 1914. He filed for the patent on July 8, 1913. The
sketch on this patent is similar to the George Schrade 3 & 1/4 inch spear blade
without a cap lifter. Another patent was granted to Frank P. Hemming on December
4, 1917. He filed for his patent on July 12, 1917.
The sketch on this patent is similar to the George Schrade 4 & 3/4
blade knife. However, I am not aware that either of these two knives were
actually ever manufactured or marketed. Later in 1926, George Schrade also filed
for and also received a patent for his version of the wire handled jack knife
and these were produced and sold by the millions.
Schrade was born in Williamsport, Pennsylvania, 2/13/1860. He learned the
toolmaker and machinist trades. In the mid 1880s he work in a small shop in New
York City making mechanical models for the U.S. Patent office, he also had
patents on many inventions of his own. George
is probably most famous for developing various types of switchblade knives, and
there is a lot of information available about them. However, George also
invented an improved version of the "Wire Jack" knife and this is the focus
of this article.
started the Press Button Knife Co. a Licensed division of Walden Knife Company
(1892 - 1923) Walden, NY. In 1904 George left the Walden Knife Co. and started
Schrade Cutlery (1904 - 1946), also in Walden, along with his two brothers, Jacob
Louis and William. Early knives were contract made in Germany.
later (around 1910) George traveled to Europe, initially trying to find outlets
to sell his cutlery machinery. He had some success in England, but by 1913 he
ended up in Solingen, Germany where he set up a push-button knife factory.
He returned to the US in 1916 due to WWI (after having all of his
equipment and supplies confiscated by the German government). George then began
working for Challenge Cutlery in Bridgeport, CT. He manufactured the Flylock
knife for Challenge at his plant at 46 Seymour Street in Bridgeport.
1928 Challenge Cutlery went out of business, never making the "Wire Jack"
that George patented in 9/21/1926. The patent stated, "The object of the
invention is to produce a pocket knife of simple construction comprising but two
main parts which are economical to manufacture and convenient and efficient in
In early 1929, George started his own company making "Wire Jacks" at Kossuth Street in Bridgeport, using equipment he got from Challenge Cutlery - in exchange for money they owed him for the rights for the Flylock invention. I now believe that the very first wire jacks were stamped "G. SCHRADE B-PORT CONN PAT. APLD. FOR". These are very rare and I only have ever seen two of them, both have spear blades. Like other small wire jacks, neither of them has the thumbnail opener on the blade.
earliest common "Wire Jacks" are stamped "WIRE JACK" on the
tang with a patent date of 9/21/1926. These are 3 & 1/4 inch closed. In addition to
the spear blades, George made a lot of the pruner or hawk bill patterns that
were widely used as advertising knives for various other companies. Later 1926
versions are stamped "Geo Schrade" (curved) and some of them spell out
the word "BRIDGEPORT"; some forks also have this 1926 stamp. The 1926 spear
blades came with and without a cap lifter slot.
The Case Cutlery Company also sold a "Wire Jack" pattern knife (W1216) using a couple of variations on their tang stamps e.g. "CASE TESTED XX" and "CASE PAT. 9-21-26". In both of these stamps, the word "CASE" is the older "tested" 1920-1940 version. The stamp could appear either above or below the cap lifter. These "Case" knives were made entirely in the Schrade company in Bridgeport, Ct. This was common for one knife company to make knives for another, incidentally, Schrade also made "Pull Balls" for Case and large switchblades for Remington.
Both Boy and Girl Scouts used these "Wire Jack" knives in their utensil kits. The first Boy Scout kits were available in their October 1932 catalog item #1384 and the three piece set sold for only one dollar. The Girl Scout versions came later. Many of the forks (about 1/2) are stamped "1/72/42" in error, the correct stamp is "1/27/42". However, before the three piece Boy Scout kits, George Schrade had a "Scout Chow Kit" that came in a smaller leather case and did NOT have a spoon. In this older kit, the knife was usually either a "1926 curved Geo Schrade" stamp or a "Wirejack" stamp w/cap lifter slot. The fork looked the same as the other forks and came with one of the older tang stamps . Many of these kits had customized embossing on the leather pouch, e.g. "Souvenir of Mohawk Trail".
died in 1940 and had 35 employees at the time. George's heirs continued to run
the business after his death. By 1942 George M. Schrade (son) reapplied for new
patents and started using a newer tang stamp with the 1942 date.
The earliest 1942 knives still had "GEO SCHRADE" curved; newer
versions straightened out the name and eventually changed the abbreviation of
the state to "CT". These knives were now made with more stainless steel
whereas the older knives were higher in carbon. They also produced several
larger "Wire Jack" knives of 4 inch and 4 & 3/4 inch and added a fish blade pattern
in the large knife (all of the 3 & 1/4 inch 1942 spear blades now had cap lifter
slots). I have also seen a picture of a Wire Jack Axe on a 4 & 3/4 inch wire
frame. The family ran the business until 1956 when they sold out to Boker. At
that time the company had grown to 100 employees. Boker continued the small 3
& 1/4 inch
pruner "Wire Jack" pattern with their own stamp until 1958 when they were
discontinued (I have never seen any other Boker patterns). Boker’s main
product in the old Schrade plant was switchblades and in 1958 when Congress
banned switchblades they had to close.
other very rare Schrade wirejack came with a copper blade for working around
explosives. One I have seen had the words "Heitzman Blasting Plug Co.
Shamokin, Penn." etched on the copper blade, but those letters were barely
visible. The tang was stamped "GEO. SCHRADE
also have a few mis-stamped wire jacks, some with missing information, some
stamped on the back of the tang. I even have one with "W1216" stamped on the
back but without any stamp on the front. I have seen one other tang stamp on a
wirejack frame; it was A.W. Wadsworth & Sons, Germany. Because wirejacks
were so inexpensive, it seemed odd that someone would put another blade on one
of them; therefore, I explored the possibility that Schrade had some early
models made in Germany. I had really hoped this was a valid tang stamp as it
would be a unique addition to my collection. I completed a thorough study that
included sending it to another collector (Dennis Ellingsen) for his inspection
and opinion. After all that, I am convinced that the knife is NOT real.
(It also had a useless thumbnail opener on the blade). This raises the
question of why anyone would put a Wadsworth blade on a wirejack frame? The most
likely scenario that I can envision is that 75 or so years ago someone owned a
new Wadsworth knife and broke the handle. Not wanting to waste a perfectly good
blade, a wirejack frame was easy to mount the blade on. Then for the next 75
years, the knife and frame wore, pitted and aged together so that today they
look like they have always been together.
Well, this is where this story ends for now. However, with the success that this pattern has had in the past, I wouldn’t be surprised to see some company make it again sometime in the future.
For your information, some of this
information in this story comes from my own observations from collecting Wire
Jacks for many years, I currently own about 300 of the knives plus a fair
amount the complete chow kits; however, most of my information comes from the
following individuals who were very generous in sharing their valuable time and
information with me: Bill Schrade, personal conversations and his book "George Schrade and His
Accomplishments" George Schrade Knife Company 1982.
Bill Schrade, personal conversations and his book "George Schrade and His
Accomplishments" George Schrade Knife Company 1982.
This table is in my "estimated" chronological order. I can not be 100% certain it is fully correct; however, it should be extremely useful for anyone interested in exploring greater details about their collection.
|This maybe the earliest tang stamp used on wire jacks. Notice that the "APD" in the "PAT APD FOR" does not have the "L" like the next stamp, nor the "B-PORT. CONN.". This is a very rare knife. Like all small wire jacks, there is NO thumbnail clip on this blade.|
|This one is slightly less rare, but also could have been the earliest tang stamp used on wire jacks. This is still a very rare knife. Like all small wire jacks, there is NO thumbnail clip on this blade.|
|The first common wire jacks that had the 1926 patent date and did not use the Schrade name.|
|Later Schrade began using the "Geo. Schrade" tang stamp. This stamp uses very small letters on the date.|
|George Schrade made wire jacks for Case. They were completely made, including the Case stamp in the Bridgeport plant. There are several variations of the Case stamp used. Some say Case Tested XX and do not have a patent date.|
|Here is a later version of the Schrade stamp with slightly larger letters than the one shown earlier. This was the stamp used on the extremely rare copper blade wire jack.|
|The last 1926 stamp had 5 lines on the tang. It also spelled the whole name "Bridgeport".|
|The earliest 1942 stamps still had the curved name "Geo. Schrade" on them. Some of these were stamped on the rear with the words "Stainless Steel".|
|Later the name "Geo. Schrade" was straightened out. This slightly rare stamp has "INC." after Knife Co, and also has the country "USA" on it.|
|This was the first stamp with "Stainless" on the front and the last one with the state abbreviation of "CONN."|
|At some point Schrade started using a state abbreviation of "CT".|
|The most common wire jacks have the words "Stainless Steel" in the upper right corner. These are plentiful as they were used in both Boy & Girl Scout chow kits.|
|The last wire jacks made by Schrade had slightly larger letters.|
|Boker used their own stamp after buying the Schrade company. Most Boker wire jacks have a small name etched on the tang - this one has the larger stamped name.|