This is a punch and die set that I think may be for electrical plug fittings. Looks like it's for twist lock plug/receptical parts I was told. If someone knows otherwise, please let me know.
New PUNCH PULLER Brand Name: Cobra Made by Petersen Manufacturing Co., Inc. They were located in DeWitt NE. This knockout punch puller can be used with Greenlee, Enerpac and Ensley Knockout Punches.
Forming by Hydraulic and Crank Presses and Cast and Molded Dies, prepared by and published by International Textbook Co., Scranton, Penn., for the Bureau of Aeronautics, Department of the Navy, 1943. Republished by Lindsay Publications, Bradley, IL, 2009. 5 1/2 x 8 1/2 softcover, 152 pages.
1914 Modern Blanking & Piercing Dies Machinery's Reference Book No 132 Description Vintage 1914 booklet titled "Modern Blanking and Piercing Dies", a series of machinery reference books published by The Industrial Press, publishers of Machinery magazine. This is reference book No. 132.
Dimple Dies & Rivet Sets & Flush Sets: DIMPLE DIES: 3/32", 1/8", 5/32", 3/16" All with 1/4" to 5/16" Body Length Additional 3/32" with 1/4" body length on Punch and 3/8" on die. One of the 3/32" Dimple Dies has been "relieved" so as to fit close to radius flanges on wing ribs. RIVET SETS: Rivet Squeezer Sets ( recessed center for setting round head rivets) One for each size: 3/32", 1/8", 5/32" & 3/16" All have 1/4" Body Length.
From local garment factory liquidation. Listing is for (1) 2 piece set 3/16" hole punch die heads for industrial grommet press or kick press. Dies have 3/8" diameter posts.
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