Bugme Posted May 6, 2010 #1 Posted May 6, 2010 For future reference: On the inside crown of most every helmet liner made in WWII, is a manufacturers identification stamp. Below are graphics of what each stamp should look like along with the manufacturers name: First up, a low pressure liner manufacturer: Hood Rubber Company, Inc. Watertown, Massachusetts Identified by a silver "HR" in the crown
Bugme Posted May 6, 2010 Author #2 Posted May 6, 2010 Another low pressure helmet manufacturer: St. Clair Rubber Company Marysville, Michigan Identified by a yellow "SC" in the crown.
Bugme Posted May 6, 2010 Author #3 Posted May 6, 2010 High pressure helmet manufacturers: Capac Manufacturing Company Capac, Michigan Identified by the 'CAPAC' cross implementing the 'P' as the center letter.
Bugme Posted May 6, 2010 Author #4 Posted May 6, 2010 High pressure manufacturer: Firestone Tire and Rubber Company Akron, Ohio Identified by the Firestone: 'F' superimposed within a shield.
Bugme Posted May 6, 2010 Author #5 Posted May 6, 2010 High pressure manufacturer: International Molded Plastics,Inc. Watertown, Massachusetts Identified by the image of a man with his hands on his hips within an oval and the letters 'IMP' across the bottom. Please note, the 'IMP' letters are nearly impossible to see with a naked eye.
Bugme Posted May 6, 2010 Author #6 Posted May 6, 2010 High pressure manufacturer: Seaman Paper Company Chicago, Illinois Identified by a capital 'S' within an oval.
Bugme Posted May 6, 2010 Author #7 Posted May 6, 2010 High pressure manufacturer: Westinghouse Electric Company (Micarta Division) Pittsburgh, Pennsylvania Identified by a capital 'W' sitting on an elongated oval within a circle.
Bugme Posted May 6, 2010 Author #8 Posted May 6, 2010 High pressure manufacturer: Mine Safety Appliance Company Pittsburgh, Pennsylvania Identified by the intertwined & stylized capital letters 'MSA' within a circle.
Bugme Posted May 6, 2010 Author #9 Posted May 6, 2010 High pressure manufacturer: Inland Manufacturing Company(General Motors) Dayton, Ohio Identified by the name 'INLAND' within a house shaped outline.
Bugme Posted May 6, 2010 Author #10 Posted May 6, 2010 Fiber(Paper & Fabric), manufactured liners: Hawley Products Company, St. Charles, Illinois. Also contracted to: General Fibre Company Identification: Hawley Product Company Liners were stamped in capital black letters: "LINER, FIBRE M-1" on the interior side of the liner, most often near the temple behind the suspension. General Fibre liners have a small black "G" stamped in the crown)
Bugme Posted May 6, 2010 Author #11 Posted May 6, 2010 Here's a quick ID Chart for High Pressure liners:
Bugme Posted May 6, 2010 Author #12 Posted May 6, 2010 Here are some photo's of the actual helmet liner logo's(Note, The Hood Rubber logo is worn off in this example but, you can see the distinctive Hood style crown area) reference photo's from Top Pots:
37thguy Posted May 6, 2010 #13 Posted May 6, 2010 Great topic. This should be pinned. I read somewhere where some of the INLAND stamps were stamped backwards, frontwards, and sometimes both on the same liner. :think:
Bugme Posted May 6, 2010 Author #14 Posted May 6, 2010 Here's a double stamp image of an Inland mold that made it's way to Firestone where their stamp was superimposed over the old Inland stamp.
Bugme Posted May 6, 2010 Author #15 Posted May 6, 2010 Here's a nicer example of the actual Hood Rubber logo:
Bugme Posted May 6, 2010 Author #16 Posted May 6, 2010 This is the image found on a Hawley Fibre Liner:
Bugme Posted May 6, 2010 Author #17 Posted May 6, 2010 On the Hawley helmet liners that were sub-contracted to General Fibre Co. you'll also find a simple 'G' stamped somewhere near the crown. This is an image of an actual 'General' stamp.
odysseios Posted May 8, 2010 #18 Posted May 8, 2010 The Firestone over Inland stamp inside the liner of my Navy M1:
sharpsshooter Posted October 23, 2010 #20 Posted October 23, 2010 For future reference: On the inside crown of most every helmet liner made in WWII, is a manufacturers identification stamp. Below are graphics of what each stamp should look like along with the manufacturers name: First up, a low pressure liner manufacturer: Hood Rubber Company, Inc. Watertown, Massachusetts Identified by a silver "HR" in the crown Thanks for the liner manufacturer identification stamp information. This really helps to tell who made my liners. Is there liner identification stamps for liners used in KOREA and VIETNAM? I have not found any.
yardbird Posted February 23, 2011 #21 Posted February 23, 2011 Hey this a great post..checked out my liners..1 Firestone..1 Capac..and 2 Westinghouse that were issued to me..one at Ft.Sill 1945 and the other at Ft. Knox...1946..
Bugme Posted July 3, 2011 Author #23 Posted July 3, 2011 Where are the markings located? Inside the liner at the crown(top)
ken88 Posted July 18, 2011 #24 Posted July 18, 2011 Capac is definitely the most dangerous one if you collect wwII stuff. I got fooled once and it immediately went back. Wouldn't buy them anymore. I do have a Seaman liner if you guys ever need pics on that one. Cheers
DannyBMW Posted September 5, 2011 #25 Posted September 5, 2011 What do you mean by Dangerous... I have a Westinghouse/Capac double stamp so I'm curious.
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