Does this mean anything to anyone

[1930]

Someone on another forum was describing an early Plymouth toolkit, they said ........and three 'flat wrenches', given as #23, #25, and #29. The numbers refer to industry standard wrench patterns. ........Does this mean anything to anyone here??

[Bus]

Industry Standards were numbers assigned to wrenches originally by Williams (or maybe Whitman & Barnes before Williams). They were consequently use by several other companies and became known as Industry Standard Numbers.

The wrenches in question were light cap screws or engineer's wrenches with double open ends (at 15 degrees).

No. 23 was for U.S.S. Bolt Sizes 3/16" & 1/4" with milled openings of 13/32" & 1/2".

No. 25 was for U.S.S. Bolt Sizes 1/4" & 5/16", Hex Cap Screw Size 5/16" and S.A.E. size 5/16" with milled openings of 1/2" & 19/32"

No. 27 was for U.S.S. Bolt Sizes 5/16" & 3/8"  with milled openings of 19/32" & 11/16"

[1930]

Thanks Bus, is there any place on the web where I could view a photo of what was considered at the time  ......The wrenches in question were light cap screws or engineer's wrenches with double open ends (at 15 degrees). ..........Also it would be interesting to see a complete list of the missing numbers

[lbgradwell]

Check out this page at AA for more info on Standard Numbers...

http://home.comcast.net/~alloy-artifacts/table_oe_wrench.html

[Bus]

Here's a picture or a Billings & Spencer Engineer Wrench I scanned from a 1925 catalog.



I started to compile a chart of Williams Industry Standard Wrenches and their sizes cross referenced with Billings & Spenser (one of the companies that didn't use the Standard numbers, Armstrong and Whitman & Barnes (the predecessor of Williams) several years ago using descriptions found in old catalogs.  It's a time consuming process and I haven't worked on it lately. What I have can be seen here:

http://www.wrenchingnews.com/industry-standard-wrenches/chart.html

A lot of blank spaces. If anyone would feel compelled to take or help with this project I would send you a copy of the Excel Spreadsheet.

[eddie hudson]

I started to compile a chart of Williams Industry Standard Wrenches and their sizes cross referenced with Billings & Spenser (one of the companies that didn't use the Standard numbers, Armstrong and Whitman & Barnes (the predecessor of Williams) several years ago using descriptions found in old catalogs.  It's a time consuming process and I haven't worked on it lately. What I have can be seen here:

http://www.wrenchingnews.com/web-misc/standard-wrench-size-chart-006.htm

A lot of blank spaces. If anyone would feel compelled to take or help with this project I would send you a copy of the Excel Spreadsheet.

WOW! that's some undertaking. Maybe someone with an old W&B or Armstrong catalog or two can help out.

[1930]

Thats all a big help, thanks for that