Patented and Distinctive Bit Braces & Augers, a Research Study
George Langford, Sc.D.
Updated December 15, 2016
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Lancaster Machine & Knife Works
None of the braces made by L.M.&K.Wks. in Lancaster, New York were patented by anyone associated with the company, and they made braces with markings ascribing them to marketing firms such as H.H. Mayhew or E.C. Atkins, who sold braces under their own name that were mainstays of other companies such as John S. Fray & Co. and PEXTO.

Representative Images
(can be enlarged)
found by GB

Patent Dates
Directory of American
Toolmakers: active years

Joseph Zirikelback/
L. M. & K. Wks.
Chuck apart
October 14, 1890
1890-1925 (L. M. & K. Wks. - sold to Stanley Rule & Level Co. in 1916).
Joseph Zirikelback assigned his patent rights to L.M. & K. Wks.
Alexnder Bennett & Philip Bloedel/
L. M. & K. Wks.
Bennet & Bloedel brace
B&B 801,566
October 10, 1905
Two different makers are claimed for this design: L.M. & K. Wks. and E.C. Atkins & Co., but Atkins made saws and marketed braces made by others.
G.M.D. Heard/
L. M. & K. Wks.
Chuck apart 52 878,205
February 4, 1908
George M.D. Heard patented a series of knockdown-frame braces, so this brace is a bit of a departure.
L. M. & K. Wks.
(by maker's mark)
Chuck apart
134 Unknown
No date
Three braces were found in separate places, all marked differently; I concluded that their common maker was PEXTO because the jaws follow a PEXTO patent. Without a patent for the chuck used here, we cannot know if it included an assignment of rights.