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US Patent: 479,698
Henry Bornstein - Boston, MA

USPTO Classifications:
81/163, 81/92

Tool Categories:

John A. W. Seabery - Malden, MA

J. A. W. Seabery Machine Co. - Malden, MA
Cincinnati Tool Co. - Cincinnati, OH
Henry Bornstein & Co. - Ipswich, MA

Alice A. Perkins
Alban Andren
Lauritz M. Moeller
Joseph F. Hankins

Patent Dates:
Applied: Jan. 23, 1892
Granted: Jul. 26, 1892

Patent Pictures:
Henry Bornstein patent July 26, 1892
USPTO pdf tiff
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Turning the handle produces double speed adjustment as the inner portion of the lower jaw and the shank of the outer jaw are both threaded.

Some examples marked with the manufacturer name, others marked 'WORLD'S EXPOSITION, CHICAGO, 1893' plus "Patented July 26, 1892." This style BORNSTEIN wrench appears in a 1913 item about wrenches produced by Bornstein at Ipswich, Mass.

Corresponding Canadian patent CA-40,508 was granted Oct. 1, 1892.

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