Datamp.org Patents http://www.datamp.org/ Recently added patents en-us US Patent: 1,075,710 http://www.datamp.org/patents/displayPatent.php?id=42304&pn=1,075,710 Set Screw Or The Like Patentee: Dwight S. Goodwin - Waterbury CT Granted:1913-10-14
Manufactured by Goodwin Hollow Set Screw Company - Waterbury CT
Assigned to Oscar F. Fitzsimons - Waterbury CT

The patent covers the "dovetail" grooves in the recessed central socket of the set screw, and the corresponding splines on the wrench. Introduced as the GOODWIN HOLLOW SETSCREW; produced as the BRISTO screw and matching wrenches. Contemporary ads note the screws could also be turned by a screwdriver with appropriate blade width.
This is one of 52,835 patents currently in the database at datamp.org

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US Patent: 529,401 http://www.datamp.org/patents/displayPatent.php?id=22696&pn=529,401 Spiral screw driver and drill Patentees: William H. McCoy - Millers Falls MA , Henry Pratt - Brooklyn NY Granted:1894-11-20
Manufactured by Millers Falls Co - Millers Falls MA
Assigned to Millers Falls Co. - Millers Falls MA

Per an 1894 Millers Falls catalog(reprint) it was sold as either a No. 11 which included 3 screwdriver bits, or a No. 12 which had the 3 screwdriver bits and 8 drill points along with an adapter to allow the drill points to fit the larger screwdriver slot.
This is one of 52,835 patents currently in the database at datamp.org

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US Patent: 601,194 http://www.datamp.org/patents/displayPatent.php?id=53246&pn=601,194 Wheel-guard for sawmill-carriages Patentee: Joseph Willard Zimmerman - Zimmerman LA Granted:1898-03-22
Manufactured by C. T. Patterson Co., Ltd. - New Orleans LA


This is one of 52,835 patents currently in the database at datamp.org

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US Patent: 1,541,248 http://www.datamp.org/patents/displayPatent.php?id=53245&pn=1,541,248 Pliers Patentee: Elmer R. Carlson - Galva IL Granted:1925-06-09

Compound leverage pliers with a slip-joint primary pivot. Carlson was offering the patent for outright sale in summer, 1927.
This is one of 52,835 patents currently in the database at datamp.org

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US Patent: 384,451 http://www.datamp.org/patents/displayPatent.php?id=13767&pn=384,451 Wrench Patentee: John S. Lang - Ypsilanti MI Granted:1888-06-12
Manufactured by Miller Wrench Co. - Ft. Wayne IN
Assigned to Alva Worden - Ypsilanti MI

Crank-driven tire bolt wrench with a rotating socket head for several sizes of nuts and a cross arm at the end of the "handle" to rest on wheel spokes and stabilize the wrench. Known examples have no visible markings.
This is one of 52,835 patents currently in the database at datamp.org

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