https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85873&pn=6,101,907 Interference fit joint and method and indexable ratchet wrench utilizing same Patentees: Glenn A. Kaufman - Kenosha WI , Bryan M. McGovern - Kenosha WI Granted:2000-08-15
Manufactured by Snap-On Tool Co. - Kenosha WI
Assigned to Snap-On Tool Co. - Kenosha WI

The focus of the patent is technical details of the joint between the handle and head; see also prior James E. Cole patents 5,419,221 and {5.775,184} for context. Prior art patents cited as references include: 2,921,773, 3,577,795, 3,621,945, 3,836,272, 4,178,777, 4,210,372, 4,406,186, 4,838,832, 4,989,708, 5,020,397, 5,257,557, 5,295,423, 5,419,221, 5,503,494, 5,647,683, 5,664,655, 5,674,026 and 5,941,141.
This is one of 85,163 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=52491&pn=1,858,418 Tool Patentee: Charles A. Rowley - Bloomfield, Essex County NJ Granted:1932-05-17
Manufactured by Rajah Co. - Bloomfield, Essex County NJ
Assigned to Rajah Co. - Bloomfield, Essex County NJ

Specialty crimping tool designed to strip insulation from wires and fasten connectors on to ignition wiring; the tool and terminals were produced for many years.
This is one of 85,163 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85872&pn=5,775,184 Indexable wrenches Patentee: James Ellis Cole - Dallas TX Granted:1998-07-07
Manufactured by Snap-On Tool Co. - Kenosha WI
Assigned to Snap-On Tool Co. - Kenosha WI

The application and patent evolved from the original application resulting in patent 5,419,221. Both patents were licensed to Snap-On. Claim 1: "1. A tool comprising: a tool head including a first orifice having a first longitudinal axis and a first curved surface at a predetermined radial distance from the first longitudinal axis, the first curved surface including a first plurality of splines disposed parallel to the first longitudinal axis; a handle including a second orifice having a second longitudinal axis, the first and second longitudinal axes being coaxial, and a second curved surface, the second curved surface being disposed of a predetermined radial distance from the second longitudinal axis and including a second plurality of splines configured to engage the first plurality of splines; a connecting pin disposed in the first and second orifices and connecting the tool head and the handle; the connecting pin being rigidly attached to a first one of the tool head and the handle, a second one of the tool head and the handle being slidable between a locked position and an unlocked position on the connecting pin; in the unlocked position, the second one being free to rotate completely about the connecting pin; and in the locked position, the first plurality of splines engaging the second plurality of splines to rotationally lock the handle to the tool head." Prior art patents cited as references: 928,375, 1,109,032, 1,568,442, 1,840,685, 2,921,773, 4,145,124, 4,184,783, 4,281,601, 4,406,186, 4,582,445, 4,747,328, 4,794,829, 4,929,113}, 5,197,817} and 5,581,838. Compare subsequent patent 6,101,907.
This is one of 85,163 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=48534&pn=226,052 Air-Engine Patentee: John Ericsson - New York NY Granted:1880-03-30
Manufactured by Delamater Iron Works - New York NY
Assigned to George H. Robinson - New York NY

Abstract: This invention relates to that class of air- engines in which, by the action of a piston, which may be termed the "exchange-piston," working in a cylinder, at or near one end of which is the working-piston and at the other end of which is the fire-place, the same air is over and over again transferred from each end of the said cylinder to the other alternately, being heated and expanded during its transference in one direction, and being cooled and contracted during its transference in the other direction, the said piston also performing the office of a regenerator. Claim: The combination, with the cylinder, crank-shaft, and crank of an air-engine, of a working-piston and an exchange-piston in the said cylinder, a beam and connecting-rod connecting the working-piston with the crank, and a bell-crank lever and connections connecting the crank with the exchange-piston.
This is one of 85,163 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=25396&pn=D28,229 Handle For Wrenches Patentee: James MacPhail - West Pullman IL Granted:1898-02-01
Manufactured by Plano Manufacturing Co. - Chicago IL
Assigned to Plano Manufacturing Co. - Chicago IL

The handle has an open end wrench at its end. A movable jaw and adjusting nut complete the wrench. Some have part no. L320, and some have the PLANO trade mark molded in as well. It appears in parts catalogs for PLANO binders. A catalog page from CHICAGO HOUSE WRECKERS listed the remainder of the stock for sale. That company had also salvaged construction materials from the Chicago World's Fair. A similar malleable iron wrench marked 794 is 7 inches long.
This is one of 85,163 patents currently in the database at datamp.org

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