https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=36376&pn=9,168X Carriage Spring Patentee: Henry Pace Sr. - Cincinnati, Hamilton County OH Granted:1835-10-14

Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. Only the patent description is available. This patent is in the database for reference only. Listed in A List of Patents Issued by the United States, from 1790 to 1847, 1847, pgs. 210 & 518.
This is one of 85,270 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85980&pn=2,704,477 CENTERING AND GUARD SPRING FOR PIPE WRENCHES Patentee: Clyde E. Wright - Elyria OH Granted:1955-03-22
Manufactured by Ridge Tool Co. - Elyria OH
Assigned to Ridge Tool Co. - Elyria OH

The spring structure in this patent is described in relation to aluminum or magnesium alloy wrench frames to provide wear resistance. RIDGID aluminum frame pipe wrenches were made in sizes through 48 inch.
This is one of 85,270 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85976&pn=2,704,472 TORQUE APPLYING TOOL WITH PREDETERMINED TORQUE RELEASE MEANS Patentee: Ralph E. Booth - Mansfield MA Granted:1955-03-22
Assigned to APCO-Mossberg Co. - Attleboro MA

Claim 1: "A torque tool comprising a body having a work engaging member pivotally mounted thereon at one end thereof, a handle secured to said body at the other end thereof for movement therewith, a spring bar rigidly connected to said member and extending therefrom axially of said body and having limited lateral movement with respect thereto, resilient means for holding said bar against said lateral movement including a slidable plunger at the end of said bar in axial alignment therewith, a ball positioned between said bar and said plunger, and a compression spring acting between said handle and said plunger urging said ball into engagement with said bar, and means for limiting the pressure of said spring on said plunger prior to the yielding of said spring under stress." Prior art cited as references include patents 2,365,486, 2,442,359 and 2,686,446. Cited in 2,887,919, which improves the "break" structure.
This is one of 85,270 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85975&pn=2,887,919 Predetermined torque release hand tool Patentee: Sulo A Aijala - Attleboro MA Granted:1959-05-26
Assigned to APCO-Mossberg Co. - Attleboro MA

Refinement of the "click" structure in torque wrenches of the type in R. E. Booth patent 2,704,472. Previous patents 2,704,472, 2,732,747, 2,743,638, 2,789,454, 2,791,141, 2,792,733 and 2,803,979 are cited as references.
This is one of 85,270 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85972&pn=923,257 Twist Drill Patentee: Oscar Fredrickson - Buchanan MI Granted:1909-06-01
Manufactured by Celfor Tool Company - Chicago IL
Assigned to Celfor Tool Company - Chicago IL


This is one of 85,270 patents currently in the database at datamp.org

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