https://www.datamp.org/ Recently added patents en-us 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 85,262 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=42297&pn=1,593,588 Wrench Patentee: Frank Moore - Pittsburgh PA Granted:1926-07-27
Manufactured by Pittsburgh Malleable Iron Co. - Pittsburgh PA
Assigned to Pittsburgh Malleable Iron Co. - Pittsburgh PA

Roller jaw pipe wrench which on first glimpse appears identical to the CRAFT wrench based on patent no. 870,781. But there are subtle differences in the frame, connection of the movable jaw frame and compression spring, and details of the fixed jaw. Known examples of the Pittsburgh Malleable Iron Co. roller jaw pipe wrench have the CRAFT trade mark along with the 1907 patent date, and the full side pieces supporting the roller as shown in this patent. One example is marked with the 1907 patent date along with April 14, 1925.
This is one of 85,262 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=19840&pn=603,909 Saw-File Patentee: Peter Lord - Worcester MA Granted:1898-05-10
Manufactured by Lord, Witter & Park - Worchester MA

Made to sharpen multiple saw teeth at the same time, each triangular file is set at the proper angle and pitch if the file is used perpendicular to the saw. The sign sharpens every other tooth at the same time, when finished with one side you just flip the saw and file the remaining teeth. The sample is marked Lord, Witter & Park , Manufactures. Worchester, Mass. on one end, Lord "PAT", Saw File, May 10, 98, Pat's Pending on the other. Also the #8, for the number of teeth per inch its designed to sharpen. See also Patent818633
This is one of 85,262 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=24211&pn=2,546,660 Hacksaw frame Patentee: George R. Wilcox - Bernardston, Franklin County MA Granted:1951-03-27
Manufactured by Millers Falls Co. - Greenfield MA
Assigned to Millers Falls Co. - Greenfield MA

Abstract: The object of the invention is to provide a more efficient and durable hack saw frame, and one in which the blade may be held securely in place during operation while at the same time it may be readily inserted and removed. Claim: In a hack saw frame, a first section having means for carrying one end of a blade, a handle section with which said first section is adjustably connected, said handle section having a depending gripping section and two depending arms, said arms being intermediate said blade carrying means and said gripping section, a lever pivoted at one end between said depending arms and carrying means for connection to the other end of the blade, an opening in the other end of said lever, opposed slots provided in the depending arms, a controlling lever pivoted to said depending arms, said controlling lever carrying a member, traveling in said slots and engaging a wall of said lever opening, whereby to swing the first mentioned lever on its pivot for tensioning ,or releasing the saw blade.
This is one of 85,262 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=36315&pn=9,103X Looms Patentee: Conrad Kile - Erie, Erie County PA Granted:1835-09-18

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 drawing 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. 83 & 482.
This is one of 85,262 patents currently in the database at datamp.org

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