https://www.datamp.org/ Recently added patents en-us 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 85,256 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 85,256 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 85,256 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85965&pn=77,046 Car Coupling Patentee: Eli H. Janney - Alexandria, Alexandria County VA Granted:1868-04-21

This car coupler was a predecessor to Mr. Janney's revolutionary knuckle coupler (patent #138,405, which in a modified form is still in use today. Abstract: My invention consists in constructing an automatically working car-coupling in such a manner that the coupling and uncoupling are performed without endangering the operator's life by going between the cars. The link intended to couple two cars together is placed and kept in an inclined position, resting its lower end against the oscillating-catch, leaning its upper end on a support attached for that purpose to the platform of the car. When the coupling is to take place, the shock of the two cars, when running against each other, will force the link forward, and it will fall over the oscillating catch of the other car, and both cars are coupled together. Claim: The combination of the oscillating-catch E, mounted upon the movable bar F, lever I, and latch D.
This is one of 85,256 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=58978&pn=376,315 Injector Patentee: Strickland L. Kneass - Philadelphia PA Granted:1888-01-10
Manufactured by William Sellers & Co. - Philadelphia PA
Assigned to William Sellers & Co., Inc. - Philadelphia PA

Abstract: My invention relates, principally, to that class of injectors in which the water receives io successive impulses from two or more jets of steam arranged in the same axial line, the velocity of the water being continually accelerated without being diverted from its course until it has acquired the velocity requisite to enable it to enter the boiler, but is also applicable to injectors having but one steam jet under suitable conditions. It is an object of my present invention to make an injector which shall be automatic in its action under variable conditions of water- supply and steam-pressure. and that shall be capable of restarting itself if from any cause the jet should be broken as soon as the disturbing cause is removed; and to this end my invention consists in providing an injector with a forcing combining-tube and a water-chamber provided with a water-inlet port and an over- flow-port which communicates with the atmosphere, which chamber contains the receiving and overflow openings of this combining-tube, in combination with a forcing steam-nozzle which terminates forward of the receiving end of the combining-tube; and it further consists in an annular lifting steam- nozzle, an annular lifting combining-tube, a central forcing steam-nozzle, and a forcing combining-tube, the discharging and of the forcing steam-nozzle being forward of the lifting combining-tube; and it further consists in an annular lifting steam-nozzle, an annular lifting combining-tube, a central forcing steam-nozzle, and a forcing combining- tube, the discharging end of the forcing steam- nozzle being forward of the receiving end of the forcing combining-tube; and it further consists in an annular lifting steam-nozzle, an annular lifting combining-tube, a central forcing steam-nozzle, a forcing combining-tube provided with a forward overflow-opening, a rear overflow-opening located at a point in the rear of that where the diameter of the, tube contracts to less than nine-tenths that of the discharging end of the steam-nozzle, with one or more intermediate overflow-openings, and an overflow-chamber in which all the overflow-openings are located. Claim: A forcing combining-tube and a water-chamber provided with a water-inlet port opening into and an overflow-port opening out of said chamber, which chamber contains the receiving and overflow openings of this combining-tube, in combination with a forcing steam-nozzle which terminates forward of the receiving end of the combining-tube.
This is one of 85,256 patents currently in the database at datamp.org

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