https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=14947&pn=18,266 Wrench Patentee: Henry D. Blake - New Hartford CT Granted:1857-09-22
Assigned to W. H. Warner - New Britain CT

The adjustable jaws are arranged in a rough parallelogram. A thumb piece extends toward the handle on the inner jaw segment. Motion of the "T" shaped handle segment opens or closes the jaw opening. Both pipe and nut wrench applications are shown in the patent drawing. The patent claims were reprinted in the British "Commissioner of Patents Journal."
This is one of 84,518 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84382&pn=703,237 Variable Friction Gearing Patentee: Edward P. Cowles - Warren, Trumbull County OH Granted:1902-06-24

Abstract: This invention relates to improvements in variable-speed friction-gearing; and the object of the invention is to provide a mechanism in which the adjustment of the friction power-transmitter relative to the driving or driven elements to vary the speed of the latter will be effected practically automatically. Claim: In a device for changing speed, two parallel, rotatable wheels or disks, a friction-roller supported between and arranged to engage both said disks to transmit motion from one to the other, and means for adjusting the plane of rotation of said friction-roller angularly to its normal tangent position at its point of contact to cause said roller to traverse said wheels or disks in opposite directions toward or from their centers.
This is one of 84,518 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=13695&pn=13,388 Improved Ratchet-Wrench Patentee: Alden Graham - Roxbury MA Granted:1855-08-07
Manufactured by Atwood & Co. - Boston MA

The improvement is the arrangement of adjustable jaws on a ratcheting wrench face. A well marked example is stamped "ATWOOD & CO. BOSTON / AUG. 7, 1855 PATENT" Manufacturer info. also appears in "American Wrench Makers 1830-1930," by Kenneth Cope.
This is one of 84,518 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=83818&pn=2,022,542 Hydraulically Operated Grinding Machine Patentees: Carl G. Flygare - Worcester, Worcester County MA , Wallace H. Wood - Worcester, Worcester County MA Granted:1935-11-26
Manufactured by Brown & Sharpe Mfg. Co. - Providence, Providence County RI
Assigned to Norton Co. - Worcester, Worcester County MA

Abstract: This invention relates to a mechanism for moving the slide of a grinding machine, and more particularly to a grinding wheel feeding mechanism for a hydraulically driven surface grinding machine. Heretofore, in grinding machines of the type in which the work table reciprocates longitudinally of the base and the grinding wheel is mounted on a slide movable transversely relative to the longitudinal movement of the table, the transverse feeding movement is obtained by a manually operable feeding mechanism whereby the operator, at the end of the table stroke, may move the wheel transversely so that on the next pass of the work by the wheel, the wheel will grind a fresh path on the surface of the work. Power actuated mechanism, such as a pawl and ratchet mechanism, has been devised for moving the grinding wheel slide transversely, either for a continuous movement or in timed relation with the work table reciprocation. The power actuated feeding mechanisms heretofore provided of the pawl and ratchet type, which are either actuated mechanically, electrically or hydraulically, have been so constructed and arranged that the transverse movement of the wheel at each actuation of the feeding mechanism moves the wheel only a fraction of the wheel width, thereby reducing the efficiency of the machine. To obtain the maximum efficiency of the grinding wheel, it is essential that the wheel be traversed by an amount substantially equal to the width of the wheel so that the operative face of the wheel engages and grinds a different portion of the work at each reciprocation of the work table past the grinding wheel. The primary object of this invention is to provide a grinding machine having a movable slide with a fluid pressure system for moving the same which includes a metering valve arranged to force a measured amount of fluid through said system to move the slide through a predetermined distance. Claim: A grinding machine comprising a base having a work support and a rotatable grinding wheel thereon, a traversable slide carrying one of said parts which is movable relative to the base, a fluid pressure system including a piston and cylinder operatively connected to traverse said slide, and a metering valve in said system which is operatively connected to force a measured amount of fluid to said cylinder to move the slide through a predetermined distance.
This is one of 84,518 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84728&pn=1,808,462 Hub Cap Wrench Patentee: Martin Horeth - Brooklyn NY Granted:1931-06-02

The primary object of the invention resides in a wrench especially designed for applying and removing the right and left hub caps on automobile wheels of the wire spoke type without damaging or marring the same, it being appreciated that this type of hub cap embodies opposed lugs which at present receive hammer blows to tightly apply the cap or for loosening the same for removal, resulting in the breaking of the lugs or damage thereto. Another object of the invention is to provide a hub cap wrench embodying a handle provided with a head at one end thereof, the opposed side faces of which are concaved and which communicate with reversely disposed sockets for receiving the lugs of the hub cap of the respective right and left wheels of an automobile." A known example is marked with the patent number without "maker" or "brand" identifiers.
This is one of 84,518 patents currently in the database at datamp.org

]]>