Latest Addition to the Directory of American Tools and Machinery Patents (DATAMP)

Subscribe to Latest Addition to the Directory of American Tools and Machinery Patents (DATAMP) feed
Recently added patents
Updated: 4 hours 24 min ago

FR Patent: 1,100,105

4 hours 24 min ago
Pince de Serrage Patentee: Granted:1955-09-16

This steward does not read French, and welcomes an English translation of the specifications and claims. The patent drawings describe a locking plier wrench with adjustable multiple pivot points, and the end of the lever handle hinged so it also serves as the lock release. The patent was issued to the French manufacturer FACOM, and does not identify an individual inventor. The FACOM 500 series locking plier wrenches appears to correspond to this patent. The patent is cited in the references for patent no. {2.799,195}.
This is one of 65,233 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 4,799X

July 6, 2020 - 12:27pm
Engine for dividing scales, gauges, etc. Patentee: Lemuel Hedge - Windsor VT Granted:1827-06-20

This important patent was granted to one of the earliest New England makers of rules. According to a 1987 Gristmill (MWTCA) article by Clifford D. Fales, "It has been claimed that Hedge's original dividing engine remained in use in the Stanley Rule and Level Co. plant at least as late as 1923." The organ in the church at Windsor, VT was built by "local inventive genius" Lemuel Hedge.
This is one of 65,222 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 766,835

July 3, 2020 - 12:21pm
Photographic Plate Holder Patentee: Alfred J. Merz - Yonkers, Westchester County NY Granted:1904-08-09


This is one of 65,190 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 3,557,857

June 30, 2020 - 12:13pm
T-Nuts Patentee: Henry F. Swenson - Roseland, Essex County NJ Granted:1971-01-26

Abstract: A T-nut for use in slots of machine tool tables and the like includes a threaded hole disposed at an angle to the upper surfaces of the extending wings of the T-nut. The upper surfaces of the extending wings of the T-nut are provided with toothed or knurled surfaces to insure that the engaged surface does not slide in the T-grooves of the worktable when the T-nut is tightened against this groove.
This is one of 65,189 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 1,758,775

June 25, 2020 - 12:04pm
Heat Dissipating Device Patentee: Charles C. Abbot - Pittsfield MA Granted:1930-05-13


This is one of 65,164 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 1,557,864

June 24, 2020 - 12:03pm
Wrench Patentee: Raymond A. Mull - Benton Harbor MI Granted:1925-10-20

The patent is for the spring-loaded pivoted gripping surface on the adjustable jaw of the wrench. The retaining pin for the pivot is held by the wrench frame, but can be removed when the jaw is removed from the frame to facilitate replacement of the gripping piece when it wears. Compare R.C. Morris' Sept. 1, 1925 patent (no. 1,551,763). MANUFACTURER ATTRIBUTION: After comparing examples of the HOLLAND STEEL CORP HOLLAND PATENTED 1925 (later STEELGRIP) pipe wrench, and the PAT. PEND BULL DOG GRIPS - NEVER SLIPS BULL DOG WRENCH CO. BENTON HARBOR MICH pipe wrench (announced in spring 1924), the BULL DOG wrench jaw appears to match the design in this patent. Mull was not mentioned in news items announcing formation of the BULL DOG WRENCH Co.
This is one of 65,164 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 2,874,985

June 21, 2020 - 11:54am
Drill chuck and spindle connection Patentee: Clifton J. March - Phoenix MD Granted:1959-02-24

This patent number was seen on a Black & Decker No. 655 3/4-inch mag drill.
This is one of 65,154 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 3,001,558

June 20, 2020 - 11:50am
Interchangeable wood cutter head Patentee: William W. Showler - Greensboro NC Granted:1961-09-26

This patent covers "hub mounted molder and shaper heads used in the furniture industry". See also Canada patent CA-643,022. The Concentro Service Corp. manufactured planer cutterheads that were apparently based on this invention. The cutterheads are made in segments, and each segment has a carbide knife permanently attached. This type of cutterhead can go a very long time between sharpening, but to sharpen it the head must be removed from the machine, which probably explains why very few such heads have survived. They do appear to have worked very well in use other than the sharpening hassles.
This is one of 65,148 patents currently in the database at datamp.org

Categories: DATAMP

GB Patent: 189,501,903

June 19, 2020 - 11:44am
Improvements in or Applicable to Injectors for Raising and Forcing Fluids. Patentees: James Gresham - Salford, Lancashire County England , George Kiernan - Salford, Lancashire County England Granted:1895-11-30


This is one of 65,141 patents currently in the database at datamp.org

Categories: DATAMP

CA Patent: 828,282

June 18, 2020 - 11:44am
High speed liquid cooled motors Patentee: Russell I. Robinson - Thiensville WI Granted:1969-11-25

This is the Canadian equivalent of US patent 3,479,541.
This is one of 65,139 patents currently in the database at datamp.org

Categories: DATAMP

CA Patent: 461,965

June 17, 2020 - 11:32am
Lathe machine Patentee: Frederick R. Francis - Billings Bridge ON Canada Granted:1949-12-27

See also US patent 2,495,927.
This is one of 65,138 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 396,361

June 16, 2020 - 11:28am
Rolling Die Machine Patentee: William H. Johnson - Racine, Racine County WI Granted:1889-01-15


This is one of 65,136 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 3,217,567

June 15, 2020 - 11:19am
Horizontal Boring Mill Patentees: Edward P. Bullard III - Fairfield, Fairfield County CT , Edward P. Bullard IV - Fairfield, Fairfield County CT Granted:1965-11-16


This is one of 65,135 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 3,110,996

June 14, 2020 - 11:18am
Grass cutting machines Patentee: Karl Rudolf Dahlman - Malmo Sweden Granted:1963-11-19

This is the patent for the "Flymo", a wheel-less lawnmower that was all the rage for a couple of years in the mid-1960s. In the USA the Flymo design was licensed to Toro. The Flymo mowers proved to be a bit difficult to control, especially on slopes, and left an irregular cut because the blade pushes down the air which tends to flatten the grass as well.
This is one of 65,130 patents currently in the database at datamp.org

Categories: DATAMP

GB Patent: 191,329,328

June 12, 2020 - 11:16am
Improvements in and Relating to Steam Injectors. Patentees: Harry Edward Gresham - Salford, Lancashire County England , Frank James Gresham - Salford, Lancashire County England Granted:1914-03-12

Abstract: Giffard injectors; regulating.-In a live-steam injector, an annular passage a between the usual live-steam nozzle b and the water-inlet cone c admits exhaust steam to be absorbed by the feed-water before it is impinged upon by the live steam. The supply of exhaust is regulated by a spring-pressed valve f on the exhaust passage g which is acted upon by the steam in the engine valve chest through the intermediary of the passage h, piston i, and stem j. A positively-operated valve m enclosing the valve f may also be used for regulation. The device for regulating the supply of exhaust forms the subject of Application 29,328/13. When no exhaust steam is available, the discharge from the small continuously-working ejector of a brake system may be admitted, or a throttled supply of live steam.
This is one of 65,127 patents currently in the database at datamp.org

Categories: DATAMP

US Patent: 298,329

June 11, 2020 - 11:05am
Injector and Ejector Patentee: Joseph Wotapek - New York NY Granted:1884-05-06


This is one of 65,109 patents currently in the database at datamp.org

Categories: DATAMP

GB Patent: 191,511,790

June 10, 2020 - 11:01am
Improvements in Short-Circuiting and Brush Lifting Gear for Alternating Current Motors Patentee: Henry Bertram Whitmore - Brereton Cottage, Cheshire County England Granted:1916-08-10

Abstract: Alternating - current induction machines; brush-holders; collecting-rings.- In slip - ring short - circuiting and brush-lifting gear for induction motors, each slip-ring P, Q, R is electrically connected to a pair of bars p p<1>, q q<1>, r r<1> which extend axially through the other two slip-rings but are insulated therefrom; each bar. may be made in two parts screwed into a slip-ring, as shown in connection with the bar q and slip-ring Q. The respective pairs of bars are connected together at one end by contact plates p<2>, q<2>, r<2>; at the other end, the three ends p<3>, q<3>, r' of the rotor windings are connected respectively to one bar of each pair. A rotating sleeve D carrying three tangentially-arranged shortcircuiting brushes E may be moved axially into contact with the plates p', q', r' to short-circuit the slip-rings, the edges of the plates being bevelled to allow the brushes to slide into position. The sleeve D is held in its end position by means of a spring- pressed ball d' engaging notches in the shaft. Axial movement is imparted to the sleeve by means of a crank-pin entering a groove therein and carried by a shaft f<1> fitted with a hand-wheel f<2>; the crank-pin is connected by a spring S to a projection s<1> on the casing tending to hold the crank in one or other of its extreme positions. Each slip-ring is fitted with a pair of brushes B carried from pins b<1> in brackets b<2>, and the extensions b<3> of the fingers b<4> overlap in elevation; the brackets b<2> are carried by, but insulated from, the brush-carrying bars b<5>, and the two brushes of each pair are connected together by a strip b<6> and are joined to a connecting-lug b<7>. The brushes are lifted off the slip-rings by the tall-pin h<5> carried by the lever H fulcrumed on the pivot h<2>; the lever H is fitted with an adjustable stop-pin h<3>, and a spring h<4> tends to keep the lever in position. The lever also carries a second tailpin h<1>, which extends underneath the extensions b<3> of the brush-fingers b<4>. In a modification, the contact plates p<2>, q<2>, r<2> are straight and are also tangentially arranged. The movement of the shaft f<1> may be effected automatically by means depending on the speed, voltage, current, or frequency.
This is one of 65,105 patents currently in the database at datamp.org

Categories: DATAMP