https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85301&pn=100,163 Einrichtung zur Festellung des Handgriffes und des mit diesem durch ein Gelenk verbundenen und mit einem Klinkenschaltwerk versehenen Kopfes von Schraubenschlüsseln u. dgl. in verschiedenen Winkellagen. Patentee: Granted:1925-01-15
Assigned to HIRSCH & MAYER - Stuttgart-Feuerbach Germany

Machine translation of claims: "Device for fixing the handle and the head of wrenches and the like, which is connected to it by a joint and equipped with a ratchet mechanism, in various angular positions, characterized by a U-shaped spring-loaded bracket, one leg of which is guided in the hollow joint pin and the other leg of which is guided in a bore of one joint part and each engages in one of the holes arranged on a circle around the joint axis on the second joint part." This is the "hinge joint" portion of the handle and ratchet in German DE-402,483 and British GB-205,819. Those patents' claims focus on the ratchet structure. This "hinge joint" structure appears in the handle of "ALL-IN-ONE" distributed in the U.S. by Emil Schwarz (Chicago). That tool has been linked to U.S. patent 1,629,205, German patent DE-425,020, etc. 1921 write-ups and ads for the ALL-IN_ONE Wrench (Chicago) which seems to have features corresponding to these patents raise additional questions. German ads for the ALL-IN-ONE supply names for a couple of manufacturers.
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]]> https://www.datamp.org/patents/displayPatent.php?id=81469&pn=981,499 Steering Mechanism for Road Freight Cars Patentee: Marquis J. Todd - Buffalo, Erie County NY Granted:1911-01-10
Assigned to Buffalo Pitts Co. - Buffalo, Erie County NY

Abstract: In the transportation of heavy freight by a train of road cars or wagons, each carrying between twelve and fifteen tons of freight, it is frequently necessary that the train be moved in reverse order so that a car or cars in or near the normal rear end of the train may be properly positioned to receive or discharge freight. This requires that the steering of the train be accomplished from what is now the forward end of the otherwise rear car. This steering is effected by shifting the carrying wheels. Claim: In a reversible road freight ear or wagon, the combination of a body, a centrally pivoted axle, carrying wheels thereon, a fifth wheel carried by the axle, a bodily detachable lever fulcrumed on the-car body at a point beyond the pivot of the axle, and means for detachably locking said lever to the fifth wheel to enable said axle and carrying wheels to be shifted relatively to the car-body, the point of locking the lever to the fifth wheel being close to the fulcrum of the lever.
This is one of 84,598 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=81849&pn=862,653 Rock Drill Patentees: Howard A. Pedrick - Philadelphia PA , Charles A. Smith - Philadelphia PA Granted:1907-08-06
Assigned to Charles A. Smith - Philadelphia PA

Abstract: The object of our invention is to construct a rock drill, actuated by the explosion of a gaseous compound, which will withstand the severe racking strains to which a rock drill is subjected. This object we attain by so designing the rock drill that there will be no direct connection between the drill plunger and the other mechanism of the drill, there being always a body of compressible fluid back of the plunger to resist the back lash, thus preventing the destructive jarring or racking other parts. Claim: The combination inn rock drill actuated by the explosion of a gaseous mixture, of a cylinder, an automatically actuated piston and a plunger mounted in the cylinder, spindle connected to the plunger, a spring concentrically surrounding said spindle and operatively independent of the piston, said spring being capable of resisting the action of said piston as it compresses the explosive mixture but insufficient. to overcome the force of the explosion of said mixture and menus for cushioning the return stroke of the plunger.
This is one of 84,598 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=82846&pn=501,224 Engine Patentee: John H. Eickershoff - Cincinnati, Hamilton County OH Granted:1893-07-11
Assigned to United States Engine Co. - Cincinnati, Hamilton County OH

Abstract: The primary object of my invention is to produce an improved engine of the continuous cylinder type, which, while possessing all the advantages incident to this general method of construction may be operated as an automatic or as a reversible engine at will and operate equally well in both directions. My invention consists in means for balancing the pressure on the resistance plates to relieve them from pressure against their seats or bearings at the moment they are to be actuated; in improved means for-actuating the distribution valves; in a construction and arrangement of parts whereby the engine may be reversed by changing the relative position of a single bearing; in provisions for automatic adjustment of the distribution valves and automatic reversal of the engine. Claim: In an engine the combination of a continuous cylinder, one or more pistons adapted to travel therein, one or more retractable, resistance plates, an exhaust normally open and. means for closing the exhaust as the piston approaches a resistance plate thereby balancing the pressure upon the resistance plates.
This is one of 84,598 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=81515&pn=257,588 Electric Light Regulator Patentee: Nathaniel S. Keith - New York NY Granted:1882-05-09

Abstract: My invention relates to the feeding and regulating devices of electric lamps; and its object is to produce a feeding mechanism that shall be perfectly steady and uniform in its action, and shall be free from the defects of overfeeding, vibration of the electromagnetic supporting devices for the carbon, accidental release of the carbon-carrying rod by a sudden jar communicated to the lamp, and other disadvantages incident to the constructions now in general use. In carrying out my invention 1 make use of an electromagnetic motor in a derived circuit, which is geared or connected to the carbon carrier, so that the movement of the latter in both directions is dependent wholly upon the movement of the motor. The reversal of movement in the carbon-carrier is produced either by positively reversing the direction of movement of the electro-magnetic motor or by operating a reversing-clutch interposed in the train of gear between the motor and the carbon-carrier, the reversal being in either case dependent upon the movement of devices actuated and controlled by electro-magnets placed in a derived circuit to the arc and in the main or principal circuit with the carbons. Claim: The combination of a carbon-carrier, an electric motor gearing with said carrier, so as to control its movement in both directions, said motor being placed in a derived or branch circuit, devices, substantially as described, for reversing the direction of movement of that portion of the motor-train which engages with the carrier, and two regulating or controlling electro-magnets operating said reversing devices, one of said magnets being placed in a derived circuit to the carbons and the other in the main or principal circuit with said carbons.
This is one of 84,598 patents currently in the database at datamp.org

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