https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=84723&pn=336,637 Hydraulic Pump Patentee: Percy Oliver Ott - Racine, Racine County WI Granted:1933-10-24

This pump was patented in the U. S., patent #1,965,388. Abstract: The invention relates to hydraulic pumps and more particularly to that type of rotary hydraulic pump wherein a rotor revolves around a stationary valve shaft provided with inlet and outlet ports that communicate during the cycle of operations with passages in the rotor which communicate with a plurality of pumping compartments formed between the body of the rotor, vanes in the rotor and a casing. Among the objects of the invention are to provide a pump of the character above described in which the capacity of the pump may be readily varied, to improve the rotor assembly and its association with the valve shaft and to insure at all times an efficient action of the vanes without the use of springs. Claim: In a pump of the character described, the combination with a supporting frame, a stationary shaft supported by said frame having a cylindrical valve portion provided with inlet and outlet ports and end portions of smaller diameter than said valve portion provided with inlet and outlet passages respectively communicating with said inlet and outlet ports, a rotor having an annular body portion mounted to rotate about said valve portion and end plates secured to said body portion, the body Portion of said rotor and one of said end plates having hub portions abutting said valve portion and mounted to turn on the end portions of said shaft, journals in said frame for said hub portions, a shiftable ring member revolving with the rotor and defining therewith a chamber, said ring member being slidable between said end plates, reciprocating blades mounted in the body of the rotor and working between said end plates and defining with said rotor and ring member a plurality of pumping compartments, said rotor having passages to establish communication between said pumping compartments and said ports in said shaft as the rotor revolves, and adjustable means in which said ring member is freely journaled for shifting said ring member relative to the axis of rotation of the rotor to vary the output of the pump.
This is one of 84,020 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84722&pn=2,519,477 Power Hammer Patentee: Frederick H. Kind - Racine, Racine County WI Granted:1950-08-22
Assigned to Racine Tool & Machine Co. - Racine, Racine County WI

Abstract: The invention relates to percussion tools, and more particularly to a reciprocatory or power hammer. One object of the invention is to improve upon reciprocatory hammers of the spring driven type by providing a double spring connection between the rotary driven shaft and the hammer associated with means for limiting the whip of the springs and thus greatly prolonging the useful life of the tool. It has been found in practice that where a single freely whippable spring is provided as a drive connection for the hammer, that frequent breakage of the spring occurs and that such a tool is commercially impracticable. Claim: In a device of? the character described, the combination off a rotary drive shaft, a reciprocatory hammer, a drive connection between said shaft and hammer including a compression spring and releasable detents normally engageable with said hammer to arrest its movement until released by an increase of tension in said spring, said hammer adapted to have impact engagement with a tool.
This is one of 84,020 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84721&pn=2,519,476 Boring Apparatus Patentee: Frederick H. Kind - Racine, Racine County WI Granted:1950-08-22
Assigned to Racine Tool & Machine Co. - Racine, Racine County WI

Abstract: The object of the invention is to provide an eccentrically adjustable boring bar and control means for the same whereby roughing, semi-finishing, and finishing boring operations with a single bar provided with a plurality of cutters may be readily accomplished. A further object of the invention is to provide a pivotally mounted boring bar mounted on a spindle provided with a sliding actuating sleeve or cam for angularly shifting the cutters of the bar and holding them in an adjusted position, the shifting mechanism for said bar including a member adapted to be moved to predetermined set positions. Claim: In a boring apparatus in which the work and a boring member are given a reciprocatory and rotary movement relative to each other, the combination with said boring member provided with relatively fixed roughing and finishing cutters projecting from diametrically opposite sides of said member, of a support for pivotally mounting said member for eccentric positioning relative to the work, means for angularly shifting said member about its pivot in diametrically opposite directions comprising a shiftable sleeve cam member operatively engageable with a part of said boring member, and means for longitudinally shifting said cam member in opposite directions to shift said boring member with its cutters in diametrically opposite directions to bring the different cutters successively into operative relation with the wall of the work being bored.
This is one of 84,020 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84720&pn=2,296,647 Hydraulic Pressure Booster Patentee: John H. McCormick - Racine, Racine County WI Granted:1936-12-15
Assigned to Racine Tool & Machine Co. - Racine, Racine County WI

Abstract: The invention relates to pump governors and more particularly to a governor for controlling the output of a rotary vane type hydraulic pump. The object of the invention is to provide a simple mechanist for automatically governing the eccentricity of the outer barrel of a vane type rotary hydraulic pump, so that the pressure of the fluid furnished by the pump will be substantially constant. Claim: In a hydraulic booster having a cylinder, a motor piston operating in said cylinder and a reversing valve for alternately respectively connecting opposite ends of said cylinder with a source of hydraulic pressure fluid and exhaust, the combination with said piston and said valve of a pair of control Valves for said reversing valve, means for operating said control valves alternately by the piston as it reaches the end of its stroke, hydraulically operated means for returning said control valves, and means for hydraulically interlocking said control valves to prevent their movement except at the end stroke positions of the movement of the piston, said valves in turn preventing movement of the reversing valve until one of said valves has been operated and the other has been moved to a position for actuation by the piston on its return stroke.
This is one of 84,020 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84719&pn=2,064,421 Pump Governor Patentee: Marcolm E. Erskine - Racine, Racine County WI Granted:1936-12-15
Assigned to Racine Tool & Machine Co. - Racine, Racine County WI

Abstract: The invention relates to pump governors and more particularly to a governor for controlling the output of a rotary vane type hydraulic pump. The object of the invention is to provide a with a rod, which extends through a bore simple mechanism for automatically governing the eccentricity of the outer barrel of a vane type rotary hydraulic pump, so that the pressure of the fluid furnished by the pump will be substantially constant. Claim: The combination with a pump having a rotor provided with vanes and a barrel cooperating with said vanes and rotor to form a plurality of pumping compartments, said barrel being shiftable to vary the eccentricity of the pump, a support, a cylinder on said support and connected with the discharge of said pump, a piston working in said cylinder in response to discharge pressure and directly connected to said barrel to shift said barrel toward a position of zero eccentricity, a spring opposing the movement of said piston by the pressure fluid, means including a part of said piston to vary the tension of said spring and a member adjustably mounted on said support for limiting the eccentric position of said barrel.
This is one of 84,020 patents currently in the database at datamp.org

]]>