https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=84725&pn=126,383 Improvement in Compound Steam Engines Patentee: Charles E. Emery - New York NY United States Granted:1872-05-07

Abstract: My invention consists, first, of the combination, with the lower cylinder of a vertical compound engine, of a smaller cylinder provided with braced legs which extends outside the cylinder-head of the lower cylinder, and are supported upon said cylinder, or, through rods, upon the engine -framing, such combination holding the upper cylinder rigidly and permitting the lower cylinder-head to be raised in the ordinary way a sufficient distance to permit the examination of the piston and the adjustment of its parts; second, long studs extended between the intermediate stuffing-boxes of a steepled compound engine, with nuts on same to secure both glands, in combination with divided and slotted glands, all parts being arranged so that they can be readily removed to permit the lifting of the cover of the lower cylinder; third, the arrangement of both the main and the cutoff valve-seats of the upper and lower cylinders at the same, or nearly the same, distance from the center of cylinders, to permit the valves to be operated by simple direct connections from one to the other; fourth, the method of working the steam expansively in a compound engine, by cutting off the steam in the larger cylinder at such point that the fall of pressure in the passages during the time that said cylinder is receiving steam there- from, is substantially restored during the time that the supply of steam to said cylinder is cut-off by the compression into the passages of the steam remaining in the small cylinder, and thereby transferring the expansion from one cylinder to the other with far less loss of effect than has ever before been accomplished when the cylinders were separated from each other; fifth, a pipe or reservoir to connect the two cylinders of a compound engine when loss of effect from the use of the same is prevented in the manner above expressed; sixth, an independently-adjustable cut-off for the larger cylinder of a compound engine, to enable adjustment to be made, as desired, to secure maximum economy or facility in starting; seventh, the arrangement, in the passages connecting the two cylinders of a compound engine, of devices for drying the steam, first by gravity and afterward by the direct application of heat to produce economy of steam; eighth, the arrangement of a check-valve in the passage between the two cylinders of a compound engine to assist in starting and backing the engine. Claim: The combination, with the lower cylinder of a vertical compound engine, of a smaller cylinder provided with braced legs which extend outside of the cylinder-head of the lower cylinder, and are supported upon said cylinder, or through rods upon the engine-framing, in such manner as to permit the raising of the lower cylinder-head.
This is one of 84,022 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84724&pn=482,530 Boring Apparatus Patentee: Frederick H. Kind - Racine, Racine County WI Granted:1952-04-15
Assigned to Racine Tool & Machine Co. - Racine, Racine County WI

This Boring Apparatus was patented in the U. S., patent #2,519,476. 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 84,022 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=42304&pn=1,075,710 Set Screw Or The Like Patentee: Dwight S. Goodwin - Waterbury CT Granted:1913-10-14
Manufactured by Goodwin Hollow Set Screw Company - Waterbury CT
Assigned to Oscar F. Fitzsimons - Waterbury CT

The patent covers the "dovetail" grooves in the recessed central socket of the set screw, and the corresponding splines on the wrench. Introduced as the GOODWIN HOLLOW SETSCREW; produced as the BRISTO screw and matching wrenches. Contemporary ads note the screws could also be turned by a screwdriver with appropriate blade width.
This is one of 84,022 patents currently in the database at datamp.org

]]> 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 84,022 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 84,022 patents currently in the database at datamp.org

]]>