https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=58982&pn=331,178 Injector Patentee: John Sellers Bancroft - Philadelphia PA Granted:1885-11-24
Manufactured by William Sellers & Co. - Philadelphia PA
Assigned to William Sellers - Philadelphia PA

Abstract: Such injectors have usually been constructed with one overflow-opening between the end of the combining-tube and the receiving end of the delivery-tube, this opening discharging into an overflow-chamber provided with a check-valve to prevent an indraft of air when the injector is working, which overflow-opening will hereinafter be called the "forward overflow." Combining-tubes have also been constructed with two overflow-openings, and such openings will be designated hereinafter in the order they occur with the movement of the jet-that is to say, that one nearest the delivery-tube is the forward overflow, and that farthest from the delivery-tube is the rear overflow-consequently the large end of the combining-tube is in the rear of the rear overflow. Now, in order to obtain the greatest efficiency as a boiler-feeder, the discharging end of the combining-tube must be but little larger than the smallest diameter of the delivery-tube, and the overflow-opening is limited thereby; but with this proportion the jet will not form, and the instrument will not operate until the supply of water is reduced very much below the maximum quantity of water the injector is capable of delivering when at full work, so that to start the water- supply must be diminished, and when in operation must be increased until the full capacity is attained. This small size of over- flow-opening, moreover, necessitates great care in the admission of steam to the instrument, for, the area of the steam-nozzle being necessarily much larger than the overflow-opening, it will be evident that the full volume of steam would not be able to escape through this opening without, producing considerable back-pressure in the water-supply chamber, which would prevent the water from entering; hence the steam must not be admitted faster than the gradually-forming jet is able to unite with it. Claim: In an injector, the combination, in one single overflow-chamber, of a forward over-flow-space located near the smallest diameter of the delivery-tube, and a rear overflow-space io located in the combining-tube at a point in the rear of that where the cross-sectional area of this converging tube contracts to less than one and four-tenths that of the smallest cross-sectional area of the steam-nozzle.
This is one of 85,273 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=58978&pn=376,315 Injector Patentee: Strickland L. Kneass - Philadelphia PA Granted:1888-01-10
Manufactured by William Sellers & Co. - Philadelphia PA
Assigned to William Sellers & Co., Inc. - Philadelphia PA

Abstract: My invention relates, principally, to that class of injectors in which the water receives io successive impulses from two or more jets of steam arranged in the same axial line, the velocity of the water being continually accelerated without being diverted from its course until it has acquired the velocity requisite to enable it to enter the boiler, but is also applicable to injectors having but one steam jet under suitable conditions. It is an object of my present invention to make an injector which shall be automatic in its action under variable conditions of water- supply and steam-pressure. and that shall be capable of restarting itself if from any cause the jet should be broken as soon as the disturbing cause is removed; and to this end my invention consists in providing an injector with a forcing combining-tube and a water-chamber provided with a water-inlet port and an over- flow-port which communicates with the atmosphere, which chamber contains the receiving and overflow openings of this combining-tube, in combination with a forcing steam-nozzle which terminates forward of the receiving end of the combining-tube; and it further consists in an annular lifting steam- nozzle, an annular lifting combining-tube, a central forcing steam-nozzle, and a forcing combining-tube, the discharging and of the forcing steam-nozzle being forward of the lifting combining-tube; and it further consists in an annular lifting steam-nozzle, an annular lifting combining-tube, a central forcing steam-nozzle, and a forcing combining- tube, the discharging end of the forcing steam- nozzle being forward of the receiving end of the forcing combining-tube; and it further consists in an annular lifting steam-nozzle, an annular lifting combining-tube, a central forcing steam-nozzle, a forcing combining-tube provided with a forward overflow-opening, a rear overflow-opening located at a point in the rear of that where the diameter of the, tube contracts to less than nine-tenths that of the discharging end of the steam-nozzle, with one or more intermediate overflow-openings, and an overflow-chamber in which all the overflow-openings are located. Claim: A forcing combining-tube and a water-chamber provided with a water-inlet port opening into and an overflow-port opening out of said chamber, which chamber contains the receiving and overflow openings of this combining-tube, in combination with a forcing steam-nozzle which terminates forward of the receiving end of the combining-tube.
This is one of 85,273 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85470&pn=106,410 Improvements in saw tooth swaging machines Patentee: Henry Smart - Sheffield England Granted:1917-05-24
Manufactured by Spear & Jackson Ltd. - Sheffield England
Assigned to Spear & Jackson Ltd. - Sheffield England

An example has been seen that reads Elect and Pat. No. 106410. The patent assignment shows that Spear & Jackson was very likely the manufacturer—if not them, then it was a subcontractor or perhaps a licensee.
This is one of 85,273 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85982&pn=1,850,268 Positioning tool Patentees: Harry W. Kulp - Lancaster PA , Martin C. Dellinger - Lancaster PA Granted:1932-03-22
Manufactured by K-D Mfg Co. - Lancaster PS

Specialty tool for holding "keepers" during installation of valve springs in some type of engines. The specifications describe the specifics; the patent drawing includes a generalized drawing of the work environment. Listed in 1935 K-D catalog as no. 605 Valve Keeper Inserter.
This is one of 85,273 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85931&pn=1,490,200 Sanding machine Patentee: Emil F. Butts - Tacoma WA Granted:1924-04-15
Manufactured by Gregory-Butts Co. - Tacoma WA
Assigned to Edwin Gregory - Tacoma WA


This is one of 85,273 patents currently in the database at datamp.org

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