https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85988&pn=560,084 Flue Cleaner Patentee: Moses G. Cook - Ashfield, Franklin County MA Granted:1896-05-12
Manufactured by The Challenge Tube Cleaner Co. - Lowell, Middlesex County MA
Assigned to George H. Allen - Lynn, Essex County MA

Abstract: The invention is an improvement upon that described in my application for Letters Patent of the United States, filed July 30, 1884, Serial No. 518,933 and it relates to various features of construction whereby clearance is provided the scraping-plates, whereby they are properly supported in action, whereby they are made easily removable, and whereby also they are caused to readily enter the flues. The flue-cleaner of said application has two heads, each conical in form or having conical ribs extending from two end plates, between which the scraping-plates are arranged, the end plates of the heads and scraping-plates being placed so closely together that there is no provision for a self-clearance of the plates and heads in use. My said cleaner also had cleaner-plates which could not be removed from the cleaner without detaching one of the heads. Claim: The flue-cleaner having the scraping-blades D, each of which has a backward-extending tongue or tail provided with the open-ended recess d', whereby the plate may be supported by the rod when in position and may be withdrawn laterally from the rod.
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]]> https://www.datamp.org/patents/displayPatent.php?id=24558&pn=184,775 Compound Implements Patentee: William M. Gray - Brooklyn NY Granted:1876-11-28
Manufactured by V, W. & W. - New York NY

The tool combines hammer, graduated wrench openings in the handle, tack claw, and bed-key socket. The specifications note Thomas Hagerty's July 20, 1875 patent (no 165,671) and differentiate this tool from the previous patent. Known example marked "BED KEY HAMMER // V. W & W.N.Y."
This is one of 85,277 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85985&pn=331,093 Boiler Tube Scraper Patentee: Azel B. Smith - Lowell, Middlesex County MA Granted:1885-11-24

Abstract: My invention relates to that class of tube-scrapers where there are several scraping-edges held in contact with the periphery of the tube by springs, the whole device being fastened upon the end of a long rod, so that it may be thrust through the entire length of the boiler-tube, carrying the dust and soot before it. Claim: In a boiler-tube scraper, the combination of the pair of radially-grooved heads with pairs of scraping-sections supported by the said heads, a central spindle provided with apertures at right angles to its axis, and spiral springs supported in the said apertures, each of the said springs acting upon a pair of the said scraping-sections to force them in opposite directions.
This is one of 85,277 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=75624&pn=331,018 Balanced Slide Valve Patentee: Daniel A. Woodbury - Rochester, Monroe County NY Granted:1885-11-24
Manufactured by D. A. Woodbury & Co. - Rochester, Monroe County NY

Abstract: My invention relates to improvements in o balanced valves of the class in which the valve works under a relief-plate, and has for its objects, first, to increase the facilities for both the induction and eduction of the steam without increasing the thickness of the valve; second, to afford more convenient means for obtaining the alignment of the stuffing-box and valve- rod guide; and, third, to provide better and more compact means for adjusting the pressure of the relief-plate upon the valve. Claim: In a slide-valve working under a relief-plate, the combination of the exhaust-cavity f, of passage or passages e, passages d and d', and passage or passages R.
This is one of 85,277 patents currently in the database at datamp.org

]]> 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.
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