UNT Libraries Government Documents Department - 30 Matching Results

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Improvement in Guards for Sheep-Shears.

Description: Patent for "an improved attachment that serves both as a guide and guard for preventing the cutting of the sheep in shearing, and by which even unskilled workmen can use the shears and cut the wool close to the skin without hurting the sheep, with by the point or edge of the blades." (Lines 15-21) Includes instructions and illustrations.
Date: September 24, 1878
Creator: Helmecke, Friederich A.
Item Type: Refine your search to only Patent

Improvement in Pumps.

Description: Patent for "a pump having two barrels of different diameters, the larger being subjacent to the smaller, and each provided with a valved piston, said pistons being both secured to the same piston-rod, in combination with a weight, arranged to counter-balance the added weights of the water-columns above the smaller and below the larger piston." (Lines 12-20) Includes instructions and illustrations.
Date: September 24, 1878
Creator: Beeman, Geraldo A. & Mason, John T.
Item Type: Refine your search to only Patent

Improvement in Valve-Gear for Steam-Engines.

Description: Patent for "an improvement in steam-engines which shall be so constructed as to give a full application of the steam and a free exhaust at regular intervals, which will enable the engine to be easily reversed, can be easily attached to any engine, which will enable an engine to be worked by water-pressure, will run smoothly and with very little friction, and will be very durable." (Lines 11-19) Includes instructions and illustrations.
Date: July 24, 1877
Creator: Davis, James H. & White, William
Item Type: Refine your search to only Patent

Improvement in Ironing Apparatus.

Description: Patent for "a machine for ironing clothing by means of a revolving heated roller, under which is passed a reciprocating table, on which the clothing is placed." (Lines 7-11) Includes instructions and illustrations.
Date: October 24, 1876
Creator: Bailey, Charles F. & Perrenot, George F.
Item Type: Refine your search to only Patent

Improvement in Car-couplings

Description: Patent for "an automatic car-coupling, that may also be readily coupled with the common pin-and-link and other couplings, and be adjusted without going between the cars, so as to avoid all danger" (lines 14-18).
Date: August 24, 1875
Creator: Harper, Peter
Item Type: Refine your search to only Patent
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