This oil-wick lamp is a patent model constructed by Henry F. Pearce of Hyde Park, Pennsylvania that received patent number 258,803 on May 30, 1882. Pearce claimed as his invention “a cap for a miner's lamp having a lining arranged to form a space and having the annularly-located perforations, whereby none of the perforations in the lining directly communicate with the vent in the cap” to prevent the escape of the oil through the vent and the closing of the vent by the gumming of oil or sediment.
This oil-wick lamp is a patent model constructed by John B. Deeds and William Mack of Terre Haute, Indiana that received patent number 281,846 on July 24, 1883. Deeds and Mack developed a lamp with an “oil tight lid.” The invention is described as “having its top or opening made slightly flaring, in combination with the hinged lid and the supplemental lid or disk with a packing of cork between them, and having holes therein opposite to each other, which communicate with a corresponding opening in the cork for the purpose of ventilation.”
This oil-wick lamp is a patent model constructed by Edward Gough, of Allentown, Pennsylvania that received patent number 229,117 on June 22, 1880. In his patent filing, Gough claimed as his invention “an improvement in lamps with the combination of a cast-metal body or can with a neck, provided with studs, of the cast metal cover, having notches and interior annular groove” constructed to secure the top to the lamp. The chain is usually attached to the top so it wouldn’t get separated from its lamp.
This is a pressure lubricator designed to force lubricating oil into the steam being supplied to a steam engine for the lubrication of the piston and valves. It forces the oil into the steam main against the pressure of the steam. It consists of a large glass reservoir into which is built a small simple hand pump. By working the handle of the pump the oil is drawn into the pump cylinder and discharged through the screw fitting at the bottom of the lubricator into the steam main or valve chest to which the lubricator is attached. The efficiency of lubricators of this kind depends entirely upon the judgment of the engineer or oiler. They are generally wasteful of oil.
The lubricator is marked “Buckeye Engine Company.”
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to Edgar B. Brooks, of La Porte, Indiana, February 10, 1880; no. 224270.
This is a nicely made brass model of an inward-flow reaction turbine having the register type of adjustable feed chutes or guide vanes and a cylinder water gate. The combination relieves the guide vanes of the function of cutting off the water when the wheel is to be stopped and makes it unnecessary that the guide vanes close perfectly, so that any looseness developed in them by wear is immaterial.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to James Jenks and Thomas J. Hart, Detroit, Michigan.
The principal feature of this injector is the method provided for varying the area of the water passage that surrounds the steam-forcing jet. A conical nut screwed onto threads on the outside of the steam tube forms one wall of the water space. The position of the nut on the tube and the area of the water space are changed by turning the nut. The nut is turned by a handwheel, worm, and worm wheel.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to Joseph Wotapek, of New York, New York, May 6, 1884, no. 298329; assigned to the Nation Manufacturing Co.
The improvement involved in this injector is the use of a nozzle holder by which the scale-incrusted nozzle or tube of the injector may be easily removed to permit cleaning. The holder is threaded into the shell of the injector from which it and the tube are drawn by unscrewing the bolder. The holder turns independently of the tube so that the tube itself is not subjected to torsion when being withdrawn from the shell.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Model with the application for the patent issued to Philander Rexford, of Syracuse, New York, August 14, 1883, no. 283144.
The model represents a furnace grate made up of long grate bars, which are pivoted midway of their depth and have projecting from the upper part of one side of each bar a series of teeth or ribs. When in their normal positions the bars stand obliquely and the smooth solid back of one bar and the ribbed face of the next form the two sides of a trough across the grate. The solid portion is designed to support very fine coal, while the ribbed portion permits the passage of air for combustion.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to William S. Friske, of Stamford, Connecticut, August 24, 1880, no. 231551.
The model represents a vertical steam engine with an oscillating cylinder, circular slide valve, and hollow cylinder trunnions for the admission and exhaust of steam. Steam is admitted to the center of the annular valve through the adjacent trunnion. The exhaust is conveyed from the valve seat around the cylinder in a hollow band cast on the cylinder for that purpose and leaves the engine through the opposite trunnion. The valve is driven by an eccentric on the shaft. The valve rod is provided with a cross head moving in a guide on the cylinder and oscillating with it. The eccentric rod carries a pin that slides in a curved slot in the cross head and produces an even motion of the valve thereby.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to John Warren, of Detroit, Michigan, April 20, 1880, no. 226813.
The motor represented is of the class intended to operate light machinery such as a phonograph but differs from most of the class in that it employs a spiral spring instead of the usual coil spring. It converts the rectilinear motion of the spring into rotary motion and equalizes the varying tension of the spring.
The free end of the spring carries a nut that engages in a spiral-grooved motor shaft, which revolves at the axis of the spring. A hand crank, worm, and worm wheel are used to compress the spring by turning the shaft in the reverse direction. The power is taken from a bevel gear on the shaft. A ball nut, which employs a ball to follow in the groove of the shaft, is used because an ordinary nut would not work in the groove of varying pitch. The varying pitch is used to compensate for the varying tension of the spring.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to George H. Corliss, August 8, 1882, no. 262209.
The model represents a flyball governor in which the motion of the slide, owing to a change in the speed of the engine to which the governor is attached, not only changes the position of the cut-off or throttle devices to regulate the speed of the engine but also changes the gear ratio between the engine and the governor to change the speed of the governor relative to the speed of the engine.
When the governor speed is increased by an increase in the speed of the engine, the balls rise and communicate motion to a slide, which, in turn, affects the throttle or cut-off to return the engine to its lower speed. At the same time the motion of the slide shifts a friction roller on its driving disk so that the governor speed is increased relative to the engine causing an additional motion of the slide in the same direction. As a result, the governor slide is given a greater motion for a given change in speed than would otherwise result.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to Robert Leuchsenring, of New Bedford, Massachusetts, March 9, 1880, no. 225226.
This is a form of engine in which a drum-shaped rotor turns in a casing, which is eccentric to the center of the drum, so that the drum runs against one part of the casing and a crescent-shaped annular space is formed between the casing and the drum. Water is admitted tangentially to the drum to one side of and away from the point at which the drum and casing meet. The water impinges upon abutments on the drum, turns the drum, and discharges from the engine about two-thirds of the way around the casing. The abutments on the drum slide into the drum to pass the casing and are held against the casings by springs.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to Henry Otto and Patrick F. Bell, of Bloomington, Illinois, December 18, 1883, no. 290650.
The model represents a D-slide valve of ordinary shape, with most of the back cut away and formed in the shape of a short hollow cylinder. This cylinder is filled with a closed piston suspended on rollers on a flat bar, which, in turn, is suspended from the top of the valve chest. The bar passes through a tunnel in the piston and is of sufficient length to accommodate the valve travel. The effect of this construction is that the steam pressure ordinarily exerted on the back of a flat valve is in this case exerted on a piston that is not a part of the valve but is suspended independently.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This oiler was submitted to the U.S. Patent Office with the application for the patent issued to Peter D. Hay (assignor to the Michigan Lubricator Co.), of Detroit, Michigan, June 9, 1888, no. 384762.
The model represents a sight-feed oiler in which the oil is contained in a cylindrical glass reservoir and flows by gravity through a needle valve to the bearing into which the oiler is screwed. The needle of the needle valve when closed is held against its seat by a light spring. It is opened by lifting the needle and giving it a short turn so that a pin on the shaft rises out of a slot and rests on the top edge of a brass thumb nut screwed into the central pot of the oiler. This nut may be run up or down on its threads and so determine the amount by which the needle will be raised and held from its seat and so control the rate at which oil is fed from the reservoir. The nut carries a spring-held pin that rests in shallow recesses in the top of the oiler and holds the nut in the position in which it is set and will not permit the nut to be jarred around by the vibration of the machine to which it is attached.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This model was submitted to the U.S. Patent Office with the application for the patent issued to A. L. Harrison, of Bristol, Connecticut, March 2, 1880, no. 225124.
The model represents a steam-engine lubricator in which the oil is contained in a reservoir fitted with a balanced diaphragm upon both sides of which the steam pressure in the main acts. The unbalanced pressure required to force oil into the steam is atmospheric pressure obtained by the use of a vacuum chamber when the engine is operating condensing, or the hydrostatic pressure of a water column when the engine is operating noncondensing.
The lubricator consists of an oval chamber divided by a flexible diaphragm. The space above the diaphragm contains the oil and is connected through a glycerine-filled sign glass to the steam chest or cylinder of the engine. The space below the diaphragm is connected to the steam pipe from the boiler, so that steam pressure acts on both sides of the diaphragm. A rod attached to the center of the diaphragm passes through suitable stuffing boxes to a piston in a cylinder below the diaphragm chamber. The space above the piston is connected to the condenser of the engine so that atmospheric pressure will exert an unbalanced force upon the under side of the piston, and through it upon the diaphragm, sufficient to force the oil out of the lubricator into the engine. When used with a noncondensing engine a water column in the steam pipe connecting to the under side of the diaphragm provides an unbalanced hydrostatic pressure on the diaphragm.
Reference:
This description comes from the 1939 Catalog of the Mechanical Collections of the Division of Engineering United States Museum Bulletin 173 by Frank A. Taylor.
This patent model demonstrates an invention for improvements in the smooth movement of multicolor presses. The invention was granted patent number 228517.
This patent model demonstrates an invention for a table with a sliding top that covered a series of slanting storage drawers for storage of prints, maps, drawings and books. The patent was granted number 350588.
This patent model demonstrates an invention for quoins slotted together along the oblique side, which included a key for their adjustment; the invention was granted patent number 228410. (Carlo Squintani was from London, England.)
This patent model demonstrates an invention for a mail box providing a "strong, light, durable, and convenient box or trunk for the transporation of letters and other matter." The invention was granted patent number 9253.