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iP N => Fem P 25-25 F A VOL. V. NO 144. $2.00 PER ANNUM SINGLE Copies 5 CENT GARDNER’S PATENT THREE-CYLIN- DER ENGINE. In presenting this engine to the public, special attention is directed to the entirely new design and compact form of its con- struction, making it the most desirable en- gine known for the various offices that the steam engine is called upon to fullfil. It has go many points of excellence that are appar- ent, that it will only be necessary to enum- erate a few of the many advantages secured by this valuable improvement, and we have endeavored to confine ourselves to no more than the actual space required for such fn- formation. As the engine has no dead cen- ter, it can be started with the crank in. any position. ‘The connecting rods being always in compression, there is no sudden blow or pound upon the crank-pin, however loose the fit may be, with the engine running at any speed. The working parts being en- tirely encased, they are protected and kept free from any dust or grit that may b around the engine. . . The details ot construction are the result of long experiment and caretul study, com- bined with practice. The pistons being deep, light, and well packed, guide themselves in the cylinders, and are connected to steel connecting rods, the ends of which form the connections to the crank pin. On the end of each rod is 1 compensating box, which, in case of weary“tan be re- placed making the connection as good as ~new. ‘Chis arrangemebt admits of the en- gine automatically taking. up her own wear, as‘the thrust is always on thé ¢fank pin. The moment the steam is admitted to the piston, which is always at the best leverage CLEVELAND, O., MAR. 17 1888. Fig. 2 of the crank, it is communicated to the crank pin direct, without the friction attending the transmission of power to the different parts, as in the ordinary engine. The valves are the. ordinary slide, very much improved. Each one is scraped to a perfect fit, and they are absolutely tight against leakage of steam. The valve motion is the most simple ever produced, one eccentric, in one revolvtion, completes the travel of the three valves. | The pistons will follow up their connec- tion until worn out. All the working parts of this engine are made of the phosphor- bronze and steel. The crank shaft is counterbalanced so as to insure steady running while the engine is at work, and extends through boxes in the pedestal, which has a long bearing on the pul- ley end, sv as to reduce the wear to the minimum. On the front end of the shaft is acut gear-wheel, to connect with the gov- ernor gear, making the governor a part of the engine itself, thereby ensuring a per- fectly uniform motion to the engine. As the governor goes, so must the engine. ‘There areno belts to brenkor partsto give way (which often cause bad accidents), so that the governing power is as perfect and con- stant ascan be devised. All parts of the governor are accessible, and the speed of the engine can be changed instantly, while it is running, to any extent desired, within the range of the governor, 7 The only parts of the engine to pack against steam pressure, are the three valve ° | rods, which are very accessible, the packing | cups being deep, so that when once packed, aslight turn of the gland is all that is nec- essary, should any steam leak through them ; fe front and back bearings of the shaft being only packed against exhaust steam. Its form is unique; all angles and corners being avoided and everything being circular, adds materially to its strength, and it re- quires less room and weighs less than any engine known of the same power. Every part is accessible, and the engine can be stripped and dut together again in less time than the ordinary engine. ‘The cireular ring or belt, of which the cylinders form a_ part, also forms the valve seats, and it will be ob- served, that the valves and seats xre as close to the cylinders as is possible. The passages in the helt or ring are of sufficient size to secure boiler pressure as near as possible to the valve, thereby obtaining the shortest possible passage of steam under the valve to piston in cylinder, with only the thickness of metal intervening between the valve seat and cylinder. Steam is cut off so as to work expansively in each cylinder, thereby se- curing all the power of the steam before de- livery to exhaust. The high speed at which this engine may be run, admits of immense development of power in proportion to its size, which is of special advantage in many cages. Figure 1 represents a side view of Gard- ner’s patent three-cylinder engine, as ar- ranged fer stationary purposes, showing governor stand and_ steam pipe to engine main shaft’ staré’ with band-weeel and out-rigged pitimmer block; also the method of driving the governor by. cut-gear from the crank-shaft, and the patent automatic oil pump, which feeds the oil with every stroke Fig. 3 Fig. 4 of the engine, lubricating through the steam the internal. working parts constantly. Figure 2 represents a very simple and novel design of steam holster, suitable for any purpose where rapid hoisting is required such as on vessels, barges, steamers, docks, mines, quarries, breweries, pile drivers, and contractor’s purposes. Its operation is as simple as is possible to devise, avoiding any complexity of foot levers, handles, brakes and clutches. As the engine has no dead center, it reeponds immediately upon open- ing the throttle; it not being necessary to run the engine when not hoisting. After open- ing the throttle of the engine, the lever handle on the left engages the brake band, which sets the drum in motion, to raise or hold the load in place. One lever only be- ing necessary to operate the machine, are features of this improvement. ‘The-brake to which the hand lever is attached, is very simple and powerful, and the load can be raised easily by a slight pressure of the hand, and held or lowered, tast or slow, to any de- sired poirt. The gearing is attached direct to the engine shaft, no part of which is ex- posed, so it is impossible for the rope or line to foul in any way whatever with the gear- ing; this feature alone will readily com- mend the machine. On the extreme left of the. hoister is a winch head, which is very useful on board ship for hoisting sail or bringing vessel up to dock when in port, ete., ete, This head is provided with a crank adjustment, which can be used to drive a bilge or other pump. The small fly- wheel Continued to page 6.