R0ad-Engine. No
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W. T. HATCH, R0ad-Engine. No. 220,612. Patented Oct. 14, 1879. --N, UNITED STATES PATENT OFFICE. WILLARD T. HATCH, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO ATLAS is . ENGINE WORKS COMPANY, OF SAME PLACE. MPROVEMENT IN ROAD ENG NES. Specification forming part of Letters Patent No. 220,612, dated October 14, 1879; application filed June 10, 1879. To all whom it may concern: the shaft G, with valve-gear and all the ordi Be it known that I, WILLARD T. HATCH, nary accompaniments. of Indianapolis, in the county of Marion, in In consequence of the frequent stopping the State of Indiana, have invented certain and starting incident to miscellaneous work new and useful Improvements relating to Port on a farm and in like situations, a single en able Steam-Engines which may also be used gine is objectionable, on account of its liabil as Traction-Engines; and I do hereby declare ity to stop on the center. I provide means that the following is a full and exact descrip for conveniently enabling the engineer to as tion thereof. .- . sist the starting. I have devised an improved arrangement The lever M turns on a center, m, and is in of the parts for transmitting power from the a convenient position to be seized and oper engine to the driving-wheels. I use a single ated by the engineer on the foot-board. A : engine, with the obvious economy of construc connection, N, leads therefrom to a lever, P, tion and repair and the diminished friction due which turns loosely on the main shaft G. it to such, and have connected an efficient device When the engineer pulls the lever M and for starting the engine when it is stopped on turns the lever P, it takes a firm hold of the the center. fly-wheel G by means of a rod, Q, pivoted to The accompanying drawings form a palt of the lever P at the point d, with its other end this specification, and represent what I con taking hold of the periphery of the wheel G sider the best means of carrying out the in by means of a friction-block, R. This block vention. h being drawn tightly upon the smooth surface Figure 1 is a side elevation of a portion of an of the wheel G, gives a firm gripe when it is engine with my improvements applied thereto. pulled forward; but the connection allows it f : Fig.2 shows details on a larger scale. to let go and to drop by gravity and take a Similarletters of reference indicate like parts fresh hold so soon as the levers M and P are in all the figures. relaxed. The general features of the machine and At each movement of the hand-lever M the their uses and relations to each other will be fly-wheel Gis turned to an extent nearly equal sufficiently obvious from the drawings. I will to the motion of the lever P, and by one or econfine the description to the peculiar parts. more such movements the engine is easily 'H, is a shaft carrying the chain-wheel H thrown off its center and put in the position and a spur-gear wheel. (Not shown.) It is for starting. supported in a box, B, held by wedges C C at I have, in my experiments, made the fric the sides. The housing around the box B al tion-block R. of hardl wood. lows of motion forward and backward, The Modifications may be made in the details. | box is adjusted forward or back to compen I can adjust the shaft H forward and back sate for variations in the length of chain D. ward by screws instead of wedges. The hand : The movement of the box B is not in a right lever M may be dispensed with, and the hand line, but is in the arc of a circle which is con applied directly to a suitable loop or handle centric with shaft I, so as to always keep the on the end of the rod N. teeth of the gear-wheels engaged to the same A lever corresponding to P may be mounted depth, however the box B shall be adjusted, on each side of the fly-wheel G, and the con and thereby to communicate the power nection Q may be correspondingly duplicated, smoothly and reliably to the large gear-wheel to take hold more efficiently on the friction W keyed on the shaft 0 of the driving block R. wheels W. I claim as my invention E is a single steam-cylinder, equipped with 1. In a portable and traction engine having a piston and connections acting on a crank on a chain, D, for communicating power to the 2 220,012 bearing-wheels W, the shaft I, turning on a In testimony whereof...I have hereunto set fixed center, and the shaft H, turning on a my hand this 3d day of June, 1879, in the pres movable center, in combination with means, ence of two subscribing witnesses. CC, for adjusting the position of the latter in a path concentric to I, as and for the purposes WILLARD T. HATCH. herein set forth. 2. In a portable engine having a single cyl- Witnesses: inder, the friction-piece R, rod Q, lever P, and A. M. MoRSE, connectionN, adapted to serve as herein speci- IG. MCDOWELL. fied. .