US269496A - Traction-engine - Google Patents

Description

2 Sheets-Sheet 1.(

(No Model.)

` B. YOCH.

TRAUTION ENGINE.

(No Model.) 2 Sheets-Sheet 2.

B. YOGH.

TRAGTION ENGINE.

No. 269,496. sented 1360.19, 1882.

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UNITED STATES BENHARD YOCH, OF ST. LOUIS, MISSOURI.

TRACTlON-ENGINE.

SPECIFICATION forming part of Letters Patent No. 269,496, dated December 19, 1885?.

(No model To all whom it may concern:

Be it known that I, BENHARD YocH, ofthe city of St. Louis, inthe State of Missouri, have invented certain new and usef'ul Improvement-s `in Traction and Portable Engines, of which the following is a specitication, reference heilig had to the accompanying drawings, forming part of the same.

My improvement relates to a portable engine for driving machinery, and which has capacity in itself for moving from place to place and for use as a traction-engine.

The tirst part of my improvement consists in making the body ofthe engine adjustable vertically upon the axle of the main wheels, and

placing upon the crank-shaft friction-wheelsV that may be brought in contact with the main supporting-wheels to turn them.

My improvement also consists in the insertion of a cushion between these wheels and the crank-shaft, and driving the wheels by means of a crank-and-link connection with the shaft, so as to allow the compression of the cushion.

My improvement also consists in the described means i'or adjusting the position of the crank-shaft.

My improvement also consists in combining withthe crank-shaft a windlass and cog-gear, by which the engine may be used when at rest to draw forward a wagon or other object, and the described means for throwing-the same in and out ofgear.

In the drawings, Figure lis a side elevation of the engine, with the two near wheels removed and their axles shown in section. The drive-pulley is also removed. Fig. 2 is a perspective view ofone of the pulleys of the steering-chain, and Fig; 3 is a similar view of the other chain-pulley. Fig. 4 is an enlarged detail illustrating the arrangement of lever by which the windlassclutch mechanism is operated. Fig. 5 is a rear elevation of the engine. Fig. 6 is a front elevation of the engine. Fig. 7 is a side elevation of one of the frictionwheels. Fig. 8 is a diametric section at 8 8, Fig. 7. Fig. 9 shows one of the friction-wheels, part in face view and part in section. Figs.

10 and 11 are detail views, showi-ngt-he ratchet device for raising and lowering the crankshaft and friction-wheels.

The main ground-wheels are shown at A and the steering-wheels at B.

C is the boiler, which forms the body of the engine.

D is the axle ot" the wheels A. The axle is vertically adjustable in guide-brackets E', attached to the sides ofthe boiler. The axle 1) is secured in the brackets by means of guideblocks F, through which the axle passes, and which slide in the brackets.

G is a jack-screw which worksin the bracket, and whose lower end bears upon the blockF, so that when the jack-screw is turned down in the bracket it raises the boiler and all parts that are fastened rigidly to it. turned by means 'of a ratchet-lever, H, whose ratchet-pawls I and J engage two sets of ratchet-teeth upon the screw. One pawl, I, and its teeth I act to cause the downward movement of the screw, and the pawl J and its ratchetteeth J' act to tuin the screw upward.. The pawls I and J are upon a single rockshaft,1{, having a toe, L, engaged by a spring, M, which acts to hold whichever of the pawls may be in use against its ratchctteeth, and at the same time to hold the other paw] out of contact with its proper teeth.

The engine-cyliiiders and their valve-chests are shown at N.

O are the connecting-rods, engaging cranks on the crank-shat'tl. The crank-shaft has bearing in the frame E. Upon the crankshat't P are friction-wheels It-one over each ot' the main wheels A. The construction is such that when the wheels R are in their lower position they bear upon the main wheels A, and, when the crank-shaft turns, cause the rotation ot' the main wheels and the movement ot' the engine over the ground. The friction-wheels are cushioned upon the shaft by india-rubber bushingR, so as to form a spring between the pulley or wheel R and the shaft, and so between the main n heel and the frame E. The wheel is coupled to the shaft, so as to cause its rotation therewith, by a link, S, connected by pintles at the ends to the wheel, and a crankarm, S', fixed to the shaft. This connection will allowfree movement of the pulley in the compression ofthe spring-cushion R'.

T are eccentrics upon the crank-shaft by which the slide valves T are operated.

U is a spur-wheel upon the crank-shaft, that may be made to engage a spur-wheel, V, upon a windlass-drnm, 7. The drum W turns free,

The screw is' and has also endwise movement on an arbor, X, xed to the frame E in a position parallel to the crank-shaft. The drinn is for reception cfa cable that is coiled thereon, and which extends from the drum, first over a grooved pulley, Y,.and then under a grooved pulley, Z, and then to any object it may be desired to draw towaid. the engine. The pulleys Y and Z turn free on the arbors a, and have endwise movement thereon to accommodate themselves to the position of the cable upon the drum. The drum has capacity for endwise movement upon the arbor X to bring the spur-wheel V into engagement with the spur-wheel U and to allow its disengagement. The endwise movement ofthe drum upon the arbor X is caused by a hand-lever, b, having a stud, b', entering a circumti'rcntial channel in a wheel, c, vthat is fixed to one end of the drum.

d is the brake, operated by connection to a brake-lever, e.

fis the steam-pipe, and g the exhaust-pipe, the latter extending through a feed-water heater. h, to the chimney t'.

The fore end of the boiler is supported on the wheels B by means ot'a tfth-\vheel,j, the axle h turning on the fifth-wheel to guide the machine. The axle is turned by means ot two chains, l, f1xcd at one end, l, to the bottom of' the boiler, and passing through pulley-blocks m near the ends of the axle, and back to a Windlass, a, turned by a Worm-gear, 0, operated by a hand-wheel, p. The ends of the chain are coiled around the windlass in op- .posite directions, so that as one end is coiled up the other end is uncoiled. It will be seen that the Whole Weight ofthe heavy end of the boiler may be brought. upon the wheels R when the engine is moved from place to place, and that the rubber cushions will act to prevent jars being communicated from the groundwheels to the engine. Thus a considerable amount of frictional power may be 'applied to the ground-Wheels without injurious shaking of the working parts.

P is a belt-pulley by which motion may be communicated to any machinery through medium of a belt thereon.

I claim as my invention- 1. A portable or road engine havingits rear portion vertically adjustable to adapt it to be supported either on the axle of or on the top ofthe main wheels, as set forth.

2. In a portable or road engine, the frame E, vertically' adjustable on the main wheels to support the rear portion of the engine either on the axle of or on the top of the main Wheels, as set forth.

3. The combination, with the wheels Rand A, and l'rame E, and axle D, of the jack-screws G, turning in the frame and bearing upon the sliding axle-bearing,r F, substantially as and for the purpose set forth.

4. The combination, with frame E, main wheels A, and axles D, ot' the levers H, each having rock-shaft K, provided with pawls I and J, toe L, and spring M, the jack-screw (l, and ratchet-collars l and J', the said levers adapted to raise and lower the jack-screws by the engagement of the pawls with the ratchetcollars, as set torth.

llhe combination, in a portable or road engine, of the engine crank-shaft, spur-wheel U thereon, arbor X, Windlass \V, having rotary and endwise movement on the arbor, spur- Wheel V'on the Windlass, arbors or rods af, and pulleys Y Z on the said arbors yor rods, substantially as and for the purpose set forth.

6. The combination, with tbe shaft P and the friction-wheel It, ofthe rubber cushion R', and crank S', and link S, substantially as and for the purpose set forth.

7. The combination of a driving or driven shaft, and a wheel or pulley thereon, a cushion'interposed between the shaft and Wheel, and a drivingfconnection between 'the shaft and wheel, allowing the compression of the cushion.

BEN HARD YOGLL XVitnesses:

SAML. KlvGHr, Gao. H. KNIGHT.

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