US349429A - James e - Google Patents

Description

(No Model.)

J. B. GILLESPIE. v DBVIGEPQR CONVERTING MOTION. I I No. 349,429. Patent ed Sept. 21, 1 886..

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UNITE STATE PATENT OFF C AMES E. einLESPIE, '1 wARwIomnEw YORK, ASSIeNoR To TH WAR- 'WIOK MACHINE COMPANY, OF SAME PLACE.

DEVICEYFOR CONVERTING MOTION.

Qfi-forming part of Letters Patent No. 349,429, dated September 21, 1886.

.,- Application filed May 14, 1886.

v To all whom, it may concern.-

. Beit known that 1, JAMES E. GILLESPIE, of Warwick, in the county of Orange and State of New York, have invented a new and useful Improvement in Devices for Converting Motion, of which the following is aspecification. My invention more particularly relates to .1 steam pumping-engines which are mounted upion a wagon or tru'ck,so as to form a steam fire- 6'35?" Aengine, portable from place to place; but it may also be embodied in stationary pumpingengines, which are employed for fire purposes in'factories and other places, and in other machines where it is desired to convert the rapid rotary motion obtained by a short-stroke engine into a long-stroke reciprocating motion. In the steam fire-engines now in use, which comprise a reciprocating pump-piston, such r. pump-piston is worked with a very short stroke and atahigh speed, and the consequence is that the water is churned back and forth through the valves and passages,and'the pump exerts or transmits in its useful effect but a small proportion of the power exerted by the engine.

It is of course obvious that an engine and pump of the ordinary construction, with a very longstroke, might be employed for fireengines; but such pump and engine would be '30 objectionable by reason of its total length, and

because of the space occupied.

An important object of my invention is to 7 provide for fire-engines or for other apparatus a mechanism which includes aerank-shaft with 3 a short-stroke crank and a rodsuch as a pump piston-rod-to which a long-stroke reciprocating motion may be imparted.

In carrying out my invention I combine with a reciprocating pump piston-rod or other 40 rod and a mangle-rack connected with the rod for operating it, and movable laterally rela tively to the rod, a pinion which engages with the rack, and a pinion-shaft which is mounted in fixed bearings, and may constitute the 4 5 crank-shaft of an engine. Bythis improvement I provide for operating a short-stroke engine at a high speed, and for transmitting from such engine the power necessary to operate a long-stroke reciprocating pump-piston Serial No. 202,132. (no model.)

with a short stroke, and a pump which oper- 5o ates with a comparatively long stroke.

In carrying out my invention I combine with the reciprocating pump piston-rod and a mangle-rack connected with the pump-rod for operating it, and movable laterally relatively to the pump-rod, a pinion which engages with the rack, and a pinion-shaft which is mounted in fixed bearings and is operated by the engine. By this improvement Iprovide foi' operating a short-stroke engine at a high speed, and for transmitting from such engine the power necessary to operate a long-stroke reciprocating pump-piston.

The invention consists inv novel combinations of parts, which are hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is an elevation of such parts of an engine and pump as are necessary to illustrate my invention. Fig. 2 is a sectional elevation thereof upon the plane of the dottedline a; 00, Fig. 1; and Fig. 3 is a plan thereof, the guides for the pump cross-head only being shown in section.

Similar letters of reference designate corresponding parts in the several figures.

A designates as much of a pump-cylinder as is necessary to illustrate myinvention, and B designates the pump piston-rod, to which is secured a cross-head, B, fitted to suitable guides, B for guiding it in its reciprocating movement. C designates an engine, which, as here shown, is of the oscillating type, having its trunnions at the outer or lower end of the cylinder, and a piston-rod, O, which is connected with a crank, 0, upon the crankshaft O This'crankshaft 0 is, or may be, provided with a flywheel, O, and is mounted in suitable bearings, c, on the frame 0. lhis engine will usually have a comparatively short stroke, and will transmit a rapid rotary motion to the crankshaft G". Of course an engine operated by other power than steam might be employed; but I have supposed this to beasteam-e'ngine, because that agent is most universal in obtaining power in fire-engincs.

The means employed for transmitting motion from the crank-shaft O of the engine to e amaze the reciprocating piston-rod .B of the pump consists, essentially, of a mangle-rack, D, and apinion, D. The mangle-raekDhasasliding connection with the cross-head Bof the pump, which will enable it to move laterally toward and from said piston-rod, and it is maintained in parallelism therewith during such lateral movement. As here shown, the upper end of the mangle-rack D is pivoted or otherwise secured to a block, d, which is capable of sliding toward and from the piston-rod B in the slideway or guideway d, provided in the cross-head B. As here represented, the mangle-rack D has its teeth presented internally, and is closed at the outer side by a shell or' plate, on which is formed a rib or bearer, (Z and said rib or bearer bears against a roller, (1", which is secured to a support, d, fixed to the frame 0, or to the pump-cylinder.

As represented in the drawings, the crankshaft O" and the roller (1 are upon the same side of the rib or bearer (Z and consequently as the crank-shaft and the pinion D are rotated in the direction of the arrow shown in Fig. 1 the mangle-rack D will be raised, and will carry with it the piston-rod B of the pump.

' It will be understood that the roller d mainas it engages with the left-hand side of the rack shown in Fig. 1.

It will be seen that by my invention I provide a more compact mechanism which will transmit from a short-stroke engine having a rapid revolution motion to a long stroke pump,which pump will be operated more e'ffectively than when it is operated with a very short stroke and thewater is churned or moved rapidly backward and forward in its passages.

In order to aid the transfer of the pinion from one side to the other of the rack, and to change the direction of the motion transmitted thereto, I have represented upper and lower cams, e e, which are secured to the fixed porwhich serves to move it toward the left hand of Fig. 1, or toward the piston-rod ofthe pump.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, with a reciprocating rod and a mangle-rack connected with the rod for operating it and movable laterally relatively to the rod, of a pinion engaging the rack, and a crank-shaft arranged in fixed bearings, and 011 which the pinion is secured, substantially as herein described.

2. The combination, with a reciprocating rod and a mangle-rack connected with the rod for operating it and movable laterally relatively to the rod, of stationary cams,wit11 which the rack engages near the ends of its travel to shift it laterally, and a pinion engaging the rack and secured upon a shaft in fixed bearings, substantially as herein described.

3. The combination, with a reciprocating rod and a cross-head thereon, of a mangle-rack having a sliding connection with the crosshead to provide for the lateral movement of the rack toward and from the rod, 'a roller having a fixed support, and with which a rib or bearer on the rack engages to aid in holding the rack parallel with the rod as it travels, and a pinion engaging the rack and secured on a shaft in fixed bearings, substantially as herein described.

4:. The combination, with the rod B and its cross-head B, of the internal mangle-rack, D, having a sliding connection at one end with the cross-head, and provided with a rib or bearer, (P, the roller d mounted on the fixed support and engaging the rib or bearer, and the crankshaft-O, mounted in fixed bearings and having upon it a pinion engaging said 100 \Vitnesses:

O. HALL, FREDK. HAYNEs.

It is hereby certified that in Letters Patent No. 349,429, granted September 21, 1886,

upon the application of James E. Gillespie, of Warwick, New York, for an improvement in Devices for Converting Motion, errors appear in the printed specification requiring the following correction: At the end of line 49, page 1, a period should be inserted, and all of the matter in lines 50 to 63 inclusive, same page, should be stricken out;- in line 44, page 2, a comma should be inserted after the word revolution, and

that the said Letters Patent should be read with these corrections therein that the 7 same may conform to the record of the case in the Patent Office.

Signed, countersigned, and sealed this 5th day of October, A. D. 1886.

[SEAL] H. L. MULDROW,

Acting Secretary of the Interior. Counter-signed: 1 B. B. VANCE,

Acting Commissioner of Patents.

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