US93053A - Improvement in steam-engines - Google Patents

Description

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CARR., or N nwvonn,l N. Y.

Letters; Patent No. 93,053. dazed .may 27, 1869.

IMPROVEMENT IN' STEAM-ENGINES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it ma/y conce/m Be it known that I, W. H. GARR, of the city, county, i and State of New York, have invented a new and useful Improvement in Steam-Engines, of which the fol-r` lowing is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in'whichf Figure l represents a side elevation of a steamengine, constructed in accordance with myi'mprovement;

Figure-2, a sectional elevation of the same, taken in a plane parallel to iig. 1; and

Figui-e 3, a sectional view at right angles to figs. l and 2, of certain parts connected with the admission and discharge of steam to-and from the cylinder. I

Similar letters of reference indicate'A corresponding parts.

My invention consists in the arrangement of a reciprocating cyunder, with a piston disposed to occupy a stationary position relatively to the reciprpcating motion of the cylinder, by or through which the driving-power is communicated, but both hung so as'to have a rocking motion on or from a trunnion or trunnions disposed beyond the stroke of the cylinder, and the piston having arranged within it, for operation in connection with suitable passages made therein or through the valve, which governs the motion of the cylinder; also, the invention includes certain details of construction and arrangement of the same for operating the engine when constructed as described.

Referring to the accompanying 'drawing- A represents the frame of the engin'e,and

B, its working-cylinder, which is arranged to recip` rocate in direction of itsl length, and lthrough theintervention of levers O C', attached to a rock-shaft, D,

a pitman, E, and crank F, serves to communicate the necessary motion to the driving-shaft G.

- His the piston, which'occnpies a stationary position relatively to the reciprocating vmotion of the cylinder, and is made hollow to receive within it vthe valve I, that workingin connection with suitable ports or passages a. and 11,11, made in or through the piston, serves to control the reciprocating action of the cylinder. This valve may be of any suitable description.

vlhe port a, in the arrangement shown, forms the exhaust, and the ports b b, the passages to opposite sides of the piston.

J is the piston-rod, which is made hollow, and is formed with va partition, c, down through it, which serves. to establish inlet and exhaust-passages dand 0,.

the inlet-passage d being in .communication with the steam-space or chamber on back of the valve, and the exhaust-passage e communicating, by'a connecting or bridge-passage, with the eXhaust-cavityia.

These passages d and e connect, at their lower ends, with cross-passages f and y, made in a hollow rockshaft, K, which has a partition, h, running longitudinally down it for the purpose.

Thsrock-shaft works in bearings i t', on the bedplate, and has the piston-rod firmly bolted or secured to it, 'whereby it serves to form the trunnions vfor the piston and'cylinder to oscillate on, to the extent of the versed sine of thearc described by the beam or lever O,-

with which-. thecylinder is connected. This shaft K works at Aits 'one and open end against and Iwithin an' adjustable packing-cap, L, that has the steam and exhaust-pipes connected with it at openings k k, which are in vcommunication with the pas- V sages f and g.

. The valve'I is operated by ya rod, m, arranged to run down the inlet-passage' d, within the piston-rod, and in gear at its foot withv a toe, n, attached to a rock-shaft, 0, which receives its Vmotion from the main shaft G, through an eccentric, r, rod, s, and crank, u.

Any other devices, however, may be used for conveying motion to 'the valve-rod arranged within the .piston-rod.

. An engine thus constructed and operating, combines eicency with compactness, the same admitting -of a. `comparatively short walking-beam or main lever, O,

being used without forming an objectionable workingangle, and without the aid of a pitman, while an independent valve-box is dispensed with, the piston being utilized as such, and the piston-rod serving to protect the ro'd which operates the valve, also serving to establish inlet 'and exhaust-passages, thereby doing away with independent pipesor connections from the valve.

Of course any other` fluid, gas, or vapor besides steam, may be`nsed for working the engine.

"The position of .the engine may, if desired, be reversed or changed to thatshown in the drawing.

What is here claimed, and desired to be secured by Letters Patent, is

1. The combination of the reciprocating cylinder B -with the piston H, arrangedjto have a stationary position in relation to the reciprocating cylinder, and both free to oscillate on or in connection with a rock-shaft, K, to which the piston-rod is attached at its outer end, or beyond the one end, of the cylinder, substantially as specified.

2. The arrangement of the valve l, lby which the admission and discharge of the steam to and from the 'working-cylinder are controlled within the piston, forl operation in connection with the ports or passagesal and b b, 'essentia1ly as described.

3. The arrangement, with relation to the main valve and ports, of the hollow piston-rod J, constructed with diaphragm c, forming inlet and exhaust-passages d e, and terminatingl in Va hollow oscillating bearing, substantially as shown and described.

W. H. CARR.

' Witnesses:

HENRY T. BROWN, l. H. BROWN.

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