US545988A - Multiple-cylinder engine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

. O. VEZIN. MULTIPLE CYLINDER ENGINE.

No. 545,988. Patented Sept. 10,1895.

TNESISES: j @4 INVENTOR ATTORNEY 2 Sheets-Sheet 2.

(No Model.)

0. VEZIN. MULTIPLE CYLINDER ENGINE.

Patented Sept; 10,1895.

' INVENTOR ATTORNEY I UNITED STATES men.

ATENT OSCAR VEZIN, OF NEW YORK, N. Y., ASSIGNOR TO THE CROSS ENGINE COMPANY, OF WEST VIRGINIA.

MULTIPLE-CYLINDER ENGINE.

SPECIFICATION forming part of Letters Patent No. 545,988, dated September 10, 1895.

A plication filed February 5, 1895. Serial No. 537,344. (No model.)

with the crank-shaft that is common to the several pistons, and in which the disk is laterally apertured to balance the valve and works between a seat on the engine-body and an annular plate which is adjustable relatively to said disk; and my invention consists in the combination, with the described rotary disk-valve in an engine structure such as above recited, of the said annular plate, a frame carrying said plate,- a shank on said frame, a sleeve on the head of the engine-body constituting or inclosing the valve-chest, into which sleeve said shank is fitted, and a setscrew working in the wall of said sleeve to the face of the outward end of said shank, as hereinafter set forth; and my invention comprises the combination, with the aforesaid rotary diskvalve, of said annular plate and its carrying-frame provided with a supportingshank seated as hereinbefore recited, when said plate and frame are in separate pieces, respectively, and said plate is loosely supported upon a perimetal face on said frame, as hereinafter particularly described.

In the drawings, Figure 1 is a rearward end elevation of a multiple-cylinder engine containing my invention.

Fig. 2 is a side elevation of the same; and Fig. 3 is a vertical central section of the engine on the line w as, Fig. 1. i

In the engine illustrated A A A A are the several cylinders radially arranged about a common crank-shaft B in pairs, with the cylinders ofeach pair located diametrically opposite to each other and with the arms I) of the several pistons c c, &c., reaching to and engaging the common crank b on the shaft. The cylinders are single acting and their ports are shown at 0 while the steam-inlet is shown at 0 the exhaust being into the cen tral chamber B of the engine through the ports 0 and thence out through a port 0 as is customary in engines of this class.

The valve which governs the cylinder-ports in the lead, cut-off, and exhaust of steam is composed of a formof the well known channeled disk B which is keyed to the shaft B, thereby rotating with said shaft, and which works to a circular seat b on therearward wall of the enginebody, and is provided with lat eral apertures, whereby it is balanced in the usual way. Thevalve-chamber is constituted in the head 13 0f the engine, which head may be interiorly recessed or made concave, as shown, conveniently for this purpose.

A detailed description of the operation of the parts thus far described is not necessary, as such operation is well known and will be readily understood, and no claim to novelty for such parts is herein made.

The devices to which my invention particularly relates concern the adjustment of the rotary disk valve in its seat; and these devices comprise an annular plate 0, which rests to the outward perimeter of the disk-valve, and between which and its seat I) the valve works, a frame D, which carries said plate within the valve-chamber, as shown, and is provided with a shank d, that is seated in and fits snugly within a sleeve (1, which may be cast or otherwise formed on the head B and a set-screw E, which works in the end wall of said sleeve and impinges upon the face of the outward end of said shank d. In constructing these parts and devices the plate 0 may be formed in one piece with or be rigidly mounted on the frame D but I prefer to constitute them separately and to mount the plate loosely upon the supporting-frame, as hereinafter set forth. It will be found desirable to compose the frame D in the form of a circular, apertured, concavo-convex disk, as shown, with its concave side toward the annular plate and with an annular perimetal plane face (1 at its rim, adapted to fit to the outward face of the plate, both faces of which should be planes parallel to each other, and to mount the plate upon said face on said disk by means of studs 01 fixed in the disk and fitting loosely into corresponding recesses in the plate, or vice versa. The shank d should preferably rise from the center of the rearward face of the disk-frame, as shown, and may be cylindrical in form, and the aXis of the said shank should be at right angles to the parallel planes of the faces on the plate and the face on the rim of the disk-frame In furtherance of the advantages derivable from my invention I find it desirable to form the shank d with a considerable diameter and length relatively to the size of the disk-frame, as shown. The axis of the bore of the sleeve 01' should also be at right angles to the described plane faces on the plate and frame, and the shank should fit closely within said sleeve, so that its-lateral vibration therein will be avoided. The set-screw E may be provided with an operating hand-wheel e, and is desirably given a lock-nut 6', working to a seat on the outward end of the sleeve, as shown. \Vhen a cylindrical shank d is employed, lugs b maybe provided on the inward face of the head B adapted to engage and prevent rotary movement of the frame D.

In adjusting the plate 0 to the disk-valve in engines of this class it is essential in preserving the effective working of the engine to at all times maintain the adjacent plane faces on the disk-valve and the said plate parallel to each other. The accomplishment of this is the object of my invention. It is obvious that the plate 0 being carried by the frame D, and said frame being supported by the single shank din the sleeve d, and said shank and sleeve being formed with their common axis at right angles to the face of the plateD, when the shank is moved longitudinally in said sleeve, as by the set-screw E, the plane of the face on the plate will be held parallel to the plane of the perimetal face of the diskvalve; and it is furthermore obvious that when the plate is made separate from the supporting-frame and mounted loosely upon the perimetal plane face thereof, as hereinbefore set forth, any variation from the parallelism of the perimetal plane face on the edge of the described disk-frame to the faces of the plate, due to an unequal expansion or contraction of the said frame and plate under the variations in temperature to which they are subjected in the engine, would not disturb the parallelism of the adjacent faces of the plate and valve.

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

1. In a multiple-cylinder engine in which the several cylinder-ports are governed by a disk-valve keyed to and rotating with the crank-shaft common to the pistons of the several cylinders, the combination with said diskvalve of an annular plate, between which and its seat on the engine-body said valve works, a frame carrying said plate, a shank on said frame, a sleeve on the valve-chest head in which said shank seats and has longitudinal play, and a set-screw working in the wall of said sleeve and bearing upon the face of the seated end of said shank, substantially as and for the purpose set forth.

2. In a multiple cylinder engine in which the several cylinder-ports are governed by a disk-valve keyed to and rotating with the crank-shaft common to the pistons of the several cylinders, the combination with said diskvalve of an annular plate, between which and its seat on the engine-body said valve works, a frame having an annular perimetal face upon which said plate is loosely or movably mounted, a shank on said frame, a sleeve on the valve-chest head in which said shank seats and has longitudinal play, and a set-screw working in the wall of said sleeve and bearing upon the face ,of the seated end of said shank, substantially as and for the purpose set forth.

. OSCAR VEZIN.

Witnesses:

ARDEN S. FITCH, A. T. FALES.

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