US823428A - Packing for rotary engines. - Google Patents

Description

No. 823,428. PATENTED JUNE 12. 1906.

1). MORELL.

PACKING FOR ROTARY ENGINES. APPLICATION FILED MAY 10. 1906.

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PACKING FOR ROTARY ENGINES.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed May 10, 1906. Serial No. 316,183.

in a Packing for Rotary Engines, of which the following is a specification.

My invention relates to rotary-engine packings of the type in which the lateral packing is effected by disks mounted in the cylinder and movable longitudinally of the latter, which are pressed against the piston by the driving fluid to an extent substantially equal to the pressure in the cylinder and in which the spaces between the packing-disks and the-opposite heads of the cylinder are each divided into a large number of compartments which communicate with the piston-chamber, so as to effect a better balance in pressure in the space between each packing-disk and the adjacent cylinder-head and the interior of the cylinder.

The primary object of my invention is to limit the movement of each packing-disk in a radial direction, so as to obviate close fitting of the packing-disks -in the cylinder, and

- thereby avoid the catching of the disk, which heretofore has occurred on the expansion of the diskupon becomingheated and a secondary object of the invention is to prevent the driving fluid from escaping over the circumference of the disk from a chamber within the cylinder having a relatively high pressure to a second chamber having a relatively lower pressure either by flowing in the direction of rotation of the piston or in an opposite direction.

The invention includes the combination and arrangement of component parts to be hereinafter described, and particularly pointed out in the claims.

In the accompan ing drawings, which illus trate one exemplification of my invention, Figure 1 is an end elevation of the packing-disk. Fig. 2 is a longitudinal sectional view on line 2 2, Fig. 1, through the end of a cylinder having one of the disks associated therewith. Fig. 3 is an edge view of a fragment of the disk. Fig. 4 is a fragmentary view of a modification. Fig. 5 is a detail sectional view of the modification. Fig. 6 is an edge view of the same.

But one end of a cylinder is illustrated in the accompanying drawings, as the opposite end is a duplicate thereof, and it is consequently unnecessary to either illustrate or describe the same in detail.

The packing-disk is indicated by a and is mounted in the cylinder to have a movement axially of the same, this disk being interposed between the cylinder-head and the adjacent end of the piston. The innerface of the disk, which comes into contact with the side face of the revolving piston, is made perfectly smooth, while the outer face of the disk is provided with a recess 1) concentric with the axis of the engine-shaft and with a plurality of radial grooves or channels which extend from the wall of the recess through the periphery of the disk. In each of these grooves a suitable packing-block e is located, which is pressed into contact with the adjacent head of the cylinder by one or more springs loacted in pockets in the disks in line wit the grooves. The head d has a circular projection with its periphery concentric with the axis of the engine-shaft, which fits snugly within the recess 6. The space between the periphery of the projection, the inner eriphery of the cylinder, and the opposing aces of the cylinder-head and disk (1, respectively, is divided into a series of independent compartments by the blocks e, and to better insure the independence of the com artments or prevent the leakage of steam om one into the other one ormore packing-blocks g is arranged between the periphery of the disk and the adjacent eriphery of the cylinder at the ends of each b ock e. As shown in Fig. 1, two blocks or strips g are associated with the end of each radial strip 6, the former being "located in channels or recesses in the periphery of the disk a and normally pressed outwardly by suitable springs g. As shown in Figs. 5 and 6, the peripheral packings of the disk are formed by continuations of the radial packings.

The portion of the packing-disk a which constitutes the inner wall of the recess 6 is always under a uniform pressure, while the peripheral part of the disk, which is divided into a series of compartments by the blocks 6, is

under varying pressures corresponding to the change of pressure in the cylinder during the revolution of the piston. The communication between these chambers and the piston-chamber of the cylinder is had through the spaces between the periphery of the disk at and the inner periphery of the cylinder at the points between the longitudinally-extending packing blocks or strips; but other IIO means may be provided to afford passageways. The packing-disk illustrated is for a rotary engine with a single shaft; but from the disclosure herein it willbe obvious to one skilled in the art how the form illustrated may be modified to adapt the invention to an engine with more than one shaft.

I claim as my invention 1 In a rotary engine, the combination with the cylinder of a packing-disk located at one end thereof designed to move axially of the same, said disk having a plane inner face designed to contact with the piston and a recessed outer face, a cylinder-head provided with a projection snugly fitting said recess and means for dividing the space between the disk and head outside of said projection into a plurality of compartments comprising a plurality of packing-blocks spaced a distance from one another, substantially as described.

2. In a rotary engine, the combination with the cylinder of a packing-disk mounted at one end thereof designed to have movement axially of the same, said disk having a plane inner face designed to coact with the end of the piston and a recess in its outer face, a cylinder-head provided with a projection snugly fitting within said recess and means for dividing the space between the disk and head to the outside of said projection into a plurality of compartments comprising a plurality of radially-arranged packing-blocks held in the outer side of the disk and a plurality of longitudinally-arranged packing-blocks arranged in the periphery of the disk substantially coincident with the radially-arranged blocks, substantially as described.

3. In a rotary engine, the combination with the cylinder of a packing-disk located at one end thereof designed to have movement axially of the same, said disk having a plane inner face coacting with the side of the piston and an outer face having a recess therein with its peripheral wall arranged substantially concentric to the axis of the enine-shaft, a plurality of channels radiating rom said recess and peripheral channels sub stantially coincident with said radial chan nels, a cylinder-head having a projection fit ting within the recess in the outer face of the disk and packing-blocks located within said channels, substantially as described.

4. In a rotary engine, the combination with the cylinder of a packing-disk located at one end thereof designed to have movement axially of the same, said disk having a plane inner face coacting with the side of the piston and an outer face having a recess therein with its peripheral wall arranged substantially concentric to the axis of the enine-shaft, a plurality of channels radiating from said recess and peripheral channels substantially coincident with said radial channels, a cylinder-head having a projection fitting within the recess in the outer face of the disk packing-block located in the channels and springs coacting with the packing-blocks located in pockets within the disk in register with the channels, substantially as described.

5. In a rotary engine, the combination with the cylinder of a packing-disk located at one end thereof designed to have movement axially of the same, said disk having an outer face provided with a recess and channels radiating from the recess and the periphery of said disks being provided with longitudinally-extending channels arranged on opposite sides of the ends of the first-named channels, a cylinder-head having a projection fitting within the recess of the outer face of the disk and packing-blocks held within said channels, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DAVID MORELL.

Witnesses THEODORE BUDSEN, PAUL SCHMIDT.

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