US1182650A - Interlocking packing-sleeve for rotary valves. - Google Patents

Description

S. GROSSLEY.

mrfmocmms PACKING SLEEVE FOR ROTARY VALVES.

APPLICATION NLE!) JAN. 24, 1916.

flntented May 9, 1916.

. of the packing sleeve sections.

19, said ports being arranged in staggered relation with respect to each other in accor-dance with the arrangement of the ports in the valve so as to register with the latter.

Each sleeve section is provided at one end4 with an inwardly extending flange 20 and at its opposite end with an inwardly extending flange 21, said flanges forming packing `rings which interlock with the grooves in the valve. The flanges 21 are annularly recessed, as at 22, in order to receive the flange 20 of the juxtaposed packing section 14. It will be seen that by such construction, the flange 21 is in engagement with the bottom and side walls of the valve, while the flange 20 adjacent thereto is in engagement with one wall. of the groove and the walls of the recess 22. The cut 18 is so situated that all the work in the cylinder has been completed before the port opening registers with a cylinder port. These cuts 18 are formed by angularlv cutting through a sleeve toform overlapping tongues 23 and 24, respectively'7 -it being noted that the in proper relation with respect to the bodyA of the valve, so that their port openings will register at all times with the port openings of the valve. This allows the packing sleeve to have an equal expansion and tension in the valve chamber, it being noted that the valve is supported at both ends. on ballbearings.'

In order to illustrate one manner of interlocking the valve sections with the gvalve, I have' shown each valve section as being provided vwith a plurality of apertures 25 which are of greater diameter than the falstening devices 26, which pass therethrough and are connected with the valve, so that each packing section is permitted to have relative movement with respect to the valve, in both a longitudinal and acircumferential direction. The packing sleeve sections are interlocked in place by means of the split rings 15 which provide for a tightt and provide at such points the same packing action as is present between juxtaposed ends Owing to the novel construction and arrangement of the flanges of the packing sleeve, a tight joint will be formed between the exhaust ports 27 and the intake ports of the cylinder, so that leakage will be prevented through such ports.

It is also within the scope of my invention ving a bushing for the valve and havin to have the side walls of a packing sleeve section eccentric at their inner periphery, as seen in Fig. 7, the advantage of which isA that the free ends of the packing sleeve are more resilient and expand more freely than if the sleeve sections were of uniform thickness throughout. Otherwise, this embodiment of my invention conforms in construction and arrangement to that seen in the other ligures of the drawing.

When an engine cylinder is under compression and also after the explosion takes place, it will be seen that there is no likelihood of any lea-kagebetween the engine cylinder and the-valve port, due to the novel construction and arrangement of the packing 'Sleeve and the manner in which it forms a tight joint betweenV such ports at such times. I am thus enabled to hold the compressionin the cylinder at all requisite periods. Furthermore, the packing sleeveforms a uniform bearing and serves to automatically take up any wear which takes place within' the valve chamber, thereby preventing leakage between the valveports.

In accordance with my present invention, I employ a packing sleeve which consists of a series of split rings which have-the double function of packing the valve and also provides a bushing and bearing for the valve, and since the valve is supported at its ends on anti-frictionbearings, it will be apparent that the packing sleeve is free at all times to expand and contract in accordance with conditions met with in practice.

It will now be apparentthat I vhave devised a novel and useful interlocking packing sleeve for rotary valves, which embodies the features of advantageenumerated as desirable vin the statement of the invention` and the above description, and while I have, in the present instance, shown and described typical embodiments thereof which will give in practice satisfactory and reliable results, it is to be understood that the same,

are susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing.' any of its advantages. j

Having thus described my invention, what iI claim as new and desire to secure by Letters Patent, isz-` l 1. The combination with a valve having annular grooves therein, of a packing sleeve consisting of split sections having inwardly extending flanges at each end forming packing rings adapted to interlock withthe walls of the grooves of the valve, said sleeve formjuxtaposed flanges of adjacent sections a apted to interlock with each other.

2. The combination with a hollow valve section having at ing flanges extendinginto the grooves of.

.valve and forming a register with the ports of the valve and -provided with afcut across both sides of the ports and with annular flanges to engage the grooves of the valve, and means to secure the sections to the valve to permit relative movement with respect to the valve to Aprovide for expansion and contraction of the sleeve opposite said port opening with f Athe valve.

4. The combination with a 'valve casing,

of a hollow valve mounted therein, and a sectional packing sleeve surrounding the bushing between the valve and the valve casing, having inwardly extending flanges at each end forming packing rings adapted to interlock with the valve, and the juxtaposed flanges of adjacent sections being adapted to interlock with each other.

5. ,The combination with a valve casing, of a hollow valve within the casing, antifriction devices on which said valve is mounted, said valve having ports through its periphery and provided with annular grooves on opposite sides of said ports, a packing sleeve surrounding said valve and forming a bushing between the valve and its casing and consisting of sections, each its ends inwardly extendthe valve, and provided with ports registering with the valve ports and split across the valve ports toform overlapping tongues.-

6. The combination with a valve casing having inlet and exhaust ports, of a valve within said casing, a packing sleeve surrounding said valve and consisting of interlocking sections, each ofsaid sections having ports to register with the valve ports, and having /a transverse cut on opposite sides of said ports and provided at each end with inwardly extending flanges forming packing rings, each section having opposite its ports an aperture through the wall of the section, and a fastening device of less diameter than the aperturev and extending valve, said said sections through such aperture and connected with the section, whereby relative expansion and contraction of the packing sleeve sections and valve is permitted.

' 7. The combination with a valve casing,

of a valve, and a packing sleeve interlocked with the valve and surrounding it to form a bushing between the valve casing and packing sleeve consisting of secof which is provided at one end with an inwardly extending flange having an annular recess therein and provided at its other end with an inwardly extending liange, the flange at one end o a section interlocking with the adjacent flange recess at tions, each the opposite end of the next section.

8. The combination with a valve casing having a centrally located inlet port and provided with cylinder inlet and exhaust ports, of a hollow valve having a centrally located inlet port and provided with outlet ports and with annular grooves on opposite sides-of the outlet ports, packing sleeves surrounding the valve and consisting of interlocking sections having at each end inwardly extending flanges forming packing rings which engage the walls of the valve grooves, and single split rings engaging the walls of the valve grooves adjacent the inlet port.

9. A packing sleeve for rotary valves having its outer periphery cylindrical and consisting of sections having `ports and split across the ports, each section having at each end inwardly extending flanges forming packing rings, of one section with the packing ring at of another section.

10. A packing sleeve for rotary valves having its outer periphery cylindrical and consisting of sections having ports and split across the ports, each section having at each end inwardly extending flanges /orming packing rings, the packing ring at of one section being adapted to interlock with the packing ring at the opposite end -of another section, and each section having apertures therethrough and located opposite theA port.

11. A sectional valve packing sleeve having its outer periphery cylindrical and its being adapted to interlock the opposite end inner. periphery eccentric, and provided with inwardly extending interlocking anges DE WITT S. DONAHAY.

the packing ring at the end` the end

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