US2235118A

US2235118A - Rotary air motor

Info

Publication number: US2235118A
Application number: US146028A
Authority: US
Inventors: August C Ripke
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-06-02
Filing date: 1937-06-02
Publication date: 1941-03-18
Anticipated expiration: 1958-03-18

Description

M11/rch 18, 1941. A, C, R|PKE 2.235.118

. ROTARY In Moron ,Il m I H :Nvnzron lil August C. Ripke March 18, 1941. A. Q R|PKE 2,235,118

no'rARY In uo'roa l VFiled June 2, 1937 2 Sheets-Sheet 2 2 Il IHIIIW ,Ill 25 2/ 411i im INVFNTGR August C. Ripke ATTORNEY Patented Mar. 18, 1941 UNITED STATES PATENT OFFICE Z Claims.

This invention has relation to a mechanical device for transforming power as for instance compressed air into rotary motion and/or vice versa.

An object of the invention is to provide a transmission assembly that can be built strong and compact and at relatively low cost, avoiding extraneous and unnecessary parts as far as possible.

A further object of the invention is toprovide an improved structure of what may be alternatively an air motor or air compressor in the form of a piston, on the periphery of a revolvable disk, that travels in a tubular stator.

A further object of the invention is to provide an air motor with a piston revolving in an annular tube or cylinder with a knife valve between its inlet and outlet ports that swings out of the way to allow the piston to pass.

A still further object of the invention is the provision of a device of the nature and for the purpose set forth that is characterized by structural simplicity, durability and efficiency being thereby rendered commercially desirable.

To the accomplishment of these and related objects as shall become apparent as the description proceeds, the invention resides in the construction, combination and arrangement of parts as shall be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended.

The invention willbe best understood and can be more clearly described when reference is had to the drawings forming a part of this disclosure wherein like characters indicate like parts throughout the several views.

In the drawings:

Figure 1 is a side elevation of the device;

Figure 2 is a transverse section of the air motor;

Figure 3 is a front elevation of the revolving transmission; and

Figure 4 is a sectional detail of the air motor valve.

The air motor comprises an annular hollow tube-like stator casing I with an open slot 2 at its inner circumferential median to accommodate a revolvable disk 3. The periphery of this disk 3 enters the tube through the slot 2 and 5o these related parts are air sealed as found best in practice, a cross-head flange 5 on the disk being here shown. The purpose of the disk is to support the piston I that is caused to revolve in the tubular stators race-way under propul- 55 sion of compressed air entering through the port 8 while pressure ahead of the piston finds outlet through the port 9. A laterally swinging knife valve or abutment I0, pivoted on the base II, is enclosed in the housing I2 and operates through a slot I3 in the side wall of the tube I to divide 5 the inlet and outlet ports 8 and 9 and swing out of the path of the piston 1 to let it pass. This valve or abutment I0 has an outline corresponding with the interior cross section of the tubular raceway of the stator I when the flange 6 of the 10 rotor disk 3 is disposed therein; the said crosshead flange 6 having its periphery transversely describing the arc in which said valve or abutment ID swings.

The mechanical transformer or transmission 15 consists of a xed horizontal shaft I5 supported on a pair of spaced standards I6, I6. A gearwheel I1 is keyed to this shaft and on it revolve a pair of -diametrically opposite gears I8, I8' of similar diameter. Each gear I8, I8 has an axial 20 shaft I9, I9' projecting forwardly in one case and rearwardly in the other. On the outer end of the shaft I9, I9 is a chain sprocket 20, 2U' connecting by an endless chain 2I, 2|' with a

like sprocket

22, 22 rotatable on the fixed shaft I5. 25

A revolvable framework 23 turns on the fixed shaft I5, comprising four Adiametric arms 24 spaced on opposite sides of the gear-wheel Il and connecting the shafts I9, I9' of the planetary gears I8, I8. These arms 24 are united by 30 cross pieces 25 at opposite ends.

An offset coupler 2B connects the disk 3, axially aligned with the shaft I5, with the front gear chain sprocket 22, while to the rear chain sprocket 22', on the fixed axle I5, an offset power 35 wheel 21 is attached.

In use, it will be seen that as pressure is fed to the stator tube I by the inlet port 8, the piston carrying disk 3 will be made to revolve carrying with it the front chain sprocket 22, that 40 by the chain 2l turns the sprocket 20, its axle I9 and the planetary gear I8 thereon causing the same, and the associated framework 23, to travel around the fixed gear wheel I1. The diametrically opposite planetary gear I8 travels in 45 unison and in doing so turns its shaft I9 and chain sprocket 20' that by the rear chain 2|' rotates the gear chain sprocket 22 and its offset power-wheel 2l olf which latter the power is taken.

From the foregoing description taken in connection with the accompanying drawings, it will be manifest that a mechanical device for transforming power is provided that will fulfill al1 the necessary requirements of such a device but as 55 many changes could be made in the above description and many apparently Widely diierent embodiments of the invention may be constructed within the scope of the appended claims Without departing from the spirit or scope thereof, it is intended that all matters contained in the said accompanying specicaton and drawings shall be interpreted as illustrative and not in a limitative or restrictive sense.

What I claim as new is:

1. An air motor comprising an annular, hollow, tube-like stator casing; an open slot at the inner circumferential median thereof; a revolvable disc with its periphery entering said tube through said slot; a cross-head flange on the periphery of said disc inside said tube-like stator casing providing an air seal therefor; a piston carried on said disc and revolvable in said tube like stator; inlet and outlet ports in said stator; and a swinging abutment therebetween adapted to swing clear to pass said piston, said swinging abutment corresponding in outline with the interior of said tube-like stator casing with the rotor flange therein and said flange on its periphery describing the arc in which said abutment swings.

2. In combination with claim 1, a means for operating said swinging abutment, comprising a cam laterally offset from said disk and a push rod pivotally attached to said swinging abutment and normally held spring-pressed against said cam.

AUGUST C. RIPKE.