US1415393A - Rotary engine - Google Patents

Description

Patented May' 9, 1922;.

2 SHEETS-SHEET I.

All.

l A @A T. RAUGSTAD.

ROTARY ENGINE.

APPLlcATloN FILED AuG.26. |921.

Patented May 9, 1922;

2 SHEETS-SHEET 2.

THOR RAUGSTAD, OF SANDNZES, NEAR STAVANGER, NORWAY.

ROTARY ENGINE.

Laieeea.

Specification of Letters Patent.

rmmanwenma Application filed August 26, 1921. Serial No. 495,529.

T all LU/lam it may concern.'

Be it known that I, THOR RAUGSTAD, a subject of the King of Norway, residing` at Sandnees, near Stavanger, Norway, have invented certain new and useful improvements in a Rotary Engine, (for which lhave liled application in Norway Aug. 9, 1920,'

marked thereon, which form a part of this specification.

The present invention has for its object to provide a rotary enoine adapted to be driven by liquid or gaseous medium (steam) and is also adapted to act as a'pump by having' its shaft driven from another source of power.

In the accompanying drawings, Figure 1 is a front view partly in section, of an engine. embodying my invent-ion:

Fie. 2, on the left hand side is a section on line A-B of Fig. 1 and on the right hand side partly a sectional view on line C-D and partly a side view of the engine.

The engine comprises a casing constituted by two side plates 19 forming a substantially circular chamber, the lower major portion of which has a uniform crosssectional area whilethe upper or smaller portion has a gradually increasing cross-sectional area. On the engine shaft which is journaled in the plates axially of the chamber, is fixed a rotor 11 which has a peripheral annular channel 12. preferably V-shaped in cross section, forming the pressure chamber of the engine. Mounted. in the top of the casing and extending into the annular channel 12 is an abutment 13 conforming to the crosssectional area of said channel.

A vane, operating in conjunction with the abutment, constitutes the driving element of the rotor. It consists of two blades 8, pivotally mounted on an axis 15 arranged on the l rotor at right-angles to the axis of the latter, said blades being movable laterally into and out of the channel 12 through laterally arranged slot-s formed in the side walls of said channel and are adapted to open and close the latter as hereinafter described.

On one corner of each blade, adjacent the plates 19, is formed a. trunnion 16 carry/'ing an anti-friction roller 17 which runs in a guide groove 18 formed in the inner face of each side plate 19 of the cas-ing.

Steam or other pressure fluid is supplied to a chest 2 through an inlet pipe `1 said chest containing a slide valve 4 which controls a. port 5 in an auxiliary slide 6, said port being connected by a passage ITwith the channel or pressure chamber 12 whereby they steam is supplied to the latter between. the vane and the abutment. To permit of reversing the engine a chest of the structure just described is mounted on the casing on each side of. the abutment and steam supplied through the inlet of one chest, for instance the inlet 1, will exhaust from the outlet 14 of the otherehest located on the opposite side of the abutment 18.. The exhaust or outlet ports one of which is shown at the left side of Fig. 1, are controlled by the auxiliary/melide valves 6. A lever 28 havinga handle 27 is so connected to one auxiliary valve by the rods 29 and and to the `other auxiliary valve by rods 81 and 82 that said 4valves aresimultaneously operated to close one port and open theother port.

Each slide valve 4 is operated from an eccentric 20 fixed on the engine shaft 10, said eccentric operating a pitrnan 21, connected to the arm 22 of a bell crank lever, the arm 23 of which is slidably connected to a rod 24 of said slide valve. The blades 8 of the vane are provided with Huid-tight packing strips 34 secured to the sides and outer end by any suitable means.

When operating the engine in one direc-v tion, the auxiliary slide valve 6 is in the position shown at the left side of Fig. 1, closing the outlet port 25 and channel 26, while the auxiliary slide valve in the other chest uncovers the outlet port of channel 14. Steam or other pressure medium entering inlet channel 1 passes into the channel or pressure chamber 12 between the left side of the abutment 18 and the vane, the blades of the latter being in position for closing the groove. As the vane approaches the right side of the abutment the blades are separated and moved out of the groove 12 by the trunnions 16 traveling in the grooves 18. The walls 19 of the casing are so formed that the grooves 18 cause the blades to be withdrawn from the channel 12 in approaching the abutment and to move back into the channel after passing the abutment.

To reverse the engine, the lever 274-28 is shifted to the le lit from the position shown in l so that the slide valve G closes port 5 and opens port and Channel 2G. The slide valve in the Chest at the right et the abut-ment 13 is siniiultaneously shifted se that the port of inlet Channel 33 is opened and the port oi' exhaustchannel ltis Closed.

l claim- 1. rotarv7 engine comprising a easing` a rotor journaled therein having a periphei channel, a stationary abutment prejeeting inte the latter, vane blades pinI "ed in the Channel and movable transversely through lateral slots formed in the sides ot' the shannel, the Walls of the easing constituting guides for the blades to move the latter into and out oit the channel during the movement of the rotor.

2. A rotary engine7 comprising)` rotor having` a peripheral Channel, a stationary abutment projecting into the latten vane blades pivoted in the Channel and movable transversely through lateral slots `formed in the sides of the channel7 a easing enclosing` the rotor having side Walls constituting guides for the blades to move the latter into and out of the channel during their movement in passing the abutment.

8. A rotary engine, comprising a easin` forming a chamber having a portion of uniform cross-sectional area and a portion of gradually increasing cross-sectional area, a rotor journaled in the easing having, a peripheral channel, a stationary abutment mounted in the easing at the point ot largest area and projecting inte the Channel, vane blades pivoted in the channel and movable transversely through lateral slots formed in the sides oit the Channel, trunnions termed on the blades projecting' into guide grooves formed in the Walls of the easing` whereby said blades are moved into and out of' the channel during' the movement of the rotor.

4. A rot-ary engine, Comprising a easing` `forming a chamber having` a portion ot uniform Cross-sectional area and a portion oit gradually increasing eross-sertional area, a rotor journaled in the easing having a peripheral Channel7 a stationary abutment mounted in the easing atthe point of largest areay and projecting into the channel, 'vane blades pivoted in the channel and movable transversely through lateral slots formed in the sides of the Channel, trunnions Yformed on the blades projectinginto guide grooves formed in the Walls of the easing whereby said blades are moved into and out ot the channel during` the movement oit the rotor, and means on opposite sides of the abutment for supplying pressure fluid to said Channel.

ln testimony that l claim the foregoing as my invention, have signed my .name in presence of tivo subscribing Witnesses.

THOR RAUGSTAD.

lllitnesses lBAUL BRONTIN, Lus El I-lnLLmGsBnD.

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