US600671A - Jean marie anatole gerard - Google Patents

Description

M h s M e h s 2, m Am R Em @n AA w MR Tm m. d .0, .M o m lNo. 600,671.'

` Patented Mai. 15, 1898.

(No mmap.) 2 sheets-sheec 2..

34M., A. @ERARD ROTARY MOTOR..

No 660,671. Patented Mar. 15,1898.

mi 1% venan ihviTED STATES FATENT- EFICE.

JEAN 'MARIE ANA'roLE GERARD, or PARIS, FRANCE, Assisi-von 'ro LA SOCIETE LnNDUs'rRIELLE, or SAME PLACE.

ROTARY MOTO R.

SPECIFICATION forming part of Letters Patent No. 600,671, dated March 15, 1898.

Application led JulylQ, 1897. Serial No. 645,087. (No model.) l

' of steam employed in these motors by furnishin g a means for working with double and `even triple expansion, if desired.

rlhe invention consists in the arrangement of parts hereinafter described and claimed.

ln the accompanying drawings, Figure l is a transverse vertical section of the motor on the (line mof Fig. 2; Fig. 2, a plan view with the parts in section on the line x .fr of Fig'. 1

i parts.

andwith the movable parts removed. Figs. 3, 4, and 5 are detail views indicating various positions of the dist-ributing-valves. Fig. G

is a vertical section on the line y @j of Fig. 7,

showing a modification of Vthe distributing Fig. 7 is a plan view.

The machine shown in Figs. 1 and 2 is composed of two similar cylinders A A', separated by a partition, and there is arranged in each cylinder a disk piston B, mounted on a crank b of the motor-shaft a in such a Way as to revolve and circle freely on the periphery of the cylinder. The two cranks are placed at one hundred and eighty degrees to one another on the shaft ce, the latter passing through 4the ends of the two cylinders, which have a common dischargepipe c. Each cylinder A 4communicates with a cylinder D, placed atV right angles to it and closed at, its upper end by a plate d, which has a semicylindrical oscillating valve E, serving to regulate the admission into the cylinder D of steam arriving by the pipe F.' In the cylinder D there is arranged a piston or slidingblock G, forming a tight-fitting partition or abutment capable of protruding into the cylinder A, and this piston is provided on its lower face with a second semicylindrical oscillating Valve H,

the lower face of which bears on the circling disk pist-on B and forms a tight joint on this disk. The two valves E and Il rest in opposite directions on their` seats and are provided with arms e and z, connected by a pin f, which is-fixed on one arm but free to Work in a groove onslot formed in the other arm or in other suitable manner. Finally, the movements of these arms are limited by stops g.

The working of this machine is as follows: In the position indicated in Fig. f1 the valve Il, resting on the disk B, assumes an inclined position and by the intermediary of arms h and c forces the valve E to incline itself inV the other direction. In these positions the orifice i of the lower valveis closed and the oriiice j of the upper valve is opened and gives passage to the steam arriving by the pipe F, which steam forces the piston G downward and presses the valve H strongly on the disk B. This-pressure being inclined in the direction of the arrow acts on the crank b, and this motive action, which commences as soon as the center of the disk B comesto the right of the vertical, is `continued nntil the tangential point kof the disk reaches k'. In this posit'on (shown in Fig. 3) theoriice g of the valve E is closed and shuts off all communication of the cylinder D with the boiler, and the orifice iof the valve H opens and allows the 'volume of steam contained'in the cylinder D to penetrate into the cylinder A, where it acts by expansion on 'the disk piston B. Vihen the point of contact of this diskB has reached 7a2, Fig. 4, the orifice ,7 is still closed, and the orifice t' remaining open the expansion of the steam continues to be produced until the point of contact of the revolving disk B reaches 'the discharge-orifice c. At this mom enti, when the discharge is eected, the two oriiices 1I and j are closed, as Ashown in Fig. 5, which figure shows the position of i the valves when the disk B is at the highest' point of. its course.` The same actions are then reproduced periodically.- It will therefore be. seen that the cylinderD acts with full pressure for a half-rotation of the disk piston Y and that the cylinder A acts `by expansion during the second half-rotation of the said disk. e It is evident that during the irst halfrotation of the disk, as the orifice i of the roo Y valve H remains closed, there will be produced in the right-handl half of the cylinder- 'A a vacuum which would oppose a deleterious resistance to the movementof the disk. In order to avoidithis drawback, a discharge Z is arranged in the partition dividing the two expansion-cylinders A and A',1and the position of the disk placed behind this partition is indicated in dotted lines in Fig. 1 `and shows that the cylinder A contains at this moment steam which expands and which ,could freely passJ then into the right-hand -part of the cylinder A and thus act on the disk B during the second half. o f its rotation. Owing to the use of the passage or .port Z there is therefore produced an important increase in the volume devoted to the expansion of the steam and which may be considered as a double useful expansion of the mo- `tive steam', andA it is evident that the same effects4 will be produced alternately in the two cylinders A and A', arranged back to b ack.

Instead of using two cylindrical valves E and H, the reciprocal movements oi" which are determined by the connection of their arms e and h, the arrangement shown in Figs.V 6 and 7 of the accompanying drawings may be'employed. In this arrangement the lower, hollow valve H is not modified; but the upper one E is replaced bya valve m, provided with openings n' on its periphery and which receives. at given moments a slight rotary movement sulicientl to open or to clos'e' the admissionopenings o, arranged in its seat d. For this object the valve m is fixed on a spindle p, provided near its extremities with' helicoidal cams r and lr", and the piston G is provided with a cross-piece t, having helicoi dal cams s s at each side. These cams are arranged in such a way that when the piston G reaches the summit of its course-the fixed cam s encounters the cam 'r of the spindle p and brings the openings n o f the valve into register with the openingso, formed/in its seat, which thus allows the steam to pene# trate into the cylinder d. While the piston G is descending again, the opening remains open. `I (SeeFig. 6.) When the piston IG reaches the bottom of its course, the fixed cam's encounters the cam fr of the spindle p and displaces the valve m, the solid parts, of

which close the openings o, interrupting, all

communication of the cylinder d with the boiler. This action is' then reproduced at each revolution of the disk B. The play of the cylindrical valve Huot being modified it is evident that the mode of working of the:

motor remains the. same as 4in the preceding case.

It is evident that I do not limit myself to the arrangements and parts hereinbefore described in order to'insure the distributionof the steam in the machine,vthe said arrangements being capable of being varied `without modifying the spirit on which it is based, and, 'f

similarly', I 'may employ more than two cylinders A, coupled one to the other, if I judge it necessary.

I declare that what I'claim ils- 1. In a compound rotary motor composed of a cylinder having a discharge-pipe and containing a revolving piston working by expanp sion, and of a second cylinder carrying the inlet-pipe and containing a pistonhaving a rectilinear movement acting with. fullpres- Sure and bearing directly on the periphery of the revolving piston: the combination with l a semicylindricaloscillating valve H for re ulating the admission into the first cylinder A, of a valve m revoluble on its seat and havvmg openings for regulating the` admission into the second cylinder,l the spindle-of the said'valve being provided at its extremities with helicoidal cams adapted to b ealternately actuated at each end of the course 'of the `piston G by similar cams on this-piston, substantially as heieinbefore lset forth.'

2. The combination with a single motorshaft, of two similar rotary compound motors coupled and acting successively by direct action on the said motor-shaft, eachcompound motor comprising au expansion-cylinder containing a revolving piston and which is separated from the adjacent cylinder by a partition having an opening placed near the point Where` the steam admission is effected and `each expansion-cylinder communicating I los

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