US829231A - Rotary motor. - Google Patents

Description

PATENTBD AUG. 21, 1906.

A. PRIMAT.

ROTARY MOTOR.

APPLICATION FILED NOV.17, 1904.

3 SHEETS-SHEET 1 //w//v r0? X fizewandz'clizhzat A rrofiwim PATBNTED AUG. 21, 1906.

A. PRIMAT.

ROTARY MOTOR.

APPLIGATION FiLBD NOV. 17. 1904.

3 SHEETS-$113111 2.

No. 829,231, PATENTED AUG. 21, 1906 v A. PRIMAT.

ROTARY MOTOR.

APPLIUATION FILED NOV. 17, 1904.

3 SHEETS-SHEET 3 IHHIIIIHII serum OFFICE.

ALEXANDRE PRIMAT. 0F PARIS, FRANCE.

ROTARY MOTOR.

Specification of Letters Patent. Application fled November 17,

Patented Aug. 21, 1906. 1994. Serial llo. 888.110.

To all whom it may concern:

Be it known that I, ALEXANDRE Pnnm'r, formerly glover, actually motor manufacturer, of 103 Rue Lafayette, in the city of Paris, Republic of France, have invented mprovements Relating to Rotary Motors, of which the following is a full, clear, and exact description.

This invention has for its ob'ect a rotary motor operating, for example, y means of petroleum s int or of alcohol and characterized b t e combination of four rigidlyconneet pistons coupled in pairs by means of arms and cross-pieces in such a manner that all four are able to rock around a central point, moving in cylinders arranged circularly in the casing of the motor, cast in a single piece, this rocking movement being converted into a continuous circular movement by means of a peculiarly-arranged connesting-rod and crank, while the explosive mixture is conducted alternately into each of the four cylinders in such a manner that an explosion takes lace for each reciprocatory movement, whilg the suction, compression, and the exhaust of the burnt gases take place alternate] in each of the other cylinders, owing to t e provision of a set of valves ap ropristely arranged and operated.

iis invention is hereinafter described with reference to the accompanying drawings, illustrating a four-cycle motor, m which draWings- Figure 1 represents this motor in vertical section along the axis. Fig. 2 is a plan view of the motor. Fig. 3 is a vertical section through the motor on the line A A of Fig. 1. Fig. 4 illustrates a modification of the said motor, and Fig. 5 is a section through the exhaust valves.

In these figures similar characters of reference are employed to designate like parts.

As shown in the drawings, this motor comprises an annular envelop or casing 11, cast in one piece and in which cylinders b b b are formed in groups of two,scparatcd by means of a partition 0, forming a common cylinder end, while two diametrically opposite reccsses rt (3 separate the two groups. A wetor-jacket csurroumls those cylinders in order to insure their proper coo log. 0, Figs. 1 and 5, indicates the cxlmustmrts. Admission-ports are rovidod on tie up msite sides of the cylim (us. In the centre por tum of the annular casing iso cross-piorcf,

at the center of which is mounted a horizonl to! shaft 5', arran ed in such a. manner as to remain fixed an receive two arms h, connected one with the other by means of bolts. These arms, adapted to osci late freely upon the shaft g, are provided with cross-pieces t 1', connecting the pairs ofpistons 7" 7 7" j rigidly. The assemblage composed by the arms h k and the cross-pieces i i constitutes a beam. The lower cross-piece 1" receives, by means of an articulation k, a connectingrod l, embracing by the other extremity a crankin m, with counte ise m, forming part 0 the driving-shaft m ranged in a sleeve n, receives at one end the pulley fly-wheel o and at the other end a starting-crank p and two heiicoidal gearwhcels arranged in an intermediate position. see gear-wheels act u on other helicoidal gear-wheels r, r id wit the shaft 8 in order to transmit tieir movement to these latter and displace the cams t, with which these shafts are provided. The cams t suitably regulated, control, by means of the rode it o, the lip of the suction-valves x and exhaust-valves 3 arranged on the sides of the envelop and communicating with the interior of the cylinders by means of the admission and exhaust ports before referred to. Spiral springs z maintain the valve-rods constantly no contact with the cams t and insure theirclosing.

The operation of my improved motor is as follows: Assuming, for example, that the explosion takes place on the piston the opposite piston of the same pair w compress the explosive mixture during this time while the piston j" of the second pair will suck the fresh mixture, and the piston 7" will expel the burnt gas of the preceding explosion, and so on in succession alternately. Considering each of the pistons separately we therefore have, first, suction by forwar displacement of the piston; second, compression of the mixture by return movement of the piston; third, work effected by forward movement of the piston under the action of the explosion; fourth, exhaust b return movement of the )iston immediate y before the admission of the fresh mixture.

The forms, details, accessories, materials, and dimensions of this null-or may of course vary without thereby altering in any way the principle of the invention. Thus, for oxmnplo, as shown in Fig. 4, the drivingslmlt l, with pulley lly-whcol 2, might be arranged ull.l|o ooutor of the motor, upon This shaft, an.

for driving the cam-shafts which the beam would be mounted loosely. This shaft in this case is dispiaceable and is rovided with two cranks 3 and two connectmg-rods 4, upon which act the cranks 5, forming part of the intermediate shaft m', receiving the movement of the connectingrod 1, as abovestated. The shafts s for operating the valves are provided as before like- W150.

This motor may be operated by steam compressed air, or gas, the required detaii cha s of course being made.

I c aim- I 1. In an engine, the combination of a curved cylinder, a piston operating therein, a rocking member to which the piston is connected, a crank-shaft located at one side of said rocking member, a connection between the rockin member and crank-shaft, a valve at each side of the said c linder, means for operating said valves, suc means including a cam-shaft for each valve, the cam-shafts extending across the crank-shaft, and gearing from the crankshaft 2. In an engine the combination of a curved cylinder, a frame on which the same is mounted, a piston operating in the cylinder, :1 crank-shaft mounted in the frame, a connection between the iston and crank- 3c shaft, a valve at each si e of the c linder, means for operating the valves, sai means comprising a cam-shaft for each valve, the cam-shafts bein located at the respective sides of the cylin er and extending access the 3 5 crank-shaft, and gearin for driving the camshafts from the crank-s aft.

3. In an engine, the combination of a curved cylinder, a piston operating therein, a crank-shaft having its crank intermediate its 40 ends, a connection between the iston and crank-shaft, a valve at each side 0 the cylinder, means for o crating the valves, comprising a cam-she t for each valve, the camshafts being located at the respective sides of the cylinder and at op iosite sides of the crank-shaft, and gearin ior driving the camshafts from the crank-s aft.

The foregoing specification of my improvements relating to rotary motors signed by 5o me this 2d day of November, 1904.

ALEXANDRE PRIMAT.

Witnesses:

Ancnmann R. BAKER, MAURICE U. PIGNET.

Images