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Publication numberUS1189477 A
Publication typeGrant
Publication dateJul 4, 1916
Filing dateJan 27, 1913
Priority dateJan 27, 1913
Publication numberUS 1189477 A, US 1189477A, US-A-1189477, US1189477 A, US1189477A
InventorsAbel Peytoureau
Original AssigneeAbel Peytoureau
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Internal-combustion engine.
US 1189477 A
Images(2)
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Description  (OCR text may contain errors)

A. PEYTOUREAU.

!NTERNAL COMBUSTION ENGINE.

APPLICATION FILED JAN-27.1913.

1,1 89,477. Patented July 4, 1916.

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A. PEYTOUHEAU.

lNTERNAL COMBUSTION ENGINE.

APPLICATION FlLED JAN-27,19I3. 1 189.,477.

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Patented July 4, 1916.

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ABEL PEYTOUREAU, 0F TUIl'IS, TUNIS.

I INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented July 4, 1916.

Application filed January 27, 1913. Serial No. 744,366.

To all whom it may concern Be it known that I, ABEL PEYTOUREAU, of 98 Rue dAutriche, Tunis, Tunis, Africa, have invented certain new and useful Improvements in Internal- Combustion Engines, of which the following is a specification.

This invention relates to explosion or in- I suitable curve at the junctions of the reverse halves of the groove to prevent jamming of the members carried by the piston rods), this semi-helicoidal cam groove being pref erably of uniform pitch; about this shaft are mounted a plurality of pairs of cylinders facing each other and having their respective piston rods coupled together, and operated by pins or members working in the said cam, groove. By this means the operation of the pistons is synchronous in relation to the rotation of the driving shaft, each revolution of the shaft corresponding to a to and. fro motionof each coupled pair of piston rods. It is, thus possible to vary the number of cylinders within wide limits and to employ a large number of cylinders, a matter of particular advantage in regard to engines for aerial work.

The invention further consists in providing between the shaft and the non-rotating part of the engine, ball bearings and ball thrust hearings or like vanti-friction bearings adapted to take the aXial and radial thrusts and thus reduce friction to a minimum. The pins or members that work in the semihelicoidal groove are likewise preferably provided with antifriction rollers fitted with ball bearings. v

The invention comprises other improvements which will appear from the following detail description and the claiming clauses.

The accompanying diagrammatic drawings illustrate a motor constructed to embody the improvements of the present inventlon.

Figures 1 and 1 represent a longitudinal mid-section of the motor which is of the four stroke cycle type. elevation of one of the drum-like elements constituted by the cylinders mounted in circular partition plates referred to later. Fig. 3 is a longitudinal section of Fig. 2; Fig. 4: is a diagrammatic cross section of the cylindrical frame serving as a connection between the two motor groups and for guiding the connecting. rods of the pistons Fig. 5 is a sectional view taken on the central vertical plane of Fig. 4. Fig. 6 is an elevation of an end frame of the motor showing the rocking levers for operating the exhaust valves; Figs. 7 and 8 show in longitudinal section and face view one of the fly-wheel disks.

To explain the application of the helicoidal principle, let us consider a helicoidal path having a pitch at least double the diameter, of the shaft. Take any starting point, say a, Fig. 1, and turn the shaft. On reaching a after a half revolution from the starting point a, let us reverse the direction of helicoidal path and continue 'rotating the shaft in the same direction and we shall return to the starting point a. According to the invention therefore I provide on the shaft a single helicoidal groove or guide-way partly of one direction and partly of the opposite direction and preferably of constant pitch, in which work the members in connection with the connecting rods of the motor pistons, a suitable curve being given to the junctions of the right and left handed helicoidal groove or guide-way at a and a" in order to avoid jamming of the members carried by the rods,.which are coupled in pairs as described later.

. A, Figs. 1, 7 and 8, represents the shaft having a thicker portion A in which is formed the right. and left handed helicoidal groove A in which work guide rollers .0 mounted on pins 0 which couple corresponding pairs of. connecting rods D of the motor. The rollers 0" arepreferably fitted with ball bearings c in order further'to reduce friction.

Referring to Fig. 1, the cylinders B of the motor with their. connecting rods D and pistons G are mounted parallel to the shaft A which is formed with two cylindrical portions or flanges E serving both for reinforcing the right and left handed helicoidal groove and as a fly-wheel. Assuming the shaft to be set in rotation, the first half revolution will impart a stroke to the pistons C and C which are at 180 to each other; this will be the first period (suction). The continuation of the motion will bring the pistons C and C back to their original positions, and this will be the second period (compression). The third period (explosion) will take place by the same movement as described for the first period, and as the shaft continues to rotate in the same direction, the fourth period (exhaust) will take place by the same movement as the second period. The setting of the cylinders relatively to the shaft is thus determined, since two pistons act at 180 to each other on two points and give rotation in the same direction.

The pistons C and C do the same work as the foregoing, but at one period behind same, and the succeeding pistons continue this same work, according to the angle at which the cylinders are set relatively to each other around the shaft.

To avoid defects of balance which might occur, I prefer to employ a considerable number of cylinders say twelve, fourteen, sixteen, or more, coupled in pairs as eX- plained, and disposed around the shaft at angular distances apart depending upon the number employed, the motor being regulated so that the explosions follow each other and give a continual thrust in the semihelicoidal groove.

Arrangement of the cyZimZers.The two groups of cylinders are each mounted in a nickel-steel frame, one of which is shown separately in Figs. 2 and 3. Said frame comprises three partitions F, G, H, the last mentioned having a flange I and the others double flanges I I. These flanges serve for fixing the jacket or casing of the motor, which will be of thin electrolytic copper to facilitate cooling. The three partitions, F, G, H, are each formed with a number of holes J corresponding to the number of cylinders in a group, say six, seven or eight, and bored to fit the outside of the cylinders. Each cylinder has three flanges or abutments K and three screw threaded parts L to receive screw threaded rings M serving to clamp the flanges of the cylinders against the partitions and screw threaded rings serving to clamp the cylinder heads against the flanges K and form a rigid structure. This arrangement of parts might be compared to the breech-drum of a revolver. Two such drums are required for a motor, since each comprises a group of cylinders.

It remains to assemble the two groups in such manner that the part fulfilling this purpose shall be light and strong, and at the same time serve as a longitudinal guide for the connecting rods. This part consists of a cylindrical frame l of nickel steel, see

Figs. 1, a and 5, bored internally to a diamare fitted with anti-friction devices such as balls to form an anti-friction slideway for the ends of the connecting rods.

Shoulders or projections O are provided on the circular frame N to fit in grooves P (see Fig. 3) formed in the inner partitions F of the drums and to be secured by bolts.

The drum-like frames that support the cylinders have a tubular portion or casing It surrounding the shaft and formed at the ends with cages R in which are fitted the ball bearings R and the ball thrust bearings R of the shaft A, the former serving to avoid friction and the latter to eliminate the end thrust of the pistons. The central tubular portion R will serve at the same time as a casing for the shaft and as a water jacket.

Zl[0tz'0n.-The ends of alined connecting rods D fit together with a scarf or overlapping joint so as to prevent distortion in any direction. The parts thus fitted together are secured by a pin 0 on which are mounted rollers c fitted with ball bearings c and running in the semi-helicoidal groove for transmitting the impulse thereto. Plates f forming part of the connecting rods D carry the suction valves 3.

At the outer. ends of the cylinders are fitted exhaust valves 9 actuated by a system of rods U passing through tubes disposed between the cylinders and rocking levers U, Figs. 1 and 6, the whole being actuated by a double cam groove S, Figs. 7 and 8, cut in the outer faces of the fiy-wheels E of the shaft A and intersecting each other at a given point of the face of the fly-wheel, so that the ends of the rods actuating the valves only once in two revolutions of the shaft meet a boss formed in one of the grooves, the whole being combined in such manner that the valves open and close according to the periods required for the exhaust.

The ignition may be effected by a high tension magneto and sparking plugs.

The high tension magneto should comprise a contact breaking device giving a spark for each break, and the current may be distributed to the cylinders by an cbonite plate keyed on the motor shaft, the said plate rotating at the rate of this shaft, and the magneto at 1- times the rate.

Instead of coupling the piston rods together a single or common piston rod could lie be employed for each pair of cylinders. Such a construction is included in the term coupled as applied to the piston rods.

It will be seen that with engines made according to'the present invention the cylinders may be fixed and the shaft and cam groove rotate, or the shaft may be fixed and the cylinders rotate.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

1. An internal combustion engine comprising in combination a shaft having a semihelicoidal cam groove extending about half a turn in each direction, a plurality of pairs of cylinders mounted around said shaft opposite each other and having their respective piston rods coupled together, members carried by said piston rods and working in the cam groove, cam disks mounted on each side of the cam groove, exhaust valves mounted at the outer ends of the respective cylinders, and rods and rocking levers for operating said exhaust valves, said rods being actuated by said cam disks, substantially as described.

2. An internal combustion engine comprising in combination a shaft having a semihelicoidal cam groove extending about half a turn in each direction, a plurality of pairs of cylinders mounted around said shaft opposite each other and having their respective piston rods coupled together, members carried by said piston rods and working in the cam groove, cam disks mounted on each side of the cam groove, exhaust valves mounted at the outer ends of the respective cylinders, and rods and rocking levers for operating said exhaust valves, said rods being actuated by said cam disks, and spring suction valves (8) mounted in the pistons, substantially as described.

3. An internal combustion engine comprising in combination a shaft having a semihelicoidal cam groove extending about half a turn in each direction, a plurality of pairs of cylinders mounted around said shaft opposite each other in two groups and having piston rods of alined cylinders coupled together, members carried by said piston rods and working in the cam groove, two parti tioned frames in which the two cylinder groups are respectively mounted, a substan tially cylindrical member to which the two frames carrying the groups of cylinders are secured, and guides for the piston rods in said substantially cylindrical member.

4. An internal combustion engine comprising in combination a shaft having a semihelicoidal cam groove extending about half a turn in each direction, a plurality of pairs of cylinders mounted around said shaft opposite each other in two groups and having the piston rods of alined cylinders coupled together, members carried by said piston rods and working in the cam groove, two partitioned frames in which the two cylinstantially cylindrical member to which the two frames carrying the groups of cylinders are secured and guides for the piston rods in said substantially cylindrical member, and antifriction devices fitted in said last mentioned guides, substantially as described.

5. An internal combustion engine comprising in combination a shaft having a semihelicoidal cam groove extending about half a turn in each direction, a plurality of pairs of cylinders mounted around said shaft opposite each other in two groups and having the piston rods of alined cylinders coupled together, members carried by said piston rods and working in the cam groove, two partitioned frames in which the two cylinder groups are respectively mounted, each of said frames having three partitions formed with flanges, a motor casing attached to said flanges, a substantially cylindrical member to which the two frames carrying the groups of cylinders are secured, and guides for the piston rods in said substantially cylindrical member.

6. An internal combustion engine comprising in combination a shaft having a semihelicoidal cam groove extending about half a turn in each direction, a plurality of pairs of cylinders mounted around said shaft opposite each other in two groups and having the piston I'Ods of alined cylinders coupled together, members carried by said piston rods and working in the cam groove, two partitioned frames in which the two cylinder groups are respectively mountedand which likewise form a casing for the driving shaft, annular seatings in said shaft casing, ball bearings (R and ball thrust bearings (R in said seatings, a substantially cylindrical member to which the two frames carrying the groups of cylinders are secured, and guides for the piston rods in said substantially cylindrical member.

7 An internal combustion engine comprising, in combination, a shaft, cam means on the shaft, a plurality of cylinders mounted around said shaft opposite each other in two groups, pistons in said cylinders, means carried by the pistons to cooperate with said cam means on the shaft for rotating the latter when the pistons are actuated, two partitioned frames in which the two cylinder groups are respectively mounted, a substantially cylindrical member to which the two frames carrying the groups of cylinders are secured and-through which said means carried by the pistons actuates.

8. An internal combustion enginecomprising, in combination, a rotatable shaft having a cam groove therein, a plurality of cylinders mounted around said shaft opposite to each other in two groups, pistons in said cylinders, means carried by the pistons to work in said cam groove to rotate the shaft, two

partitioned frames in Which the two cylinder name to this specification in the presence of groups are respectively mounted, a substantwo subscribing Witnesses.

tially cylindrical member to which the two I frames carrying the groups of cylinders are ABEL PEYTOUREAU' secured and through Which said means car- Witnesses: ried by the pistons actuates. DEAN B. MAsoN,

In testimony whereof I have signed my RENE L. J. BOISSON.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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Classifications
U.S. Classification123/56.8, 123/43.0AA, 123/74.00A, 123/47.00R
Cooperative ClassificationF02B75/26