US1784902A

US1784902A - Power-shaft connection for internal-combustion engines

Info

Publication number: US1784902A
Application number: US401587A
Authority: US
Inventors: Joseph V Maurais
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-10-22
Filing date: 1929-10-22
Publication date: 1930-12-16
Anticipated expiration: 1947-12-16

Description

Dec. 16, 1930. J. v. MAURAIS 1,784,902

POWER SHAFT CONNECTIQN FOR INTERNAL COMBUS I'ION ENGINES Filed Oct. 22, 1929 2 Sheets-Shee\ l I n venfmf A ttor'neg Dec. 16, 1930. I v MAURAls 1,784,902

POWER SHAFT CONNECTION F OR INTERNAL COMBUSTIONENGINES Filed Oct. 22, 1929 2 Sheets-Shae! 2 Inventor QzW',

A ttorney Patented Dec. 16, 1930 I UNITED STATES PATENT oFFIcE JOSEPH v. MAUBAIS, or inUscA'rINE, IowA POWER-SHAFT connno'rron non INTERNAL-COMBUSTION nnemns Application filed October 22, i929. Serial No. 401,587.

This invention relates to internal combustion engines and is particularly adaptable-to the connecting means that transmits power from the piston to the crankshaft.

5 An object of the invention is to provide for using a straight crank shaft for an internal combustion engine, and furthermore,

to arrange the power arm connection'so that power will be exerted at all times in a direction substantiallyperpendicular or at a slight cient in its operation and comparatively in? expensive'to manufacture andinstall. a

With the foregoing and otherobjects in view, the invention consists in the novel con struction, combination and arrangement" of parts as will be hereinafter more specifically described and illustrated in the accompanying drawings, wherein is disclosed an embodiment of the invention, but] it is to be understood that changes, variations and modifications maybe resorted to without departing from the spirit'of the claims hereto appended. V

In the drawings, wherein like reference characters denote corresponding parts throughout the several views,

Figure 1 is a vertical section in detail through a piston illustrating an adaptation therewith of the device in accordance with the present invention.

Figure 2 is a. sectional view through the piston illustrating in end elevation an application of the present. invention therewith.

Figure 3 is a fragmentary portion in detailedcross section of thecrank shaft with the cam arranged thereon.

Figure 4 is a top' plan view of a-fragmentary portion of the internal combustion engine and the guide arm in accordance with the present invention.

1 In utilizing the connection of the present invention, it is to be understood that the internal combustion engine explodes every rev-,

olution and consequently the valves-will have tobe arranged to provide for firing the engine onevery revolution. 1

It will also be understood that smaller pistons 'anclshorter strokes of the pistons are provided for, thereby, utilizing all the power ofthe explosion. i

Referring to thed-rawings in detail, 5 indi:

cates a straight powershaft which is jour- ,nalled for rotation in any conventional manner in the crankcase'of an external combustion engine, (not shown in the drawings).

A cam-6 of substantially elliptical configuration is provided at its center with an out setsleeve 7through which the shaft 5extends. For rigidly securing the cam 6 to, the shaft, sleeve 7 is provided with a threaded opening 8 in which is threadably supported aset screw 9, the inner end of which is adapteclto be seated in arecess 10 inthe shaft .5

' provided forthat purpose.

The peripheraledge 11 of the cam 6 is of flat. contour to provide an outer track, The

outer track 11 is elliptical in shape, and at the opposite ends, or along the major axis of the ellipse isconsiderably sharpenedas will be be, clearly seen from Figure 1 of thedrawings. One face of the cam 6 is provided with r a recess 12 having an outstanding wall 13 about the perimeter thereof to provide an inner track thereabout. In configuration the inner track 13 is of substantially the same elliptical shape as the outer track 11, but at the opposite ends thereof the walls are curved to a greater radius than the ends of the outer track aswill be clearly understood by referring toFigure 1 of the drawings.

A piston of conventional form for internal combustion engines is indicated at 14 and has v the pin 28;

upon the arms 32.v

invention and consequently-there will be one piston for eachcylinder. r

A pair of

rollers

20, 21 are rotatably mount-H on the

respective pins

22, 23 that are secured to the lower end of the connecting arm 19. The

pins

22, 23 are arranged inspaced vertical position, one above the other, and

the lower roller 21 rides on the inner track 13 of the cam 6, while the upper roller 20 rides on the outer trackll. The

rollers

21 and 20 project laterallyon the arm'19.

On the outer free end-of the roller 20 there is an enlarged annular shoulder-'24 that is adapted to overlap one outer corner-ofthe cam 6. A depending-bracket 25 is secured to a portion of the crankcase 26. Secured to the bracket 25 and extending laterally therefrom, is a cylinder projection 27 that mergesat-its free end in a reduced pin 28.

Circumposed about the projection 27 isa helical coiled spring, 29, one "end of which is secured to the casing26 as at 30, whilethe lat erally proj ecting'end 31'thereof, bears downwardly on the guide arm32.;- A leaf spring 33 has one endsecured to the casing26 as at 34, while the free end 35 bears downwardly The guide arm 32 is for the purpose of cansing the roller 20 to always contact with the outer periphery of the cam'and which coacts with the roller 21's'oas'to provide end thrust at the bottom of the connecting arrn*19.- I The guide arm 32 merges at its inner end with an intermediate portion of the connecting arm 19. Theouter end of the arm 32 is provided with a longitudinal slot36 in which is seated The slot 36 provides for allowing the guide arm :32 to move longitudinally duringthe stroke of the" connecting arm 19. 1

. It is'to'be understoodthat by, describing in detail herein any particular form, structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims, or the requirements of the prior art.

Having thus describedmy invention, what I claim as new is p 1 1. A power shaft connection comprising in combination, a piston adapted to be operably associated with a cylinder of an'internal combustion engine, a straight shaft adapted to be horizontally journalled through. the internal combustion engine, a

cam having an outset track rigidly coupled to the shaft, a connecting arm having one end connected to the piston, a pair ofvertically spaced rollers rotatably coupled to the arm at the lower end thereof, the rollers being engageable with the opposite sides of the track, an angularly disposed guide arm merging at its inner end with an intermediate combustion engine, a'straight' shaft adapted tobehorizontally journaled through the internahcombustion engine, a cam having an outset trackrigidly coupled t'oz-the shaft, a connecting arm having one end connected' t0 the piston, a pair of vertically spaced rollers rotatably ,coupledto the arm.- at; theflower end thereof, the rollers being engageable with the opposite sides of :theytrack, an angularlydisposed guide arm merging atits inner end with an intermediate portion ofthe con necting arm and providedwith a longitudinal slot on'its outer end, a stationary-bracket, apin rigidly securedto-the bracket and mov ably seated in said slot-, automatic .meanfs bearing on said guide armto-take up; playin said-connecting arm, and saidca-m-track be: ing elliptical. r v I l 3. Apower shaft connection comprising in combinatioma piston adapted-to-be operably associated with a cylinder of an internal combustion engine, a straightshaft adapted to be horizontally journalled through the in-' ternal combustion engine, a calm having an outset track rigidly coupled'to theshaft, a connecting arm having one; end connectedto the piston, a pairof vertically spaced rollers rotatably coupled to the arm= at the lower end thereof, therollers being engageable with the opposite; side'sof; the track, an angularly disposed'guide arnrmergingat its inner end with an intermediate portion of; the; connect;

ing arm; andprovidedwith-a longitudinal slot on its outer end, a stationarybracket, a

pinrigidly secured to the bracket and inovably seated v in said slot, automatic means bearing on said guide arm to take-upplay in saidconnecting;arm ,;and said cam-track 1 being elliptical, and said automatic means consisting'of a-coil spring disposedonlthepi'n and a leaf spring on the .bracket, both of which bear on the guide arm. w

4. 'A power shaft connection comprising in combination, a piston adapted to be opera tively associated with a' cylinde'r of an'internal combustion engine, a straight shaft adapted to be horizontally journaled'through the 4 internal-combustion engine, a cam fi'xedto said shaft and having inner and outer tracks thereon, a connecting arm having one end connected to the piston, a pair of vertically spaced rollers rotatably coupled to the arm at the lower end thereof, the rollers being engageable With the inner and outer tracks, an angularly disposed guide arm provided on said connecting arm, and means acting upon said guide arm for maintaining one of said rollers in engagement with the exterior periphery of said c am upon reciprocation of said piston.

In testimony whereof I aflix my signature.

JOSEPH V/MAURAIS.