US1225605A - Internal-combustion engine. - Google Patents

Description

G. FLOYD.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED NOV. 25. I9I5.

Patented May 8, 1917.

2 SHEETS-SHEET l G. FLOYD.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED NOV. 26. I915.

Patented May 8, 1917.

2 SHEETS-SHEET 2 GEORGE FLOYD, OF PORTSMOUTH, OHIO.

INTERNAL-COMBUSTION ENGINE.

Application filed November 26, 1915.

To (/71 whom it may concern:

Be it known that I, Gnonon FLOYD, a citizen of the United States, residing at Portsmouth, in the county of Scioto and State of )hio, have invented certain new and useful improvements in Internal-Combustion Engines; and i do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a-ppertains to make and use the same.

This iiwention relates to internal combustion engines, and has for its primary object to provide an improved and simplified engine embodying tw opposed oflinders of the two cycle type, which are so timed as to perform their cycles alternately and thus impart a power impulse to the crank shaft at each half rotation thereof.

Another object is the provision of an engine of this character embodying two sets of valve operating cams and means for manually adjusting the cams whereby the direction of rotation of the crank shaft of the engine may be reversed when desired.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts as will be hereinafter specifically described, claimed and illustrated in the drawings, in which:

Figure 1 represents a plan view of the improved engine partly broken away,

Fig. 2 represents a side elevation thereof,

Fig. 3 represents a transverse sectional view through the main cross head on the line 33 of Fig. 1.

Fig. 4; represents afra view on the line llof Fi Fig. 5 represents a fragmentary perspective view of one of the valve operating bell cranks detached.

Referring to the drawings in detail, wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 5 indicates a suitable base upon which is mounted a pair of axially alined and spaced cylinders 6. A pair of upstanding bearings 7 are supported upon one end of the base 7 and rotatably support a crank shaft 8. The cylinders 6 are connected by horizontally disposed guides 9 arranged in pairs and slidably sup porting a main cross head 10, slidably mounted between the cylinders 6 and having an internally screw threaded aperture formed centrally receiving the adjacent gmental sectional Specification of Letters Eatent.

Patented May 3, 1917.

Serial No. 63,573.

screw threaded ends of the piston rods 11 carried by the pistons 12 reciprocably mounted in the cylinders, whereby the position of the pistons relative to the cross head may be varied as desired and thus increase or decrease the size of the piston chamber within the cylinders. The piston rods 11 are secured in adjusted. position with relation to the cross head 10 by lock nuts 13 fitted upon the pistons and engaged with the cross head.

The ends of the guides 9 are extended longitudinally and are directed inwardly and connected with the bearings 7, as indi cated'at 141-. A second cross head 15 is slidably mounted between the guides 9 intermediate the innermost cylinder 6 and the crank shaft 8 and is connected y a pair of spaced parallel connecting rods 16 with the main cross head 10 located be"ween cylinders. The cross head 15 is formed with a pair of spaced parallel cars 17 receiving a wrist pin 18, whereby one end of a connecting rod 19 is secured thereto and the oppo site end of said connecting rod is formed with a bearing 20 receiving the crank pin 21 of the crank shaft 8.

One end of the main cross head 10 is extended laterally of the adjacent guides 9, as indicated at 22, and is connected with the piston rod 23 of a compressor or pump 24. The cylinder of the pump 24 is provided with the usual air intake pipe 25 and the air outlet pipe 26, which latter is connected with the air storage tank or reservoir 27. A pair of air supply pipes 28 is connected with the tank 27 and are designed to conduct air to carburetors (not shown) provided for carbureting the liquid fuel fed to the cylinders of the engine.

Each of the cylinders 6 is provided with the usual spring exhaust and inlet valves 29 and 30, respectively, adapted to be mechanically operated by bell cranks 31 and 32, respectively, pivot-ally secured at 33 in a suitable support 3% carried by the head of the cylinder. lhe outer arms of the bell cranks or levers 31 and 32 are formed with laterally projecting lugs 35 having inclined faces 36 adapted to permit free sliding movement of the adjustable cams, to be hereinafter described. lhe free ends of the bell cranks are also bifurcated to receive rollers 37 rotatably secured thereto and adapted to engage the operating cams to reduce friction to a minimum.

The cam shaft 38 i supported in suitable bearings ar anged below one of the pair of guides 9 and is provided at one end with a gear 39 engaged with a gear 4O carried by the crank shaft 8, whereby rotary motion is transmitted from the cam shaft to the crank shaft during operation of the engine.

A sleeve 40 is slidably and non-rotatably secured upon the cam shaft 38 adjacent each pair of valve operating cranks 31 and 32 and is provided with two oppositely arranged pairs of cams 41. One pair of the cams 41 is designed to operate the valve operating bell cranks 31 and 32 when the engine is running in one direction, while the other pair of cams is adapted to be moved into position to engage the outer ends of the bell cranks to operate the latter when the engine is running in the opposite direction. A shifting lever 43 is pivotally secured at 44 to a bracket 45 carried by the base 5 adjacent each sleeve 40 and is bifurcated at its inner end for engagement between a pair of integral flanges formed upon the sleeve 40, whereby the inner end of the lever 43 is secured against longitudinal movement upon the sleeve. A hand lever 46 is pivotally secured at 47 at a point intermediate the cylinders G and is connected by links 48 with the outer free ends of the levers 43. A suitable loeking mechanism 49 is provided for automatically locking the hand lever 40 in adjusted position. As clearly illustrated in Fig. 2, the links 48 are connected with the lever 46 upon opposite sides of the pivotal aXis 47 thereof so that when the lever is moved in one direction the two sleeve-s 40 are simultaneously moved inwardly through the links and levers 48 and 43, respectively, whereas when the hand lever 46 is moved in the opposite direction the sleeves 40 are moved apart.

During the operation of the engine the rotary motion of the crank shaft 8 is imparted to the crank shaft 38 through the gear 40 and worm 39, thus imparting rotary motion to the cams 41. It will be understood that the two sets or pairs of cams upon each sleeve 40 are so arranged as to rock the bell cranks 31 and 32 and open the valves 29 and 30 associated therewith at the proper instant. When it is desired to reverse the direction of rotation of the crank shaft 8 of the engine the sleeves 40 are adjusted longitudinally of the cam shaft 38 by shifting the hand lever 46 and thus moving the other set or pair of cams 41 into proper position with relation to the outer ends of the bell cranks 31 and 32. v

What I claim is:

1. In an internal combustion engine, a base, a pair of opposed cylinders supported upon said base, pairs of guides connecting said cylinders and projecting forwardly thereof, a pair of bearings supported upon the forward end of said base and connected with the forward extremities of said guides, a crank shaft rotatably supported in said bearings, a pair of spaced cross heads supported in said guides, adjustable rigid con nections between said cross heads, a connecting rod connecting the forward cross head with said crank shaft, pistons reciprocably mounted in said cylinders, piston rods carried by said pistons fitted in one of said cross heads and adjustable with relation to each other and with relation to the cross head, and means for locking said piston rods in adjusted position with relation to said cross head.

2. In an internal combustion engine, a cylinder, a crank shaft, a piston reciprocably mounted in said cylinder, connections be tween said piston and said crank shaft, a cam shaft connected with said crank shaft, valves mounted in the heads of said cyliin ders, bell cranks associated with said valves, a pair of spaced sleeves slidably and nonrotatably secured upon said cam shaft, pairs of cams formed upon each sleeve and adapt ed to be moved into operative position with relation to said bell cranks, laterally pro j eeting lugs formed on the opposite sides of the cam-engaging ends of the bell cranks having inclined faces adapted to permit free sliding movement of said cams, and means for simultaneously adjusting said sleeves.

In testimony whereof I ailiX my signature in presence of two witnesses.

WVM. BARNETSON, Finn) IV. Scnnnrnnn.

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

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