US1179054A

US1179054A - Internal-combustion engine.

Info

Publication number: US1179054A
Application number: US54454610A
Authority: US
Inventors: Willard I Twombly
Original assignee: TWOMBLY MOTORS Co
Current assignee: TWOMBLY MOTORS Co
Priority date: 1910-02-18
Filing date: 1910-02-18
Publication date: 1916-04-11
Anticipated expiration: 1933-04-11

Description

w. i. TWOMBLY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED FEB. 18.1910.

1,179,054. Patented Apr. 11,1916.

WILLARD I. TWOMBLY, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO TWOMBLY MOTORS COMPANY. OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Apr. 11, 1916.

Application filed February 18, 1910. Serial No. 544,546.

To all whom it may concern:

Be it known that I, \VILLAKD 1. TWOMBLY, a citizen of the United States, residing in New York, county of New York,and State of New York, have invented new and useful Improvements in Internal-Combustion Engines, of which the following is a description.

This invention relates to internal combustion engines of the opposed cylinder type with a piston operating therein connected to a crank shaft extending transversely through the piston and cylinder, and it is the object of the invention to improve the construction of this type of engines in general and so arrange the parts as to be readily accessible for substitution or otherwise, and to provide an engine wherein a portion of one cylinder will also constitute an operating or working portion for the piston of its opposed cylinder.

In the drawings accompanying and forming a part of this specification the figure is a sectional end elevation, showing an vembodiment of my invention.

The embodiment of my invention shown in the drawings consists of a box-like frame orv crank case 1 having opposed apertures 2. Fixed to said frame in alinement with the apertures are cylinders 4 with bores 11 of opposed cylinders in alinement, each cylinder having a sleeve portion 3 to engage in an opening 2 and the sleeve of one cylinder having an overlapping and mating connection with the sleeve portion of an opposed cylinder within said frame 1. The sleeve portions of the cylinders also have recesses which cooperate with corresponding recesses in an opposed cylinder sleeve to constituteopenings 78 for a. purpose to be hereinafter described, and recesses at right angles to the recesses 78 to form openings for the passage of the crank shaft 40. The cylinders have flanges to abut against the frame 1 and are fixed to the latterby bolts passing through said flanges screw threaded into the frame.

In the hottonrof the frame 1 is a Water inlet 7 from which branch out ducts 8 having outlets in the sides of the frame, and with which outlets ports to water spaces 6 around the cylinders formed by a wall or jacket 5 cast integral with the cylinders are adapted to register. The cylinder castings also have valve chests in an integral lateral inders have a water-tight connection with v the frame 1, as indicated at 9. It will thus beobvious that water entering at 7 is led through the jackets of the respective cylinders, around thevalve chests and then out through pipes 10. The bores of the cyla5 inders communicate with valve chambers 17 containing valves, as shown at 18, the said valves being inserted through openings closed by plugs 20, and controlling the fuel intake and exhaust through chambers 21 and

pipes

22 and 24 respectively. The valves are of the puppet type having stems slidably mounted in plugs 65 screw threaded into the valve casing, and the valves normally seated by springs 28 coiled about the plugs 65 and confined between said plugs and washers 72 placed on the ends ofthe valve stems and retained thereon by pins. The valves are operated by cams, as shown at 29 and 31, fixed to cam shafts 33 and 3 through cam following plungers 71 engaging with the valve stem-s,..said plungers being slidably mounted in bushings 70 screwed 'into the sides of the frame 1. The cam shafts are journaled in bushings 35 carried by the frame 1, and are, driventhrough gears fixed to the respective shafts from a gear meshing with a gear fixed to the crank shaft.- The gearing is so timed that-the cam shafts will make one revolution to two revolutions of the crank shaft. The valve springs 28 are normally covered by tubes 67 one end of which tubes is supported by the plugs 70 andthe other end. being supported and slidably engaging in recesses in the valve carrying plugs 65. It will be obvious that in removing the valves it is only necessary to slip the tubes into the jrcessesfof the plugs when the pins and washers 72 may be readily removed and the valves passed through the openings normally closed by the caps 20-.

, Pistons 12 having the usual packing rings 13 and oil grooves 14 operate in the cylinders and consist of mated sections, that is the sleeve portion of one piston has an overlapped connection with the sleeve portion of the piston ofan opposed cylinder. Said sleeve portions have recesses in the ends and when connectedv overlapped relation form Each piston head has a .recessed portion 15 to form with the end of the cylinder a combustion or explosion chamber when the piston is at the extremity of its outward stroke, as clearly shown at the left of the figure. Each piston section has a steel track adapted to form what may be termed a Scotch yoke.

The tracks 55 are connected to the piston sections by rods 56 having screw threaded connection with the tracks at one end and the other ends having screw threaded connection with the piston heads and secured in place by nuts, dowel pins preventing lateral or rotative movement of the tracks. The piston sections are secured together and held in proper relation by right and left end threaded screw rods 58 having screw threaded connection at their ends with bosses or arms 59 and held inadjustment by jamb nuts 60. o

The pistons are connected to the crank pins, as shown at 45, of the cranks of the crank shaft by steel rings 52 mounted upon the crank pins by ball or roller bearings 51 contained in said rings, and in operation'as combustion takesplace in a cylinder and the piston isreciprocated the rings will have a rolling and reciprocating movement between the tracks 55. It will be obvious that as the piston is reciprocated the orbit of the movement of rings on the crank pins will be greater than the diameter of' the pistons and cylinders, and that a portion of the rings will pass through the openings 77 and 78 in the pistons and cylinders, and that a portion of the sleeve of one cylinder will serve as a working portion for the piston of an opposed cylinder, as clearly shown in the figure.

From the foregoing it will be obvious that Ihav'e produced an engine provided with cylinders in alinement with each other and having alined. pistons operating in an opposed manner therein, and which pistons are provided with means cooperating with means on the crank pins in such manner as to remove the necessity of the ordinary connecting rods, thus producing a very compact and simple engine in which the Qopiea of this patent may be ebtained for parts are readily accessible. It will also be obvious that the frame or box upon which the parts are mounted and the construction of the cylinders and valve chests is such that by simply mounting the cylinders upon the frame it will serve to make the water connections to the water jackets.

Having thus described my invention that which I consider as novel and desire to protect by Letters Patent is as set forth in the following claims:

1. In an internal combustion engine, the combination comprising a substantially rectangular crank case having oppositely disposed openings in the side walls; a pair of cylinders of the same diameter throughout fixed to said case, said cylinders having a portion projectingcthrough an opening in the crank case and having a mating connection within the case so that the bore of one cylinder will be in alineinent with the bore of the other cylinder; a duplex piston operatively engaging in the cylinders; a crank shaft journaled in the case and passing transversely through the pistons and cylinders; and means to operatively connect the piston to the crank of the shaft within the working portions of the cylinders.

2. In an internal combustion engine, the combination comprising a substantially rectangular crank case having oppositely disposed openings in the side Walls; a water inlet in the bottom of the case having ducts branching out therefrom withoutlets in the sides of the case; a pair of cylinders of the same diameter throughout having a portion to engage in the case openings and having a mating connection within the case, the heads of said cylinders having laterally projecting portions provided with an ignition chamber communicating with the bore of the cylinder and fuel and exhaust chambers.

having valved ports communicating with the ignition chamber; an integral water jacket extending around the cylinders and fuel and exhaust chambers having an inlet which is adapted to register with an outlet of a water duct in the crank case when the cylinder is secured to the case and an outlet adjacent the fuel and exhaust chambers.

. WILLARD I. TWOMBLY. Witnesses:

M. HERSKOVITZ, M. E. HILLOGK.

five cents each, by addressing the "Commissioner of Pater ts,

Washington, D. G.