US2407102A

US2407102A - Internal-combustion engine

Info

Publication number: US2407102A
Application number: US489613A
Authority: US
Inventors: Ryder Elmer
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-06-04
Filing date: 1943-06-04
Publication date: 1946-09-03
Anticipated expiration: 1963-09-03

Description

Sept. 3, 1946. E. RYDER v J 2 INTERNAL-COMBiISTION ENGINE Filed June 4,1943

@@i f i lll T I 20 23 3 INVENTOR.

flne/igyder Patented Sept. 3, 1946 UNITED STATES PATENT OFFICE IN TERNAL-COMBUSTION ENGINE Elmer Ryder, Berwyn, Ill. Application June 4, 1943, Serial No. 489,613

1 The present invention relates to an internal combustion engine or other mechanism including a piston and crankshaft, and especially to a novel means and method of balancing an engine of the single cylinder type for most effectively counteracting or eliminating the vibrations incident to the operation of such an engine.

Among the objects of the present invention is to provide an internal combustion engineof the single cylinder type in which the tortional and other vibrations incident to the reciprocation and operation of the piston and connecting parts is substantially eliminated and thereby assuring optimum efficiency. In the disclosed embodiment the invention comprehends a novel counterbalancing means so constructed and arranged as to insure continuous, smooth operation.

The invention further comprehends a novel construction and assembly of an engine of the single cylinder type whereby its usefulness is greatly enhanced and its manufacture, assembly and repair may be greatly expedited.

Further objects are to provide a construction of maximum simplicity, efficiency, economy and ease of assembly and operation, and such further objects, advantages and capabilities as will later more fully appear and are inherently possessed thereby.

The invention further resides in the construction, combination and arrangement of parts illustrated in the accompanying drawing, and while there is shown therein a preferred embodiment, it is to be understood that the same is susceptible of modification and change, and com prehends other details, arrangements of parts, features and constructions without departing from the spirit of the invention.

In the drawing:

Figure 1 is a view in end elevation of a single cylinder engine constructed in accordance with the present invention.

Figure 2 is a fragmentary view in vertical cross section taken in a plane represented by the line 22 of Figure 3.

Figure 3 is a view in horizontal cross section through the engine and more particularly showing the relationship of the parts.

Figure 4 is a view in vertical cross section through the crank and auxiliary shafts taken in a. plane represented by the line 4-4 of Figure 3, but showing the balancing weights in another position in their cycle of rotation.

Figure 5 is a view similar to Figure 4, but showing still another position of the balancing weights.

Referring more particularly to the illustrative 1 Claim. (Cl. 74604) embodiment disclosed in the drawing; the single cylinder internal combustion engine I is shown as provided with a crank case 2 mounted upon a base 3 and having a cylinder 4 provided with circumferential cooling or radiating. fins 5 exposed to the atmosphere. A piston 6 is adapted to reciprocate within the, cylinder 4 and it in turn reciprocates a connecting rod 1 having its upper end connected to the piston by means of a wrist pin 8, and its lower sleeved end 8 split and encompassing a crank pin l0 carrying at its opposite ends the spaced eccentric weights H and l 2. Each weight is suitably keyed to or secured upon one of aligned sections l3 and IA of a crankshaft, with the end H of the crankshaft journalled within a bearing I5 adapted to be inserted or removed from the exterior of the crank case and provided with a cap or plate l6 adapted to be secured to or mounted upon the exterior by suitable retaining means such as bolts or the like l1. Similarly, the outer end of the shaft I4 is journalled within a removable bearing [5' having a demountable cap or plate l6 for securing the journal within a wall of the crank case 2 by means of bolts or other securing means 11'.

The stub shaft or crank shaft section l3 also carries a gear l8 in continuous mesh with and driving a similar gear [9 keyed to and mounted upon an auxiliary or driven shaft 20. Also eccentrically mounted upon or keyed to this auxiliary or driven shaft is a balance weight 2|, which in the disclosed embodiment is disposed intermediate the eccentrically mounted weights H and I2 on the crank shaft. This counterbalancing weight 2| is rotated in timed relation with and in a direction opposite to that of the spaced, eccentric weights II and I2 and is adapted to counteract these last mentioned weights in the cycle of operation.

The opposite ends of the sections of the auxiliary or driven shaft 20 are journalled in detachable or

removable bearings

22, 22, adapted to be inserted and removed from the exterior of the crank case and with one end of a shaft section extending to the exterior of the crank case and thereat providing a drive shaft for supplying power to a driven member or unit. Any suitable means may be provided for anchoring these bearings or journals in position such as an enlarged head or cap 23 by which these journals maybe secured upon the exterior of the crank case by any suitable means such as bolts or other securing means. By making the bearings l5, l5 and 22 removable, the operating parts within the engine may be quickly assembled by insertion upwardly through the base 3 and the ends of the shaft sections thereafter inserted in the aligned journals or bearings [5, I5 and 22 and the latter then suitably secured in place.

The invention further comprehends providing concentric weights such as

fly wheels

24, 24 on the sections of the crank shaft and a weight or fly wheel 25 on a section of auxiliary shaft keyed to and rotating in opposite directions with their respective shafts. The weight 25 aggregates-that of the

weights

24, 24 and these weights, along with the weights H, I2 and 2|, afiord smooth operation under any and all conditions.

In the operation of the present engine, the;

auxiliary weight 2| counteracts the weights H and I2, and due to the geared connection of'the- Thus when,

vertically upward as in Figure 4 or in a position therefrom, they balance the piston 6. This effectively prevents or counteracts the usual vibrations incident to the operation of a single cylinder engine.

Having thus disclosed my invention, I claim:

In an internal combustion engine comprising a single upright cylinder, a piston reciprocable in said cylinder, and a horizontally disposed crank shaft connected to and. driven by the piston, an eccentriemass secured" to the crank shaft, an auxiliary shaft mounted parallel to and disposed in the same horizontal plane as the crank shaft, gearing between the shafts whereby the auxiliary shaft is rotated oppositely to and at the same angular speed as the crank shaft, and an eccentric masssubstantially equal in effect to the first mass secured to said auxiliary shaft, said masses. being disposed at similar points in their cycle in their upper and lower positions, and in opposition to one another in. their horizontal positions.

ELMER RYDER.