US1108844A - Mechanical movement. - Google Patents

Description

H. P. JACOBS.

MECHANICAL MOVEMENT. APPLICATION FILED novflze. 1909.

2 SHEETS-SHEET 1.

THE NORRIS P ETERS CO" PHOTOLITHO" WASHINGTON, D. C.

H. F. JACOBS.

MECHANICAL movzmnu'r.

APPLICATION FILED NOV. 26, 1909.

1 ,108,844. Patented Aug. 25, 19m

2 SHEETS-SHEET 2.

THE NORRIS PETERS CO., PHOTO-LITHO.. WASHINGTON. D. Cv

HERMAN reasons, or INATICK, irnssaonusnrrs.

MECHANICAL MOVEMENT;

Specification of Letters Patent.

Patented Aug. 25, 1914.

Application filed November as, race. Serial no. 529,886.

To all whom it may concern:

Be. it known that T, lliiERMAN F. Ja oons, of Natick, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Me chanical Movements, of which the following is a pecification.

Thi invention relates to mechanical movements, and is illustrated herein as embodied, in an engine operated expansive fluid of the reciprocating type and relates particularly to. new and improved means for converting the reciprocations of the engine piston or other-movingelement into rotary movement of the shaft to which the power is applied.

In carrying the invention into effect 1 provlde means by which the rectilinear move ments of the piston are converted directly into rotary movement of a shaft without the interposition of a crank and pitman and with the development of more 'efi'ective power than is possible with the ordinary crank and connecting rod, while also obtaining a more uniform distribution of power throughout the entire revolution of the shaft and a more uniform acceleration and retardation of the speed of the piston.

In developing the principles of my invention in practical form I have devised an er.- gine of which one embodiment isshown in the accompanying drawings, such embodii ment not being the only one possible but being merely illustrative of one way in which the invention may be carried into effect.

In the drawings Figure 1 represents a side elevation of such an engine. Fig. 2 is a plan. view of the same. 3 is a longitudinal section of the same. Fig. 4c is an end elevation as viewed from the cylinder end of the engine. Fig. 5 is an elevation of the opposite end of the engine to that shown in Fig. l. Fig. 6 is a cross section. Figs. 7 and 8 are diagrammatic views illustrating different positions of the stroke of the engine.

The same reference characters indicate the same parts in all the figures.

The engine comprises a base 1 on one end of which is supported a cylinder 2, in which reciprocates the piston acted upon by the steam or other expansive fluid, and from whichprojects the piston rod 3 through a stuffing box 1. On the base are supported by steam, air or otherranged centrally, of thrust of the piston, and the latter are ar-,,

cross head guides 5 and 6 between which is guided a cross-head frame 7 connected to the piston rod 1 by akey or other suitableconnection 8. The frame 7 is moved back and forth with the reciprocationsof'the piston in the cylinder 2. Extending transversely of the base 1 an supported by bearing brackets 9, 10 on opposite sides thereof is main shaft 11, which also traverse the crossihead guide 7 between the opposite ends thereof. T1118 shaft carries members 12, 13,

which for convenience may be termed levers The cross-head frame or impulse members. 7 carries a number of cross-head elements 14, 15 respectively, of which the former is arthat is, in the socket line ranged in the same plane therewith, but

equidistantly on opposite sides of said line.v These cross-head members carry anti-friction rolls 16 and 17 respectively.

'The impulse member or lever 12 is arranged centrally of the engine in line with the roll; '16 as shown in Fig. 2, while the members 13 are on different sides of the center line and in alinement with the rolls 17 respectively. By this arrangement the roll I 16 acts on thelever 12 in one stroke of the engine andthe roll 17 acts on the lever 13 on the return stroke. The levers or impulse members are elongated in one direction having approximately the'form of an ellipse as shown in Figs. 1, 3, 7 and 8, and the relative arrangement of the levers 12 and 13 is such that the major axis of the former is ap proximately at right angles to those of the latter, the axes of the two member 13 being in the same plane. Thus in the outward stroke of the piston one end of the member 1 is acted upon and the shaft turns through nearly a quarter revolution, the momentum thus carrying the levers 13 past the dead point so that they may be acted upon in the proper direction by the rolls 1? on the return stroke of the piston to continue the rotation of the shaft in the same direction. The levers are two-armed so that first one end and then the other of each is acted upon by its corresponding impulse roll, the other lever or levers being acted upon intermittently by the other roll or rolls. The momentum may be alternated by a fly wheel. 18 011 the shaft.

A valve gear of any improved form may by side and arrangement of levers on the same shaft.

It is obvious that an engine constructed a and illustrated as above is double-acting. Two or more cylinders may be mounted slde arranged to act'upon a similar are employed the lebe arranged at JVhere two cylinders vers acted upon by one may an angle of 45 verse of the other, and thus applied to the shaft for each 45? of revolution thereof. Even with a single. cylinder the number of impulses applied to the shaft during" its rotation is doubled over that of the ordinary type using a crank and con-- necting rod for with the arrangementas shown four impulses are applied during each rotation of the shaft and thus the same uniform turning movement is applied thereto. Furthermore by properly shaping eratlon and retardation, thereby overcomingp1s-' the sides of the levers or lmpulse' members,

the motion of the piston must be made more regular than with that of the ordinary engine and be caused to have a perfect accelthe defects due to the angularity ofthe ton rod in the ordinary type of engine. By

the arrangement of the two cross-head mem bers 15', 17 equally distant on each side fromp the center line of the engine the pressure Copies 0! this patent may he obtained for is equalized on the shaft and there is no tendency for the shaft to bemoved outof ahnement and to bind in its bearings.

reciprocating cross-head frame, means reciprocatlng saidcross-head frame, a trans- 5 said shaft in the cured to said each side of such line of thrust, and antl-o with the corresponding reimpulseswill be tively,

I claim, '1. A. mechanical movementcomprising a verse shaft between the ends of said cross- .hea-c1rframe-,,a pair of diametrically oppofor a site arms projecting perpendicularly from I line of thrust of said crosshead reciprocating means, two pairs ofarms quartering with said first pair of' arms seshaft, at equal distances on friction means carrled'by' said cross-head frame arranged to bear on said arms oppositely during opposite reciprocations of the cross-head.- I

2. A mechanical movement comprising a reciprocating cross-head frame, guides for said frame, ashaftjcrossing the frame perpendicular to the direction of movement thereof, a pair of oppositelyprojecting arms on the shaft in the line of thrust applied by the frame, an engaging element on the frame in the same line arranged to bear on the sides of the arms on successive strokes two pairs of oppositely in one direction, projecting arms at right angles to the firstnamed pair fixed to the shaft at equal distances on each side of the line of thrust, and

engaging elements carried by the frames in line with said two pairs of arms respecfrom the firstsnamed engaging member.

ln testimony whereof I have affixed my signature, 1n presence of two witnesses.

HERB IAN F. JACOBS.

Witnesses:

ARTHUR H. BROWN,- JASpH. CH RGHILL.

I five cents each, by addressing the Commissioner of Patents, Washington, D. C. v a

and on the opposite side of the shaft

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