US1128325A

US1128325A - Intermittent-grip device.

Info

Publication number: US1128325A
Application number: US71897512A
Authority: US
Inventors: George E Judd
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-09-06
Filing date: 1912-09-06
Publication date: 1915-02-16
Anticipated expiration: 1932-02-16

Description

G; B. JUDD.

INTERMITTENT GRIP DEVICE.

APPLICATION FILED SEPT; 6. 1912.

Patented Feb. 16, 1915.

wi/tmeooao "HE NORRIS PETERS CO.. PHOTO-LITHQ. WASHINGTON. D C.

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INTERMITTENT-GRIP DEVICE.

Specification of Letters Patent.

Patented Feb. 16, 1915.

Application filed September 6, 1812. Serial No. 718,975.

To all whom it may concern Be it known that I, GEORGE E. JUDD, a citizen of the United States of America, residing at Glendale, in the county of Los Ange les and State of California, have invented new and useful Improvements in Intermittent-Grip Devices, of which the following is a specification.

This invention relates to improvements in intermittent grip devices and is thus embodied in an intermittent grip device wherein motion is transmitted from the piston to the driving shaft without the use of a crank.

In carrying out the present invention, it is my purpose to provide an intermittent grip device wherein-motion may be taken from both sides of the piston and imparted to a shaft to rotate the latter continuously and in one direction in the reciprocatory movement of the piston.

A further object of my invention is to provide an exceedingly simple, inexpensive and highly efficient intermittent grip device so that it may be serviceable in many situations and which consists of cables adapted to be operatively connected to the members to be reciprocated in a manner to provide for an even balance in the cables which are adapted to extend in opposite directions.

. WVith the above and other objects in view, the invention consists in the construction, combination and arrangement of parts hereinafter set forth in and falling within the scope of the claim.

In the accompanying drawings; Figure 1 is a side elevation of an engine constructed in accordance with the present invention, the engine cylinders being shown in section. Fig. 2 is a top plan view of the same. Fig. 3 is a longitudinal sectional view on the line 33 of Fig. 1. Fig. l is a detail view of one of the disks and the clutching means.

In the practice of my invention, the pressure of the motive agent on the piston is converted directly from reciprocatory into rotary movement without the use of the crank and other necessary appliances incident to the crank, thus entirely eliminating the use of a fly wheel to overcome the dead center common in engines of this type. The energy of the motive agent is transmitted directly to a disk on the power shaft and is imparted to such disk by a pulling action instead of a push and pull as when the crank is used. This makes it possible to utilize a relatively long cylinder of comparatively small bore, and a light cable, chain or the like, to convert reciprocatory motion of the engine piston into a rotary motion of the driving shaft, and as the cables are relatively lighter in weight than pitmen, piston rods and cranks and other necessaryappliances incident thereto, of a corresponding sweep or radius, there is therefore relatively less energy wasted in changing the direction of travel of the piston in its reciprocatory movement, than is expended in the use of crank shaft engines, particularly when a relatively long cylinder is employed in such an engine. 7 v

In carrying my invention into practice, any suitable or preferred form of motive agent or fluid may be employed to impart movement to the piston, such, for instance, as steam, compressed air, water, and the like. Therefore, it is to be understood that invention is not limited to the utilization of any particular form of motive fluid.

Referring now to the accompanying,

drawings in detail, 1 designates the engine cylinder which, as shown, is preferably elongated and of relatively small bore, and mounted for reciprocation within the cyl inder 1 is a piston v2 through which is passed a piston rod 3 extending outwardly from both sides of the piston and beyond the cylinder, the ends of the cylinder being closed by means of stuffing boxes 4:, 4 through which the extremities of the piston rod are passed. Leading into each end of the cylinder 1 is a fluid conducting pipe 5 terminating in a common main 6, while to each end of the cylinder at a point diametrically opposite the respective inlet conduit, is an exhaust conduit 7. Intersecting the inlet and exhaust conduits and suitably fastened thereto are valve casings 8 each housing a valve provided with a manipulating lever 9, a connecting rod 10 connecting the inlet valve lever at each end of the cylinder with the exhaust valve lever at the respective end. The inlet and exhaust valves at each end of the cylinder open and close alternately, that is to say, when the inlet valve at one end of the cylinder is open, the exhaust valve is closed and the inlet valve at the other end of the cylinder closed while the exhaust valve is open, so that the fluid acting upon one side of the piston mayforce such piston toward the remote end of the cylinder and drive the spent motive agent out of such end 7 of the cylinder by way of the open conduit.

fss

One set of the valve levers, for instance,

'the inlet valve levers are apertured and through the apertures is passed a rod, wire or the like 11 provided upon opposite sides of each lever with

knobs

12, 12 spaced appropriate distances apart upon the wire and designed to abut the respective valve levers to open and close the same, the knobs being positioned or arranged upon the wire or rod to open one valve and close the other and vice versa, movement being imparted to the exhaust valves simultaneously with the inlet valves to effect the proper operation of the exhaust valves in accordance with the positions of the inlet valves, as will be readily understood. Each end of the wire or rod 11 is fastened in any suitable manner to one extremity of an arm 13 carried by each end of the piston rod 3 so that in the movement of the piston, the valves will be manipulated to effect the admission and exhaust of the motive fluid to and from the cylinders respectively, according to the position of the piston therein.

Journaled in suitable bearings adjacent each end of the cylinder 1 is a sheave wheel 14 having its center disposed an appropriate distance below the line of draft of the engine piston so that the periphery of the Wheel will be located in alinement with the center of the piston, and consequently the piston rod 3 whereby the power transmitted or taken from the engine piston will be in a straight line. Located to one side of the engine cylinder 1 and approximately centrally of the sheave wheels 14, 1th is a power shaft 15 upon which are mounted a pair of peripherally grooved

disks

16, 17. These disks upon the power shaft are adapted to be clutched to the shaft and unclutched therefrom alternately and when operatively connected to the shaft to impart movement to the same so that such shaft will rotate continuously and in one direction in the reciprocatory movement of the piston within the cylinder. Each disk, 16, 17 is in the present instance equipped. with a ball or roller clutch in the form of balls or rollers 18 located in pockets or recesses 19 formed in the hub of the respective disk and arranged about the circumference of the power shaft and designed to place the respective disk in engagement with the power shaft when such disk is rotated in one direction and unclutch the disk from the shaft when the same is rotated in the opposite direction, so that the respective disk may idle upon the shaft when the piston is traveling in one direction in its path of movement, the disks operating as above, alternately, as previously set forth so that when the piston moves in one direction in its path of movement, one of the disks will be placed in driving engagement with the shaft, and when such piston changes its course of travel, the first disk will be unclutched from the shaft and the other disk placed in driving engagement therewith to continuously rotate the shaft in one direction.

As these ball clutches are well known and as the applicants invention is not limited to any particular type of clutch or means for placing the disk into and out of driving engagement with the shaft, it is thought that a detail description of the clutches is unnecessary.

Connected in any suitable manner to each end of the piston rod 3 is a cross bar 20 and to the free extremities of each cross bar is connected the adjacent extremities of flexible elements, such as ropes or

cables

21 and 22. The cable 21 istrained over the guide sheaves 14 and is wrapped or reeved about the disk 16, going onto and coming off of such disk at a point tangentially thereof. The rope or cable 22 is also trained over the guide sheaves 14, the latter being preferably formed with a double groove to accommodate the cables, and is wrapped or reeved about the disk 17 at a point tangentially thereto and opposite from the rope 21. Thus, the piston in its path of movement in one direction exerts a pull on one of the cables with the efiect to clutch the respective disk to the shaft and rotate the shaft, the other disk, owing to the reverse connections of the other cable, revolving in the reverse direction and idling upon the shaft. When the piston changes its course of travel, the other cable acts upon the respective disk to clutch the same to the shaft and imparts movement to the shaft in the same direction as the previous disk, while the first disk idles upon the shaft in the reverse direction.

From the foregoing description taken in connection with the accompanying drawings, the construction of my engine will be readily apparent to those skilled in the art, and while I have herein shown and described one particular embodiment of my invention by way of illustration, it is to be understood that I do not confine myself to the precise details of construction herein described and delineated, as modification and variation may be made within the scope of the claim and Without departing from the spirit of the invention or exceeding the scope of the claim.

I claim:

In combination with an elongated rod, a cross-piece secured at each end of the rod, means for reciprocating said rod, two sheaves mounted opposite each end of said rod toward which said rod is arranged to move, two sheaves mounted intermediate said first-named sheaves laterally of said rod, two cables, one of said cables secured to one end of one crose-piece, passing around one of said first-named sheaves, tangentially over one of said last-named sheaves, around one of said first-named sheaves at the opposite end of said rod and being attached to one end of the other cross-piece, the second cable being attached to the opposite end of the first cross-piece, passing around the other of said first-named sheaves, adjacent thereto engaging tangentially the other of said intermediate sheaves at a point diametrically opposite with respect to the point of tangential engagement made by said other cable over said first intermediate sheave, said second cable passing around the remaining sheave and being attached to the opposite end of said other cross-piece, a

power shaft upon which said intermediate 15 In testimony whereof I aflix my signature 20 in presence of two witnesses.

GEORGE E. JUDD.

Witnesses:

H. M. MILLER, ROY F. BANCROFT.

Gopies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. G.