US1083402A - Power-transmission mechanism. - Google Patents

Description

.J. H. HOLLEN.

POWER TRANSMISSION MECHANISM-.- APPLICATION FILED FEB. 2a, 1913.

1,083,402, Patented Jan.6,191

COLUMBIA PLANouRAPl-l c0.,WAsHlNuTON, n. c.

E STS POWER-TRANSMISSION MECHANISM To all whom if may concern:

Be it known that I, JAMES H. HoLLEN, a citizen of the United States, and resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Power-Transmission Mechanism, of which the following is a specification.

This invention relates to power transmission mechanism, and has for its object to provide such mechanism operated by a reciprocating engine, or other unit of power, for converting a reciprocating movement into a rotary motion, the same comprising a pair of oppositely rotatable drums around each of which is wound a driving cord or band with their opposite ends attached to a reciprocating member operated by the engine, said drums being alternately attached to a power transmitting rotatable shaft by a set of ratchets whereby the reciprocating motion of said member causes said shaft to rotate continuously.

A further object of said invention is to provide two sets of oppositely acting ratchets in each drum and longitudinally shiftable clutches adapted to be connected to either set of ratchets whereby the direction of rotation of said shaft may be reversed.

A further object of the invention is to provide a crank on the main shaft having connecting rods between it and the reciprocating frame whereby said frame is required to take its full predetermined stroke before a reverse action is permitted.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the ap ended claims.

f the accompanying drawings: Figure 1 is a plan view, partly in section, illustrating the reciprocating member as connected through cords or bands to drums mounted on the shaft for rotating said shaft, also showing a crank on the shaft having a connecting rod from the crank to the reciprocating member. Fig. 2- is a side elevation partly in section, illustrating the connection from the crank to the reciprocating member. Fig. 3 is an enlarged longitudinal sectional elevation showing the drums and the ratchet connection to the shaft. Fig. 4: is a side elevation partly in Specification of Letters Patent.

Application filed February 28, 1913.

Patented Jan. 6,1914. Serial No. 751,217.

section of the drums with their ratchet mechanism connected to the shaft.

Referring to th drawings, 10' designates the base on one end of which is mounted a cylinder 11 in which a reciprocatory piston 12 is mounted, the piston is connected by means of a piston rod 13 to a longitudinally slidable frame 14 mounted in ways or guides 15. Passing transversely through this frame is the main shaft 16 on which is mounted a pair of drums l7 and 18, which drums are connected alternately to the shaft to rotate the same through sets of ratchet mechanism presently described. In Fig. 3, 16 designates the shaft on which a clutch sleeve 19 is mounted to slide longitudinally on the feather key 24 through the movement of the actuating lever 20 pivoted at 21 with pins 22 in its fork and the same engaging the groove 23 in said sleeve. 25 and 26 designate right and left hand toothed ratchet wheels respectively and which are engaged by pawls 27 and 28, re spectively, and the drum 17 is provided with a central web 29 which receives its bearing on the body of the ratchet wheels. Drum 18 is a duplicate of drum 17, 30 and 31 designating the right and left hand ratchet wheels respectively. The clutch sleeve 19 is provided with beveled faces 32, 33 and 34, whereby when it is moved to its outward position the face 34 engages the right and left hand toothed ratchet wheel 26 and 30 (which in this construction are shown in one block), of both drums 17 and 18 and when pressed inward the faces 32 and 33 engage the opposite right and left hand ratchet wheels, whereby the reciproeating action of the frame will rotate the shaft in the opposite direction. Bearings 3 1 and 35 are arranged on opposite sides of the ratchet members to prevent longitudinal movement of the same when the clutches are forced into engagement therewith. In order to operatively connect the reciprocating frame let to these drumsa' cord, or, band of any suitable material, is wound around each drum in opposite direc tions with its opposite ends connected to opposite ends of the frame 1i whereby a reciprocating action of said frame rotates each drum in opposite directions, to act alternately through their respective ratchet mechanism to rotate the shaft continuously in the same direction. When it is desired to reverse the direction of rotation of theshaft the clutches are moved out of engagement with one set and into engagement with the opposite set of ratchet mechanism. In order to control the reciprocating movement of the frame so as to compel the same to move;

the full extent of a predetermined stroke before the direction can "be reversed I have provided an offset or crank portion 36 in the main shaft l6antl=have-connected this crank through connecting rods 37'38 to opposite ends :of the frame 14., said connecting rods each having a pivoted link 39-and 4:0 interposed between its end and said frame to compensate for the longitudinal travel of drum through which theyare connected to said shaft, a reciprocating member and a band around each drum and attached to said member whereby a movement of said member ineither direction causes said shaft to rotate in thesame direction, a crank on said shaft and oneor more members con necting said crank to said reciprocating member whereby a stroke in one direction must be completed before it can bereversed.

2. A power transmission mechanism comprising a shaft, a pair of intermittently oppositely rotatable drums voperatively mounted on said shaft, ratchet mechanism'in each drum adapted to connect them tosaid shaft, a reciprocating member, aban'd around each drum and attached to said member wherebya movement of the latter in either direction causes said'shaft to rotate in the-same-direction, a crankzon said shaft'and means connecting said crank to said member whereby a stroke in one direction must be completed before it can be reversed, and the velocity of movement is permitted to be uniform throughout the stroke, said connecting means including a pivoted auxiliary link whereby a free movement of said member eating member, a band around each drum and attached 'to said member whereby a imovenient of the latter in either directioncauses said shaft to rotate in the same -direction, a crank on said shaft and means connecting said cran-kto saidmember whereby a stroke in one direction must be completed before it can be reversed, and longitudinally shiftable clutches adapted to engage either one of said opposite sets of ratchet mechanisms in said drums whereby the direction of rotation of said shaft may be reversed.

4. Apower transmission mechanism comprising a shaft, a pair of intermittentlyoppositely rotatable drums operatively mounted'on said shaft, ratchetvmechanism in each drum adapted to connectthem to said shaft, a reciprocatingmember, aband around each drum and attached to said member whereby a movement of-said member in either direction causes said shaft to rotate in the same direction, a crank on saidshaft and means connecting said crank to SilldlllGIIlbQI where by a stroke in one direction must be completed before it can be reversed,-said connecting-means including a pivoted auxiliary link whereby a free movement of-said member-due to drum drive is permitted irrespective of the harmonic motion of said crank due to the angular positions of the latter, and longitudinally shiftable clutches adapted to engage either oneof said opposite sets of ratchets in said drums whereby the direction of rotation of said shaft may be reversed.

In testimony whereof I afiix my signature in presence oftwo witnesses.

JAMES H. HOLLEN.

Witnesses HOWARD E. BAnnow, E. I. OGDEN.

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

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