US1116810A - Mechanism for converting reciprocating into rotary motion. - Google Patents

Description

R. z. PARMER. MECHANISM FOR CONVERTING REGIPROGATING INTO ROTARY MOTION.

APPLICATION FILED NOV. 26. 1913.

Patented Nov. 10, 1914.

2 SHEETS-SHEET 1.

wumto a ROBERT Z. FHRMER.

THE NORRIS PETERS CO. PHOTU-LITHQ, WASHINGTON, D- C.

R. z. PARMER. MECHANISM FOR CONVERTING REGIBROOATING INTO ROTARY MOTION.

APPLICATION FILED NOV. 26, 1913. I

1,1 16,810, Patented N0v.10,191 L 2 SHEETS-SHEET 2.

m neuter RQBERTZ- Fa RM ER,

THE NORRIS PETERS CO, PHUTO-LITHQ. WQISHINGI'ON, D. C

ROBERT Z. FARMER, OF BISBEE, ARIZONA.

MECHANISM non CONVERTING. n-ncirnocArrNs IN'ro ROTARY MOTION.

Specification of Letters Patent.

, Patented Nov. 10, 1914.

Application filed November 26, 1913. Serial No. 803,220.

To all-whom it may concern: r

Belt known that I, ROBERT A. Famine, citizen of the United States, residing at Bisbee, in the county of Cochise and State of Arizona, have invented certain new and useful Improvements in vMechanism for Converting Reciprocating Into Rotary Motion, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to mechanism forconverting reciprocating into rotary motion and has for its primary object to provide a device for this purpose wherein the full power of the reciprocating element is utilized and waste of energy overcome.

Theinvention has for another of itsobjects to provide a pair of shafts, a ratchet fixed uponeach shaft, a gear wheel provlded with dogs to engage the ratchet, a pair of racks connected to the reciprocating element and engaging the respective gear wheels, said gear wheels being alternately locked uponthe respective ratchets by said pawls in the reciprocating movement of the racks in opposite directions, a driven shaft, and means for transmitting motion from said first named shafts to the driven shaft constantly. in one direction. a

The invention has for a further object to produce a mechanism of the above character which is comparatively simple in its construction, is highly durable and eflicient in practical use and may be manufactured at small cost.

,lViththe above and other objects in View asvwill become apparent as the description proceeds, the invention consists in certain constructions, combinations and arrangements of the parts that I shall hereinafter fully describe and claim.

Fora full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which p Figure 1 is a top'plan view illustrating the preferred construction of my invention; Fig. 2 is a section taken on the. line 22 of Fig. 1; Fig. 3 is an enlarged detail section taken on the line 33 of Fig. 1; Fig. 1 is a sectiontaken on the line 4,41- of Fig. 1; Fig. 5 is an enlarged detail fragmentary section of one of the ratchets and. gear mounted thereon; Fig. 6 is a detail side elevation of one of the collars which is fixed upon the power shaft; Fig. 7 is an enlarged' detail section illustrating the mounting of the inner ends of the shafts; Fig. 8 is a detail side elevation of the guide memberfor. the reciprocating racks; Fig. 9 is a detail section taken on the line 9-9 of Fig. 1.

Referring in detail to the drawings, 5 designates a base of any suitable construction upon which the standards 6 are arranged. Additional bearing standards 7 are arranged at opposite sides of the base and in these standards the outer ends of shafts 8 are journaled. These shafts are mounted in the standards 6. It will be observed that one of said shafts is provided with a reduced inner end which is. telescopically engaged in a socket provided in the opposed end of the .other shaft, as clearly indicated at 9 in Fig.

7. Upon each of the shafts 8 a ratchet 10 is keyed or otherwise secured, said ratchet being held against longitudinal movement by suitable collars 11 arranged upon oppo site sides of the ratchet and secured to the shaft by suitable screws 12. .Each of the collars is provided with an annular flange 18 which is adapted to engage in a recess 14 provided in the face of a gear 15. These collar flanges serve to retain the gear in place and to hold the same against longitue dinal .movement with respect to the shaft. In the inner wall of the gear 15, a plurality of locking pawls or dogs 16 are pivotally mounted, said dogs being normally held by means of the springs 17 with their free ends in engagement with the teeth 10? of the ratchet 10. It is to be understood that the ratchet teeth and thelocking pawls 16 upon one of the shafts 8 project in an opposite direction relative to the pawls and the teeth on the other of said shafts.

1S designates the piston of ages engine or other power producing machine and to said piston, a forked bar 19 is suitably, secured. To each of the arms of this bar, one end 'of arack bar QOlSfiXGd, the lower face of said bar being provided withteeth 21. These rack bars engage with the respective gears 15 and rotate the same in the reciprocating movement of said racks. In order to hold the teeth of the rack bars in engage ment with the gear teeth, I provide the .member 22 which is provided adjacentvi'ts ends with spaced flanges 23. Betweenthese flanges the; rack, bars 20 are movably disposed, said flanges extending downwardly upon opposite sides of the gears15. The I that my guide member 22 is suitably secured to the upper ends of the standards 6.

Each of the collars 11 is provided at the juncture of the flange 13 with the body of said collar, with a semi-circular series of apertures 2a through which a suitable lubricant is supplied to the shaft 8. It will be understood from reference to Fig. 3 that the lubricant is applied to the inner faces of the guide flanges 23 so as to facilitate the movement of the rack bar and eliminate friction of said flanges upon the gears 15. This lubricant flows inwardly as indicated by the arrows and finally enters the outer ends of the inclined openings 2d whereby the same is directed to the shaft.

Additional standards 25 are mounted upon the base 5 in which the ends of the driven shaft 26 are journaled. This shaft is provided with a suitable belt wheel 27 which is traversed by the belt 28 extending to the machine which it is desired to operate. One

-. end of the driven shraft is provided with a gear 29 which meshes with a large gear 30 fixed upon one of the shafts 8. The other end of the shaft 26 has a sprocket wheel 31 fixed thereto which is connected by means of the chain 32 to a similar sprocket wheel 33 upon the other shaft 8.

From the above description taken in connection with the accompanying drawings, it is believed that the construction and manner of operation of my improved motion converting mechanism will be clearly and fully understood. In the operation of thepiston 18, the racks 21 are reciprocated and in their movement in one direction, one of the shafts 8 is positively rotated with respect to the other shaft, the gear 15 thereon being in locked engagement with the ratchet 10. As the other gear wheel is loose, the same'will be rotated by the rack which is engaged therewith with respect to the associated ratchet. Thus, the shaft which is rotated by the longitudinally moving rack bar transmits motion to the shaft 26 through the medium of the chain 32 or the gears 29 and 30, as the case may be, while the other of said shafts is rotated in theopposite direction. Upon the reverse longitudinal movement of the rack bars 21, the rotation of the shafts 8 is also reversed, and the gear 15 which was previously loose upon the shaft is now locked therewith throughthe medium of its pawls 16 and the ratchet 10. Thus, by a direct longitudinal thrust of the rack bars, I positively impart a constant rotary motion to the shaft 26 and utilize substantially the entire power of the reciprocating piston18 for this purpose, the respectiverack bars 20 alternately operating through the medium of the shafts 8 to rotate the power-shaft 26.

It will be appreciated from the above improved mechanism while of very simple construction is highly eificient in practical operation and may be economically operated. While I have shown and described the preferred construction and ar rangement of the several parts employed, it will be obvious that the invention is susceptible of considerable modification therein and I therefore reserve the right to resort a power shaft, gearing connecting the opposite ends of the power shaft to the respective first named shafts whereby the power shaft is rotated in one direction upon the alternate rotation of the first named shafts in opposite directions, a reciprocatory member, spaced racks connected to said member,

gears mounted upon each of the first named shafts and connected by the respective racks, and means for locking the gears upon the respective shafts in the reciprocating movement of the racks in opposite directions.

2. In mechanism of the character described, the combination of a pair of shafts having alined longitudinal axes, the endof one shaft telescoping in the opposed end of 1 I the other shaft, a power shaft, gearing connecting the opposite ends of the power shaft to the respective first named shafts, whereby said power shaft is constantlyrotated in one direction by the reverse alternate rotation of the first named shafts, a ratchet fixed upon each of-said first named shafts, a gear mounted upon each of said ratchets, means fixed upon the shaft to prevent longitudinal movement of the ratchets thereon P and to hold the gears against longitudinal movement with respect to the ratchets, looking means carried by the gear for engagement with the teeth of the ratchet to lock the gear thereto in its movement in one (31- rection, a reciprocating member, spaced racks connected to said member and engaged with the respective gears, and guide members for said racks to retain the same in engagement with the gears whereby said first named shafts are alternately rotated in reverse directions upon the opposite reciprocating movements of said racks.

3. In mechanism of the character described, the combination of a pair of shafts having their longitudinal axes alined, a power shaft, gearing connecting the opposite ends of the power shaft to the respective first named shafts whereby the power shaft is constantly rotated in one direction upon the alternating reverse rotations of the first named shafts, a ratchet fixed upon each of the first named shafts, a gear mounted upon each of said ratchets, spring pressed dogs carried by the gear for engagement with the ratchet teeth whereby the gears are locked upon the respective shafts to rotate the same in opposite directions, reciprocating racks engaged with the respective gears, a guide member having spaced pairs ofdepending flanges extending upon opposite sides ofthe respective gears and holding the same against movement longitudinally of the shaft with respect to the ratchet.

4. In mechanism of he character described, the combination of a pair of shafts having alined longitudinal axes, a power shaft geared to each of said first named shafts, whereby the power shaft is constantly rotated in one direction by alter-. nating reverse rotation of the first named shafts, a ratchet fixed upon each of the first named shafts, collars secured upon the shafts upon opposite sides of the ratchets, said collars having an annular flange, and a plurality of inclined openings at the baseof the flange for the feed of a lubricant to the shafts, a gear mounted upon each of the ratchets, the faces of the gear being recessed to receive the collar flanges, reciprocating racks engaged with the respective gears, means carried by the gears for locking the same upon the respective ratchets in the movement of the racks in opposite directions, and a guide member for said racks having spaced pairs of depending flanges extending upon opposite sides of the respective gears.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

ROBERT Z. FARMER.

Witnesses D. W. GALL, FREDERICK S. S'rrr'r.

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

Washington, D. 0."

each of

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