US1497368A - Gearing j - Google Patents

Description

June 10, 24- 1,497,368

N. FRIES ET AL G-EARING FOR DISPENSING PUMPS Filed Avril 4. 1921 2 Sheets-Sheet 1 N. FRIES ET AL GEARING FOR DISPENSING PUMPS June 10, 1924.

Filed April 4. 1921 2 Sheets-Sheet 2 Patented June 10, 19248 epplieatien liter]. April, 4.,

T 0 all whom it Wiftj/ concern:

lie it known that we hlnsiron. il 'hitlbh FRANK B. lilinnns, and thrones U. Bimini. citizens of the United t ltzites oi finierica. and residents of Fort lViryne, in. the county of Allen and State oi lnciana, have inventinproveinexits in ed certain new and usctui l. Hearing for Disjiiensing Pumps, of which the following is a specification.

This invention relates to improvements in gearing for dispensing pumps oi? the crank operated reciprocating type, and the object thereoi is to provide gear?i tor actuating the pump. so constructed that by simple manipulations (it the crank the pump plunger wll be driven according l in one direction or the other as deli-ed and through the medium of gearing ot' dillere t ratios. Thus, during the suction and dis-- charge stroke of the pump. gearing oi? the low ratio is en'iployed which aiiiords ease of? operation, and during the return strolre ot the pump which requires coinparetirely less force, gearing ot a higher ratio is employed through which the return stroke is effected with comparatively greater velocity. By this construction the physical energv required to operate the crank during the suction and discharge stroliie zitndreturn strolre of the pump is apjiroximatelv uniitorin, while the return stroke is effected with much greater rapidity than the suction and discharge stroke which requires greater force. A further purpose of the invention is to construct the mechanism for shifting engagement from one gearing to the other so that the operation oil shitting may he easily il-CCOlTlPliSllBd at any stage during the cycle of: movement of the pump by simple manipulation of the crank.

The objects of the improvement are ac complished hy the construction illustrated in the accompanying drawings in which:

Fig. 1 is an elevation of the housing; which is shown partially broken away to en" pose the gearing;

Fig. 2 is an end elevation of the apparatus showing portions broken away to expose the working parts;

Fig. 3 is a detail view of the adjustahle engaging member; and

Fig. 4.- is a detail plan "View oi the stop mechanism showing a horizontal section on the line mof Fig. 3.,

t'liniilur characters ot reference indicate corresponding: parts throughout the several views. and reterrii now to the same:

l is a pump bar a julnip-rod 2 by which it is actuated. is a rack-ha! fixed on the puiup-rod :iiul irejecting up through the sear housing 1: and having; a series of lugs :3 3. and that project therefrom respertirelj in diitlerent vertical planes. inr'wahle in member 53 mounted upon a ion 'itudiua adjustable shait 9 in the housin is arranged to he positioned selecvelv line the paths of the several lugs on the raeln a n d a oi adjustable stops 10 are arranged to in ercept and limit more merit of the one? member in. its respective zul ."ed msitions. The purpose of the en member and adjustable stops and lhe lugs on th rack-bar is to interrupt movement oi the pump in its discharge strohe at various-1 stages thereo'l accordingly as tile quantity oi? liquid to be discharged hv the pump may he predetermined.

' c g; '7 l'iousingr 4; is siu iported upon .ndnre. l1 mounted on thepump head 12 and contains the near-in by whicii the rackhar is actuatmi. The gearing is comprised of a piniiui l3 tired on a countershajtt lei; and on; god in mesh with the rack-bar. hi e upon the coimtershatt are lined an insir l5 and intermediate gear 16. A ft 1'? is rotatably mounted in the housing); and has also longitudinal movement therein. and upon the drive-shaft are loosely mounted two clutch actuated gears 18 and 19 that have constant meshing engageclutch actu ted nears, upon the driveshatt is tired a ClIltCL-i rnetnher that adapted to selectively engage the clutch gears 18 and accordingly as the drive-shaft is shifted longitudinally in the housing. The gear 18 has one end thereof a disk 2]. that by hearing asrainst the adjacent end oi the internal r prevents disalignment of the clutch gem? therewith. Also the intermediate near 1.6 a similar disk 22 at one end thereof that. h hearing against the adjacent end oi the clutch. gear 19 prevents its disalipgninent therewith.

The driveshattt 17 has hired upon its outer end a crank 23 by which it is rotated and is also shifted longitudinally so as to selectively engage the clutch 20 with the clutch gears 18 and 19.

In the operation of the invention, the engaging member 8 is positioned in the path of one or the other of the lugs 5, (5, or 7 on the "ack-bar according to the predcten mined quantity of liquid to be discharged, and the drive-shaft is shifted longitudinally outward by manipulating the crank so that the clutch engages the clutch-gear 18. The crank is then turned so that the countershaft is rotated through the medium of the clutch gear 18 and internal gear 15 which causes the pinion 13 fixed on the shaft 11- to lift the rack-bar until its upward movement is interrupted by the engaging member Which intercepts one or the other of the lugs, accordingly as adjusted, and impinges a ainst the corresponding stop, and thus the discharge stroke of the pump which is actuated by the rack-bar is limited.

The driveshaft is then shifted inwardly so that the clutch is withdrawn from engagement with the clutch gear 18 and operatively connected with the clutch gear '19, whereupon further turning movement of the crank in the same direction as in the former instance causes the countershaft to rotate in the opposite direction through the medium of the clutch gear 19 and intermediate gear 16, thus downward movement is imparted to the rack-bar by the pinion 13. The gear ratio between the clutch gear 19 and the intermediate gear 16 being approximately equal, the downward or return stroke of the rack-bar is effected quicker than the upward or discharge stroke which is effected through the medium of the clutch gear 18 and the internal gear 15 which are of unequal ratio, and the leverage correspondingly greater. Thus, in making the stroke requiring the greatest force greater leverage is utilized, while the return stroke requiring less force is made comparatively quicker.

By this construction the rack may be driven upwardly with great force and downwardly with great rapidity, and may be reversed in the direction of its stroke at any stage thereof by simple manipulations of the crank.

lVhat we claim is:

1. In mechanism of the class described, a driven member; a gearing for actuating said member; two clutch gears engaged with said gearing; and a. cranking device for said. clutch gears including a clutch adapted to be shifted selectively into engagement therewith by longitudinal adjustment of the cranking device.

2. In mechanism of the class described, a support having bearings therein: a driven member; a countershaft having actuating relation with said member; a drive-shaft including a crank; two clutch gears loosely mounted on said drive-shaft; an intermediate gear fixed on the countershaft and meshing with one of said clutch gears; an internal gear also fixed on the countcrsha'l't and meshing with the other clutch gear: and means fixed on the driveshaft adapted to selectively engage the clutch gears accordingly as the drive-shaft is adjusted longitudinally.

3. In mechanism of the class described, having a driven member: a cranking device including two clutch gears and a clutch for selectively engaging the clutch gears; and a gear mechanism in constant engagement with the driven member and the two clutch gears.

1. In mechanism of the class described, having a driven member; a crank actuated drive-shaft, a gearing engaging the driven member; two clutch gears, each having actuating relation with. the gairing and in which said drive-shaft is longitudinally movable; a clutch fixed on the drive-shaft adapted to selectively engage said clutch gears accordingly as the drive-shaft is longitudinally positioned: and means in connection with the gearing and said clutch gears adapted to hold the clutch gears spaced apart.

In testimony whereof we affix our signa tures, in presence of two witnesses.

NESTOR FRIES. FRANK B. ETLERS. GEORGE U. BRAKE. Witnesses:

MA'IILDA ME'r'rLER, WALTER G. BURNS.

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