US1247487A - Actuating mechanism for dispensing apparatus. - Google Patents

Description

L. 't'. amm. CUATNG MECHA'MSM FSR BiSPENSING APPARAUS.

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W1 TNESSES By TTORNE Y L. E. BAKER. ACTUATING MECHAIMSM FOR DSPENSING APPARATUS.

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' ATTORNEY L. E. BAKER.

AC-TUATING IYIECIIANISI/I FOHIDISPENSING APPARATUS.

F APPLICATION FILED 956.3, Ig. LQ@ IS?.

Patented. Nov. 2G, 19W.

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6 SHEETS-SHEET L. E. AKEH. IICTUATIIIG MECHNISNI FOR DISPENSJNG APPRATUS.

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6 SHEETS-SHEET nnrrn earns narnia ormoni LINNAEUS E. BAKER, OF FORT WAYNE, INDIANA, ASSIGNOR T WAYNE OIL TANK AND PUMP COMPANY, A. CORPGRATION F INDIANA.

ACTATING MECHANISM FOR DISPENSING APPARATUS.

Specification of Letters Patent.

Patented Nov. 26d, 1191"?.

i Application led December 8, 1916. Serial No. 135,736.

To all whom it may concern.' .p

Be it known that I, LINNAnUs E. BAKER, a

' citizen of the United States of America, and

resident of Fort VVavne, in the county of Allen and State of Indiana, hav'e invented certain new and useful lImprovements in Actuat-ing Mechanism for Dispensing Apparatus, of which the following is a speciication. n

This invention relates to improvements in actuating mechanism for dispensing apparatus of that class used for dispensing oil and similar products, suchf as that set forth in my previous application filed May 28, 1915,

Sr. No. 30,878, for dispensing pumps, The object of the improvement is to afford a construction composed of operating parts for actuating a reciprocating pump so that its dischargestroke, which requires a greater application of applied energy than its return stroke, may be accomplished with approximately the same energy as that required in the completion of the cycle of movement of the pump. Generally, in v4reciprocating pumps of this class, as the piston ivsy'moved in one direction, liquid is expelled from the device and also liquid is drawn thereinto for subsequent discharge;

and during the reciprocal stroke the plunger is moved to the opposite end of the pump cylinder without the transient passage of. liquid through the pump. The latter movement of the plunger requires comparatively less applied energythan its former movement which lifts the liquid in the pump and expels it therefrom. The intention is, in the present invention, to provide mecha- 'nism by meansof which the opposite movements ofthe pump plunger may be effected by the application of uniform energy. And another object is to afford a construction for reciprocating the pump in its opposite strokes at differingvelocities while the drivthe line 0J- of Fig. 3,-showing the driving clutch and actuating yoke therefor;

Fig. 5 is a detail view in section in a plane at rig-ht angles to that of Fig. 3 and including additional parts;

Fig. 6 is a detail view showing the clutch controlling levers in their'relative positions during the return stroke of the pump;

Fig, 7 is a similar. View upon a smaller scale of the same parts as they are positioned at the end of the return stroke;

Fig, 8 is a similar view of the same during the discharge stroke;

Fig. 9 is a detail view showing a crosssection ofthe rear part of the standard on the line .rof Fig. 5, there being a broken away portion to show parts ina lower plane; and,

Fig. 10 is an elevation of Fig. 9, there being also portions broken away and in section. i

Similar characters of reference indicate corresponding parts throughout the several views and having reference now to the same:

The pump proper is supported by a pedestall (l) and is provided with a cylinder (2), plunger (3), rod (4), and rack-bar (5)1 the latter being fixed uponA the rod so that the plunger` will become actuated accordingly as. the rack-bar is reciprocated. The mechanism for actuating the rack-bar is supported by a standard (6) that surmounts the head (7) of the pump proper. The

'standard receives support also from the discharge pipe (.8) that leads from the head.

A secondary discharge p ipe (9) also leads from the pump-head.

The actuating mechanism is comprised of.

a drive-shaft (10) having att-ached thereto a crank (11), the center portion (12) 0I the shaft (10) being substantially square, and upon said portion is s lidably mounted a ratchet member (13) adapted to be rotated with the shaft asthe latter is turned. The i opposite ends of the ratchet member have an annular series of teeth (14) and (l5) respectively, and have also engaged relation with a yoke (1G) that is rigidly mounted upon an oscillating shaft (17); The driveshaft has loosely mounted thereupon pinions (18) and (19), the latter of which meshes constantly` with the rack-bar Each pinion has in rigid connections therewith a toothed hub (20) and (21) respect1vely,`the VteetlI` of which are adapted to be direction as in the former instance, the rack-- engaged y'respectively by the teeth on the corresponding ends of the ratchet member accordingly as the latter is shifted from one position to the other.

A back-gearing is mounted 1n the standard and consists of a countenshaft (22) arranged in parallel relation with the driveshaft and having fixed thereon' a pinion (23) and 4gear (24), the former being 1n mesh with the rack-bar and the latter meshing with the pinion (1S) on the drive-shaft, so that as the drive-shaft is revolved and the ratchet-member is in engaging relation with the hub of the pinion (18) the rackbar will become actuated through the medium of the ear (24), counter-shaf`t (22) and pinion 23), during which operation the pinion (19) idles upon the drive-shaft as it is rotated by the movement of the rackbar. When the ratchet-member is shifted so as to engage the hub of the pinion (19), andthe drive-shaft is turned in the same bar will be driven through the medium of the pinion (19) in the opposite direction, during which operation the counter-shaft together with its fixed pinion and gear as Well as the loose pinion (18) on the driveshaft will rotate idly.' The ratios between the several pinions and gear are such that the driven actions of the rack-bar in its opposite strokes differ in velocity.

The pinion (25) on the counter-shaft is for actuating a counter which forms connections therewith through the slot (26) in the standard, the counter being no part of the invention, is not shown. Also, the shaft (22) projects through one side of the stand ard for the purpose of connection with an indicator' which also is not shown.

The primary oscillating member comprised of the shaft (17), yoke (16), and a lever (28), is provided for shifting the ratchet-member, -and the secondary oscil-V lating member comprised of the shaft (27), casting (31), and crank having a roller (39), -is provided for automatically actuating the primary oscillating member.

The oscillating shafty (17) extends in a line atright angles to the drive-shaft, and the secondary oscillating shaft (27) extends in a line parallel with the formeroscillating shaft. Upon the outer end of' the shaft (17) is rigidly fixed the lever (28) having an upwardly extending lug (29) in which is mounted an adjusting screw (30), and upon the outer end of'the shaft (27) is rigidly fixed the casting (31) having oppositely extending ears (32) and respectively and also a pendant lug (34), the latter being adapted to bear against the end of the adjusting screw which is Carried by the lug on the lever. [a reig spring (35) is connected at its ends f 0 sitions,

,u et) and that project respec- Laarne? tively from thelever and ear (33) on the casting (31), and tends to hold the lever and casting so the lug of the latter will bear against the setscrew (30). The secondary oscillating shaft (27) has also fixed thereon 70 a crank (38) having a'roller (39) mounted thereon that bears upon the edge' of the adjacent flange (40) on the rack-bar. A retracting spring (41) is secured at its opposite ends respectively to studs (42) and (43), the former extending from the stand-- ard and the latter from theear (32) of the casting (31), the spring having the tend ency of holding the casting normally so that the roller (39) will bear a ainst the'o flange (40). In the flange is ma e a recess (44) into which the roller may drop at the pbint where the rackbar reaches the lowermost stage of its movement, the rece being located in the guide accordingl vAn adjustable stop A(45) is mounted in the standard and is adapted to limit the upward movement ofthe rack-bar `by contacting with a projection (46) at the lower end of the latter, and aplate (47) secured upon the'pumpu'od (4) at the upper end of the rack-bar serves to limit the downward movement thereof by contacting with the top of the standard through which it extends.

The apparatus has also a series of adjustable'stops (48), (49) and (50)"each of which is mounted upon a vertical oscillating rod (51) the ends of which are journaled respectively in tliepulnp-head and standard. The said stops are spaced apart atsuitable 100 intervals and extend in dierent radii from each other so that any one or the other of the stops may be brought into the path'of the projection (46) on the rack-bar accordingly the rod (51) is turned, and thus arrest the upward movement ofthe rack-bar ywhen the projection contacts `with the stop.

As a means for turning the rod (51) and holding the same in any of its adjusted poand as a means for indicating the position of its adjustment, a casting (52) is secured fixedly to the rod at its upperend adjacent the projecting ortion of the standard and is provided Witli a segmental flange (53), the upper face of which bears desig- 115 nat-ing characters (54) which aresignificant` of the various quantities of liquid discharged by the pump accordingly as the stopsvare positioned by turning the rod (51). The casting (52) has also a thumb-piece (55) for 120 manipulating the same, and also a notched liange (5G), the notches of which are adapted to he engaged by a spring pressed ball (57) located in a perforated lug4 (5,8)v that depends from the standard. lWhen the ball enters any of the notches of the flange, it tends tohold the. casting fromturning and the notches' are so spaced apart that the detained positions will correspond respectively with the corresponding operating positions 3.31)

Laives? of the stops on the rod. The designating characters (54) are also spaced apart to cor- 'respond with the. several positions of the stops, and an index (59) is secured to the standard and overhangs the segmental flange at a convenient point so as to register properly with the designating characters as the latter are mov-d successively from one adjusted position to another.

One function of the lever (28) is to manually shift the clutch-member from one engagingposition to the other asoccasion may anse, and this is done by swinging the lever accordingly in opposite directions which causes the oscillating shaft (17) to move with the result that the yoke fixed thereon Shifts the clutch-member.- This lever may be shaped so as to normally extend toward the righthand instead of toward theleft as shown, if so desired. However, such -alteration would in no way change its functwn but may in some cases be more convenient for the operator.

When the rack-bar is at its lowermost position and the roller (39) on its crank rests in the recess (44:) and is held therein owing to the action of the spring (41), the lug (34;) bearing against the set-screw (30) holds the lever in position for the engagament' of the ratchet-member with the hub (20) on the pinion (18), as illustrated in Figs. 3 and 7. Upon the rotation of the crank right handedly, when the parts are thus positioned, the ratchet-member engages with the pinion (18) and thereupon motion will be transmitted throughlthe gear, counter-shaft and pinion (2S) to the rack-bar and cause the same to move upwardly. As the rack-bar rises, the roller is forced outward from the recess and bears against the edge of the guide on the rack-bar, and owing tothe consequent oscillation of the shaft (27), the lug (34) moves from the set-screw (30). The spring (35) tends to draw the lever so as to shift the ratchet-member from its engagement, but the disengagement is resisted owing to the torquemaintained between the drive-shaft and ratchet-member and also between the latter and thepinion during the application ot pressure to the crank. The teeth of the ratchet-member and adjacent hubs of the corresponding -pinions may also be slightly undercut and thus afford greater resistance.

Consequently driving rclationbetween the ratchet-member and pinion 1s maintained contrary to the action of the spring At this stage the parts are positioned asv illustrated in Fig. 8. By "continuing the movement of the crank the rack-bar is thus raised until interrupted by the stop, at which stage the pressure applied to the crank is relaxed b v the operator, whereupon the ratchet-member becomes released from its detained connection with the pinion (18) and because of the action of the spring (35) and lever (28), the ratchet-member is shifted into engagement with the pinion (19), the parts then being positioned as illustrated in Fig. 6. Upon the continuation of the right-handed movement of the crank the ratchet-member actuates the'pinion (19)A accordingly and the rack-bar is consequently driven downwardly to its former position, the recess in the rack being then positioned to receive the roller, and thus admit movement of the secondary oscillating member. As pressure on the crank is relaxed by the operator at this stage, the oscillating members are returned to their opposite positions by the contraction of the spring (41), the secondary member being actuated directly by the spring and the primary member beingmoved by the former member. The ratchetmember being shifted by the action of the primar, member becomes rengaged with the pinion (18). By manipulating the lever (28) at any stage in the movement of the rack-ba r, the ratchet-member may be shifted from connection with one of the pinions into engagement with the other, the yielding of the spring (35) admitting of the necessary action of the lever. Thus, the direction of movement of the rack-bar may be reversed at will as the crank is rotated by 'merely' shifting the lever from one of its positions to the other. Also, at any stage during the u pward movement of the rack-bar, the applied pressure to the crank may be relaxed so as to release the ratchet-member from connection with the pinion (18) whereupon the ratchet- T00 member 4will become shifted into engagement with the pinion (19) owing to the action-of the spring (35), and by continuing the motion of the crank the movement of the rack-bar becomes reversed and re- 105 turned to its .lowermost position with the result that the ratchet-member rengages the' .pinion (18) upon relaxation of the presshaft having a crank for actuating the same and having two pinions loosely mounted thereon, one of which meshes with `the rackbar and the other with the-gear, each inion having a toothed hub; a ratchet-mem er on' 120 the drive-shaft, adapted to be driven thereby and to be shifted thereon longitudinally into driving relation With'either pinion adjacent thereto; an oscillating shaft having means in connection therewith for shifting the ratchetmember, a secondary oscillating shaft having in connection `therewith a following member comprised of a crank and roller adapted to bear against the side of lthe rackbar, the latten having a recess therein 130 for holding th'efsecondary oscillating mehr. ber in contact with the rapk.

5. In apparatus of the class described, a pump proper including reversible gearing for actuating the same; a primary oscillatadapted to receive the roller when the rackbar is at one end of its stroke; a springactuated member fixed upon the secondary oscillating shaft; a hand lever fixed upon the formeroscillating shaft and having adjustable means for contacting with said member; and a spring in connection with. said member and lever tending to maintain contact therebetween.

` anism;'a secondary oscillating member controlled by the pump actuating mechanism; and a spring connection'between the prirack and being adapted to be actuated thereby at one end of the stroke thereof, and being also adapted to actuate the primary oscillating member; a spring couplingsaid oscillating members; and another spring l0. In apparatus of; the class des pump proper including and also mechanism for actuating the raclr directly in yone direction and indirectly in the opposite direction through the medium a rack and gearing,

ing `member for controlling said mechalike 2. vIn apparatus of the class described, 'a mary and secondary oscillating members 'pumpproperincluding a rack for actuating for actuating the former in one direction, the same' a drive-shaft having means in c011- the secondary oscillating member being nectio therewithfor its manipulation; two adapted to actuate the primary member inpinions loosely mounted on the drive-shaft, dependently of said spring connection.

one of which meshes with the r'ack, and 6. In apparatus of the class described, a vmoves it in one direction; a counter gearing pump proper ineluding a reversible driving engaging the other pinion and rack and begear for actuating the same; a primary osing adapted to move the latter in the oppocillating member for .reversing said mechasite directiong'a ratchet-member longitudinism; and a secondary oscillating member :o nally movable 'on the drive-shaft and being controlled by the pump mechanism for ac- 4adapted t0 be shifted into engagement with tuating the primary oscillating member.

either inion and drive the same when the. 7. In apparatus of the class described, a drive-shaft is turned in one direction; and a pump proper including a reversible driving mechanism` having connection with the gear for actuating the same; a primary osratchet-member and bearing' relation with cillating member for driving said mechathe rack, the bearing surface of thelatter nism reversibly accordingly as actuated; a being shaped as to cause said mechanism secondary oscillating member controlled by togslilfty said member at one end of the stroke the pumpv mechanism for shifting the priof the rack. mary oscil1atig.member; and springs in 3. In mechanism" of the class described, a connection with the primary and secondary pump proper including a rack; a mechamembers for holding same in actuating renism includingadrive-shaft and reversible lation with each other and with the pump gearing for reciprocating the rack; an osmechanism. cillating member having means in connec- 8. In apparatus of the class described, a

'35 tion therewith for reversing said gearing; pump proper including a rack and reversia secondary oscillating member" including a ble driving gear for actuating the same,'the.v follower that has bearing relation with the said rack having a fiange with a recessl rack; a spring in connection with the sectherein; a primary oscillating member havondary oscillating member for holding the ing means in connection therewith for ac- 40 follower in contact with the rack; and antuating the rack directly and also indirectly other spring connecting. said oscillating through said reversible gear accordingly members tending'to actuate the former osas shifted; and a secondary oscillating cillating member when the secondary oscilmember controlled by the pump mechanism lating member is actuated, the bearing surand governing the primary member.

face of said rack being so shaped as to ac- 9 In apparatus 0f the Class described, a tu'ate the latter member through the `mepump proper including a rack and gearing dium of the follower at one end of the for actuating the same, the said rack having stroke of the rack. va flange with a recess therein; a primary os- 4. In apparatus of the class described, a cillating member Ihaving means in connecpump proper including a rack, the latter tion therewith for reversing said gearing having a flange with a recess therein; a' 4or actuating the rack directly accordingly back gearing having driving relation with as shifted; a secondary oscillating member ,y the rack; a drive-shaft; two pinions loosely having bearing on the Vflange of the rack mounted on the drive-shaft; one `meshing and adaptedlto engage in said recess therewith the raclrfand the other with the back, in; and a spring connecting the primary gearing; a ratchet-member slidably mountand secondary members, thelatter member ed upon and rotatable with thedrive-shaft; being adapted to engage and actuate the a primary oscillating member for shifting former member directly and also actuate y the ratchet-,membema secondary oscillating the lformer member through the medium of member having bearing relation with` theI said spring in the opposite direction. l

cribed, a, -A

lating member acapd im @hifi h@ prmafy member by (iir Mmmm', herewitb, md having als@ bemin@ mion with the meh. said rack bia-'mg shape im www@ riche 96- 30 omdarymemb mi :ma @d awake; a, Spring homing ih@ seoma'y m'ambe im Contact Wth th?, rack; :m 591mg wwwb-

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