US1261479A

US1261479A - Single-acting quick-return pump.

Info

Publication number: US1261479A
Application number: US250915A
Authority: US
Inventors: Allen A Bowser
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-01-16
Filing date: 1915-01-16
Publication date: 1918-04-02
Anticipated expiration: 1935-04-02

Description

A. A BOWSER.

SINGLE ACTING QUICK RETURN PUMP.

APPLICATION flLkl) IAN-16.1915.

Patented Apr. 2, 1918.

4 $HEETS-SHEET I.

A. A. BOWSER.

SINGLE ACTING QUICK RETURN PU MP. APPLICATION HLED JAN. l6. l9l5.

1,261,479. Patented Apr. 2,1918.

4 SHEETS-SHEET 2.

A. A. BOWSER.

SINGLE ACTING QUICK RETURN PUMP.

APPLICAIION mu) JAN. 16. 1915.

l ,26 1 ,47 9. Patented Apr. 2, 1918.

4 SHEETS-SHEET 3- A. A. BOWSER.

SINGLE ACTING QUICK RETURN PUMP.

AF'lLlUAllON HLED JAN. l6. l9l5.

ALLEN A. BOV/SER, 0F FORT WAYNE, INDIANA.

I SINGLE-ACTING QUICK-RETURN PUMP.

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application filed January 16, 1915. Serial No. 2,509.

T 0 all whom it may concern:

Be it known that I, ALLEN A. P-owsnn, a citizen of the United States, residing at Fort IVayne, in the county of Allen and State of Indiana, have invented certain new and useful Improvements in Single-Acting Quick-Return Pumps, of which the following is a specification.

My invention relates to a quick return pump and has for its primary object the provision of improved mechanism whereby power applied to a rotatable element or handle of the pump at any given speed may be transmitted to a second rotatable element to drive the second element slowly in one direction and more rapidly in the reverse direction.

IVith the above and other objects in view, this invention consists substantially in the combination, arrangement, and construction of parts all as hereinafter described, shown in the accompanying drawings, which forma part of this specification and illustrate the preferred embodiment of the invention, and more specifically set forth in the subjoined claims.

In the drawings, Figure 1 is a side elevation of a pump of the class to which the present invention applies;

Fig. 2 is a top plan view of pump actuating mechanism constructed in accordance with the principles of this invention, a portion of the casing thereof being sectioned;

Fig. 3 is a section approximately on line 22 of Fig. 2;

Fig. 4 is a view similar to Fig. 3, showing a different position of the parts;

Fig. 5 is a section taken approximately on line 44 of Fig. 2 with a portion of a gear removed;

Fig. 6 is a section taken approximately on line 5-5 of Fig. 5;

Fig. 7 is a section taken approximately on line 6-6 of Fig. 6,'and

Fig. Sis a view similar to Fig. 7, showing a different position of the parts.

For the purpose of showing a practical application of my invention, I illustrate and describe it as incorporated in the operating apparatus of a reciprocating piston pump.

Preferably, the pump is of the single-acting type, but for the sake of brevity all parts of the pump proper are omitted except portions of the casing, those portions of the operating apparatus necessary for understanding of the invention, and a vertically reciprocating rack so connected with the piston of the pump that the two operate synchronously. In this pump the load is carried during the upward stroke of the piston and, hence, it is desirable to elevate the pump piston by means of reducing gears and to return the pump piston by gearing requiring less turns of the operating mechanism than are necessary in the up-stroke.

It has been customary to return the pump piston on its idle stroke,.by rotating the operating handle in reverse direction at increased speed, but it is found, in practice, that people do not operate the handle readily at faster speed in reverse direction. By operating the handle of this pump at the same speed in both directions, and having gearing which returns the pump piston more rapidly on its return stroke,-more complete power strokes can be made in the same time u ith less fatigue and consequently the pump is operated with more eflicien'cy, and more liquid can be dispensed in a given time than with the old construction.

Reference numeral 10 indicates the casing of a pump shown in elevation by Fig. 1, which is provided with a removable portion 10*. Thls pump has a vertically reciprocable rack 11 connected with the pump piston 9 by means of the rod 8 with an inlet 7 at the bottom and an outlet 6 at the top of the pump cylinder or casing. An idler shaft 12 is suitably journaled in the pump adjacent the rack and fixedly secured to this shaft is a rack inion 13, meshing with the rack 11. An idler gear .14 is mounted upon the shaft 12 and adjacent the outer side of rack pinion 13, while an idler pinion 15 is like wise mounted upon the shaft 12, adjacent the inner side of rack pinion 13, a pin 16 parallel to shaft 12 passes through pinion 13 and into gear 14 and idler pinion 15, thereby locking the latter members into fixed relation with the rack pinion 13 and the idler shaft 12. Parallel and adjacent to the idler shaft 12 is a power shaft 17 operated by a crank or hand lever 5 (see Fig. 1) to which is keyed a collar 18. Rotatably mounted upon the collar 18 is a power gear 19, meshing with idler pinion 15, and rotatably mounted upon the shaft 17 is a power pinion 2O meshing with idler gear 11. As best seen in Fig. 6, the inner side of power pinion 20 is provided with a sleeve 21, which, with the pinion, is rotatable upon the shaft 17 and which extends into the annular space formed between the power shaft 17 and collar 18. A slot 22 is provided in the collar 18 and traverses the collar in a plane approximately tangential to the inner periphery thereof. A preferably rectangular notch 23 is provided in the outer periphery of the sleeve 21 in such position that at each revolution of the collar 18 the slot 22 and notch 23 may be brought into register. A similar notch 24 is provided in the inner periphery of power gear 19 in such position that it, also, may be made to register with slot 22 by rotation of the collar 18. For the purpose of looking to collar 18 for rotation therewith either sleeve 21 or gear 19, sliding pawl 25 is slidably ]positioned within slot 22, the pawl being s aped at opposite corners in conformity with the

notches

23 and 24. For a purpose to be described an offset extension 26 is pro vided upon the pawl. An annular flange 27 is formed upon the outer side of power gear 19 concentrically with power shaft 17, and within the recess formed by. this flange is positioned any suitable form of friction ring 28, provided on its inner side with a recess 29, adapted to receive the ofiset extension 26 of pawl 25. Sufficient friction is provided for between the ring 28 and the flange 27 to cause a drag of the pawl 25 through slot 22 when power is applied in either direction to shaft 17.

1n the operation of this invention, and considering the parts at rest, with pawl 25 positioned within the confines of slot 22, power is applied to ower shaft 17 moving it in the counter clochwise direction indicated by arrows in Figs. 1 and 7. Such movement of the power shaft gives rise to similar movement of collar 18, which in its movement carries with it pawl 25. By reason of the load the gearing carries, however, friction ring 28 exerts a drag upon the pawl, causing the pawl to enter notch 23 when that notch registers with slot 22. When the pawl, which is of sufficient siZe to engage both notch 23 and a portion of slot 22, is in such position, the power of shaft 17 is communicated through collar 18 and the pawl 25 to sleeve 21 and power pinion 20, and the pinion 20, being in mesh with the idler gear 1 1, causes rotation of the idler shaft 12 and consequent upward travel of the rack 11, as indicated by the arrow upon the rack in Fig. 1. When it is desired to reciprocate rack 11, power is applied to shaft 17 in a reverse or clockwise direction, indicated by curved arrows in Figs. 3 and 8. The drag of the friction ring is now in the opposite direction from that just mentioned, causing a travel of pawl 25 through slot 22 and into engagement with notch 21 and the other end of slot 22 when the slot and that notch register. Upon such engagement the power of shaft 17 is communicated through collar 18, pawl 25, and power gear 19 to idler pinion 15 and idler. shaft 12, causing downward movement of rack 11, as indicated by the arrow upon the rack in Fig. 3. During the first described upward movement of the rack, power gear 19 was idled upon collar 18, and during the last mentioned downward movement of rack 11, power pinion 20 and its sleeve 21 were idled upon shaft 17 and within collar 18. Considering the power as applied in a counter clockwise direction to shaft 17 and at a given speed, it will be seen that the power passing through pinion 20 and idler gear 14: reaches rack 11 through reducing gears, while conversely, the application of power in a reverse direction to shaft 17 and at the same speed, passing through power gear 19 and idler pinion 15, is conveyed to the rack 11 through multiplying gears, thereby effecting a more rapid downward travel of the rack.

With this construction, it is obvious that by simply rotating the handle 5, at constant speed in both directions, the pump piston is moved slowly on its working stroke and rapidly on its return or idle stroke.

1n the accompanying drawings and in the foregoing description, is set forth the preferred embodiment of my invention, but it is obvious that one skilled in the art may make modifications thereof without departing from the spirit of the invention.

1 claim:

1. In a single acting pump, the combination with a pumping member, of an operating mechanism therefor which includes a rotary driving member, and means dependent upon the direction of rotation of said driving member to drive the pumping memher more rapidly in one direction than in the other while the speed of the operating mechanism is constant.

2. In a single acting pump, the combination with a pumping member, of an operating mechanism therefor which includes a rotary driving member, and intermediate connections dependent upon the direction of rotation of said driving member to drive the pumping member at difierent speeds in 0pposite directions while the speed of the operating mechanisn: is constant.

3. In a single acting pump, the combination with a pumping member, of an operating mechanism which includes a rotary driving member, two sets of gears of different sizes, and means dependent upon the direc tion of rotation of said driving member to alternately connect these sets of gears with the pumping member on the working and return strokes while the speed of the operating mechanism is constant.

4. In a single acting pump, the combination with a rotatable pump driving member, of a uniformly rotatable power element, a gearing connection to drive the member from the element at a reduced speed in one direction, and another gearing connection to drive the element from the member at an increased speed in the other direction for the same speed of operation of the said element, the said connections being automatically made dependent upon the direction of rotation of said element.

5. In a single acting pump, the combination with a rotatable pump operating member of a uniformly rotatable power element, reducing speed driving means, increasing speed driving means, and means dependent upon the direction of rotation of the element to connect either driving means between the member and the element to rotate the member at-one speed in one direction of movement of the element and at a different speed in the other direction of movement.

6. In a single acting pump, the combination with a pump operating gear member of a rotatable power element, reducing speed driving means, increasing speed driving means, and means dependent upon the direction of rotation of the element to connect the element with the member through the reducing speed driving means in one direction and through the increasing speed driving means in the other direction.

7. The combination with a single acting pump, of a pump operating gear member, of a rotatable power element, reducing speed driving means, increasing speed driving means, and means dependent upon the di rection of rotation of the element to connect the element with the member through the reducing speed driving means to rotate the member in one direction and through the increasing speed driving means to rotate the member in the other direction.

8. In a single acting pump, the combination with a pump driving gear member of a rotatable power element, reducing speed driving means, increasing speed driving means, and a single means dependent for operation upon the direction of movement of the element to connect it through either one of the driving means to rotate the member in either direction.

9. In a single acting pump, the combination with a rotatable pump operating gear member, of a rotatable power element, a

double train of gears, one increasing and one reducing, and means dependent upon the direction of rotation of the element for connecting the element to the member through either gear train for rotating the member slowly in one direction and rapidly in the other with the same speed of rotation of the element.

10. The combination of a pump having a reciprocable driven member and a rotatable handle, of a double driving connection be tween the member and the handle dependent for operation upon the direction of rotation of the handle to reduce the driving speed from the handle to move the member slowly in one direction and to increase the driving speed to move the member rapidly in the other direction.

11. The combination of a pump having a reciprocable rack and a rotatable power handle, of a double driving connection between the rack and the handle dependent for operation upon the direction of rotation of the handle and comprising a'pinion engaging the rack and a driving connection between the pinion and the handle for driving the pinion more rapidly than the handle in one direction of rotation and less rapidly than the handle in the other direction of rotation.

12. The combination with a single acting pump having a reciprocable driven member and a rotatable driving member, of a double driving connection between the reciprocable member and the rotatable member dependent upon the rotation of the rotatable member for reducing the speed from the rotatable member to the reciprocable member for driving the latter slowly upon its power stroke and for driving the reciprocable member at a speed increased from the speed of the rotatable member when driving the reciprocable member in the other direction.

13. A single acting pump having a reciprocable operating rack, a driving pinion rotatable driving member, gears mounted thereon meshing respectively with the other gears, and means comprising a driving pawl dependent for operation upon the direction of notation of the rotatable member for connecting either one of the gears mounted on the driving member with the driving member to rotate the pinion at a speed less than the speed of rotation of the driving member in one direction and at a speed greater than the speed of rotation of the driving member in the other direction.

14. In a single acting pump, the combination with a rotatable pump operating gear member of a rotatable power element, a gearing connection to drive the member from the element at a reduced speed in one direction, another gearing connection to drive the element at an increased speed in the other direction, and a driving pawl dependent for operation upon the direction of rotation of the power element for placing either gearing connection in operation.

15. In a single acting pump, the combination with a rotatable pump operating member, of a rotatable power element, a recessed collar secured to the power element, a gear freely mounted on the collar having a driving connection with the member to be rotated, a gear mounted on the power element having a driving connection with the member to be rotated, and a pawl movable in the recess of the collar to connect either the gear on the collar or the gear on the power element with the pump operating member.

16. In a single acting pump, the combination with an operating gear member therefor, of a rotatable power element, a slotted collar secured to the power element, a gear freely mounted on the collar having a driving connection with the member to be rotated, a gear mounted on the power element having a drivin connection with the memher to be rotatetf, a pawl movable in the slot of the collar to connect either the gear on the collar or the gear on the power element with the member to be rotated, and means dependent upon the direction of rotation of the power element to move the pawl into either position.

17. ln a single acting pump, the combination with a rotatable operating gear member, of a rotatable power element, a slotted collar secured to the power element, a gear freely mounted on the collar having a driving connection with the member to be rotated, a gear mounted on the power element having a driving connection with the member to be rotated, a slidable pawl movable in the slot of the collar to connect either the gear on the collar or the gear on the power element with the member to be rotated, and a fr1ction ring adapted to engage the pawl for moving it in either position and dependent for movement upon the direction of rotation of the power element.

18. In a single acting pump, the combination with a pump operating shaft, of a r0- tatable power shaft parallel thereto, a collar fixed upon the power shaft having a driving connection with the operating shaft and having a slot extending tangentially of its inner periphery, a power gear journaled upon the collar, having a driving connection with the operating shaft, a power pinion journaled upon the power shaft, an extension upon the power pinion positioned with the collar, a pawl movable in the slot of the collar, the inner periphery of said power gear and the outer periphery of said exten sion each bearing a notch registrable with the slot of the collar, and means for moving the pawl into simultaneous engagement with the slot and the extension notch during rotation of the power shaft in one direction and for positioning the pawl in simultaneous engagement with the slot and the notch of the power gear during rotation of the power shaft in the reverse direction.

19. In a single acting pump, the combination with a pump operating shaft, of a rota table power shaft parallel thereto. a collar fixed upon the power shaft having a driving connection with the operating. shaft, and having a slot extending tangentially of its inner periphery,'a power gear journaled upon the collar having a driving connection with the operating shaft, a power pinionjournaled upon the power shaft, an extension uponthe power pinion positioned within the collar, a pawl movable in'the slot of the collar, the inner periphery of said power gear and the outer periphery of said extension each bearing a notch registrabl'e with the slot of the collar, and means for moving the pawl into simultaneous engagement with the slot and the extension notch during rotation of the power shaft in one direction and for positioning the pawl in simultaneous engagement with the slot and the notch of the power gear during rotation of the power shaft in the reverse direction, comprising an annular flange concentric with the power shaft and formed upon the side of the power gear, an offset extension upon the pawl, and a friction ring recessed for engagement of said ofiset pawl extension and yieldingly carried within said flange.

20. In a single actin pump, the combination with a reciproca 1e rack, of an idler shaft rotatably journaled adjacent thereto, a rack pinion fixed upon the shaft and meshing with the rack, an idler gear fixed to the idler shaft at one side of the rack pinion, an idler, an idler pinion fixed to the idler shaft at the oppositerside of the rack pinion, a rotatable power shaft parallel to the idler shaft, a collar fixed upon the power shaft and having a slot extending tangentially of its inner periphery, a power gear journaled upon the collar and meshing with the idler pinion, a power pinion journaled upon the power shaft and mesh ing with the idler gear, an extension upon the power pinion positioned within the collar, a pawl slidable in the slot of the collar, the inner periphery of said gear and the outer periphery of said extension bearing each a notch registrable with the slot of the collar, an annular flange concentric with the power shaft and formed upon the side of the power gear, an offset extension upon the pawl, and a friction ring recessed for engagement by said offset pawl extension and yieldingly carried within said flange.

21. ltn a single acting pump, the combination with a reciprocating member, of a driving gear member, a rotatable power element, reducing speed driving means, increasing speed driving means, and a single mechanism dependent upon the direction of movement of the rotatable power element to 5 connect it through either one of the driving means to rotate the member in either direction but at different speeds.

22. In a single acting pump, the combination with a reciprocating member, of

a driving gear meshing therewith, relatively small and large gears in connection with the driving gear, a rotatable driving member gears mounted thereon meshing respectively before mentioned and respectively reversed in their comparative size with reference to such small and large gears, and mechanism dependent for operation upon the direction of rotation of the rotatable member for connecting either one of the gears mounted on the driving member with its appropriate gear connected to the driving gear to rotate said gear at a speed less than the speed of rotation of the driving member in one direction and at a speed greater than the speed of rotation of the driving member in the other direction. 4

23. In a single acting pump, the combination .with a reciprocating member, of a driving gear meshing therewith, a rotatable power element, a gearing connected to drive the driving gear from the power element at a reduced speed in one direction, another gear connected to drive such driving gear from the power element at an increased speed in the other direction, and a shifting connection operated by the direction of rotation of the power element for placing either gearing connection in driving relation whereby the reciprocating element may be operated at different speeds by reverse rotations of the rotatable driving member.

24. In a single acting pump, the combination with a reciprocating member, of

a driving member connected to and operating the same, a power element, intermediate connections between the power element and the driving member comprising two sets of gears respectively of increasing and de- 60 creasing speed ratios, and means controlled by the direction of movement of the power element.for alternately connecting the driving gear with these gearing connections of different ratios whereby the speed of the reciprocating member is varied accordingly in its opposite directions of movement.

25. In a single acting pump, the combination with a reciprocating member, of a driving member connected therewith, a

rotatable power element, two sets of connections between the power element and the driving member of different ratios, and shifting means operated from the rotatable power member in diiTerent directions of 66 rotation of the latter to respectively shift with the small and large gears the intermediate connections of different ratios into engagement with the driving member, whereby the reciprocating member is operated at different speeds in different directions of movement of the rotating 70 power element.

26. A pump, comprising a reciprocating piston, an actuator, transmission gearing whereby said actuator will operate the piston in one direction to deliver liquid from the pump, and a separate transmission gearing under control of the actuator for operating the piston in the opposite direction to its starting point.

27 In a pump, the combination with a reciprocating piston, transmission gearing for operating the piston in one direction to deliver liquid from the pump, and an actuating device for actuating said transmission gearing, of transmission gearing for actuating said piston in the opposite direction to its starting point, and a clutch device acting to drive said last named gearing in moving the piston to its starting point.

28. In a pump, the combination with a reciprocating piston, a rack for reciprocating said piston, a pinion meshing with said rack, transmission gearing for drivin said pinion in one direction and independently operable transmission gearing for driving said pinion in the opposite direction.

29. In a pump, the combination of a reciprocating piston, a rack for reciprocating said piston, a pinion meshing with said rack, variable speed transmission'gear mechanism for driving said pinion in opposite directions to reciprocate said piston, and an actuator controlling said gearlng'.

30. In a pump, the combination with a cylinder, a piston mounted to reciprocate therein, a train of gearing, for operating said plston, comprising a. clutch member adapted to be manually rotated, a pinion adapted to be driven by said clutch member,

a gear meshing with said pinion, gear oonnections between said gear and said piston, and means for locking said clutch device with said pinion when rotated in one direction and to release said clutch device from said pinion when rotated in the opposite direction, substantially as specified.

31. In a pump, the combination with a cylinder, a piston adapted to reciprocate t erein, a piston rod and a rack connected to said rod, of a pinion meshing with said rack, a train of gearing operable to rotate said pinion in one direction to operate said rack and thereby said piston to deliver fluid from said pump, an independently operable gear for driving said pinion in the opposite direction to restore said piston to its starting point, and a single actuator for driving said train of gearing and said last-named gear.

32. The combination with a member to be rotated, of a rotatable power element, In testimony whereof I have signed my 10 -means to connect the member and, the elename to this specification, in the presence ment for rotation in one direction, and a of two subscribing witnesses, on this 13th gearing connection between thebmember gnfd day of January A. D. 1915.

a the element to rotate the mem er at a i T ferent speed in the other direction, when ALLEB BOWSER' the direction of rotation of the element is Witnesses: changed and when the speed of the element J R. MATLAOK, remains constant. Q. J. ROHLMAN.