US1176208A - Rack-and-pinion mechanical movement. - Google Patents

Description

H. A DESPAROIS.

RACK AND PlNlON MECHANlCAL MOVEMENT.

APPLICATION FILED APR.5. 19l3- RENEWED DEC. 27. 1915.

1,1 76,208., Patented Mar. 21, 1916.

4 SHEETS-SHEET l.

5 2a i 1 5 a wwd Tm: coLuMnm PLANOGRAPH co. WASHINGTON, u. c.

H. A. DESPAROIS.

RACK AND PINION MECHANICAL MOVEMENT.

APPLICATION FILED APR. 5. ma. RENEWED DEC. 27, 19:5.

Patented Mar. 21, 1916.

4 SHEETSSHEET 2. 4-7

THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. C

H. A. DESPAROIS.

RACK AND PINION MECHANICAL MOVEMENT.-

APPLICATION FILED APR-5.1913- RENEWED DEC. 27. 1915.

Patented Mar. 21, 1916.

4 SHEETS-SHEET 3- WM wow THE COLUMBM PLANOURAP" (10., WASHINGTON, D. C.

H. A, DESPAROIS. RACK AND PINION MECHANICAL MOVEMENT.

APPLICATION man APR.5. 1913. RENEWED 05c. 27. 1915.

4 a m. 5 A

5 4 D s 4 i1 3 9 w. 4 p a J- "n at l, 7 w a 2 m. w 4. I. 5. I 1! I. wa 8 a a O 2 I: 2 6 2 7 n 1 M, m a I c 1 HARRY ARISTIDE DESPAROIS, OF MONTREAL, QUEBEC, CANADA.

. RACK -AND-PINION MECHANICAL MOVEMENT.

measuring pumps, as described in the present specification and illustrated in the accompanying drawings that form part of the same The invention consists essentially of the novel construction and arrangement. of

parts whereby a drawing member is reciprocated during thecontinuous revolution of an actuating member in one direction.

The objects of the invention are to increase the elficiency of measuring pumps, to facilitate the operation thereof, and, generally, to provide a pump of simple, cheap and durable construction.

In the drawings Figure 1 is a side elevation of the pump. Fig. 2 is a plan view of the top. Fig. 3 is a vertical sectional view of the operating part of the pump broken away and showing the means for operating. Fig. 4 is a vertical sectional view of the operating part of the pump on the line AB in Fig. 3. Fig. 5 is a side elevation of the operating part showing the sleeve partlv broken away. Fig. 6 is a cross-sectional view on the line CD in Fig. 5. Fig. 7 is a vertical sectional view of the sleeve showing the' operating pawl, latch and stops.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings 1 is the pump proper standing on the base2 and having a piston or drawing member operating therein of a suitable make and not shown or described herein, said piston having a rod 3 projecting upwardly therefrom into a cog bar 4 and being suitably secured to said cog bar. Said cog bar 4 extends upwardly centrally above the table 5, the latter being immediately above the delivery faucet 6. It will be thus seen that, in order to operate the piston of the pump and deliver liquid to the faucet (3. the cogbar 4 must beoperated verticallv and for this purpose the cog'bar is shown in the form of Specification of Letters Patent. P te te Man 1, Application filed April 5, 1913, Serial No. 759,164. Renewed December 27, 1915.

Serial No. 68,943.

piston rod hole 8 and projecting from the side wall thereof adjacent to the bottom end the boss 9, said brss being pierced for the locking bolt 10 spring-held to its inner position by the spiral spring 11.

12 is a wall adjacent to the top of the sleeve 7, having an opening 13 through which the-cog bar 4 projects.

14 is a ball race in the outer side of the wall 12 surrounding the opening 13.

15 is an outwardly projecting flange adacent to the top of the sleeve 7 and immediately beneath the external thread 16 of said sleeve.

17 is an annular row of teeth immediately under the wall 12 and pointing downwardly.

18 is a ring encircling the opening 13 .and having a correspondingpart 19 to the ball race ll inclosing with said wall the ball bearings 20.

21 is a suitable spring on top of the ring 18.

22 is a' cap having its flanged wall corresprndingly threaded to the external thread 16 and mountedon the top of the sleeve 7, having a central cog bar opening therethrough and engaging said spring 21.

23 is a ring encircling the outer wall of the sleeve 7 below the flange 15, said ring having teeth 2-l on the'underside thereof.

25 is a pivoted stop secured in suitable lugs on the sleeve 7, intermediate of the height thereof and extending through the wall of said sleeve and having the operating arm 26.

27 is a fixed stop higher up in the sleeve 7 and in vertical alinement with the stop 25.

28 is a base flange standing on the table 5 and inclosing the lower end of the sleeve 7.

29 is a lug projecting laterallv from the foot of the cog bar and preferably forming part thereof.

is a pivotsecured in the lug 29 and carrying thereon the bill-shaped pawl 31, said pawl springing to its upper position 4 and, in the extreme upper position of the cog bar 4, engaging one of the set of teeth 17 and turning said sleeve 7.to the extent of one tooth.

32 is a latch similar to .the latch in a door and spring held to its outer position and mounted in one sideof the foot 29 and, in the extreme lower position of the cog bar engaging the inner end of the locklng bolt '10 and, by reason of the greater strength'of the spring on the latch 32, than the spring on the bolt 10, forcing said bolt outwardly against the inward pressure of the spring 11 and thus locking the sleeve underthe shoulder 83 of the base flange .28, as well as locking the cognbarby bringing the latch 32 under the stop 34, said stop 34 being pivoted at 35 in the sleeve wall and havingan operating arm36 offset at the upper end and extending through the arc-shaped slot 37 at said endso that the stop 34 may be thrown aside and leave a free path for the ring 23 insuring the rotation of, said I sleeve wlth said ring on the turning of the gear wheel 42, and yet permitting the free vertical movement of said. sleeve through said ring. It'will now be seen that, on turning the hand .wheel 41 the latch 32 may be cleared of all stops to its upward movement, thus 7 allowing the cog bar-theextrenielimit ofits vertical movement. 7

.44 is the gear chamber casing supported atithe upper end of the frame 39 and having a cog bar opening through the top thereof, a division wall 45 intermediate of the height thereof through which said cog bar extends and .an annular slot 46 in the wall thereof,

. into which said ring 23 extends.

47 are fixed vertical plates extendingbetween the wall. 45 and the top of the easing. 44, one on :each side of'lthe cog .bar 4.

'48 are the main operating gearsfixedly mounted on: the .shaft 49, the latter being journaled in the. plates. 47- and projecting outwardly through the wall ofthe casing 44. 50 isa. crank handle rigidly mounted on the outer end of the shaft 49.

"51 are gear wheels fixedly mounted on V the shaft '52, the latter being journaledin the plates 47 above the shaft.49.f

53 are pinions-rigiclwith'the gears 48 and coacting with the gears 51 on the operation K of the crank handle 50. V

54 IS a driven gear wheel mounted on the shaft55, the lattjer'being journaled in the fixed plates 47 on the opposite side of the cogbar, said gear 54 coacting with the toothed side of said bar in the raising. and lowering of the pump piston. V v

56 is a shaft journaled in the plates 47 at the rear side of said cog bar and having the 62 passing through the eye 60, consequently,

on the raising of the sleeve 7, tl 1eplates6l will be tilted on their pivot 55 in one direction and on lowering-said sleeve 7. ,theywill be tilted in the other direction. The spring 58 pressing against the eye 160Ih'oldsfthe plates steady ineachposit-ion.

62'are gear wheels turning onjshaftlfifi, the I latter being, secured in the platesg61 adjacent to the upper, ends and 'in Ithelower position of the. sleeve, saidjge'ars'62 ,eeacting with the gear wheelsj51. V f

64 are gearwheelsturning ,on theQShaft 65, secured'in the lower portions of ,lthefpla-te's 61 andinthe upper position of thesleeve", coacting with the gear wheels, 48 for the urpose of bringing the cog bar to its lower positionjafter being raised through, thereaction of the gear wheels 62and 51. V

66 are'pinions mounted on the same shaft as the driven gear 54 and coacting with the gear 64 fixed with the ,shaftf65,;thereby completing the train of gears from theoperating gears 48 to the driven gear 54injt-helower position of the sleeve 7.

- 68 are pinlonsmounted on the same shaft as the driven gear and coa ctingwithkthe pinions 69 fixed with the gear wheels .62: and completing the train of gears toflthedjriven gear 54 in the upper position oft heshaftn 69is a spring under the sleeve'Tand resiliently supporting said-sleeve fro nthe table 5 and surroundingthe rod 3. 1

In the operation of this'rna'chine'V-themain shaft carrying the'lmain operating gears ,is turned by, hand or power as maybe found most convenient, usually it'will be'donefby electric or other power, though where there is only occasionaluse of the pump it will-be operated by hand with the crankhandle as shown in the drawings. The rotation of the main shaft turns the, two operating gears mounted thereon which carry the main op- V eratlngpmions. The. secondary operat ng bar. The cog bar is the stroke. The ring from 7 wheel gear coacts with the sets of gears at the upper ends of the tiltingplates while the main operating gear coacts'with sets of gears at the lower ends of the tilting plates, according to the position of the tilting plates. These sets of gears carried by the tilting plates are so arranged in relation to the operating gears as to drive the cog bar downwardly at much quicker speed than ordinarily, a very important feature, as it'very'much facilitates the operation of the pump. The sleeve or tube 7 surrounding-the cog bar is the controlling member of the positions of the tilting plates and the raising of said sleeve tilts the plates, in order to bring the lower gears inmesh with the main operating gears and thus reverse the direction of rotation of the driving gear which coacts with the cog actuating member as the foot of the cog bar carries a spring latch and also a spring pawl, both of which members respectively affect the raising of the sleeve. The spring pawl engages the annular row of teeth at the upper end of the sleeve at the completion of afull stroke, which say for instance is for the delivery of one gallon of liquid. This pawl, during the operation of lifting the sleeve, turns the said sleeve to the extent of one tooth markingsay one gallon of liquid drawn. The connecting rod from the ring immediately under the cap of the sleeve tilts the tilting plates and the spring surrounding the pintle extending from a fixed bearing holds said plate tilted until the downward stroke is completed, then the sleeve moves downwardly and the rod pulls the tilting plates to their other position ready for the upward which the said rod extends does not rotatewith the sleeve, but on account of the ball bearings between itself and the inner wall near the upper end the friction is reduced to a minimum and consequently the sleeve will turn easily. The machine may be set for a predetermined number ofgallons by turning the hand which operates the ring encircling the sleeve or tube, as for instance, if it is required to pump twenty gallons the sleeve is turned to the extent of twenty teeth and works back to zero by the upward and downward movement of the cog bar, as, at the termination of each upward stroke the sleeve is turned one tooth, therefore there will be twenty gallons pumped by the time it reaches zero. So soon as the sleeve reaches zero the latch at the bottom of the cog bar slides under the pivoted stop immediately thereabove and, at-the same time, engages the locking bolt in the sleeve and shoots said bolt under the shoulder of the flanged ring on the table, thereby also locking the sleeve to its lower position.

It will be thus seen that the same operation may be carried on'from time to time,

reciprocating member and according to the different quantities which are required, and, in this connection, it may be said that any mechanic or electrician skilled in the arts may. devise attachments suitable for shutting off the power on the latch and locking bolt reaching their locked positions. In order to measure a smaller quantity, say for instance a quart, the pivoted stop immediately above the latch is moved to one side to allow the escape of the latch therebelow. The bar, as soon as the power has been applied, will move upwardly and stop at the first pivoted dog thereabove and the same operation occurs if, for instance, one half a gallon is required, except that the pivoted dog intermediate of the height of'the sleeve will be moved by the operator from the path of the latch and the said latch stopped at the fixed stop above. The same operation of lifting the sleeve occurs following the engagement of the latch with one or other of these stops.

This invention may be applied to many different kinds of pumps, and it is, of course, obvious that a suitable form of indicator will be applied to the sleeve to point out the number of teeth within the sleeve in order to facilitate the operation of the aforesaid hand wheel in turning said sleeve.

What I claim is 1. In a rack and pinion mechanical movement, the combination with the casing carrying a gear box at the upper end thereof, a reciprocating member operating in said casing, a rod extending upwardly from said reciprocating member and a cog bar at the upper end of said rod and having a lug therefrom, of a gear mechanism having a tilting member affecting the driving gears, a rotative. member encircling said cog bar and operated thereby, and a non-rotative member operated by said rotative member and operatively connected with said tilting member.

2. In a rack and pinion mechanical mov ment, the combination with the rying a gear box at the upper end thereof, a reciprocating member operating in said casing, a rod extending upwardly from said a cog bar at the upper end of said rod and having a lug therefrom, of a gear mechanism having a tilting mechanism affecting the driving gears, a rotative member encircling said cog bar and operated thereby, and normally locked at zero position, means for setting away zero position and a non-rotative member connecting said rotative member with said tilting member for bringing the said rotative member back to zero.

3. In a rack and pinion mechanical movement, the combination with the casing carrying a gear box at the upper end thereof,

a reciprocating member operating in said casing, a rod extending upwardly from said casing carre p oca ngm mbe and a peg e e th upper end of saidrod and having a lug therefrom, of a gear mechanism having a tilting mechanism affecting the driving gears, a sleeve encircling Said cog bar and lifted thereby, a ring Within said sleeve I spring cushioned atthe upper end thereof,

Qo pies of this patent may be obtained for lt ng me ha sm zafiec n bar having teethatth e upper end i nular rowand engaged by saidcog bar for rotatingsaid sleeve, a IIOIIfI'OtflCiVB ring mounted on roller bearings Within said sleeve and suitably cushioned, a latch mech-. anism at the lower ends of said cog bar and sleeve, an external gear mechanism atthe upper end of said sleeve for rotating' the latter and a connecting rod joiningv said ring to said tilting mechanism.

Signed at the city or Montreal, inthe Province of Quebec, Canadathis 24th day of February, 19l3. I

HARRY ARISTIDE DESPAROIS.

Witnesses: V

E. L. MAR'r J. McGEn.

five cents each, by addressing the Commissioner of Patents, washingtomnc. i

h r Yi-n gears, a rotatlvesleeve encircl ng said cog n an an,-

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