US690098A - Cut-off valve. - Google Patents

Description

No. 690,098. Patented Dec. 31, l90l.

J. H. CHAMP.

CUT-OFF VALVE.

(Application filed Mar. 19, 1900.) (N0 Model.) 4 Sheets-Sheet l.

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No. 690,098. Patented Dec. 3|, l90l.

J. H. CHAMP.

CUT-OFF VALVE.

(Application filed Mar. 19, 1900.) (No Model.) 4 Shets-Shaet 2.

- Patented Dec. 3|, I90l.

J. H. CHAMP.

CUT-OFF VALVE.

(Application filed Mar. 19, 1900.;

4 Shee\ts-Sheet 3.

(No Model.)

mLiiiiiiininir Nu. 69%,098. Patented Dec. 3|, I901. J. H. CHAMP.

CUT-0FF VALVE.

(Avnlication filed-Mar. 19, 1900.)

(Na Model.) 4 Sheets-Sheet 4.-

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.improvement in cut-off valves especially UNITED STATES JOSEPH HENRY CHAMP,

PATENT OFFICE.

OF CLEVELAND, OIIIO.

CUT-OFF VALVE.

SPECIFICATION forming part Of Letters Patent N0. 690,098, dated December 31, 1901.

Application filed March 19, 1900. Serial No. 9,192. (No modeld To all whom it may concern:

Be it known that I, J OSEPH HENRY CHAMP, a citizen of the United States, and a resident of Cleveland, countyof Ouyahoga, and State of Ohio, have invented a new and useful Improvement in Out-Off Valves, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

The object of my invention is to provide an adapted for use in the refilling of bicycle-tires with fluid under pressure; and it consists of the means hereinafter described, and particularly pointed out in the claims.

The annexed drawings and the following description set forth in detail certainrmechanism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

Figure l is a vertical transverse section through the casing of the machine, but showing in side elevation all parts of the machine inclosed by such casing, excepting the expansion-cylinder, which would be nearer to the observer. Fig. II is a rear elevation of the mechanism inclosed by the casing and showing the latterin vertical section at right angles to the section of the preceding figure. Fig. III is a detail top plan of the handle mechanism connected with the fluid supply and exhaust valve mechanisms and with the upper portion of the coin-controlling mechanism. Fig. IV is a front elevation of said members of the immediately-preceding figure, but having that portion of the front casing which carries the handle removed. Fig. V is a detail, partly in vertical sect-ion and partly in "ertical side elevation, of one of the twin valve mechanisms shown in the immediatelypreceding figure. Fig. VI is a detail in side elevation of the lower portion of the coincontrolling mechanism. Fig. VII is a top plan view of the members of the immediatelypreceding view. Fig. VIII is a detail of the back-pressure-valve mechanism, showing the valve-chamberin section and the valvein side elevation. Fig. IX is a detail, partly in side elevation and partly in vertical section, of the rear with a door a, whereby privileged access may be had to its interior.

Two upright cylinders B B are provided, the one, B, being a st0rage-cylinder of compressed carbonic-acid gas, the other, B, being an expansion-cylinder to permit the cool and condensed gas to warm and rarefy before being subject to draft for tires respectively communicating by the tubes 1) b with the pressure-regulator 0, having a gage-dial 0, under conditions adapted to automatically cause gas from the storage-cylinder to pass under a predetermined pressure into the expansion-cylinder. A tube d, provided with a strainer (Z carries the fluid from the expansion-cylinder B to the bottom of the valvecylinder e,wherein communication with tube f, connected with the central portion of said cylinder, is controlled by a valve having a tendency to be maintained in raised position by a spring, such raised position of the valve shutting off communication within the valve-chamber between said tubes (Z and f. This fluid'supply valve mechanism is a duplicate of the exhaust valve mechanism hereinafter referred to, and the interior construct-ion of each is shown by the single view of Fig. V. Said tube fdepends in the lower loop 7) below the horizontal line of the tire-feed nozzlej, which latter passes through the lower portion of the front wall of the easing A. The rear upper portion of such lower loop t' connects with the bottom of backpressure-valve chamber l,whieh chamber has its top communicating with upper loop 0, which latter empties into said tire-feed nozzlej. Within this chamber Z, thus located within the line of the passage of the fluid in outflow, is valve m, loosely fitted and allowing suffieient space between itself and the inner wall of its chamber to permit passage of the fluid between the two. This valve is cirupper loop 0.

cular in horizontal section, which sect-ion is of such less diameter than the similar section of said chamber 1 as to permit a limited quantity of fluid to pass freely between the vertical circular walls of said valve and chamber as the fluid passes from the lower to the upper portion of said valve-chamber. The valve is disconnected from'its valve-chamber and is of vertical dimension sufficient to have its side wall extend upwardly beyond the waste port n, hereinafter described. The valve is free to have movement lengthwise of the chamber and is adapted when in its uppermost position to fit against valve-seat m,

formed at thetop of said chamber, and thereby effectually out off passage of fluid into said A stem m projects upwardly from the central top of the valve and passes up into said upper loop when the valve rises, so as to insure the valve properly fitting against the valve-seat, so as to seal the latter. The side port n in the lower portion of said back-pressure-valve chamber connects with tube 10, the upper end of such tube conmeeting with the lower portion of valve-cylinder q, such cylinder q being of construction and havingan inclosed upwardly springpressed valve such as shown in Fig. V, the side portrof such cylinder q being open to the interior of the casing and acting as an exhaust.

Each of the twin valve-cylinders e and g has a pivotal angular lever of the second class whose lower portion engages with the top of a valve-stem, each such pivotal lever being adapted to be depressed by a cam carried on the lower side of horizontal slide O,such lever, stem, and cam of the supply mechanism being respectively lettered as s to, while the handle F. An arm G is fastened to said'shaft E at a point thereof between said slide-bar C and the front casing-wall, such arm being pivo'ted to the upper end of rod H, which latter has its lower end connected to angle-iron N, which latter is also connected to depending ratchet-bar J. This latter bar has vertical sliding movement in guideways c projecting horizontally from vertical web K of bracket L, fastened to the lower portion of the front wall of the casing. An arm M projects rearwardly from said web K and has pivoted to its outer extremity the bell-crank N, the free end of the horizontal arm of such bell-crank carrying the coin-plate O, the free end of the vertical depending arm of the bell-crank carryin g the hook d, upon which detachably rests the horizontal lug e,projecting laterally from the free end of the long arm of trip P. Pawl R is pivoted to said web K, so as to swing in a vertical plane in and out of engagenient with said ratchet-bar J, its horizontal arm being provided with a depending cam f, adapted to be engaged by upwardly projecting lug g on the free end of the short arm of said trip P. A dog Q is also pivoted to said web K and has its front arm h adapted to be engaged by horizontallug 7;, carried on ratchet-bar J, the rear arm j of the dog being adapted to bear down upon lug Z, projecting laterally from the short arm of said trip as the ratchet-bar completes its upward movement.

A coin-slot s is formed in the front wall of the casing and connects with a coin-chute S, the latter adapted to conduct the coin so as to discharge itself on coin-plate O.

The operation of the machine is as follows: The bicyclist removes the cap from the nipple of his tire and places his wheel on the tire-feed nozzlej, with the opened nipple fitting in the open end of such nozzle, the mouth of the latter being of size and shape adapted to effect substantially an air-tight joint with such open nipple of a wheel-tire. The bicyclist then slips a suitable coin into the slot, whence the coin passes through the coin-chute and is discharged onto the coinsplate. The latter thereupon swings downwardly and tilts thevertical arm of the bellcrank N toward ratchet-bar J, so as to cause hook d to pass from under lug e of trip P. The long arm of the trip thereupon falls of its own weight and causes lug g on its short arm to engage with cam f of pawl R, thereby causing'such pawl to disengage itself from the ratchet depresses lever s, which latter depresses the upwardly-spring-pressed valve in cylinder 6, thereby establishing communication between tubes 61 and f. At the same time with such movement of the slide 0 toward the right arm G of rock-shaft E raises rod H, which latter raises ratchet-bar J, sothat lug t" of the latter engages with arm hof the dog Q,thereby causing the remaining arm j of said dog to bear down upon lug Z'of the short arm'of trip P, so as to raise the long arm of the latter and permit hook d to automatically swing beneath lug 6, so that when ratchet-bar J again descends and releases dog Q, from pressure upon the short arm of trip P the long arm of the latter will in turn descend, and its lug e will again seat itself on hook d. Communication of from expansion-cylinder B being had with tubefby reason of said movement of slide (3 toward the right, such gas under pressure passes through lower loopt' upwardly into valve-chamber Z and thence upwardly through upper loop 0 and then downwardly into and out through the tire-feed nozzle into the nipple of the tire. The back pressure of the fluid is, so long as the wheel is in place on said nozzle, sufficient to pre- Vent the valve 722 from rising upwardly, so as to seat itself against outward passage of the fluid. The said back pressure is due to the presence of the wheel-tire on nozzle j, which pressure is sufficient to so affect the condi tions of the gas in the upper portion of valve chamber Z as to result in sufficient back pres sure against the top of valve m to cause the latter to remain in its down position, it being understood that when gas first enters said valve-chamber its pressure in the latter is slight and insufficient to raise valve m, so that it passes upwardly around the latter and thence to the tire. When the bicyclist is satisfied as to refilling of his tire, he lets go of the handle F and lifts off the wheel from nozzle j, whereupon and whereby the previous conditions will be so changed as to relieve valve m from the said back pressure of the fluid. Such valve will thereupon be immediately forced upwardly against its seat m by the fluid under pressure from below, and further discharge of fluid from out nozzlej will be stopped. The removal of the tire from nozzlej causes the gas in the upper portion of valve-chamber Z to be suddenly relieved of its said back pressure, so that valve 722 is thereby subjected to great pressure of the fluid against its bottom, while its top is relieved from fluid-pressure to such an extent as to cause it to be at once forced upwardly against its valve-seat m by reason of the then excess of gas-pressu re against its bottom relatively to the gas-pressure against the top. As soon as the bicyclist lets go of the handle F the weight of rod H and its ratchet-bar will be sufficient to overcome the inertia of slide 0, and rock-shaft E will be automatically turned to the left, thereby releasing lever 19 from cam n, so that the upwardly-spring-pressed valve in cylinder 2 will cut off communication between tubes d and f, and cam Q) will depress lever s, which latter will depress valve-stem 25, thereby causing the upwardlyspring-pressed valve in cylinder q to be depressed,so as to open communication between tube 1) and waste-port r. This latter communication will then permit the fluid under pressure beneath valve m to pass out through port 12 into tubep'and thence through cylinder q out through waste-port '7'. Valve 112 thus being relieved from fluid-pressure below automatically drops of its own weight into its lower and open position. When the ratchet-bar J has dropped into its lowermost position, its lug t" will have released arm h of dog Q from causing the remaining arm j of such dog from bearing upon lug Z of trip P. The long arm of such trip will therefore have dropped, so as to seat its lug 6 upon hook d of the bell-crank N, and also so as to cause lug g of the short arm of such trip to release bearing upwardly against cam f of pawl R. Such pawl will thereby have automatically rejoined engagement with the ratchet-bar, so, as to positively lock the latter against upward movement until the drop of a coin shall again operate the coin-controlling mechanism. The different members of the machine are thereby restored to their respective positions,such as they were assumed to be in at the beginning of the described operation.

The back-pressure valve m and its coworking members fulfil the office of automatically and absolutely rendering it impossible for a plurality of tires to be charged with fluid by the introduction into the machine of but a single coin. The construction is thereby such that the machine must receive a coin for every tire that is supplied with fluid from it, and communication between the expansion-cylinder and the back-pressure-valve chamber is cut off before such baclcpressure valve chamber is placed into communication with the exhaust, and when this latter communication takes place the back-pressure valve and its chamber become idle until the operation of the bicyclist hereinbefore described is repeated. The construction and relative proportions of theintermediate members between the exterior operating-handle of the machine and the fluid-supply and exhaust valve mechanism are such to work together toward the accomplishment of the above-described result that a coin must be slipped in the slot for each tire supplied with fluid from the machine. To such end the arm of the handle -shaft and its two engaging lugs on the slide whose cams depress the spring-pressed valves,respectivel y of the fluid supply and exhaust mechanisms are so relatively proportioned that there is a decided lost motion between said arms and lugs. The construction of said fluid supply and exhaust valve mechanisms is also such that the pressure of the fluid coworks with the springs of the upwardly-pressed valves of said two mechanisms to maintain such valves respectively closed against passage of fluid except when and as desired in the normal operation of the machine.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means covered by any one of the following claims be employed.

I therefore particularly point out and distinctly claim as my invention-- 1. The combination of a chamber located angularly to the horizontal and having its lower portion provided with a fluid-inlet passage and with a fluid-waste passage, and having its upper portion provided with a fluidoutlet passage, a valve in said chamberadapted when seated upwardly across said outletpassage to close the latter, said valve being of weight to drop from its said seat and there by automatically open said outlet-passage when there is no fluid under pressure in said chamber, a valve located in said fluid-inlet passage and'controlling flow of fluid therethrough into said valve-chamber, a valve located in saidltlnid-waste passage and controlling flow of fluid therethrough from said valve-chamber, substantially as set forth.

2. The combination of a chamber located angularly to the horizontal and having its lower portion provided with a fluid-inlet passage and with a fluid-Waste passage, and having its upper portion provided with a fluidoutlet passage, a valve in said chamber adapted When seated upwardly across said outletpassage to close the latter, said valve being of weight to drop from its said seat and thereby automatically open said outlet-passage when there is no fluid under pressure in said chamber, a valve located in said fluid-inlet passage and controlling flow of fluid therethrough into said valve-chamber, a valve located in said fluid-waste passage and controlling flow of fluid therethrough from said valve-chamber, movable mechanism constructed by single movement to engage or disengage said inlet and waste passage valves and thereby maintain one of said passages closed while the remaining passage is open, substantially as set forth.

3. The combination of a valve-chamber having a fluid inlet passage and a fluid-waste passage and a fluid-outlet passage, a valve located in said chamber and controlling said outlet-passage and adapted to be open when there is no fluid underpressure in said chamber, valves respectively controlling said inlet and waste passages, movable mechanism adapted by single movement to operate said two latter valves to cause the one to be closed while the other is open, substantially as set forth.

4. The combination ot' a rock-shaft and a slide-bar adapted to engage with each other,

said slide-bar having two cams, two valves each having a stem, two levers respectively adapted to engage with said two stems and also respectively adapted to engage with said two cams, substantially as set forth.

5. The combination of a slide-bar having two lugs and two cams, a rock-shaft having an arm looselyfitted between and adapted to engage with said two lugs, two valves each havinga stem, two levers respectively adapted to engage with said two stems and also respectively adapted to engage with said two cams, substantially as set forth.

6. The combination of the slide-bar having the two lugs and the two cams, the rock-shaft having the arm loosely fitted between and adapted to engage with said two lugs, the two valves each having the spring-pressed stem,

the two pivotal angular levers of the second class respectively adapted toen gage with said two stems and also respectively adapted to engage with said two cams, substantially as set forth.

7. The combination of a fluid-passage having valve chamber Z formed longitudinally therein, one end of which connects with a fluid-reservoir, the other end of which connects by upper loop 0 with feed-nozzle j, said valve-chamber provided with port at having independent valve-controlled communication with the waste, valve m loose within said chamber Z and havinglongitudinal movement therein and adapted to fit against seat m formed at end of such chamber next to said upper loop 0, substantially as set forth.

8. The combination of handle F, rock-shaft E, arm D secured to said shaft, slide 0 having cams o a), pivotal levers s s, valve-stems t If each connected with an upwardly-springpressed valve, substantially as set forth.

9. The combination of handle F, rock-shaft E having arm D, slide 0 engaged by-said arm and carrying cam '0, pivotal lever s engaging with stem 25 of an upwardly-spring-pressed valve, cylinder e containing said valve, tube d connecting the lower portion of said valvechamber with expansion-cylinder l3, tubef connecting the central portion of said valvecylinder with cut-off chamber Z, substantially as set forth.

,1( The combination ofhandle F, rock-shaft E carrying arm D, slide 0 engaged by said arm and carrying cam 12, pivotal lever 3 engaging stem t of an upwardly-spring-pressed valve in cylinder q, tube 19 connecting lateral port n between the inlet and outlet ends of cut-off chamber Z with the lower portion of said cylinder q, waste-port r communicating with the central portion of said cylinder q, cut-off valve m loosely fitting in said chamber l and adapted to fit against seatm formed at the outlet end opposite to the inlet end of said chamber Z, substantially as set forth.

11. The combination of depending tube f, lower loop 1', feed-nozzlej, upper loop 0, valvechamberlbetween said lower and upper loops, valve m loosely fitted and having longitudinal movement within such chamber, the latter having lateral port at between its opposite inlet and outlet ends, such port connected with the waste under control of a valve having no mechanical connection with said valve m, substantially as set forth.

Signed by me. this 16th day of March, 1900.

JOSEPH HENRY CHAMP.

Attest:

D. T. DAVIES, THOMAS B. HALL.

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