US867932A - John weeks - Google Patents

Description

No. 867,932. EATENTED 00T. s, 1907.

J. WEEKS.

EoRcE EUMPAN'D SIMILAR APPARATUS.

. APPLIUATIUH FILED MAR. 5, 1907.

@VWM/naw@ i UNITED STATES JOHN WEEKS, or LocUsT VALLEY, NEW YORK, `AssieNoR or ONE-HALE'ro DUDGEoN, or LooUsT VALLEY, NEW YORK.

PATENT OFFICE.

HENRY C.

FORGE-PUMP AND s'IMIL'AR APPARATUS,

No. 867,932. Y i

To .all whom 'it may concern:

, -Be it known that I, JOHN WEEKS, a citizen of the United States, and aiesident of Locust Valley, Nassau county, Long Island, State of New York, have invented certain new and useful Improvements iii Force-Pumps and Similar Apparatus, of which the following is `a. specification, reference being had to the accompanying drawing, which illustrates a vertical sectional view `of one form of pump in which my invention may be embodied. l

In the use of force pumps, it is a matter of frequent occurrence that the amount ef water desired differs at different times. Take, for example, the case of a steam fire engine. If the fire is a trivial affair, the full capacity-of vthe engine might deliver so much water that the damage therefrom would exceed the fire damage; on the'contrary, if the fire be a dangerous one, the

utmost amount of water that the engine can deliver may be required, and later on, when the' re is practically under control, awrelatively smalldelivery is all 1 that will Abe desired',fwith which to extinguish the upon the machinery, 'coal consumption, etc., are likewise of consequence.

It is the purpose `of this invention to provide aA force pump simple and inexpensive Vin construction and of 1 1 relatively light Weight, in which the reciprocation of a singlepiston may, by proper manipulationA of co-acting parts, effect three differing degrees of pumping action. Referring to the drawing, A represents the main `casting of'the structure, B a cover plate adapted to i supply. f4 0 the base piece A.

A C is the' intake port from any suitable source of liquid D is the reservoir inthe upper part of thestructure. E is the pump chamber for 'the big pump, F the pump l chamber forthe little pump.

G is a piston reciprocated by a cross-head H,Iactuated by a cam I, on a cam shaft il,l which may be` rotated by a pulley lH, on the end of the shaft J, or in any other preferred manner. 'The part which acts as the piston for the little pump is a mere Vcore K, left standing in the center of the force chamber for the-big pump.

VL lis theintake waterway for the big pump. It connects with the reservoir D throughy a valve M, which may beneficiallyA be relseated by a spring N. The ports tlirough which the liquid passes from the reservoir into the waterway L are shown at O, O. They are made in a bonnet P, as usual. i

Specification of Lettrs'Patent. Application iiledMarcli 5.1907. Serial No.. 860,741.

Patented Oct.v 8, 190,7.

Q, is the waterway for supplying liquid to the pump chamber F of the little pump. The water reaches this waterway by passing through a valve R, which may beneficially be re-seated by a spring S, and is provided with a perforated bonnet T, substantially the same as above described. The upwardly projecting stems U 4 and V, respectively of these two valves, are provided:

with laterally projectingwebs W and Y, respectively,

whereby the stems are guided as they rise and fall through the'respective waterways. l

The delivery ports from the two .pump chambers are ,through the valve b, re-seated by a spring c, into the delivery waterway` d, which is common toboth pumps, at the end of which any desired pipe connection can be made by means of threads e. Any other means of attachment may be employed. The small 4pump g, .refseated by'fa spring h, delivering also-into the waterway d. AThe two valves b andy g are supported upon screw-plugs, 'i'and j .respectively, which are i threaded into the bottom of the main casting, so that upon unscrewing thesef" plugs, the valves and their springs may be dropped out ofth'ejapparatus for irispection and repair.

k is a hand wheel, threaded into a lug l, cast on the cover plate B. The hand Wheel is provided with a spindle m, which projects downwardly through the and is adapted tov'engage with the upwardly extending stem U of the valve M, so that upon running down the handwheel, the lower end of the spindle will'press against the upper end of the stein and permanently hold the valve off its seat, but when elevated, so that it does not engage with the stem of thevalve, the latter will be uncontrolled and acts as on the intake stroke, but closing and preyenting`-its passage'on the forcing stroke. l

o is a hand wheel similar to that described above, the stem of which is threaded inte a lug p cast on the engages with the stom V of the valve R, the same as described above.

The two pumps may .beneficially be provided with ypacking as shown' in the drawing. ,It does not require description.' I I prefer to use the hard packings preferred sealingmeans may be employed.

the apparatus is desired, the two hand wheels, k and 0, are run backwardly, in. other words, into a position of the valves M and R, as illustrated at the left hand an ordinary check valve, permitting the flow of li uid.

cover plate B and provided with a ,spindle q whichV shown, but cup4 packing, ring-packing, or anyotherk The'operationis as follows: When the full power of as followsLWaterway a delivers from the big pump delivers through the waterway f, provided with a valve reservoir and through the upper part ofthe bonnet P,

in which they do not engage with the stems-U and V side oi the drawing, so that those valves act as ordinary check valves. The piston G being now reciprocated, it will be. readily understood that both pumps Will receive their supply oi' liquid from the reservoir, which is irrturn supplied through the inlet C, and consequently the full capacity of both pumps is utilized by the forcing of the liquid from both pump chambers through the delivery waterway d, which is common te both, and thence to the point of use. It it is desired to reduce the amount oi liquid pumped, then the hand wheel lc being run down, its spindle?"v impinging upon the upper end U of the valve M, will permanently hold it off its seat, so that the liquid taken into the pump chamber of the large pump upon. the upward movement of thepiston G, Will, upon its downward movement, be expelled rnot through the delivery port a to the common waterway d, but through the now open check valve M and back again into the reservoir, from whence it came, so that the large pump will effect no water delivery, merely churn the' water back and forth from and to the reservoir; the small pump, however, being still in operative condition, will deliver the liquid pumped 'by it through its delivery waterway f and the main waterway d' to the point oi use. In this way the smallest amount oi liquid that the apparatus will deliver is pumped. lf it be desired to have an intermedia-te amount of water delivered, then the little pump will be cut out `by running down the hand Wheel o, so that its s tem q shall impinge upon the upper end oi the stem V of the valve R, and hold it off its seat, the same as. above described relative to the other valve, which latter is putin operative condition by running baekwardlyits hand wheel k, relieving the stem U of its valve M from control so that it shall act as an ordinary check valve. When the parts are in lthis position, obviously the large pump alone will be in operation, the small pump .being eut out. V

It Will thus be seen that under my invention with the same apparatus and by the reciproeation oi' a single piston, with an exceedingly small number of moving parts and exceedinglysimple, hence inexpensive and durable construction, I produce a f oree pump having three markedly different capacities: first; that oi both pumps combined; second; that of the small pump, the larger one being cut out; third; that of the larger pump, the smaller one being cutout.

It will be obvious to those who are familiar with such matters'. that the details of construction described and illustrated herein may be very extensively departed from and yet the essentials of' the invention be retained. In fact l ha vc noty attempted in the drawing to illustrate any existingforms of force pump, nor have l incorporated in the drawingy certain ieatureswhich are usually present.. These have been omitted for the sak(I o1` elcaruess. lt will also' be obvious'that the size relation between the two pumps may be such as preferred, and that there is no necessity for a. reservoir so large as that shown. Indeed, there may be no reservoir, se called, all that is necessary being some suitable liquid supply for the pumps; and as stated, 'the delivery waterways and the method ol making connections at` both sides of the pump may be such as preferred. Also au air chamber and other devices may be embodied, il desired.

. l claim:

'into and out ot' operation at will.

L. In hydraulic apparatus of the class stated. thc combination of two pumps ot" different capacities. one located within the piston of tite other, a single piston thc` reciproeation ot' which operates both pumps, waterways l'or .supplyingliquid to aud conveying` it from both pumps, a valve set iu the intake waterway of each pump and means actuated from t'hc'cxt'erior 'ot' the apparatus and adapted to co-act with each of said valves, whereby they muy he controlled and the pumps which they respectively supply 'thrown into and out of operation at wilh 3%, In hydraulic apparatus ot' the class stated. the com bnation of two pumps of different capacities. waterways for supplying liquid to and conveyingit from both pumps` a valve set in the intake waterway ot' cach piuupmud means actuated from the exterior-ot theiapparatus and adapted to co-act with euch ot' said valves. whereby they may he controlled and the pumps which they rcspectivctv supply thrown into and out of operation :it will.

l. ln hydraulic ,apparatus of the class stated. the combination of two pumps of ditierent c: iacities. :i single. reciprocating part or piston which actuales hoth pumps. waterways for supplying liquid to and conveying it from both pumps, a valve set in the intake water ay ol cach pump and means actuated from the exterior' of the apparatus and adapted to (fonct with each of said valves, whereby they may be controlled and the pumps which they respectively supply thrown iuto and out of operation at will.

In testimony whereof I have signed my name to this specification in the presence of two subscribing' witnesses.

JOHN WE1-ENS.

Witnesses FRANK 1. Deputies, SILAS D. WRIGHT.

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