US1574274A - Pump - Google Patents

Description

Patented Feb. 23, 1925.

p f 1.5mm UNITED" STATES PATENT OFFICE.

CHARLES W. a. ALLENDER, QF STEAMBOAT SPRINGS, COLORADO.

PUMP.

Application filedMay 9, 1925. Serial No. 29,245

and an object of the invention is to provide a device of this kind which may be employed to advantage in removing obstruclions within pipes associated with a wash basin toilet or the like.

It is another object of the invention to provide a device of this general character including a handle member which also constit-utes a pump proper.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved pump whereby certain important ad vantages are attained and the devicerendered simpler less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafterhe definitely claimed. 7

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, whcre1n:

Figure 1 is a view in perspective illustratmg a pump constructed in accordance with an embodiment of my invention;

Figure 2 is an enlarged sectional view taken longitudinally through the device as illustrated in Figure 1;

Figure 3 is a view in botto-nrplan of the device as illustrated in Figure 1;

Figure 4 is a fragmentary view Jartly in section and partly in elevation of t e pump piston and the rod connected therewith;

Figure 5 is a fragmentary view in perspective of the sleeve or bushing insertible within the pump cylinder provided in the handle; v

Figure 6 is a view in perspective of the lower or inner end portion of the handle.

it disclosed in the accompanying drawii-ngs, C denotes a cup-like member substantelly a e e; in term and whi h has neck 3 i peripheral portion defined an out- This cup C is preferstanding flange 1. ably formed of suitable rubber compound. The axial center ofthe cup C is provided with a port 2 and extending outwardly from said central portion of the cup 0 and concentric to the opening 2 an elongated tube or neck 3 preferably integrally formed The wall of the tube or at a point closely adjacent to its with the i cup C.

junction with the cup C is provided thercthrough with an air inlet t outward flow through said inlet 4 being prevented by a flap valve 5 suitably attached to the inner face of the wall of the sleeve 3.

Snugly insertible within the tube or neck 3 is an end portion of an elongated handle i'i iember H of wood or other preferred material, said inserted or inner end portion of the handle member H being provided with an elongated recess or here 6 whereby said end portion of the handle member l-l constitutes a cylinder. The handle member H when inserted within the tube or neck 3 has its inserted end substantially in contact with the central portion of the cup C and said inserted or outer end of the bore 6 is open tion between the chamber or cell 7 of the cup C and the bore 6; The wall of the bore orcylinder 6 at the inner or inserted end portion thereof is provided with a cut out portion or recess 8 which is adapted to regist-er with the port 4: so that said port lwill have ready communication with the bore or cylinder 6 and saidcut'out portion or recess 9- is of such dimensions to afford no hindrance or obstruction to. the requisite functioning of the flap valve 5.

I also prefer to snugly engage within the bore or cylinder 6 a sleeve or bushing 9 the outer end of which being defined by an outstanding flange l0 which overlies the inner or inserted end of the handle "member H and said sleeve or bushing't) isprovided in its wall with the cut out portion or recess 11 which registers with the out out portion or recess 8 inthe wall of the bore or cylinder (3.

The applied sleeve or bushing 9 provides a liner for the bore or cylinder 6 whereby the ef iciency of the sleeve is materially in creased. particularly when the handle inember H is: formed of wood. This sleeve or bushing 9 operates efiectively tofprevent undue swelling of the wall of the here or y er and also P t he h le so that the port 2 affords direct communicaall) member H to be produced from a low grade of wood.

Vol-king within the bore or cylinder 6 is a piston P of desired dimensions and of preferred material, said piston having axially disposed therethrough an end portion of a rod 12, said rod being firmly attached to the piston P by the nuts 14 threaded on the rod 12 above and below the piston P. It is preferred that inwardly of each of the nuts 1% there be provided a washer 15. The upper nut 14 and washer 15 also operate to hold in desired position with respect to he piston P the leather cup 16 which has direct contact with the inner side wall of the bore or cylinder 6 or more particularly the ap plied sleeve or bushing 9.

The rod 12 extends freely through the atrial center of the handle member H and has its outer end secured or clamped to the knob 17 by the nuts 18 threaded on said rod and contacting with the knob 17 from above and below.

hen the piston P is retracted by pull upon the knob 17 air will be drawn into the bore or cylinder 6 in advance of the piston P and at the same time flow will be closed through the port 2 by the flap valve 19 fixed to the inner face of the cup C. As the piston is moved forwardly, as by pressure upon the knob 17, flow through the port 4' will be closed and the air will be forced within the cup-like men'iber C through the port 2 and as said cup-likefmember C is properly positioned with respect to the pipe to be o ened, the resultant air pressure will effect the desired removal of the hindrance or obstruction within such pipe. I

As is particularly illustrated in Figure 2 of the drawings, it is to be noted that as the piston P moves towards the member 7 it is .pr e-ted from passing over the out out portion or recess 8 by contact of the knob 17 with the outer end of the handle H. This assures the-piston being in the most effective position when outward pull is imposed thereon.

From the foregoing description it is thought to be obvious that a pump constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible of some change and modification without departing from the principles and spirit the eof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as l1ereinafter claimed.

I claini:

A pump of the class described comprising, in combination, a cup-like member having a port through its central portion, an outstanding neck carried by the central portion and surrounding the port, a flap valve secured within cup-like member for closing flow through the port, a handle having an end portion insertible within the neck, said inserted portion of the handle being pro-- vided with a bore open at its outer end so that the port in the cup-like member affords direct con'm'iuni'cation between the chamber of the cup-like member and the bore of the handle, a piston working within the bore of the handle, an operating rod for the piston extending freely through the handle, and an operating knob carried by the outer end portion of the rod,- the inserted end of the handle having a cut out portion affording communication with the bore of said handle, th wall of the neck being provided with a restricted port adapted to communicate with the out out portion of the handle, the knob carried by the rod contacting with the outer end of the handle to stop the movement of the piston in a direction toward the cup-like member befor the same passes over the cut out portion in the inserted end portion ofthehandle.

In testimony whereof I hereunto atrix my signature.

CHARLES lV. G. ALLENDER.

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