US102664A

US102664A - douglas

Info

Publication number: US102664A
Authority: US
Publication date: 1870-05-03
Anticipated expiration: 1887-05-03

Description

' thtttd @States @anni @twine JOSEPH w. DOUGLAS, Or MIDDLETOWN, cONNnorIcU'r,-Assicuon .fro w. e B. DOUGLAS, or .SAME PLAGE. Leners Baten: No. 102,664, daad my 3, 1870.

The Schedule referred to in thesev Letters Patent and making part of the same.

To all whom 'it may concern: f

Beit known that I, JOSEPH W. DOUGLAS, of Middletown, in. the county of Middlesex, and State of Connecticut, have invented a new and useful Improvement in Pumps, of which'the following is a full, clearfand exact description, reference being had to the accompanying drawing forming part of this specification, and in lwhich Figure l represents a longitudinal view of a pump constructed in accordance with my invention, and

Figure 2, a central longitudinal section ofthe same, taken atright angles to iig. 1. e

Figure 3 is a back view of one of the valves of the pump, in illustration of its attachment by means of bent pins or `hooks, undv Figure 4, a transverse section through the line :z: x in iig. 2, showing a modification of the pin attachment of the valve or valves.

Similar letters of referenceindicate corresponding parts.

This invention, which is applicable to either suction or force-pumps, or to common lift-pumps, consists in a novel attachment of the valve to its place in the pumpcylinder or valve-box, connected therewith at either or both ends of the pump, by means of a Wire pin or pins, looselyprojected.through holes in the flexible portion of the v tive, and serving as a free hinge or fulcrum for the valve to swing on, with every facility for detaching said valve when required, by slipping it from off the said pin or pins, that may either be straight or in the form of hooks.b

Also,'the invention includes a certain arrangement of side-plates, to facilitate access to the valves.

By these improvements, the cost of constructing the pump is lessened, by dispensing with joints at the ends of the pump-cylinder or barrel, inasmuch as the cylinder and Valve-seats at the two .ends thereof may be cast in one piece; also, leather is economized inv the'construction of the valves, and the liability to leakage, or imperfection in the Working of the pump, reduced.

Referring to the accompanying drawing- A represents the cylinder or barrel of the pump, and B the inlet and C the outlet-valves thereto, said valves being arranged at opposite. ends of the cylinder, or in boxes, D D, connected'therewith.

Access is had to the valves by means of side-plates,

E E, arranged to fit on or over the mouths of the boxes D D, and secured by means of hinged bolts, F

F, entering slotsfor openings a a in the' ends of the .of the cylinder for such purpose, and cheapening the 4construction of the pump.

Furthermore, the liability to leakage and imperfec-- tion in the working of 'the pump is reduced; also, I economize the leather in the construction of the valves, and facilitate their attachment and' detachment by hitchiug or hinging the valves, in a free or looseuna'nner,'on` pins arranged to project through hole'sin the leather, and which form the working pivots or fulcra of the valves.

Thus, as represented in figs. 2` and v1.1, either valve may be hung on a straight wire pin', H, passed, so as to run in front and in rear, through slits or holes, o c,

made in the leather d of the valve, -and said pin, with the valve on it, let at its endsinto grooves e made in the endsv of the valve-box, in such a manner as that, on taking oft' the side-plate which covers the latter, the valve and its hinge-pin may be drawn out, and, when necessary, said pin drawn out of the leather. Or, instead of there being a single straight pin, bent pins or' hooks, H H, as shown in igs. 2 and 3, may be used,the same being attached to theplate that covers the valve-box, and made to project-through holes punched 'in the leather, -which establishes a like loose attachment of the valve, free from any binding or bearing down of the leather at the hinge-portion of it, and allowing of the valves ready detachment on liftingof theside-plate which covers the mouth ofthe vvalve-chamber or box. lVhat is 'here claimed, and desired to be secured by Letters Patent,lis-

The valves of a pump suspended by pins passing through holes in the exible portion, whereby the advantages of a swinging joint are combined with the iiexibility of the material, substantially as set forth.

JOS. W. DOUGLAS.

. Witnesses:

DANL. W. RAYMOND, GEO. M. SMITH.