US23937A - Pump-box - Google Patents

Description

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JOHN MUNSON, OF SAN JOSE, CALIFORNIA.

PUMP-B OX.

To aZZ whom it may concern:

Be it known that I, JOHN MUNsoN, of San Jose, in the county of Santa Clara and State of California, have invented a new and useful Improvement in Pump-Boxes; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a vertical section of a pump cylinder with its boxes and valves which are also bisected, fr, m, Fig. 2, indicates the plane of section. Fig. 2, is an external detached view of the upper box. Fig. 3, is a horizontal section of the lower one taken in the line y, y, Fsl Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in a peculiar manner of constructing the boxes and arranging the valves therein as hereinafter fully shown and described, whereby the boxes may have their packing secured to them with the greatest facility and the valves kept in proper position and working order.

The invention also consists in a peculiar manner of attaching the lower box to the lower end of the pump cylinder.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a pump cylinder. B, is the l upper and C, the lower box, which is permanently secured in the lower part of the cylinder. Both boxes are constructed precisely similarly, a rod D, being attached to the upper box B, which slides or works as usual up and down within the cylinder.

The boxes B, C, are constructed as follows z-An annular ring a, forms the bottom of each box, the lower part of each ring fits snugly in the cylinder, as may be shown at a', and the upper portion a, is considerably smaller in diameter than the lower portion so as to leave a groove or recess Z), on a horizontal annular surface b, which forms the connection between a', and a, as shown clearly in Fig. 1.

The low'er parts a, of the boxes are perfectly circular, but the upper parts a, have two indentations or curvatures c, o, to receive bolts CZ, CZ, which pass up through the horizontal parts Zi, of the rings a, at two opposite points, the heads of the bolts being at the under sides of said parts b.

plates g, two to each, placed at opposite points on them, said plates extending upward at the outer side of each bolt d, and forming a support for traverse plates h,

through which the bolts cZ, cZ, pass, one near each end, the plate h, being secured in proper position by nuts z', on the upper ends of the bolts eZ, cZ. In the sides of the plates h, at

their centers, ,recesses y', are made to receive guide rods Z3, 7c, which are attached to valves Z, which rest on the upper surfaces or edges of the parts a, of the rings a. The valves Z,

are simply circular plates the lower surfaces of which may have packing m, as shown in the lower box C, in Fig. 1, or the under surfaces may be ground and made to fit snugly the upper edges of c, as shown in Fig. 1. The edges of the valves Z, have recesses a, made in them at opposite points of their peripheries to receive the bolts eZ, eZ.

On the horizontal parts Z9', of the rings a, of the boxes, packing 0, is placed. This packing may be an annular piece of leather or other suitable material and the packing of the upper box B, is of suflicient width to permit of being bent upward and fitting water tight between the cylinder A, and band e. The packing it will be seen is secured between the lower edges of the bands e, and horizontal parts b, of the rings d, the nuts z', by being properly turned binding the band e firmly down on the inner edge of the packing.

It will be seen from the above description that the valves Z, are guided both by the bolts (Z, (Z, and the rods Zo, Zc, without a lower bridge or traverse bar, and consequently they cannot become deranged or rendered inoperative by getting out of proper position. The packing 0, also is firmly secured in position, and the band e, is prevented from casually turning by the cleats f, at' the inner side of the band, between which cleats the bolts CZ, pass, the traverse plate ZL, also into the under side of which the upper ends of the upright plates g, g, fit, assist the cleats f, in keeping the band e, in proper position. Each part therefore of the box and valve have a mutual dependence one on the other, and a very simple economical and eicient device is obtained for the desired purpose.

In the lower part of the cylinder A, there is a ange a* secured or attached. This ange is recessed at two opposite points b", bx, see Fig. 3, to allow the ends of the plate L, to pass up Within the cylinder. The upper edge of the flange ax, is of spiral or inclined form, and the box C, is secured to the cylinder by passing its plate 7L, up through the flange ax, and then turning the box so that the ends of the plate It, will rest on the upper edges of the flange, said edges in consequence of being inclined planes, drawing the packing o, snugly against the bottom of cylinder A.

I would remark that all the parts With the exception of course of the packing may be of cast metal. The rod D, is attached to the traverse plate h, and may be of Wood or metal.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is,

l. Constructing the pump boxes of the rings cz, bands e, provided With the uprights g, g, and the traverse plates h, when the boxes thus constructed are provided with the Valves Z, fitted thereon and arranged substantially as herein shown and described.

2. I further claim securing the lower box C, in the bottom of the cylinder A, by means of the traverse plate 71 on said box, and flange ax, secured to the inner side of the cylinder substantially as described.

JOI-IN MUNSON.

Vitnesses C. WV. POMEROY, G. I-I. LELAND.

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