US255792A - johnson - Google Patents

Description

(N0 Mmiel 3 Sheets-Sheet 1;

' D. JOHN-SON & J. P. & P. GOWAN.

PUMP. No. 255,792; Patented Apr. 4,1882.

3 Sheets-Sheet 2. D. JOHNSON & J. P. 8: F. GOWAN.

PUMP.

Patented Apr. 4, 1 882.

(No Model.)

' UNITED STATES PATENT OFFICE.

DANIEL JOHNSON, JACOB ROOWAN, AND FRANK OOVVAN, OF ASHLAND, OHIO.

PUMP.

SPECIFICATION forming part of Letters Patent No. 255,792, dated April. 4, 1882. Application filed February 17, 1882. (No model.)

1' all whom tt may concern Be it known that we, DANIEL JOHNSON, JACOB P. GoWAN, and FRANK COWAN, of Ashland', in the county of Ashland and State of Ohio, have invented a new and nsefulIm provement in Pumps; and we do hereby declare that the following is a full,-clear, and exact description of the same.

Our invention relates to force-pumps The first part of it consists in a new construction and arrangement of the air and discharge pipes in connection with the forcing-chamber and the cap of the pump with its spout. The second part consists of an improvement in the construction of the pistons.

Hitherto it has been proposed to place an internal discharge-pipe in the npperend of an ordinarylifting-pump, with a space between this discharge-pipe and the outer tube or wall of thepump for containing air, the air acting in the samemanner as the air contained in the ordinary air-chamber when under compression, andat the same time inclosing that part of the discharge-pipe about which it was held in order to prevent freezing.

The object of our invention is to provide such 'an internal discharge-pipe and external air-pipe in connection with a force-pump, whereby we are enabled to provide a very simple construction and to place the piston-rod outside of, the air and discharge pipes. -By this construction and arrangement not only'is the construction rendered more simple and stuffing-boxes avoided, but the pipes may be made smaller, and thereby the expense is lessened.

The second part of ourinvention, which relates to the pistoumore particularly, consists in formingthepistonin two parts, madeslightly tapering, and used in connection with a ring for holding the leather or other packingto the blocks, the blocks being forced together by nuts or other suitable means upon the spindle, which passes axially through them, whereby the leather or other packing is held upon the blocks without the use of nails orany such devices, and the packing may be extended at pleasure, the said packing only coming in contact with the walls of the cylinder.

In the accompanying drawings, Figure 1 to the forcing-pump and to bring the pistonrod in line with the cylinder and outside of the saidpipes,we form the forcin g-chamlber with an offset, 1), opening into the forcing chamberA a, as shown at c. The forcing-chamber is composed of cylinders with their pistons. Into the offset b, the upper end of which is cylindrical,

we screw a pipe, c, it being an ordinary iron pipe-such as gas-pipe-and preferably about two inches in diameter. Upon the upper end of this pipe is screwed a casting, g, hereinafter described. Within this pipe 0 we place a dischargepipe, d, the lower end of which opens into the chamber of the ofi'set b, and thereby is in communication with the interior of the tbrcing-chamber. The upper end of this pipe d is screwed into a continuation of the spout within the casting g, as shown in Fig. 2, and there is free passage for the water from the forcing-chamber to the spout; but the upper end of the annular space in the pipe 0 is closed to. the air. The air within this pipe is therefore held under compression when the pump is forcing the water up the interior pipe. The pipe 6 forms the barrel of the pump, and the casting g is extended up to form abearing for the handle.

The pipe 0 may be supported in a collar upon the platform, as shown in Fig. 2.

An interior discharge-pipe with ad exterior air-pipe acting as aforcing-chamberis not new; and we do not broadly claim such a pipe, our invention being limited to the described arrangement of the pipes extending from an 0dset in the forcing-chamber directly tip and connected to a casting which supports the handle, with the piston-rod passing down outside.

The advantages of this construction are that we gain, in. connection with the air-packing around the water-pipe to prevent freezing, and with the interior discharge-pipe, in which the friction is lessened, a very compact form of pump, for the reason that we are enabled to place the piston-rod outside the air-pipe and discharge-pipe, thereby greatly lessening the diameter of these pipes, and at the same time avoiding any packing for the piston rod, no packing being required, except the ordinary piston-packing. This form of the pump may be very cheaply made, and is very efficient.

The pistons which constitute the second part of our invention are shown at Figs. 3 and 4. These pistons are each of two pieces, preferably of metal. The upper one of these is shown at m and the lower at 11. They are made tapering, as shown in Fig. 4, either exactly in the form shown or in any tapering form approximating thereto, or they may be simply in the form of truncated cones, being placed with the smaller ends toward each other.

The leather packing is shown at a. It is formed of a simple strip of leather or any equivalent material long enough to go around the blocks and form a suitable joint. This packing is held upon the block by means of a ring, 1). This ring is made slightly smaller than the largest diameter of the upper block, so that it will fit upon the packingjust above the lower edge of the lower block, as shown in Fig. 4. After the packing and the ring are putin place upon the lower block the upper block is inserted within the packing and is pressed in a suitable distance to spread the packingas far as may be necessary. The blocks are bored centrally and are held together by a stem, g, which has a collar, 1, and nut 2, and by turning the nut any desired amount of compression may be given to the blocks, and they may be brought together to spread the packing, as hereinbefore explained. A series of holes is formed in the blocks of the lower piston to permit the passage of the water, and a valve, 1', is placed upon the top, covering these holes. The above description relates more particularly to the lower piston; but the upper is the same in respect to the blocks, packing, and ring.

The upper piston is of course inverted, and the blocks are not perforated. It will be observed that as the ring fits upon the smallest portion of the block, the packing upon both sides projects outward beyond it and the ring does not necessarily come in contact with the Walls of the cylinder. As the packing wears the blocks may be brought together, forcing out the packing to compensate therefor.

We do not claim broadly an internal discharge-pipe, nor broadly an air-chamber provided with a discharge-pipe with the pistonrod outside the air-chamber, such being shown in thepatent of J. Budd and D. Budd, of October 13,1863, No. 40,239.

Having thus described our invention, what we claim is- 1. A forcing-pump consisting of the cylindrical compression-chamber provided with an 0&- set, I), the pipe e, connected to said offset, the piped, arranged within the pipe 0, opening into said ofl'set and connected at its upper end with the spout 7c, the casting g, connected-to the pipe 6, and the piston-rod outside of said pipes provided with pistons, the parts being combined and adapted to operate as shown and described.

2. A pump piston consisting of the two tapering blocks, the packing, the ring, and the spindle, with means, substantially asdeseribed, for pressing the blocks together, as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

DANIEL JOHNSON. JACOB P. OOWAN. FRANK OOWAN.

Witnesses as to the signature ofJohnson:

FRANK L. MIDDLETON, DAVID E. MEAD. Witnesses as to the signatures of J. P. Gowan and F. Oowan:

J. P. DEVOR, H. S. SEE.

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