US405680A

US405680A - rider

Info

Publication number: US405680A
Authority: US
Publication date: 1889-06-18
Anticipated expiration: 1906-06-18

Description

2 Sheets-Sheet 1.

(No Model.)

T. J. RIDER.

PUMP.

No. 405,680. Patented June 18, 1889.

r a c a C 3 Uma/vwo@ M MW.,

(No Modrel.) 2 Sheets-Sheet 2.

T. J. RIDER.

PUMP.

No. 405,680. Patented Jun@ 18, 1889. f

N. PETERS. Pham-Lithograph@ wmhingtnn. 11C.

UNITED STATES PATENT OFFICE'.

THOMAS J. RIDER, OF NEV YORK, N. Y., ASSIGNOR TO C. H. DE LAMATER OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 405,680, dated June 18, 1889.

Application filed December 15, 1888. Serial No. 293,726. (No mmel.)

T all whom may concern.-

Be it known that I, THOMAS J. RIDER, aciti- 1zen of the United States, residing in the city of New York, State `and county of New York,

have invented a new and useful Improvement in Pumps, of which the following is a specification, reference being' had to the accompanying drawings, which form a part thereof.

My invention has special reference to single-acting pumps of small size, such as are commonly'used with hot-air engines of the Ericsson type.

The general objects of my invention are to improve the construction, and thereby the operation, of such a pump, to simplify the 2 is a top view of the bonnet or upper head.

Fig. 3 is a horizontal section on the line 3 3 of Fig. l. Fig. al. is a top or plan view of the bottom section. Figs. 5, 6,and 7 are enlarged detailed views of the air-cock attachment,

Fig. 6 being a bottom view of the valve attachment and Fig. 7 a sectional View on the line 7 7 of Fig. 5.

Similar letters of reference designate corresponding parts in all the drawings.

A is the body-piece of my improved pump. This is formed in a single casting, and is preferably made of iron. It is provided with a chamber to `receive the barrel of the pump. At the ends of this chamber are two cylindrical projections or collars c, a, which are bored, soas to receive and fit accurately the separate barrel or lining-piece B. This barrel is made preferably of material which will not be corroded by the liquid which is pumped. The barrel is made somewhat longer than the distance over the collars. After the collars a a of the body-piece have been properly bored t-he barrel B is inserted in the body-piece, as shown in the drawings, and the ends of the barrel are expanded into the collars and the extreme ends of the barrel are turned back upon the edges of the collars a a, thus securing the barrel firmly in its position. Between the barrel or lining-piece and the outerbodypiece is an open spaceor passage c, extending from one collar to the other and partly encircling the barrel and connected with the side passage E.

C is a valveless piston constructed in any suitable way so as to accurately iit the barrel in which it works, being made preferably with a cup-leath er packing, as shown, and having its metal portions made preferably of brass or other non-corrosive metal.

D is the piston-rod, which is also preferably made of non-corrosive metal.

The bod y-piece of the pump is constructed with an enlarged space or chamber l) at its lower end. This is the suction-valve chamber in which the suction-valve worksA d is a port or opening in the body-piece connectin g the chamber h with a discharge-passage E in one side of the body-piece. At the opening' between the port and the dischargepassage is a discharge-valve e, which cont-rols the opening or passage between these two parts. The valve e is a rolling cylindric valve. l

f is a bridge which stops the upward motion of the valve e. The discharge-passage E is formed partly by the barrel or liningpiece, and is connected with the passage c, encircling the rest of the barrel. At its lower end the discharge-passage E is widened to afford ample space for the discharge-valve e to work in and free passage for the water around that valve. At its upper end the dischargepassage E opens into the upper end of the barrel, as shown.

F is the final discharge-opening, through which the contents of the pump are forced upon the upstroke of the piston. This discharge-openin gis placed directly opposite the upper end of the discharge-passage E, and around it the body-piece is shaped to form a flange G, by means of which the pump is attached to a hot-air engine, the discharge-opening F being adapted to connect with the opening into the water-jacket of such an engine.

ll is an air-cock; attachment, which is connected with the interiorof the body-piece A IOO IOy

between the suction-valve and the dischargevalve of the pump. This attachment consists of a middle VTf-shaped portion, which is connected by a suitable pipe-nipple with the body-piece A, as shown in Fig. l. An ordinary air-cock 0 is screwed into one end of thisT-shaped portion, and a bib-nozzled aircock p into the other end. The bib end of the cock p is provided with a screw-thread, and onto this end a valve attachment r is screwed. (See Fig. 5.) The valve attachment has a central valve-chamber with an opening into the external atmosphere. This opening is fitted with an inlet check-valve s, as shown in Fig. 5. Both the bib end of the cock p and the upper side of thwvalve .s are made with slots or saw-cuts, so that when the valve s is forced up against the end .of the cock p the air-passage will not be closed. I-prefer to place this cock attachment H just below the discharge-valve, making it connect with the port CZ, as shown in` Fig. 1. It is evidont that the cock p, with its check-valve, may be separated from the cock o and connectedwith Athe suction-pipe of the pump, insteadof; beingvv` connected as shown in the drawings.

I is lthe bottom section of the pump, and is adapted to be attached to the lower end of the body-piece, forming in this way the lower head of the pump-cylinder. At the outer end of this bottom section ascrew-thread is provided .for thek attachment of the suction-pipe. The inner endof the bottom section forms theseat forthe suction-valve t'. The shape of this valve-seat andI of the openings between the. bottom section and the suctionvalve chamber?) is clearlyY shown in Fig. 4. The valve t' is circular or disk-shaped, and slides upon a central pin provided at its upper end with a head to act as a stop forv the valve. The. openingsv between the bottom section and the suction-valvechamber are also circular in shape, as shown in Fig. 4f, and the valve 'L' is. thus seatedat its inner edge as well as at its outer edge.

K is the bonnet .of the pump. It is fastened to vthe upper en d ofthe body-piece by a screwthread 0r .other suitable means. I prefer to employ a cup-leather packing, as shown in Fig. l, between the-bonnet and the bodypiece.

The. bonnet K is made comparatively deep. Its lower end 7c is made to iit the piston-rod closely, and forms a guide for that-rod.l The upper portion of the` bonnet is made cupshaped to form an oil-receptacle m. At the upper part of ythe bonnet is the extra guide Z, whichis supported by the ribs n. (See Fig. 2. Any numberof ribs fn. can be employed as may seem best. As shown, thebonnet is made in single piece orl casting, preferably of brass or some other non-corrosive metal.

Theoperation of my improved pump is as follows: Atthe upstoke of the piston water is drawn :iny through the suction-valve to iiil the cylinder. At its downstroke the water `the pipe is inserted in a pail of water.

in the cylinder below the piston is. forced through the port cl and discharge-valve e into the discharge-passage E, filling also the passage c. At the next upstroke of the piston water is again drawn in through the suctionvalve to iill the cylinder below the piston. At the next downstroke the water in the cylinder below the piston is forced through the port d and discharge-valve e into the discharge-passage E and passage c, and the water in the passages E and c is forced over into the barrel above the piston. At the next upstroke of the piston the water in the barrel above the piston is finally discharged through the opening F and more water is drawn into the cylinder, as already explained.

These pumps are frequently placed in positions high above the water, so that it is necessary to prime them in order to catch the water at the beginning. To enable the pump to catch the water at as great a distance as `possible withoutpriming, it is constructed in the manner shown,so that the clearance or space between the suction and discharge valves and the pistonin its lowest position is reduced to a minimum butwh en the pump will not catch the water without priminga .pipe is attached to the cock 0, and the other endof The cock 0 is then opened and the pump started. In this way sufficient water is drawn into the pump from the pail to displace all the air and to fill the spaces and clearances in a very short time and with very little trouble. The

pump is thus made to catch the water-in the suction-pipe, after which the cock ois closed.

When the work of pumping is finished, it may be desirable to clear the pump of water, as in a case where the pump is exposed to severely-cold weather, and there would be danger of the water freezing if left in the This can be done by opening the cock 0 and turning the engine over two or three times, which willclear it of allthe water itr contains.`

If at any time there should be a water-- hammer in the pipes connected withv the pump, this can be easily stopped or remedied by opening the cock p and working the engine, whereby sufficient air can be drawn `in through the valve s to form a vcushion in the.

air-chamber, with which such a pump is always provided, and -to thus do away with the water-hammer,

The extra guide Z in the bonnet operates, in connection 4with the lower guide k, to 'guide the piston-rod accurately and prevent its having a lateral motion, and thus to guide the ITO igo

obviates all extra friction and reduces the work in pumping a given quantity of water to a minimum. At the same time the parts of the pump are closely and compactly arranged, and thus the size and weight of the pump, relatively to its capacity, are largely redueed,se curing economy and convenience. In my improved pump also the clearance-that is, the space between the suction and dischargevalves and the piston when in its lowest position-is made very small.

By constructing the body-piece in the manner shown and described and employing a separate barrel or lining-piece the cost of making the pump is materially reduced. Hitlierto in casting the body-piece of a pump in a single casting it has been difficult for the melder to construct his core, as the core was necessarily crooked, small, and irregular, and it was difficult to make it sufficiently strong to keep its proper form, and as it was also difficult to make the core with sufficient vents to allow the gas formed in the casting to escape, it was also a difficult thing in such a case to remove the core and core-irons after the castin g was made. In my improved pump the body-piece is of such a construction that the core required in casting it is substantially solid and continuous and simple in its form. Each core, therefore, is easily and economically made. In my body-piece, also, there is no unnecessary or waste metal, and as the body-piece can be made of cast-iron, the working parts only being made of noircorrosive metal, the pump can be made in a very solid and substantial manner, obviating liabilities of being broken in shipment or from any excess of pressure which may be brought upon it in actual use, and yet the cost of the pump be considerably reducedB In fitting the barrel into the body-piece no long portion of the body-piece has to be bored and iitted to the barrel, but only the collars a a. In practice the body-pieces are cast with cores through the collars ce a of a diameter slightly less than the diameter of the smallest size of barrel. The holes in these collars are then bored to fit whatever size of barrel is to loe employed in the pump, the other parts of the body-piece being cast of a size to be suitable for any of the usual sizes of barrels. Thus the same size of body-piece can be employed for any of the usual sizes of pumps, and without any appreciable waste or added expense of metal in either the larger or the smaller sizes. A single size of pattern and core-boxes will be all that is required to make the body-pieces for the different sizes of pumps. This will simplify and cheapen the manufacture of the pumps. Moreover, the use of but one size of casting prevents confusion in the casting-storehouse, as any casting does for any size of pump.

Another advantage of my invention is that several sizes of pumps can be used with the same engine without changing the engine in any respect, for my pump is constructed in such a manner that the distance from the center Vof the piston-rod to the flange where the pump is fastened to the engine will remain constant, though pumps having barrels or cylinders of various diameter may be substituted for one another, depending upon the location of the pump and the height it is to pump.

Again, my improved bonnet, with its lower guide k and extra guide Z, controls the motion of the piston-rod accurately, causing it to move backward and forward in exactly the same path without lateral motion. decreases the wear upon the packing and keeps the packing tight for a much longer time. The motion of the piston is also accurately controlled, and the crampingl of the piston in the barrel, which happens when the piston-rod is not accurately guided, is prevented, and the friction between the piston and the barrel is materially reduced. In this way the wear upon the piston itself and upon the barrel is reduced. The packing on the piston will also last longer` The barrel of my improved pump can be made of much thinner metal than is usually employed, thereby decreasing the cost of the pump, especially when the barrel is made of brass or other non-corrosive metal, which is costly. These advantages are of great importance in pumps which are used with hotair engines, where themotion of the piston is rapid and its stroke is long, requiring a long working-barrel.

B y forming the passage c around the barrel less metal is used in making the pump and the water is made to circulate around the barrel, thus keeping the temperature of the barn rel the same on all sides and preventing its unequal expansion and contraction, which would cause leakage.

Some parts of lmy invention may be used without others or in other combinations. I therefore do not limit my claim to a combination of all the parts shown.

lVhat I claim as new, and desire to secure by Letters Patent, is

l. The combination of a body-piece formed in a single casting and provided with a chamber to receive a barrel and with a collar at each end of the chamber to support the barrel, the collar being integral with the bodypiece, and with a discharge-passage on one side connecting the two ends of the chamber and with a discharge-opening at its upper end, a separate barrel fitted and supported in the collars, a valveless piston, a piston-rod passing through the head of the pump, a suc tion-valve opening into the lower end of the body-piece, and al discharge-valve in the discharge-passage, substantially as shown and described.

2. The combination of abody-piece formed in a single casting, a separate cylinder in said body-piece, a valve'less piston working in thel cylinder, a piston-rod passing through a stuffing-box, a bottom section secured to the lower end of the bodypiece, a suction-valve seated on the bottom section, a discharge-passage in This IOO

one side of the body-piece oonneetingthe two ends of the body-piece, ft discharge-Valve in the discharge-passage, zt discharge-opening at the upper end of the body-piece, an air-oook connected with the lower end of the bodypiece, and t second oook provided with an inlet cheek-valve at its outer end and connected with the lower end of the body-piece between the suction and discharge Valves of the pump, substantially is shown and described.

3; In a pump, an air-oook provided with an inlet cheek-valve at its outer end and oonneeted with the cylinder of the pump below the diseliarge-valve, substantially as shown and described.

4. The combination of abodypieee formed in a single casting, zt separate barrel supported in the body-piece, it Valveless piston Working in the barrel, a piston-rod, a bonnet in the top of the body-pieoe composed of a stuffing-box and an extra guide for the pistonrod, and an oil-receiver between the stui'lingbox and the guide, a. bottom section secured to the lower end of the body-piece, a suction- Vtlve Seated on the bottom section, @suction- Va-lve chamber in the lower end of the bodypiece, a discharge-passage in one side of the body-piece opening` into the upper end of the barrel, a. port connecting the lower end of the vdischarge -passztge with the suction -Valve chamber, a rolling oylindrio Valve 'at the opening` between the discharge-passage and Ehe port, anlair-eoek connected with the por a second air-cook also connected with the port and provided with an inlet cheek-valve at its outer end, a discharge-opening at the upper end of the body-piece on the side opposite the discharge-passage, and t flange around the dise-liotrge-opening` for attachment to the engine, all substantially as shown and described.

THOMAS J. RIDER.

VitneSSQS:

ROBERTN. KENYON, EDWIN SEG-ER.

n Letters Patent No. 405,680.

C c di s... C O

` Oountersigned It is hereby certified that Letters Patent N o. 405,680, granted June 18, 18.89, upoi of New York, N. Y., Was erroneously issued to 0. H. De Lamater, as assignee of the entire interest in the patent; that said Letters Patent should have been issued to William .De Lamater and Leander A. Betta, both of New York, N. Y.; said De Lamater and Bevin being owners of the entire interest in said invention as shown by assignments the application of Thomas J. Rider, for an improvement i1 of record in this office; and that said Letters Patent should be read With this eorreetion therein that the same may conform to the record of the ease iu the Patent Oee.

Signed, eountersigned, and sealed this 25th day of June, A. D. 1889.

CYRUS BUSSEY, Assistant Secretary of t/Le Interior.

[SEAL] ROBERT J. FISHER,

Acting Commissioner of Patents.