US507582A - William e - Google Patents

Description

5 Sheets- Sheet 1 WI El I PUMP (No Model.)

No. 507,582. Patented Oct. 31,1893.

5 SheetsSheet 2.

(No Model.)

W. E. GOOD.

PUMP.

Patented Oct. 31, 1893.

lays/iron.-

(No Model.) 5 Sheets-Sheet 3. W. E. GOOD.

PUMP.

No. 507,582. v Patented Oct. 31, 1893.

(No Model.) '5 sh e ets-Sheet 4.

W. E. GOOD.

PUMP. No. 507,582. Patented Oct. 31, 1893.

(No Model.) I r 5 Sheets-Sheet 5.

W. E. GOOD.

PUMP. v No. 507,682. Patented Oct. 31, 1893.

I l l l Inf/156656:

' UNTTE STATES Fries.

PATENT WILLIAM E. GOOD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE SOUTHWARK FOUNDRY AND MACHINE COMPANY, OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 507,582, dated October 31, 1893.

Application filed August 15, 1892. Serial No. 443.146. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM E. G001), of the city and county of Philadelphia, State of Pennsylvania, have invented a certain new and useful Improvement in Pumps, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a part of this specification.

to My invention relates to the construction of pumps, particularly of apparatus for pumping water or similar fluids, although some features of my invention are applicable to apparatus for pumping or compressing air or gases.

The object of my invention is to provide valves operating upon the admission and delivery ports of the pump which will operate in such a way as to permit a considerable increase in the speed at which the pump can be run; and which also are so constructed as to minimize the injury and want of efficiency due to obstructions getting wedged in between the valves and their seats.

The new devices by which I secure the above noted advantages, and some others which will hereinafter be described will be best understood as described in connection with the drawings in which they are illustrated, and in which 0 Figure 1 is a side elevation of the upper part of a vertical pumping engine showing the valve actuating mechanism which I prefor to employ. Fig. 2 is a perspectiveview of a part of the valve actuating .mechanism.

5 5 Fig. 3 is a vertical section through the pump proper; Fig.4aplan view of one of the valves; Fig. 5 a longitudinal section through the valve on section line 1-2 of Fig. 4.; Fig. 6 a crosssection through the valve and valve seat; Fig.

7 a view illustrating a modification in a part of the valve actuating mechanism shown in Fig. 1; Fig. 8 aside elevation of the pumping engine showing still another modification of the valve actuating mechanism. Fig. 8 isa diagram showing a point in the motion ofthe crank-shaft at which the valve begins to move. Fig. 9 is a front elevation of the pumping engine shown in Fig. 8 partly shown in section on the line x-sc. Fig. 10 is a front view showing a modified construction of pump, and Fig. 11 a vertical section on theline y y of Fig. 10.

A indicates the framing of the pumping engine which is placed as shown over a well B in which the pump proper stands.

C is the steam cylinder of the engine, D the main shaft, E the crank on the main shaft,F the connecting rod connecting the crank D with the piston rod, extending from the steam cylinder to the pump, or rather-,1 should say, that the piston rod of the steam cylinder is connected with the crank, because in order to clear the main shaft, the piston rod of cylinder C is provided with a plate F at its end, which is connected by rods F with a plate I F which in turn is secured to the end of the piston or plunger rod N of the pump.

Referring now to the mechanism foractuating the valves (see Figs. 1 and 2) G is alever pivoted at one end to a pin f secured to the connecting rod F, and at its other end suitably supported as by a link G from the frame of the engine. Pivotally secured to a suitable point on the lever G is a connecting rod G the free end of which is secured to a lever arm G depending from a rock shaft G Y which shaft is supported in suitable bearings on the frame and is provided with arms G and G extending out in different directions and provided with pins 9 which outer grooves H H on sliding cross-heads H which are sup- 8o ported on suitableguides and to which are attached the valve rods II which operate the pump valves. The grooves H H on the cross-head H consist of a circular part H having the same radius as the arm G or G and a portion H which is preferably substantially at right angles to the direction of the valve rod I. By this arrangement it will be seen that the reciprocating motion of the arms G and G only causes the cross-head to move 0 when the pin 9 is acting against the portion H of the groove; the pin moving through the portion H backward and forward without moving the cross-head, and without actuating the valve connected with it.

The mainfeature of the above described device consists in the combining with the connecting rod F of the lever G and of mechanism connected and operated by a pin in said lever for actuating the valves." In many cases it is desirable that the attachment of the lever G to the connecting rod should be made at a point somewhat to one side of the rod; such an arrangement is shown in Fig. 7, where the pin fis shown at the end of a projecting finger F extending out from the connecting rod F.

While I prefer in my constructions to use the valve actuating mechanism described above, or one of a similar character, practically the same motion can be given to the valve rods by the modified device shown in Figs. 8 and 9 in which the arm G attached to the rock shaft G is connected with a projection 0 extending out from an eccentric ring 0' working on an eccentric O secured to the shaft D. In this construction the shaft G is in its connection to the cross-head Hand valve rods I identical with the construction previously described. The valve rods I I are connected, one with the admission and the other with the discharge valve or valves of the pump, the admission valves being indicated by the letter L and the delivery valves by the letter L. These valves are slide valves moving over admission ports J and delivery ports J on valve seats provided on the pump casting; the valve in each case being situated 011 that side of the port toward which the water moves, and in each case having a backbearing M so situated as to permit the valve to move off from its seat for some distance (see Figs. 3, 4, 5, 6,10 and 11). It will be seen that by thus constructing and arranging the valves they partake of a double nature, for while they are essentially slide valves, they are also, to a certain extent, clack valves.

Now the valve actuating mechanism is set in such relation to the motion of the engine, and particularly to the crank on the main shaft, that the valve is not moved by it until after the crank has passed its center and moved for some distance away from it. Thus in Fig. S 1 have indicated a portion of the crank pin path from w to to through which the crank passes before the valve actuating mechanism actuates either the delivery or inlet valves. As a result of this the plunger indicated by the letter N is in motion before the valves are opened. The plunger as shown in Figs. 3 and 11 moves in the chambers J and J and it will be seen, for instance, with reference to the chamber J that as the piston moves down admission valve L, so to speak, will be sucked off of its seat, moving forward until it rests against the back bearings M, the water then flowing into the chamber J through the openings made between the valve and its seat by these movements, but this movement of the plunger is, of course, very gradual, and sufficient water can enter the small cavities thus formed. After the crank has passed the point to the pin g of the arm G comes in contact with the portion H of the groove in cross-head H moving the cross-head downward, which acting through the rod I moves the valve L downward, thus opening wide the ports of the admission valve seat. The valve being wide open at the time the plunger is moving with the greatest rapidity, and closing gradually as it passes this point until just before the downward motion of the plunger ceases, the valve considered as a slide valve is again closed, and only open to the extent in which it acts as a clack valve. During the downward motion of the plunger the valve L remains closed; the pin 9 of the arm G moving backward and forward in the circular are H of the cross-head and the pressure of the water holding the valve firmly to its seat.

The action of the delivery valve L during the upward motion of the plunger in chamber J is exactly like that of the valve L during the downward motion of the piston or plunger, the valve L being first forced from its seat by the pressure of the water expelled by the rising plunger, it is gradually opened and gradually closed, so that considered as a slide valve it is entirely closed before the plunger reaches its highest point, and in its capacity as a clack valve also remains firmly seated during the downward motion of the plunger.

It will be seen that by the construction I have described there is little or no frictional resistance to the motion of the slide valves which are always raised from their seats before they are moved longitudinally to open or close the valve. The frictional resistance being merely that of the valve against the back bearings M, with which their surfaces contact, may be made small as may be desired. It will also be readily seen that by this arrangement the motion of the valve to and from its seat is so slight that there is little or no chance of cracking or breaking the valve, as so often happens with clack valves. In fact, a pump equipped with valves constructed and operated in accordance with my invention can be run at almost any desired speed without injury to its valve mechanism.

It is not unusualin pumps for obstructions to get permanently or temporarilylodged between the valves and their seats. In order to minimize the trouble and risk arisingfroin this cause I construct my slide valves of a series of partsZ l, &c., secured so that they will move to and fro together, but each free to move independently to and from their seats; thus, in Figs. 4, 5, and 6, the independent sections 1 are provided with registering perforations Z through which pass a portion of the valve rod I of smallerdiameterthan the hole Z the sections being held in place by means ofjam nuts Z Z. This construction insures simultaneous longitudinal movement while permitting each section 1 to move to and from its seat independently so that if an obstruction gets beneath one section lthe remaining sections of the valves can seat themselves. To secure proper alignment of the valve sections they are cast or provided with end sections 1 forming irregular joints as indicated at Z Z with each other, said joints insuring that if the valve sections do have an independent motion it will be uniform and not tend to jam the different sections together, and I also prefer to form abutments Z above and below the perforations Z through which the binding rod I passes.

In case of double acting pumps having chambers J and J I prefer to arrange the valves and valve seats as indicated in Figs. 3 and 11, that is to say, with the admission port and valve of one chamber on the same side and preferably in line with the delivery port and valve of the other chamber, and by thus placing the valves L L of the chambers J J I am enabled to connect and operate them by a single valve rod I, the two valves being connected as shown by a rod Iwhich may be a continuation of the valve rod I. This is ad'- visable, since as will be readily seen the motion of the two valves with respect to the ports which they operate upon is exactly the same; the admission valve of the one cylinder opening at exactly the same time and to the same degree as the delivery valve of the other chamber. In this construction the bottoms of the receiving chambers indicated by K and K are of course connected together as by a forked casting P (Fig. 10), a similar forked conduit casting P connecting the chambers K and K through which the water flows into the pump, where as in the construction illustrated in Fig. 3 the chambers J and J of the pump are separated by a space J so that the plunger N passes between the stuffing boxes J 3 through the air. I preferto connect the chambers J and J by means of castings K which are separated into chambers corresponding with the admission and discharge ports 'by means of a diaphragm K, thus dividing them up and forming the chambers K and K on the one side and K and K on the other side, and I form these castings so that the chambers K and K5 will each be provided with anair chamber K at its upper portion whichwill facilitate the flow of water both in leaving and entering the pump in the well-known way.

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

I 1. A slide valve for pumps consisting of a series of separate cross-bars Z secured together as described, and so that each section can move independently to or from its seat.

2. A slide valve for pumps consisting of a series of separate cross-bars 1 having perforations 2 in combination with a rod I of less diameter than the height of the perforation Z said rod tying the sections together, while permitting independent movement to and from the valve seat.

3. A slide valve for pumps consisting of a series of separate cross-bars Z having projecting end pieces Z forming tap joints Z with similar parts of abutting end pieces, and having perforations Z in combination with a tie rod I passing through perforations Z and so curing the sections together while permitting independent movement of each section to or from their seats in the direction in which the fluid flows through them, in combination with apiston working in the pump chamber and mechanism positively actuated and arranged to actuate said valves alternately in a fixed relation with the motions of the piston and so that each valve will remain over its seat in position to close the orifice until the piston has begun its motion to suck in, or force out fluid, to or from the chamber, said valves first rising from their seats and then moving longitudinally to open the same.

5. In a pump admission and discharge slide valves L L each made of a series of sections Z independently movable to and from their seats, and each valve having back bearings placed so as to permit them to rise from their seats in the direction in which the Water flows through them, and positively actuated mechanism arranged to actuate said valves alternately, and so that each valve will remain over its seat in position to close the orifices until lifted therefrom by the incoming-or outgoing current of water.

6. In a pump having chambers J J and a plunger N admission and delivery ports J TCO J in each chamber arranged so that the ad-' mission and delivery ports of chamber J will be respectively on the sameside as the delivery and admission ports of chamber J, in com bination with slide valves L L having back bearings arranged to permit said valves to move away from their seats in the direction in which the water flows through them, said valves being secured together in pairs so that they will simultaneously open the admission port of one chamber and the delivery port of the other, and positively actuated mechanism arranged to actuate the two pairs of valves alternately.

7. In a pump the combination of chambers J J separated by a space J a plunger N working in said chambers and through said space, a series of slotted delivery ports formed in valve seats J 5 in each chamber, said delivery ports being on opposite sides of the-cham-.

' J 4 arranged in each chamber on relatively opposite sides, castings K K secured to the respective chambers registering with the-admission and delivery passages respectively,-said castings havinga diaphragmK' separating them into chambers K and K slide valves L L arrangedin pairs and. secured together so as to simultaneously open and close the admission ports of one cylinder, and the-delivery ports of the other, said valves having back bearings M arranged to permit a movement to and from their seats, and means for actu ating said valves as described. Y

8. In a pump the combination of chambers J J separated by a space J a plunger N working in said chamber and through said space, aseries of slotted delivery ports formed in valve seats J in each chamber, said delivery ports being on opposite sides of the chambers J and J, similar slotted admission ports J arranged in each chamber on relatively opposite sides, castings K K secured to the respective chambers registering with the ad missn and delivery passages respectively, said chambers having a diaphragm K separating them into chambers K and K, said diaphragm being arranged to form air chambers K in the admission and delivery conduits, slide valves L L arranged in pairs and secured together so as to simultaneously open and close the admission ports of one cylinder and the delivery ports of the other, said valves having back bearings M arranged to permit a movement to and from their seats and means for actuating said valves as described.

9 In a pump the combination with a steam cylinder of a piston rod, a crank shaft and a pump operatively connected therewith, a connecting rod joining the cross head and the crank, a lever G pivoted to the connecting rod, at points other than those at which it is pivotally attached to the cross head and crank and actuated thereby, a slide valve working over the port of the pump, and mechanism for transferring motion as described, whereby the motion of an intermediate point on the lever G may be transmitted to the slide valve.

10. The combination with a pump slide valves L L having back bearings arranged to permit them to move awayfrom their seats in the direction of the current through them a rock shaft G having lever arms G Gr arranged at different angles, cross heads H H connected with the admission and delivery valves respectively, and provided with oppositely arranged cam grooves 1-1 H as described, said grooves being each engaged by a pin from one of the levers G G and means for actuating shaft G actuated by moving parts of the pump.

11. In combination with a pumpslide valves L L having back bearings arranged to permit them to move away from their seats in the direction of the current through them, a

rock shaft G havinglever arms G5 G arranged at different angles, cross heads H H connected with the admission and delivery valves re spectively, and provided with oppositely ar- W. E. GOOD.

Witnesses:

LISLE STOKES, J. H. RUssELL.

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