US776318A - Duplex steam-pump. - Google Patents

Description

No. 776,318. PATENTED NOV. 29, 1904. G. A. GOYNE.

DUPLEX STEAM PUMP.

APPLICATION FILED APR. 1, 1904.

no MODEL. 4 SHEETS-SHEET 1.

No. 776.318. PATENTED NOV. 29, 1904. G. A. GOYNB.

DUPLEX STEAM PUMP.

APPLICATION FILED APR. 1, 1904. no MODEL 4 SHEETS-48KB?! 2 PATENTED NOV. 29, 1904.

C. A. GOYNE.

DUPLEX STEAM PUMP.

APPLIOATION FILED APR. 1, 1904.

4 SHEETS- .fizwzzfor VII/1% mtnems'em no menu.

PATENTED NOV. 29, 1904 C. A. GOYNE.

DUPLEX STEAM PUMP.

1m MODEL.

APPLIGATION FILED APR-1. 1904.

4 SHEETS-SHEET 4.

7,22% v a! jzwzzz /4/ M 212022102. 690 077 No. 776,318. Patented November29, 1904.

NITE STATES FFICE.

CHARLES A. GOYNE, OF ASHLAND, PENNSYLVANIA, ASSIGNOR OF THREE- FOURTHS TO GOYNE STEAM PUMP CO, OF ASHLAND, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

DUPLEX STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 776,318, dated November 29, 1904.

Application filed April 1, 1904:. Serial No. 201,128. (No model.)

T (117/ whflm it y ing its valve-seat. Fig. 4: is a detail plan view Be it known that I, CHARLES A. GoYNn, a illustrating a set of valves for one of the cylcitizen of the United States, residing at Ashinders, together with their operating mechan land, in the county of Schuylkill and State ism. Fig. 5isatransversesectional view taken 5 of Pennsylvania, have invented new and usethrough a valve-chest of one of the cylinders. ful Improvements in Duplex Direct-Acting Figs. 6, 7, and 8 are detail views of one of the Steam-Pumps, of which the following is a slide-valves. Fig.9isadetailperspective view specification. of one of the cut-ofi valves. Figs. 10 and 11 This invention relates to duplex direct-actare sectional details illustrating two different 10 ing steam-pumps, and has to do more particupositions of the slide-valve of one of the cyllarly with an improved construction of the inders with relation to the ports in said cylmain valve and of a cut-off valve cooperating inder, and Fig. 12 is a perspective diagramtherewith and to improvements in the mech- 'matic view illustrating the connections beanism for operating said main and cut-ofi' tween the pistons and the valves.

5 valves. Referring now to the drawings, 1 2 indicate,

The objects had in view are to insure a unirespectively, the two cylinders of the steam formly full stroke of the piston, to provide for end of the pump, and 3 4 the pump-cylinders, an absolute cut-off of the steam'at any desired which are respectively connected to their point in the stroke of the piston and indesteam-cylinders, as usual, by means of the 20 pendently of the movement or length of stroke bars 5. As the invention has only to do With of the main valve, whereby the amount of the steam end of the pump, the following desteam supplied may be varied in accordance scription will be confined thereto, and as the with the speed at which the engine is running, cylinders 1 2, together with their respective and to provide for causing the steam entervalve mechanisms, are identical in construc- 5 ing through respective cut-off ports of the tion a description of one will apply equally main valve to pass only in given directions to well to the other, and this description I will the steam-cylinder. now proceed to give. 7 5

The above constitute the main objects of the Referring to Fig. 2, it will be seen that the inventi0n,in the attainmentofwhich,however, cylinder 1 is provided with a steam-chest 6,

3 various novel details of construction and comin which the main valve 7 is located. 8 indibinations and operations of parts are involved cates the valve-seat, which, as usual, is prowhich cannot be intelligibly set forth in genvided by a flattened portion formed on the uperal terms at this point, but a knowledge of per side of the cylinder, and from this valvewhich can be clearly gained from the detailed seat lead the ports communicating with the 3 5 description following, taken in connection interior of the cylinder. According to this with the accompanying drawings. invention I provide two ports leading to each That which I claim as my invention will be end of the cylinder. These ports are indiclearly indicated in the claims following the cated, respectively, by 9 and 10 and 11 and 12. detailed description of the invention. The ports 9 and 11 are relatively wide as com- 4 To the end that my invention may be clearly pared with the ports 10 and 12 and commuunderstood by those skilled in the art to which nicate with the interiorof the cylinder at some it relates I have illustrated the same in the acdistance from the respective ends thereof. 0 companying drawings, in which. The ports 10 and 12 are approximately one- Figure l is a top plan view of my improved fourth of the width of the ports 9 and 11 and 45 duplex direct-acting steam-pump. Fig. 2 is communicate with the interior of the cylinder a sectional side elevation, the section being at the extreme ends thereof, respectively. A taken through one of the cylinders. Fig. 3 partition-wall 13 separates the two ports. 14, is a top plan view of one of the cylinders, showi indicates the exhaustport, which is located between and in line with the ends of the ports 9 and 11, which terminate in the valve-seat.

I have illustrated in detail the construction of the slide-valve in Figs. 6, 7, and 8 and will now proceed to describe the same. Said slidevalve is, as shown, rectangular in shape and on its upper side is provided near opposite sides with cut-off ports 15 and 16 and central of its upper side with a steam-cavity 17 for the purpose of balancing an equal area of the cut-off valve, as hereinafter explained. On the under side of the valve, as shown in Fig. 7 near what I term opposite ends of the valve, are provided elongated steam- ports 18 and 19, and these ports are separated'from each other and from one of the cut-ofi ports 15 16 by means of a partition 20, which extends diagonally across the interior of the valve from the end of one cut-off port 15 to the opposite end of the other cut-off port. The valve 7 is otherwise hollow. The provision of the partition 20, it will be seen, insures that steam entering through the port 16 can only pass out through the port 19 and steam entering through the cut-off port 15 can only pass out through the steam-port 18. The under side of the main valve 7 is also provided with an exhaust-cavity 21, which is located to one side of the longitudinal center of said valve, leaving a blank surface 22 for a purpose to be presently explained. On the top of the valve 7 and extending transversely thereof in parallel relation are guide-ribs 23, between which the cut-off valve 2 1 slides. Disregarding for a moment the provision of the cut-off valve, the operation of the main valve 7, in connection with the ports 9 and 10 and 11 and 12, will now be described.

In its position on the valve-seat 8 the blank surface 22 of the valve 7 is designed to control the openings of the narrow ports 10 12 and of the wide ports 9 11, terminating in the valve-seat, and the steam- ports 18 and 19 of said valve are designed to open communication for the passage of steam through said ports 9 11 and 1O 12. The exhaust-cavity 21 of the Valve, however, does not extend to the ports 10 and 12, and hence communication with the exhaust-port 1 1 is only afforded through the ports 9 and 11. The purpose of this construction is as follows:

Assuming the piston 25 in Fig. 2 to be moving to the right, steam will be exhausting through the port 9 to the exhaust-port 14:, the two being brought into communication by the exhaust-cavity 21 of the valve. When the piston 25 has reached a position to cover the opening of the port 9, the exhaust ceases, as the blank surface 22 of the valve will then be covering the port 10. Steam will therefore be trapped in the end of the cylinder and afford a cushion to prevent the abrupt termination of the stroke of the piston, and thus avoid jarring of the engine and consequent wear and tear. As the valve 7 is moved to permit steam to enter the ports 9 and 10 it will be seen that the steam will first enter through the port 10, as the port 9 will be closed by the piston. By this construction I provide for imparting an initial motion to the piston with a small volume of steam, which is very desirable in direct-acting pumps, and after a slight forward movement the piston 2A uncovers the port 9, so that steam now enters in full volume through both ports 9 and 10, causing the piston to move to the end of its stroke near the opposite end of the cylinder. At said opposite end of the cylinder the same operation will take placethat is to say, the steam will exhaust through the port 11 until the piston moves to the position to cover said port, and the blank surface 22 covering the port 12 steam will be trapped and cushion the piston. The valve 7 being moved to open communication with the ports 11 and 12 through the port 18 of the valve, steam will first pass through the port 12 and impart motion to the piston, and after a slight forward movement port 11 will be uncovered and the full volume of steam will enter the cylinder through both ports 11 and 12.

I have arranged to cause the slide-valve of the cylinder 1 to be operated by the motion of the piston-rod of cylinder 2 and the slidevalve of cylinder 2 to be operated by the motion of the piston-rod of cylinder 1, while the cut-off valve of each cylinder is operated from the motion of its own piston-rod, and I-will now proceed to describe the mechanism for accomplishing this operation.

Mounted on each of the outer bars 5, connecting the steam-cylinders and pump-cylinders, as before referred to, is a bracket 26 26*, supporting uprights 27, which afford bearings for two transverse rods 28 and 29, which are disposed one directly over the other in parallel relation. The respective piston-rods 3O 31 are each provided with a cross-head 32 33, and on the outer side of one of said crossheads is pivotally mounted one end of a link 34:, to the opposite end of which is pivotally connected one end of a lever-arm 35, the opposite end of which is fixedly secured to the lower rod 29. The rod- 29 is adapted to operate the valve of the cylinder 2, and hence toward the opposite end of said rod from that just referred to and in front of the cylinder 2 said rod is provided with a crank 36, to the free end of which crank is pivotally connected an arm 37 the opposite end of which is pivotally mounted in a bearing 38, through the medium of a pin 39, passed through said arm, and secured in the bearing 38 by a nut 10. The bearing 38 forms part of a sleeve 11, which is mounted to slide on the valve-rod 12 a greater or less distance determined by means of adjustable collars 43, mounted on said valve-rod on either side of said sleeve. By the provision of the adjustable collars 13 the sleeve 4:1 will slide a determinate distance in either direction before striking one or the other of the collars to operate the slide-valve, as will be understood.

44 indicates an arm secured to the bracket 26 and affording in its free end a bearing 45 for the outer end of the valve-rod 42. The opposite end of the valve-rod is provided with a rectangular head. 46, which is adapted to be inserted in a slot 47 formed in one end of the valve and to be secured therein by means of a plate 48, screwed to the outer face of said valve and provided in one side with a recess 50, extending to about the center of the plate, which encircles the rod 42 in such manner that the plate shall bear against the inner side of the head 46 and hold it within the slot 47, as clearly shown by Fig. 4. It will thus be seen as the piston-rod 31 reciprocates the rod 29 will be rocked through the medium of the link 34 and lever-arm 35 and that this rocking movement of the rod 39 will cause the crank 36 to reciprocate the arm 37 back and forth, whereby through the medium of the sleeve 41 and the collars 43 the valve-rod 42 will be correspondingly reciprocated and slide the valve 7 of the cylinder 2 back and forth to alternately cover and uncover the ports 9, 10, 11, and 12 in the manner heretofore described.

The rod 28 is adapted to operate the valve of the cylinder 1, and to this end the crosshead 32 is provided with a link 51, the outer end of which is pivotally connected to the lever-arm 52, the opposite end of which is fixedly secured to the shaft 28. Said shaft 28 is provided with a crank 53, to which is connected an arm 54, pivotally secured to a sleeve 55, mounted on the valve-rod 56 in the same manner as described with reference to the corresponding parts of the cylinder 2. Through the medium of the parts described it will be seen that on the reciprocation of the piston 30 the shaft 28 will be rocked to move back and forth the valve 7 of cylinder 1.

The cut-0E valve has previously been briefly referred to and indicated by the numeral 24. This valve comprises a flat piece or plate of metal designed to slide on top of the valve 7 between the guide ribs 23, as previously stated, and at opposite ends is provided with upwardly-projecting portions 57 58. Mounted to move in the space between the projections 57 58 are two blocks 59 60, which are respectively mounted on right and left hand screw-threaded portions of a rod 61. Said rod extends transversely across the entire width of each cylinder and on one'of its ends has loosely mounted, on a reduced portion thereof, a sleeve 62, which is held in place on the red by a nut 63. Mounted on each valvechest is a bracket-arm 64, pivotally mounted on the outer end of which is a bell-crank lever 65, one arm of which is pivotally connected to a rod 66 and the other arm of which is connected, through the medium of a link 67, with the sleeve 62. Secured to the rod 28,

-valve of the cylinder 1.

which operates the valve of the cylinder 1, is a crank 68, to which is pivotally connected the other end of the rod 66, one end of which has been described as being connected to the bell-crank lever 65. Secured to the rod 29, which operates the valve of the cylinder 2, is a crank 69, to which is secured one end of a rod 70, similar to the rod 66 and connected to similar mechanism for operating the cutoff The rod 61 is provided on its opposite end to that described as being secured in the sleeve 62 with a groove 71, which is adapted to receive a feather 72, formed on the inner side of the hub 7 3 on a hand-wheel 74. The said hub 73 is mounted in a bearing 75, supported from the side of each valve-chest, and a clamping-screw 76 is provided in the bearing 75 for preventing the hand-wheel from turning after it has once been adjusted. The rod 61, however, is always free to reciprocate in the hub 73. By loosening the clamping-screw 76 and turning the hand-wheel 74 the hub 61 maybe turned, and this movement will cause the blocks 59 and to be moved closer together or farther apart, as the case may be, due to the fact, as stated, that one block is mounted on a right-hand screw-threaded portion of the rod, while the other block is mounted on the lefthand screw-threaded portion of the rod. The object of adjusting these blocks, which, of course, are intended to come into contact with the projections 57 and 58 of the cut-oil valve, is to determine the point of cut-oil", as the farther the blocks are apart the quicker the cutoff will be and the nearer they are together the slower the cut-off will be. It will be seen, moreover, that as the blocks 59 and 60 are slidably mounted on top of the cut-off valve 24 said cut-off valve may be moved by the slide-valve 7 transversely to the line of movement of said blocks without in any manner affecting the ability of said blocks to operate the cut-off at the desired moment, so that the movement of the cut-off valve is absolutely independent of the movement of the main valve, and such cut-off can be arranged to take place at any desired point in the stroke of the piston irrespective of the relative movement or position of the slide-valve. This is further due to the fact that while each piston-rod operates the cut-off valve of its own cylinder its main valve is operated by the piston-rod of the other cylinder. In the movement of either piston-rod the rod 66 or 7 O, as the case may be, is reciprocated by means of the crank 68 or 69, and through the medium of the bellcrank lever and the link connection 67 with the sleeve 62 the rod will bereciprocated back and forth, the blocks 59 and 60, respectively, coming alternately into contact with the projections 57 and 58 of each cut-off valve to reciprocate said cut-o'tl valve. As said cut-off valve is thus reciprocated it alternately opens and closes the cut-off ports 15 and 16 in the main valve. As the cut-0E port 15 is opened steam enters from the valve-chest 6 through said port and passes out of the steam-port 18 through the ports 11 and 12 to the front end of the cylinder, and as the port 16 is opened steam passes through said port to the port 19 and thence through the ports 9 and 10 to the back end of the cylinder.

The provision of the recess 17 in the top of main valve permits steam to enter beneath the cut-off valve, and thus operate to partially balance said valve and reduce its friction.

By referring to Fig. 2 it will be seen that the valve-seat proper projects above the surrounding surface of the cylinder, the projecting portion being indicated by the numeral 77, and it will also be seen that this projecting portion is not coextensive with the stroke of the valve that is to say,when the valve is moved to the extreme position in either direction there will be an overhanging portion of the valve extending beyond the raised portion 7 7. In other words, in one movement of the valve the steam-port 18 will pass beyond the valve seat, and steam may enter from the steamchest through the port 18 into the interior of the valve, and hence assist in balancing the valve. Before the valve is moved to its extreme position in the opposite direction the port 19 will pass beyond the valve-seat and steam can enter said port to the interior of the valve and balance the same on that side. The partition 20, however, prevents all steam from entering the cylinder, except such as enters from the valve-chest through the cutoff ports 15 or 16.

7 8 indicates the steam-supply pipes communicating with the valve-chest, each of said pipes having a valve 79 and communicating with a common source of steam-supply 80.

81 represents the pipes for exhaust-steam.

A steam end constructed according to my invention as above described will insure regularity and uniformity of stroke of the piston, great economy in the use of steam, and provides for a smooth-running machine, all of which are highly-important objects to be attained in this art.

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

1. In an apparatus of the class described, in combination with a cylinder provided with a main valve carrying a cut-off valve, means for operating said main valve without afiecting the time of action of its cut-off valve, and means, independent of the main-valve-operating means, for operating said cut-off valve to effect the cut-off at predetermined intervals independently of the movement and irrespective of the position of said main valve.

2. in an apparatus of the class described, in combination with a cylinder provided with a main valve carrying a cut-off valve, means for operating said main valve without affecting the time of action of the cut-0E valve and means, independent of the main-valveoperating means, for moving said cut-off valve in a direction at right angles to the movement of said main valve to effect the cut-off at predetermined intervals independently of the movement and irrespective of the position of said main valve.

3. In an apparatus of the class described, in combination with two cylinders each of which is provided with a main valve carrying a cutoff valve, means for operating each main valve from the piston of the other cylinder and without aifecting the time of action of its cut-off valve, and means for operating each cut-off valve fromthe piston of its own cylinder to effect cut-off at predetermined intervals inclependently of the movement and irrespective of the position of said main valves.

4:. In an apparatus of the class described, in combination with two cylinders each of which is provided with a main valve carrying a cutoff valve, means for operating each main valve from the piston of the other cylinder and without affecting the time of action of its cut-off valve, and means for operating each cut-ofi' valve from the piston of its own cylinder in a direction at right angles to the movement of its main valve to effect cut-off at predetermined intervals independently of the movement and irrespective of the position of said main valves.

-5. In an apparatus of the class described, in combination with a cylinder provided with a main valve carrying a cut-off valve, means for moving said main valve without affecting the time of action of the cut-off valve, and adjustable means, independent of the mainvalve-operating means for moving said cut-ofi valve to efl'ect absolute cut-ofis of the steam at any desired point in the stroke of the piston irrespective of the position of said main valve.

6. In an apparatus of the class described, in combination with a cylinder provided with a main valve having a cut-off valve slidably mounted thereon and adapted to move in a direction at right angles to the movement thereof, means for moving said main valve without affecting the time of action of the cut-off valve, and means independent of the main-valveoperating means, and including adjustable contacts, for moving said cut-off valve independently of the movement of said main valve.

7. In an apparatus of the class described, in combination with two cylinders each of which is provided with a main and a cut-off valve, means operated by the movements of the pistons in the two cylinders for effecting movement of the main valves without affecting the time of action of the cut-off valves, and movement of each cut-off valve independently of the movement of its main valve, the main valve of one cylinder being operated from the piston of the other cylinder, and each cut-off valve being operated from the piston of its own cylinder.

S. In an apparatus of the class described, in combination with two cylinders each of which is provided with a main and a cut-off valve, means operated by the piston of each cylinder for operating the main valve of the other cylinder without affecting the time of action of the cut-off valve thereof and for operating each cut-ofli valve independently of the movemen of its main valve. A t

9. In an apparatus of the class described, in combination with two cylinders each of which is provided with a main and a cut-oil valve, means operated by the movement of the piston of each cylinder for operating the main valve of the other cylinder, and means for eflecting an absolute cut-off of the steam at any desired point in the stroke of each piston by said outoff valves irrespective of the relative position of the main valve of said piston.

10. In an apparatus of the class described, in combination with two cylinders each of which is provided with a main valve and a cut-off valve and with a piston-rod and piston, a pair of rock-shafts, one of which is operated by the piston-rod of each cylinder to move the main valve of the other cylinder, and adjustable means for moving said cut-oil? valves comprising a rod provided with right and left hand screw-threads and having means for turning it, contact-blocks mounted on the screw,- threaded portions of said rod and adapted 'to engage opposite ends of said cut-ofi valve, a crank on each of said rock-shafts, rods connected to said cranks, and lever mechanism operatively connecting said rods with the rods of the cut-ofi valves.

11. In an apparatus of the class described, in combination with a cylinder having a main valve, and a cut-ofl valve slidably mounted thereon, means for moving said cut-ofi valve comprising a rod provided with right and left hand screw-threads and having in one end portion a longitudinal groove, a hand-wheel having a hub encircling said rod and provided With a feather inserted in said groove, a bearing for said hub, means for locking said hub against rotation, adjustable contacts mounted on the screw-threaded portions of said rod and adapted to engage opposite end portions of said cut-off valve, and means for reciproeating said rod.

12. In an apparatus of the class described,

a main valve provided with eut-oli and steam ports located, respectively, at the ends and sides of said valve, and a diagonal partition se 'iarating one eut-ol'l' port and steanrport of the valve from the other cutoff and steam port.

13. In an apparatus of the class described, in combination with a cylinder having a piston and a valve-seat, steam-ports terminating in said valve-seat and communicating with the interior of the cylinder, a main valve on said cylinder having cut-oil and steam ports located, respectively, at the ends and sides of said valve, a diagonal partition separating one cut-ofl' and steam port of the valve from the other cut-oli' and steam port, a cutofl' valve mounted on said main valve and means for operating said valves.

14;. In a steam-pump, in combination with a cylinder having a piston and a valve-seat, and provided with main and auxiliary ports leading from said valve-seat and communicating with said cylinder at different distances from the ends thereof, a main valve on said valve-seat having cut-ofl' and steam ports and provided with a blank surface adapted to cover and uncover said main and auxiliary ports and with an exhaust-cavity communicating only with said main ports, a partition separating one cut-oil port and its steam -port of the valve from the other eut-ofl' port and steam-port, a cut-off valve mounted on said main valve, and means for operating said valves.

15. In an apparatus of the class described, a cylinder provided with a valve-seat extending above the surrounding surface of the cylinder, a slide-valve mounted on said seat and having a greater area than said valve-seat and having ports located at the ends and sides of said valve, a steam-chest inclosing said slidevalve, means for reciprocating said valve whereby in operation its ports will alternately be moved beyond each side or the valve-seat to permit steam to enter the valve and thus balance it, and a diagonal partition in said valve separating the respective sets of ports thereof from each other.

Intestimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES A. GOYNE. W'itnesses:

PETER BRoWN, FRANK (JlOYNE.

Images