US695133A - Pump. - Google Patents

Description

Patented Mar. Il, |902, C. H. ATKINS,

Pulm P1.-

(Applicatioh led Apr. 25, 1900.)

6 Sheets-Sheet I.

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No. 695,133. 4 Patented Mar. n, |902.

C. Hi-'ATKINS. PUMP.

(Application led Apr. 25, 1900.) (No Model.) 6 Sheets-Shet 2.

JM Q74 No. 695,l33. Patented Mar. Il, |902. C. H. ATKINS.

PUMP.

(Application led Apr. 25, 1900.) (No Model.)

6 Sheets-Sheet 3.

Patented Mar. Il, |1902. C. H. ATKINS.

PUMP.

pplcaton filed Apr. 25, 1900.)

6 Sheetv-Sheet 4.

(No Model.)

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No. 695,!33. Patented Mar. 19'02.

- H. ATKINS. l

l PUMP. (Appnmion maa Apr. 25, 1900.; (No Model.) 6 She'ts-Sheet 5.

No. 695,|33. Pate'ntea-vmar. |9112.

C. H` ATKINS.

PUMP.

. (Application led Apr, 25, 1900.)

(No Model.)

IlNrrnD STATES marcati* OFFICE.

CHARLES H. ATKINS, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO JOSEPH MGWILLIAMS, OF LOUISVILLE, KENTUCKY.

PUMP.

SPECIFICATION forming part of Letters Patent No. 695,133, dated March. 11, 1902.

Application tiled April 25| 1900.

To all whom it may concern.:

Beit known that I, CHARLESl HENRY AT- KINS, a citizen of the United States, residing at Chicago, in the county of Cook and State 5 of Illinois, have invented certain new and useful Improvements in Pumps, of which the following is a full, clear, and exact specification.

My invention relates to that class of pumps lo that are driven or operated by fluid pressure-such,for example, as steam; and the invention has for its primary object to provide a very compact pump which shall be of the maximum capacity and minimum size.

A further object of my invention is to so construct and arrange the parts that one side of the steam or power piston may be utilized as a pump-plunger, the power-cylinder having an extension that is utilized as a pump- 2o barrel.

Another' object of my invention is to operate the pump-valve and the steam-valve by one and the same eccentric or crank and at the same time be able to hold the water-valve open during the full stroke of the pumpplunger, but to close the steam or fluid-pressure valve before the fluid-pressure or steam piston has completed its stroke, thus providing the desired cut-off without the employ- 3o ment of a separate eccentric and at the same time enabling me to make the apparatus compact and simple and with a corresponding reduction in cost of manufacture; and my invention has for its object, finally, to provide a steam or duid-pressure pump, in which all of the working parts shall be hermetically inclosed.

With these ends in view my invention consists in certain features of novelty in the construction, combination, and arrangement of parts by which the said objects and certain other objects hereinafter appearing are attained, all as fully described with reference to the accompanying drawings and more particularly pointed ontwin the claims.

In the said drawings, Figure 1 is a vertical transverse sectional view of my improved pump, taken on the line 1 1, Fig. 6. Fig. 2 is a similar section taken on the line 2 2, Fig. 5o 6. Fig. 3 is a vert-ical longitudinal section,

with the base shown in full, taken on the line Serial No. 14,218. (No model.)

3 3,A Figs. 5 and 6. Fig. 4 is a vertical longitudinal section taken on the line 4 4, Figs. 5 and 6. Fig. 5 is a plan section taken on the line 5 5, Figs. 1, 2, 3, and 4. Fig. 6 is a plan 55 section taken on the line 6 6, Figs. l, 2, 3, and

4. Fig. 7 is a plan section taken on the line' 7 7, Figs. 1, 2, 3, and 4. Fig. S is a plan section taken on the line S 8, Figs. 1, 2, 3, and l. Fig. 9 is a plan section taken on the line 9 9, 6o Figs. 1, 2, 3, and 4. Fig. 10 is a plan section taken on the line 10 10, Figs. 1, 2, 3, and 4; and Fig. 11 is a vertical transverse section taken on the line 11 11, Fig. 6.

1 represents the base or casing provided 65 with removable en ds 2 3, in which are formed bearings 4 for the endsof the crank-shaft 5, which is provided with one or more cranks 6, preferably three, to which are connected, respectively, power-pistons 7 8 9, the connect- 7o ing-rods for said pistons being shown at 10 11 12, respectively. Upon the upper side of the casing 1 is formed or secured a casting 13, in which are formed a number of cylinders 14 15 16, corresponding to and containing the 75 pistons 7 8 9, respectively, and the upper end ofeach one of these cylinders is provided with a reduced extension 17 18 19, in which work, respectively, pump-plungers 20 21 22, the said plungers being formed on and constituting a 8o continuation of the pistons 7 S 9, the plungers and pistons having the novel construction and arrangement clearly shown in the drawings, and from which it appears that each of the pistons 7 8 9 is composed of a lower piece 85 through which the pitman-pin u, passes, and over this is fitted a cylindrical portion b,which is of less diameter than said lower piece, and being provided with a liange b constitutes, with said lower piece, a groove or channel for 9o the piston-ring c. Formed on the part b is a reduced cylindrical portion d, which is shouldered on the said main lower part of the piston and extending upwardly into the extension 17 1S 19 constitutes the lowerpartof the 95 pump-plunger 2O 21 22. The upper end of part d is closed, save for a passage for a bolt e, which carries a nutf above the upper portion g of the pump-plunger, the part cl having a neck CZ, which supports part g and forms roo a channel for packing-ring h. When bolt e (which is threaded in the main lower piece of the steam-piston) is tightened, it draws the parts iirmly together.

The cranks 6 are set at one hundred and twenty degrees apart, and steam is admitted to the cylinders 14 15 16 through a steam-passage 23, formed in the casting 13 and being common to steam-inlet ports 24, leading into valve-housings 25, one of which is arranged adjacent to and has ports 26 communicating with each of the cylinders 14 15 16, respectively, for admitting steam to each of said cylinders at a point between the piston therein and its upper end, so as to force the piston down wardlyand produce the inspirationstroke ofthe pump-plunger. In the valve housings or chambers 25 are arranged balanced l piston-valves 27 28 29, respectively,

7 v which control the admission of pressure t-o the power-cylinders and also control the exhaust therefrom into an exhaust-passage 30, formed in the castings 13, as clearly shown .in Fig. 10, and being common to all of the a cap 38, secured to the top ofthe casting 13,

and such passage 37 being in communication with a water-inlet 39.' The pump-barrels receive water through ports 40 in the valve-chambers 32 (opening into oblique passages 36) as the pump-plungers descend, and when said plungers rise they eject the Water back through passages 36 and ports 40 into a passage 41, formed in thecasting 13 and being connected to the valve chambers 32 through ports 42. The passage 41 communicates with the Water-outlet 43, extending vthrough the side of the casting 13.

The inner or lower ends of the valve-chambers 32 of the pump-valves and the valvechambers 25 of the steam-valves communicate with the casing 1, and the pump-valves are provided with stems or piston-rods 44, while the steam-valves have stems or pistonrods 45, and each of these rods 44 45 is provided with a piston or packing 46, running in the lower end of the valve-chambers, below the exhaust-ports 31 in chambers 25, and which also serve as cross-heads or guides. These guides or pistons 46 are chambered out and provided with cross-pins 46, upon which hang short links 46h, which connect with the pivots 48. The valve stem or rod 44 of each of the pump-valves is connected by means of a yoke 47 with the rod 45 of the adjacent steam-valve, the lower ends ofthe rods 44 45 being provided with pivots 48 for effecting lrhis'connection, and this yoke is connected to or formed on a strap 49 of an eccentric 50, secured to the shaft 5, one of these eccentrics being employed for each pair of the valve, and as a consequence the two valves may be given different times for closing and the required cut-off for-the steam provided by the employment of a single eccentric for both valves. This mechanism for actuating the two valves of a steam-pump is also applicable, it will be seen, to other valve mechanisms where it is desired to give them different times for closing or opening, and I wish it to be understood that such are within the scope of this patent.

In order that the apparatus maybe compact, a very essential feature of this type of pump, the pump-barrels arenot only formed as a continuation of the power-cylinders but are made of smaller diameter than the pumpcylinders and arranged directly over them or in axial alinement with them, so as to leave room between them for the valve-chambers, as more clearly appears in the plan sections, thereby making the Width equal to only the diameter of the power-cylinders and the 'entire length of the pump only'equal to the sum of the diameters of the power cylinders. This formation of the combined power-cylinder and pump-barrel with apower-piston having an extension continuing into the pumpbarrel also enables meto avoid the use of stuffing-boxes heretofore employed and which are not only an expense but require considerable room and add bulk to the apparatus. It will also be seen that by arranging the various inlet and outlet passages for the steam and Water longitudinally and one 'above the other, so that one continuous passage the full length of the apparatus will be common to all of the pumps, and forming these passages in a single casting I avoid the necessity for exterior pipes and fittings, and thereby reduce the bulk, as Well as render the apparatus more durable and efficient. By opening the power-cylinders into the crank-chamber and hermetically sealing or closing the latter, it will further be seen that I render the entire interior of the apparatus tight and free from liability to leak and avoid vthe necessity of anystufng-boxes around the crankshaft, or in fact at any other point-in the device, common piston-rings alone being cmployed wherever it is desired to prevent the escape of steam or the fluid being pumped past moving parts.

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

1. In a pump the combination of a power- ICO IIC

cylinder, a piston therein, a pump-barrel and a plunger in said pum p-barrel, a crank-shaft having a crank to which said pistonis connected, an eccentric on said crank-shaft set ninety degrees in advance of said crank and two valves for controlling respectively the fluid-pressure to the power-cylinder and the inlet and discharge of the pump-barrel, both operatively connected with 4said eccentric, substantially as set forth. l

2. In a pump the combination of a casting having formed therein a plurality of powercylinders each having an extension constituting a pump-barrel, a duid-pressure inlet and an exhaust common to all of said cylinders, a plurality of valves for controlling admission to and exhaustfrom said cylinders, waterlinlet and outlet passages formed in said casting, said pump-barrels having a com mon inlet and a common discharge, valves individual to said pump-barrels for controlling the inlet and discharge therefrom and means for actuating said valves, substantially as set forth.

3. In a pump, the combination with apowercylinder and its piston and a pump-barrel and its plunger of two valve devices for controlling respectively the supply and exhaust to thepower-cylinder and the admission and discharge of Iiuid in the pump-barrel and a single eccentric to which both of said valves are connected.

4. In a pump, the combination with apowercylinder and its piston and a pump-barrel and its plunger of two valve devices arranged side by side for controlling respectively the supply and Vexhaust to the power-cylinder and the admission and discharge of Huid in the pump-barrel and a single eccentric to which both of said valves are connected.

5. In apump, the combination with apowercylinder and its piston and a pump-barrel and its plunger of two valve devices for controlling respectively the supply and exhaust to the power-cylinder and the admission and discharge of iuid `in the pump-barrel, a yoke connecting said valve devices together and a single eccentric to which said yoke is connected.

6. In a pump the combination of a crankshaft, a casing completely inclosing said shaft, power-cylinders opening into said casing and having pump-barrels projecting from them, valve chambers or housings for said power-cylinders and pump-barrels respectively also opening into said casing, pistons in said cylinders having pump-plungers projecting into said barrels, operative connections between said pistons and crank-shaft, and valves in said valve-chambers operatively connected with said crank-shaft, substantially as set forth.

7'. In a pump the combination of a powercylinder, a pump-barrel of smaller diameter than said cylinder arranged axially at the end thereof and opening thereinto, a powerpiston in said cylinder having an extension continuing into said barrel and forming a pum p-plunger, a crank operatively connected vwith said piston, means for admitting pressure to and exhausting it from said cylinder at a point between said piston and pumpbarrel and means for admitting fluid to and exhausting it from said stantially as set forth.

8. In a pump the combination of a powercylinder, a valve-chamber, a crank-chamber into which said power-cylinder and valvechamber open, a"piston in said power-cylinder, a piston-valve in said valve-chamber, a crank-shaft in said crank-chamber, connections bctween said crank-shaft and powerpiston and piston-valve, a piston located in said valve-chamber between said piston-valve and crank-shaft and a pump-plunger actuated by said power-piston, substantially as set forth.

9. In a pump the combination of a. crankshaft, a` plurality of perpendicular powercylinders each having an extension arranged axially at the end thereof and communicating therewith, a power-piston in eachbof said cylinders having an extension continuing into said barrel above it, a crank-shaft common to all of said pistons, steam inlet and outlet passages arranged one above the other, a steam-valve chamber for each of said cylinders, a port leading from each of said cylinders into the steam-valve chamber adjacent thereto, a steam-valve adapted to place said port in communication with either said inlet or exhaust, water inlet and outlet passages arranged horizontally one above the other, a plurality of water-valve chambers one adjacent to each of said pump-barrels and each having communication with said water-inlet passage, a port connecting each of said water-valve chambers with one of said barrels and a separate port connecting each of said Water-valve chambers with said outlet-passage, a valve in each' of said water-valve chambers adapted to place said first port alternately in communication with said inlet and the last said port and means for actuating said steam and Water valves, substantially as set forth.

10. In a pump the combination of a closed crank-chamber, a crank-shaft arranged therein, caps closing the end of said crank-chamber and having journal -bearings for said `crank-shaft, power-cylinders arranged over and communicating with said crank-champ ber, pistons arranged in said power-cylinders and having operative connection with said crank-shaft, and pumps actuated by said pistons, substantially as set forth.

l1. In a pump the combination of a plurality of parallel power-cylinders having reduced axial extensions communicating therewith and constituting pump-barrels,powerpistons arranged in said cylinders and having extensions continuing into said barrels and constituting pumpplungers, valve-chambers arranged parallel with said pump-barrels and pump-barrel, sub-` IIO between said cylinders, steam-valves located in. some'of said chambers for controlling the admission of steam to and the exhaust of steam from said cylinders and Water-valves located in the others of said valve-chambers for controlling the admission of Water to and a, the outlet of Water from said pump-barrels,

Substantially as set forth.

12. In a pump the combination of the casting 13 having a plurality of parallel powercylinders formed therein and provided with reduced extensions communicating with one end thereof and constituting pump-barrels opening through the upper side of said casting, Water-valve chambers also formed in said casting and opening through the upper side thereof, a cap 38 having passage 37 arranged over the upper ends of said pump-barrels and Water-valve chambers and having a Waterinlet, said cap 38 being provided with openings communicating With the upper ends of said Water -valve chambers, the horizontal ports 36 connecting said water-valve chambers with the upper ends of said pu iup-barrels, the horizontal port 41 formed in said casting 13 and'communicating with said Water-valve chambers at a different point, valves in said Water-valve chambers for placing said ports 36 and passage 41 in communication with each other and the passage 36 in communication with the passage 37 alternately, steam-valve chambers also formed in lsaid casting 13, a steam-inlet passage formed in said casting 13 and communicating with all of said steamvalve chambers, a steam exhaust passage forinedvin said casting 13 and alsocommuni- `eating With all of said steam-valve chambers,

a live-steam-outlet `port from each of said steam-valve chambers leading to one of said power-cylinders into the end thereof adjacent to its pump-barrel, a valve in each of said steam-valve chambers adapted to place said live-steam-outlet port alternately in communication with said steam-inlet passage and steam-exhaustpassage, a power-piston in each of said power-cylinders havinga pump-plunger, a crank-shaft and operative connections between said crank-shaft and said pistons and valves, substantially as set forth.

CHARLES Il. ATKINS.

Witnesses:

EDNA B. JOHNSON, JN0. G. ELLIOTT.

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