US254129A - hanson - Google Patents

Description

(No Model.)

F. B. HANSON.

PUMP.

No. 254,129. y Patented Feb. 28,1882.

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, *UNITED STATES? PATENT OFFICE..

PUMP.

SPECIFICATION forming part of Letters Patent No. 254,129, dated February 2B, 1882.

` Application filed June 2, 1881. (No model.)

`useful Improvements in Pumps, of which the following is a specication.

Although certain features of the invention are applicable to hand-pumps generally,the

invention is particularly intended for combined lift and force pumps; and its object is to provide a simple and compact pump, the parts of which are so connected that they may be easily pnttogether, and are so arranged that they are readily accessible for examination and reairs.

The invention con sistsin the combination, in apump, of an upright cylinder and a piston, a chamber above the cylinder containing mechanism for imparting motion to the piston, suction and discharge chests containing suction and discharge valves arranged immediately above said chamber, and passages leadin g from said valve-chests to said cylinder above and belowlthe piston. This arrangement renders the valves readily accessible for examination or repair, and the discharge-chest with which the discharge-pipe communicates may be constructed to serve as an air-chamber. o

, 'The invention also consists in the combination, in a pump, of a piston, an arm or lever and allink for operating said piston, a rock-shaft,`

and a novel means of locking said lever or arm upon said rock-shaft, whereby I provide for placing the lever or arm within the casing or body of the pump,and then inserting the rockshaft through the side of the pump .and said lever or arm, after which said lever or arm may be conveniently locked to the shaft.

The invention also consists in the combination, with said piston, lever or arm, link, and rock-shaft, of stops upon the interior ot' the pump easing or body, and projections upon said lever or arm which engage with said stops and properly limit the movement of said leveror arm and the stroke ot the piston.

In the accompanying drawings, Figure 1 represents a central vertical section of a'pump embodying my invention. Fig. 2 represents a similar section upon the dottted line .r @0,Fi g. l; and Fig. 3 represents a horizontal section upon the irregular dotted line y y, Fig. 1.

Similar letters of reference designate corresponding parts in all the figures. `A designates the barrel or cylinder ot' the pump, whichis secured in an upright position upon a piston, B. Thispiston is here represented as composed of a hollow casting, the lower part ot' which is of reduced diameter and has fitted upon it two cup-leather p'ackings, a a, which are secured by a nut, b, and prevent the leakage of liquid past the piston in either direction. The pistonB might, however,be otherwise constructed and provided with any suitable pack- The barrel or cylinder A is surmounted by a chamber, C, which contains the devices for imparting motion to the piston,hereinafter described, and above the Vsaid chamber are arranged a suction-chest, D, and a dischargechest, E. The barrel or cylinderA, the chamber C, and thetwo chestsD and E are all represented as constructed withy danges through which bolts may be inserted for securing the several parts together, and'packing or gaskets of rubber or other packing material may be placed between the tlan ges to make tight joints.

Upon the side ofthe chamber C is a nozzle, o, (shown in Fig. 2,) to which the suction-pipe may be connected, and the liquid passestherefrom through a passage, d, to the suction-chest I). The entrance of liquid from the suctionchest D is controlled by valves f, which may be hinged, as here shown, or of any other suitable character, and from the suction-chest the liquid passes through a passage, y, to the cylinder A upon the under side of the piston B, and through a passage, g', to the chamber C,

a base-piece, A', and has litted within itand thence to the cylinder upon the upper side IOO is connected with one end of G, which is fixed upon a rock-shaft, H, (best shown in Fig.3,) and which may be oscillated by meansof a handle or lever, H', outside the pump.

The eye or hub G of the lever or arm G, through which the roek-shaftH is inserted, fits within a narrow extension, C', of the chamber C, and is thereby prevented from lateral movement.

The portion of the rock-shaft H upon which the eye or hub G of the lever or arm G is secured is of reduced diameter, and uponeach' side oi' said eye or hub are shoulders j j', of square or polygonal form, which tit in corresponding seats in opposite sides of the eye or hub. The shoulderj is formed upon the rockshal't itself; but the shoulder j is formed by one end ot' a sleeve, I, fitting upon the portion of the rock-shaftwhich is of reduced diameter, andthe said sleeve may be forced inward to clamp the eye or hub G tightly by means of a cap-nut, k, screwed upon the end of the rock` shaft. In this way the lever or arm Gislocked so as to turn with the rock-shaft. The rockshafttts in bearings I, formed in hubs or bosses projectingfrom the sides of' the pump,and oneof which-is closed by a screw-plug, m, to prevent leakage, while the other is constructed with a stuffing-box, a, for the same purpose.

In securing -the lever or arm G upon the rock-shaft H the former is placed in position within the pump and the shaft. The sleeve I, being removed, is inserted from the outside through its bearings l and the eye or hub G. The sleeve I is then secured in place by the nnt 7c, t-hus locking the lever or arm securely to the rock-shaft, and still alordin g provision for its ready detachment therefrom, if necessary.

Upon the interior of the chamber C are shoulders o, and the hub or eye G of the lever or arm G has projeetionsp, which engage with said shoulders, and thus form stops lfor limiting the oscillation of the lever or arm andtic ing the stroke of the piston.

By my invention I provide a pump of simple construction and compact form, andthe several parts of which are readily accessible, it

necessary, for examination and repairs.

What I claim as my invention, and desire tosecure by Letters Patent, is-

1. In a pump, the combination of an lnprightcylinderandapiston,achamberabovethe a lever or arm,

cylinder containing mechanism for imparting motion to said piston, suction and discharge chests containing suction and discharge valves arranged im mediately above said chamber, and passages leading from said chests to said cylinder above and below the piston, substantially as specied.

2. The combination ot the cylinder A and piston B, the chamber G, arranged above and supported by said cylinder, mechanism for operating the piston, contained in said chamber, the suction and discharge chests B and E, containing valves j' h, the passages g g', and. the partition g2, separating said passages, all substantially as specified.

3. The combination ot' the cylinder A and piston B, the chamber U, arrangedabove and supported by said cylinder, mechanism for operating said piston, arranged in'said cham-v ber, the suction and discharge chests D. and E, containing valves f h, the passages g g', and the inwardly-projecting nozzle-z' in the chest E, whereby the latter is made to'serve as an air-chamber, substantially as specified.

4. Ina pump, the combinationvot` a cylinder and piston, a lever or arm anda link for opi operating said piston, and a rock-shaft inserted through saidlever or arm, and comprising: square or polygonal shoulders,between.` which said lever or arm is held, and which eu-y ter corresponding seats in opposite sides thereof, one of said shoulders being formed-by a sleeve fitting upon said shaft, substantially y as specified.Y

5. Theconibination' of thexlever or arm G, I Y

the rock-shaft H, having a shoulder, j, the sleevel, forming the shoulder j', and the nut 7c for securing said sleeve'l uponthe roekshaft, substantially as specified.v

' 6. Ina pump, the combination of acylindcr.v and=piston,fa linlr'and a lever or-arm forim parting vmotion to saidpiston, a rock-shaft to e 95 winch said lever or arm 1s secured, stops upon'v theinterior of the'puni p, and projections upon said lever or f arm, which` are'adaptedto en'-A gage-with said .stops for-limiting the movement of said =lcver or-arm, substantiallyl asA specified.

FRANK B; HANSON.- Witnesses:

T. J. KEANE, CHANDLER HALL.

IOO

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