US527794A - Spraying-pump - Google Patents

Description

v .(NpModeL) o. JAMES.- SIIDRAYING- PUMP.

Patented oct. 23,1894.-

W WWII/AZ No.v 527,794.

Fries.,

CHARLES H. JAMES, OF WABASH, INDIANA.

SPRAYING-PUMP..

SPECIFICATION forming part of Letters Patent No. 527,794, dated October 23, 1894. pplcatll flled October 18, 1893- Serial No. 488,449. (No model.)

' .To all whom it may concern;

sive.

Be it known that I, CHARLES H. JAMES, a citizen of the United States, residing at Wabash, in the county of Wabash and State of Indiana, yhave invented certain new and useful Improvements in Spraying-Pumps; and I do declare the following to be a full, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to portable handpumps for spraying fruit-trees, shrubbery, &;c., with an insecticide, and the invention consists in certain improvements in construction whereby an efcient and convenient spraying pump is produced which at the same time is extremely simple and quite inexpen- A spraying pump constructed in accordance with the invention is illustrated in the accompanying drawings, wherein- Figure lis a side View of the apparatus partly in section, and Fig. 2 is a side view on a reduced scale showing its manner of use.

Thepump comprises, as its prominent features, a pump cylinder A, in which works a piston B, a hose-pipe C communicating with said pump-cylinder, and an air-tube D also communicating with said pump-cylinder and with said hose-pipe. The air-tube D is along vertical tube which is closed at top and bottom as shown and comprises an upper main portion constituting an air-chamber and the lower portion or neck D of less diameter than said main portion. The two sections of the air-tube are joined together by a coupling d The lower section D of the air-tube includes a laterally-placed T-coupling e, through the horizontal member of which communication is made with the pumpcylinder A. The pipe connections between the pump-cylinder and the air-tube include a reversed T-'coupling t c, whose vertical member connects directly with the hose-pipe C, while one of its lateral branches connects with the. T-coupling e of the air-tube through a short pipe-section f, and its other lateral branch connects with the pump-cylinder through a short pipe-section g.

The pipe connections g c f provide a horizontal passage G, by which the pump-cylinder, the air-tube and the hose-pipe are all connected and given intercommunication.

Above the coupling d between the two sections of the air-tube, the air-tube is embraced by one end of a clamp or clevis h', whose other end embraces the pump-cylinder near its top,

thus firmly connecting the air-tube and pumpcylinder. Near its uppercnd, the air-tube is embraced by the clamping sleeve of a bracket h, at the outer end of which ispivoted the pump handle or lever H. To .the pump-handle is pivoted the piston-rod B carrying at its lower end the pivoted piston B, which reciprocates in the pump-cylinder A.

The piston B, may be of Wood, carrying leather packing disks b', and encircled for a portion of its length by a metallic sleeve b. The end of the piston-rodenters'a slot or recess in the top of the piston and is journaled within the slot by a transverse pin or pivot as indicated.

The pump-cylinder A is open at its top and bottom, but its lower end a is narrowed to form a valve-seat fu. The open ylower end a, of the pump-cylinder constitutes the liquidinlet, and its lower edge is notched as shown. At the bottom of the pump-cylinder, normally seating on the valve-seat o, is a ball-checkvalve V. The inner end of the short pipesection g between the pump-cylinder and the T-coupling c serves as a valve-seat for a check-valve W which controls the outlet from the pump-cylinder into the passage G. The valve W, is a `horizontally-closing lift-valve provided with a long guide-stem w extending through the passage G nearly to the farther ,wall of the air tube, so that the valve W is allowed but very slight play to and from its seat.

The hose-pipe C which connects centrally with the T-coupling c is a metallic pipe of small diameter which extends upward between the pump-cylinder and the air-tube, passing to one side of the clamp h and bracket h, and is curved forward at its upper end where it terminates above the airt'ube D in a nozzle N, having stop-cock n.

The air-tube D extends above the bracket h to which the pump-handle is'pivoted, and

apparatus when in use, (Fig. 2.) The lower part D of the air-tube extends down below the passage G, as far as or farther than the bottom' of the pumpcylinder A, a.

The operation is as followsz-The insecticide or other liquid to be sprayed is contained in a pail or other convenient receptacle, and thelower end of the pump is introduced thereinto, resting upon the bottom of the pail and immersed in the liquid. Supposing that the pumphandle H at Iirst occupies its lowest position, when the handle is raised the piston B is drawn upward within the pump-cylinder A, thus creating suction in the lower part of the pump-cylinder, which lifts the ball-valve V from its seat and `draws in liquid from the pail into the cylinder below the piston.` The notches at theedge of the lower end a of the cylinder permit the entrance of the liquid and prevent the lower end ofthe cylinder from being closed by resting on the bottom of the pail. The suction created at the rising ofthe piston also draws the valve W to its seat, thus closing communication with the passage G. At the close o f the upstroke of the piston, the ball-check-valve V falls,` to its seat and prevents the escape of the liquid in that direction. Then when the handle H, is depressed to give the downstroke to piston B, the downward pressure of the piston upon the liquid below it presses the valve V closely to its seat and at the same time presses back the valve W, which permits the liquid to be forced from the pump-cylinder into the passage G, and thence into thehose-pipe C and into the lower part of theair-tube. Further operation of the pump-handle will continue to draw the liquid from the pail and force it past the valve W, exactly uponthe principle of any ordinary forcer` pump, the liquid finding its outlet through the hose-pipe C, and nozzle N. A portion of the liquid which is forced into the passage G enters the lower end of the air-tube and rises therein, thus compressing the air in theupper part of the air-chamber, and the air-pressure so produced within the air-chamber at each downward stroke of the piston rey-acts upon the liquid during the 11p-stroke of the piston, thus producing a continuous flow of liquid through the discharge pipe C, instead of an intermittent iow such as would occur inthe absence of an air-chamber. The nozzle N projects the liquid in a fine spray, the discharge being regulated by the stopcock n. If preferred, the nozzle may be constructed so as to discharge the liquid in a small stream when the cock is fully open, the spray being produced when desired by partly closing the cock.

The manner of manipulating the pump is shown in Fig. 2, the pump being held steady within the pail or other vessel by grasping the Vupper end D2 o f the air tube with one hand, while the pump is operated bythe other hand manipulating the handle I-I. The hosepipe C being of metal stands erect inthe position shown, its nozzle end being bent to the proper angle; and the direction of the spray is controlled by turning or incliniug the pump by the left hand which grasps the top of the air-tube. The lower end of the air-tube rests upon the bottom ot' the pail and constitutes the foot upon which the pump is supported during use.

It will be seen that the described construction of pump makes a handy and compact structure, and is very simple, requiring no special castings and being formed almost entirely of piping such as is anywhere obtainable as a common commercial product. The air-chamber is formed by a long upright tube which provides the necessary air space, and at the same time carries the support for the pump-lever, and serves as the handle for holding the pump when in use and as the foot upon .which the apparatus rests. Moreover, the air-tube being located in front of the hose-pipe C, it constitutes a shield or protection for the latter, being larger and stouter.

The main advantage of the present invention is that it reduces the necessary elements of an ecient spraying-pump to such asimple uand inexpensive form as will permit the much more extensive use of such pumps than has existed heretofore.

The necessity of usinga spraying apparatus for applying an insecticide to growing plants,

`and especially tofruit-trees, is becoming more and more apparent to orchard-owners and all growers of fruits, but the more or less elaborate outfits for the purpose which have appeared onthe market have been obtainable only by a considerable outlay of money such as but few persons could afford.

A spraying pump made in accordance with the present invention can be manufactured cheaply and sold at a low price, and will prove IOD equally efficient and more durable and handy than the higher-priced ones heretoforein use.

I claim as my invention* l. A portable spraying-pump adapted lobe introducedinto an independent liquid receptacle to pump liquid therefrom, comprising a pump cylinder, a discharge pipe, and an air tube, arranged vertically side by side and in line with each other and communicating at their lower ends, said pump cylinder having a liquid inlet at its bottom, and said air tube extending above the pump cylinder and carrying the fulcrum for the pump lever, substantially as set forth.

2. Aportable spraying-pump adapted to be introduced into an independent liquid receptacle to pump liquid therefrom, comprising a pump cylinder with a liquid inlet at its lower end, a vertical air tube with which said pump cylinder communicates through thehorizontal liquid passage G, said air tube being arranged parallel to said pump cylinder, eX-

- tending thereabove, and carrying the f ulcrum for the pump lever, and a liquid discharge pipe leading from said horizontal liquid passage, extending vertically between said pump IIO ` cylinderand air tube, and terminating in a thereof constituting respectively the handle I5 for steadyiug the pump and the foot upon which it rests, substantiallyas set forth.

4. In a portable spraying pump, the combination of the vertical pump-cylinder A having valve-seat u and ball-valve V, the closed 2o Vertical airtube D to which said cylinderis clamped said air-tube having two sections, coupled at d and the laterallyplaced T-coupling e below said coupling d, pipe-connections connecting said T-coupling e with the pumpcylinder and including the reversed T-coupe 5 ling c, the lift-valve W within said pipe connections controlling the outlet from said pump -cylinder, the dischargepipe C connected with said T-coupling c extending upwardly and terminating in a spraying nozzle, the bracket h clamped lto the air-tube D near its upper end, the pump-lever H pivoted to said bracket, the piston-rod B', and the pumppiston B, substantially asset forth.

In testimony whereof I ax my signature in 3 5 presence of two witnesses.

' CHARLES H. JAMES.

Witnesses:

WILL K. SNAVELLY, JOHN H. DICKERS. i

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