US578902A - Spraying-machine and plunger therefor - Google Patents

Description

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UNITED STATES PATENT Ormes.

SPRAYlNG-MACHINE AND PLUNGER THEREFOR.`

SPECIFICATION forming part of Letters Patent N0. 578,902, dated March 16, 1897.

Application filed February 4, 1896. Serial No. 578,017. (No model.)

To all whom, it may concern,.-

Be it known that I, ARTHUR H. RUeGLns, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of, California, have invented new and useful Improvements in Spraying-Machines and Plungers Therefor, of which the following is a specification.

In Southern California, and in fact all fruitproducing countries, fruit-trees are subject to depredations from scale and various insects which destroy the vitality of the tree or prey upon the fruit borne thereby. One of the most common remedies for this has been by spraying the trees with solutions and iiuid compounds containing various ingredients and by means of pressure forced through iine nozzles and discharged among the branches and leaves of the trees in very fine fog-like spray. In the case of large orchards the expense of performing this operation is considerable, and heretofore, owing to the construction of the machine for spraying, the difficulty, expense, and labor have been in excess of what .is necessary with my improved machine.

The objects of my invention are to produce a machine of this class which will be very simple in its construction and inexpensive to manufacture, one which will be of the utmost compac'tness and rigidity, so that it will not be liable to become broken or get out of order, and one which may be easily moved by one person from place to place when desired.

The accompanying drawings illustrate my invention.

Figure 1 is a perspective side elevation of a spraying-machine embodying my invention. Fig. 2 is a fragmental longitudinal vertical section of the same. Fig. 3 is alongitudinal vertical section of my improved plunger for the pump. Fig. 4c is a plan view of the base or bottom of the device, and Fig. 5 is a crosssection of the same.

In the drawings, A represents a base or bottom which is provided with an annular upwardly-proj ecting iian ge A,which is provided with a shoulder a", which is arranged to seat the lower end of the air-chamber cylinder B. Through this iiange and below the shoulder extend an inlet-port a andan outlet-port a',

which respectively open into and lead from the bottom of the chamber B of the cylinder B. By this means I avoid the necessity of drilling outlet and inlet ports through the cyl* inder and the consequent difficulty of causing them to register with the ports through the flange.

C is a cap or top which is provided with a downwardly-projecting flange C', which is arranged to seat upon the upper end of the cylinder B. Rigidly fixed to this cap is the cylinder D' of the pump D, which is arranged to pump fluid (or air,` as the case may be) into the chamber B. This pump has its cylinder D preferably cast integral with the cap C, so that thereby the expense of manufacture is greatly reduced and the absoluterigidity of the connection between the pump and the cap is insured. The base A and the cap C are connected with each other by means of connectin g rods or bolts E, which have their lower ends arranged to screw into screw-threaded opening a, provided in the base, and to pass through holes c', drilled through t-he cap C and nuts E, screwed upon the bolts, to clamp the base and the cap firmly against the ends of the cylinder B. By this means I am enabled to make the base very light and thin and yet secure great strength and avoid objectionable projection of the bolts beyond the face of the base.

The pump D is provided with an inlet-port d and an outlet CZ. The outlet-port d' of the pump is connected with the inlet-port a of the chamber B by means of a connecting-pipe F. The inlet d of the pump is provided with a short section of pipe G, to which is ordinarily secured a length of hose which is adapted to supply to the pump the liquid to be sprayed. 9o The outlet-port a' of the chamber B is provided with a discharge-pipe H, which is provided with a nipple h, whereto may be secured the hose ordinarily employed in spraymg. 95

The ordinary operation of producing a pump-plunger for force-pu mps is to turn such plunger to :fit truly within the opening in which it is to be reciprocated. This is very expensive and greatly increases the cost of roo spraying-machines. I have devised means whereby I am enabled to make the plunger out of ordinary drawn-brass tubing aird to so arrange it that it will withstand all the pressure which can be brought to bear upon it. It is well known that a cylinder will stand an imlnense amount of pressure if the pressure is applied evenly upon all parts of the outside of the cylinder. This is the case with pumpplungers of this class, but the weak point is atthe ends thereof, where the connection must be Very rigid and strong in order to withstand the great force which is bro ugh t to bear thereagainst.

` My improved plunger consists of a length of drawn tubing J, having each end closed by means of a metal plug jj', respectively, each arranged to fit within one end of the plunger and each provided with a shoulder j" j", respectively, arranged to rest against the ends of the plunger, to thereby support the thrust against the plunger-caps. The plugs are brazed or otherwise secured in the ends of the tube, as shown in Fig. 3, and the plugj is provided with an upwardly-projecting ear J, to which is secured the pump-handle K.

Suitable valves L, M, and O are provided to control the fiow of liquid through the various passages.

In practice the cylinder B is made of a single length of lap-welded metal pipe cut into suitable length, and the base A is formed of cast metal, with the ports a a cored out therein. The cap C is also castfrom metal, preferably with the pump-cylinder D integral therewith. To assemble the par-ts, a suitable packing amis placed in the base-seat formed by the fiange A', and a packing C is placed in the .seat formed by the flange C of the cap member, and the cylinder is then arranged in position with its ends seated in the baseseat. Then the cap C is placed with its seat embracing the upper endl of the cylinder, and the connecting or tie bolts E are then passed through suitable openings c', provided in ythe projecting rim of the cap and are screwed into suitable screw-openings a", provided in the base. These openings are not illustrated in detail for the reason that the construction will be clearly understood by those versed in the art.

Then the various parts are assembled, by operating the pump liquid is drawn through the inlet-pipe CZ and discharged through the outlet-port cZ,.passing through the pipe F and entering the bottom of the chamber B' through the inlet-port a. It will be understood that the Valve controlling the dischargepipe leading from vthe chamber B is-closed until sufficient liquid has been pumped into the chamber B' to cause compression` of the air therein sufficient to force the liquid through the discharge-pipe and through the spray-nozzle to produce a fine spray. rIn case a heavy pressure is required the pump is first opeated to pump air into the chamber B', so that the pressure in the chamber is considerable before any liquid is forced thereinto. B y this means sufficient pressure can be caused within the air-chamber to force from the chamber and to finally spray all the liquid contained in the chamber. 1

The operation of sprayin gis proceeded with in the ordinary manner, the base A serving as a support for the entire device. By reason of its compactness, when it is desired to move the machine one man can easily carry it from one place to another. This is not possible with any other machine of equal capacity of which I am aware; also, owing to casting the pump-cylinder integral With the cap there is no liability of the parts working loose, and the veryy highest degree of rigidity is obtained at a minimum cost.

Now, having described my invention, what I claim as new,I and desire to secure by Letters Patent, is-

1. The combination set forth of the base provided with the annular base-seat and with theinlet-port andthe outlet-port, each passing through the base and opening inside the base-seat; the air-chamber arranged with its lower end seated in the base-seat; the'top or cap provided with the seat arranged to seat the top of the cylinder and seated-upon such cylinder; the Apump rigidly fixed to the cap and provided with the inlet and the outlet ports; a pipe arranged exterior to the cylinder and connecting the outlet-port of the pump with the inlet-port of the base; a discharge-pipe leading from the outlet-port of the base; a supply-pipe leading to-theinletport of the pump, and suitable valves arranged to control the various passages.

2. In a spraying-machine, the combination of the cast-metal base having the upwardlyprojecting annular flange provided with the shoulder arranged to seat the bottom of the air-chamber cylinder, and having the inletport and the outlet-port passing through the fiange below the shoulder; the air-chamber cylinder having its lower end seated upon the shoulder of the base-fiange; the capfprovided with a downwardly-projecting flange arranged to seat the upper endl of the airchamber cylinder, and having the puinp-oylinder cast integral therewith; the packing arranged in the cylinder-seats; the pump having the-inlet and the outlet ports; the pipe connecting the outlet-port of the pump with the inlet-port of the base; a discharge-pipe leading from the outlet-port of the base; a supply-pipe leading to the inlet-port of the pump; valves arranged to control the various passages; and the bolt-rods arranged to connect the base and the cap` and to clamp-them rmly upon the ends of the air-chamber cylinder.

3. In a spraying-machine, the combination Aof the cast-metal base having the upwardlyprojecting annular fiangeprovided with the shoulder arranged to seat the bottomof the air-chamber cylinder, and having the inletport and the ou tiet-port passing throughthe flange below the shoulder, and also provided with the screw-threaded openings arranged IOO IIO

in the base outside of the flange; the airchamber cylinder having its lower end seated upon the shoulder of the base-flange the oap, provided with the downwardlyprojecting flange arranged to seat the top of the airehamber cylinder, and having the pump-cylinder east integral therewith, and also provided with the bolt-holes arranged outside of the flange; the packing arranged in the cylinder-seats the pump having the inlet and the outlet ports; the pipe connecting the outlet port of the pump with the inlet-port of the base; a discharge-pipe leading from the outlet-port of the base; valves arranged to oontrol the various passages; the boltrods having their lower ends screwed into the screwthreaded openings in the base, and their upper ends passed through the bolt-holes in the ARTHUR H. RUGGLES.

Vtnesses:

ALFRED I. TOWNSEND, JAMES R. TowNsENn.

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