US808194A - Double-acting sprayer. - Google Patents

Description

No. 808.194. PATENTED DEC. 26, 1905.

P.S.GAROTHBRS.

DOUBLE ACTING SPRAYER. APPLICATION FILED MAR.22.1905.

UNITED STATES PATENT @FFTCE.

DOUBLE-ACTING SPRAYER.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed March 22, 1905. Serial No. 251,487.

To all whom, it may concern:

Be it known that I, FRANK SEBRING CA- ROTHERS, a citizen of the UnitedStates, residing at Jersey Shore, in the county of Lycoming and State of Pennsylvania, have invented new and useful Improvements in Double- Acting Sprayers, of which the following is a specification.

The object of my invention is the production of a reciprocating sprayer which shall deliver liquid at each backward and forward stroke of the piston and practically supply a continuous spray.

\Vith this end in View my invention consists in certain novelties of construction and combinations of parts hereinafter set forth and claimed.

The accompanying drawing illustrates an example of the physical embodiment of the invention constructed according to the best mode I have so far devised for the practical application of the principle.

Figure 1 isalongitudinally-vertical section of Fig. 2. Fig. 2 is a top plan view of the device. Fig. 3 is a section of the reservoir, showing an air and a liquid delivery tube. Fig. 4 is a vertical section of the piston and part of the piston-stem. Fig. 5 is a section of Fig. 4 on line a; 0 looking toward the left.

Referring to the several figures, the numeral 1 designates the reservoir for the liquid to be sprayed, which reservoir may be of any shape or type; 2, an opening and screw-cap for the introduction of liquid to the reservoir.

3 and 4: are two liquid -delivery tubes or pipes having open ends exterior of the wall of the reservoir and their opposite ends terminating near the bottom of the interior of the reservoir, as shown in Fig. 1; 5, the tube within which air is compressed; 6, the conical front end of the tube; 7, a nozzle located at right angles to the pipe or tube 3, as shown; 8, an air-delivery tube located parallel with the main tube; 9, a nozzle arranged at right angles to the end of the tube 4, as shown by Fig. 2 of the drawings; 10, an opening at the rear end of the tube 5 for the passage of compressed air to the tube 8 upon the rearward movement or stroke of the piston; 11, the hollow piston-rod; 12, a handle; 13, an orifice adjacent the handle and allowing air to pass to the interior of the hollow pistonrod; 1 1, the threaded end of the piston-rod; 15, the outer piston, and 16 the inner piston. Each of the pistons comprises a disk 17, a disk 18 having a flange 19, and a flanged packing 20, of leather or other suitable flexible material located between the disks. These pistons are arranged parallel and a slight distance apart with spacing-pieces 21 between, which spacing-pieces in this instance are struck up from the body of one of the disks 17, as shown by Fig. 5 of the drawings. Two threaded nuts 22 23 are located upon the threaded end of the piston-rod and clamp the two pistons in place, the spacing-pieces maintaining an open space between the two pistons. An opening 2 1 from the hollow piston-rod allows external air to pass by way of the orifice 13 to the space between the pistons. A plug 25 closes the end of the air-compression tube which is secured in position by any suitable means, as by screws. A packing-leather 26 is seated within a groove in the plug, and said leather has a flange 27 extending over the end surface of the plug. A circular recess 28 is provided in the inner end of the plug and a stufling or packing 29 inserted, which surrounds the piston-stem and in connection with a perforated disk 30, fastened by small screws, constitutes a stufling-box and stufling. A disk 31 upon the piston-rod exterior of the plug limits the travel of the piston-rod.

The operation of the sprayer is as follows: Assuming the compound piston and piston-rod to occupy the positions shown in Fig. 1, the movement of the pistons rearwardly compresses the air in the main tube, which passes out through the orifice 10 into the tube 8 and thence to the nozzle 9, where it is discharged across the end of the liquid-delivery tube 4:, which exhausts the air in said tubet and draws up the liquid from the reservoir and sprays it as long as the pressure is maintained in the tube 8, as is obvious. While the piston is moving rearwardly, air passes to the inside of the hollow piston-rod by way of the orifice 13, is discharged through the opening 2 1 to the space between the two pistons, and thence is delivered to the interior of the front end of the compression-tube 5 by way of the open space between the inner surface of the tube and the external surface of the packing 20, the flanged edge of the packing bending inwardly and allowing the air to pass. When the compound piston is moved from right to left, the operation is identical with that described, except that the air compressed within the front end of the compression-tube is discharged through the nozzle 7 and across the end of the liq uid-delivery tube 3. It is obvious that each of the nozzles 7 and 9 and liquid-delivery tubes IIO 3 and 4 may be subdivided into two or more branches, so as to give a greater quantity of spray.

From the foregoing it is clear that I have produced a reciprocating sprayer whichin operation will provide a practically continuous delivery of the liquid in the reservoir and in a finely-divided stateniingles with the air under compression.

While I have illustrated and described only one example of the physical embodiment of my invention, I do not intend to restrict my claims to such specific example in all its details of construction, inasmuch as the principle may be embodied in other modes and changes and modifications be introduced without constituting a substantial departure.

What I claim is 1. A double-acting sprayer comprising a reservoir; liquiddelivery tubes; air-delivery nozzles; a compression-tube; a supplemental tube; a compound piston; and a hollow piston-rod for the supply of external air to the interior of the compression-tube; each liquiddelivery tube having one end located in the reservoir and the opposite end projecting through the wall of the reservoir; the air-delivery nozzles being in communication with the compression and supplemental tubes and their open ends located adjacent the open ends of the liquid-delivery tubes; the compound piston being located upon the end of the hollow piston-rod; and said hollow piston-rod having a hole 13 adjacent the handle and outside the compression-tn be.

2. A double-acting sprayer comprising a reservoir; liquid-delivery tubes; air-delivery nozzles; a compression-tube; a supplemental tube; two pistons with a space between; and a hollow piston-rod communicating with the external atmosphere by means of a hole 13 outside the compression-tube and with the space between the pistons by means of the opening 24:; and each of said pistons being pro vided with means for allowing air to pass alternately to that end of the compression-tube which is opposite to the end in which air is being compressed.

3. The combination with asprayer operating substantially as set forth, of, a compression-tube; a supplemental tube; two pistons arranged side by side and with a space between; spacing-pieces; and a hollow piston-rod in communication with the external atmosphere and the space between the two pistons; said piston-rod being threaded at the end and having thereon nuts 22, 23, between which latter are located the pistons which are spaced apart by means of the said spacing-pieces.

4. The combination with a sprayer, constructed substantially as set forth, of a compression-tube; a supplemental tube; two pistons arranged side by side in parallel planes and separated each from the other to form a space between them, each piston having a flanged packing and the flanges of the two pistons oppositely disposed; and a hollow pistonrod in communication with the external atmosphere and the space between the two pistons.

In testimony whereof I aiiix my signature in presence of two witnesses.

FRANK SEEKING CAROTHERS.

Witnesses:

J. J. VVILsoN, J. F. CARoTHERs.

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