US2647663A

US2647663A - Dye fluid dispensing meter

Info

Publication number: US2647663A
Application number: US204058A
Authority: US
Inventors: Harry L Stafford
Original assignee: US Department of Agriculture USDA
Current assignee: US Department of Agriculture USDA
Priority date: 1951-01-02
Filing date: 1951-01-02
Publication date: 1953-08-04
Anticipated expiration: 1970-08-04

Description

led Jem. 2, 1951 H. im STAFFQRD DYE; 'FLUID DIsPENsNG METER ATTORNEY WH N@ 1F F .FA TU L H4 BY 4721 Mam( Jg u Patented Aug. 4, 1953 2,647,663 DYE, FLUID-DISEEN SING METER Harry L. Staiord, Alexandria, Va.,y assigner to the United States of America as represented :by the Secretary of Agriculture Application AJanuary 2, 1951, Serial No. 204,058

3 Claims.

(Cl. Z22- 477) (Gran-,tea under Title 35, U. s. code (1952), sec. 266).

The invention herein described may bemanufactured and used by or for the Government of the United States of America for governmental purposes throughout the world without the payment to me of any royalty thereon.

This invention relates to an apparatus for dispensing a liquid, such as aqueous dye, in uniform amounts. It particularly relates to a device for automatically modifying or substantially controlling, or substantially halting, the flow of liquid through an outlet by the movement of a buoyant shuttle to the outlet.

An object of this invention is an apparatus readily calibrated and adjusted to deliver a predetermined amount of liquid.

One embodiment of the invention is illustrated in the drawing, in which:

Figure 1 is a three dimensional view of the assembled apparatus;

Figure 2 is a View in elevation, partly in section, of the shuttle cylinder;

Figure 3 is a vertical section of the lower end of the shuttle and the shuttle cylinder.

Liquid from tank flows into chamber 2 through a lower opening (not shown) in the plate 3, near the lower edge. The function of chamber 2 is to provide a uniform head of liquid for the metering and dispensing apparatus. From chamber 2 the liquid flows through perforations d into pipe 5. During operation of the apparatus, when delivering liquid, the upper end of pipe 5 is open to the atmosphere. Air enters the upper end of pipe 5 and passes through openings 6 into chamber 2, as the contents of the chamber are dispensed. A cap I is conveniently used when chamber 2 is lled initially.

Pipe 5 is welded to chamber 2 and extends below it to provide a coupling end for attachment of the shuttle cylinder 8. Cylinder 8 is a pipe having a one inch inside diameter. In the lower end of s is tted a shuttle seating number 9. Conventional coupling means I0, I2, I3 is employed to attach hose I4. The liquid passes through hose Id and is dispensed by spring valve faucet I5.

The shuttle I6 is conveniently made of seamless aluminum tubing having an outside diameter of three-fourths of an inch. As shown in Figure 3, the surface of the tubing is corrugated by grooves out therein. The two faces of each groove are 90c and 66 to the axis of the tube. The depth of the groove is .025 inch. These corrugations decrease the weight of the tube, thus increasing its buoyancy, and also increase the friction between the shuttle wall and the fluid 'Ihe lower end may be weighted, for example by means of screw I8, for added stability. Notches IQ 1n the lower end of the shuttle are provided for the purpose of bleeding the chamber 8 to counteract the suction in the hose curs during the interval between the impact of the shuttle upon its seat 9 and the closing of the hose valve I5. This releases the shuttle and permits it to rise and complete its The degree angle of the seat sidewall 9U serves to correct any errat1c position of the Valve, by guiding 1t into positive contact with the seat facing which is cut at degrees to the axis.

Rod 2D is adjusted in place to provide a stop 2| for the shuttle. lThe distance the shuttle travels is thus determined. Therefore, the positlon of the stop determines the amount of liquid delivered by the hose. For example, if the amount delivered is too little, the stop 2| should be raised. If the amount is too great, stop 2| should be lowered.

A gate valve (not shown) can be inserted below 9, to serve as additional great that the range of adjustment of the shuttle stop 2| is insuiiicient.

`Tank is not shown with an air vent, and no air vent is intended for the preferred operation. During normal operation water will not spout out of the upper end of pipe 5. This is so because replacing air, passing from apertures 6 the level in 2 is suiiiciently lowered.

Having thus described my invention, I claim:

receive the liquid and at the other end to delivery delivering the substantially uniform amount 'of liquid, a liquid faucet in the movement of the shuttle, the shuttle being free of liquid in the upright tube caused upon opening the liquid faucet, and to seat upon the valve seat to arrest the outflow of liquid past the valve seat, the shuttle being elongated longitudinally of the upright tube, the longitudinal surface of the shuttle being corrugated transversely to increase the friction between the shuttle wall and the surrounding by-passing liquid during the descent of the shuttle, the means providing an intake for air and an outlet for liquid being a conduit extending upwardly into the chamber and communicating through the upper face of the chamber with the atmosphere, said conduit having upper perforations permitting ingress of air into the chamber and lower periorations per-v mitting flow of liquid from the chamber into the conduit and thence into the upright tube.

2. The apparatus of claim 1 in which a passage is provided between the lower end of the shuttle and the valve seat, in the lowermost posi- HARRY L. STAFFORD.

References Cited in the le 0I this patent UNITED STATES PATENTS Number Number Name Date Adams Aug. 26, 1902 Mueller et al June 23, 1914 Diehl Nov. 22, 1932 Sekkel May 2, 1950 FOREGN PATENTS Country Date Germany Sept. 28, 1880