US1806192A - Apparatus for spraying - Google Patents

Description

May 19, 1931.

c. D. COLLINS 1,806,192 APPARATUS FOR SPRAYING Filed Au 21, 5

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INVENTOR.

ATTORNEY.

Patented May 19, 1931 UNITED STATES PATENT OFFICE- CHARLES D. COLLINS, OF NEW YORK, N. Y., Assreivon TO AMERICAN CYANAMID ooM- PANY, OF NEW YORK, N. Y., A oorc-rona'rron or MAINE APPARATUS FOR SPRAYING Application filed August 21, 1925. Serial .No. 51,560.

This invention relates tospraying, more particularly to the spraying of volatile liquids which vaporize and act as fumigants.

The use of liquids as fumigants, such as l quid hydrocyanic acid ormixtures containing the same,.is of growing importance, be ing used, in the fumigation of ships, warehouses, factories, rooms, trees and the like. Various types of apparatus for applying the ;-.me have been devised and are in use, and among them is the apparatus described and claimed in my' copending application Serial No. 29,639, filed May 11, 1925, for ship fumigating apparatus. Because of the construciion thereof it is possible to accurately meas ure out either large doses or comparatively small doses of the fumigant, and it has gone into extensive use on-ships, since asingle niece of apparatus was made applicable both to the largest hold and to the smallest stateroom.

My present invention is designed to provide another type of apparatus for fumigating purposes which is difierent from that set urth in my copending application above identified, it being among the objects thereof to devise an apparatus therefor which shall be efficient, flexible in that it shall allow of the accurate and rapid measurement of great- 'ly varying doses, and whichshall involve. a minimum amount of skill and effort on the part of the operator.

In practicing my invention I provide a container for the fumigant, which may befa iiquid mixture containing about 20% cyanogen chloride in hydrocyanic acid, and secure thereto a'source of pressure, such as a hand operated air pump. The liquid outlet pipe of the container terminates in a nozzle, Lhrough which the fumigant is sprayed under the pressure Within the container, the said pressure being maintained approximately constant, generally not varying more than say five pounds, whereby the volume of ;iquidpassing through the nozzle is constantwithin very narrow limitshyThe nozzleis normally closed by a spring-pressed valve provided with an operating handlewhich is connected to an indicator mechanism for determining the amount of liquid passing and causing va pointer attached thereto to move over a scale which iscalib-rated as desilred toindicate dosage delivered by the nozz e. livered the operator releases the handlewhich shuts off the flow of fumigant and stops the movement of the escapement mechanism. The apparatus, Without further manipulation by the operator, is ready for anotherop eration. 4 7

In the accompanying'drawings constituting a part hereof and in which like reference characters indicate like parts:

Fig. 1 is a side elevational view of my new apparatus, some parts being broken away for clearness; i

Fig. 2 is a cross-sectional view taken along the line IIII of Fig. 1, and

Fig. 3 is a plan view of the combined valve and closure for the container.

The container 1 is provided with a cover 2 which is threaded into place to make a leak proof joint and has an opening on one side thereof to which is connected tubing 3' provided with a spring-pressed air valve of wellknownconstruction, the fore end of tubing 3 being connected with the hand operated air pump 4. An air pressure gauge 5 is threaded into the top of the cover 2, a cap 6 closes an opening in the said cover, and, a palr of extensions 7 thereon;c0nstitute-handles to facilitate removal thereof. A valve 8 is adapted to close offpipe 9'which extends to the bottom of the container or cylinder, and tubing 10'is connect-ed to'the cover so' that fluid from pipe'9 may flow therethrough when normally closed by a spring-pressed valve 18 within the casing 14, whichc'arries a rearwardly extending projection let, An oper- When'the proper amount has been'deating handle is pivoted to projection 14 at point 16, and has a projection 17 extending into a slot in the stem 18 of the valve 13. A lever 19 pivoted to the handle 15 is suitably secured to a member 20 adapted to operate a latch within the casing. 21 of the indicator.

.The indicator generally includes an escapement mechanism or clockwork which is actuated by a coil spring and the movement of which is controlled by a latch, as is wellknown in the construction of'clock mechanisms. The indicator casing 21 is secured-to pipe 11 by band 22 and it is provided with a key 23 for placing the coil-spring under tension. 'A pointer 24 is secured to the clockwork andis adapted-to move-over the face of T a dial 25: V v

Theoperation of the device is as follows: The container 1 may be filled with liquid by removing the tubing 1O opening'valve' 8 andsecuring in place of 'said tubing ahose connected to the source ofliquid' which is generallyof a toxic character. Cap 6'is'removed and a hose is connected thereto leadi ingto a distant point to act asa vent during Liquid is caused to the? filling; operation. fiow'into thecontainer 1 to the desired point, after which the-connection with the source of liquid is broken and the cap 6 and tubing IO-"arereplaced; Valve 8 is -closed and the pump 4 isactuateduntil the gauge- 5 shows that-theipressure within the container 1- been built up to the desired point, say 25'topounds; In order tofumigate with the apparatus; the operator opens-valve 8, graspsthe dial 2 5. Thedial isicalibrated so that each complete revolution of the pointer 24:

indicates a unit of liquid passing through the at'or merely notes "the-number of revolutions and without any calculation determinesthe number of units whiclrhave been ejected into the 'spac'e being .fumi'gated 'and then releases the handle, thereby cuttingolf the further flow of liquichL-an'd at the'same'time stopping" the revolution of the=poi'nte1"24'. Without any further manipulation the apparatus is ready foranother' fumigation, which is accoinplishe'd merel -by pressingnfthe handle 15:" Only periodically is it necessary to op *erate the pump 4, since the pressurein the" container" does not vary greatly and only a few strokes of'the pumpatrather infrequent intervalsare neeessary tokeep the pressure within the desired ilimits.

Myrinvention provldes' an apparatus which is comparatively inexpensive inasmuch as it utilizes parts of simple construction, most of which are standard and may be readily obtained at low cost. It is an easy matter for the operator to manipulate the apparatus as all he is'requ-iredto' do is to give the pump a few strokes to'bring the=pressurein the" container up to the required point, after which a number of fumigations may be made until the pressure in the container has dropped, say five to ten pounds. The act of fumigation is extremely simple; the operator merely presses the handle and counts the number of revolutions of the pointer or the units onthe dial that it passes and he thus obtainsthe proper dosage.- The" measurement a of the doses is rapid and accurate and no errors creep in regardless of the size of'the' dose;

which mayva'ry within 've'rywide limits; It will be seen that the operation of this apparatus requiresverylittle skill; eifort'or intelligence on the part of the operator.

Although Ih'ave described my invention giving' a detailed description of an apparatus for fumigating; my invention i's not limited to thesed'etails vari'ofu s changes may 0bviou'sly be made therein within departing from theprinciples set forth; For instance,- a different type of' operatin "means for the spring pressed' valve may be used an'd'the irrdi'cator mechanism may beoperated by other than a direct" eon'neetion' with "thehandle and even independently thereofbut 'simuh" taneously therewith: The indications need" notb'e given-by a pointer movingfoventhe face of adial, but some other type of signal maybe given, a for example; the movement of theescapem'ent mechanism may periodically sound abell or the like. Implaceof-"an air pump, one may use a cylinder containi lig 'air or'oth'er ga's under high pressure and connect the sameto thecontarnerthrough regulat= in}; or af reducing valve-whichWill' giye the desired constant pressure on the 7 liquid. Theseand other changes maybe-'made in my invention, thescop'e of which is defined in the claims appended hereto. nozzle under the given pressure. The oper- WhatI'claim is: i p

1. Apparatusfor spraying which c'om-' prises a" container for liquid; means for" pla'cingpressure thereon, a spray nozzle connect ed to said COIlt'flillIGft-O re'c'eiveliq'uid there from, means for c'ontrol iing-thefiow'of liquid through sald nozzle, and-means actuated by forfor controlling the fl'owof liquid thrnugn: said nozzle,- and an indicator actuated "bythe" movement 1 of said handle for indicating-the amount-0f liquidflowing through said nezzlei 3. Apparatus for spraying which comprises a container for liquid, means for placing pressure thereon, a spray nozzle connected to said container to receive liquid therefrom, a valve and an operating handle therefor for controlling the flow of liquid through said nozzle, and an indicator containing clockwork adapted to be released by the movement of said handle for indicating the amount of liquid flowing through said nozzle.

4. Apparatus for spraying which comprises a container for liquid, means for placing pressure thereon, a spray nozzle connected to said container to receive liquid therefrom, a valve and an operating handle therefor for controlling the flow of liquid through said nozzle, and an indicator adapted to be actuated by the movement of said handle during the period when liquid is flowing through said nozzle to indicate the amount thereof.

In testimony whereof, I have hereunto subscribed my name this 14th day of August,

CHARLES D. COLLINS.

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