US1633306A - Spraying cabinet and apparatus - Google Patents

Description

1 1,633,305 *June 2l 927 H. G. BARTLING f SPRAYING CABINET AND APPARATUS Filed Nov. 24. l1922 2 sheets-sheet 1 goma/7d @5a/75556@ June 21 1927.

H. G. BARTLING l SPRAYING CABINET AND APPARATUS Filed Nov. 24. 1,922 2 Sheets-Sheet 2 .n mm 246 d. g .f Y,

Patented June 2l, 1,927.

muren STATES l l 1,633,306 PATENT ortica.

HOWARD Gr. BARTLING, OF CHICAGO, ILLINOIS, ASSIGNOR TO PEERLESS PNEUMATICI SYSTEMS, ING., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SPRAYING CABINET vAND APPARATUS.

Application mea November 24, 1922. semi No. 603,055.

This invention relates to improvements in spraying cabinets and apparatus-for use in connection therewith.

The object of the invention is to provide a spray cabinet of such size and construction that the fumes and mist from the spraying will not escape at the sides of the frontopening of the cabinet. p

Another object consists in the provision of means associated with the spraying cabinet for carrying the apparatus for the control. and treatment of air and spraying ingredient.

Another object consists yin theprovision of new and improved apparatus for the treatment of the air used in sprayingv with my improved cabinet. i

A further object consists in the provision of apparatus for the delivery of varnish or other ingredient. j Still another object consist-s in the provision of meansL for the ,automatic heating ,and regulating of the heat of the varnish or other ingredient.

These and other objects will be more fully set forth and described in the following specification and shown in the accompanying drawings, in whichy v Figure 1 is a front elevation of the cabinet and associated apparatus; f

Fig.` 2` is a front elevation of the control and treating apparatus shown on'an enlarged scale, a portion of the air treatment apparatus being shown in section; f

Fig. 3 is a detail of the automatic varnish heat control. n

Lilie numerals refer to like elements throughout the drawings, in which- 10 indicates generally the cabinet having side walls 10a. The side wall is outwardly flanged, and to it is bolted or otherwise suitably secured the inwardly projecting flange 10". This flange prevents escape of spray fumes or mist from the cabinet at the point where they are most liable to escape. In .spraying this mist has a tendency to rebound from some of the surfacesbeing sprayed, and, obviously, the exhaust draft at the edges of the opening is of less effect. .By providing this flange I redirect the fumes into the zone of greater effect of the ex hauster, or permit deposit of the spraying ingredient upon the flange, with its consequent flow back on to the cabinet.

The front of the cabinet, 10, is open, and a floor of the removable shelf 10g may bc provided for the support of the small articles to be sprayed.

The rear wall 1010 of the cabinet 10 has 4 an exhaust port 10h, which is surrounded b v a reinforcing flange 10i. Mounted in the port 10h is the rotatable exhaust fan 12, a'ctuatable .by any suitable means. A

The frontal flange 10e not only projects laterally inward from the side walls at bothV sides of the frontal opening, but also desirably projects laterally outward` beyond the side walls 10, as shown in Fig. 1. Secured to the outwardly projecting lateral portion of this frontal flange 10e at one side of the cabinet are hinges 16 which support a carrier frame or panel 15, .these hinges being rtrolled unit 19, the air-heating unit 20, the

varnish-heating and'heatcontrol unit 21, and the spare parts box 22, carrying on its hinged cover a solvent cup vor holster 23. These units will be more fully.. hereinafter' described. p

In the use of these spraying cabinets, it

is customary to use a spray gun25, or the like, the construction of which forms no part of the instant application. The varnish or other liquid or ingredient supply tube 26 leads to one vport of the gun, while the air tube 27 leads to another port, means being provided with the gun for its control and actuation.

The air purifying unit 18 comprises a separating chamber in which may' be located any desired means for removing the water, oil orother impurities from the air used for spraying.v rIhe air under pressure is supplied to the purifying unit 18 through pipe 30 and purified air is delivered from the purifier 18 by pipe 18, Tie rods 18 serve to secure the heads and cylinder of the purifier in assembled relation.

The pipe 1S leads to the pipe 20a, which leads to the air-heating unit 20. A pipe or tube 19a leads from the pipe l8into communication with the flexible tube 31, which, in turn, leads to the varnish barrel 32, through the boX 33, andis threaded into the side of the varnish barrel, as shown in llt) .operating handle 19e,

Fig. 1. Interposed in the pipe 1S)n is the pressure indicator 19b and also a pressurecontrolling device 19 of conventional construction, which, by manipulation of the will control the pressure flowing .to the `varnish barrel. here is also provided in the pipe 19EL a main shutoff valve 19h and a safety valve 19f located between the pressure regulator 19c and the varnish barrel 32. The 'boX 33 is provided ,with a depending tube ,33a terminating adacent the bottom of the barrel and in communication at its upper portion with the varnish vtube 35, A. pressure discharge valve .33a is located on the box 33 for blow-off of pressureafter the use of the varnish. 'Ihe pipe 2 0a communicates with the air heater .unit 20, in which is provided any suitable `heatingelement, such as .an electric coil, the terminals -20O ,leading through the heater. The tube 27 leads from the air heater to the spray gun, as mentioned above,l a shutoff valve 27a being provided-see Fig. 2. Ihe varnish supply'tube 35 Vleads to the top -of the varnish heater 21, which comprises a cylinder, vor the like, in which is inserted a suitable heating element, not shown, the termina-ls 21 leading lthereinto.

I .find it highly desirable and advisable 1to yregulate the heating of the varnish automatically, as conditions may vary from time i to time, Iand manual regulation Ais not ,satisfactory. For this ypurpose I provide `a heat- .regulating unit, such as shown, for example, in Figs. 2 .and 3,v 4consisting of agtube 40 depending into .the varnish chamber and ,filled with a suitable` amount of liquid. -In

communication .with this tube, and locatedA thereon, is a Bourdon tube 41,'cu-rved or ybent., and carrying atits free extremity an insulated pin 41a. A .bracket 42 is provided, adjustable vertically by means of the .screw 2a extend-'ng to and threadedly engaging :the 'flange l2", rI`he bracket .l2V is provided with a projecting flanged arm 42C, which carries flexible-or resilient metallicstrips 42d, 42e, which are electrically connected with the wires 45, i6 leading 'to a suitable source .of current.y The strips 42d and 42B .are separated by sheets of insulating material 2f and are provided with metallic conttacts 42X and 41-,2Y- beyond the strip 41a and overlies the insulated pin 42a.

vWhen the liquid in'the tube 40 expands sti-,ihciently the Bourdon tube al has a tendency to .-uncoil, and the endliftfing the pin 41a' will ultimately lift the strip 42 yuntil con-tact is broken, and the Icurrent supplied -to the heating tube 40 will fbe discontinued until the yheat of the varnish has dropped below a predetermined point. By adjustment of the screw 42a the metallic strips may be raised 4or-lowered and the temperature cut tuation.

`of my invention, increasing,

`-occurred .in .other apparatus.

The strip 42e projects the spraying end ofthe gun may be inserted after the conclusion of the spraying operations, ythe solvent in the cup serving to wash or clean-the nozzle of the gun Vofany varnish or other adhering substance. Y

In the use of my cabinet, the operator lmay turn on the vcurrent for both 'the heating and;

varnish-heating units, swinging the apparatus carrier 15 to the position -shown in ig. Y

1, where all of the controls are readily accessible and visible during the spraying ac- 'Ihis is a very meritorious feature as -itdoes, the ease and eciency of use ofthe spraying vapparatus. Y rlh-e safety valve 19f,vbeing llocated away from the varnish barrel, is not ,in danger of being clogged bythe varnishl or other ingredient, and consecpuentlyl is free to operate at any desired'pressure,rthereby eliminating the danger of explosions or destructicn of the varnish barrels, ashasSQmetimes It will be obvious tht. lyfinvention is susceptible .of modification Vand alteration;

and 'I do not 'therefore wish :to vbe restricted to theappar'atus and structure shown Vand described, except as defined in the appended claims- 1'. A spraying cabinet ha-ving a frontal opening formed by an inverted .Ll-shaped flange extending downwardly from :the'top of the cabinet and laterallyinward lfrom each side wall of the cabinet the said top and the side walls 'beingiinperforate and ad- ]oined to lthe lsaid frontal portion; and a suction -fan mounted substantially centrally in the `rear of thecabinet and arr.ang';ed for drawing air ,rearwardly ,through the cabinet.

2.' In combination with a spraying cabinet, a spray means, a supply of spraying 1ni gredient, control-ling apparatus, a carrier h'ingedly secured 'to said cabinet, said apparatus being carried thereby, and flexible tubing connect-ing said spraying means and ingredient Asupply with said apparatus;

In combination with a spraying cabinet, a spraying means, a solvent holster carried by said cabinet, said holster bein?, Constructed and `arranged to permit insertion ofy said spraying means.

In testimony whereof, jI have subscribed my name f HOWARD G. BARTLILNG.

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