US2642317A

US2642317A - Spray gun

Info

Publication number: US2642317A
Application number: US206668A
Authority: US
Inventors: Edward E King
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-01-18
Filing date: 1951-01-18
Publication date: 1953-06-16
Anticipated expiration: 1970-06-16

Description

June 16, 1953 E. E. KING 2,6

' SPRAY GUN Filed Jan. 18, 1951 2 Sheets-Sheet i mmvrox,

E. E. KING SPRAY GUN June 16, 1953 Filed Jan. 18, 1951 2 sheets-sheet 2 Patented June 16. 1953 l NITED ISPRAY Edward 1:. King,-lLos Angeles, cam. Appllcatlon hnuary 18, 1951, Serial No. 206,668

devised for alleviating this situation the present invention-has been developed to more' efficien'tly and satisfactorily overcome this problem.

It is therefore an object of the invention to provide novel and improved means for dusting printed sheets with a powder or other substance which effectively prevents smearing of the ink of ing and removing sheets'lprinted by press in, which sheets are deposited' in a stack formation 12 at the end of the press. Apasting 13 @0131- prises the-cover of a powder supply tank M and -is formed with a bore l and ablock; .16,

the latter having one or more holes :I :l to receive a bracket member 18 :b'ywhich the supply tank may be supported from a frame member 13 of the printing press 1 0. member 1:1 being secured the printed sheets and also keeps the sheets from sticking together.

Another object of the inventionis to provide improved apparatus for dusting printed sheets with a substance to prevent smearing, which apparatus may be readily positioned for operation on existing printing presses and which apparatus may be adjustable to accommodate to varying printing press conditions.

An additional object of the invention is to 4 provide a novel dispersion chamber and nozzle for spraying a powder or other substance onto printed sheets for preventing smearing and sticking of the sheets occasioned by the fresh Figure 2 is a bottom view of the dispersion chamber and nozzle unit shown in Figure 1.

Figure 3 is a plan view with the top plate removed of the dispersion chamber shown in Figures l and 2.

Figure 4 is a perspective view. of the top of the powder supply tank and the supporting means for the dispersion chamber.

Figure 5 is a partial sectional view taken along the line 55 of Figure 4.

Figure 6 is a sectional view taken along the line 6-6 of Figure 4.

Figure 7 is a perspective'view of one of the spray nozzles shown in Figure 1.

Figure 8 is a sectional view taken along the line 8--8 of Figure 7. p

Figure 1 of the drawing shows a printing press l9 having a conveyer mechanism II for receivjto block it by a wing screw 2'0 :or in otherrqu'ivalent manner.

A pipe or tube 2| for the supply of air under pressure is suitably connected to one endof bore l5 and a discharge pipe 22 extends from the other end of bore l5 and is connected to a pipe 23 by extending into the split threaded end 24 thereof, a clamping nut 25 being so arranged as to compress end 24 against a sealing ring 26 on the end of pipe 22 whereby to effect a sealed connection between the two pipes, pipe 23, however, being longitudinally adjustable with respect to pipe 22. A casting l3 has a pair of openings 21 which communicate between bore 15 and the interior of tank I4 and a pair of valves and 29 are provided for controlling the flow of air into tank l4 and a supply of air-borne powder from tank l4 into discharge pipes 22 and 23.

A dispersion chamber 30, generally in the form of a fiat cylinder, is secured to a pipe 23 and has an inlet connection 3| of conventional type and is formed with a dispersion chamber cavity 32 and has a cover plate which may be'removed. A plurality of

bores

33, 34 and 35 extend through the bottom of the chamber 30 and are connected to swivel fittings 36 and 3! to which are connected a plurality of

nozzle tubes

38 and 39 respectively as shown in Figures 1 and 2.

Tubes

38 and 39 have downwardly directed ends 40 to whichare connected nozzles 4 I, each formed with a concave recess 42 and a plurality of discharge passages 43 and 44, the latter being arranged concentrically about the central passage 43. A bafile 45 is positioned in cavity 32 to deflect the flow. from pipe 23 and the side walls of the cavity are directed inwardly as shown whereby an even distribution of the dusting powder is directed to bores 33, 34 and 35.

The operation of the invention should be clear from the foregoing description. A supply of suitably selected dusting powder is placed in tank I4 and a supply of air under pressure connected to pipe or tube 2 I. Valves 28 and 23 may besuitably adjusted and upon the operation of the printingpress a supply of air-borne powder will be discharged from each nozzle 4|. As can be seen in Figure -l,tubes 39 are longer than and described the preferred form of this invention, it is to be understood that minor changes" in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed. g

I claim:

1. Dusting apparatus for printed sheets comprising, in combination, a tubular supporting arm through which dusting material is caused to travel, a flat cylindrical body having a shallow dispersion chambertherein, a radial inlet to said chamber having an end of said tubular arm connected therewith for discharge into the chamher, said body having a plurality of outlet ports opening from said chamber through one flat side of the body, a plurality of nozzle tubes each having one end swivelly'connected in an outlet port and extending outwardly from the body, said tubes being disposed in a common plane parallel with said one flat side of the body and swingable in said plane to extend in different directions from. the body, and a downwardly directed discharge nozzle carried upon the outer end of each tube.

2. The invention according to claim '1, wherein said flat body has an outlet port at the axial center thereof, a swivel coupling in said center port, a pair of oppositely extending nozzle tubes carried by the central swivel coupling to turn ,as a unit with the coupling, and a nozzle upon the outer end of each of the last named tubes.

3. The invention according to claim 2, wherein the first named outlet ports are arranged in a circle around said center port and wherein the first named nozzle tubes are of greater length than the said pair of oppositely extending nozzle tubes.

EDWARD E. KING.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,041,627 Thompson May 19, 1936 2,105,275 Thompson Jan. 11, 1938 2,123,537 Marr July 12, 1938 2,339,899 Wilson Jan. 25, 1944 2,496,194 Bennett Jan. 31, 1950