US2511021A - Spray gun swivel mount - Google Patents

Description

June 13, 1950 H. c. STQCKDALE SPRAY GUN SWIVEL MOUNT Filed March 13. 1946 656: J7'0CA D4ZA' INVENTOR.

Patented June 13, 1950 SPRAY GUN SWIVEL MOUNT Harry C. Stockdale, Ravenna, Ohio, assignor to Food Machinery and Chemical Corporation, a

corporation of Delaware Application March 13, 1946, Serial No; 653,990

3 Claims. 1

This invention relates to spray gun mountings and it is a particular object thereof to provide a novel and efficient spray gun swivel mount for mounting a spray gun on a hollow mast whereby the gun may be supplied with liquid from the mast, and may be given any desired rotational adjustment relative to said mast about the axis of said mount.

The manner of accomplishing the foregoing object, as well as further objects and advantages, will be made manifest in the following description taken in connection with the accompanying drawings in which:

Fig. 1 is an enlarged fragmentary cross sectional view of the novel liquid conducting swivel connection of the invention, which is shown employed as a mounting of an individual spray gun on a hollow mast for supporting said gun and supplying liquid thereto.

Fig. 2 is a vertical sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is a fragmentary horizontal sectional view taken on the line 33 of Fig. 1.

Referring specifically to the drawings, the invention is there shown as embodied in means for mounting a spray gun on a hollow mast II.

The mast II is provided at spaced intervals with holes 9I in which are welded internally threaded sleeves 92. A spray gun 93 is rotatably mounted on the mast II by a hollow spindle 94, the extending threaded shank 95 of which is screwed into one of the threaded sleeves 92.

The spindle 94 has an axial water passage 96, the inner end of which terminates in a square wrench recess 91. Surrounding this recess is a spindle head 98 from the periphery of which an annular cylindrical flange 99 extends in spaced relation with the shank 95 to form an annular packing recess I00. The outer surface of the shank 95 is relieved centrally to form an annular grease pocket MI.

The spray gun 93 may be of any high pressure spray gun construction but preferably has a spray forming mechanism of the type disclosed in my U. S. Letters Patent, No. 2,362,946 issued Nov. 14, 1944. The gun 93 includes a body I08 providing a liquid receiving chamber I09, this being connected to the exterior of the gun by a threaded hole H and by a threaded opening I II concentric therewith. Also formed in the body I08 is a threaded opening H2 in which a gun barrel H3 is screwed, this barrel having a spray forming nozzle II4 provided on its tip.

The body I08 also provides a stufling box IIB which is coaxial with the barrel I I3 and includes a threaded gland H9. Extending through the stuffing box H8 is a spray gun control shaft I29 having threads I2I- which have threaded. engagement with the gland H9 and a handle I22 on its outer end. Mounted on the inner end of the shaft I20 is a whirl plunger I23 which cooperates with the nozzle I24 to form sprays varying in character, as this whirl plunger is advanced towards or away from the nozzle H4, by rotation of the handle I22, in the manner clearly pointed out in my U. S. Letters Patent aforesaid.

Screwed into the threaded hole H0 is a bearing I30 having an outer shoulder I3I which traps a ring of packing material I32 in an annular recess I33 formed in the body I08 around the outer end of the hole IIO, thus forming a liquid tight seal between said bearing and said body.

The bearing I30 has a bore I40 in which the spindle 94 rotatably journals, this bore having an annular grease passage I4I cut therein with which a zerk fitting I42 provided in said bearing communicates.

Extending inward concentrically from the inner end of bearing I30 are cylindrical flanges I43 and I44 between which an annular packing recess I45 is provided. The spindle head flange 99 is adapted to make a close sliding fit with the walls of the recess I45 while the annular flange I44 likewise extends into the annular recess I00. Suitable rings I and I5I of packing material are placed in the recesses I00 and I45 so that when the spindle head 98 and bearing I30 are forced axially together, as by liquid pressure within the chamber I09, a fluid tight fit is formed between the nipple and the bearing which prevents the escape of liquid from the chamber I09 between these elements.

The opening III is normally closed by a screw plug I52. When this plug is removed, it gives access to the spindle 94 for the insertion of a wrench into the recess 91 for the purpose of screwing the spindle 94 into or out of the threaded sleeve 92.

Extending downwardly from the gun body I08 is a lug I53 having an arm I 54 from which a pin I55 projects parallel with the axis of the spindle 94. The pin I55 may be utilized for the pivotal connection to the gun 93 of a suitable control member (not shown) for adjusting the rotational position of the gun 93 relative to the mast 'II about the axis of the spindle 94.

I claim:

1. In a spray gun swivel mount, the combination of: a nozzle mount body forming a chamber for receiving liquid under high pressure, there being a hole in said body opening into said chamber and a discharge passage opening out of said chamber; a tubular bearing element insertable into said hole; means for securing said element in said hole to make a fluid tight connection between said element and said body; a hollow spindle journalling in said bearing and having a head on its inner end which prevents said spindle from being withdrawn outwardly through said bearing, said head being smaller in diameter than said hole in said body; a pair of concentric and cylindrical flanges formed on the inner end of said bearing element, an annular recess being formed between said flanges; and an annular cylindrical flange formed on said spindle head which slideably and rotatably fits into said recess for the purpose of forming a seal between said head and said element.

2. A combination as in claim 1 in which a ring of packing material is disposed in said annular recess to be engaged by said head flange to perfect said seal.

3. A combination as in claim 2 in which an annular recess is formed on said head inside said cylindrical head flange, said head recess being adapted to slideably receive the inner cylindrical flange of said bearing element; and a packing ring in said annular head recess, said packing rings being simultaneously brought under pressure by relative axial movement between said element and said spindle.

HARRY C. STOCKDALE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 422,017 Harris et a1. Feb. 25, 1890 860,529 Corlew July 16, 1907 927,837 Delene July 13, 1909 1,023,852 Johnson Apr. 23, 1912 1,038,396 Langford Sept. 10, 1912 1,310,733 Bore et al July 22, 1919 1,946,698 Johnson Feb. 13, 1934 2,122,559 Dapero et al July 5, 1938 2,193,338 Magnuson Mar. 12, 1940

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