US2579842A - Wax distributing applicator - Google Patents

Description

E- 25, 1951 w. J. LUNDBERG WAX DISTRIBUTING APPLICATOR Filed Sept. 14, 1948 f 27 INVENTOR. 5 'MLL am J. Lam/0552s HTTO/EWEY Patented Dec. 25, "1951 UNITED STATES, PATENT OFFICE 2,579,842 WAX DISTRIBUTING APPLICATOR William J. Lundberg, Warren Point, N.

Application September 14, 1948, Serial N 0. 49,281

3 Claims.

My invention relates to applicators and more particularly to applicators for applying and distributing wax and the like to the cloth receiving surfaces of screen printing tables.

In screen printing, the top of the table is usually provided with a fabric or padding on which the cloth to be printed is attached and held in fixed relation therewith during screen printing operations. In order to secure the cloth to the padding in a manner to permit ready removal of the cloth from the table after printing, a plastic material, for instance wax, is employed and which material is distributed over the cloth receiving surface of the padding in a somewhat pliable condition to insure retention of the cloth to the table and its ready removal thereafter.

One of the objects of my invention is to provide an applicator for distributing plastic material or the like over the surface of the padding of a screen printing table in order that the cloth to be printed may be secured to the table in fixed relation when disposed over the wax coated padding.

Another object of my invention is to provide an applicator of the foregoing described character equipped with means for heating the wax or the like in order that the same may be evenly distributed over the fabric.

A further object of my invention is to provide an applicator of the foregoing described character provided with means whereby the wax or the like is heated to a-predetermined degree for distribution.

A still further object of my invention is to provide an applicator of the foregoing described character equipped with means for automatically limiting the heating of the wax or the like to a predetermined degree.

An important object of my invention is to provide an applicator of the foregoing described character which is simple in construction, durable in use, efiicient in operation and economical in manufacture.

With the above and other objects in view, as will hereinafter appear, the invention consists in the combination and arrangement of parts hereinafter set forth and illustrated in the accompanying drawings from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

Referring to the drawings wherein like reference characters designate like parts throughout the several views:

Figure 1 is a top plan view of my invention as applied to a screen printing table.

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

Figure 3 is a detail sectional view taken on the line 3-3 of Figure 1.

In practicing my invention, as illustrated in the drawing, I provide a screen printing table 5, an upper fragment thereof being illustrated as equipped with a top 6 on which is disposed a fabric or padding 1. The top 6 is provided with the usual lateral guide rail 8 which serves to effect positioning of the printing frame during screen printing operations.

In order to apply plastic material, for instance, wax to the upper surface of the padding 1 for retaining cloth to be printed to the table against displacement during such printing, I provide an applicator [0 comprising a pair of spaced longitudinal side frame members or runners ll having their outer ends curved downwardly and inwardly as illustrated in Figure 2. Connected between the runners are a pair of spaced transverse metallic tubular frame members or tubes I! which cooperate with the runners II and the table to define a reservoir I3 for receiving a wax W. Each of the tubes I2 is secured in fixed relation at its ends to the runners and is provided with a removable screw plug [4 closing an opening in the peripheral wall and through which opening a suitable heat retaining fluid I5, for instance oil, is introduced and maintained within the respective tube. Extending centrally through each of the tubes I2 is an electrical heating unit 16 having a tubular casing to the switch mechanism by means of tubing or a pipe 2| whereby air or a suitable gas inthe chamber, when heated to a preestablished degree, is effective for operating the switch mechanism, it being understood that the latter is operated to i make and break the circuit leading to the heating elements from a source of electrical energy connected tothe mechanism by means of wiring 22 leading into the box I 9. Inasmuch as the switch mechanism, heating units and the connecting components are of an ordinary construction and form no part of the present invention per se, a detailed disclosure of the same is not deemed necessary.

The ends of the runners II are provided with handles 23 whereby the device may be operated over the table for distributing wax contained and heated within the reservoir l3. One of the runners H is also equipped with a pair of roller brackets, 24 each of. which have mounted thereon a pair of rollers25 embracing the rail 8 for tracking engagement therewith to effect and insure guiding of the applicator over a preestablished path on the table 5.

I also employ a spreader 26 which comprises a plate having an arcuate lower end section 21 conforming to the contour of the tubes l2 and which section 21 embraces the rearmost tube about the inner portion of its peripheral face with respect.

to the direction of gravelgof the'applicator. The uppersection; ofjthe spreader :26 extends; above the tubes and runners and is equippedyat its upper; end with a bar 28 terminating at. its ends in a pair of handles 29 or the like to facilitate removal of the spreader from between the runners, it being understood that the spreader is frictionally retained between the runners and in engagement with the respective tube. Furthermore, the spreader is detached from engagement with one tube and arran ed inlike engagement with the other when the direction of travel of the applicator is reversed. The lower end of the spreader 26 extends outwardly and slightly beyond the lowest point on the .rearmost tube l2 to provide-a space between said tube [2 and the lower end of the spreader to preclude the wax from adhering to and building up on the outer peripheral face of the rearmost tube, while the upper end of the spreader terminates in a plane above the highest point of the tube, thus the spreader functions to insure even distribution of the wax upon the surface of the padding and to preclude, overflowing of the wax over the rear tube. as the, applicator is operated over the paddi In us,e.-ass uming the applicator to be positioned upon a table over. the padding-a selected quantity of wax W is deposited Withinthe reservoir [.3 with the spreader 26 being disposed in engagement with the. rear tube withv respect to the direction of travel of the applicator. When the wax is thus. deposited, electrical energy is. supplied for operating the heating. elements whereupon-the tubes l2. and oil [5, therein are heated with. the result. that the wax isheated to. a degree to obtain a desired fluid condition thereof for spreading. When the wax is thus heated, the switch mechanism operates in response. to the. heat within the thermal chamber of the housing 2llto break the circuit and to. close the latter when the temperature is materially lowered, it being understood that the switch mechanism. is so arranged to operate in response to preselected degrees of temperature dependent upon the type of wax or material being used. When the wax has thus been heated to the proper consistency for spreading, the applicator. is moved over the padding to apply and spread the wax thereon, it being understood that the applicator is operated from one end of the table to the other and vice-versawith the spreader being disposed, in each instance, in engagement with the rear tube l2 as heretofore described.

Without further elaboration, the foregoing will so fully explain the invention that others may, by. applying. current knowledge, readily; adapt. the

4 same for use under various conditions of service. Moreover, it is not indispensable that all the features of the invention be used conjointly since they may be employed advantageously in various combinations and subcombinations.

It is obvious that the invention is not confined to the herein described use therefore as it may be utilized for any purpose to which its is adaptable. It is therefore to..be understood that the invention is'notlimited to the specific construction as illustrated and described, as the same is only illustrative of the principles involved which are capable, of extended application in various forms, and the invention comprehends all construction within the scope of the appended claims.

What I claim is: I. An applicator for applying wax to the upper surface of a screen printing table or the like equipped with a lengthwise extending guide, rail, comprising a frame. having a pair of spaced runnersfor longitudinal sliding operation over said surface from one end of said tableto the other, and a pair of spaced tubular members extending transversely with respect. to said runners and connected to-v the latter in fixed relation therewith andwith one. of said members constituting a rear member in relation to the direction of operation of said runners over said surface, said runners-and-said members cooperating to define the sides of a reservoir for the/wax when said runners are disposed on said surface for sliding operation thereon, rollers carried by one of said runners for engaging said guide rail for guiding the applicator over said, surface, electrically heated units disposed-in.said membersrespectively for heating; fluid contained in, said, members whereby wax contained in said reservoir is heated V for spreading onto; said surface, and a spreader arranged between said runners and having a lower arcuatesection disposed under and in engagement with said rear member to effect spreading of the wax from said reservoir onto said surface. below saidrear member, said arcuate section extending outwardly from saidreservoir andterminatingbeyond the lowest point of said rear member to preclude the wax from adhering to; said. rear 'memberduring said, operation.

2 .v Anv applicator for applying plastic material over theupper. surf-aceof a screen printing table or the; like, comprisin a frame having a pair of spaced runners for longitudinal sliding operation over said. surface. from one end of said table tov theydtheniand a pair 'of spaced members extending; transverselywith respect to said runners and connected to the latter in; fixed relation therewith and with one of said-members having an arcuatejunderfaee and constituting a rear member, in relationjto. the direction of operation. of said: runners: over said-v surface, said. runners and said: members cooperating to; define the sides of a reservoir for thematerial when said runners are disposed. on, saidsurface for sliding operation thereover, heating means, dis.- posed in at least one of saidmembers forheating the material in said reservoir, and a, spreader arranged between saidrunners. and, having. a

curved lower sectionembracingly disposed. underv and in engagement with said underface of said rear member to effect spreading-of the material from said reservoir onto said surface below said rear member, said lower section. having an. end portion extending outwardly-from said. reservoir and: terminating beyond and rearwardly of said rear member to; precludethe material framed-.-

hering to said rear member during said operation.

3. An applicator for applying plastic material over the upper surface of a screen printing table or the like, comprising a frame having a pair of spaced runners for longitudinal sliding operation over said surface from one end of said table to the other, and a pair of spaced members extending transversely with respect to said runners and connected to the latter in fixed relation therewith and with said members having arcuate underfaces and constituting front and rear members in relation to the direction of operation of said runners over said surface, said runners and said members cooperating to define the sides of a reservoir for the material when said runners are disposed on said surface for sliding operation thereover, heating means disposed in at least one of said members for heating the material in said reservoir, and a spreader detachably retained between said runners and having a curved lower section embracingly disposed under and in engagement with said underface of said rear member to effect spreading of the material from said reservoir onto said surface below said rear member, said lower section having an end portion extending outwardly from said reservoir and terminating beyond and rearwardly of said rear member to preclude the material from adhering to said rear member during said operation, said spreader being detachable from said rear member to dispose said lower section under said front member upon reversal of said direction of operation.

WILLIAM J. LUNDBERG.

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

UNITED STATES PATENTS Number Name Date 89,122 Brown Apr. 20, 1869 699,307 Grippin May 6, 1902 1,831,763 Dickerson Nov. 10, 1931 2,133,390 Kotcher et a1 Oct. 18, 1938 2,291,691 Caufman Aug. 4, 1942 2,301,619 Davis Nov. 10, 1942 2,387,984 Eddy Oct. 30, 1945 2,400,681 Bristol May 21, 1946

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