US1327299A - Paraffining-machine - Google Patents

Description

F. P. VAVRA.'A

PARAFFINING MACHINE. APPLICAUON'HLED JuLY 22,1918. RENEwED 110V.. 1.1919. 1,327,299.4

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3 SHEETS-'SH Patented Jan.

F. P. VAVRA.

F.Amrrmme MACHINE. APPLICATION HLED'YPULY-ZZ 1918' RENEWED NOVI hl'glg 1,327,299. Patented Jan. 6,1920.

3 SHEETS-SHEET 3- mmm.

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FRANK P. VAVRA, 0F CONGRESS PARK, ILLINOIS'.

rARAFrmING-MACHINE.

Application led July 22, 1918, Serial No. 246,0 1'5. l

To all whom it may concern: j

Be it known that I, FRANK P. VAVRA, acitizen of the United States,i and a resident of Congress Park, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Paraining-Machines, of which'the following is a full, clear, and exact specication.

My invention is concerned with machines of the general type shown in .the Vavra Patent No. 1,198,976 for applying paraiiin or the like to paper or carton blanks, and is designed to prduce a machine ofthe class described that shall be small, simple in its construction and yet capable of doing entirely satisfactory work.

To this end it consists of a pair'of gaging rollers journaled in the same or substantially the same horizontal plane, geared and spring-pressed together, and preferably both dipping into-a pair of adjacent, but slightly separated tanks, orinto a common tank .having a vertical discharge passage therethrough extending 'from between the diverging angle of the rolls to the bottom of the tank, in combination with a cooling water tank having one end thereof beneath the araliin tank'or tanks so that the carton or lank passing down between the rollers shall pass directly to the engaging angle of the cords that carry the cartons or blanks through the cooling water tank. .4

To conserve the heat, I preferably provide a cover for the tank or tanks, with an entrance slot therethrough and suitable guides for the blanks so that when they are fed mechanically or manually into the guides, they will pass between the gaging rollers and directly to the cooling tank.

To illustrate my invention, I annex hereto three sheets of drawings in which the saine reference characters are used to designate identical parts in all the figures, of which-d 'Figure 1 is a longitudinal section on the line 1-1 of Fig. 2;

Fig. 2 is a top plan view of the same in section on the line 2-2 of Fig. 1;

Fig. 3 is a vertical section on the line 3- of Fig. 2, and

Fig. 4 1s a detail View showing the gears ing at the cnd of the machine'seen in the lower portiouof Fig. 2.

In carrying 'out my invention in its preerred form. I employ a generally rectangular frame 10 supported upon suitable legs, not shown, and inside of the ame sup- Speciiication of Letters Patent.

Patented Jan. 6,1920.

Renewed November 1, 1919. serial No. 335,110.

a carton dropped with its edge intqt-,he en gaging angle 17 will be seized by the cords 15 and 16 and carried down lthrough the cold water and discharged at the other end in the manner which is customary in machines of this character.y The water cooling tank and the associated carton carrying mechanism thus far described may be of any desired construction. V

Mounted in the 'end of the framework 10 adjacent to the engaging angle 17 is a rod -18 which has fulcrumed on the ends thereof.

the swinging frame vmembers 19 and 20, these frame members being provided with `the ears 21 projecting from the rear thereof to engage the shaft 18.- At the other end of the frame' members they are provided with the forks or slots 22 through which pass the bolts 23, pivoted at their lower ends to the frame 10 and provided on their threaded upper ends with the wing nuts 24 by which the swinging frame may be secured in its rigid position, the exact level being determined, if. desired', by set screws 25 threaded through the frame pieces near the forks 22 and having their lower ends engaging the top of the frame 11. j'

Journaled in the bearings 26 formed` in the frame pieces 19 and 201s a shaft 27 provided on one end with a belt pulley 28 or other suitable'driving means and on the other end with a spur gear wheel 29 which meshes with a similar spur gear wheel 30 secured on the end of the parallel shaft 31` mounted'in the sliding bearings 32, which bearings are mounted to slide in the waysv 33 formed in the frame pieces 19 and 20. The exact position of the shaft 31 is determined by the pair of helically coiled compression springs 34 mounted at one end in the recesses 35 of the frame pieces 19 and 20 and having their other ends cooperating with the lugs 36 projecting from the adjacent sides of the bearings 32, together with the companion pair of similar springs 37 l the set screws 39 which are threaded through the ears carried by the frame pieces 19 and 20. The collar 41 pinned on the screw 39 coperates with the end of the spring 37, and the lock nut 42 serves to secure the set screws 39 in any desired position of adjustment. It will be obvious that with the construction described, the shaft 31 1s held yieldingly in a certain fixed relationship to` the shaft 27, and rotates therewith.

Secured on the shafts 27 and 31 are th companion rolls 43 and 44, which are preferably hollow metal rolls having ontheir surface a layer of felt or some similar fiber 45, of the thickness of say one-quarter of l'an inch, such rolls suitably pressed together,r

being known in the art as gaging rolls.

Located beneath the rolls 43 and 44 and supported upon the end of the frame 10 is a tank 45a, which is filled with melted paraffin to a level determined by the overiow pipe 46 extending upthrough the bottomy thereof and having the lower end 47 thereof located to discharge .into any desired overflow receptacle. While I might use a pair of tanks, one for each of the rolls 43 and 44, with their adjacent edges slightly supported, I preferably employ f the single tank shown, and provide a passage 48 through the center thereof, this passage being conveniently formed by cutting an aperture 49 in the bottom of the tank proper, and soldering to the adjacent edges of the bottom the metal sheets 50, which converge, as shown in Fig.

- 1, and are closed toward their ends by the vertical metal. pieces 51 soldered thereto. They have the inclined top portions 52 which are -inclined toward the ends of the tank to carry back to the paraiiin tank any droppings lfrom the ends of the rollers 43k and 44; To melt the. paraffin, and keep it in its melted state, I provide a steam supply pipe 53 at.one end of the machine which is connected to a set of continuous steam pipes 54 which form a continuous passage for steamto the steam discharge pipe55, so that the steam can circulate through the pipes 54. To conserve the heat of the melted paraffin, I preferably cover the tank by a sheet metal cover 56, having the elongated aperture 57 through the top thereof, and conveniently secured -in place by the set screws 58 threaded through the end pieces 19 and 20 and cooperating with the recesses 59 in the ends of the cover 56. To limit the amount of melted paraiin carried up by the outer sidesof the rollers 43 and 44, I preferably extend across the tank adjacent said' edges the scraper bars 60.

The blanks to be treated are preferably piled on'the feed board' 61 supported at an angle by the arms 62 on the frame, and if the cartons are to be fed in autOmfitC-lly, I.

wheel 66 secured on the end'of the shaft 64.

Extending between the frame pieces 19 and 20 and secured therein is the spacing rod 67 which has mounted thereon at suitable intervals the wire fingers 68 having their ends extended into the slot 57 of the cover, and opposed to these fingers 68 and coperating therewith are similar wire fingers 69 likewise extending through the aperture 57 and supported from the bottom -of the feed board 61. l

The' shaft 27 is provided on one end with a miter gear 70 meshing with a miter gear 71 secured'on the shaft 72 and extending to the other end of the framework 10 and connected to the gearing by which the cords 15 and 16 are driven in the manner customary in this class f machines. p

The operation` of the complete apparatus will be readily apparent to those skilled in the art. The rollers 43 and 44 rotate toward each other on their top-sides and grip any cartons that may be fed down to them'between the fingers 68l and 69 and through the aperture 57. The felt covering of these. rollers carries up a certain amount of the melted parafiin, anyl excess being removed by the scraper bars l60 and this is applied to the blanks as they-pass between the rollers, any excess of the paraiiin being removed by the felt surfaces expanding after they have been squeezed by the pressure existing between them and the carton blank. The blanks with they definite amount of paraffin thus applied pass down through the paage `48 and are' dropped with their forward edges loo into the water in the cooling tank 11 and" I into the engaging angle of the cords 15 andl 16, so that the blanks While the melted paraiin is still hot on their surface enter immediately into the cooling water and arecooled very suddenly by theirpassage therethrough.

It will be obvious'to those skilled in the art that by thea'pparatus I have thus produced, I ain/able to apply a certain fixed amount ofparaffln to the blanks, depending upon the pressure applied to the rolls by vention as embodied in the form that I at present consider best adapted to carry out its purpose, it will be understood that it is capable of some modiications, and that I do not desire to-'be limited in the interpretation of the following claims except as may be necessitatedby the state oi' the prior art. 1

What I claim as new, Iand desire to secure' by Letters Patent of the United States is:

1. In an apparatus of the class described, the combination with a cooling water tank having carton carrying means mounted therein, of a parafin tank directly over the receiving end of the cooling water tank, a, pair of gaging rolls journaled in the top ot' the paraffin tank in the same or substantially the same horizontal plane' and having their lower sides dipping in the parafl n, gearing tol rotate the rolls in unison, andmeans for regulating the pressure between the rolls, said tank having a discharge passage through the bottom thereof extending from thediverging angle of the rolls to the top of the cooling water tank.

2. In anappa-ratus of they class described, the combination with a cooling Water tank having carton v carrying means mounted therein, of aparain tank directly over the receiving end of the cooling water tank, a

pair of 0raging rolls journaled in the topof the parain tank in the same or substantially the same horizontal plane and having their lower sides dipping inte the parafin, gearing to rotate the rolls in unison, means for regulating the pressure between the rolls, said tank having a discharge passage through the bottom thereof extending from the diverging angle of the rolls to the top of the coolin g water tank, a cover for the paratiin tank guides` extending through said slot and to the receiving angle of the rolls.

3. In an apparatus of the class the combination with a cooling water tank having carton carrying means mounted therein,'of a paratlin tank directly over the receiving end of the cooling water tank, a swinging frame pivoted at its outer side to the adjacent end of the cooling water tank frame, a pair of gaging rolls journaled in said pivoted frame in the same or substantially the same horizontal plane and having their -lower sides dipping into the paraliin, gearing carried by said .pivoted frame to rotate the rolls in unison, means also carried by the pivoted frame for regulating the pressure between the rollers, the paraffin tank having a discharge passage through the bottom thereof extending from the diverging angle of the rollers to the top of the coolingwater tank, and means for securing the pivoted frame in position.

In Witness whereof I have hereunto set my hand and aliixed my seal this 20th day of July A. D. 1918.

FRANK r.' vAvRA. [La] Witnesses: v

- C. M. .STUMCKL .TNQ-G.- Emorr.

described,y

aving a receiving lslot therein, and

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