US1173181A - Tin-sheet-paraffining machine. - Google Patents

Description

J. M. DE VOE. TIN SHEET PARAFFINING MACHINE.

'APPUCATION FILED JAN. 24.1913- Patented Feb. 29,1916.

5 SHEETS-SHEET I.

J. M. DE VOE.

TIN SHEET PARAFFINING MACHINE.

APPLICATION FILED man. 1913.

mmmlmr Patented Feb. 29, 1916.

5 SHEETSSHEET 2.

1. M. DE VOE.

. T IN SHEET PARAFFlNING- MACHINE.

'APPLICATION FILED JAN. 24 1913- w 1,173,1 1, Patented Heb. 29,1916.

5 SHEETS-SHEET S.

J. M. DE VOE.

Patented Feb. 29, 1916.

5 SHEETSSHEET 4.

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TIN SHEET PARAFFINING MACHINE.

APPLICATION FILED JAN. 24. 1913.

Patented Feb. 29,1916.

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JOHN M. DE VOE, OF CHICAGO, ILLINOIS, ASSIGNOR TO WEYMAN-BRUTON COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

TIN-SHEET-PABAFFINING MACHINE.

Specification of Letters Eatent.

Patented Feb. 29, 1916.

To all whom it may concern:

Be it known that 1, JOHN M. DE Von, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Tin-Sheet-Paraflining Machines, of which the following is a specification.

This invention relates to improvements in machines especially adapted for use in paraflining the surface or surfaces of tin in sheet form, preparatory to its being stamped or otherwise worked into shape. It will be understood, however, that other material,

either in sheet or web .form, such as strawboard and the like, may be equally well coated, by the use of the machine forming the subject-matter of this invention.

1 am aware that difierent devices have been employed for the purpose of applying paraflin in a liquid state, t0,the surface of manufactured. articles. Such mechanisms have been objectionable, in that they have been complicated in construction, wasteful in use, unsuccessful in respect to applying a complete and uniform, coating, and limited in capacity of out-put.

I-have found that by using the paraffin from the cake, or in a congealed state, that it can be worked more economically and to better advantage, and the object of my invention is to overcome the objections above enumerated and to provide a simple, durable and efficient machine for the purpose.

Briefly and generally stated the invention comprises a coating machine of the character stated, embodying means for feeding and supporting a sheet or web of the material to have a coating applied thereto, adjustable means for supporting a cake of the coating substance or material and rotary means movable in surface contact with the said cake of coating material and with the surface of the 'sheet or web for applying said material to the sheet or web.

The invention resides further in the provision of means for automatically and for manually adjusting the position of the cake supporting means relative to the rotary applying means, whereby the quantity of coating material applied to the sheet or web may bevaried at will to suit the conditions required, the said adjusting means being independently operable The invention resides further in improved means for supporting the web or sheet as it passes through the machine, and

in improved means for maintaining the sheet in contact with the rotary applying and brushing or finishing devices.

The invention resides further in the features of construction and in the combinations and arrangement of parts hereinafter described in detail and then more definitely pointed out in the claims.

Referring to the drawings: Figure 1 is a broken side elevation of my improved machine; Fig. 2 is a plan view of the same with a portion thereof broken away; Fig. 3, is a plan sectional view taken at the line 3, Fig. -1, and showing, more especially, the mechanism employed for feeding the cake of parafiin; Fig. 4 is an end or rear elevation, as viewed from the right hand of Fig. 1; Fig. 5 is a broken transverse sectional elevation, taken at the line 5, Fig. 1; Fig. 6 is an enlargeddetail section, taken at the line 6, Fig. 5; Fig. 7 is also an enlarged broken sectional elevation taken at the line 7, Fig. 2; Fig. 8 is a broken sectional elevation of a portion of the frame, and taken at the line 8, Fig. 9; and Fig. 9 is a broken sectional elevation taken at the line 9, Figs. 7 and 8.

Two similar side-frames 10 are provided and between them are secured cross-members 11 and 12, to extend flush with the upper surface thereof, (Figs. 2 and 7-). The member 11 is equipped with a series of pins 13, uniformly spaced apart, while the member 12, which is preferably of channel-shape in cross-section, has fastened to it between its flanges, a wooden block 14: carrying a series of screw-pins 15 like the tuning pegs of a piano. I provide guiding means for guiding the sheet past the brush that applies the coating, and give this means a form which in no way interferes with the operation of the brush. This guiding means is preferably of filamentary or wire form. These wires being of small gage, do not cover the face of the sheet in such a way as to interfere with the uniform application of the coating though they are on the side of the sheet toward the brush and brushed by the bristles of the brush.

The pins 13 and 15 are in longitudinal alinement and a series of wires 16 are looped about the former, at one of their ,equipped, respectively, with brushes 21 and 22 intermediate the frame 10, and each carries a pulley 23 at one of it ends, the pulleys being belted together as shqwn in Fig. 1, and as represented by dotted lines in Fig. 2. The shaft 17 carries at its opp site end pulleys 24 and 25, and a belt 26, l .ading from any suitable source of power, passes about the pulley 24 to revolve the brushes at a comparatively high velocity beneath the wires 16 and preferably in the direction of the arrows ig. 7.

Bars or angle- irons 28 and 29 are adjust ably secured to the frames 10, as at 27, and are arranged to extend transversely across the machine, the vertex of the angle of each bar being directly above a brush and in contact therewith. The bar 29 is equipped with two rearwardly-extending spring-arms 30,

' so curved as to normally rest (near their free ends), tangentially to the horizontal plane of the wires 16. The bar 29 also carries a forwardly extending spring-arm 31 which rests at its free end upon the cross member 11 of the frame. Each of the arms 30 and 31 is positioned upon the bar between on the frame, and are provided, respectively,

with feeding- rolls 38 and 39. The lowermost a pair of the wires 16.

A shaft 32 is journaled in bearings 33 in the frame, keyed thereto is a pulley 34 which answers the purpose of a fly-wheel, and a belt 35 passes about the pulleys 25 and 34 to impart rotation to, the shaft. Two pairs of feed- shafts 36 and 37 are suitably journaled shaft of each pair is provided at one of its ends with a sprocket-wheel 40, and about both the latter passes a sprocket-chain 41, as represented by dotted lines in Figs. 1 and 2. The lowermost shaft 36 also carries (at its opposite end), a pulley 42 which is shown to be belted to the hub or sleeve extension 43 of the pulley 34.

From the foregoing description it will be seen that both the brushes, and the two pairs of feeding-rolls are driven by the belt 26, but that while the former are driven at a high velocity the latter are caused to revolve comparatively slow.

Directly beneath the brush 21 is a cake of paraffin 43, which is carried by a vertically movable support 44. The support is provided with two downwardly a extending position by a cross-piece 48 (Fig. 5),. which in turn is' adjustably fastened at its ends to short angle-bars 49 (Figs. 3 and 5), projecting inwardly from the side-frames.

For feeding the wax or paraffin cake 43, to the brushes, the following described mechanism is employed: At the rear of the machine is a shaft 50 journaled in bearings 51 which rise from a cross-piece 52 secured to the frames 10. A hand-wheel 53 is mounted upon one end of the shaft, in convenient reach of the operator, and a worm 54 pinned to the shaft, meshes with a worm-wheel 55 (Figs. 3 and 4), on a shaft 56 disposed at right-angles to the shaft 50. The shaft 56 likewise carries a worm-57 in mesh with a worm wheel 58 on a shaft 59 mounted in bearings 60 rising from a cross-piece 61, similar to the cross-piece 52. Arms 62 are pinned to the ends of the shaft 59 and extend forward to bear against and embrace the bars 46, and at their free ends beneath the support 44. A rod 63 is bolted between the arms to afford rigidity thereto.

It will be apparent from the above description, that rotation of the shaft 50 through the medium of the hand-wheel 53 it becomes advantageous to use an automatic feed, the following described parts may be coupled up by throwing a pawl into engage.

ment with a ratchet-wheel.

, Adjacent to the pulley'42, the shaft 36' is equipped with an eccentric 64 adapted to revolve within an eccentric-strap 65 on one end of a connecting-rod 66, which may be adjustably connected at its opposite end with a rock-arm 6 7 loosely mounted upon the shaft 50. A pawl 68 is pivoted to the free end of the rock-arm .and is adapted to be thrown into or out of working engagement with the teeth of a ratchet-wheel 69, keyed to the shaft 50. Thus the revolution of the shaft 36 will impart a rocking movement to the arm to turn the shaft a fraction of a revolution upon each rotation of the shaft 36. A feeding-table 70 is suitably supported at the rear of the machine,'and is provided with guides 71, and a stack of tin or other material to be coated is positioned thereon as indicated at 72.

The operation is as follows: A sheet of the material to be coated is taken from the stack bv the operator and passed along the table 70, with its edge resting against the- 60 i sides of the bars act as-guides to assist in 1 fiai'igenide 71, until it is gripped by the with the brushes 21 and 22.

course through the machine.

feeding-rolls 38. These rolls thereafter iminsure its entrance between the feed-rolls 39 which act upon it after it has passed from the rolls 38. A pair of curved fingers 73 project from the member 11 into the path of movement of the sheet, so that if by any chance the corners of a sheet should be curled downward they will be guided by these fingers over the member 11. The brush 21 as it revolves in contact with the paraffin transfers the same to the sheet in the form of a. coating which is thereafter smoothed and polished by the brush 22.

In the operation of the machine it is understood that the bars 28 and 29 afford means for backing up the sheets rigidly in a narrow zone extending longitudinally of the brushes, that is parallel with the axis of iotation of each brush. This zone is substantially the line of tangency of a tangent plane touching the bristles of the brush.

' For the reason that the guide wires employed respect to the bars is nicely adjusted so that the tips of the bristles carrying the coating from the cake of coating material, wipe themselves on the sheet in the narrow zone. In other words the brushes are constantly wiping the coating onto a narrow line which passes relatively along the sheet as the sheet is fed through the machine. The operation of the brush 18 is similar to that of the .brush 17, but has the effect of rubbing the coating in and removing the surplus substance. Ihe bars 28 and 29 are preferably in the form of angular bars as shown, that is each bar presents a dihedral angle on the line of tangency of the brush. In this way the zone of application of the coating comes at the vertex of the angle, and the forward guiding the sheet.

As these brushes are both revolved at high velocity particles of the paraffin in the form of dust will be thrown therefrom by the centrifugal action and in order to gather and confine these, shields 74 and 75 are supported adjacent to the brushes (see Fig. 7). Obviously as the paraffin is worn away by the action of the brush 21, the cake must be raised, and this may be accomplished intermittently by the operator or continuously by coupling up the automatic feed, as before explained.

Successive sheets of tin or other material may be ,fed as described, and in much the same manner as in a printing press, but it is possible to pass material in web form through the machine, by initially entering the end of the web between the rollers 38.

In this event the web is preferably supported in a roll, not shown, upon the frame or otherwise disposed. Although the sheets are fed along above the wires 16, the latter do not prevent the free and uniform distribution of the paraffin over the entire surface thereof, as the brushes are so adjusted relative to the sheet as to insure the spreading of a uniform coating over the entire surface.

What I claim is 1. In a coating machine, in combination, a rotary brush, means for advancing a sheet past said. brush in a tangential direction, backing means'presenting a line of support for backing up said sheet on the side thereof opposite said brush extending along the line of tangency with said brush, and means for feeding the coating material to the brush.

2. In a coating machine in combination, a rotary brush, means for advancing a sheet past said brush in a tangential direction, backing means presenting an edge toward the sheet for backing up said sheet on the side thereof opposite to said brush extending along the line of tangency, and means for yieldingly backing up the sheet imme diately adjacent to said backing means and the brush.

3. In a coating machine in combination, a rotary brush, means for advancing a sheet past said brush in a tangential direction,

backing means presenting an edge toward the sheet for backingup said sheet on the side thereof opposite to said brush in a narrow zone extending along the line of tangency, and means for yieldingly backing up the sheet on each side of the brush.

4. In a coating machine in combination, a rotary brush, means for feeding a coating material thereto, means for advancing a sheet past said brush in a tangential direction, a bar substantially parallel with the axis of said brush and having a dihedral angle presented toward the brush for back ing up said sheet on the side thereof opposite to said brush in a. narrow zone extending along the line of tangency.

5. In a coating machine in combination, a rotary brush having bristles, means for advancing a sheet past said brush in a tan- 'ing means extending past the brush in the direction of advance of the sheet.

6. In a coating machine in combination, a rotary brush having bristles, means for advancing a sheet past said brush in a tangential direction, backing means having an edge for backing up said sheets on the side thereofv opposite said brush in a narrow zone extending along the line of tangency withsaid brush, means for feeding the coating material to the brush, and filamentary guiding means extending past the brush in the direction of advance of the sheet for supporting and guiding the sheet on the face thereof which is disposed toward vthe brush. I

7. In a coating machine in combination, a rotary brush, means for feeding a coating material thereto, means for advancing a sheet past said brush in a tangential direction, a bar substantially parallel with the axis of saidbrush havingan edge to en- I a pair of substantially parallel rotary brushes, a plurality of taut guide Wires extending in a plane substantially tangential to said brushes, means for feeding the sheet of material along said wires on the side thereof opposite said brushes, a bar disposed over each brush having an edge engaging the sheet and disposed transversely to and adjacent said wires, and forming a backing for holding the passing sheet in contact with the brushes, and means for feeding a cake of thecoating substance to one of said brushes.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN M. DE VOE. Witnesses ELwoon M. SKINNER, FRANCIS G. JAMIsoN.

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