US1469128A - Combined coating and winding machine - Google Patents

Description

Sept. 25,1923. 1,469,128

' J. J. WELDON COMBINED COATING AND WINDING MACHINE Filed May 11. 1921 3 Sheets-Sheet 1 Irwye'ntor: John J. Weldon,

His ALLorne q Sept. 25 1923., 11,469,128

J. J. WELDON COMBINED COATING AND WINDING MACHINE Filed May 11. 1921 3 Sheets-Sheet 2 Inventov: \John \lWeld'on His Attorney.

Sept. 25, 1923.

J. J. WELDON COMBINED COATING AND WINDING MACHINE Filed May 11, 1921 3 Sheets-Sheet 5 Ifiventof: John dM/eldon,

His Attorneg.

JOEN J. WELDON, OF PITTSIE TIELD, MASSACHUSETTS, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

COMBINED COATING AND WINDING MAOHINE.

Application filed may 11, 1921. Serial No. 468,663.

To all whom it may concern.

Be it known that I, JoHN J. WELDON, a citizen of the United States, residing at Pittsfield, county of Berkshire, State of Massachusetts, have invented certain new and useful Improvements in Combined Coating and Winding Machines, of which the following is a specification.

My invention relates to machines for both coating sheet material with an organic binder and winding it into desired forms.

More particularly my invention relates -to machines for coating fibrous sheet material, such as paper, with shellac and the like, and which simultaneously wind the same into cylinders, cores, etc.

In the prior art it has been generally customary, when applying the binder, shellac for instance, to any surface, first to get the binder into solution with the aid of a suitable solvent and then to apply the solution. For. shellac, alcohol is the solvent generall employed; its use, however, is objectiona le. in manufacturing vcylinders,

cores, etc., for electrical apparatussince it reduces the dielectric-strength of the prod not unless it is very thoroughly dried out of the product. The use of any solvent though is an item of considerable expense, since substantially none of the solvent is ever recovered having once been evaporated. In order to avoid this practice, it has been proposed to coat the fabric with binder applied in a solid state, the binder being made to flow and spread itselfevenly over the surface of the fabric solely by the application of heat and pressure without the aid of a solvent.- By reason, however, of the attention demanded during this operation, the coating of the fabric or sheet material was substantially all that one operator could reasonably attend to at one time.

My invention, however, provides an improved arrangement of parts by which one operator can easily attend to both the operations of coating and winding. In accomplishingthis end, I' combine the coating and winding rolls to perform their respective operations simultaneously and arrange the controlling devices for the coating, winding 7 v and feeding mechanism in such proximity that the whole may be attended 'by the one operator in his normal operating position.

For a more complete understanding of the nature and objects of my invention,ref-

erence should had to the following detailed description when taken in con unction with the accompanying drawings in which:

. Fig. 1 shows in side elevation a combined coating and winding machine for sheet material constructed to embody my invention, Fig. 2 shows anend elevation of the same machine, and Fig. 3 shows a machine embodying a modified arrangement for pro 'pelling the winding mandrel.

as it passes over the hot plate. The chute supplies a substantially uniform amount of shellac over the whole surface of the paper 'as it passes onto the hot plate H whereby there results an approximately even coating of shell-ac on the surface of the paper.

From the hot' plate, with fused shellac on its surface, the paper passes over a heated roll L; and thence it passes to the winding roll or mandrel Mon which it is wound into il irsired forms, as cylinders, cores, and the The frame F is constructed to support the rolls L and M in operative relation together with all the accessory -parts operating to produce the wound forms. Brackets 10 support the stock roll G on one "end of the frame in such relation that the sheet of paper P passes readily over roll 11 to the tensioning bars 12 secured symmetrically at equal distances from the center of wheel 13. The wheel shown is of the gear type and meshes with a pinion at 14 rotated by crank 15 for changing the tension on the'paper as desired. This tensioning device is mount ed on frame F and is partly shown in dotted lines to indicate that it is inside the vertical upright supporting members 20, at each 23 substantially as shown in the Reissued Patent to Briggs, No. 14,833, for metering rotates a preferably grooved feed cylinder mandrel M the shellac fed onto the chute K. The feedcylinder 23 is shown as driven by a pulley and belt 24 and 25, though any convenient form of drive may be used. From the feed cylinder, the shellac falls on to the chute K which is shown in full lines in its operative position, 'but it may be moved to the position indicated in dotted lines when out of use. l

In its operative position, the'chute K depositsthe shellac on the Ipaper ust as it passes onto the hot plate such hot plate being vdesigned with sufficient length that the shellac on the surface of the paper has ample time to be fused to the desired consistency as the paper moves over 1ts surface. This hot plate is heated, as here indicated, by a plurality of heating u n1ts 27 which are preferably of the electric type, though gas, steam and the like may be employed as theheating agent, the rolls and when desired being similarly heated.

As the paper. passes from the, hot plate 4 ing 38 and pulley 39 which is driven by the motor 40. The motor 40 is mounted at some convenient point on the frame F, here shown inside underneath, the motor providing thedriving power for the whole machine. The

belt 25 for driving the feedipg mechanism is also driven from the gearing 38 by belt and pulley '41 and 42 which are mechan-' ically connected and disconnected from the belt 25 by the clutch mechanism 43.

The mandrel. M is mounted in the journal bearings which are shown as provided with thumb nuts 51 so as to be readily-opened to remove themandrel at will. From'these bearings extend downwardly the plunger rods 52 which are pivotally secured to levers 53 disposed interiorly near the .base at each side. of the frame F (only one lever is shown I on the drawing in the interests of clearness).

The lever appearing in the drawing is pivoted at 54 and has a slidable weight 55 thereonfor adjusting the pressure -which the lever is designed to apply to the surface of the form being wound on the mandrel. To .render the adjustment of weight 55 easy, it

is shown as provided with a rack andpinion device at 56. Theshort arm of the lever 53 extends from the fulcrum 54 to thejright,

v as indicated at 57 in broken lines. The arm 57 secured to a link in the endless sprocket enemas 60 and 61. are idler's, but the wheel 62 is secured on a shaft rigidly with the worm wheel 63 which meshes with the worm 64 whose shaft projects to the exterior of frame F and has a squared end 65 adapted to receive a suitable wrench for applying power manual] to move the lever 53. The shaft 66 (see Fig. 2), on which wheels 62 and 63 are secured, extends across the end of-the machine to a similar set of sprocket wheels 60', 62', etc., for supporting the sprocket chain actuating the mandrel raising and lowering the lever (not shown) which is on the other side of themachine.

In the form of my invention illustrated in Figs. 1 and 2, the rolls L are driven while the mandrel M driven thereby; it may, however, in some instances be preferable to drive the mandrel positively and have the rolls L frictionally driven. An arangement for accomplishing this is shown in Fig.3.

In this figure, like reference characters refer tov parts similar to those in Figs. 1 and 2. Here the mandrel shaft has rigidly. secured thereon a gear 70 adapted to mesh with the pinion 71 carried by pivoted frame 72 which swings about the axis of gear 73 at its center. The gear 73 turns loosely on an end of the shaft from a roll L, and is driven by worm 35 (similar to worm 35) on shaft 36. extends a lever arm- 74 actuated by the pigton or. plunger of a power cylinde 75; such d cylinder beingjsuppliedby a suitable fluid under pressure, such as compressed air, in the well known manner whenever it is desired tomove the frame 72. The movement of the frame 72 causes pinion 71 to engage and disengage with gear 70,

positively is frictionally From the pivoted frame 72 the pinion being disengaged when it is desired to remove the mandrel but being normally in driving engagement with the gear 70 when the winding machine is in progress. It will be perceived that this is a flexible arrangement and permits any readjustment of the mandrel with respect to the rolls which may be desired during the winding operation as the cylinder on the mandrel builds up.

' The combined coating and winding chine of as follows:

The paper is first drawn from roll G, then r me.-

my invention operates substantially passed over the tension device, and subof the mandrel M which has been' previcontinuous winding commenced. A pool of fused shellac is maintained at the juncture of the two converging surfaces between the mandrel and the roll L so that they are simultaneously coated as the paper is wound into its desired form. It is seen from the arrangement of parts disclosed that both the operations of w nding and coatin aresimultaneously controllable by a sing e operatin attendant. 1

'aving now described an embodiment of my invention, which is at present the best means known to me for carrying the same into effect, I would have it understood that this is merely illustrative and that I do not mean to be limited thereby to the precise details shown, nor restricted in the choice of recognized equivalents except as defined I in m claims hereunto annexe g at I claim as new and desire to secure by Letters Patent of'the United States, is,-

1. A combined coating and winding machine for sheet material, comprising means for feedin an excess amount of organic binder in ry form onto a surface of said sheet material, means for heating and fusing said binder into an excess pool of fused binder .in contact with both surfaces of said material, whereby both surfaces are coated, and means for winding said material into desired forms.

2.'A combined coating and winding ma chine for sheet material, comprising means for windin sheet material into. a desired form, a rofiarranged to' press said sheet material against the form as it reaches the form, means for feeding an execess amount

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