US2339266A - Guider for traveling stock - Google Patents

Description

'Jan. 18, 1944. R HETHER|NGT6N 2,339,266

GUIDER FOR TRAVELING STOCK Filed July 28, 1941 2 Sheets-Shet' 1 1944- R. HETHERINGVTON 1 2,339,266

GUIDER FOR TRAVELING STOCK Filed July 28,.1941 2 Sheets-Sheet 2 Patented Jan. 18, 1944 UNITED STATS ram" OFFICE assazss GUIDER FOR TRAVELING STOCK Robert Hetherington, Sharon Hill, Pa.

Application July 28, 1941, Serial No. 404,297

Claims.

My invention relates to guiders for traveling stock of a type which are located in pairs one each at opposite sides of a moving sheet of stock and which respond to bodily movement of the stock toward either side by releasing the pressure of the rolls upon the stock at the side toward which movement takes place and/or tightening the grip of rolls upon the stock at the opposite side.

My invention is directed particularly to automatic adjustment of the surface of the movable roll of the roll pair to the adjacent surface of the fixed roll of the pair, notwithstanding wear upon the rolls.

A further purpose is to provide direct motor shaft cam and lever pressure application to a cradle which carries a movable roll.

Further purposes will appear in the specification and in the claims.

I have preferred to show a single form only, selecting a form which is simple, practical, reliable, eifective and inexpensive and which at the same time well illustrates the principles of the invention.

Figure 1 is a perspective view of a guider embodying my invention.

Figure 2 is a section of Figure 1 taken in a plane perpendicular to the axis of the rolls in Figure 1'.

Figure 3 is a fragmentary longitudinal sectio through the rear of the motor shaft.

In the drawings similar numerals indicate like parts. I

In the continued operation of guiders including each a bodily fixed and a bodily movable roll called throughout fixed and movable rolls respectively, the rolls are subjected to hard wear and the movable roll progressively is reduced in diameter, especially at the end nearer the center line of the stock. Soon the effective grip is impaired except at the immediate edges of the cloth.

It has been customary at intervals first to warp the shaft support from the cradle and to increase the pressure in an air guider, for example, and later to turn down the surface of the movable roll to take care of the wear. This is objectionable because of the excessive reduction in size of the roll, but particularly because it is not put into effect until the wear upon the r011 becomes noticeably objectionable.

I have discovered that the movable roll can be swiveled With respect to its cradleso that the movable roll surface as it wears will align with the surface of the fixed roll and will maintain nearly parallel gripping surfaces durin the time in which wear is taking place. In this way the effect of the wear may be minimized during use without forfeiting the privilege of truing the roll surfaces if the wear is irregular. Even in this event the amount of truing required will'be reduced since the roll can be tapered to make its surface a straight line along the surface elements. This tapering is not available with the roll axes in maintained parallelism. The conditions of wear are improved and the amount of correction required,if ultimately the surface be trued, are both improved by placing the swivel nearer to the roll end which is farther from the cloth center line than to the opposite end of the roll.

I have found further that movement of the movable roll in response to electrical contacts merit of a roll-carrying cradle.

The bracket 5 is supported from any suitable base 6 and carries a spindle l and bolt 8 by which the fixed and movable rotatable rolls 9 and iii are supported.

The roll 9 is held in place by a nut H. The spindle, and the bearingsnot shownsupported by it are of conventional type and are in general use in the art.

-.The bolt 8 by which the cradle is held in position passes through conventional sleeve 12 and the ears i 3 and M of a cradle l5. The cradle differs from a normal cradle because it is made of two parts swiveled, one with respect to the other. In the illustration the ears are connected to opposite ends of a swivel plate I6 which bears against and is swiveled to a cooperating swivel plate ll by a bolt l8 and nut [9. The adjacent surfaces of the two swivel plates bear, one upon the other, giving play about the bolt at l3 and approximately within planes parallel to a plane through the axes of the two rolls.

The swivel plate I! is connected by arms 28 to yoke 2| as is usual with the side arms of existing cradles, and the yoke carries any desired form. of anvil 22 against which the pressure-applying mechanism is directed in bringing successive pressures to bear upon the cradle and in thus tightening the movable roll against the fixed roll. The anvil is of course a part .of the yoke, merely a wear part or a facing specially suited to receive the pressure to be applied through the movable roll.

The edges of the stock which is guided engage the feeler finger 23 which is supported upon a table 24 connected with the bracket at 25.

The feeler finger 23 operates a rocker arm 26 swinging about a bolt 21 as a pivot and rocking the terminal 28 of a threaded (adjustment) bolt 29 against or releasing it from a contact held by switch 30. l The bolt is locked in adjusted position at 3|. The use-of feeler fingers to rock an arm and thus to make and break switch contact is well known in the art and no claim of novelty is made for it here.

The feeler finger mechanism causes closing and opening of the circuit in supply cable 32 for a capacitor or high initial torque motor 33 which may be a capacitor motor such as has been described in my Patent No. 2,178,231, with the result that the capacitor or other motor shaft 34 is oscillated and then is allowed to turn back, all as described by me in connection with the said capacitor motor.

The condenser 35 may be the normal condenser of a capactor motor or may be thrown across the terminals of the switch.

Whatever the type of motor its shaft carries a cam 36 which engages one end 31 of a lever 38 which is pivoted at an intermediate point in its length to any convenient fixedpart as by bolt 39. The opposite end 40 of the lever is used to bring pressure to bear upon the anvil 22. The connection is shown in the figures as an adjusting screw 4| threading through the end of the lever and locked in its adjustment by nut 42. V

The engagement between the lever and the cam is through a roller 43 carried by the lever.

Because in operation the rear end of the motor slopes downwardly in order to provide for the diagonal downward and inward direction in which the axes of the rolls are directed in use, it is necessary to provide a thrust bearing.

In Figure 3 the rear of the motor shaft 34 is shown as passing through a disc 44 carried by rear plate 45, as is common practice. At the rear of the shaft 34 the center of the shaft is concaved at 46 to receive a ball 41 which presses against the walls of a concavity 48 in the adjacent face of the strap 49. The ball bearing is lubricated through an opening 58. The cylindrical surfaces of the shaft 34 are lubricated in a way common in these motors and for this reason not illustrated. The strap is attached by bolts which may pass through the length of the motor and hold both cover plates 3 and 52 in position.

It will be evident that the swivel plates joined together by the pivot and forming the bearings for the swivel may be of any suitable form and may be mounted from the cradle-supporting pivot in any way suitable, preferably nearer to the bracket end of the movable roll than to the other end of the roll. The ears and sleeve shown forming a convenient way selected for illustration be-' nection between the two members, a yoke carried by the lower cradle member, and a support for the movable roll journaled in said yoke, the swivel connection being nearer to the bracket end of the movable roll than to the other end of the movable roll.

2.. In a guider for traveling stock, a bodily fixed rotary roll and a bodily movable rotary roll engaging the fixed roll along its length, both smooth surfaced and having axial lengths in excess of their diameter, and adapted to grip travelin stock when it is fed between them, a two part cradl carrying the movable roll and swinging freely transversely of the axis of the movabl roll, bodily toward and bodily away from the fixed roll, means controlled by the traveling stock for pressing the movable roll toward the fixed roll and a support for the cradle, the cradle bein characterized by the fact that between its support and the movable roll it is swiveled, on part with respect to another, so that th movable roll is free to adjust angularly, one end of the roll relatively moving toward and the other end movalong its length, th two rolls being adapted to grip traveling stock passing between them, a support fOr the fixed roll, a bracket adjacent the edge of the stock, a support for the movable roll from the bracket, a cradle for the movable roll loosely mounted upon the support so that the cradle is free to swing freely, transversely of the axis of the movable roll, bodily toward and bodily away from the fixed roll, means controlled by the traveling stock for pressing the movable roll toward the fixed roll, and a swivel within the cradle, permitting movement of the axis of the movable roll angularlywith respect to th axis of the fixed roll where the rolls move toward and from each other, the angular movement causing one end of the movable roll relatively to move toward the fixed roll at the same time that the other end of the movable roll moves away from the fixed roll and permitting alinement of the movable roll surface when worn with the adjacentsurface of the fixed roll.

4. In a guider for traveling stock, a bodily fixed rotatable guider roll and a bodily movable rotatable guider roll engaging the fixed roll along its length'and adapted to grip traveling stock fed between them, the stock varying in position along the lengths of the rolls, a cradle carrying the movable roll, a bracket adjacent the edge of the stock, a support for the cradle carried by th bracket, upon which support the cradle swings freely transversely of the axis of the movable roll, and means controlled by the traveling stock for pressing the movable roll toward the fixed roll, a swivel joint in the cradle permitting relative angular movement between the axis of the movable roll and the axis of the fixed roll where the rolls move fixed rotatable smooth surfaced guider roll, a

support therefor, a bodily movable smooth sur-.

faced rotatable roll having an axis generally parallel to the axis of the fixed roll both rolls having greater length than diameter, the rolls being adapted to receive stock traveling between them, a bracket adjacent the edge of the stock, a bolt carried by the bracket, cradle members supported by the bolt and including an upper swivel member and a lower swivel member, providing for movement between the two members causing the roll axes no longer to be parallel, pivotal connection between the cradle members, a yoke carried by the lower cradl member, means controlled by the traveling stock for pressing the movable roll toward the fixed roll, and support for the movable r011 from the lower cradle member.

ROBERT HETHERINGTON.

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