US2340921A - Slasher brake - Google Patents

Description

Feb. 8, 1944. PM 5. BENOIf 2,340,921

SLASHER BRAKE Filed May 12, 1945 Patented Feb. 8, 1944 UNITED STATES PATENT OFFICE SLASHER BRAKE Philip S. Benoit, Methuen, Mass. Application May 12, 1943, Serial No.486f72i) 3 Claims.

This invention relates to brakes for what are known as slashers. A slasher is a machine in which two or more large sized thread rolls or spools, known as section beams each contain-- ing perhaps from five hundred to one thousand warp threads or ends are placed on "suitable supports, and their ends or threads are brought toether to form a number of warp beams each holding many times the number of ends on each section beam.

The warp so formed may then be passed through suitable baths for sizing and through or around heating and drying rolls or drum and may also have strings or rods introduced 'to keep the various threads from matting and sticking together and in some cases to form a lease or shed.

In such slashers as now operated, each section beam has a gudgeon at each end which rests in a bearing, usually open at the top, and formed on or attached to a bracket arm carried by an upright support.

To prevent slack and to prevent the rollsfrom unwinding, too fast or too slow and also to provide a uniform tension on all the warp threads, the heads of these rolls or beams are generally grooved and on one side, or 'on both sides,a rope fastened to the floor extends up and over and then down in this groove and carries a "weight at I the end.

This serves as a brake but the weights are in the way and, if a rope breaks on account of being worn by rough places ona head, the weight often falls onto the sheet of warp threads and does serious -damage.

When it is necessary to remove the old beams and to replace them with new ones, these ropes and weights must be thrown off out of the way to permit the old beams to be lifted out and removed and new beams to be put in'pla'ce. These beams may weigh from two hundred'tofive'hundred pounds and it is desirable that there should be nothing in the way of the operators who handle them or with the mechanical devices for lifting them in andout of position.

This device 'is an adjustable brake, to engage one or both heads of a section beam, so made that it can take the place of a rope, such as mentioned above, and so made that it can be adjus'ted in pressure and in position and can be taken out of the way when the beams are to be changed.

Itis so made that it can be attached either to a post extending from the floor to the ceiling or to a hanger extending down from the ceiling or to a post extending up from the floor and either round, as of metal, or rectangular, as of wood.

As shown in Fig. 7 it can also be attached to the flange of an upright part of a frame such as used to support the section beams of some slashers.

While itis usually more convenient to so locate my brake that its padded shoe bears down on the top of the head of a section beam, it can be so located that it bears against any other part of a head. Usually a brake for one head of each beam is sufii'cie'nt.

In the drawing,

Fig. 1 is a side elevation, partly diagrammatic showing certainparts of a slasher.

Fig. 2 is an elevational front view of my brake assembly attached to a post.

Fig. 2A is a "detail "in section showing the preferred construction of brake .pad.

Fig. 3 is a view as from the left of Fig. 2.

Fig, 4 is an elevational View as from the right of Fig. 2.

Fig. 5 is a cross sectional view looking down on the line '55 of Fig. 2.

Fig. 6 is a horizontal sectional view through a wooden post and through an attaching "plate.

Fig. 7 is -a vie'vv partly in section of an attachin'g plate attached to a T-sha'ped flange on a support.

In the drawing, S indicates a slasher of a well known'typ'e including in this case the usual sizing bath 90, rolls 9|, 92, and drying roll 93 although these rolls may and do vary on slashers for different fibres.

In this case also the slasher includes .posts P which, as "shown, are attached to the frame 9 1 of the slasher and to the .Ifioor F. As shown, these posts preferably extend up to the ceiling C Where they are attached at thus being made steady.

'B, B, B, B, B, .B, B, 3, represent section beams each of which includes a barrel lion which warp threads such as F8 are woundbetween the two heads l l,, H, around the edge of each of which there may be "the usual groove 13 for the old type "of rope brake. ll), IE, represent the gudgeo'ns which support each roll in bearings such as D which include a split collar E4 which fits a post P being held together by bolts l5, l5, and having an arm [6 at the top of which is an open bearing H. Y

Adjoining-each bearing D on eachpost such as P, 'nceate one of 'mybrakes A. "Each'brake consists of an attaching plate I through which are two attaching holes 2, 2, and from which projects a carrier 3 for a vertical adjusting screw 4. There are also screw holes 20 and 2| for a pivot screw 5 and a slot screw 6 by which a brake arm holder 1 is pivoted to plate I. There is also a brake arm hole 22 through holder 1 for a brake arm 8 which is slidable therethrough and can be held in position by a set screw 9.

60 is a stop slot to limit movement of holder 1 and 6 is a stop slot screw.

30 represents a brake shoe with a padded face 3i, adapted to rest on a head I l of a section beam B, the shoe 30 being attached to the other end of the brake arm 8 by two brake shoe guides 32 and 32, each having a head and each engaging a threaded hole 34 in the shoe 3D and each being surrounded by a brake spring 35. these brake shoe spring guides 32, 32, the pressure of the springs 35, 35, can be equalized and regulated as desired.

In Fig. 5, I show a U-shaped clamp U having arms 40, 40, each of which extends through a hole such as 2 and carries a nut such as 4| whereby the attaching plate I and the entire brake can be fastened in any position on a round post such as P. These are shown in the first and second posts from the left in Fig. 1.

The third post from the left in Fig. 1 is a post of wood having a flat vertical face and instead of the U-clamp, wood screws 42, 42, can be used as shown in Fig. 6.

Instead of posts extending from the floor to the ceiling a shorter post such as shown at the right of Fig. 1 can be used.

As shown in Fig. 7, an attaching plate I of a brake can be attached to the T-shaped flange 5| of one of the well known supporting frames, used with many slashers for supporting the section beams, indicated by 50, by the use of bent hooks such as 53 which engage the flange 5i and extend through the attaching holes 2, 2, and are tightened on the flanges by nuts 55.

As shown in Fig. 2A, the padded face 38 of a brake shoe 30 can have a rib 31 to fit an annular groove i3 in the head ll of a section beam and one spring 39 and one guide 29 can be used for each brake shoe.

The rib 31 in groove l3 provides more brake surface and also prevents each section beam from moving axially on its gudgeons. It thus keeps all of the beams in correct alinement.

It will be seen that my brake can be adjusted vertically and fastened on a round metal post P, as shown in Figs. 2, 3, 4 and 5, on a wooden post as shown in Fig. 6, or on the T flange of another kind of support or post, as in Fig. 7., by means of a yoke U, screws entering the wood, or hooks 53.

Its horizontal position over a section beam head can be adjusted and it can be held in place by the set screw 9 and it can be pressed down on the beam head by the set screw l, while the pressure of the springs 35, 35, can be regulated separately by the shoe guides 32. If the brake has a tendency to tip or if the outer rim of a head is not exactly even, these springs and guides take up the difference and also compensate for wear.

When the old section beams are to be removed, the simplest way is to loosen the set screw 9 and remove the arm with its brake shoe so as to give plenty of room to remove the old section beam and to replace it with a new one, whereupon the brake arm and the brake are replaced.

The resiliency of the springs 35, 35, usually allows the'brake shoe to be removed without touching the set screw 4.

By turning I claim:

1. The combination with a slasher having a plurality of section beams each formed with supporting gudgeons, two heads, one having an annular groove in its rim, a winding barrel between the heads, and supporting posts on each side, each post having a bearing for a section beam gudgeon; of a brake including an attaching plate having two fastening holes together with a carrier for a brake arm holder adjusting screw; means passing through the fastening holes by which it is attached to a post; a brake arm holder pivoted to the attaching plate, and having an arm hole, a stop slot, and a stop slot screw which passes through it; and a brake arm holder adjusting screw passing through the carrier to ad just such brake arm holder; a brake arm slidable through the arm hole in the brake arm holder; a set screw in the brake arm holder for holding the brake arm in position; a brake shoe carried by the brake arm and including a padded face with a rib to fit the annular groove in and adapted to be in contact with one head of a section beam; adjustable brake shoe guides connecting the brake shoe with the end of the brake arm; and a brake spring surrounding each brake spring guide and positioned between the brake shoe and the end of the brake arm.

2. The combination with a slasher having a plurality of sections beams each formed with supporting gudgeons, two heads, a winding barrel between them, and supporting posts on each side, each post having a bearing for a section beam gudgeon; of a brake including an attaching plate having two fastening holes together with acarrier for a brake arm holder adjusting screw; means passing through the fastening holes by which it is attached to a post; a brake arm holder pivoted to the attaching plate, and having an arm hole, a stop slot and a stop slot screw which passes through it; a brake arm holder adjusting screw passing through the carrier to adjust such brake arm holder; a brake arm slidable through the arm hole in the brake arm holder; a set screw in the brake arm holder for holding the brake arm in position; a brake shoe carried by the brake arm and including a padded face adapted to be in contact with one head of a section beam; adjustable brake shoe guides connecting the brake shoe with the end of the brake arm; and a brake spring surrounding each brake spring guide and positioned between the brake shoe and the end of the brake arm.

3. For use with a slasher, including a section beam supported by gudgeons on hearings in supporting posts and having two heads; a brake including an attaching plate with a carrier for a brake arm holder adjusting screw; means for fastening the attaching plate to a post; a brake arm holder pivoted to the attaching plate and having an arm hole; a brake arm holder adjusting screw passing through the carrier to adjust such .brake arm holder; a brake arm slidable through the arm hole in the brake arm holder; a set screw in the brake arm holder for holding the brake arm in position; a brake shoe carried by the -brake arm and including a padded face adapted to be in contact with one head of the section beam; an adjustable brake shoe guide connecting the shoe with the end of the brake arm; and a brake spring positioned between the brake shoe and the end of the brake arm,

PHILIP S. BEN OIT.

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