US2128377A - Cloth finishing machine - Google Patents

Description

Aug. 30, 1938. `:.IG. RICHARDSON 2,128,377

CLOTH FINI SHING MACHINE Filed Aug. 22, 1954 willllIl1111llll/lll//l/l//l/l//l//ll//ll/"t f i Patented Aug. 30, 1938 UNITED STATES PATENT OFFICE" CLOTH FINISHING MACHINE Application August 22,

6 Claims.

This invention relates to cloth finishing machines of various types and is intended to provide such machines with means for eliminating the curling or rolling in of the longitudinal edge portions of the piece of fabric being finished.

It is well known that tubular knitted fabrics of all kinds of textile fibers, when split longitudinally for garment making, have a very marked tendency to curl in at the edges, thereby causing much trouble or damage when such pieces are passed through a finishing machine, either for face shearing, brushing, napping, pressing or other treatment. It is the object of the present invention to provide means applicable to various types of finishing machine which shall eliminate this curling of the edges and all-ow the full width of the fabric from edge to edge to be fed to the finishing elements in a flat condition which allows the finishing treatment to be applied to the marginal portions as well as to the interior parts of the fabric and thus avoids waste and damage.

The principle of this invention as disclosed herein is embodied in a preferred form of apparatus, the construction and operation of which will be described in the following specification and the novelty thereof defined in the claims hereto annexed.

In the accompanying drawing:

Fig. l illustrates an elevation of a cloth nishing machine taken from a plane immediately in front of the curl-eliminating attachment.

Fig. 2 is a side elevation, partly broken away, to expose otherwise concealed parts and illustrates the relation of the smoothing devices to the rear portion of a face shearing machine.

In the construction and arrangement embodying the invention according to the form illustrated in Fig. 1 and Fig. 2, the mechanism therein is applied to a well known type of cloth shearing machine provided with the usual pivotal ily blade head A, in which is mounted a rotary fly blade C and to which is secured the usual ledger blade B in a well known manner.

The cloth or fabric, whose path of travel is indicated at X, is subjected to the action of the usual rotary raising brush D before passing along a flat table or cloth support 3, in this case comprising a smooth sheet metal plate 3 covering the top of the transverse cloth rest beam 2, at whose rear edge the face of the fabric is presented to the action of the shearing couple. At the forward edge 4 of the cloth support or table 3 is located a revolving shaft or drum whose end portions are cut to form a helical ratchet having abrupt shoulders on the outer side and inclined faces on the inner side and arranged to rotate against the under face of the cloth just before it reaches the forward edge 4 of the cloth supporting table. This ratchet screw 5 extends across 1934, Serial No. 740,959

the Width of the finishing machine having its opposite end portion formed with a similar ratchet thread also inclined outwardly in the direction of its rotation to outwardly smooth the marginal portion of the fabric being treated immediately before it passes over the flat table 3.

Since the fabric, even when laid flat on the table, still retains its tendency to curl, provision is made for maintaining the marginal portions of the travelling cloth in a flat condition. In this case this result is obtained by means of travelling endless belts 3B and 3|, the former arranged close to the rear edge of the cloth rest where the cloth is presented to the finishing mechanism, while the latter is located near to the forward end of the table that receives the cloth after the curled edges have been straightened out by the rapidly revolving ratchet 5.

To properly support and actuate the brush belts 3D and 3i there is provided somewhat above the level of the upper stretches of these belts a supporting beam I 3, as shown, of T-shaped cross section, whose ends are supported by vertical slides I I mounted in suitable slideways formed in the frame of the machine, each slide having threaded engagement with an adjusting screw I'I to whose upper end is secured one of a pair of mitre gears I6, the other of which is secured to a transverse adjusting shaft I5 provided with a hand wheel Il?. so that, as the screws at the opposite side are rotated simultaneously in one direction or the other, the slides and the T beam secured thereto are raised or lowered. The brush belts 39, SI are carried by flanged sheaves III secured to approximately horizontal shafts 'I lying in parallelism with the plane of the cloth support 3. The shafts I are rotatably mounted in bearings 8 formed on slidably adjustable brackets I2 carried by the overhead transverse supporting beam I3 to which said brackets I2 are adjustably secured. The brackets I2 are slidable along their supporting beam I3, so that the brush belts may be set to properly overlap the edges of pieces of cloth of different width. Each bracket I2 can be accurately set as to vertical height by means of the vertical set screws I2c and are clamped in adjusted position by means of clamping screws I2a and I2b. The vertical adjustment is intended to provide means for establishing a proper paral- 20Lrl lelism between the line of travel of the lower is provided a suitable motor 2U connected by belt and sheaves with a transmission shaft 2|, which itself transmits rotation to the sheave 9 located on the inner shaft 'I that supports and drives the brush belt. The outer brush belt shaft 1 is driven from the inner shaft l? by means of a connecting belt Illa. The reversely threaded ratchet screwv is mounted in vertically adjustable bearing members a that are clamped at the proper level by means of clamping screws.

The action of the reversely threaded outward smoothing ratchet shaft 5 acts to straighten out or smooth in an outward direction the marginal or edge portions of the cloth just before it reaches the flat supporting plate or table 3. The two brush belts act to maintain the smoothed out margins of the cloth in their straightened or flattened position up to the point where the cloth is presented to the finishing mechanism, in this case the shearing elements. In consequence of this smoothing out the marginal edges of the cloth and maintaining them in flat position, the cloth finishing elements perform their finishing treatment upon the marginal edge portions as Well as upon the remainder of the surface of the fabric and it is found in practice that when the marginal portions have been subjected to the nishing treatment the tendency to curl is permanently eliminated and there" is no longer danger of damaging or cutting the curled up edge portions of the fabric and there is no necessity of cutting off the marginal edges either because they are no-t properly finished or because they are damaged. Consequently much trouble and iwaste is prevented.

To permit illustration on a sufnciently large and clear scale only one side of the anti-curling attachment is actually illustrated, it being undern stood that the opposite side of the cloth is provided with a duplicate construction, the two portio-ns being made as right and left members of the attachment.

It is important that the smoothed out margins of the fabric should be kept fiat until they arrive at the position for treatment by the finishing mechanism and the outward movement of the ratchet threads, acts to temporarily smooth outwardly and straighten the curled edges of the cloth, while the endless belt means is provided for further smoothing out and preventing the return of the curl until the finishing mechanism has functioned and has imparted a permanent set to the straightened edges of the fabric.

While I have shown and described a preferred form of my invention, it is to be understood that the same is not limited to the details shown and described but is capable of modification and variation Within the spirit of the invention and the scope of the appended claims.

What I claim is:

1. In a cloth finishing machine having cloth finishing mechanism the combination of a cloth supporting element having a smooth flat cloth sup-porting surface extending forwardly from close proximity to the cloth nishing mechanism, a rotary curl eliminator arranged transversely of the cloth in close proximity tothe front of said support in position to direct the cloth with its uncurled edge portions in fiat condition upon said support,means for yieldingly maintaining the flattened marginal portions of the cloth against said support comprising an outwardly travelling transversely arranged belt engaging the marginal portion to keep the cloth lying flat against-the support until it is delivered to the finishing mechanism.

2. In a cloth finishing machine provided with cloth finishing mechanisma curl-removing element comprising a cloth supporting member for supporting the cloth as it travels to the finishing mechanism, a rotary helical ratchet member arranged in close proximity to the front of said support and rotated at higher surface speed than the travel of the cloth, whereby marginal portions of the cloth are uncurled and delivered to said support in a fiattened condition, means for maintaining said attened cloth in fiat contact with said support While it travels to the cloth finishing mechanism, said means comprising a plurality of transversely arranged belts moving outwardly upon the surface of the cloth and thus preventing the recurling of the marginal portions of the cloth.

3. A curl eliminating device for presenting a travelling web of cloth to cloth finishing mechanism comprising a smooth flat surfaced cloth supporting member for supporting the cloth as it travels to the nishing mechanism, a rotary helically threaded spreader roll extending transversely of the cloth and in close proximity to the front of said cloth support, means for maintaining the uncurled marginal portions of the cloth in flat contact with said suppo-rt while it is travelling to the cloth finishing mechanism, said means comprising belts provided with' yielding bristles and travelling outward on the face of the cloth to prevent the marginal portions of the cloth from re-curling before they reach the cloth finishing mechanism.

4. A curl eliminating device for presenting the entire width of a traveling web of cloth to cloth finishing mechanism comprising, a belt arranged transversely with respect to the direction of travel of the cloth and overlapping one of the marginal edges thereof, means for supporting the cloth with its surface in` contact with the belt, means for effecting continuous motion of the belt outwardly on the cloth surface, and means carried on the cloth contacting surface of the belt for maintaining a continuous frictional contact with the surface of the cloth outwardly to the cloth edge.

5. A device for eliminating curl from the edge of a traveling piece of cloth, embracing means for supporting one face of the cloth, a curl-eliminating endless belt element provided with projecting bristles and having a rectilinear portion thereof in contact with the other face of the cloth traveling by, said rectilinear portion of the belt extending transversely across the marginal edge portions of the cloth in overlapping relation thereto and means for effecting continuous motion of said bristle-carrying belt transversely outwardly across the marginal portion of the cloth.

6. A curl eliminating device for presenting a traveling web of cloth to cloth finishing mechanism comprising, a cloth supporting member for supporting the cloth as it travels to the finishing mechanism, cloth spreading means extending transversely of the cloth at the front of said cloth support, and means for maintaining the uncurled marginal portions of the cloth in contact with said support while it is traveling to the cloth nishing mechanism, said means comprising belts provided with bristles and traveling outwardly o-n the face of the cloth to prevent the marginal portions of the cloth from recurling before they reach the cloth finishing mechanism.

CHARLES G. RICHARDSON.

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