US1179366A - Automatic guide for cloth winding and shearing machines. - Google Patents

Description

AUTOMATIC GUIDE FOR CLOTH WlNDlNG AND SHEARING MACHlNES.

- APPLICATION FILED 06128, 1911. 1,179,366.

Patented Apr. 11, 1916.

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THE COLUMBIA PLANOORAPH CO., WASHINGTON, D- C.

UNITED STATES PATENT ()FFIG,

FRED C. WOOD, OF SPRINGFIELD, VERMONT, ASSIGNOR T PARKS & WOOLSON MACHINE COMPANY, OF SPRINGFIELD, VERMONT, A CORPORATION OF VERMONT.

Specification of Letters Patent.

Patented Apr. 11, 1916.

Application filed October 28, 1.911. Serial No. 657,275.

zen of the United States, and resident of Springfield, Vermont, have invented certain new and useful Improvements in Automatic Guides for Cloth Winding and Shearing Machines, of which the following is a specification. V

This invention relates to machines for shearing cloth and is particularly intended to provide a simple and effective means fortakino up slack or fullness in the edge of the cloth before it passes to the cloth rest which forms a support for presenting the cloth to a shear.

As is well-known by those skilled in the art, the edge portions ofthe cloth passing through the shear often become cockly, that is, manifest a tendency to bunch or wrinkle, which is likely to result in cutting and damaging this part of the cloth. This fullness or wrinkling also tends to make the cloth miss its intended operative contact with the feeler catches which automatically control the extensible portions of the cloth rest. The present invention is intended to overcome these adverse conditions by providing automatic means for taking up the slack or fullness at the edge portion of the cloth before it passes over the feeler catch and the cloth rest, in order to insure its operative engagement with the feeler catch and prevent the cloth edge from wrinkling as it passes over the cloth rest.

The invention consists primarily in oppositely acting tension members or guides for engaging the opposite faces of the cloth at each side edge adjacent to the cloth rest. The take-up members or guides may also be constructed to perform the function of guiding the edge of the cloth outwardly as well as to remove wrinkles or fullness from the edge. They also assist in the case of an extensible cloth rest, of the proper engagement of the cloth with the feeler catches, by which the rest is shortened or lengthened.

In the accompanying drawings I have shown a preferred form of the invention applied to an extensible cloth rest of the general type shown in United States Letters Patent No. 630,969, in which Figure 1 is a plan view showing a portion of the cloth rest apparatus and the take-up guides adjacent thereto; Fig. 2 is an end elevation showing the relative arrangement ofthe guides to the cloth rest mechanism; Fig. 3 is a detail plan view showing the supportin bracket and the automatic guides, and Flg. 4 is a detail view in end elevation showing the supported bracket and the automatic guides or take-ups.

In the drawings illustrating this invention, I have shown only so much of the cloth rest as will be convenient for a complete understanding of the operation of my invention. According to common practice, the end of the cloth rest is made in sections comprising vertically movable blocks a which are raised into or lowered from operative position by means of the longitudinal movement of the slide bar I), which in turn is actuated by the reciprocating double tooth rack bar 0 which is engaged and moved in either direction by the pivoted latch 11, which latch engages either side of the rack bar 0, according to the position of the feeler catch cl, which is serrated or roughenedin order to engage the edge of the cloth and be moved thereby in a manner similar to that described in the patent above referred to.

The rotary shear e, the ledger blade 6 and the cloth rest a cooperate to perform the shearing operation 1n the usual manner. Often times, however, difficulty is encountered owing to the fact that the edges of the cloth approaching the cloth rest and shear are cockly or puckered, so that they present too much fullness in passing over the cloth rest and also sometimes fail to properly engage the feeler catches, through the agency of which the cloth rest is automatically shortened or lengthened. To overcome this difliculty, I have mounted in advance of the feeler catch, in position to engage the edge portion of the cloth on opposite sides, two take-up members or guides f and g, which may be of any suitable form or construction so long as they operate to remove the fullness by forcing the edge of the cloth in opposite directions as the cloth advances to the cloth rest. As actually shown in the drawings, these take-up devices comprise a pivoted movable finger g mounted beneath the edges of the cloth and provided with a tension spring 9 which tends to lift or move the forward member against the under side of the cloth, while the cooperating finger f is arranged somewhat nearer the cloth rest to depress the edge portion of the cloth by its engagement with the upper face of the cloth. It is immaterial whether the device is actuated by gravity or by springs. In the drawings I have shown the lower member actuated by a tension spring and the upper l member by its own gravity. Both members are mounted in a sustaining bracket h, which is secured to a convenient part of the ma.- chine in order to present them in operative relationship to the edge of the cloth. To further assist the operation, I have shown the cloth engaging faces of each member provided with diagonal corrugations 9 7, which are inclined so as to tend to guide or stretch the edge of the cloth outwardly.

In Fig. 2, I have illustrated the manner in which the loose or full portions of the edge of the cloth are taken up by these devices, the actual course of the cloth being indicated in the full line, while the straight course of the cloth is indicated in dotted lines. The invention is also applicable to the feeding of the cloth in other types of machines beside cloth shears.

What I claim is:

1. In a shearing machine, the combination of the shear, a cloth rest cooperating therewith, a pair ofoppositely acting yieldingly mounted take-up devices arranged to engage opposed faces of the edge portion of the cloth passing to the shear in order to keep the edge of the cloth taut when fullness or wrinkles are present, substantially as described.

2. In a shearing machine, the combinationof a shear, of a cloth rest cooperating therewith, a pair of oppositely acting movable fingers arranged one in advance of the other adapted to be actuated by means of the cloth and engaging respectively the upper and lower faces of the cloth adjacent to and in advance of the cloth rest, substantially as described.

3. In a shearing machine, the combination of an extensible cloth rest, the automatic feeler catch arranged to engage the edge portion of the cloth to vary the length of the cloth rest, oppositely'a'cting guides movable by the'pressure of the cloth arranged to engage the edge portion of the cloth in advance of the feeler catch to insure the tension of the cloth upon the, feeler catch, substantially as described.

4. In a shearing machine, the combination of an extensible cloth rest, the automatic feeler. catch arranged to engage the edge portion of the cloth to vary the length of the cloth rest, freely pivoted guide members arranged respectively to engage the opposed faces of the edge portion of the cloth in advance of the feeler catch and adjacent thereto, substantially as described.

5. The combination with an extensible cloth rest, a feeler catch by which the length of said cloth rest is varied, a pair of adjacent members movable transversely to the plane of the cloth one of which tends to engage the under side of the cloth to lift it from its normal position the other being arranged to engage the upper face of the cloth to depress it, substantially as described.

6. The combination with the extensible cloth rest and a feeler catch by which the length of said cloth rest is varied, a pair of oppositely acting adjacent members arranged torespectively press against the under and the upper races of the cloth with ayielding pressure, said members being provided with inclined corrugations for guiding the edge of the cloth outwardly, substan tially as described.

7. In an attachment for cloth rest mech anism embracing a bracket, two adjacent oppositely disposed fingers freely pivoted thereon one of said fingers tending normally to press upward and the other finger tendingnormally to press downward to engage opposite sides of the cloth, substantially as described.

In witness whereof, I have subscribed the above specification. FRED C. WOOD. In the presence of ANNA BEATRICE BURKE, BLANCHE L. NORTON.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Washington, D. G.

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