US1838107A - Cloth holder - Google Patents

Description

$- PICARD CLOTH HOLDER Dec. 29, 1931.

Filed March 20, 1929 IN VEN TOR. (fia/zzkias aka/a:

gala-w flm A T TORN E YS.

Patented Dec. 29, 1931 STATES STANISLAS rrcann, on PROVIDENCE, nnonn ISLAND, ASSIGNOR T 13. B. a n. nnren'r CORPORATION, or rnovrnsncn, nnonn ISLAND, A conronnrron or EHODE IsLAnn CLOTH HOLDER Application filed March 20, 1929. Serial No. 348,513.

This invention relates to a cloth holder for a machine for extracting threads in connection with hem stitching and the like; and has for its objectto provide a construction 3 which will cooperate with the feeding means for the cloth to stretch the cloth and hold it taut while being acted upon by the needle.

A further object of the invention is the provision of a cloth supporting plate which presents diverging edges on either side of the cloth piercing member to cooperate with corresponding diverging edges of shoes or presser means to engage the cloth to stretch and hold the same tight while being acted upon by the cloth piercing member.

This invention further consists in the undercutting or beveling of the edges of the shoes which are mounted on the presser feet to assist in stretching the cloth as the presser feet move downward to clamp the cloth'in position.

With these and other objects in view, the invention consists ofcertain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings: Fig. l is a front elevation of that portion of the thread deflectingmachine for holding the cloth as operated upon by the thread deflector.

Fig. 2 is a perspective view of the throat plate of the machine showing the opening y through which the deflector needle passes and the feed dogs in position with the cloth supporting plates on either side of the feed dogs with their edges diverging in the direction of feed. Fig. 3 is a perspective view of one of the presser feet which i common to this type of machine. r i I Fig. 4 is a perspective view of a pair of shoes which are mounted upon the presser feet.

Fig. 5 is a top plan view of the relation of the presser feet and the supporting plate showing the cooperating wedge-shaped portions of each. v

.Fig. 6 is a sectional view'ta-ken through a of machine I do not limit it to this particular with suitable openings 12 through which feed the deflector opening and showing a piece of cloth as being fed through the machine.

Fig. 7 is a sectional view showing the relation of the cloth supporting plate and presser means. I @165 Inthe operation of thread extracting machines which are used to remove the threads in hem stitching operations, the operator must hold the cloth tight on either side of the deflector needle as the cloth is being fed; .60 through the machine in order that the threads which it is desired should not be removed will notbe ruptured orbroken during theremoving operation, and in order that the constant attention of a skilled operator will notrfib be required and that a less skilled operator 'may be employed, I have provided a contracting machine used in connection with chine or other machine in which the cloth operated upon is pierced by some member or desired operating instrument and 'altho I have illustrated and described this invention in connection with this particular type type of construction.

With reference to the drawings, 10 designats the tableor work support of the machine in which a throat plate 11 is provided dogs 13 operate to advance the cloth through the machine in the well known manner of lifting the feed dog by a cam into engagement with the cloth 14 which upward movement also lifts the presser means 15 to release it after which a rearward movement in the direction of the arrow A feeds the cloth along the presser means over the throat plate and the table a short distance and then. the feed dogs are lowered permitting the presser means to again clamp the work at the time of operation of the deflector 16 as will be more fully described. The usual opening 17 is provided in the throat plate to receive the deflector needle 16 which is suitably reciprocated.

The pres'ser means 15 consists of a pair'of feet 18 at theend of rods 19 which are forced downwardly by means of springs 20, the rods l qfbeing supported in a suitable yoke 21,

and on each of these feet I have mounted a shoe 22 which is provided with a pair of upstanding projections 23 to extend along each edge of the foot 18 and through openings 25 and 26 in the projections and feet a pivot pin 24 extends to pivotally mount each shoe to vary the thickness of the-cloth on either side of the feed dogs.

. throat plate 11.

Iihave mounteda 'cloth supporting means the .form of a ,pair of spaced plates 29 which {present edges 30 perpendicular to the These edges diverge from eachwtherin the directi'on'of the feed of the clothsoas to be Spaced apart a greater distance as they rec'ede from the front of the machine and present sharp corners 31 between which and the undercut beveled edges 32 of each of the shoe 22 the cloth 14 is "cIampedg-a's is illustrated in Fig. 1. By rea- :son of this undercut or overhanging'ed-ge of each of'the shoes "as the presser descends und'er action of the springs 20 the "cloth is stretchedand tightly bound between the-corner edge '31 and some point along the :bevel or under cut surface -32-of the presser shoes holding it taut for action by the deflector or needle to remove the threads in the customa-ry manner.

The operation of the presser shoe in confeet for releasing the cloth from binding engagement with the corner edge- 31 permitting the feed dogs to move the cloth rearwairdly after which the cloth is again clamped 'theshoes between the inclined edges thereof and the'corner edge31.

';It will also be understood that the shape of the parts is such that as the cloth moves rearward-1y the diverging edges "between which it is'cl-amped will cause the cloth to be stretched tightly and held taut by the presser shoes foractionbythe deflector needle 16 a'nd .yet these presser shoes are adapted to move one relative to the other or swing upon the member. unction with the feed dogs raises the presser presser feet to accommodate themselves to various imperfections or knots in the cloth. Each of the shoes is curved upwardly as at 33 which assists in the accommodation of imperfections and in ironing out any folds in the cloth as the same is fed into position for operation.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve-the privilege of resorting to all the mechanical changes to which the device is susceptible, 'th'e invention being defined and limited only by the terms of the appended claims.

I claim: Iii-combination with a cloth piercing machine having'a throat plate anda piercing member for passing through the iplatya cloth supporting means presenting a'surface raised from said throat pla'te terminating ateither sideof said member to present spaced raised marginal edges in a straight line extending -a substantial distance in front of and to the rear of the piercing member, and presser means positioned between spaced edges and shaped to-cooperate withsaid'edges and hold the clothv tight between them as acted upon by said member.

2. In a machine of the character described, a cloth piercing member, a work supporting plate, ineans having an opening adjacent the cloth piercing member generally wedge shaped with the distance between the edges of the material about the'ojpening increasing "in the direction of feed of the cloth, and

presser means of a shape to cooperate with the edges of said opening to hold the cloth tight-as operated 11513011 by the cloth piercing member.

B. In combination with a cloth piercing machine having a throat plate and piercing member for passing through the plate, a cloth supporting means presenting a surface raised fromsaid throat plateand terminating at either :side of said member and presenting spaced edges diverging in the direction of feed-of t'hecloth and presser means shaped to cooperate with said edges and hold the cloth tight between them as acted upon by said 4. In a machine of the character'described, a cloth piercing member, plate means for supporting the work having an opening adjacent the cloth piercing member generally wedge shape with the distance between the edges of the plate means about the opening increasing in the direction of feed of the cloth, and presser feet having shoes with their outer edges diverging to engage said edges and hold the cloth tight while being acted upon by said member.

5. In combination with a cloth piercing machine having a throat plate and a piercing member for passing through the plate, a cloth'si'lpporting means presenting a surface raised from said throat plate and terminating at either side of said member and presenting spaced edges diverging in the direction of feed of the cloth, and presser feet having shoes with their outer edges diverging to engage said edges and hold the cloth tight while being acted upon by said member.

6. In combination with a cloth piercing machine having a throat plate and piercing member for passing through the plate, a cloth supporting means presenting a surface raised from said throat plate and terminating at either side of said member and presenting spaced edges and presser means positioned between said edges and having undercut beveled edges to engage the said spaced edges of said surface to stretch and hold the cloth tight when clamped therebetween.

7. In a machine of the character described,

a cloth piercing member, a work supporting plate, means having an opening adjacent the cloth piercing member generally wedge shape with the distance between the edges of the plate about the opening increasing in the direction of feed of the cloth, and presser means of a shape to cooperate with the edges of said opening to hold the cloth tight as 0perated upon by the cloth piercing member, said presser means having undercut beveled edges to cooperate with the edges of said opening to stretch the cloth as clamped.

8. In combination with a cloth piercing machine having a throat plate and piercing member for passing through the plate,

a cloth supporting means presenting a surface raised from said throat plate and terminating at either side of said member to present spaced edges diverging in the direction of feed of the cloth and presser means shaped to cooperate with said edges and hold the cloth tight between them as acted upon by said member, said presser means having undercut beveled edges to engage the said spaced edges of said surface to stretch and hold the cloth tight as clamped thereby.

9. In a thread removing machine, a throat plate having an opening therein, a thread deflector to extend through said opening, feed dogs operating through said plate, cloth supporting plates spaced apart and located on either side of said deflector, said plates each having an edge perpendicular to said throat plate and diverging from each other in the direction of feed of the cloth, a pair of presser feet, a shoe pivoted on each of said feet, said shoes being in contiguous relation with the outer edges diverging and undercut to cooperate with the edges of said supporting plate to stretch the cloth and hold it tight 1 while being operated on by the deflector.

In testimony whereof I aflix my signature STANISLAS PICARD.

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