US1182279A - Sewing-machine braider or corder. - Google Patents

Description

I. D. KARLE.

SEWING MACHINE BRAIDER 0R comm.

APPLICATION FILED AUG-2.1913.

Patented M5 9, 1916.

WITNESSES.

THE COLUMBIA PLANOCIRAPH c0. WASHINGTON, D a.

E ll

JOHN D. KARLE, OF ,NEWARK, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFAC- TUBING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE BBAIDER OR GORDEB.

Specification of Letters Patent.

Patented May 9, 1916.

Application filed August 2, 1913. Serial No. 782,629.

useful Improvements in Sewing-Machine Braiders or Corders, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has for its object to insure precision in the presentation to the stitchforming mechanism of a sewing machine of braids or substantially flattened cords of that class having a ribbed face with an intermediate groove in which the fastening stitches are to be laid.

The invention consists in a carrier of suitable form provided with a thin guiding rib adapted to enter the groove or crease in the braid and with guard flanges upon opposite sides thereof to securely house the braid and prevent its displacement from operative relation with the guiding rib. In a modified form of the device, the laterally spaced guard-flanges form theintegral side walls of a channel having an intermediate slot entered by the guiding rib which is mounted upon a separate spring-arm secured. to the carrier.

In the accompanying drawings, Figure 1 is a perspective view representing a sewing machine throat-plate provided with the present improvement, and representing a section of material upon the lower face of which a braid is being secured. Fig. 2 is a perspective vlew of the under side of the attachment, and Fig. 3 a perspective view of the carrier for the guiding elements detached from the base-plate. Fig. a is a perspective view of the carrier with guiding elements of an alternative form, and Figs. 5 and 6 similar views of the separate parts thereof.

Referring to Figs. 1, 2 and 3, the throatplate 1 is provided with the usual feed-dog apertures 2 with extension 3 which is in practice formed with the usual needle-hole entered by the needle 4 in performing. the stitching operation.

The attachment base 5 is of segmental form and provided upon its under face at the extremities with the fastening hooks 6 adapted to engage the straight edged margin of the throat-plate and intermediate its extremities with the integral stud-pin T which in practice enters an aperture in the throat-plate to properly locate the attachment in a manner well known.

. The base member 5 is formed with integral rivets 8 entering apertures 9 in the shank 10 of the carrier-arm 11 which is provlded with a forwardly projecting extension 12 having the central depending guiding rib 13 and the laterally spaced guard-flanges 14 embracing the same and disposed wholly in front of the needle aperture of the throat-plate. The guardflanges 1% are somewhat deeper than the central rib and the carrier is sustained with the edges of such flanges resting upon the face of the throat-plate. The shank 10 is arched slightly adjacent the member 11 to form a guide-loop 15-beneath which the ribbed cord or braid a is led to the housing channel containing the guide-rib 13 which latter has an operative edge which is preferably' wedge-shaped in cross-section, as represented in the drawings, but which is in any case sufliciently thin to enter the groove or crease in the upper face of the braid. In the modification represented in Figs. 4, 5 and, 6, the carrier is constructed substantially in accordance with that of the'precedmg figures, excepting that the top of the channel boundedby the guard-flanges 14 is provided with a slot 16 through which projects the depending guide-rib 13 at the outer end of the spring-arm 17 secured upon the carrier member 11 by means of the rivet 18. In both forms of the attachment, the carrier is sufliciently resilient to enable the guiding elements to yield in accommodating it to irregularities in thickness of the braid or cord; but by providing a yielding support for the guide-rib 13 this element is adapted to rise and fall with variations in the depth of the groove in the braid or cord while permitting the edges of the guard flanges to remain seated upon the throatplate for insuring the proper confinement of the braid or cord in proper register with the guiding rib.

In the operation of the attachment the guiding rib, which extends preferably slightly below the normal bottom of the groove in the braid, maintains a slight pressure thereon by reason of its slight distortion and its elasticity, so that the braid is accurately guided across the path of the needle to cause the stitches s to be substantially concealed in such crease. This pressure of the guide-rib upon the braid also tends to prevent any turning of the latter upon edge in rounding abrupt bends in an ornamental pattern, such as that represented in dotted lines Fig. l.

The spring-armv 17 is shown provided at one edge with a thumb-nail projection 19 by means of which the operator may raise it to retract the guide-rib 13 out of operative position so as to. accommodate ordinary smooth-faced fiat. braid or braids of other form than that represented in Figs. 1 and 3. While the attachment is shown herein constructed with fastening means whereby it is secured to the throat-plate, it is evidently immaterial to the present invention to what'particular part of the work-s11pport its securing means may be directly applied, as the sewing machine bed-plate or the bedplate slide would obviously serve equally well as a support therefor, so long as the braid-guiding element is properly positioned relatively to the stitch-forming mechanism and the work.

Having thus set forth the nature of the invention, what I claim herein is 1. A sewing machine braider comprising a yielding arm provided at one end with a braid-guiding rib having a thin operative edge to enter a crease in the braid and guard-flanges upon opposite sides thereof and at the other end with means for securing it to a sewing machine work-support.

2. A sewing machine braider comprising a yielding sheet metal carrying arm provided at one end with a guiding rib having a thin operative edge to enter a crease in the braid and with guard-flanges of greater depth embracing andspaced from said rib and at the opposite end with means below the level of said guard-flanges for securing it to a sewing machine work-support.

3. A sewing machine braider comprising a carrier formed with a braid-channel and a spring-arm overlying said carrier and provided with a guide-rib adapted to enter said channel for engagement of one style of braid, means being provided whereby said guide-rib may be maintained retracted from said channel for other styles of braid.

4. In combination with a sewing machine work-support provided with a needle-aper ture, a braider comprising a carrierhaving means for securing it to the work-support and provided with a braid-guiding rib having a thin operative edge to enter a crease in the braid and directed toward said needle-aperture and guard flanges upon op.p.o site sides of and normally connected with and having a fixed spacing from said rib and disposed wholly in front of the needleaperture.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses.

lVitn-esses HENRY J. MILLER, HENRY A. KRONEMANN.

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

' Washington, D. 0. a i

JOHN D. KAR-LE.

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