US1017380A

US1017380A - Welt-channeling attachment for sole-sewing machines.

Info

Publication number: US1017380A
Application number: US39688007A
Authority: US
Inventors: Carson J Cady; Joseph E Thayer
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1907-10-11
Filing date: 1907-10-11
Publication date: 1912-02-13
Anticipated expiration: 1929-02-13

Description

C. J. CADY & J. E. THAYER. WELT UHANNELING ATTACHMENT FOR SOLE SEWING MACHINES. APPLICATION FILED 'oo'r. 11, 1907.

Patented Feb. 13, 1912.

lhihhll lld i @FFEQE,

CARSON J. CADY, 0F R-QCEESTER, NEW YQBK, MED JOSEPE E. THAYER, OF WEST BRIDGEWATEB, MASSACEUSETTS, ASEaIG-NORS T0 UNITED SHOE MACHINERY OM- PANY, 0F PATERSON, NEW JERSEY, A CQBPQRATION OENEW JERSEY.

VTELT-CHANNEL'ZEG ATTACHMEB FT FOR SGLE-SEWING MACH INES.

States of New York and Massachusetts,-

have invented certain new and useful Improvements in Vv elbChannehng Attach ments for Sole-Sewing Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the some.

The present invention relates to welt channeling attachments for sole sewing ma chines and particularly to that class of welt channeling attachments which comprise a knife movable into and out of operative position, mounted independently of the work table of the machine, and arranged to extend upwardly through the work support in position to cut a stitch-receiving groove or slit in the upper surface of the we t in advance of the needle, so that thestitches, which cure the outsole and welt, can be sunk below the upper surface of the well: at the forepart or the shoe, andthe subsequent operation of forming ornamental indentations on the welt can be performed-by an ordinary indenting wheel, without liability of injuring the stitches; of the seam.

The objects of the present invention are to provide a welt channeling attachment of the class above referred to, in which the channeling knife is so shaped as to be stronger and more rigid than knives which have heretofore beenused, and in which the channeling knife can be held firmly against the thrust of the work without ending an abutmenton the-work support, so that the attachn'ient can be used with the ordinary form of work support provided with an owl and needle slot, and the necessity cutting away the work supportto form an abutment or of providing a special. form of work support is avoided,

in one form of welt channeling attachent which has hereto. ere been devised, the welt channeling knife is formed upon the upper end of an arm composed of a flat piece metal," being mounted below the work support upon is pivot, the lower end of Specification of Letters Patent.

Application filed October 11, 1887.

' rseeneearen. regrets,

Serial No. 398,886.

the arm extending in the direction of feed, and the upper end of the arm extending through the awl and needle slot of the work support To hold the welt channe "ii'ng knife in position against the thrustofthe work, it necessary, with this form of knife-carrymg arm, to cut away a portion ot the work support to form an abutment for the upper end of the arm.

In accordance with a feature of the present invention, a knife-carrying arm composed of a piece of fiat metal is provided, and this arm twisted, a short distance above its lower end, through anengle of 90, so that the metal in the upper portion of the arm is disposed in the best manner to resistthe thrust of the work, and this portion of the arm is rendered suflicient-ly stiff and rigid to maintain the welt channelingknife in position. I

Another feature of the present invention contemplates the provision, in a welt channeling attachmentprovided with 'a knife carrying arm supported independently of I the work support, of a brace arranged to engage the arm above its pivot and support the arm againstthe thrust of the work.

This feature of the invention may be used with any suitable form of knife-carrying arm, but is particularly adapted for use with the knife-carrying arm above referred to aswonstituting a feature of the present invention, since the upper portion of this arm is of suilicient rigidity to withstand the thrust of the work, and by the provision of a brace engae'ing the arm above its pivot, the lower portion of the arm is supported, and the arm can be used without the necessity of providing any abutment on the work support for the upper end of the arm. In its broader aspectsthis feature of the present invention contemplates the use of any suitable form of brace. In the preferred form of the invention, howeiver, the brace is pivotally mounted. concentrically with the knife carryin arm and is adapted to swing with the arm.

In addition to the features above referred to the present invention also consists in certain con ructions and arrangements of parts hereinafter described and claimed the advantages of which will be obvious to those skilled in the art from the following do script-ion.

ill

The present invention will be clearly understood from the accompanying drawing, in which-- I Figure 1 is a view in front elevation of the preferred form of the attachment together with so much of a sole sewing ma chine as is necessary .to show the connection of the attachment therewith. Fig. 2 is a view in side elevation of the edge gage slide of the sewing machine with the welt channeling knife mounted thereon, the knife arm beingshown as extending upwardly through the awl and needle slot of the work support, which is shown in section, and the parts being in the position which they assume when the channeling knife is in a position to cut a channel in the welt. Fig. 3 is a detail sectional view taken on the line 50-02 of Fig. 2. i Fig. 4 is a detail view of the adjustable eccentric sleeve upon which the knife carrying arm is mounted and by which it isadjusted vertically, and Figs. 5 and 6 are detail views in rear and side clevation respectively of the knife carrying In the drawing 1 indicates the curved hook needle? the work support or table, 3 the edge gage and (it the edge gage slide of sole sewing machine, such for instance as is disclosed in the patent to French and Meyer, No. 473,870, dated April 26, 1892. The slide 4 is mounted to move transversely to the direct-ion of feed upon a fixed guide 5, and is actuated at the desired times by the operator from the feed changing lever 6, said lever being connected by a link to an arm 7, secured to the lower end of a rock shaft 8, mounted in. a stationary block 9, which shaft is provided at its upper end with a slotted arm which engages a pin 7 l1 projecting downwardly from the slide 4-.

The construction, arrangement and mode of operation of the edge gage slide and the mechanism by which it is operated are well known to those "skilled in the art and need a not be more specifically described herein.

of the edge gage slide 4 by means of a bolt i l. The upper end of the knife carrying arm is provided with a welt slitting knife 15 of usual form and projects through the awl and needle slot of the work support 1 in position to cut a channel in the upper surface of the welt in advance of the needle. The welt channeling knife 15 is moved into and out of operative position in the usual man" ner by moving the edge gage slide t, the knife. being projected when the edge gage slide is moved. forward and being retracted when the edge gage slide moved to the toriya eo rear. To enable the knife to be projected and retracted in this manner it is necessary that the p1vot for the lower end of the knife carrying arm extend in the' direction of feedas will be obvious from an inspection of F igs. 1 and 2. To enable the knife carrying arm to be so pivoted and at the same time to give the arm the greatest possible strength and rigidity, the arm is twisted through an angle of 90 a short distance above its lower end, so that the greatest width of the up per end of the arm extends in the direction of feed. The twisting of the arm causes its upper end to be of suiiicient rigidity to support the channeling knife against the thrust of the work so that the upper end of the arm can extend loosely through the and and needle slot of the work support and no sup porting abutment for the upper end of the arm is required. To prevent the arm fromv yielding at its lower end when. the work is forced against the welt channeling knife, a brace 16 1S provlded, which brace consists of an arm pivotally mounted upon the bolt 14: outside of the sleeve 13 and having its up per end arrtlnged to engage the arm 12 above the point at'which is twisted. To cause the brace to swing "with the knife carrying arm and to prevent its being accidentally disengaged therefrom, the upper end of the brace is provided vwith lugs extending on each side of the arm.

1.'A sole sewing machine, having, in combination with the stitch forming devices, a work support, an arm pivotally mounted below the work support upon an axis extending in the direction of feed and having its upper free endv engaging the awl and needle slot of the work support, said arm consisting of a flat piece of metal having its lower end port-ion arranged at right angles tothe upper portion, a Welt channeling knife upon the upper end of the arm, and a movable support for the lower end of the arm.

2. A sole sewing machine, having, in combination with the stitch forming devices, a work support, an arm pivotally mounted be low the work support and having its upper free end engaging the awl and needle slot of the work support, a Welt channeling knife upon the upper end of the arm and a brace specifically described, what is claimed is engaging the arm above its pivot and acting to support the arm against the'thrust of the work.

3. A sole sewing machine, having, in combination with the stitch forming devices, a work support, an arm pivot-ally mounted be- 7 low the work supportand having its upper free end engaging the 'awl and needle slot of the work support, said arm consisting of a flat piece of metal twisted through anangle of 90 near its lower end, a welt channeling knife upon the upper end of the arm, and a brace engaging the arm above the point at which'it is twisted.

1 4. A sole sewing machine, having, in combination with the stitch forming devices, a work support, an arm pivotally mounted be low the work support and having its upper free end engaging the awl and needle slot of the work support, a welt channeling knife upon the upper end of the'arm, and a brace pivotally mounted to move with the arm engaging the arm above its pivot.

5. A sole sewing machine, having, in com-' bination with the stitch forming devices, a

'ing witnesses.

work support, an arm pivotally'mounted below the work support and having its upper free end engaging the awl and needle slot of the work support, a welt channeling knife upon the upper end of the arm, a pivotally mounted brace engaging the arm above its pivot, and a bolt passing through andsupporting the arm and brace.

In testimonywvhereof I, the said CARBON J. CADY, have signed my name to this specification in the presence of two subscribing Witnesses': 'FREDERIOKL. EDMANDB, HARRY C.

. JosEPH E;