US269240A - Die for forming carriage-curtain loops - Google Patents

Description

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L. 'I'. SMITH.

DIE FOR FORMING CARRIAGE CURTAIN LOUPS.

1\To. 269,240. Patented Deo.19, 1882.

'loops of harness-leather by dies would not an- NTTED STATES PATENT Ormea.

LYMAN T. SMITH, 0F NEW HAVEN, CONNECTICUT.

DIE FOR FORMING CARRIAGE-CURTAIN LOOPS.

SPECIFICATION forming part of Letters Patent No. 269,240, dated December 19, 1882.

Application tiled October 15, 1881. Renewed May 10, 1882. (No model.)

To all whom it may concern:

Be it known that I, LYMAN T. SMITH, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut,haveinvented new and useful Im'- provements in Dies forForming Carriage-Uurtain Loops, of which the following is a specification.

Hitherto patent-leather loops for carriagecurtains have been made by holding the leather with the bands upon a bed former, and by a suitable hand tool press and crimp the leather over and around the base of the former to give form to the loop, and then using the tool to press and work the leather into the ornamentin g grooves in the face of the former, both the forming and the ornamentin g operations heing eiiected by hand, rendering the work slow and the-loops more or less imperfect in the crimping and in the ornamentation. The usual way of producing carriage-curtain sw er for prod ucin g suchloops of patent-leather, because it would crack and be cut under the crimping and embossing action; but as a patent-leather finish to the loop gives a better finish to the curtain and is better suited for line work it is important that the cost ot' their production be reduced as much as possible .and the crimp and ornamentation be rendered permanent. This I eii'ect by the operationof dies in which a removable cushion or yielding supporting-surface and a crimping-plate are used, the latter to give the crimp and form to the loop over the matrix and the cushion to give a fullness to that portion of theloop which is above the face ofthe matrix, these two things being effected in the operation ot' crimping the loop and before the action of the die to give the ornamentation to the loop, the accomplishment of which is only rendered possible without cracking or splitting the loop by the withdrawal of said cushion tol'orm aspace between the under side of the loop and the face of the matrix before such action ot' the die 0r stamp. This fullness is formed in the loop within the opening in the crimping-plate, and the action of the die takes u p this'fullness in the grooves or depressed surfaces of the matrix in embossing or ornamenting the loop and in -completing the crimp of the embossed surface. This fullness therefore forms an equivalent for the drawing action of a die upon patent-leather were it drawn tightly over the matrix when receiving such die action.

Referring to the accompanying drawings, Figure 1 represents in perspective dies embracing my improvements for producing patent-lea'therloops for carriage-curtains, the loop being shown as having' been formed under the operation of theerimping-plate and upon the cushion which gives fullness to said loop above the matrix; Fig. 2, a similar view, the die and crimper parts having the same relation to each other, but showing the cushion removed and the fullness given to the loop thereby; Fig. 3, a similar view, showing the die properin position to emboss and complete the loop; Fig. 4,

an end view, the die parts shown asin Fig. 3; Fig. 5, a vertical longitudinal section ot' Fig. 1; Fig. 6, a similar sectional view of Fig. 3; Fig. 7, the removable cushion Fig.' 8, the formed and embossed loop; and Fig. 9, the matrix or bed, showing the depressed edge surface or rabbet for the lapped edge of the loop.

The loops are formed with one end pointed and closed, and are adapted to receive and in- :close the fastening-straps of carriage-curtains.

The matrix or bed a has the required form and surface mold, and the die bis ofcorresponding form, and has a raised surface matching theI matrix. These two parts are preferably of copper, to prevent corrosion, and are secured to carrying'plates suitable for the purpose. A plate, c, formed with anopening, d, corrcsponding to the shape ofthe matrix, is adapted to receive the latter, and constitutes the crimper. The depth of the opening d in said plate is greater than the projection or height of the matrix therein, and the wi'dthot the latter suflciently less than that of said opening to allow the leather being formed into the loop to be pressed by the crimper over the sides ot' said matrix, while the sides of said ermperopening diverge toward the base of the matrix, whereby the latter and the said plate c co-opcrate to receive and crimp the leather and give form to the loop by pressure applied tothe crimper by a press or otherwise, as shown in Fig. 1.vl lu this operation the loop is crimped IOO and formed over a cushion, e, of leather, india rubber, or other suitable material, placed upon the matrix, so that upon the withdrawal of' the cushion a fullness is left inthe loop above the matrix equal to the thickness of the cushion. It is this fullness that prevents the cutting of the loop in the operation of embossing and completing the loop by the die, which is then brought into action upon the loop by a press or otherwise.V In this action of the die its raised surfaces will take up the. fullness in the loop Withoutdrawingthe leather tight over the edges of the matrix. In fact, the edges ofthe loop Will be given a slight fullness over the edges of' the matrix in the embossing operation, in which the die enters the opening d, leaving` a space around its sides. The matrix and the die enter nearly equally within the opening` in the crimper, and the dieplate and the matrix-plate are. provided with guide-pins g, which enter corresponding holes, h, in the erimper-plate to insure the proper matching of the parts. The square ends of the die and of the matrix are preferably even with the endv of the erimper-plate, and the opening d at said end allows the cushion to be Withdrawn from the crimped loop, as stated. The piece of leather to form the loop must be large enough to leave a margin for the ypresserfoot of the sewing-machine in sewing the loop to the curtain, and this margin is clamped by the criuiper upon the matrix-plate in forming the loop.

Bordering the front edge ofthe matrix-plate, and extending over the sides and top of the front end of the matrix, is a depressed surface part or rabbet, i, such depression being equal to the thickness of the leather, and within and along such depression the turned-in edge of the loop lies to allow of a uniform pressure and crimping of the loop around the base of the matrix.

To form the loop the cushion is placed upon the matrix, the piece of leather dampened,

` placed upon and slightly crimped by hand over the cushion. The crimping-plateisthen placed upon its guide-pins and over theleather, so as to receive it within the opening d, the parts thus `united being then putin a press andthe erimploop is formed lit is stitfened by any suitable varnish applied to its inner surface. 'Ihe surplus margin is trimmed around the edge after the loop is sewed to the curtain. The matrix and die are so formed as to give the embossed surface of the loop a taper to its closed end.

rIhe cushion is preferably of harness-leather, has a slight surface taper to its point, and a cross-notch on its under side near its outer end to gage its position upon the matrix.

Although I have described the manufacture y of carriage-curtain loops ot' patent-leather in connection with a removable cushion used in the crimping operation, it is obvious that loops of harness-leather may be made without the use ofthe cushion in the. crimping operation.

I claiml. For making leather loops for carriagecurtains, the combination, With the die, the crimping-plate, and the matrix or bed, of a removable cushion having tlie form of the loop, held in place and used, substantially as Adescribed, for the purpose specified.

2. The combination ofthe die b and the matrix or bed a with a crimping-plate,c, having an end opening, and a removable cushion, @,having a hand-hold and adapted for use with the matrix or bed, substantially as described,

for the purpose specified.

3. The matrix a and its bed-plate having a depressed surface or rabbetn, at the front end, in combination with the crimping-plate c, having the end opening, d, the die b, and the removable cushion e, all constructed and adapted for operation, substantially as described, for the purpose specified.

4. The combination ofthe die b and the matrix a with the crimping-plate c, having an end opening, d, adapted to receive the matrix in the operation of crimping the loop and the die in the subsequent operation of embossing or ornamenting the surface and finishing the loop, substantially as described. y

5. The process of making leather loops for carriage-curtains, consistingin iirst crimping the. leather blank and partially forming theA loop portion over a yielding supporting surface, then removing such yielding supi'iorting` surface and completing the forward ornamen- IIO tation of such loop upon a rigid matrix, substantially as set forth.

In testimony whereofI have hereunto set my hand in the presence of tivo subscribing Witnesses. i

LY'MAN T. SMITH Witnesses:

A. E. H. JoHNsoN, J. W. HAMILTON JoHNsoN.

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