US1861322A - Blind nail concealed stitch welt - Google Patents

Description

May 31, 1932. R. c. SCHEMMEL BLIND NAIL CONCEALED STITCH WELT Filed June 27, 1928 maaaakw gwueniot I fl/S Gum Patented May 31, 1932 UNITED STATES ROBERT C. SCHEMMEL, 0F UNION CITY, INDIANA BLIND NAIL CONGEALED STITCH WELT Application filed June 27,

My present invention relates to welts, gimps and bindings, but more especially to finishing welts such as used in the construction of automobile tops and vehicle bodies, in the upholstery of furniture, or wherever it is desired to cover up the meeting or overlapping edges of materials and produce a finished effect.

The invention has for an object the production of a novel and attractive Welt of the blind nail type, made of leather or leatherized fabric, wherein all structural stitches are effectually concealed from view, and wherein there are corresponding or twin bead elements hinged to and surmounting a base adapted to be forcibly spread apart oppositely for the introduction of tacks or other fastening means, and, when released, to automatically resume their normally closed contacting relation in parallelism, thereby closing over and concealing the said fastening means, substantially as illustrated.

The invention will be hereinafter particularly described and then pointedout by the claim following.

In the accompanying drawings which form part of this application for Letters Patent and whereon like numerals indicate corre sponding parts in the several views:

Figure 1 is a fragmentary perspective view, in section at one end, of a length of finishing welt constructed according to the preferred form of the present invention;

Fig. 2 is also a fragmentary view in plan showing a portion of welt of indefinite length having its superimposed hinged members or beads temporarily spread apart at one point to receive a tack or other fastening means as shown;

Fig. 3 is a relatively enlarged transverse vertical section through welt and one fastening tack in its closed or operative relation of parts;

Fig. 4 is also a transverse vertical section through welt, but showing the hinged surface beads fully spread as when receiving a fastening tack; and

Fig. 5 is one modified form of the invention, being a relatively enlarged transverse vertical section corresponding substantially with Fig. 3, but illustrating a multiple or 1928, Serial No. 288,748.

three-fold overlapping base in piace of that shown by the preceding illustrations, and omitting one line of stitches through each of the surface beads.

Reference being had to the drawings and numerals thereon, 1 indicates a flexible weltcover or one piece envelope, of leather or a suitable fabric properly leatherized and grained in imitation of leather. This leather, or leatherized or other fabric material, when used in construction of the present stitchconcealed form. of blind-nail welt, is first doubled upon itself on both sides of its longitudinal center, as at 2, 2, adjacent to what eventually becomes the opposite outside edges of the finished welt. Just inside of the aforesaid cover folds 2, 2, the two thicknesses of material are then securely stitched together as at 3, 3, these respective rows or lines of stitches eventually serving the purposes of hinges, as will later appear. The numerals 4, 4, indicate bead cores or fillers made of any suitable material and shape, but preferably of half-round molded rubber, each having a slight continuous surface depression 5 in its upper surface just inside of its longitudinal center to receive a line of stitches 6, by which these core members 4 are each securely attached to one fold 7 of the unitary cov'er material 1 starting for example at 8, passes in opposite directions beneathand entirely around both core members 4, thence doubles upon itself inwardly as at 1 to form a twoply base as best shown by Figures 1 and 4.

When constructed and arranged substantially as shown and described, it will be noted that heads 4, 4, are capable of being forcibly spread apart, hinging upon their respective lines of stitching 6, 6, as clearly shown by Figure 4 of the drawings, to readily permit the introduction of nails, tacks or other fastening means 9 to be driven into woodwork such as 10, or other surface serving as a support for the welt. It will be observed also that when beads 4, 4, are oppositely spread as aforesaid, upon their hinges 6, 6, as a center, the welt base 1 plus 1, is raised slightly as at 11, 11. The driving of tack 9, however, serves to straighten out the welt base,

material 1. This cover and by agency of the stitches 3, 3, automatically and forcibly returns the beads 4, 4 to their normal closed position shown by Figure 3, to effectually cover and conceal t e heads of tacks 9.

It will also be noted by reference to Figures 1, 3 and 4 of the drawings, that the continuous longitudinal depressions 5, 5, provide a suitable housing for their respective lines of stitching 6, 6, so that the covering 1 for the upper surface of the bead fillers 4, 4, presents a smooth and sightly appearance.

Referring particularly to the modified Figure 5, it will be noted that in this instance the stitches 6, 6, are omitted, that the weltbase is a three-ply structure, and that instead of starting from acentral point as indicated at 8 in the preceding figures, the covering material 1 starts at 8 and terminates at 8", thus making a complete under lap of the material, which allords an additional base layer, and in this construction, if desired, there may be employed an additional centrally located line of base stitches 12.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

A finishing welt comprising a covering fabric having an upper base ply folded inwardly along its outer edge to provide a bottom bead ply, a top bead ply continuing from the inner edge of the bottom bead ply, extending thence over the outer edge fold common to the upper base and bottom bead plies and having its terminating margin secured to the bottom surface of the upper base ply to form therewith a multi-ply base, a substantially solid core contained between the bottom and the top bead plies, a line of stitching passing through the core and the bottom bead ply near the edge fold common to the bottom and top bead plies for securing said bottom bead ply and said core together, and another line ot' stitching passing through said upper base and bottom bead plies only, close to their common edge iold, securing said plies to gether in hinged relation.

In testimony whereof I affix my signature.

ROBERT C. SCHEMMEL.

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