US2876469A

US2876469A - Cement lasted shoes having a perforated welt

Info

Publication number: US2876469A
Application number: US539218A
Authority: US
Inventors: Jerome A Rubico
Original assignee: WRIGHT BATCHELDER CORP
Current assignee: WRIGHT BATCHELDER CORP; WRIGHT-BATCHELDER Corp
Priority date: 1955-10-07
Filing date: 1955-10-07
Publication date: 1959-03-10
Anticipated expiration: 1976-03-10

Description

March .959 A. RUBICO 2,876,469

CEMENT LASTED SHOES HAVING A PERFORATED WELT Filed Oct. 7, 1955 IN VEN TOR.

jg a Man 7 ,M W $27M United States Patent CEMENT LASTED SHOES HAVING A PERFORATED WELT Jerome A. Rubico, Boston, Mass., assignor to Wright- Batchelder Corporation, Boston, Mass., a corporation of Massachusetts Application October 7, 1955, Serial No. 539,218

2 Claims. ('Cl. 12-142) This invention comprises within its scope a new and improved shoe of the cement lasted or Compo type, a novel process of making the shoe, and a new type of welting employed in its construction.

An object of the invention is to provide cement lasted shoes with a decorative bead that greatly enhances their ornamental appearance without in any way impairing structural strength or adding objectionable bulk to its fine lines or style. The bead is incorporated in a welt strip of synthetic resinous material and may be readily supplied in any desired color contrasting or blending with the shoe upper. It may also be varied in dimensions from a band of substantial width to a delicate stripe or line.

The beaded welt of my invention is provided with a perforated attaching flange adapted to be laid over and upon the lasted margin of the upper and between the lasted margin and a sole or midsole. The flange merges at its outer edge into an upstanding bead that encloses portions of the upper and the contiguous sole and so forms a decorative element between the two.

The problem of permanently securing the welt in place by practicable shoemaking steps requiring no special skill on the part of the operator has been solved by the process of the present invention. In accordance therewith a layer or ribbon of cement is first laid upon the lasting margin, the perforated welt is applied with its attaching flange impressed upon the cement layer so that cement wells up in the perforations of the flange. The cement system is completed by laying a second cement layer or ribbon upon the attaching flange in such a manner that the cement of the two layers merges through the perforations of the attaching flange. Now, when the sole is laid under pressure, it becomes bonded in the shoe bottom by adhesive attachment with the cement system which extends from the lasting margin through and about the perforated attaching flange of the welt.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which:

Fig. 1 is a view in perspective of a short piece of perforated welting employed in the construction of the shoe,

Fig. 2 is a plan view of the shoe bottom with portions broken away,

Fig. 3 is a fragmentary view in elevation of the forepart of the finished shoe, and

Fig. 4 is a fragmentary sectional view of the shoe bot-, tom on a greatly enlarged scale.

The perforated welt as shown in Fig. 1 has a pinked attaching flange of which each element is formed with a triangular perforation 11 symmetrically arranged so that each wedge-shaped element formed by the pinking notches has side walls of uniform width. It is important that the attaching flange should be pinked in order that the welt may be readily conformed to the curvature of the shoe bottom, while the shape of the perforations is of secondary importance so long as they furnish a series of regu- 2,876,469 Patented Mar. 10, 1959 larly spaced wells or cavities in the flange. The attaching flange merges outwardly into an upstanding head 12 having a smoothly curved outer surface and a curved inner wall merging through a fillet into the upper surface of the attaching flange. As shown in Fig. 1 it will be seen that the bead 12 overhangs a portion of the attaching flange.

The improved process of the invention and the manner of utilizing the welt of Fig. 1 is well illustrated in Fig. 2 which shows the bottomof a lasted shoe in which the overlasted margin 13 is cemented to an insole 14. In proceeding with the process a layer or ribbon of cement 15 is laid upon the lasting margin 13 and then the welt is applied and its perforated attaching flange 10 pressed into the cement layer 15 so that the cement wells up in the perforations 11 of the flange from the underlying surface of the upper. After the welt has been laid, a second layer or ribbon of cement 16 is placed upon the attaching flange and it thereupon merges with the cement of the lower layer 15 which has already welled up in the perforations 11. A cement system is thus formed which starts with the overlasted margin 13 and presents an exposed adhesive face above the attaching flange of the welt. The cement which fills the perforations 11 of the attaching flange existsin the system as sprues or slugs that merge at their ends into the underlying and overlying layers of cement 15 and 16.

A bottom filler is now inserted in the space formed by the lasted margin 13 and this may take the form of a felt blank 17 as shown in Fig. 2 or it may be formed of plastic bottom filler.

An outsole or midsole 18 is now laid on the shoe bottom in accurate position and adhesively bonded in place by pressure, and heat if necessary, through the medium of the cement system above described. It will be seen that the bead 12 of the welt closely embraces the upper 19 adjacent the sole edge as shown in Figs. 3 and 4. In Fig. 4 is shown a portion of the last 20 and in this figure the thickness of the adjacent layers 15 and 16 is greatly exaggerated in order that their location may be readily seen. In practice there is no visible separation between the flange 10 of the welt and the sole 18. The appearance of the finished shoe is more accurately shown in Fig. 4.

In carrying out the process as above described the perforated welt is laid upon the cement-carrying lasted margin of the upper but it is contemplated that in some cases it may be more convenient to place a band of cement on the inner marginal face of the sole or midsole and lay the perforated Welt thereon. The sole with the attached welt is then laid on the shoe bottom and the welt brought into contact with the cement band 15 previously applied to the lasted margin 13. In either procedure the cement may be activated by heat or solvent when that is desirable. By either procedure the same shoe structure and the same cement system is arrived at.

Having thus disclosed my invention and described in detail illustrative embodiments or examples of its three phases, I claim as new and desire to secure by Letters Patent:

1. The process of making shoes which is characterized by the steps of cement-lasting the upper, coating the overlasted margin with a ribbon of cement, laying a beaded welt having a perforated attaching flange upon said cement and causing the cement to well upwardly from the underlying surface of the upper through the perforations of the attaching flange, coating the attaching flange with cement which merges with that already in its perforations, then laying a sole and securing it in the shoe bottom by bonding with the cement system as described which includes sprues or slugs of cement that merge at their ends into underlying and overlying adhesive layers upon the sole and the upper respectively.

2. The process of making shoes which is characterized by the steps of layinga ribbon of soft cement upon the overlasted margin of the upper, pressing upon the cement ribbon at welt having an attaching flange with spaced triangular perforations therein and thus causing cement to flow upwardly from the underlying surface of the upper in the form of sprues in the perforations of the attaching flange, spreading a second ribbon of cement across the upper ends of the sprues thus connecting the two cement layers as spread upon the sole and margin of the upper respectively, and then bonding a sole to the cement exposed in the shoe bottom.

References Cited in the file of this patent Daniels Apr. 21, 1931 4 May Sept. 4, Goddu Jan. 1, Casanova Jan. 12, Condon --2. Mar. 16, Vizard Aug. 24, Mackensen Dec. 26, Brophy Sept. 2, Forslund Sept. 30, Foust July 10, Batchelder et a]. Nov. 20, Beestrum July 27,

FOREIGN PATENTS Switzerland Mar. 1, France -3 Nov. 23, France Jan. 27,