US2500937A

US2500937A - Boot with welted sole construction

Info

Publication number: US2500937A
Application number: US726778A
Authority: US
Inventors: Paul D Earl
Original assignee: Cambridge Rubber Co
Current assignee: Cambridge Rubber Co
Priority date: 1947-02-06
Filing date: 1947-02-06
Publication date: 1950-03-21
Anticipated expiration: 1967-03-21

Description

March 2l, 1950 P. D. EARL 2,500,937

BOOT WITH WELTED SOLE CONSTRUCTION Filed Feb. 6. 1947 Z/ Pau/ D; Eaf'/ @f www www Patented Mar. 2l, 1950 BOOT WITH WELTED SOLE CONSTRUCTION Paul D. Earl, Malone, N. Y., assignor, by mesne I assignments, to The Cambridge Rubber Company, a corporation of Maryland Application February 6, 1947, Serial No. 726,778

1 claim. l

This invention relates to boots and shoes for wear in extremely cold weather wherein acertain degree of insulation of the foot from external low temperature air is incorporated, and it consists in the constructions, arrangements and combinations herein described and claimed.

It is a particular object of the invention to provide an improved sole and welt construction over that disclosed in my prior Patent No. 2,394,433, thereby insuring the production of a boot or shoe which will be more waterproof.

More specifically, it is an object of the invention to provide a unitary sole and welt which may be readily cemented to the insole and lower portion of the upper of a boot, to effectively waterproof the same. l

Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawings, wherein Figure 1 is a perspective view of a boot constructed in accordance with the invention, with the toe portion cut 01T in a plane at right angles to the longitudinal axis of the shoe so as to show the shoe in cross section.

Figure 2 is an enlarged cross sectional view of the shoe adjacent the vball of the foot thereof, before application of the outer sole and welt.

Figure 3 is a lsimilar view of the completed boot.

Figure 4 is a cross section illustrating the manner of securing the lining and insole of the boot.

Referring more particularly to the drawings and procedure in production of the shoe, a lining I5 is first stitched into the shoe vamp and stitched to the quarter and the upper I of the shoe as indicated at Ill. The vamp II and quarter I2 are joinedtogether conventionally, with a taped seam I3 at the junction of the upper and quarter. The forward portion of the vamp is preferably formed integrally with the quarter I2 at respective sides thereof but is divided longitudinally over the toe portion. The lining I is attached to the vamp and quarter and similarly divided in the vamp and toe of the shoe. The division between the vamp and lining is preferably left open until after the mid sole I9 has been attached, after assembly of the lining pieces I5 along the vamp, toe and quarter.

After assembly of the upper as indicated, a lining I5' is positioned over the foot and heel portions of the assembly and is stitched to the upper. As shown, the linings l5 and I5' are formed of eece sheepskin, suitably sheared, with 2 the fibers presented toward the inside of the shoe. In the attachment of the insole I1 together. with the vamp II and quarter I2 and lining I5, the latter having been already attached at the seam I3 and along the seam I6, if desired, or this attachment omitted until after attachment of the insole. The parts are laid together as shown in Figure 4, the edges of the lining I5, I5 and vamp II being alined, with the edges of the insole Il and then stitched as at !8. This completes the lining with the vamp and quarter attached. The middle seam I6 of the vamp may be tacked temporarily. The ,assembly is then placed on a last and the exposed under side of the insole Il is now coated with a suitable adhesive, and a thick midsole I9 of felt or other good insulating material of a flexible nature and of ,suitable thickness, previously coated with sti cement is applied, as shown in Figure 2, and it may be put under suitable pressure to eiect ya good union. Thereafter, and while the shoe is still lasted, additional adhesive is applied to the under face of the mid-sole I9 as well as upon the lower portion of the quarter I2, the adhesive being extended a substantial distance above the line of stitching I8. A crepe rubber welt 20 of a length so as to extend circumferentially around the mid-sole I9, with the ends overlapped as at 20', is applied to the adhesive surface of the upper, the welt being of a width so as to overlie the mid-sole when turned inwardly thereupon, the adhesive on the mid-sole securing the welt thereto. Adhesive is applied to the exposed side of the inturned portion of the welt and also to the mid-sole I9, if necessary, and an out-sole 2| of crepe rubber is then applied and cemented to the mid-sole.

The mid-sole I9 may be of uniform thickness throughout, extending from the heel portion of the shoe to the toe tip, and the out-sole 2| may likewise be of uniform thickness from heel to toe, although other practices may be carried out iri accordance with conventional methods. After emplacement of the out-sole as shown and described, the tacking at seam I6 may be removed and the shoe unlasted. Thereafter, the seam I8 may be permanently closed, and a tape 22 applied thereover, as an effective closure. The front and upper may be laced or otherwise closed, as desired.

It will be seen that with the out-sole securely cemented to the mid-sole and the inturned portion of the welt, with the latter having a substantial portion cemented to the upper above the line of securement between the insole linings 3 and quarteroftheshoe,thebootwillbeei!ec tively waterprooied.

I have disclosed my invention with particularity in the .best form known to me, but it will, nevertheless, be understood that this is exemplary, and that modifications in the construction, arrangement and combinations of parts, substitution of materials, structural and otherwise, may` be made without departing from the spirit of the invention, within the scope of the appended claim.

I claim:

A footwear of the character described comprising a eeced lining therewithin, the edges of the lining and upper being ilush, an insole being arranged transversely of the lower edges of the upper and lining and being ilush therewith and secured thereto, a mid-sole of heat insulating material adhesively secured uponthe outer surface oi' said insole, a crepe rubber welt adhesively secured to the upper at a point a substantial distance above the line of securement between the upper, lining and insole, said welt having a sub- REFERENCES CITED The following references are oi record in the file oi this patent:

UNITED STATES PATENTS Number Name Date 989,572 Dash Apr. 18, 1911 1,212,834 Stall Jan. 16, 1917 1,667,629 Friedman Apr. 24, 1928 1,735,986 Wray Nov. 19, 1929 1,937,074 Vincente Nov. 28, 1933 2,365,103 Olson Dec. 12, 1944 2,394,433 Earl Feb. 5, 1948