1 |
Method for stiffening shoe insoles |
US194376 |
1980-10-06 |
US4361921A |
1982-12-07 |
Leo F. Stanton |
A method and apparatus for forming a shoe stiffener directly on a selected surface of a shoe assembly (such as a shoe shank on the bottom of an insole) from a strip of initially flexible, uncured thermosetting material encased in a sleeve. The apparatus supports a shoe assembly, bottom up, to expose the insole bottom to a radiant heater. Means are provided for automatically locating a strip of the shank material on the insole bottom and for raising the shoe assembly, together with the insole strip, into engagement with a means for urging the shank strip against and into conformity with the contour of the insole bottom. A radiant heater then is operated to activate the shank strip. The ball and heel ends of the shank strip are pressed firmly toward the insole by heat absorbing presser pads which cause the ends of the shank strip to be tapered and to promote secure bonding of the ends of the shank strip to the insole bottom. |
2 |
Technique and articles for forming shoe shanks |
US842242 |
1977-10-14 |
US4236268A |
1980-12-02 |
Robert W. Bradley; Donald L. Bray; Raymond L. Peterson |
A strip which will form a rigid shoe shank is applied to the bottom of an insole. The shank strip is flexible and includes a carrier sleeve which contains a plurality of fiberglass strands in a thermosetting plastic matrix. After the shank strip is in place, the matrix is activated by exposing it to an external stimulus such as heat or radiation. Heat can be applied locally to the shank strip and curing takes place directly on the insole bottom. The thermosetting resin can polymerize with or without an exothermic reaction. Preferably, sufficient heat is developed from exothermic heat or from the energy source and directed to melt the carrier sleeve to fuse it with the resin and to effect a bond to the insole for forming a unitary and rigid shank attached firmly to the insole bottom. The shank strip may be cut from a "rope" which may be wound onto a reel for storage and to facilitate continuous paying out of the rope to enable a shank length to be severed and applied to the insole bottom. |
3 |
Apparatus for stiffening shoe insoles |
US968830 |
1978-12-12 |
US4287628A |
1981-09-08 |
Leo F. Stanton |
A method and apparatus for forming a shoe stiffener directly on a selected surface of a shoe assembly (such as a shoe shank on the bottom of an insole) from a strip of initially flexible, uncured thermosetting material encased in a sleeve. The apparatus supports a shoe assembly, bottom up, to expose the insole bottom to a radiant heater. Means are provided for automatically locating a strip of the shank material on the insole bottom and for raising the shoe assembly, together with the insole strip, into engagement with a means for urging the shank strip against and into conformity with the contour of the insole bottom. A radiant heater then is operated to activate the shank strip. The ball and heel ends of the shank strip are pressed firmly toward the insole by heat absorbing presser pads which cause the ends of the shank strip to be tapered and to promote secure bonding of the ends of the shank strip to the insole bottom. |
4 |
Method and apparatus for stiffening shoe insoles |
US838670 |
1977-10-03 |
US4161048A |
1979-07-17 |
Leo F. Stanton |
A method and apparatus for forming a shoe shank directly on the bottom of a shoe insole from a strip of initially flexible, uncured thermosetting material encased in a sleeve. The machine includes a shoe jack for supporting the shoe assembly, bottom up, to expose the insole bottom to a radiant heater. Means are provided for automatically locating and placing a strip of shank material on the insole bottom and for raising the shoe assembly, together with the insole strip into engagement with a means for urging the shank strip against and into conformity with the contour of the insole bottom while the radiant heater is operated to activate the shank strip. |
5 |
Method of and device for reinforcing middle bottom of shoes |
JP1134778 |
1978-02-03 |
JPS5397541A |
1978-08-25 |
REO FURANSHISU SUTANTON |
|
6 |
Molded shanks |
US468200 |
1983-02-22 |
US4461101A |
1984-07-24 |
Steven M. LeBaron |
A spring-type shank for a shoe sole is formed on the bottom of a shoe assembly during manufacture of the shoe. The heel end of the shank is formed so that it is raised slightly from the heel seat region of the insole to provide a "spring shank". The shank is formed directly on the bottom of the shoe insole from a strip of initially flexible, uncured thermosetting material which may be fiber reinforced. The spring portion at the heel end of the shank is formed by placing a wedge between the shoe insole and the heel end of the shank strip during the curing process thereby to cause the heel end of the shank strip to cure in a raised, inclined attitude, spaced from the bottom of the insole, while the more forward, remaining portions of the shank strip cure in secure attachment to the insole bottom. |
7 |
Molded shanks |
US339784 |
1982-01-15 |
US4392266A |
1983-07-12 |
Steven M. LeBaron |
A spring-type shank for a shoe sole is formed on the bottom of a shoe assembly during manufacture of the shoe. The heel end of the shank is formed so that it is raised slightly from the heel seat region of the insole to provide a "spring shank". The shank is formed directly on the bottom of the shoe insole from a strip of initially flexible, uncured thermosetting material which may be fiber reinforced. The spring portion at the heel end of the shank is formed by placing a wedge between the shoe insole and the heel end of the shank strip during the curing process thereby to cause the heel end of the shank strip to cure in a raised, inclined attitude, spaced from the bottom of the insole, while the more forward, remaining portions of the shank strip cure in secure attachment to the insole bottom. |
8 |
Apparatus for stiffening shoe insoles |
US765095 |
1977-02-03 |
US4122573A |
1978-10-31 |
Leo F. Stanton |
An apparatus for forming a shoe shank directly on the bottom of a shoe insole from a strip of initially flexible, uncured thermosetting material includes a radiant heater and resilient means for engaging the shank strip to orient, retain and resiliently urge the shank strip against the insole bottom while the radiant heater activates the shank strip. |
9 |
Manufacture of shoe bottom units |
US22897938 |
1938-09-08 |
US2173968A |
1939-09-26 |
KING HARRY C |
|