US1613401A - Shoe-shank stiffener - Google Patents

Shoe-shank stiffener Download PDF

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Publication number
US1613401A
US1613401A US521978A US52197821A US1613401A US 1613401 A US1613401 A US 1613401A US 521978 A US521978 A US 521978A US 52197821 A US52197821 A US 52197821A US 1613401 A US1613401 A US 1613401A
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United States
Prior art keywords
stiffener
shank
shoe
portions
shank stiffener
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US521978A
Inventor
James F Marshall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
J J GROVER S SONS Co
Jj Grover's Sons Co
Original Assignee
J J GROVER S SONS Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by J J GROVER S SONS Co filed Critical J J GROVER S SONS Co
Priority to US521978A priority Critical patent/US1613401A/en
Application granted granted Critical
Publication of US1613401A publication Critical patent/US1613401A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/22—Supports for the shank or arch of the uppers

Definitions

  • the bottom of the last to which the insole of a shoe is conformed during the lasting operation has a substantially flat heel portion, and ashank portion of a winding form.
  • the shank .portion is transversely inclined between the heel portion and the fore portion, the transverse inclination merging into the substantially flat or relatively horizontal heel portion, and gradually increasin so that the shank portion has its greatest transverse inclination at its forward extremity.
  • the object of the invention is to provide a shank stiffener which, when attached as usual to an insole, is adapted to conform aocurately to the winding portion of a last bottom, and facilitate the conformation of the shank portion of the insole, to the cone sponding portion of the last bottom.
  • the invention is embodied in the improved shank stiffener hereinafter described and claimed.
  • Figure 1 is a face View of my improved shank stiffener.
  • Figure 2 is an edge view.
  • Figure 3 is an end view.
  • Figure 4 is a section on line 44; of F igure 1.
  • the stiffener designated as a whole by the reference numeral 12 is made of sheet 33 metal, preferably tempered steel, and is shaped to conform to the heel portion and the longitudinally curved shank portion of a last bottom.
  • the faces of the stiffener have substantially flat portions l3, 13, ex-
  • transversely inclined portions l t, 14, merging into the portions 13, and extending to the forward end of the stiffener.
  • the transverse inclination of the portions 14 gradually increases, or becomes gradually greater from the fiat portions 13 to the forward end,
  • the major face portions of the stiffener are winding or twisted, and are higher at the inner longitudinal edge than at the outer edge, when the flat portions 13 are horizontal, as indicated by Figures 2 and 3.
  • the major side portions of the stiffener are adapted to conform to the winding shank portion of a last bottom, and to facilitate a like conformation of the shank portion of an insole to which the stiffener is attached, so that by the usual lastlng operation, the shank portion of the insole may be accurately conformed to the winding shank portion of the last bottom.
  • the upper face of the stiffener preferably has a slight reentrant longitudinal curvature 15, at its forward end portion.
  • the faces of the improved stiffener are of what may be termed a warped form, and that the face edges of any transverse section will be substantially straight lines. This structural difference distinguishes the fastener from generally similar shoe shank stiffening devices that have been heretofore proposed in which certain transverse sections present curved lines.
  • a shoe shank stiffener comprising an elongated piece of metal, longitudinally curved to conform to the bottom of a last and having parallel faces each provided at one end with a flat portion conforming to the heel seat of the last bottom and, in advance of said flat portion, with a transversely inclined por tion, the inclination of which increases gradually toward the forward end of the stiff ener, conforming to the winding portion of the bottom face of a last, the face edges of every transverse section of the fastener being substantially straight lines.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

Jan. 4 1927. 1,613,401
J. F. MARSHALL SHOE SHANK STIFFENER' Filed Dec. 15, 1921' INVENTBH AT"? DHNEYE Patented Jan. 4, 1927.
UNITED STATES PATENT OFFICE.
JAMES F. MARSHALL, F SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR TO J. J. GROVERS SONS COMPANY, OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.
SHOE-SHANK STIFFENER.
Application filed December 13, 1921.
In many cases the bottom of the last to which the insole of a shoe is conformed during the lasting operation, has a substantially flat heel portion, and ashank portion of a winding form. In other words, the shank .portion is transversely inclined between the heel portion and the fore portion, the transverse inclination merging into the substantially flat or relatively horizontal heel portion, and gradually increasin so that the shank portion has its greatest transverse inclination at its forward extremity.
The object of the invention is to provide a shank stiffener which, when attached as usual to an insole, is adapted to conform aocurately to the winding portion of a last bottom, and facilitate the conformation of the shank portion of the insole, to the cone sponding portion of the last bottom.
The invention is embodied in the improved shank stiffener hereinafter described and claimed.
Of the accompanying drawings forming a part of this specification,-
Figure 1 is a face View of my improved shank stiffener.
Figure 2 is an edge view.
Figure 3 is an end view.
Figure 4 is a section on line 44; of F igure 1.
The same reference characters indicate the same parts in all of the figures.
The stiffener designated as a whole by the reference numeral 12, is made of sheet 33 metal, preferably tempered steel, and is shaped to conform to the heel portion and the longitudinally curved shank portion of a last bottom. The faces of the stiffener have substantially flat portions l3, 13, ex-
-1 tending from the heel end through a minor portion of the length of the stiffener, and transversely inclined portions l t, 14, merging into the portions 13, and extending to the forward end of the stiffener. The transverse inclination of the portions 14 gradually increases, or becomes gradually greater from the fiat portions 13 to the forward end,
Serial No. 521,978.
so that the major face portions of the stiffener are winding or twisted, and are higher at the inner longitudinal edge than at the outer edge, when the flat portions 13 are horizontal, as indicated by Figures 2 and 3. It will now be seen that the major side portions of the stiffener are adapted to conform to the winding shank portion of a last bottom, and to facilitate a like conformation of the shank portion of an insole to which the stiffener is attached, so that by the usual lastlng operation, the shank portion of the insole may be accurately conformed to the winding shank portion of the last bottom.
The upper face of the stiffener preferably has a slight reentrant longitudinal curvature 15, at its forward end portion.
The
usual holes 16 may be provided to receive fasteners securing the stiffener to an insole.
From the drawing it will be seen that the faces of the improved stiffener are of what may be termed a warped form, and that the face edges of any transverse section will be substantially straight lines. This structural difference distinguishes the fastener from generally similar shoe shank stiffening devices that have been heretofore proposed in which certain transverse sections present curved lines. I claim A shoe shank stiffener comprising an elongated piece of metal, longitudinally curved to conform to the bottom of a last and having parallel faces each provided at one end with a flat portion conforming to the heel seat of the last bottom and, in advance of said flat portion, with a transversely inclined por tion, the inclination of which increases gradually toward the forward end of the stiff ener, conforming to the winding portion of the bottom face of a last, the face edges of every transverse section of the fastener being substantially straight lines.
In testimony whereof I have affixed my signature.
JAMES F. MARSHALL.
US521978A 1921-12-13 1921-12-13 Shoe-shank stiffener Expired - Lifetime US1613401A (en)

Priority Applications (1)

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US521978A US1613401A (en) 1921-12-13 1921-12-13 Shoe-shank stiffener

Applications Claiming Priority (1)

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US521978A US1613401A (en) 1921-12-13 1921-12-13 Shoe-shank stiffener

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103075A (en) * 1961-07-06 1963-09-10 Albert F Paulding Stiffener support for shoe soles
WO2015095839A1 (en) * 2013-12-19 2015-06-25 Sthira, Inc. High heel shank and high-heeled shoes using same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103075A (en) * 1961-07-06 1963-09-10 Albert F Paulding Stiffener support for shoe soles
WO2015095839A1 (en) * 2013-12-19 2015-06-25 Sthira, Inc. High heel shank and high-heeled shoes using same

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