US52280A - Improved shank-laster - Google Patents
Improved shank-laster Download PDFInfo
- Publication number
- US52280A US52280A US52280DA US52280A US 52280 A US52280 A US 52280A US 52280D A US52280D A US 52280DA US 52280 A US52280 A US 52280A
- Authority
- US
- United States
- Prior art keywords
- laster
- shank
- points
- improved shank
- piece
- Prior art date
- 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
Links
- 210000001847 Jaw Anatomy 0.000 description 6
- 210000001699 lower leg Anatomy 0.000 description 4
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D19/00—Hand lasting; Lasting pincers
Definitions
- a A are two jaws pivoted at a to in slots in the cross-piece B.
- the upper ends of these jaws are also pivoted at b b tothe ends oftoggle-levers C C, which, in turn, are pivoted at c c to the parallel piece D.
- the lower ends of the arms orjaws A A are provided with points el cl d, and upon the inner sides of each lever A is fastened a long spring, G, provided with points e e c, which point toward the points on its respective lever, A.
- the springs are fastened atf, and each has a thumb-piece, H, by which they can be easily operated.
- the operation of the laster is as follows: The upper is placed upon the last, which is then turned'over, and the upper is then drawn up about the shank, and the edges thereof' placed between points of springs G G and those on the ends oflevers A A. The operator now turns the screw-shaft E so as to cause levers A A to approach each other, as shown in red lines, Fig. l, thereby drawing the edges ot' the upper on the shank of the last in a convenient manner for fastening preparatory to applying the outer sole.
- This laster can be applied in a very expeditious manner, and is easily and quickly operated.
- the long springs G G in combination with the points of levers A A, form a very effective means ot holding the edges ofthe upper, much superior in many respects to jaws operated by a screw.
- the springs G G can be operated independently of each other, and can therefore be adjusted with great ease and rapidity to suit the work in hand.
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- Orthopedics, Nursing, And Contraception (AREA)
Description
Uwrrnn rares PATENT Clinica.
WARD N. FLAGG, OF BOYLSTON, MASSACHUSETTS.
IMPRovED sHANK-LAsTl-:a
Specification forming part of Letters Patent No. 52,2S0, dated January 30, 1866.
To all whom t may concern:
Be it known that I, WARD N. FLAGG, of Boylston, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Shank-Lasters; and l do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure l represents a front view' of my improved shank-laster, and Fig. 2 represents a longitudinal central section on line A B, Fig. l, looking' in the direction of the arrow.
InI the drawings, A A are two jaws pivoted at a to in slots in the cross-piece B. The upper ends of these jaws are also pivoted at b b tothe ends oftoggle-levers C C, which, in turn, are pivoted at c c to the parallel piece D.
A screw-shaft, E, having a handle, F, passes down through the pieces B and D. The screwthread on the upper part of shaft E, which passes through D, is cut in a different direction to the thread which passes through the piece B, so that when the shaft E is turned so as to withdraw the lsaine from the piece B it at the same time causes the parallel piece D to rise with the combined velocity of both screw-threads, causing the lower ends ofjaws or levers A A to approach each other, as indicated in red lines, Fig. l.
The lower ends of the arms orjaws A A are provided with points el cl d, and upon the inner sides of each lever A is fastened a long spring, G, provided with points e e c, which point toward the points on its respective lever, A. The springs are fastened atf, and each has a thumb-piece, H, by which they can be easily operated.
The operation of the laster is as follows: The upper is placed upon the last, which is then turned'over, and the upper is then drawn up about the shank, and the edges thereof' placed between points of springs G G and those on the ends oflevers A A. The operator now turns the screw-shaft E so as to cause levers A A to approach each other, as shown in red lines, Fig. l, thereby drawing the edges ot' the upper on the shank of the last in a convenient manner for fastening preparatory to applying the outer sole.
This laster can be applied in a very expeditious manner, and is easily and quickly operated.
The long springs G G, in combination with the points of levers A A, form a very effective means ot holding the edges ofthe upper, much superior in many respects to jaws operated by a screw. The springs G G can be operated independently of each other, and can therefore be adjusted with great ease and rapidity to suit the work in hand.
Having described my improved shank-laster, what I claim therein as new and of my invention, and desire to secure by Letters Patent, 1s-
The combination, with the levers A A, operated as described and having points d d d at their lower ends, of the long springs G G, provided with points e e c, and thumb-pieces H H, as and for the purposes described.
WARD N. FLAGG.
Witnesses:
H. L. FULLER, THos. H. DODGE.
Publications (1)
Publication Number | Publication Date |
---|---|
US52280A true US52280A (en) | 1866-01-30 |
Family
ID=2121826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US52280D Expired - Lifetime US52280A (en) | Improved shank-laster |
Country Status (1)
Country | Link |
---|---|
US (1) | US52280A (en) |
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0
- US US52280D patent/US52280A/en not_active Expired - Lifetime
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