US236430A - Lasting-tool - Google Patents
Lasting-tool Download PDFInfo
- Publication number
- US236430A US236430A US236430DA US236430A US 236430 A US236430 A US 236430A US 236430D A US236430D A US 236430DA US 236430 A US236430 A US 236430A
- Authority
- US
- United States
- Prior art keywords
- tool
- fulcrum
- lasting
- arm
- shank
- 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
- 210000001699 lower leg Anatomy 0.000 description 16
- 210000001847 Jaw Anatomy 0.000 description 8
- 230000002045 lasting Effects 0.000 description 2
- 210000004874 lower jaw Anatomy 0.000 description 2
- 210000004873 upper jaw Anatomy 0.000 description 2
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
- My invention relates to an improvement in lasting-tools having a movable fulcrum; and it consists in the combination, with the usual form of pinchers constituting the lasting-tool, of an adjustable rocking fulcrum, having a curved healing-surface which is caused to bear on the side of the boot or shoe to be lasted in such a manner as to enable the edge of the upper to be griped and drawn over the inner sole without raising the edge of the upper.
- FIG. 1 is a side View of an implement embodying my invention.
- Fig. 2 is a section of the sameon the line :10 so.
- A is the upper shank, of which the lower jaw forms a part; and B is the lower shank, carrying the upper jaw, e is a flange or rib on the under part of shank B, to which is pivoted, at a, a fulcrum-arm, C, having an extension, b, at the rear of the pivot, which bears against a shoulder on shank B to prevent the arm C from dropping lower than is necessary.
- a At the outer or forward end of the arm C is a curved surface or bearing-face, a, forming the arc of a circle the radius of which is central at the pivot a.
- the fulcrum-arm C may be adjusted toward 5 or from the jaws of the tool by setting the (No model.)
- the face cof the fulcrum being properly adjusted to its position, the jaws gripe the edge of the upper, and the com- 40 bined action of the curved edge 0 and pivoted fulcrum-arm serves to draw the edge nearly in close contact to or parallel with the bottom of the last without lifting up the edge of the upper, as in the use of the ordinary fixed fulcrum.
- the fulcrum-arm with its curved face, acts also as a toggle-joint to increase the purchase of the tool.
- the shanks or handles (10 not require to be griped by the hand, as the simple pressure upon the upper shank serves to hold the jaws pressed together upon the edge of the upper.
- WVith my improvement a shoe can be lasted much more easily, in less time,and with much better result than with the ordinary tool having a fixed fulcrum.
- the adjustable fulcrum arm C provided with the curved face 0 and pivoted to the shank B, as shown, in combination with the shanks A and B and their respective jaws, substantially as set forth.
Description
(No Model.)
0. M. HAYDEN. Lasting T001.
No. 36,4 0- Patented Ja'n. 1 1,1 881.
TOLITHOGRAPHER. WASHINGTON D C Nrre STATES CHARLES M. HAYDEN, OF BRIDGEWATER, ASSIGNOR TO FRANCIS T. CRAFTS, OF ABINGTON, MASSACHUSETTS.
LASTI NG-TOOL.
SPECIFICATION forming part of Letters Patent No. 236,430, dated January 11, 1881.
Application filed October 15, 1880.
To all whom, it may concern:
Be it known that 1, CHARLES M. HAYDEN, of Bridgewater, in the county of Plymouth and State of lvlassachusetts, have invented a new and useful Improvement in Shank-Lasters, of which the following is a specification.
My invention relates to an improvement in lasting-tools having a movable fulcrum; and it consists in the combination, with the usual form of pinchers constituting the lasting-tool, of an adjustable rocking fulcrum, having a curved healing-surface which is caused to bear on the side of the boot or shoe to be lasted in such a manner as to enable the edge of the upper to be griped and drawn over the inner sole without raising the edge of the upper.
My invention is illustrated in the accompanying drawings, in which Figure 1 is a side View of an implement embodying my invention. Fig. 2 is a section of the sameon the line :10 so.
A is the upper shank, of which the lower jaw forms a part; and B is the lower shank, carrying the upper jaw, e is a flange or rib on the under part of shank B, to which is pivoted, at a, a fulcrum-arm, C, having an extension, b, at the rear of the pivot, which bears against a shoulder on shank B to prevent the arm C from dropping lower than is necessary.
0 At the outer or forward end of the arm C is a curved surface or bearing-face, a, forming the arc of a circle the radius of which is central at the pivot a.
The fulcrum-arm C may be adjusted toward 5 or from the jaws of the tool by setting the (No model.)
pivot a in the separate holes a in the flange c, as required.
When in operation, the face cof the fulcrum being properly adjusted to its position, the jaws gripe the edge of the upper, and the com- 40 bined action of the curved edge 0 and pivoted fulcrum-arm serves to draw the edge nearly in close contact to or parallel with the bottom of the last without lifting up the edge of the upper, as in the use of the ordinary fixed fulcrum. The fulcrum-arm, with its curved face, acts also as a toggle-joint to increase the purchase of the tool. The shanks or handles (10 not require to be griped by the hand, as the simple pressure upon the upper shank serves to hold the jaws pressed together upon the edge of the upper.
WVith my improvement a shoe can be lasted much more easily, in less time,and with much better result than with the ordinary tool having a fixed fulcrum.
That 1 claim as my invention, and desire to secure by Letters Patent, is-
The adjustable fulcrum arm C, provided with the curved face 0 and pivoted to the shank B, as shown, in combination with the shanks A and B and their respective jaws, substantially as set forth.
In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.
CHARLES M. HAYDEN.
\Vitnesses J 0s. H. ADAMS, F. T. CRAFTS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US236430A true US236430A (en) | 1881-01-11 |
Family
ID=2305790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US236430D Expired - Lifetime US236430A (en) | Lasting-tool |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US236430A (en) |
-
0
- US US236430D patent/US236430A/en not_active Expired - Lifetime
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