US551389A - Stitching-jack - Google Patents
Stitching-jack Download PDFInfo
- Publication number
- US551389A US551389A US551389DA US551389A US 551389 A US551389 A US 551389A US 551389D A US551389D A US 551389DA US 551389 A US551389 A US 551389A
- Authority
- US
- United States
- Prior art keywords
- stitching
- jack
- secured
- jaw
- jaws
- 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 24
- 241000256844 Apis mellifera Species 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000087 stabilizing Effects 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B1/00—Manufacture of leather; Machines or devices therefor
- C14B1/26—Leather tensioning or stretching frames; Stretching-machines; Setting-out boards; Pasting boards
Definitions
- My invention relates to an improved leatherworkers stitching-jack; and it has for its object the production of a stitching-jack well adapted for farmers use, and for use in livery stables and in other like places, it being capable of being placed upon a chair, box, bench, or other like article, and operated by means of a hand-lever, in contradistinction to stitching-jacks of the class inseparably connected with a heavy horse and operated by means of a foot-lever.
- Figure l of the drawings is a perspective view of a stitching-jack constructed in accordance with my invention.
- Fig. 2 is a side elevation of the same.
- A represents the base of the jack, which consists of a piece of plank capable of being screwed or otherwise secured to a chair, box, or other like support.
- the clamp-block B To the base, near one edge thereof, is secured in any suitable manner, preferably by mortising, the clamp-block B, from the upper edge of which rises the stationary clampingjaw O of the clamp, this jaw C and block B being preferably formed integral.
- E is a coiled spring secured between the jaws G and D, serving to normally hold the clamping-jaws apart.
- F is an operating-strap, secured at one end to the inner side of the movable jaw D, passing through the coiled spring E, and through an opening f in the jaw 0, its other end being secured to a handlever Gpivoted on a bar 9 secured to the clamp-block E.
- this bracket II represents a bracing-bracket, secured at one end to the base A, projected vertically a short distance and then turned inward at a right angle and secured at the end to the stationary jaw O of the clamp.
- this bracket On the inner side of the vertical portion this bracketis provided with ratchet-teeth h, with which a plate g, secured on lever G, is adapted to engage in operation.
- a base capable of being screwed or otherwise secured to a chair, table, or other like support
- a clamp-block secured in said base and having a stationary clamping-j aw formed integral therewith, a movable clamping-jaw hinged to the clamp-block, a bracing-bracket secured at one en d to the base and at the other end to the stationary clamping-j aw
- said bracket being provided on its inner side with toothed pro j ections
- a hand-lever pivotally secured at one end to the clampblock and having a projecting plate adapted to engage the teeth on the bracket inoperation, and an operating-strap connecting the movable clamping-jaw and said hand-lever, substantially as described.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
(No Model) A. R. KNADLER. STITGHING JACK.
No. 551,389. Patented Bee. 1'], 1895.
Witnesses:
Attorney.
INDIE SGHAIIMJHDYO'UTND WASHINGTDNJIC.
UNITED STATES- PATENT OFFICE.
ALVIN R. KNADLER, OF PERU, INDIANA.
STITCHING-JACK.
SPECIFICATION forming part of Letters Patent No. 551,389, dated December 1'7, 1895.
Application filed May 21, 1895. Serial No. 550,030. No model) To all whom it may concern:
Be it known that I, ALVIN R. KNADLER, a citizen of the United States, residing at Peru, in the county of Miami and State of Indiana, have invented a new and useful Stitching- Jack, of which the following is a specification.
My invention relates to an improved leatherworkers stitching-jack; and it has for its object the production of a stitching-jack well adapted for farmers use, and for use in livery stables and in other like places, it being capable of being placed upon a chair, box, bench, or other like article, and operated by means of a hand-lever, in contradistinction to stitching-jacks of the class inseparably connected with a heavy horse and operated by means of a foot-lever.
The invention will first be described in connection with the accompanying drawings, and then pointed out in the claim.
Figure l of the drawings isa perspective view of a stitching-jack constructed in accordance with my invention. Fig. 2 is a side elevation of the same.
Referring to the drawings, A represents the base of the jack, which consists of a piece of plank capable of being screwed or otherwise secured to a chair, box, or other like support. To the base, near one edge thereof, is secured in any suitable manner, preferably by mortising, the clamp-block B, from the upper edge of which rises the stationary clampingjaw O of the clamp, this jaw C and block B being preferably formed integral. To the edge of the block B, opposite the jaw C, is hinged, as at d, the movable clamping-jaw D, the upper ends of the jaws O and D being turned inward, as at c, to form the clampingface, as is usual in clamps of this kind. E is a coiled spring secured between the jaws G and D, serving to normally hold the clamping-jaws apart.
F is an operating-strap, secured at one end to the inner side of the movable jaw D, passing through the coiled spring E, and through an opening f in the jaw 0, its other end being secured to a handlever Gpivoted on a bar 9 secured to the clamp-block E.
II represents a bracing-bracket, secured at one end to the base A, projected vertically a short distance and then turned inward at a right angle and secured at the end to the stationary jaw O of the clamp. On the inner side of the vertical portion this bracketis provided with ratchet-teeth h, with which a plate g, secured on lever G, is adapted to engage in operation.
The operation of my stitching-j ack is as follows: The material to be worked is placed between the clamping-surfaces c of the jaws C and D, and the operator, pressing with his hand upon the lever G, brings the jaws tightly together, and causes the plate 9 to engage one of the teeth h, thus causing the jaws to tightly clamp the material, no further action on his part being necessary to hold the clamping-jaws together. IVhen it is desired to release the material, by simply disengaging the plate on the lever from the ratchet-teeth permits the spring E to act, causing the jaws to open, which releases the material.
It is evident from the above description that I am enabled to construct my stitchingjack very light and portable, permitting me to dispense with the usual heavy horse or bench,and that the bracket H is so constructed and positioned as to serve not only as a ratchetbar for the lever, but as a very effective brace for the stationary jaw O, by which I am enabled to construct the parts much lighter than has been heretofore possible and yet maintain the requisite amount of strength necessary in jacks of this class.
' Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
In a stitching-jack, a base capable of being screwed or otherwise secured to a chair, table, or other like support, a clamp-block secured in said base and having a stationary clamping-j aw formed integral therewith, a movable clamping-jaw hinged to the clamp-block, a bracing-bracket secured at one en d to the base and at the other end to the stationary clamping-j aw, said bracket being provided on its inner side with toothed pro j ections,a hand-lever pivotally secured at one end to the clampblock and having a projecting plate adapted to engage the teeth on the bracket inoperation, and an operating-strap connecting the movable clamping-jaw and said hand-lever, substantially as described.
In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.
ALVIN R. KNADLER. Witnesses A. GEHRING, ELI J. JAMisoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US551389A true US551389A (en) | 1895-12-17 |
Family
ID=2620131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US551389D Expired - Lifetime US551389A (en) | Stitching-jack |
Country Status (1)
Country | Link |
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US (1) | US551389A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2638805A (en) * | 1952-06-02 | 1953-05-19 | Benjamin E Bigelow | Lap vise and bench |
-
0
- US US551389D patent/US551389A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2638805A (en) * | 1952-06-02 | 1953-05-19 | Benjamin E Bigelow | Lap vise and bench |
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