US205006A - Improvement in bracket-saw frames - Google Patents
Improvement in bracket-saw frames Download PDFInfo
- Publication number
- US205006A US205006A US205006DA US205006A US 205006 A US205006 A US 205006A US 205006D A US205006D A US 205006DA US 205006 A US205006 A US 205006A
- Authority
- US
- United States
- Prior art keywords
- saw
- bracket
- handle
- clamp
- bow
- 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
- 239000002184 metal Substances 0.000 description 8
- 210000001699 lower leg Anatomy 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/08—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
- B23D51/12—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for use with tools, dealt with in this subclass, which are connected to a carrier at both ends, e.g. bows adjustable in length or height
- B23D51/14—Attachment of the tool
Definitions
- This invention relates to bracket-saw frames; and consists in a bracket-saw the handle and bow of which are of metal, the handle and its attached saw-clainpin g ear being cast orformed in one single piece, as hereinafter described, whereby the frame is made lighter, its construction is simplified, and its cost reduced.
- Figure 1 represents, in side elevation, a bracket-saw frame constructed in accordance with our invention
- Fig. 2 a section 011 the line at m, Fig. 1
- Fig. 3 a section on the line y y.
- the bow a is made of metal, and is of any desired length, shape, and height. At its upper end is a clamp, 11, which is fitted over a screwthreaded stud, c, and a pin, d and upon 0 is placed a thumb-nut, 0, so that the upper end of the saw f, placed between the clamp and bow, may be held firmly.
- the lower end of the bow is provided with a screw-threaded stud, g, and a pin, h.
- the handle as shown, is composed of a narrow rim, 1', having the saw-clam pin g ear cast in one piece with it.
- the pattern and shape of that portion of the cast-metal handle to be grasped by the hand may be variously modified; but it will preferably be cast with openings or spaces 3 4, to reduce the weight of the handle.
- the opening 3 possesses much utility, for it forms a space for the reception of the lower end of the saw f, (see Fig. 3,) permitting it to be extended down into the handle without i11- convenience to the user of the saw, thereby obviating the necessity of breaking ofi the saw near the clamp, as is now commonly done.
- the pin h enters an opening in the clamp j.
- the lower end of the saw, placed between the clamp j and. the lower end of the bow, is held firmly in position by the thumb-nut it placed on g.
- the handle and clamp are also provided with an offset, 1, (see Fig. 3,) to fit under the end of the bow at.
- the open cast handle may have its sides filled in with thin pieces of wood or other material to ornament or thicken it.
- WVe form the studs or pins to hold the handle and clamp in position by driving a punch halfway through the ends of the bow, which leaves the stud or pin formed on the other side from the same material, thereby obviating the putting in of separate pins, which much cheapens the manufacturing.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adornments (AREA)
Description
0. SPRING 8: J. T. ROBINSQN.
Bracket SaW Prame.
Patented June 18, 1878.
Wikqes 5 E5.
UNITED STATES PATENT OFFICE.
CHARLES SPRING AND JOHN T. ROBINSON, OF HYDE PARK, MASSACHUSETTS.
IMPROVEMENT IN BRACKET-SAW FRAMES.
Specification forming part of Letters Patent No. 205,006, dated une 18, 1878; application filed May 17 187 8.
'which the following is a specification:
This invention relates to bracket-saw frames; and consists in a bracket-saw the handle and bow of which are of metal, the handle and its attached saw-clainpin g ear being cast orformed in one single piece, as hereinafter described, whereby the frame is made lighter, its construction is simplified, and its cost reduced.
Figure 1 represents, in side elevation, a bracket-saw frame constructed in accordance with our invention; Fig. 2, a section 011 the line at m, Fig. 1; and Fig. 3, a section on the line y y.
The bow a is made of metal, and is of any desired length, shape, and height. At its upper end is a clamp, 11, which is fitted over a screwthreaded stud, c, and a pin, d and upon 0 is placed a thumb-nut, 0, so that the upper end of the saw f, placed between the clamp and bow, may be held firmly. The lower end of the bow is provided with a screw-threaded stud, g, and a pin, h. The handle, as shown, is composed of a narrow rim, 1', having the saw-clam pin g ear cast in one piece with it.
The pattern and shape of that portion of the cast-metal handle to be grasped by the hand may be variously modified; but it will preferably be cast with openings or spaces 3 4, to reduce the weight of the handle.
The opening 3 possesses much utility, for it forms a space for the reception of the lower end of the saw f, (see Fig. 3,) permitting it to be extended down into the handle without i11- convenience to the user of the saw, thereby obviating the necessity of breaking ofi the saw near the clamp, as is now commonly done. The pin h enters an opening in the clamp j.
The lower end of the saw,,placed between the clamp j and. the lower end of the bow, is held firmly in position by the thumb-nut it placed on g. The handle and clamp are also provided with an offset, 1, (see Fig. 3,) to fit under the end of the bow at.
Heretofore it has been customary to provide the clamp with a screw-threaded shank, to enter a wooden handle provided with a ferrule and bored to receive the shank.
With this our metal handle and clamp cast in one piece, the frame is more cheaply made,
and it is much lighter and more convenient to manufacture.
It is obvious that the open cast handle may have its sides filled in with thin pieces of wood or other material to ornament or thicken it.
WVe form the studs or pins to hold the handle and clamp in position by driving a punch halfway through the ends of the bow, which leaves the stud or pin formed on the other side from the same material, thereby obviating the putting in of separate pins, which much cheapens the manufacturing.
We claim- 1. Asaw-bowhavingpinsandscrew-threaded studs, in combination with clamps having recessesfor the reception of the pins and openings through which the studs pass, and with clamping-nuts, substantially as described.
2. A saw-handle, a clamp formed therewith, and the saw-bow, in combination with a screw extending through said bow and clamp, and a clamping-nut, substantially as described.
In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.
CHARLES SPRING. JOHN T. ROBINSON. Witnesses:
G. W. GREGORY, W. T. PRATT. I
Publications (1)
Publication Number | Publication Date |
---|---|
US205006A true US205006A (en) | 1878-06-18 |
Family
ID=2274410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US205006D Expired - Lifetime US205006A (en) | Improvement in bracket-saw frames |
Country Status (1)
Country | Link |
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US (1) | US205006A (en) |
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0
- US US205006D patent/US205006A/en not_active Expired - Lifetime
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