US115500A - Improvement in saw-frames - Google Patents
Improvement in saw-frames Download PDFInfo
- Publication number
- US115500A US115500A US115500DA US115500A US 115500 A US115500 A US 115500A US 115500D A US115500D A US 115500DA US 115500 A US115500 A US 115500A
- Authority
- US
- United States
- Prior art keywords
- saw
- frames
- improvement
- stretchers
- henry
- 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
- 230000035939 shock Effects 0.000 description 4
- 241000763859 Dyckia brevifolia Species 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000717 retained Effects 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
- B23D51/125—Blade tensioning means
Definitions
- a and 13 represent the side pieces of the frameof a buck or other saw
- E E. represent stretchers, which extend from the sidepieces A B, and, in the pres entcase, consist of two arches, the crowns of which faceeach other. I Between these crowns I arrange acurved or other spring, F, the central portion being secured to a pin, G, on the bearing-plate H,against which rest the upper stretchers,the pinpassing through the latter,
- J represents the other bearin g-plate, which rests on M the lower stretcher; and against which bear the ends of thespringF.
- a pin, K is fixed in the lower stretcher and passes through the plate J, which, by means of flanges formed upon it, is retained in placeand prevented from moving laterally.
- stretchers have been ap plied to saw-frames, and I am also aware that such stretchers consist of two arches having theircenters or crowns arranged to face each other. Itherefore do not claim such parts;
Description
HENRY s. NHLLER. I Improvement in Saw-Frames.
Patented May 30,1371.
HENRY s. Mnmnaor PHILADELPHIA, PENNSYLVANIA, Assrenon on one HALF HIS RIGHT TO SAMUEL'H- DAVIS, JR., OF SAME PLACE.
IMPROVEMENT IN SAW-FRAMES.
Specification forming part of Letters Patent No. 115,500, dated May 30, 1871.
To all whom it may concern:
. Be it known that I, HENRY S. MILLER, of the city and county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Saw-Frames, and I do hereby declare .the following tobe-a'full, clear,
and exact description of the nature thereof sufficient to enable others skilled in the art to which my invention appertains to fully understand and use the same, reference being had to the accompanying drawing making part of this specification, in whichrelieving the yoke of directstrain.
In the drawing, A and 13 represent the side pieces of the frameof a buck or other saw; 0,
the blade, and D, the tighteningyoke thereof, all of which may be of ordinary form and con- I struction. E E. represent stretchers, which extend from the sidepieces A B, and, in the pres entcase, consist of two arches, the crowns of which faceeach other. I Between these crowns I arrange acurved or other spring, F, the central portion being secured to a pin, G, on the bearing-plate H,against which rest the upper stretchers,the pinpassing through the latter,
I and byineans of suitable flanges said plate is prevented from lateral displacement. J represents the other bearin g-plate, which rests on M the lower stretcher; and against which bear the ends of thespringF. A pin, K, is fixed in the lower stretcher and passes through the plate J, which, by means of flanges formed upon it, is retained in placeand prevented from moving laterally.
When the parts are in position and the yoke tightened, the tendency is to press down the center of the upper stretcher. This bears against the spring, and in return forces down the center of the'lower stretcher, whereby the lower portions of the saw-frame are'pressed apart and the saw-blade is strained. The connection between the stretchers being elastic, all shocks to the frame, owing to knots and other obstacles acting against the saw-teeth, will be broken, and the strain on the yoke greatly eased. There will not be the dead thrusts between parts as where the stretchers are in direct contact, and while in my invention the connection between the stretchers is elastic, the straining of the blade will, nevertheless, be firm and uniform. The saw can be operated with case, since the arms of the sawyer will not receive the full force of blows or shocks from obstacles in the Wood, and thus simplicity, reliability, and practicability are combined in my invention.
I am aware that stretchers have been ap plied to saw-frames, and I am also aware that such stretchers consist of two arches having theircenters or crowns arranged to face each other. Itherefore do not claim such parts;
- but I do claim-- The spring F, as arranged with the stretchers E E of the saw-frame, substantially as and for the'purpose described. 7
The above signed by me this 26th day of April, 1871.
HENRY S. MILLER. v Witnesses:
Joan A. Wmonnsnmar,
A. H. SHOEMAKER.
Publications (1)
Publication Number | Publication Date |
---|---|
US115500A true US115500A (en) | 1871-05-30 |
Family
ID=2184959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US115500D Expired - Lifetime US115500A (en) | Improvement in saw-frames |
Country Status (1)
Country | Link |
---|---|
US (1) | US115500A (en) |
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0
- US US115500D patent/US115500A/en not_active Expired - Lifetime
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