US56929A - Improvement in head-blocks for saw-mills - Google Patents
Improvement in head-blocks for saw-mills Download PDFInfo
- Publication number
- US56929A US56929A US56929DA US56929A US 56929 A US56929 A US 56929A US 56929D A US56929D A US 56929DA US 56929 A US56929 A US 56929A
- Authority
- US
- United States
- Prior art keywords
- blocks
- saw
- head
- mills
- improvement
- 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
- 102100011898 FOLR1 Human genes 0.000 description 2
- 101700050183 FOLR1 Proteins 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000717 retained Effects 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B29/00—Gripping, clamping, or holding devices for the trunk or log in saw mills or sawing machines; Travelling trunk or log carriages
- B27B29/08—Trunk or log carriages with gripping means designed to pass the saw blade(s), especially for band saws; Arrangement of gripping accessories thereon; Turning devices thereon
- B27B29/10—Assemblies for laterally adjusting or controlling the clamping or turning devices with respect to the thickness of the board to be sawn
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/647—With means to convey work relative to tool station
- Y10T83/6492—Plural passes of diminishing work piece through tool station
- Y10T83/6499—Work rectilinearly reciprocated through tool station
- Y10T83/6508—With means to cause movement of work transversely toward plane of cut
- Y10T83/6515—By means to define increment of movement toward plane of cut
- Y10T83/6518—By pusher mechanism
- Y10T83/6523—Including plural, simultaneously acting pusher elements
- Y10T83/6532—Movement by rack and pinion or pawl
Definitions
- the object of this invention ⁇ is to obtain a device whereby logs may be set to a circular saw by the sawyer himself without the aid of an assistant; and it consists in setting the log by means of a bar or handle passing over the logl and saw and within convenient reach of the sawyer, ⁇ in connection with certain mechanism hereinafter described.
- a A representthe carriage of a saw-mill; B B, the head-blocks, placed transversely thereon, and fitted between suitable guide- V blocks C C.
- Gr is a rock-shaft, the ends of which pass into the guide-blocks C C, said blocks serving as bearings for the rock-shaft.
- a metal plate, H having two holes, aa, made in them to receive the inner ends ot' pawls I I', which rest upon springs J J, the latter having a tendency to keep the outer or free ends of the pawls engaged with racks K at the under sides of the head-blocks B B.
- the holes a a/ in each plate H are made at opposite sides of the axis of the rock-shaft G, so that when the latter is operated one pawl will engage with the rack K of its head-blockwhile the other is drawnpback. This will be fully understood by referring to Fig. 1.
- L is a standard, rmly attached to the carriage, and LX is a toggle, which connects the upper end of the setting-lever M with the upper end of the standard L. rlo the lower arm ot' the toggle there is connected a bar or handle, N, which is retained in al1orizontal position, or about in that position, by a cord or chain, O, attached to a spring, P, secured to the upper end of the standard.
- the bar or handle N extends transversely over the carriage A A and within convenient reach of the Sawyer, who, when the mill is in operation, stands at the point *n From the above description it will be seen that the sawyer, by operating the bar or handle N, will actuate the toggle LX, setting-lever M, rock-shaft G, and the pawls I I, the
- the invention is now in use, and about live hundred feet more of lumber, with one less hand, can be sawed in a day than. can be turned out by mills provided with the ordi- 4nary log-setting mechanism.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Finger-Pressure Massage (AREA)
Description
UNITED STATES PATENT OEEIcE.
J. A. GBIGGS, OF CHARLESTON, ILLINOIS.
IMPROVEMENT IN HEAD-BLOCKS FOLR SAW-MILlLS.
Specification forming part of Letters Patent No. 56,929, dated August 7, 1866. Y i
To all whom it ma/y concern:
Be it rknown that I, J. A. GRIGGS, of Charleston, in the county of Coles and State of Illinois, have invented a new and usefulImprovement in Log-Setting Devices for Sawto the accompanying` drawings, forming part of this specitication, in whichr Figure l is a vertical section of my invention, taken in the line wat, Fig. 2; Fig. 2, a plan or top View of the same; Fig. 3, a detached inverted plan of one of the head-blocks pertaining to the same. Y
Similar letters of reference indicate like parts.
The object of this invention `is to obtain a device whereby logs may be set to a circular saw by the sawyer himself without the aid of an assistant; and it consists in setting the log by means of a bar or handle passing over the logl and saw and within convenient reach of the sawyer,`in connection with certain mechanism hereinafter described.
A A representthe carriage of a saw-mill; B B, the head-blocks, placed transversely thereon, and fitted between suitable guide- V blocks C C.
Dis a circular saw, the mandrel or arbor E of which is placed on a suitable framing, F. The parts above described may be constructed in the usual manner, and therefore do not require a special or minute description.
Gr is a rock-shaft, the ends of which pass into the guide-blocks C C, said blocks serving as bearings for the rock-shaft. 0n each end of this rock-shaft there is secured a metal plate, H, having two holes, aa, made in them to receive the inner ends ot' pawls I I', which rest upon springs J J, the latter having a tendency to keep the outer or free ends of the pawls engaged with racks K at the under sides of the head-blocks B B. The holes a a/ in each plate H are made at opposite sides of the axis of the rock-shaft G, so that when the latter is operated one pawl will engage with the rack K of its head-blockwhile the other is drawnpback. This will be fully understood by referring to Fig. 1.
L is a standard, rmly attached to the carriage, and LX is a toggle, which connects the upper end of the setting-lever M with the upper end of the standard L. rlo the lower arm ot' the toggle there is connected a bar or handle, N, which is retained in al1orizontal position, or about in that position, by a cord or chain, O, attached to a spring, P, secured to the upper end of the standard. The bar or handle N extends transversely over the carriage A A and within convenient reach of the Sawyer, who, when the mill is in operation, stands at the point *n From the above description it will be seen that the sawyer, by operating the bar or handle N, will actuate the toggle LX, setting-lever M, rock-shaft G, and the pawls I I, the
latter moving the head-blocks B B and setting the log to the saw.
By this arrangement the Sawyer is saved considerable labor, as the log may be set to the saw from a point or position where themechanism for gigging back the carriage may be set in motion. Considerable time is also saved thereby.
The invention is now in use, and about live hundred feet more of lumber, with one less hand, can be sawed in a day than. can be turned out by mills provided with the ordi- 4nary log-setting mechanism.
J. A. GRIGGS.
Witnesses:
S. H. NEsBrr, D. C. AMBLEE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US56929A true US56929A (en) | 1866-08-07 |
Family
ID=2126469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US56929D Expired - Lifetime US56929A (en) | Improvement in head-blocks for saw-mills |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US56929A (en) |
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0
- US US56929D patent/US56929A/en not_active Expired - Lifetime
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