GB506592A - Improvements in or relating to hack-saw machines - Google Patents
Improvements in or relating to hack-saw machinesInfo
- Publication number
- GB506592A GB506592A GB3301537A GB3301537A GB506592A GB 506592 A GB506592 A GB 506592A GB 3301537 A GB3301537 A GB 3301537A GB 3301537 A GB3301537 A GB 3301537A GB 506592 A GB506592 A GB 506592A
- Authority
- GB
- United Kingdom
- Prior art keywords
- saw
- arm
- screw
- stroke
- frame
- 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
Links
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
- B23D51/16—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 drives or feed mechanisms for straight tools, e.g. saw blades, or bows
- B23D51/20—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 drives or feed mechanisms for straight tools, e.g. saw blades, or bows with controlled feed of the tool, or with special arrangements for relieving or lifting the tool on the return stroke
-
- 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
- B23D51/02—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 beds; of guiding arrangements for work-tables or saw carriers; of frames
- B23D51/025—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 beds; of guiding arrangements for work-tables or saw carriers; of frames of arrangements for guiding the saw blade
-
- 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
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
- B23D61/123—Details of saw blade body
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
506,592. Reciprocating saws. NEILL & CO. (SHEFFIELD), Ltd., J., SWAIN, G., and BOWER, W. L. Nov. 30, 1937, No. 33016. [Class 145 (ii)] In a hack-saw machine, the blade is supported against bending in its own plane by a narrow support against which the back of the saw reciprocates; the guide support and the saw are fed in steps by irreversible mechanism at the end of each idle stroke and the line of the teeth is inclined to the back to ensure cutting during the whole of the forward movement. The saw 24, Figs. 1 and 3, is carried in a frame 16 which is reciprocated by the crank arm 51 and is guided by an arm 17 pivoted at one end to the frame of the machine, the other end being moved downwardly in steps by the feed mechanism. The saw is supported against bending in its own plane by a non-reciprocating plate 18 against which it works, this plate being mounted in a frame 20 bolted to the arms 17 and having lugs 19 which bear against the sides of the saw. The thickness of the plate 20 is less than the width of the cut so that it can follow the saw without binding. The feed mechanism, shown also in Fig. 4, is operated at the end of each idle stroke by an arm 46 mounted on shaft 45 and oscillated by linkwork from a cam 50 on the driving shaft. The arm 54 on shaft 45 rotates the outer nut 40 in the casing at the end of the working stroke so as to raise the central screw 31 and lever 17, to which the screw is connected, during the idle return stroke of the saw. The nut 40 is returned by an adjustable spring. At the beginning of the working stroke, arm 64 similarly rotates collar 58 which acts through friction clutch discs 59 to rotate the long nut 80 and feed screw 31 and arm 17 downwards. Rotation of the long nut 80 backwards is prevented by a ratchet and pawl. Return of collar 58 is also effected by an adjustable spring. Screw 31 may be rotated by handle 35 and bevel gearing to raise and lower the lever 17 quickly, the handle and screw being normally locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3301537A GB506592A (en) | 1937-11-30 | 1937-11-30 | Improvements in or relating to hack-saw machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3301537A GB506592A (en) | 1937-11-30 | 1937-11-30 | Improvements in or relating to hack-saw machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB506592A true GB506592A (en) | 1939-05-30 |
Family
ID=10347399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3301537A Expired GB506592A (en) | 1937-11-30 | 1937-11-30 | Improvements in or relating to hack-saw machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB506592A (en) |
-
1937
- 1937-11-30 GB GB3301537A patent/GB506592A/en not_active Expired
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