GB142422A - Improvements in fret-cutting machines - Google Patents
Improvements in fret-cutting machinesInfo
- Publication number
- GB142422A GB142422A GB109320A GB109320A GB142422A GB 142422 A GB142422 A GB 142422A GB 109320 A GB109320 A GB 109320A GB 109320 A GB109320 A GB 109320A GB 142422 A GB142422 A GB 142422A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- saw
- machines
- frame
- fret
- 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
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/007—Jig saws, i.e. machine saws with a vertically reciprocating narrow saw blade chucked at both ends for contour cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
142,422. Hobbies, Ltd., and Jewson, H. Jan. 13, 1920. Reciprocating-saw machines.-Relates to fretsawing machines, and comprises means for angularly adjusting the work table and for raising the upper arm of the saw frame automatically when a saw-blade breaks. The table F is mounted on an arm E of a bracket D secured to the tool tray C and is adapted to turn upon vertically-adjustable pivots J, J<1> and upon a curved enlargement E<2> of the arm E which has a tapered hole E<1> to receive the clamping-screw G in different angular positions. When free, the upper arm L of the saw frame is raised by a spring K<2> as far as permitted by a stop K<1> on the back arm of the frame.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB109320A GB142422A (en) | 1920-01-13 | 1920-01-13 | Improvements in fret-cutting machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB109320A GB142422A (en) | 1920-01-13 | 1920-01-13 | Improvements in fret-cutting machines |
Publications (1)
Publication Number | Publication Date |
---|---|
GB142422A true GB142422A (en) | 1920-05-06 |
Family
ID=9716018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB109320A Expired GB142422A (en) | 1920-01-13 | 1920-01-13 | Improvements in fret-cutting machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB142422A (en) |
-
1920
- 1920-01-13 GB GB109320A patent/GB142422A/en not_active Expired
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