GB612528A - Improvements in or relating to saws - Google Patents

Improvements in or relating to saws

Info

Publication number
GB612528A
GB612528A GB851046A GB851046A GB612528A GB 612528 A GB612528 A GB 612528A GB 851046 A GB851046 A GB 851046A GB 851046 A GB851046 A GB 851046A GB 612528 A GB612528 A GB 612528A
Authority
GB
United Kingdom
Prior art keywords
blade
cap
alternating current
secured
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
Application number
GB851046A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAROLD ERNEST FLORY
Original Assignee
HAROLD ERNEST FLORY
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HAROLD ERNEST FLORY filed Critical HAROLD ERNEST FLORY
Priority to GB851046A priority Critical patent/GB612528A/en
Publication of GB612528A publication Critical patent/GB612528A/en
Expired legal-status Critical Current

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
    • B23D51/163—Vibratory electromagnetic drives therefor
    • 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
    • B27B19/00—Other reciprocating saws with power drive; Fret-saws
    • B27B19/10—Fret-saws, i.e. with bilaterally chucked saw blade in a manually-guided bow
    • B27B19/12—Fret-saws, i.e. with bilaterally chucked saw blade in a manually-guided bow with power drive

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Surgical Instruments (AREA)
  • Sawing (AREA)

Abstract

612,528. Fret-saws. FLORY, H. E. March 19, 1946, No. 8510. [Class 145 (ii)] A fret-saw has disposed in the handle an electromagnetic device driven by alternating current to impart a reciprocating movement to the blade. The ends of U-shaped frame 1 are secured to caps 4 and 5. The cap 4 is screwed on an inner cap 6 secured to the end of a handle 7 in which a coil of wire is wound on a former 9. Within the former 9 an iron core 12 is slidably mounted with an extension 13 projecting through the cap 6 and being detachably secured at 14 to a blade 15. The other end of the blade is detachably secured to a rod 17 slidably mounted in the cap 5. When an alternating current is applied to the coil 8, a reciprocating movement will be carried out by the core 12 and imparted to the blade against the action of springs 19 and 20 preferably so arranged that the fundamental frequency of the systems is in tune with the frequency of the alternating current. In a modification, Fig. 2 (not shown), the frame 1 is resilient, the cap 4 is dispensed with and a threaded spindle is attached to the blade. In another modification, the frame is resilient and a rubber buffer or washer is provided instead of the helical spring 19.
GB851046A 1946-03-19 1946-03-19 Improvements in or relating to saws Expired GB612528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB851046A GB612528A (en) 1946-03-19 1946-03-19 Improvements in or relating to saws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB851046A GB612528A (en) 1946-03-19 1946-03-19 Improvements in or relating to saws

Publications (1)

Publication Number Publication Date
GB612528A true GB612528A (en) 1948-11-15

Family

ID=9853837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB851046A Expired GB612528A (en) 1946-03-19 1946-03-19 Improvements in or relating to saws

Country Status (1)

Country Link
GB (1) GB612528A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612919A (en) * 1949-09-19 1952-10-07 John L Phillips Kink eliminator for handsaws
CN104118014A (en) * 2014-01-03 2014-10-29 章建成 Scroll saw driven by electromagnets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612919A (en) * 1949-09-19 1952-10-07 John L Phillips Kink eliminator for handsaws
CN104118014A (en) * 2014-01-03 2014-10-29 章建成 Scroll saw driven by electromagnets
CN104118014B (en) * 2014-01-03 2016-01-06 章建成 The sweep-saw that electromagnet drives

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