GB1433876A - Safety device for power saws - Google Patents

Safety device for power saws

Info

Publication number
GB1433876A
GB1433876A GB4011272A GB4011272A GB1433876A GB 1433876 A GB1433876 A GB 1433876A GB 4011272 A GB4011272 A GB 4011272A GB 4011272 A GB4011272 A GB 4011272A GB 1433876 A GB1433876 A GB 1433876A
Authority
GB
United Kingdom
Prior art keywords
blade
saw
chain
engine
relatively movable
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
GB4011272A
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.)
Husqvarna Vapenfabriks AB
Original Assignee
Husqvarna Vapenfabriks AB
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
Priority claimed from SE954871A external-priority patent/SE388156B/en
Priority to DE2236138A priority Critical patent/DE2236138C3/en
Priority to US00281240A priority patent/US3810309A/en
Application filed by Husqvarna Vapenfabriks AB filed Critical Husqvarna Vapenfabriks AB
Priority to GB4011272A priority patent/GB1433876A/en
Publication of GB1433876A publication Critical patent/GB1433876A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/003—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for chain saws
    • 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
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/0033—Devices for attenuation of vibrations
    • 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
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

1433876 Machinery safety devices HUSQVARNA VAPENFABRIKS AB 28 Aug 1973 [30 Aug 1972] 40112/72 Heading F2J In a protective or safety device for poweroperated chain-saws, the chain-saw blade 1 is connected to the main body 5 by a detent 4 and return spring 3, and/or a pneumatic damper (not shown) to reduce the chance of accidants due to chain-saw kick-back. As shown, the saw blade 1 is secured to a blade-holder 2 turnably arranged, in the plane of the blade 1, on the main body 5, the return spring 3 serving to cushion saw kick-back. The detent 4 comprises a spring loaded ball arranged between the body 5 and blade-holder 2 and normally serving as an index point to maintain the blade 1 in its correct working position relative the body 5. The saw blade 1 may be mounted on the body 5 by a universal-joint mechanism (not shown) permitting other relative movements of the saw blade in addition to the turnable movement whereby forces generated during saw kickback are not transmitted directly to the body 5. Additionally the chain-saw power-operating unit, e.g. I.C. engine (not shown) may be automatically de-activated when relative movement between the blade 1 and body 5 exceeds a predetermined amount. Where a damper is used between the relatively movable blade 1 and body 5, this may be connected between the I.C. engine and said relatively movable blade and body and utilize the gas pressure of the I.C. engine. Further shock cushioning and damping devices including shoe and band brakes (all not shown), arranged between the relatively movable blade and body, are briefly described.
GB4011272A 1971-07-23 1972-08-30 Safety device for power saws Expired GB1433876A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2236138A DE2236138C3 (en) 1971-07-23 1972-07-22 Portable chain saw
US00281240A US3810309A (en) 1971-07-23 1972-08-16 Protection arrangement at chain motor saws
GB4011272A GB1433876A (en) 1971-07-23 1972-08-30 Safety device for power saws

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE954871A SE388156B (en) 1971-07-23 1971-07-23 MOTORSAW PROTECTION DEVICES
GB4011272A GB1433876A (en) 1971-07-23 1972-08-30 Safety device for power saws

Publications (1)

Publication Number Publication Date
GB1433876A true GB1433876A (en) 1976-04-28

Family

ID=26264317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4011272A Expired GB1433876A (en) 1971-07-23 1972-08-30 Safety device for power saws

Country Status (1)

Country Link
GB (1) GB1433876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481037A (en) * 2010-06-09 2011-12-14 Richard John Olley Chainsaw with Vibration Damping Between Guide Bar and Body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2481037A (en) * 2010-06-09 2011-12-14 Richard John Olley Chainsaw with Vibration Damping Between Guide Bar and Body

Similar Documents

Publication Publication Date Title
GB1280805A (en) Improvements in or relating to safety guard means for power-driven chain saws
US3810309A (en) Protection arrangement at chain motor saws
GB1433876A (en) Safety device for power saws
SE8100573L (en) BERBAR ENGINE CHAIN SAW
US3889763A (en) Vibration isolation handle for portable chain saw or the like
GB1325751A (en) Motor saws
GB966065A (en) Improvements relating to portable electric saws
GB766960A (en) Improvements in or relating to circular saw blades
GB974683A (en) Improvements in or relating to cutting tools for machine tools
FR1232145A (en) Pressure guard, in particular for rotary cutting tool, such as circular saw, grinding wheel, milling cutter or other, driven by a translational movement
GB807778A (en) Improvements in and relating to the control of sawmill blading
SU489631A1 (en) Matnikova saw
GB662982A (en) Improvements in and relating to power-driven saws
US1241807A (en) Sawmill log-setting device.
GB839117A (en) "improvements in combination tools"
DE965215C (en) Protection device for the metatarsus, which can be detachably attached to a shoe
GB707299A (en) Improvements in or relating to safety guards for machine tools
JPS54139189A (en) Lapping saw
GB509167A (en) Improvements in and connected with portable circular saws
ES78208U (en) Improved sawing machine (Machine-translation by Google Translate, not legally binding)
ES58421U (en) An improved shear to work the sheet (Machine-translation by Google Translate, not legally binding)
ES246145A1 (en) A perfect machine for sharpening tape saws (Machine-translation by Google Translate, not legally binding)
GB566878A (en) Improvements in or relating to power driven means for cutting and removing plaster and like bandages
ES205119U (en) Cutting tool for various applications (Machine-translation by Google Translate, not legally binding)
CN86209351U (en) Safety and protective casing for plane planer

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920828