GB1180458A - Improvements in or relating to Saws - Google Patents

Improvements in or relating to Saws

Info

Publication number
GB1180458A
GB1180458A GB5527667A GB5527667A GB1180458A GB 1180458 A GB1180458 A GB 1180458A GB 5527667 A GB5527667 A GB 5527667A GB 5527667 A GB5527667 A GB 5527667A GB 1180458 A GB1180458 A GB 1180458A
Authority
GB
United Kingdom
Prior art keywords
guard
motor
headstocks
carriage
blade
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
GB5527667A
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.)
Guilliet SA
Original Assignee
Guilliet SA
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 Guilliet SA filed Critical Guilliet SA
Publication of GB1180458A publication Critical patent/GB1180458A/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
    • B27G19/06—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for band or strap 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body

Landscapes

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

Abstract

1,180,458. Machinery safety devices. ETABS. GUILLIET. 5 Dec., 1967 [6 Dec., 1966], No. 55276/67. Heading F2J. Relates to protection and control circuits for a log saw comprising a log-carrying carriage 18 movable on rails 19 in front of a band saw blade 4 and carrying headstocks 21 movable transversely of the direction of movement of the carriage, each headstock carrying at least one clamp 25, 26 adjustable in height, the frame 1 of the saw carrying a guard 8 slidable parallel to the blade 4 between an upper position exposing the blade for sawing and a lower, safe position. When all the clamps 26 are moved to their fully lowered rest positions 26a and the headstocks 21 are moved to a rest position 21a withdrawn from the saw blade 4, they actuate respective limit switches G 1 , G 2 , G 3 , K to energize a relay DP to supply power to an electric motor P to lower the guard 8 to its safe position. The guard 8 is mounted on a slide 7 movable between vertical guides 6 on the frame 1, and is drivingly connected to the motor P by a chain 11. A relay MP controls energization of the motor P to raise the guard 8. At its upper and lower limits of movement, the guard actuates respective limit switches R, Q to stop the motor P. The headstocks 21 are traversed by a leadscrew 23 driven by a motor M controlled by relays VM, RM. The carriage is moved by a motor A controlled by relays VA, RA. With the carriage in a predetermined rest position, a limit switch N is actuated to energize relay DP to lower the guard 8 if it is not already in the safe position. Manual push-button switches cmp, cdp also control the raising and lowering, respectively, of the guard, and a contact op controlled by a sensing device O which senses any obstacle in the path of the guard ensures complete raising of the guard before a log reaches the blade. Push-button switches cvm and D are closed to advance the headstocks towards the saw blade, and crm to withdraw the headstocks. Push-button switches cva, cra are effective to control movement of the carriage by the motor A only when the guard is in the raised position (ga closed) or all the clamps 26 are in their rest positions 26a. When the clamps 26 are in their rest positions, contacts gm 1 , gm 2 , gm 3 are closed to automatically move the headstocks to their rest position 21a.
GB5527667A 1966-12-06 1967-12-05 Improvements in or relating to Saws Expired GB1180458A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR86319A FR1510957A (en) 1966-12-06 1966-12-06 Automatic protection device for log saws

Publications (1)

Publication Number Publication Date
GB1180458A true GB1180458A (en) 1970-02-04

Family

ID=8622034

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5527667A Expired GB1180458A (en) 1966-12-06 1967-12-05 Improvements in or relating to Saws

Country Status (3)

Country Link
DE (1) DE1653028A1 (en)
FR (1) FR1510957A (en)
GB (1) GB1180458A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1432553A2 (en) * 2001-07-11 2004-06-30 Black & Decker Inc. Power tool safety mechanisms
US8113097B2 (en) 2006-10-13 2012-02-14 Robert Bosch Gmbh Protective device
CN103286825A (en) * 2013-05-23 2013-09-11 安吉威隆机械有限公司 Clamping device for woodworking band saw numerical-control auto-feeding device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1432553A2 (en) * 2001-07-11 2004-06-30 Black & Decker Inc. Power tool safety mechanisms
EP1432553A4 (en) * 2001-07-11 2007-11-28 Black & Decker Inc Power tool safety mechanisms
US7827889B2 (en) 2001-07-11 2010-11-09 Black & Decker, Inc. Power tool safety mechanisms
US8186256B2 (en) 2001-07-11 2012-05-29 Black & Decker Inc. Power tool safety mechanisms
US8408107B2 (en) 2001-07-11 2013-04-02 Black & Decker Inc. Power tool safety mechanisms
US9267644B2 (en) 2001-07-11 2016-02-23 Black & Decker Inc. Power tool safety mechanisms
US9446533B2 (en) 2001-07-11 2016-09-20 Black & Decker Inc. Power tool safety mechanisms
US8113097B2 (en) 2006-10-13 2012-02-14 Robert Bosch Gmbh Protective device
CN103286825A (en) * 2013-05-23 2013-09-11 安吉威隆机械有限公司 Clamping device for woodworking band saw numerical-control auto-feeding device

Also Published As

Publication number Publication date
FR1510957A (en) 1968-01-26
DE1653028A1 (en) 1971-09-02

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