GB1180458A - Improvements in or relating to Saws - Google Patents
Improvements in or relating to SawsInfo
- 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
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.
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)
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 |
-
1966
- 1966-12-06 FR FR86319A patent/FR1510957A/en not_active Expired
-
1967
- 1967-12-05 DE DE19671653028 patent/DE1653028A1/en active Pending
- 1967-12-05 GB GB5527667A patent/GB1180458A/en not_active Expired
Cited By (9)
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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