GB1240924A - Reciprocating saws - Google Patents

Reciprocating saws

Info

Publication number
GB1240924A
GB1240924A GB3200169A GB3200169A GB1240924A GB 1240924 A GB1240924 A GB 1240924A GB 3200169 A GB3200169 A GB 3200169A GB 3200169 A GB3200169 A GB 3200169A GB 1240924 A GB1240924 A GB 1240924A
Authority
GB
United Kingdom
Prior art keywords
frame
reciprocation
saw
shaft
eccentric
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
GB3200169A
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.)
Thomas Robinson and Son Ltd
Original Assignee
Thomas Robinson and Son Ltd
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 Thomas Robinson and Son Ltd filed Critical Thomas Robinson and Son Ltd
Priority to GB3200169A priority Critical patent/GB1240924A/en
Publication of GB1240924A publication Critical patent/GB1240924A/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
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
    • B27B3/10—Saw frames or guides 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
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
    • B27B3/04—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame with multiple- blade saw frame
    • 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
    • B27B3/00—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks
    • B27B3/02—Gang saw mills; Other sawing machines with reciprocating saw blades, specially designed for length sawing of trunks with vertically-reciprocating saw frame
    • B27B3/12—Mechanisms for producing the reciprocating movement of the saw frame; Arrangements for damping vibration; Arrangements for counter-balancing

Landscapes

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

Abstract

1,240,924. Frame saws. THOMAS ROBINSON & SONS Ltd., and R. H. BUCKLEY. 9 June, 1970 [25 June, 1969], No. 32001/69. Heading B5L. In a reciprocating saw comprising a plurality of saw blades 48, Fig. 2, mounted side-by-side and substantially upright in a frame 43 which is adapted for up and down reciprocation, means are provided to cause the frame to recede in the timber feed direction in the return stroke of each reciprocation and to advance contrary to said feed direction in the cutting stroke of each reciprocation, the locus of any point on the frame during the reciprocation approximating to an ellipse. As described the frame 43 comprises vertical bars 44 which are journalled on enlarged eccentric portions 35, 38 of crosshead shafts 29, 28 respectively journalled in vertical bars 23 of a carriage 22. A connecting rod 32 has one end 33 driven by an eccentric and its other end 34 is fixed to the portion 35 of shaft 29. Movement of the rod 32 causes the carriage 22 to slide up and down on rods 20 supported on a framework 10, so as to reciprocate the saw frame 43 vertically, and simultaneously causes the shaft 29 and the shaft 28 which is linked thereto to oscillate so that the enlarged portions 35, 38 cause the saw frame to reciprocate horizontally in correlation with the vertical reciprocation. Each saw blade 48 has one end secured to a spindle 49 and its other end apertured to receive an eccentric boss of a disc 51 which enables the blade to be individually tensioned. The discs 51 are mounted on a spindle 50 carried by a frame 54 movable by bolts 59 to tension the blades as a unit.
GB3200169A 1969-06-25 1969-06-25 Reciprocating saws Expired GB1240924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3200169A GB1240924A (en) 1969-06-25 1969-06-25 Reciprocating saws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3200169A GB1240924A (en) 1969-06-25 1969-06-25 Reciprocating saws

Publications (1)

Publication Number Publication Date
GB1240924A true GB1240924A (en) 1971-07-28

Family

ID=10331530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3200169A Expired GB1240924A (en) 1969-06-25 1969-06-25 Reciprocating saws

Country Status (1)

Country Link
GB (1) GB1240924A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002265A2 (en) * 1977-12-01 1979-06-13 Ermanno Pacini Machine for sawing blocks of solid, especially stony materials, such as marble, granite and the like
WO1996035559A1 (en) * 1995-05-12 1996-11-14 Eero Kivimaa Sawing machine
AT501153B1 (en) * 2005-04-29 2006-07-15 Wintersteiger Ag Mill saw has pushrods and both pushrods of crank drive engage common lateral support for housing frame chassis in region of tension beam nearest of two to crank drive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002265A2 (en) * 1977-12-01 1979-06-13 Ermanno Pacini Machine for sawing blocks of solid, especially stony materials, such as marble, granite and the like
EP0002265A3 (en) * 1977-12-01 1979-06-27 Ermanno Pacini Machine for sawing blocks of solid, especially stony materials, such as marble, granite and the like
WO1996035559A1 (en) * 1995-05-12 1996-11-14 Eero Kivimaa Sawing machine
AT501153B1 (en) * 2005-04-29 2006-07-15 Wintersteiger Ag Mill saw has pushrods and both pushrods of crank drive engage common lateral support for housing frame chassis in region of tension beam nearest of two to crank drive

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