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US2997A - Sawmill - Google Patents

Sawmill Download PDF

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Publication number
US2997A
US2997A US2997DA US2997A US 2997 A US2997 A US 2997A US 2997D A US2997D A US 2997DA US 2997 A US2997 A US 2997A
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United States
Prior art keywords
cross
arch
head
double
sawmill
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Expired - Lifetime
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/547Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member
    • B26D1/553Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a wire-like cutting member with a plurality of wire-like cutting members
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/687By tool reciprocable along elongated edge
    • Y10T83/6895Plural reciprocable tools
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8821With simple rectilinear reciprocating motion only
    • Y10T83/8828Plural tools with same drive means

Definitions

  • my invention consists in the manner of aiiixing the saws to the ends of the vibrating ⁇ beams, and properly straining them.
  • the construction of this machine is similar in most of its parts to saw mills now in common use for sawing two logs at the same time except those connected with hanging I employ two fender parts (marked (a) in the drawing) on each side. These are connected in pairs at top by cross ties and below the carriage (which is not represented). There are two other ties (5) the upper ones sustain two steps (5) (one being hid by the beam) on which the fulcrum of a double-vibrating beam, oscillates.
  • the vibrating-beam (c) is formed of two planks set edgewise. They are gradually tapered ofi' from the center toward each end, and are made stout enough to resist the strain to which they are submitted.
  • the fulcrum pins are connected with this iron (.c); the beam is further stayed by cross irons (om) and rodsr ('04) ruiming from the top of one arch-head to the center, at which it is fastened and then up to ,the opposite arch-head.
  • the lower double beam is like that just described in every particuy lar except being reversed in position; to this the motive power is attached by a pitman connected with it at one end.V
  • each of the cross ties (b, b.) are grooved on their inner side, and serve as guides to the stirrup-slides, to which the saws are connected.
  • Each of the stirrup-slides consists of two side pieces (f) which slide in the grooves (e). On these are two projections above and one below. Betweenthe upper ones the end of a cross piece (e) is jointed which4 l connects the sides; below there are two cross f pieces e- To the upper one the chains (g) are hitched which extend up over the curve of the arch-head of the beam which have a groove in them to receive the linksV of the chains.
  • the two lower plates (6) and has two keys the beams by a hook the shank of which runs up through a staple at the upper end of the cross head and has a screw on it to adj ust the strain on the saw.
  • stirrup-slides and double-chains constructed and ⁇ arranged in the manner and for the purposeabove specified.
  • the cha-ins are aliixed to i the above arrangement the saws are l

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

Description

Vio
Vthe saws.
lNITEI) YSU'ATES VPATENT OFFICE.
JOI-IN E. KENDERDINE, OF LUMBER'ION, PENNSYLVANIA.
Y SAWMILL.
i Specification of Letters Patent No. 2,997, dated March 10, 1843.
To all whom t may concern:
Be it kno-wn that I, JOHN E. KENDERDINE, of Lumberton, in the county of Bucks and State of Pennsylvania, have invented a new and useful Improvement in Sawmills; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification7 in which- Figure l, is a perspective view; Fig. 2.
stirrup-slide andv arch head of beam detached.
The nature of my invention consists in the manner of aiiixing the saws to the ends of the vibrating` beams, and properly straining them.
The construction of this machine is similar in most of its parts to saw mills now in common use for sawing two logs at the same time except those connected with hanging I employ two fender parts (marked (a) in the drawing) on each side. These are connected in pairs at top by cross ties and below the carriage (which is not represented). There are two other ties (5) the upper ones sustain two steps (5) (one being hid by the beam) on which the fulcrum of a double-vibrating beam, oscillates. The vibrating-beam (c) is formed of two planks set edgewise. They are gradually tapered ofi' from the center toward each end, and are made stout enough to resist the strain to which they are submitted. This beam -is placed horizontally and vibrates between the two cross ties On each end of both of the planks forminothe double beam upright pieces (c) are aixed` the outer edge of which is curved to form arch-heads, on which chains work as hereafter described; at the center the planks are connected by an iron (0) which passes across from one to the other underneath and bends up at each end at right angles outside the planks, allowing both halves of the beam a motion independent of each other. The fulcrum pins are connected with this iron (.c); the beam is further stayed by cross irons (om) and rodsr ('04) ruiming from the top of one arch-head to the center, at which it is fastened and then up to ,the opposite arch-head. The lower double beam is like that just described in every particuy lar except being reversed in position; to this the motive power is attached by a pitman connected with it at one end.V
Opposite the ends of the beams, there are vertical pieces (e) attached to each of the cross ties (b, b.) they are grooved on their inner side, and serve as guides to the stirrup-slides, to which the saws are connected. Each of the stirrup-slides consists of two side pieces (f) which slide in the grooves (e). On these are two projections above and one below. Betweenthe upper ones the end of a cross piece (e) is jointed which4 l connects the sides; below there are two cross f pieces e- To the upper one the chains (g) are hitched which extend up over the curve of the arch-head of the beam which have a groove in them to receive the linksV of the chains. the two lower plates (6) and has two keys the beams by a hook the shank of which runs up through a staple at the upper end of the cross head and has a screw on it to adj ust the strain on the saw.
By attached to the upper and lower doublebeam, one at each end, and can be strained in the most exact manner, a greater strain 'being given to either edge of the saw at pleasure. I/Vhat I claim as my invention and desire to secure by Letters Patent isc The combination of the double beams,V
stirrup-slides, and double-chains constructed and` arranged in the manner and for the purposeabove specified.
Witnesses LUKnNs THOMAS, CHALKLEY Goon.
JOHN E. KEND-ERDINE i The saw passes up between,
The cha-ins are aliixed to i the above arrangement the saws are l
US2997D Sawmill Expired - Lifetime US2997A (en)

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US2997D Expired - Lifetime US2997A (en) Sawmill

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094424A1 (en) * 2006-10-18 2008-04-24 Kabushiki Kaisha Toshiba Light source control unit and light source control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080094424A1 (en) * 2006-10-18 2008-04-24 Kabushiki Kaisha Toshiba Light source control unit and light source control method

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