AU673503B2 - A chain saw mill - Google Patents
A chain saw millInfo
- Publication number
- AU673503B2 AU673503B2 AU28787/92A AU2878792A AU673503B2 AU 673503 B2 AU673503 B2 AU 673503B2 AU 28787/92 A AU28787/92 A AU 28787/92A AU 2878792 A AU2878792 A AU 2878792A AU 673503 B2 AU673503 B2 AU 673503B2
- Authority
- AU
- Australia
- Prior art keywords
- chain saw
- mill according
- saw mill
- uprights
- guiding means
- 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.)
- Ceased
Links
Landscapes
- Disintegrating Or Milling (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Road Repair (AREA)
Description
A CHAIN SAW MILL
Field of the Invention
The invention relates to a chain saw mill for cutting timber, in particular, but not limited to, cross cutting packs of timber to desired lengths .
Background of the Invention
In the lumber industry a variety of chain saw mills have been used to cut large pieces of timber or packs of timber. Typically packs of timber are made up of large numbers of individual pieces of timber of similar dimensions . These packs are assembled to allow them to be cross cut to desirable lengths in a single economic step. This cut timber can then be banded and either stored for sale or dispatched for delivery to a building site.
As, economically, it is clearly desirable to cut this amount of timber in a single operation as opposed to individual cross cutting, a number of cutting systems have been proposed.
One such system available on the Australian market is of German design and sold under the name of HOLTEC. This system consists of a conveyor upon which the pack of timber is placed. An elongated chain saw has one end pivotally attached to a platform located near one longitudinal edge of the conveyor. The other end of the chain saw can be rotated from an approximately vertical position through 90 degrees to an approximately horizontal position to cross cut packs of timber.
The HOLTEC system also includes a computerised control which allows the operator to select, change or monitor various operating parameters such as length of timber and rate of cutting. Hydraulic units are used to operate the movement of the chain saw and the pack of timber.
This system is very large and of complex manufacture . Consequently it is very expensive and usually beyond the financial means of the small timber mills.
Investigations have been carried out in an effort to develop a cutting system which can cross cut large packs of timber but be simple and relatively inexpensive in design.
Summary of the Invention
Surprisingly, it has been fotmd that unlike the pivoted chain saw mills of the prior systems, ϊt is possible to carry out economic cross cutting of packs of timber using an elongated chain saw which is generally horizontally orientated and able to be guided vertically whilst still generally maintaining such horizontal orientation.
According to this invention, there is provided a chain saw mill for cutting timber comprising:
a main frame having two spaced guiding means; and
an elongated, substantially horizontal chain saw bridging the space between the guiding means and adapted to move along the guiding means in a vertical direction.
Preferably, the two spaced guiding means are substantially vertical. The chain saw may be connected to each of the two spaced guiding means by connecting means.
The connecting means may have a projection adapted to communicate with and be moveable along one of the two spaced guiding means.
The two spaced guiding means may comprise two opposing pairs of uprights or, preferably, may comprise one pair of uprights and an opposing upright. Generally, each pair of uprights is located adjacent each end of the chain saw. Similarly, if the guiding means comprises one pair of uprights and an opposing upright then they are located adjacent each end of the chain saw.
Typically, the opposing upright may comprise an open guide channel and the connecting means may have a projection adapted to be received within, or on a surface of, and moveable along the guide channel.
Each of the uprights of the pair of uprights may have a surface on which the projection is adapted to engage and be moveable therealong . The projection may include one or more wheels to assist easy movement of the chain saw relative to the guiding means .
At least one of the connecting means may comprise a moveable frame having at least two opposed projections . Generally, the moveable frame will extend between the pair of uprights .
The moveable frame may have any suitable shape or configuration . Generally, it is desired that the moveable frame has two parallel arms which extend in the same direction as and are located adjacent the pair of uprights. The arms may have attached thereto several wheels adapted to engage surfaces of the pair of uprights for movement therealong in such a way that sideways movement of the moveable frame is resisted.
Alternatively, the projections of the moveable frame may be adapted to be located within guide channels of the pair of uprights so that the moveable frame is free for approximate vertical movement up and down the channels .
The chain saw motor is preferably mounted on the connecting means at one end of the chain saw. In this preferred arrangement, the distant end of the chain saw is connected either directly or indirectly to the other movable frame.
In a further preferred embodiment, the movable frame to which the elongated chain saw is attached is counterbalanced to enable the moveable frame to be moved up and down with ease . The counterbalance may be effected by a counterbalancing weight which is connected to the moveable frame via a cable (or other suitable means such as a string, rope or cord) passing through a pulley system located on the main frame above the chain saw.
In a further preferred embodiment of the invention the counterbalancing weight can be selected to ensure a predetermined weight can be exerted by the chain saw upon timber with little operator assistance .
Further, at least one of the connecting means may comprise a handle to enable an operator to raise and lower the chain saw as desired.
Preferably, the chain saw mill may further comprise a support base along which the chain saw mill may be moved. Typically, a pair of parallel tracks are provided as part of the support base and the main frame of the chain saw mill interacts with them to permit relative movement. The main frame may further comprise wheels to assist movement of the mill along the support base. The main frame can be locked into any predetermined position along the tracks to enable cutting of the timber to desired lengths.
Brief Description of the Drawings
The invention is now further illustrated with reference to the accompanying drawings in which:
Figure 1 is a perspective view of a chain saw mill according to one embodiment of the invention.
Figure 2 is a side elevation of the chain saw mill of figure 1 with the timber removed; and
Figure 3 is a front cross-sectional elevation of the chain saw mill of figure 1 with the timber removed.
Figure 4 is a front view of a moveable frame according to a preferred embodiment of the invention.
Figure 5 is a plan view of the moveable frame of Figure 4 in engagement with adjoining uprights.
Figure 6 is a perspective view of a distant end of the chain saw in engagement with an opposing upright in accordance with a preferred embodiment of this invention.
The chain saw mill 10 includes a structural frame 11. Frame 11 is comprised of four upstanding posts 12, 13, 14 and 15. Horizontal bars
16, 17 connect between the posts 12 , 14 and 13, 15 respectively. Cross-bars 18 and 19 connect between uprights 12, 13 and 14, 15 respectively.
As more particularly shown in Figure 4, a chain saw support frame 22 has a generally square shape. The parallel vertical bars 40 which define the sides of the frame have wheels 41 connected thereto. As more clearly shown in Figure 5, the lateral edges of the vertical bars 40 are tapered so that the wheels 41 which are attached thereto are offset so that they engage surfaces of a correspondingly tapered upright 12, 13. Chain saw support frame 22 is able to freely move up and down in a vertical direction by means of the wheels 41 rolling along surfaces of the adjoining uprights 12, 13. The offset orientation of the wheels 41, as shown in Figure 5, enables the wheels 41 to engage surfaces of the uprights 12, 13 in such a way that sideways movement of the support frame 22 relative to the uprights 12, 13 is resisted.
A handle 23 projects outwardly away from the chain saw support frame 22 and is generally L shaped.
A chain saw 24 is attached to a chain saw motor 25 which is mounted on chain saw support frame 22. A control panel 26 allows an operator to start or stop chain saw motor 25. Control panel 26 is connected by electrical connectors 28 to a remote power source (not shown) and may be mounted conveniently on either the chain saw support frame 25 or the structural frame 11.
As more particularly shown in Figure 6, the chain saw 24 is connected to a mount 27 adjacent vertical guide channel 20. Typically, mount 27 is bolted to chain saw 24 and has wheels 41 located within the guide channel 20 which are adapted to roll along surfaces of the guide channel 20. Mount 27 is thereby movable vertically. Generally, the vertical movement of mount 27 corresponds with the vertical movement of chain saw support frame 22 so that the chain saw 24 remains in a substantially horizontal orientation at all times.
At the upper ends of uprights 12 and 13, pulleys 29 and 30 are located. An additional pair of pulleys 31 and 32 are attached to cross bar 18.
Tubes 35 and 36 are connected to one face of uprights 12 and 13 respectively and house a pair of counterweights 37 and 38 as more clearly shown in figure 3. A pair of cables 33 and 34 are connected at one of their ends to the chain saw support frame, pass over the respective pulleys 31, 29 and 32, 30 and are attached at their other ends to counterweights 37 and 38.
The chain saw mill 10 may be positioned upon a pair of tracks 39. The chain saw mill 10 is adapted to move along the tracks 39 and may be locked at any desired position along the tracks 39.
In use, timber which is to be cut by chain saw mill 10 is positioned on a support base. The chain saw mill 10 is moved along the tracks 39 so that the chain saw 24 is located at a predetermined point along the timber. This predetermined point will vary depending upon the desired length of timber given the particular job involved. In its inoperative position chain saw mill 10 has the chain saw 24 removed vertically away from timber. This allows the timber and the chain saw mill 24 to be easily positioned and enables various heights of timber packs to be positioned for cutting.
Control panel 26 is operated to activate chain saw motor 25 and in turn chain saw 24. Chain saw support frame 22 is counterbalanced via the sets of pulleys and counterweights 37 and 38 to allow an operator to grip handle 23 and move the chain saw support frame 22 and hence the chain saw 24 down towards timber 39 or upwardly away from it with relative ease. The counterbalance may be almost exact thereby allowing the operator to remove his hand from handle 23 without the saw 24 either moving upward or downward. Alternatively, a predetermined weighting can be constantly applied in the downward direction so that the chain saw exerts a constant downwards force on the timber being cut.
The location of the far end of chain saw 24 via mount 27 in guide channels 20 and 21 assists the approximate vertical movement of the chain saw 24 down through timber 39.
The structural frame and the chain support frame may be made of any suitably strong material such as steel. The chain saw 24, chain saw motor
25 and the control panel are made of conventional materials and components well known in the art.
A chain saw mill of the above type is simple in construction, permits control of the saw at both its ends, permits easy variation of the length of timber to be cut and is economic to produce and install.
Claims (23)
1. A chain saw mill for cutting timber comprising:
a main frame having two spaced guiding means; and
an elongated, substantially horizontal chain saw bridging the space between the guiding means and adapted to move along the guiding means in a vertical direction.
2. A chain saw according to claim 1, wherein the two spaced guiding means are substantially vertical.
3. A chain saw mill according to either claim 1 or claim 2, wherein each of the two spaced guiding means is attached to the chain saw by connecting means.
4. A chain saw mill according to claim 3, wherein the connecting means has a projection adapted to communicate with and be moveable along one of the two spaced guiding means.
5. A chain saw mill according to any one of claims 1 to 4, wherein the two spaced guiding means comprise two opposing pairs of uprights.
6. A chain saw mill according to any one of claims 1 to 4, wherein the two spaced guiding means comprise one pair of uprights and an opposing upright.
7. A chain saw mill according to claim 6, wherein the opposing upright comprises an open guide channel adapted to received the projection.
8. A chain saw mill according to claim 5 or claim 6, wherein each of the uprights of the pair of uprights has a surface on which the projection is adapted to engage and be moveable therealong.
9. A chain saw mill according to any one of claims 5 to 8, wherein the connecting means attaching one pair of uprights to the chain saw is a moveable frame having at least two opposed projections.
10. A chain saw mill according to claim 9, wherein the moveable frame comprises at least two projections adapted to be moveable along surfaces of the pair of uprights .
11. A chain saw mill according to any one of claims 4 to 10, wherein the projection includes a wheel.
12. A chain saw mill according to any one of claims 3 to 11, wherein a motor for driving the chain saw is mounted on the connecting means .
13. A chain saw mill according to any one of claims 1 to 12 , wherein the chain saw is counterbalanced.
14. A chain saw mill according to claim 13 wherein the chain saw is counterbalanced by means of a counterweight connected to the connecting means.
15. A chain saw mill according to claim 14 wherein the connecting means further includes a handle.
16. A chain saw mill according to any one of claims 1 to 15, further comprising a support base wherein the main frame is mounted on and moveable along the support base .
17. A chain saw mill according to claim 16, wherein the main frame further comprises wheels to assist the movement of the main frame along the support base.
18. A chain saw mill according to claim 16 or claim 17 , wherein the support base comprises a pair of parallel tracks .
19. A chain saw mill according to any one of claims 16 to 18, further comprising means to lock the mill into a desired position relative to the support base.
20. A chain saw mill for cutting timber, substantially as hereinbefore described with reference to the drawings .
058
AMΘJDED CLAIMS
[received by the International Bureau on 7 April 1993 (07.04.93) ; new claims 7, 9 and 14 added ; original claims 7, 8-11 and
12-20 replaced by new claims 8, 11-13 and 15-23 respectively ; remaining claims unchanged (3 pages)]
1. A chain saw mill for cutting timber comprising:
a main frame having two spaced guiding means; and
an elongated, substantially horizontal chain saw bridging the space 5 between the guiding means and adapted to move along the guiding means in a vertical direction.
2. A chain saw according to claim 1 , wherein the two spaced guiding means are substantially vertical .
3. A chain saw mill according to either claim 1 or claim 2, wherein each _Q of the two spaced guiding means is attached to the chain saw by connecting means.
4. A chain saw mill according to claim 3, wherein the connecting means has a projection adapted to communicate with and be moveable along one of the two spaced guiding means.
5 5. A chain saw mill according to any one of claims 1 to 4, wherein the two spaced guiding means comprise two opposing pairs of uprights.
6. A chain saw mill according to any one of claims 1 to 4, wherein the two spaced guiding means comprise one pair of uprights and an opposing upright.
Q 7. A chain saw mill according to claim 7, wherein an end of the chain saw is located within the opposing upright.
8. A chain saw mill according to claim 6 or claim 7, wherein the opposing upright comprises an open guide channel adapted to received the projection.
9. A chain saw mill according to claim 8, wherein the projection includes one or more wheels adapted to roll along an inner surface of the open guide channel.
10. A chain saw mill according to claim 5 or claim 6 , wherein each of th uprights of the pair of uprights has a surface on which the projection is adapted to engage and be moveable therealong.
11. A chain saw mill according to nny one of claims 5 to 10, wherein the connecting means attaching one pair of uprights to the chain saw is a moveable frame having at least two opposed projections .
12. A chain saw mill according to claim 11 , wherein the moveable frame comprises at least two opposed projections adapted to be moveable along surfaces of the pair of uprights .
13. A chain saw mill according to any one of claims 4 to 12 , wherein the projections include one or more wheels adapted to roll along surfaces of the pair of uprights .
14. A chain saw mill according to clnim 13 , wherein the surfaces of each of the pair of uprights have a nVn-shaped cross-section and each projection comprises two or more wheels in offset orientation to roll along substantially perpendicular "portions of the surfaces .
15. A chain saw mill according to any one of claims 3 to 14 , wherein a motor for driving the chain saw is mounted on the connection means .
16. A chain saw mill according to any one of claims 1 to 15 , wherein the chain saw is counterbalanced .
17. A chain saw mill according to claim 16 , wherein the chain saw is counterbalanced by means of a counterweight connected to the connecting means .
18. A chain saw mill according to claim 17 wherein the connecting means further includes a handle .
19. A chain saw mill according to any one of claims 1 to 18, further comprising a support base wherein the main frame is mounted on and moveable along the support base .
20. A chain saw mill according to claim 19, wherein the main frame further comprises wheels to assist the movement of the main frame along the support base.
21. A chain saw mill according to claim 19 or claim 20, wherein the support base comprises a pair of parallel tracks.
22. A chain saw mill according to any one of claims 19 to 21, further comprising means to lock the mill into a desired position relative to the support base.
23. A chain saw mill for cutting timber, , substantially as hereinbefore described with reference to the drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU28787/92A AU673503B2 (en) | 1991-10-30 | 1992-10-30 | A chain saw mill |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPK9206 | 1991-10-30 | ||
| AUPK920691 | 1991-10-30 | ||
| AU28787/92A AU673503B2 (en) | 1991-10-30 | 1992-10-30 | A chain saw mill |
| PCT/AU1992/000588 WO1993008967A1 (en) | 1991-10-30 | 1992-10-30 | A chain saw mill |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU14702/97A Division AU1470297A (en) | 1991-10-30 | 1997-02-14 | A chain saw mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2878792A AU2878792A (en) | 1993-06-07 |
| AU673503B2 true AU673503B2 (en) | 1996-11-14 |
Family
ID=25620840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU28787/92A Ceased AU673503B2 (en) | 1991-10-30 | 1992-10-30 | A chain saw mill |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU673503B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2549236A (en) * | 1945-12-04 | 1951-04-17 | Neils Lumber Company J | Log bucking chain saw |
| US3260288A (en) * | 1963-11-12 | 1966-07-12 | Robert L Currie | Power operated chain saw |
| AU1344383A (en) * | 1982-04-13 | 1983-10-20 | Quest 80 Ltd. | Log cutting means |
-
1992
- 1992-10-30 AU AU28787/92A patent/AU673503B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2549236A (en) * | 1945-12-04 | 1951-04-17 | Neils Lumber Company J | Log bucking chain saw |
| US3260288A (en) * | 1963-11-12 | 1966-07-12 | Robert L Currie | Power operated chain saw |
| AU1344383A (en) * | 1982-04-13 | 1983-10-20 | Quest 80 Ltd. | Log cutting means |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2878792A (en) | 1993-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT390433B (en) | DEVICE FOR APPLYING FLEXIBLE SPACERS | |
| EP0014698B1 (en) | Machine for unfastening the strings or binders of packed goods | |
| US4078460A (en) | Timber milling apparatus | |
| DE2731230B1 (en) | Numerically controlled flat glass cutting machine | |
| AU673503B2 (en) | A chain saw mill | |
| US3824919A (en) | Method of and apparatus for fabricating wood structures | |
| WO1993008967A1 (en) | A chain saw mill | |
| WO1996033058A1 (en) | Saw cable guiding device | |
| US3457975A (en) | Apparatus for transporting and treating trees | |
| US3304824A (en) | Bar handling and shearing machine | |
| CA2484131A1 (en) | Obstruction detection device for truss fabrication system | |
| DE20304654U1 (en) | Device for demolishing buildings | |
| DE10225183A1 (en) | Demolition machine for especially walls has transporting device mounted on top of wall and movable along it, and means to support transporting device on wall and which are brought into engagement with sides of wall | |
| CN214530231U (en) | A wear to restraint device for steel strand wires | |
| CN215249420U (en) | Adjustable construction platform for building | |
| EP0335842B1 (en) | Sectional scaffolding with motor-driven base und sidemounted elevator | |
| US3330175A (en) | Moveably supported cut off saw | |
| EP2778107A1 (en) | Scaffold module as well as a lift suitable for such a scaffold module | |
| DE19714848C2 (en) | Device for moving a person receiving device | |
| CN219548369U (en) | Novel construction hanging basket | |
| US4048892A (en) | Belt saw guiding device for a belt saw machine | |
| JP2739568B2 (en) | Beam rebar assembly method | |
| CN211849145U (en) | Highway rail guard mounting tool | |
| CN215588415U (en) | Steel coil flattening and cutting device for steel-wood fireproof door leaf panel | |
| JPH08109746A (en) | Assembling construction method of beam reinforcement and working support for it |