Cutting – Processes – With reorientation of work between cuts
Patent
1987-09-08
1989-04-04
Sikes, William L.
Cutting
Processes
With reorientation of work between cuts
83 39, 83404, 83407, B26D 100
Patent
active
048174785
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a lumber processing and saw milling assembly.
Mobile milling apparatuses and the like have hitherto previously been known and used in the past however their size, configuration and arrangement are such that only relatively small amounts of timber could be processed in a given period.
Conventional static plant and equipment such as that found in lumber mill yards and the like are extremely costly to set up and operate, relative to the production rate of sawn timber The said plants are physically bulky consisting of various sawing and handling assemblies, with little sophistication in their integration. Traditionally, only a particular system or technique has been utilized within each individual process as distinct from a number of processes. The problems of the isolation of the various systems and processes from each other is highlighted by the need for transfer chains used throughout traditional mills to link the various processes together. The transfer chains inherently become storage areas requiring constant stoping and starting to overcome poor integration between the various processes. Consequently, cluttering and bunching of timber results, inhibiting a continuous flow and production. Also, once the plant is set up, it cannot be easily relocated either within the particular lumber mill or at an alternative geographic location.
The present invention seeks to ameliorate the prior art disadvantages and to provide a more cost effective and quicker means for milling timber by providing a mobile milling assembly, embracing all of the sawing and handling processes combined which have subsequently been totally integrated to provide a continuous sawing system consisting of detachable, interconnecting benches having an arrangement of conveyors, separators adapted to move laterally and vertically and saws and various apparatuses providing a versatile and variable roundabout facility for secondary, tertiary and subsequent cutting of timber logs after a primary cutting operation has been performed on a particular log.
The saw mill assembly further comprises a timber infeed means connecting with an infeed station, a series of conveyors which move timber from one location to another, at least one set or a series of saw blades at various positions on the assembly for cutting the timber, at least one directing means to control the movement of cut timber around the assembly, at least one return feed means, and means to enable the timber to be exited from the assembly at selected stages of cutting.
The overall assembly is adapted to fit on to or form a trailer suitable for transportation and provides time ordered guiding and separating of cut timber.
According to another aspect of the invention there is a stopper or stoppers provided which work in conjunction with either a gate system or separating means or both combined causing sawn pieces of timber to arrive at a predesignated destination at different time intervals.
The assembly also employs the system of gates and in combination with the stopper to enable the timber to be released from the assembly at intervals or to cause cut timber to remain on the assembly for further cutting.
According to another aspect of the invention there is provided a hob or hobs adapted to be driven, said hob or hobs holding and driving timber through a gauge for cutting by a saw said hob rotating about an axis and adapted to apply a substantially downward force on the timber being cut to avoid riding up of the timber on the hob.
According to a further aspect of the invention there is provided a primary cutting bench in combination with a center bench and a speed bench on which cutting, sorting and conveying functions are performed.
According to another aspect of the present invention there is disclosed method of cutting timber, said method comprising the steps of:
(a) feeding uncut timber through a cutting means at a first location forming at least two sawn pieces;
(b) allowing a first of said sawn pieces to fall under gravity and be subsequently fed throu
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Andrews William J.
Fisher Angus C.
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