Portable sawmill
AssigneePilot Pastoral Co. Pty. Ltd.
InventorWarren Geoffrey Lucas
Life of this patent
Estimating the term…
Abstract
A sawmill includes a four-stroke internal combustion engine having an output shaft for driving a sawblade. The output shaft has a longitudinal axis. The engine is mounted on the sawmill for rotation between a first operative position with the longitudinal axis of the output shaft extending at a first angle, and a second operative position with the longitudinal axis of the output shaft extending at a second angle transversely to the first angle. The engine has fuel injection to facilitate operation in the first and second operative positions and a lubrication system incorporating a wet sump. An oil pick up for the lubrication system is configured to pick up oil from the wet sump at both the first and second operative positions.
Claims25
A sawmill including:
- an engine or motor having an output shaft exiting therefrom for driving a sawblade, the output shaft having a longitudinal axis;
- a support apparatus for supporting the engine or motor, the support apparatus including a support framework, wherein the entire engine or motor is configured to selectively pivot relative to a portion of the support framework, while the portion of the support framework remains stationary, between a first operative position with the longitudinal axis extending at a first angle, and a second operative position with the longitudinal axis extending at a second angle different to the first angle,
- the support apparatus further including a pivot body pivotably mounting the entire engine or motor to said portion of the support framework, the pivot body including:
- pivot portions for pivotable mounting of the pivot body about a pivot axis to said portion of the support framework;
- a mounting portion to which the engine or motor is secured, the mounting portion surrounding the output shaft;
- and
- a housing portion to accommodate the output shaft exited from the engine or motor, such that the output shaft exited from the engine or motor is enclosed between the pivot body and the engine or motor.
The sawmill as claimed in claim, 4 wherein the first and second operative positions are the only selectable operative positions.
A sawmill, comprising:
- an engine or motor having an output shaft exiting therefrom for driving a sawblade, the output shaft having a longitudinal axis;
- a support apparatus for supporting the engine or motor, the support apparatus including a support framework, the engine or motor being selectively pivotable relative to a portion of the support framework between a first operative position with the longitudinal axis extending at a first angle, and a second operative position with the longitudinal axis extending at a second angle different to the first angle,
- the support apparatus further including a pivot body to pivotably mount the engine or motor to said portion of the support framework, the pivot body including:
- pivot portions for pivotable mounting of the pivot body about a pivot axis to said portion of the support framework;
- a housing portion having a mouth to receive the output shaft of the engine or motor, wherein the housing portion includes a bell-shaped portion and a quasi-cylindrical portion, wherein the quasi-cylindrical portion has a girth that is narrower than a girth of the bell-shaped portion;
- and
- a peripheral mounting portion at the mouth of the housing portion for mounting of the engine or motor such that the exited output shaft is enclosed between the pivot body and the engine or motor.
Dependencies are inferred from the claim text.