Work holders – Work-underlying support – Gapped support
Reexamination Certificate
2000-10-13
2001-11-27
Hail, III, Joseph J. (Department: 3723)
Work holders
Work-underlying support
Gapped support
C269S287000, C269S098000, C269S095000
Reexamination Certificate
active
06322064
ABSTRACT:
FIELD OF THE INVENTION AND PRIOR ART
The present invention relates to a device for holding wood when cutting with suitable cutting equipment. This cutting equipment normally consists of a saw, for instance a chain saw.
It is desirable to be able to hold wood of various types, such as logs, crooked branches, non-return pallets and the like for cutting with a chain saw in a suitable working height, with as little risk for injuries as possible. Generally the cutting is carried out with the timber lying on the ground or in other devices which are not suitable for the purpose, which involves a great risk for personal injuries and damaged tools. Consequently, there is a great need for a device for holding wood of varying length, thickness and shape in a simple and secure way.
From U.S. Pat. No. 4,718,652 a device according to the preamble of the subsequent claim
1
is already known. With this known device, the pendulum, despite its pivotability, will in practice assume one out of several predetermined pivotal positions determined by the construction of the pendulum, and then primarily by the disposition of the spikes oil the pendulum. This implies that the orientation of a piece of wood which is held by the known device, will vary considerably. Expressed in other words in practice the inclination of the piece of wood will depend on the diameter of the piece of wood and on which of the spikes of the pendulum at present being in engagement with the piece of wood. According to the U.S. patent, the spikes are namely arranged in a row, extending essentially transversely to the pivot axis of the pendulum.
OBJECT OF THE INVENTION
The object of the invention is to develop further, the shaping referred to in the preamble of claim
1
so that the ability of the device to receive and hold a piece of wood will be improved in the sense that a user of the device conveniently can insert pieces of wood into it and get these pieces of wood to assume desired positions or orientations.
SUMMARY OF THE INVENTION
The object presented is, according to the invention, achieved in that the device is designed in accordance with the characteristic of the subsequent claim
1
. As a consequence of the pendulum with its spikes being arranged to assume steplessly varying positions in relation to the upwardly directed spikes of the lower part of the frame, a user of the device will always be able to obtain the desired position and orientation of a piece of wood in the device, for instance a horizontal position of the piece of wood. independent of the diameter or the shape of the piece of wood.
According to a preferred embodiment of the invention, the freely pivoting pendulum is adjustable as to its length between the pivot axis of the pendulum and its spikes. In case of for instance an assortment of particularly thick pieces of wood this length can be reduced.
According to another preferred embodiment, the pendulum is movable upwards, for thicker pieces of wood, by being lifted above a horizontal plane, whereby it is disengaged from a locking shoulder and can be moved sideways in order thereafter to be re-mounted in a lower hole of the pendulum.
For maximum simplicity concerning the handling of pieces of wood, it its preferred that the frame is openly shaped towards one side for allowing insertion of pieces of wood sideways from the open side. During such insertion sideways, the pendulum can be moved away manually or through the effect from the piece of wood or the pendulum can then as well be in a raised position, e.g. by the pendulum resting on the locking shoulder mentioned above.
Furthermore, it is preferred that the pendulum is essentially U-shaped with a base part provided with the spikes and shanks each provided with holes for receiving dowels or pins constituting the pivotal mounting of the pendulum.
According to a further embodiment of the invention, the spikes of both the pendulum and the upper frame part are arranged in rows orientated essentially along the pivotal axis of the pendulum.
Further characteristics of the device according to the invention and advantages in connection thereto will appear from the independent claims and the subsequent description.
REFERENCES:
patent: 654134 (1900-07-01), Clark
patent: 4121814 (1978-10-01), Prior
patent: 4641822 (1987-02-01), Fenerty
patent: 4718652 (1988-01-01), Liebenstein
patent: 4993686 (1991-02-01), Diaz
patent: 5072918 (1991-12-01), Campbell
patent: 5632475 (1997-05-01), McCanse
patent: 157968 (1987-08-01), None
Hail III Joseph J.
Wilson Lee
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