Woodworking – Work guide – Work held by corner or diagonal work
Patent
1994-09-29
1995-09-26
Bray, W. Donald
Woodworking
Work guide
Work held by corner or diagonal work
144249B, 144253R, 144253J, 83444, 83447, 83450, B27B 3100, B27C 502
Patent
active
054527520
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a pressure device for wood-milling machines with an arm, attached to a bearing support, that can be pivoted around a horizontal axis and carries both a pressure shoe, which acts upon the top of the work piece and is vertically and horizontally adjustable, and a vertically adjustable guidance element, which presses the work piece horizontally against a stop and can be pivoted around a vertical axis.
2. Discussion of the Prior Art
Pressure devices of this type are known, for example, from the pamphlet entitled "SUVA Throat Protection Apparatus"("SUVA Kehlschutzapparat") issued by the Swiss Accident Insurance Company (SUVA) in February 1966. Here both the guidance element and the pressure shoe are attached to guide rods, which can be moved vertically in bearing blocks held on the arm. Clamping screws, which are screwed into each bearing block and act against rods attached to the arm, serve to lock the guidance element and the pressure shoe into the set vertical position. In addition, there are other clamping screws with which the selected position of the rods in the longitudinal direction of the arm can be fixed. And in order to set the angular position of the guidance element, there is an additional clamping screw via which the rods are attached to the arm, as a result of which an adjustment in the angle of the guidance element also leads to a turning of the pressure shoe.
SUMMARY OF THE INVENTION
The object underlying the invention is to provide a pressure device for woo-milling machines which, in comparison to the described prior art, has a much simpler design and requires significantly fewer clamping devices.
According to the invention, this object is attained in a pressure device of the type outlined above by virtue of the fact that the pressure shoe and the guidance element are attached to an arm that is constructed as a rod and runs, in such a way that the arm can be moved in a longitudinal direction, in a cylinder, which is attached pivotally to the bearing support, while single clamping rings screwed onto external threads are provided in order to arrest, respectively, the arm in its set longitudinal position, the pressure shoe in its set vertical and horizontal position, and the guidance element set and swung in the horizontal direction.
The invention provides a device that is much easier to grasp, the significantly simpler design of which permits simplified installation and easier operation. An essential fact here is that single clamping rings suffice, in each respective case, to set and arrest as needed the position of each settable part of the pressure device (the arm, the pressure shoe and the guidance element), whereas in known pressure devices a large number of clamping screws are needed, which have only one function each and entail higher operational expenditure.
In further embodiment of the invention, the pressure shoe and/or the guidance element is/are located on the lower end of a rectangular frame that is installed between two vertical guidance plates, which can be moved relative to one another in the longitudinal direction of the arm, in such a way that the height of the frame can be adjusted and the frame can be clamped by means of the clamping ring.
So that the pressure shoe can be arrested in the longitudinal direction of the arm and/or the arm can be arrested in its longitudinal direction, there are, according to another feature of the invention, wedge elements that are set into the radial recesses of a threaded bushing, which is placed coaxially on the arm and bears the external thread, and that can by means of the clamping ring be moved radially against the outer side of the arm on one slanted guide surface each.
It is especially advantageous to install the pressure shoe on its frame in such a way that the pressure shoe can be moved upward against an elastic force, so that the pressure shoe does not have to be resilient itself and will nonetheless always exert the necessary compressive force on the wo
REFERENCES:
patent: 4531438 (1985-07-01), Poiez
patent: 4662413 (1987-05-01), Bater
patent: 4715089 (1987-12-01), Schema
patent: 5301726 (1994-04-01), Wojcik
patent: 5317944 (1994-06-01), Hewitt
LandOfFree
Pressure device for wood-milling machines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure device for wood-milling machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure device for wood-milling machines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1547645