Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Having tool-opposing – work-engaging surface
Reexamination Certificate
2000-04-03
2001-10-30
Bishop, Steven C. (Department: 3722)
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Having tool-opposing, work-engaging surface
C408S099000, C408S103000, C408S111000, C408S236000
Reexamination Certificate
active
06309148
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a column positioning device for a drill press. The device comprises a post received in a column of the machine and a positioning pin extends from a top of a base. The column can be rotated 180 degrees and positioned by inserting the positioning pin in a passage in the column.
BACKGROUND OF THE INVENTION
A conventional drill press generally includes a column connected to a base and a movable box is connected to the column. A motor is connected to the movable box and a chuck is connected to the motor so that the chuck is rotated at a high speed by the motor. A toothed rack is connected to the column and the movable box is movable on the rack by pulling a handle connected to the box. An object to be drilled is positioned on the base and pressed by a pressing member connected to the column. Nevertheless, when the object to be drilled is so tall that the chuck cannot be raised to a enough height, the operator will rotate the column together with the motor, the chuck and the pressing member 180 degrees so that the object can be placed on a lower surface other than the base. It is difficult to rotate the column on the base by one operator because the column is fixed on the base by at least four bolts and the center of weight of the column is too high because the motor.
The present invention intends to provide a column positioning device for a drill press wherein the column can be positioned by a pin inserting into one of two positioning passages in the column. When the column is rotated 180 degrees, the operator simply inserts the pin into the other positioning passage.
SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, a column positioning device for a drill press comprises a base with a post and a positioning pin respectively extending from a top of the base. A hollow column has a central passage for receiving the post, and two positioning passages defined longitudinally through the column. The positioning pin is engaged one of the positioning passages and a motor is movably connected to and along the column. A frame is connected a side of the column and a pusher is connected to the frame. A rod extends from the pusher and a pressing member is movably mounted to the rod.
The object of the present invention is to provide a column positioning device for a drill press, wherein the column can be rotated 180 degrees and is easily positioned by engaging a pin on the base with one of two positioning passages.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, several embodiments in accordance with the present invention.
REFERENCES:
patent: 2269727 (1942-01-01), Mead
patent: 3185470 (1965-05-01), Zitner
patent: 4468159 (1984-08-01), Oster
patent: 4799835 (1989-01-01), Doi
patent: 5102270 (1992-04-01), Warren
patent: 5318392 (1994-06-01), Svetlik et al.
Baxley Charles E.
Bishop Steven C.
Palmgren Industrial Corp. Ltd.
LandOfFree
Column positioning device for a drill press does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Column positioning device for a drill press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Column positioning device for a drill press will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2595029