Positive feed drill with rapid advance
AssigneeZephyr Manufacturing Co., Inc.
InventorPierre G. Vindez
Life of this patent
Estimating the term…
Abstract
A portable positive feed drilling device in which there is a spindle carrying a cutting tool with means for rotating the spindle and the cutting tool in order to perform a cutting operation on the work, and in which there is a normal speed spindle feed means and a rapid advance spindle feed means, either of which may be caused to feed said spindle toward said work.
Claims12
A positive feed drill, the combination including:
- (a) a spindle adapted to carry a cutting tool;
- (b) spindle rotating means for rotating said spindle for causing cutting action when said spindle is moved toward the work;
- (c) spindle feed means for feeding said spindle;
- (d) spindle feed drive means for operating said spindle feed means at a normal rate;
- (e) rapid advance drive means for operating said spindle feed means for feeding said spindle toward said work at a rapid advance speed;
- (f) manually operable means for connecting said spindle feed drive means to said advance speed drive means;
- and
- (g) means for locking said rapid advance drive means from operation.
A combination as defined in claim 7 in which there is a manually operable means for disconnecting said rapid advance speed drive means from said spindle feed means.
A positive feed drill, the combination of:
- (a) a threaded spindle adapted to carry a cutting tool;
- (b) spindle rotating means having a spindle rotating gear through which said spindle extends for rotating said spindle in a single direction;
- (c) spindle feed means having a spindle feed gear through which said spindle extends and which is threadedly engageable with said spindle for moving said spindle longitudinally;
- (d) a motor to which said spindle rotating means is connected for rotating said spindle in a single direction;
- (e) advance speed drive means for operating said spindle feed means whereby said spindle feed gear may be driven at an advanced speed;
- (f) connecting means operable independent of longitudinal movement of said spindle feed means for connecting said spindle feed means to be driven either by said spindle rotating means or said advance speed drive means;
- and
- (g) means for locking said advance speed gear means from operation.
A positive feed drill, the combination of:
- (a) a threaded spindle adapted to carry a cutting tool;
- (b) a spindle rotating gear through which said spindle extends, for rotating said spindle in a single direction;
- (c) a spindle feed means including a spindle feed gear through which said spindle extends and which is threadedly engageable with said spindle for moving said spindle longitudinally;
- (d) gear means connecting said spindle rotating gear to a motor for rotating said spindle in a single direction;
- (e) advance speed drive means for rotating said spindle feed gear whereby said spindle feed gear may be driven at an advanced speed;
- (f) a connecting gear connected to drive said spindle feed means, said connecting drive gear having two positions, one position in which it is adapted to be driven by said advance speed drive means and the other position in which it is adapted to be driven by said gear means connecting said spindle rotating gear to a motor;
- and
- (g) manually operable means for moving said connecting gear into either of said positions.
Dependencies are inferred from the claim text.