An Improved Drill Stock or Support.
Year: 1893

page_text: Date of Application, 29th Sept., 1893-Accepted, 25th Nov., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by JOHANNES LEEMANN, of 43, Leonhardt Strasse,
Saint Gallen, Switzerland, Merchant.]
An Improved Drill Stock or Support.
I, ERNEST DE PASS, of 78, Fleet Street, in the City of London, Fellow, of
the Chartered Institute of Patent Agents, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the accompanying drawings and to the letters and figures marked thereon, that
is to say:
This invention relates to an improved drill stock or support, and has for its
object to so construct said stock or support as to allow of the drill, or drills,
mounted thereon, to be fixed and operated in any required position and at any
desired angle.
The improved stock or support consists of a hollow pillar provided with a clamp
by means of which it is secured to the work bench, or other suitable place. In
this pillar is an adjustable shank, the head of which is formed with a serrated disc
or circular plate adapted to engage with another serrated disc or plate provided
with a split collar or bearing. Through this collar passes an adjustable pin or rod
carrying, at one end, a serrated disc or plate adapted to engage in a like serrated
disc or plate which is also provided with a split collar or bearing through which
passes a second pin or rod, one end of which is furnished with a serrated disc
engaging with another serrated disc forming part of a screw nut for receiving the
feed screw of a ratchet brace or drilling apparatus. On the other end of the
pin or rod carrying the ratchet brace, there may be mounted a quick speed drill,
and one of said drills may be operated in one direction while the other is operated
in another direction. The discs being adjustable, as well as the pins or rods
passing through the split collars or bearings, it is only necessary to set these in
the desired position or angle to have the drills in the position necessary for
operating upon the work.
And in order that the invention may be readily understood, I will describe the
same fully with reference to the accompanying drawings, in which :-
Fig. 1 is a front elevation of the improved stock or support, having a drill
mounted thereon, and showing in dotted lines some of the various positions it may
be made to assume.
Fig. 2 is a side view thereof, and
Fig. 3 is a front elevation showing two kinds of drilling apparatus, viz. :—a
ratchet brace and a quick speed drill, mounted on the same pin or rod.
Figs. 4 and 5 are respectively front and side views of one of the serrated discs
or plates.
A is the hollow support or pillar, provided with a clamping device B, for
securing it to the work bench Z, or other place. Within the pillar is a shank a
capable of being raised or lowered, and retained in position by a tightening
device b. The head of this shank a terminates in a disc or circular plate c, having
on its inner face serrations or radial grooves d (Figs. 4 and 5), adapted to engage
in a second disc c¹ provided with a clamping device consisting of a split collare,
forming a bearing for the reception and adjustment of the pin or rod f, which is
secured in position by a tightening screw e passing through lugs e², e³, formed on
the said collar. The two discs c and d are locked together by means of a bolt g
and nut g', and the serrations or radial grooves prevent any displacement or
movement of the discs when locked in position. At one end, the pin or rod fis
likewise furnished with a serrated disc similar to c, and is also retained by a

page_text: nut and bolt g³. This disc engages with a correspondingly serrated disc, also
having a split collar (and tightening screw e) forming a bearing to receive an
adjustable rod or pin h, also provided with a serrated disc which engages with
another serrated disc c. This disc c has formed on it a screw nut or collar i,
which receives the screw j, forming part of the ratchet brace C, and the screw j is
provided with a hand-wheel k for the purpose of feeding the drill up to the work.
The discs c. c, are secured together by the nut g and bolt g.
D (Fig. 3) is a quick speed drill provided with a clamping device l, similar to
those already described, and by means of which said drill is mounted and fixed in
position upon the other or free end of the pin or rod / carrying the ratchet brace
or drill C.
When it is desired to use the ratchet brace or drill C, in either of the positions
shown by the dotted lines in Fig. 1, the nuts 9', g, and g, upon the bolts
I, g³,
and 9, securing the pairs of serrated discs ; c, cc, c; in place, are
unscrewed by means of a spanner, and the serrated discs, together with their pins
or rods and h, are so manipulated as to be caused to assume either of such
positions; the discs are then locked together and the drill is ready for use.
Thus, by means of the combination and arrangement of the parts as above
described, it will be obvious that the drill, or drills, may be caused to assume any
position relatively to the pillar or support, and that either the ratchet brace C, or
the quick speed drill D, may be employed, as found necessary; the two positions
shown in the dotted lines in Fig. 1 being only by way of illustration.
In some instances the pins or rods may be formed hollow, so as to reduce the
weight of the apparatus.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In drilling apparatus, the combination with the hollow pillar or support
thereof, of the shank (a) having a serrated disc (c) engaging with a corre-
spondingly serrated disc (c) provided with a clamping device; the adjustable pin
or rod (f) passing through said clamping device and carrying a serrated disc (c)
adapted to engage with a like serrated disc (c³) also provided with a clamping
device; and the adjustable pin or rod (h) passing through a clamping device and
carrying a serrated disc (c) adapted to engage with a serrated disc (c) on which
is a screw ut receiving the feed-screw of a ratchet-brace or drill, together with
means for tightening up said clamping devices and discs, the ratchet brace and
the quick speed drill being mounted upon the adjustable pin (4), substantially as
and for the purposes described.
2. The improved drill stock or support, whereby a drill, or drills, may be
secured and operated in any required position, or at any desired angle, relatively
to the pillar of the stock or support, substantially as described and shown with
reference to the annexed drawings.
Dated this 29th day of September 1893.