An Improved Construction of Drilling Machine.
Year: 1891

page_text: Date of Application, 16th Dec., 1891
Complete Specification Left, 16th Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
An Improved Construction of Drilling Machine.
HENRY PATTMAN TRUEMAN of 51 Havelock Road Handsworth juxta Bir-
mingham in the County of Warwick Engineer do hereby declare the nature of this
invention to be as follows:-
My invention relates to machines for drilling holes, and consists in a novel
arrangement of framing which secures great rigidity and at the same time allows of
rapid adjustment of the various parts to the work to be operated upon.
In carrying my invention into effect I provide a foot plate or base. This said
base is adapted to receive and hold rigidly a pair of round pillars.
At the top of the said pair of round pillars a head piece is secured in such a
manner that the aforesaid pair of pillars are maintained equi-distant from the base
to the head. The said head piece is adapted to carry the driving pullies, and to
support the upper part of the drill spindle.
The lower end of the drill spindle is carried in a sliding bracket, which said
sliding bracket engages with and is clamped on the pair of parallell round pillars
afore described. The drill table is also fixed on the said pair of pillars at any
desired elevation by means of a clamp, or other suitable device.
Brackets or other supports may also be fixed upon, or moved up and down upon
the said pillars. When it is desired for any table, bracket or other support to
swing round on its axis I attach it to the forward pillar only, and secure it in any
desired position by a clamp or screw.
In some cases I employ three parallel pillars instead of two as afore described,
and I then arrange them preferably at the points of a triangle. The sliding
members of the machine in this case would engage with and move upon all three
pillars, but the swinging members would be fixed on one of the pillars only. The
number of the pillars and the disposition of the parts, are arranged to suit the
special purpose for which the machine is intended.
Dated this 16th day of December 1891.
HENRY PATTMAN TRUEMAN.
COMPLETE SPECIFICATION.
An Improved Construction of Drilling Machine.
HENRY PATTMAN TRUEMAN, of 51 Havelock Road, Handsworth juxta Bir-
mingham in the County of Warwick Engineer, 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 :-
According to this my invention I construct a drilling machine by providing two
or more vertical cylindrical rods. At the upper part of these rods I fix a head
bracket, and at the lower part of the said rods I fix a base. The head bracket and
the base bracket are so constructed that the said rods are maintained parallel with
each other from top to base. The drill spindle is carried at one end in the head
bracket and at the other end in a bracket fixed upon the said vertical rods. I fix
the work table upon one rod only, in order that it may be turned round upon its
support, when desired.
Below the work table other brackets may be fixed to suit the kind of work to be
effected by them. Any of the brackets between the base and head bracket can be
made to slide up and down upon the vertical rods, and can be retained in position
by set screws, split bosses and clamp screws, or other well known means.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1. of the accompanying sheet of drawings is a side elevation of a drilling
machine constructed according to this my invention.
Fig. 2. is a plan view of one of the slit brackets.
Fig. 3. shews a bench drill of a similar character.
Fig. 4. shews a drill constructed according to this my invention having three
vertical rods, disposed in a triangular manner.
Similar letters of reference indicate similar parts throughout the drawings which
are made to a scale of one eighth, full size.
A, A Fig. 1, are the vertical cylindrical rods. B, is the head bracket, and C is
the base, the rods A, A', are parallel between B and C. D is the drill bracket
constructed so as to embrace the rods A. A' and capable of sliding upon or being
clamped to the same. A convenient way of clamping these brackets is to slit the
bosses embracing the rods A A' and to compress the said bosses upon A A' by
means of the screws E, one mode of effecting this is clearly shewn in Fig. 2.
The drill table F may also be fixed to and slide upon A A' in the same manner
as described in connection with D. But I prefer to allow it to revolve around the
front rod A. in order that D may swing clear of the drill spindle, and allow of work
being operated upon the bracket G. This bracket is convenient for holding a
centering cup or other attachment. F is a rear extension of the table F, and
abuts against A', when the table is in position under the drill spindle. His a
bracket adapted to carry the driving pulley and belt shifting gear.
Fig. 3, shews
a drill for bench use constructed according to this my invention. C may serve as
base and work table combined while D slides upon the rods A. A', to suit the work
to be operated upon. Fig. 4 shews the triangular arrangement of the pillars A. A'A'
in which case the brackets are connected to and clamped upon one or more of the
pillars as desired.
I am aware that drills have been in use with brackets sliding upon cylindrical
pillars, and also that supplemental pillars have been used as part of the framework
of such drills, but the novelty of this my invention consists in arranging the pillars
so as to serve as a framework in the first place, and also as slide guides for
preserving the alignment of the drill carrying spindle, and the brackets working in
connection with such spindle, in the second place.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1st. The construction of a drilling machine frame consisting of a head bracket,
and a base piece, in combination with two or more cylindrical pillars arranged with
their axes parallel and adapted to receive brackets clamped upon them substantially
as herein described and illustrated.
2nd. The construction of a drilling machine frame as described in combination,
with a drill spindle and brackets, adapted to slide upon or swing round the pillars,
substantially as and for the purpose herein described and illustrated.
Dated this 15th day of September One thousand eight hundred and ninety-
two
HENRY PATTMAN TRUEMAN.