Improvements in Multiple Drilling Machines.
Year: 1890

page_text: Date of Application, 29th Aug., 1890
Complete Specification Left, 27th May, 1891-Accepted, 27th June, 1891
TROYIRIONAL DI DUIFICATION.
Improvements in Multiple Drilling Machines.
I, CHARLES HERBERT SCOTT, of High Orchard Iron Works, Gloucester, in
the County of Gloucester, Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to enable a multiple drilling machine to be readily
adapted to drill holes at different distances apart according to requirement from
time to time as for example when it is desired to drill sometimes at one distance
apart sometimes at another holes in short pieces of angle iron. For this purpose
double Hooke's joints are interposed between the driving gear and the drill sockets,
to which therefore rotary motion is imparted through the said joints; and the
spindles or parts in which the said sockets are formed are arranged to work in holes or
bearings formed in removable plates or bosses adapted to be readily secured to and
removed from a fixed plate of the machine, and which removable plate or bosses
guides or guide and takes or take the pressure of the drills. The work to be
drilled is fixed to a movable table in front of the drills which is provided with a
suitable feed motion. When it is desired to alter the distances apart of the drills
to suit fresh work this can be effected, when using plates each having in it several
holes or bearings, by attaching a new plate to take the thrust of the drill sockets,
this plate being provided with holes or bearings having their centres arranged to
suit the new work to be done; or if, according to the modification above referred
to, cach drill has a separate plate or boss through which the drill spindle works;
these plates or bosses are bolted or otherwise attached to a fixed plate in such
a manner that their positions, and consequently the positions of the centres of the
drills, can be varied as required.
The use for driving the respective drill spindles of double Hooke's joints as
described enables the necessary allowance to be made for variations in the distances
apart of the centres of the drills.
1
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Multiple Drilling Machines.
I, CHARLES HERBERT SCOTT, of High Orchard Iron Works, Gloucester, in
the County of Gloucester, Engineer, do hereby declare the nature of this inven-
tion. and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
The object of this invention is to enable a multiple drilling machine to be readily
adapted to drill holes at different distances apart according to requirement from
time to time, as for example when it is desired to drill sometimes at one distance.
apart, sometimes at another, holes in short pieces of angle iron. For this purpose
universal joints such as double Hooke's joints, or flexible shafts, are interposed
between the driving gear and the drill sockets, to which therefore rotary motion is
imparted through the said joints or shafts; and the spindles or parts in which the
said sockets are formed are arranged to work in holes or bearings formed in a
removable plate or bosses adapted to be readily secured to and removed from a
fixed face plate of the machine, and which removable plate or bosses, guides or
guide and takes or take the pressure of the drills. The work to be drilled is fixed

page_text: to a movable table or rest arranged in front of the drills and provided with a
suitable feed motion. When it is desired to alter the distances apart of the drills
to suit fresh work this can be effected, when using plates each having in it several
holes or bearings, by attaching a new plate to take the thrust of the drill sockets,
this plate being provided with holes or bearings having their centres arranged to
suit the new work to be done, or if according to the modification above referred to
cach drill has a separate plate or boss through which the drill spindle works; these
plates or bosses are bolted or otherwise attached to a fixed face plate in such a
manner that their positions, and consequently the positions of the centres of the
drills, can be varied as required.
The use for driving the respective drill spindles of universal joints such as
double Hooke's joints or flexible shafts as described, enables the necessary
allowance to be made for variations in the distances apart of the centres of the
drills.
In the accompanying drawings.
Figs. 1, 2, and 3 are respectively a side elevation, a plan and a transverse
section of a multiple drilling machine constructed according to this invention.
Figs. 4 to 7 inclusive are detail views hereinafter referred to.
A is the frame of the machine, provided with a rest for carrying the object to
be drilled, which in the example shown is angle iron knee B'. This rest is capable of
adjustment transversely to the machine for the purpose of setting the work, and is
fed up to the drills in the ordinary manner by any suitable means as for example
by the feed screw E. The frame A. of the machine shown in Figs. 1, 2, and 3,
carries a face plate C which may advantageously be made adjustable in a vertical
direction, it may be by a vertical screw Coperated by a hand wheel C2 and bevel
gearing C. To the face plate are attached suitable bosses or brackets D, D which
carry the drill sockets F F.
One of these brackets is shown separately in end elevation and central section
in Figs. 4 and 5 respectively. The spindles or parts in which the drill sockets F
are formed, are each prolonged backwards through an opening in the face plate C
and are connected to and driven by the driving gear at G by means of universal
joints as for example Hooke's joints as shewn at H, H; or if preferred by flexible
shafts. By these arrangements the bosses or brackets D, D in which revolve the
spindles or parts of the drill sockets F, F carrying the drills K, K, can be moved
and set by means of a templet or other suitable means to the position required for
the work to be done and can then be clamped to the face plate C by suitable means
such as by bolts as shewn, that extend through slots D¹ in the bosses or brackets
and are provided with nuts. The objects to be drilled being placed in succession on
the rest B, which is provided with suitable clamps B' to hold them, can then be
drilled so as to be interchangeable in the same manner as if drilled through a
templet as is ordinarily done.
If desired the face plate C and bosses or brackets D, D can be made in one piece
as is shewn at L, in Figs. 6 and 7 which are respectively a cross section and an end
elevation. This arrangement is suitable for cases in which a great number of similar
pieces of work are to be operated on.
Where objects of large size are to be operated on, or for other reasons, the part
of the frame A carrying the drills K and all the gear connected to and driving
them can be arranged to slide on the lower part or bed of the machine, and be fed
up to the work to be operated on, by the feed screw E or by other suitable
means, the rest B carrying the work to be operated on being in this case
stationary. This modification is obviously more suitable for use where large heavy
pieces, such as long girders, have to be drilled.
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 a multiple drilling machine, mounting the spindles or parts in which the

page_text: drill sockets are formed, in bosses or brackets D, D capable of being clamped in
different positions to suit the work to be done, and imparting rotary motion to the
said drill sockets substantially as and by the means hereinbefore described for the
purpose set forth.
2. The face plate with bosses or brackets constructed as shewn in and described
with reference to Figs. 6 and 7 of the drawings for the purpose set forth.
3. The construction and arrangement of parts constituting the improved multiple
drilling machine constructed and operating as herein before described with reference
to and shown in Figs. 1 to 5 inclusive of the drawing annexed or modified according
to Figs. 6 and 7.
1001
CHARLES HERBERT SCOTT.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C.