Improvements in Combined Drilling and Screw Tapping Machines.
Year: 1887

page_text: Date of Application. 30th Nov., 1887
RES
Complete Specification Left, 29th Aug., 1888
Complete Specification Accepted. 23rd Nov., 1888
PROVISIONAL SPECIFICATION.
Improvements in Combined Drilling and Screw Tapping Machines.
I WILLIAM BARRACLOUGH of Providence Foundry, Stanningley in the County of
York Ironfounder do hereby declare the nature of this invention to be as follows:-
It relates, chiefly, to machines for drilling holes in metal (articles or) castings for
Cooking Ranges and Stoves and threading any such holes for the reception of screws,
the motive power for operating such drilling appliances being communicated by
rapid revolving machinery and the object of my invention is to adapt such machines
for drilling (and "tapping") holes in any required number of corresponding metal
castings (or articles) with unvarying precision or exactness both as to their size and
situation.
I effect this object by the mechanism which is illustrated in the following diagrams
in which
Fig. is a front elevation of the elevating table for my improved drilling
machine.
Fig. 2 is a perspective view of my improved drilling machine with double
drilling mechanism.
Fig. 3 is an end elevation of the said elevating table.
Fig. 4 is a plan of the said elevating table top.
Figs. 5, 6, 7 and 8 represent holders and seats for use in combination with my
improved drilling machine.
The legs A, A, and the girder B in Fig. 1 represent the primary members of my
drilling machine table which is provided with a duplicate top C, capable of being
raised or lowered by means of screw appliances such as those represented by the
Screw D which passes through the staple E, bolted to the flanges F, F, of the
barrel G, within which barrel the ram H, is raised or lowered according as the
screw is revolved one way or the other. The rods J, J, act as guides to the
duplicate top C, in its vertical motions.
The drill frames K, K, Figure 2, are united to the girder B, as shewn in
Figure 1, and support the spindles and other mechanism of my improved drilling
machine.

page_text: Within each of the hollow heads K' and K² I insert a tubular spindle L provided
with one or more pulleys M and N for revolving the same by means of the belt P
communicating with rapid revolving machinery.
Each spindle L, is provided in any convenient part thereof with fast collars Q, Q,
and a loose collar R, between them for the purpose of projecting the spindle back and
forward laterally by means of the lever motion represented by the upright and
horizontal arms S, S2 and S3 pivotted at T, to the spindle frame K, and at T
to the table leg A.
The forward impulse of the drilling spindle is imparted by pressure of the
workman's foot upon the end (S) of the lever S³, and the backward motion is
imparted thereto by the counterpoise weight Se as the pressure is removed
from $4.
Drills of any required length and character may be inserted in the hollow spindles
at U, U, Figure 2.
In Figures 2 and 3 the duplicate and adjustable table top is represented as
containing a number of parallel grooves upon its upper surface.
The vertical rod V Figure 2, and its arm V2 are for operating a reversing motion
associated with overhead driving" mechanism.
Similar mechanism to that just described has been commonly employed in
combination with machines for drilling metals and other substances both for
horizontal and vertical drilling. It will therefore be understood that .1. do not claim
such mechanism broadly as my invention.
Upon the frame K or conveniently adjacent to the drill W, I attach a holder X
containing cramping, eccentric, cam or other locking mechanism, for the purpose of fixing
and retaining in a rigid position, any article which requires drilling, such holder
being provided with a projecting or other me aber such as X, X³ or any such like
appliance, for the said purpose.
1. also provide templates, frames, saddles, seats, or guide frames for use in
combination with the grooved duplicate table top for maintaining in unvarying
positions during the process of drilling any metal articles which require to be drilled
with plain or screwed holes and with unvarying exactness, both in the size and
position of the holes, and these templates, frames, saddles, seats or guides are made
adjustable to any required position upon the table by means of the holes Z, figure 4,
and corresponding holes in the said templates (and such like appliances) together with
uniting bolts or pins inserted within any of such holes for the purpose of preventing
the accidental displacement of such" templates or seats during the process of
drilling.
The said templates and holders are designed for use either separately or in
combination according to the form or requirements of the articles to be drilled.
This improved drilling machine is designed only for use in circumstances where
numerous articles of the same size and kind require to be drilled at one time
and with holes of precisely the same kind and in precisely the same positions. This
being a requirement often experienced in the fitting together of certain kinds of
stoves and ranges.
Although in this description I have dealt only with a machine for horizontal
drilling my improvements are designed equally for application to vertical drilling
machines and would only require such variation in the method and
attaching them to the adjustable table or adjacently to the drill as my improved
appliances must always be subject to.
means
01
Dated this. 29th day of November 1887.
JOSEPH LOCKWOOD,
Langside, Glasgow,
Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Combined Drilling and Screw Tapping Machines.
I, WILLIAM BARRACLOUGH of Providence Foundry, Stanningly, in the county of
York Ironfounder, 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 :—
It relates chiefly to machines for drilling holes in metal (articles or) castings for
cooking ranges and stoves and threading any such holes for the reception of screws
the motive power for operating such drilling appliances being communicated by
rapid revolving machinery and the object of my invention is to adapt such machines
for drilling (and tapping) holes in any required number of corresponding metal
castings (or articles) with unvarying precision or exactness both as to their
size and situation.
I effect these objects by means of the mechanism illustrated in the diagrams which
accompanied the provisional specification.
Fig. 1 is a front elevation of the elevating table for my improved drilling
machine.
Fig. 2 is a perspective view of my improved drilling machine with double
drilling mechanism.
Fig. 3 is an end elevation of the said elevating table.
Fig. 4 is a plan of the said elevating table top.
The legs A, A, and the girder B in Fig. 1 represent the primary members of my
drilling machine table which is provided with a duplicate top C, capable of being
raised or lowered by means of screw appliances such as those represented by the
screw D, which passes through the staple E, bolted to the flanges F, F, of the barrel G
within which barrel the rain H, is raised or lowered according as the screw is
revolved one way or the other. The rods J, J, act as guides to the duplicate top C,
in its vertical motion.
The drill frames K, K, Figure 2, are united to the table as shewn in Figure or in
any other convenient manner and support the spindles and other mechanism of my
improved drilling machine.
Within each of the hollow heads K' and K² I insert a tubular spindle L provided
with one or more pulleys M and N for revolving the same by means of the belt P
communicating with rapid revolving machinery.
Each spindle L, is provided in any convenient part thereof with fast collars such
as Q, Q, and a loose collar R, placed between them for the purpose of projecting the
spindle back and forward laterally by means of the lever motion represented by the
upright and horizontal arms S, S and S3 pivotted at T, to the spindle frame K, and
at T to the table leg A.
The forward impulse of the drilling spindle is imparted by pressure of the
workmans foot upon the end, (S) of the lever S³, and the backward motion is
imparted thereto by the counterpoise weight So as the pressure is removed
from S¹.

page_text: Drills of any required length and character may be inserted in the hollow spindles
at U, U, figure 2.
In figures 2 and 3 the duplicate and adjustable table top is represented as
containing a number of parallel grooves upon its upper surface.
The vertical rod V figure 2 and its arm V2 are for operating the "fork" of a
reversing motion associated with overhead "driving" mechanism, which reversing
motion consists of duplicate sets of fast and loose pulleys operated alternately, through
the agency of twisted and straight driving belts. The twisted belt runs loosely upon
loose pulleys when the straight belt is used for driving and the straight belt is made
(by the fork") to run upon loose pulleys when the twisted belt is used
for driving.
Similar mechanism to that just described has been commonly employed in
combination with machines for drilling metals and other substances both for
horizontal and vertical drilling. It will therefore he understood that I do not claim
such mechanism as my invention.
To the frame K conveniently near to the drill W, I attach a holder X containing
cramping or other locking mechanism for the purpose of holding in a rigid position
any article during the process of drilling, such holder being provided with a
projecting or other member such as X, X³ or any such like appliance for the
said purpose.
also provide templates, frames and guides for use in combination with the
grooved duplicate table top C for maintaining in unvarying positions during the
process of drilling the various stock sizes and kinds of metal articles which require to
he drilled (in quantities) with plain or screwed holes and with unvarying exactness
both in the size and position of the holes and these templates frames or guides are
made adjustable to any required position upon the table by means of the holes Z,
figure 4, and the corresponding holes in the said templates and such like appliances
together with uniting bolts or pins inserted within any of such holes for the purpose
of preventing the accidental displacement of such templates during the process of
drilling.
The said templates and holders are designed for use either separately or jointly
according to the requirements of the articles to be drilled.
This improved drilling machine is designed only for use in circumstances where
numerous and large quantities of articles of the same size and kind require to be
drilled at one time with holes precisely the same in kind and in precisely the same
positions. This being especially experienced in the fitting together of certain kinds
of stoves and cooking ranges.
The cramping, locking, holding, guiding and rigidly adjusting frames, templates
and other mechanism comprised in my invention will vary according to the shape and
dimensions of the articles to be drilled so that it will be understood that I do not limit
my invention to the few and particular forms of them shewn and described herein
but employ these merely as examples to explain the general scope of my
invention.
The metal plates which are marked X, figures 2 and 5 X and X figures 6 and 7
are fitted upon the upper surface of the table top, marked C, and the holes (Z) in the
table top correspond in size and distance, one from another with those contained in
the plates XX and X so that the said plates may be adjusted either to the right or
left side of the drill and more or less distant from it and permanently fixed in such
positions by pins, cotters, or screw bolts inserted within any of the said holes and,
when necessary, held tightly and rigidly in such positions by thumb screws or nuts
associated (above or below the table) with the screw bolts passing through the said
holes and templates or through guide plates which flank the templates on any or every
side thereof, and keep the templates X X or X in their required positions without of
necessity bolting the templates themselves to the table.
The templates X, (X or X) being fitted in the required position relative to the
drill, the article to be drilled is then placed within it and steadied or held by the hand
of the attendant whilst the machine is put in motion for drilling.

page_text: The mechanism which is lettered X, X, X, X, X, X, X, X", X, and X", is
associated with the spindle frame of the drilling machine and not with the table top,
in which represents projecting flanges connected with the spindle frame, which
are furnished with holes for the purpose of fitting thereto the brackets X and such
steadying arms as X³, and X, which are pivotted to the flanges X1, by a pin or bolt
such as X, and are pressed into and retained rigidly in their required positions by a
cam lever X", fitted in and between the brackets X.
When drilling holes in, or in connection with, thin metal plates which require to be
held in vertical positions and prevented from moving to the right or left sides a split
ring or collar such as the one shewn upon X³, or any equivalent, forked claw is
employed, assisted by the hand of the workman.
In figure 5 and its several parts I have shewn another cramping holder, X², fitted
with moveable jaws X, which are opened and closed like the jaws of a vice by means
of a right and left screw rod XP, and its handle. The screw rod X' being inserted
within and through the hole provided for it in the arm X', the jaws X are adjusted
upon it as shewn in figures 2 and 5, and the bar X" inserted through each jaw and
the arm X the handle is then fitted upon the screw rod X and the jaws are opened
or closed according as the handle is revolved one way or the other and clasps or
releases the article it is intended to control. The cam lever X", is also used
in connection with the vice like cramp X2, as well as with the arm X³. In drilling
certain classes of articles the table templates or frames are sufficient to retain them
in their positions without the aid of the mechanism marked X2 or X³ at other times
the holders X (or X³) may be used alone and not in conjunction with the table
frames whilst for other classes of articles the table frames and spindle cramps are
required in combination. In some classes of articles which require drilling it is
necessary to employ the opening and closing jaws X or equivalent mechanism united
to the table frames, for gripping the lower part of the article, instead of or in
addition to, the top of it. The pin, X12, may be inserted in any of the holes contained
in the flanges X and thereby regulate the distance to which the arms X³ or X', are
projected.
I am not aware that any mechanism whatever has ever been invented for
combination with the table or spindle frame of a drilling machine for holding articles
in rigid positions whilst they are being drilled. It will therefore be understood that
I do not limit my invention to the few specific forms which I have found it most
convenient to describe and illustrate herein but claim for my invention a much
broader platform embracing any and every variety of mechanism which may be
found expedient and useful in such combinations as herein described and for the
purposes which I have explained.
Although in this description I have dealt only with a machine for horizontal
drilling my improvements are designed equally for application to vertical drilling
machines and would only require such variation in the method and means of attaching
them to the adjustable table or adjacently to the drill as my improved appliances
must always be subject io, both in their size, character, position and modes of
attachment.
When combining my improvements with a vertical drilling machine in contra-
distinction to the horizontal one shewn in the illustrations herewith it may be
explained that the table may be of any shape and attached and elevated in any
convenient and suitable manner so that it may be revolved on an axis in addition to
being moved in a radial manner as well as vertically, provided that every such
variation in position is under control and capable of being made permanent
and rigid either by the agency of screw toothed or other mechanism.
I am aware that drilling machines have frequently been combined with elevating
and adjustable tables and that such tables had grooves o: ribs upon their surfaces for
various purposes such as, adjusting and fixing in rigid positions dies and other
objects clearance of borings &c. I am also aware that such machines have been
made in combination with metal tables which had perforated tops the holes being of
various shapes :-round, square, elliptical &c.—the holes and grooves being

page_text: principally for the purpose of clearing away the borings or other debris resulting
from the drilling operations.
I am aware, also that combined drilling and tapping machines have been made
with reversing gear similar to that which I employ, and that such machinery has
been employed in connection with apparatuses for drilling and tapping holes in metal
articles of various kinds. It will therefore be readily understood that I do not claim
such combinations as my invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed 1 declare that what
I claim is
1st. In a drilling machine, the combination therewith of mechanism for retaining
articles in an immoveable position during the period when they are being drilled,
all substantially as herein described, as herein shewn, and for the purposes herein
specified.
2nd. In a drilling machine the combination with its table of mechanism for
retaining articles in an immoveable position during the period when they are being
drilled, all substantially as herein described, as herein shewn and for the purposes
herein specified.
3rd. In a drilling machine, the combination with its spindle supports, of mechanism
for retaining articles in an immmoveable position during the period when they are
being drilled, all substantially as herein described, as herein shewn and for the
purposes herein specified.