Improvements in or Relating to Drilling, Tapping and like Machines,
Year: 1898

page_text: Improvements in or Relating to Drilling, Tapping and like Machines,
I, PAUL LANGBEIN, of Saronno, in the Kingdom of Italy, Manager, do hereby
declare the nature of this invention to be as follows;-
This invention relates to improvements in drilling, tapping and like machines
by means of which the operating tool can always be brought into the required
position, whatever that of the surface to be worked upon may be.
A convenient form of the machine will now be described.
A hollow pillar having two longitudinal slots which are diametrically opposite
each other, is provided at its lower end with a hollow extension which fits in a
cup forming part of the bed plate. The lower part of pillar has cast on it a
flange to which is attached a crown having cut on it helical teeth so as to form
a worm wheel gearing with a worn.
When the latter is rotated the whole machine can turn around its vertical
axis. The shaft of which worm forms part rests in bearings fixed to a common base
plate and is actuated by means of bevel wheels rotated by a hand wheel on a
vertical spindle. The bevel wheel of this spindle is so arranged that it cannot
move in a vertical direction while the spindle can slide through it. The base
plate can turn horizontally around a vertical pin provided under one of the
bearings. When the screw meshes with the worm wheel the spindle passes
through a suitable hole provided in the bed plate. The spindle which is capable
of moving up and down vertically can be lifted out of the hole, so that when it
is desired to put the worm and worm wheel out of gear the base plate is turned
outwards around its pin.
The foot of the hollow pillar is fitted with a socket provided internally with
a screw thread and acting as a fixed nut for the vertical screw spindle. The
upper end of the latter passes through a cross piece which bears against a
shoulder and carries a transverse support which can slide up and down on the
pillar. The upper extremity of the vertical spindle is fitted with a bevel wheel
meshing with a bevel wheel on a horizontal spindle. On rotating the latter
by means of a hand wheel a rotary motion is imparted to the bevel wheel and
consequently to the vertical spindle which screws itself either upwards or down-
wards through the lower socket according to the direction of its rotation, the
transverse support moving accordingly either upwards or downwards on the
pillar. The horizontal spindle is provided with a longitudinal groove which
fits over a feather in the hub of its bevel wheel. At one of its outer ends and
just in front of hand wheel the horizontal spindle is supported by a bracket
attached to a ring capable of sliding on a radial arm or hollow shaft and fitted
with a projection entering a groove on said arm.
The transverse support carries the hollow radial arm which can slide therein
and is fitted with a central shaft imparting motion to the tool and resting in
bearings at both ends of the radial arm. On this shaft is a bevel wheel the
bearing of which is fitted in a bracket forming part of a cross piece attached to

page_text: the transverse support. A rotary motion is imparted by the bevel wheel to the
spindle by means of a feather fitting in a longitudinal groove on said spindle.
The cross piece forms also a bearing for an upper vertical spindle, the lower end
of which is fitted with a bevel wheel gearing with the said bevel wheel. This
vertical spindle is provided with a longitudinal groove fitted over a feather in
the hub of a bevel wheel fitted in the top of the pillar and imparting motion to
said spindle. The horizontal shifting of hollow arm within transverse support
may be effected by hand..
The rotary motion imparted by suitable gearing to the upper vertical spindle
and from the latter to the cross spindle. and bevel wheel keyed thereon inside the
drill head actuates through another bevel wheel the drill spindle and eventually
through a third bevel wheel, another drill spindle at right angles, the con-
nection between the bevel wheel and spindle being effected by meshes of a groove
and feather. This spindle revolves and is suspended within a socket provided
with an external screw thread fitting the internal thread of a bush, fixed to the
drill head. The socket is closed at its upper end and fitted above the threaded
part with a hand wheel and a screw for adjusting the pressure on the drill
spindle. By turning this hand wheel the socket and spindle are screwed up or
down in the drill head..
The drill head is provided with a tubular extension by means of which it is
connected to the radial arm and can be shifted or moved along the latter or
turned around its axis. The first motion is obtained by means of a small spur
wheel whose teeth gear with rings provided on the periphery of the tubular
extension and having a cross section which is of the same shape as the teeth
when the drill head has been adjusted to the required exact position the ex-
tension can be fixed therein by means of clamping jaws and pressure screws.
In order to revolve the drill head around its horizontal centre line a worm
wheel is provided which is connected by a feather and groove to the extension
so as to be capable of turning therewith, the worm wheel and tubular extension
to which it is attached being set in rotation by a worm.
It will be understood from the foregoing that the following adjustments can
be made:
1. The whole machine can be revolved around its vertical axis.
2. The transverse support can be raised and lowered.
3. The radial arm can be shifted horizontally within the transverse support.
4. The drill head can be located horizontally in the radial arm.
5. The drill head can be revolved around its horizontal axis.
6. The drill spindle can be shifted in the direction of its longitudinal axis.
The whole of these six motions cause a change in the position of the operating
tool, the adjustment of which can be thus effected with great rapidity.
Adjustments 1, 2 and 3 correspond to movements of large extent, while 4, 5
and 6 serve to adjust in its final and exact position the tool already brought
by the former motion in proximity of the point to be operated.
In a modified form of the invention, the larger or main adjustments of the
tubular arm in a horizontal direction are effected automatically i.e. derived
from the main or driving gearing. The cross driving spindle is for this purpose
provided throughout its whole length with a screw thread and the bevel wheel
which imparts a rotary motion to it by means of a groove and feather, is bored
large enough to run clear of the screw thread. An arm or cross piece is provided
with a hole through which, passes a vertical spindle the lower end of which
carries a half nut whose internal thread fits that of spindle. This half nut must
be capable of being raised (thrown out of gear) or lowered; the wall of the
transverse support has cut in it a slot of step like shape, through which a handle
fitted on the end of the spindle protrudes. By means of this handle the spindle
and half nut can be rotated. If the handle is moved so as to come to rest in the
upper part of the slot, the half nut is thrown out of gear, if however the said
handle rests on the lower step the half nut is in gear. The main or driving

page_text: gearing must be arranged so as to give forward or backward motion. As soon
as the cross spindle is rotated in either direction through the medium of the
upper vertical spindle and the bevel wheels this cross spindle and with it the
radial arm is moved one way or the other owing to the half nut being in gear
with its screw thread. If the half nut is thrown out of gear the spindle merely
imparts rotary motion to the operating tool.
According to a modification the radial arm is raised and lowered automatically.
To actuate this device, the driving gear must be arranged to work forwards
and backwards. The top bevel wheel revolving in bearings provided at the top
of the pillar has that portion of its hub which protrudes inside the pillar formed
into a bevel wheel gearing with another one journalled in the wall of the pillar.
The outer end of the spindle of the latter bevel wheel is fitted with a fast and
a loose pulley below which a belt shifting bar operated for instance by a' bell
crank and rod is arranged. The wall of the pillar is at the lower end thereof
fitted with a short spindle on which revolves a pulley having a width equal to
the aggregate widths of the aforesaid fast and loose pulleys and located immedi-
ately under them. The end of the short spindle which protrudes inside the
pillar is fitted with a bevel wheel gearing with another formed for the purpose
in view on the upper end of the base socket which surrounds the lower vertical
spindle. In this case the base socket is not fixed to the foot of the pillar, but
merely rests on washers of metal interposed between it and the foot of the pillar.
A belt is run in the usual manner over the lower pulley and one of the upper
ones. When this belt is on the loose pulley at the top of the pillar the lower
pulley and bevel wheel are stationary the latter holding the socket fixed. If
the lower spindle, is rotated it is screwed up or down within the socket now held
fast by bevel wheel. If now the belt is shifted on to the constantly revolving
upper fast pulley by means of the shifting bar the lower pulley is thereby caused
to revolve in a direction corresponding to that of the motion of the main or driv-
ing gearing. At the same time the bevel wheel which gears with the socket
causes it to revolve, thereby raising or lowering the spindle which does not
revolve for the time being.
When
In a modified form of the invention the cross spindle is driven direct by an
In this case the
electro-motor arranged at the rear end of the tubular arm.
screw spindle which serves to raise and lower the cross support is located in
the top of the pillar so that it is in this case unnecessary for it to extend below
the level of the ground. The raising and lowering of the transverse support
together with the arm drill head and electro-motor are effected by means of this
spindle in combination with a pair of bevel wheels and a coupling device. One
bevel wheel is mounted on a short intermediate spindle whose axis coincides
with that of the main spindle. This spindle is attached to an arm inside the
transverse support. The end of the spindles which are exactly opposite each
other are of hexagonal shape. The hexagonal end of the top spindle is embraced
by a socket or sleeve, the internal shape of which is likewise hexagonal.
the hexagonal head at the end of the intermediate spindle is disconnected from
that of the one above it, it simply revolves when the cross spindle is rotated.
The sleeve is embraced by the ring shaped end. of a. lever passing through a slot
of step-like shape in the wall. When the parts are not coupled the lever rests
on the top step, if however it is brought in contact with the bottom one, the
sleeve is moved downwards and embraces both hexagonal heads of the spindles.
The rotation of the cross spindle then causes the upper vertical spindle to revolve
in unison and to screw up or down in the upper bevel wheel which acts as a
nut. When the spindles are disconnected, the small vertical displacements are
effected through the pair of bevel wheels provided at the top of the pillar, these
being revolved by hand sprocket wheel and chain. In this case the bevel wheel
on the upper spindle acts as a fixed nut and its rotation causes the forward or
downward progress of the spindle.
The pillar is provided at its lower end with a flange resting on a disc provided

page_text: with a central pin or projection of large diameter surmounted by a smaller one.
The vertical pressure is first of all taken up by the flange and the raised rim
of the disc while the pins take up the lateral thrust. The disc rests on a bed-
plate carried by a framing resting on wheels and is capable of a lateral dis-
placement so that the whole machine can be moved in the direction of the
travel of the truck supporting the machine, which is fixed in position where it
is required by means of clamps gripping the rails. The flange is furthermore
provided with a ring provided with helical teeth and serves to turn the machine
around its vertical axis.
By making the machine capable of displacement on the bed plate or slide
two further movements are added to the above mentioned six adjustment for the
purpose of bringing the tool into the required position. These two "new movements
are 1st the longitudinal displacement of the machine on its rails and secondly the dis-
placement on the slide in a direction at right angles to the longitudinal dis-
placement. There are therefore in this form of the invention 8 movements
permitting the operating tool to be brought into the required exact position.
With the radial drilling and thread cutting machine according to this in-
vention it is possible to drill, tap ream out, screw in stay bolts, drill holes inside
pipes and perform all such like operations in any direction. It has the special
advantage that it can be quickly and accurately brought into the required
position, and is therefore an eminently suitable machine for use in the construc-
tion of fire boxes of the locomotive and marine type.
Dated this 17th day of August 1898.
BOULT & WADE,
Agents for the Applicant.
Improvements in or Relating to Drilling, Tapping and like Machines.
I, PAUL LANGBEIN, of Saronno, in the Kingdom of Italy, Manager, 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:
-
This invention relates to improvements in drilling, tapping and like machines
by means of which the operating tool can always be brought into the required
position, whatever that of the surface to be worked upon may be.
The invention is best understood by means of the accompanying drawings:
in which,
Figure 1 is a sectional elevation of the machine,
Figures 2 to 6 details of same,
Figures 7, 8 and 9 show a modification embodying the automatic driving
devices employed when horizontal displacements of large extent of the radial
arm have to be effected.
Figures 10, 11 and 12 show the automatic arrangement employed when vertical
displacements of large extent of the radial arm have to be effected.
Figure 13 is a modification of the machine whereby it is rendered portable
and electrically driven.
Figures 14, 15 and 16 are details of the machine shown in Figure 13.
A convenient form of the machine will now be described. A hollow pillar A
having two longitudinal slots which are diametrically opposite each other,

page_text: is provided at its lower end with a hollow extension A¹ which fits in a cup c¹
forming part of the bed plate c. The lower part of pillar A has cast on it a
flange to which is attached a crown B having cut on it helical teeth so as to
form a worm wheel gearing with a worm C.
When the latter is rotated, the whole machine can turn around its vertical
axis. The shaft of which the worm C forms part rests in bearings d¹ d² fixed
to a common base plate d (Figures 2 and 3) and is actuated by means of bevel
wheels rotated by a hand wheel 6 on a vertical spindle a. The bevel wheel on
this spindle is so arranged that it cannot move in a vertical direction while the
spindle can slide through it. The base plated can turn horizontally around a
vertical pin e provided under one of the bearings d. When the screw C meshes
with the worm wheel B the spindle a passes through a suitable hole provided in
the bed plate. The spindle a which is capable of moving up and down ver-
tically, can be lifted out of the hole, so that when it is desired to put the worm
and worm wheel out of gear, the base plate d is turned outwards around its pin e.
The foot of the hollow pillar is fitted with a socket G provided internally with
a screw thread and acting as a fixed nut for the vertical screw spindle F. The
upper end of the latter passes through a cross piece F2 which bears against a
shoulder F and carries a transverse support E which can slide up and down on
the pillar A. The upper extremity of the vertical spindle F is fitted with a
bevel wheel K meshing with a bevel wheel K¹ on a horizontal spindle I. On
rotating the latter by means of a hand wheel H a rotary motion is imparted to
the bevel wheel K and consequently to the vertical spindle F which screws
itself either upwards or downwards through the lower socket G according to the
direction of its rotation, the transverse support E moving accordingly either
upwards or downwards on the pillar A. The horizontal spindle I is provided
with a longitudinal groove which fits over a feather in the hub of the bevel
wheel K¹. At one of its outer ends and just in front of handwheel H the hori-
zontal spindle I is supported by a bracket Z¹ attached to a ring Z capable of
sliding on a radial arm or hollow shaft D and fitted with a projection entering
a groove on said arm.
The transverse support E carries the hollow radial arm D which can slide
therein and is fitted with a central shaft N imparting motion to the tool and
resting in bearings at both ends of the radial arm. On this shaft is a bevel
wheel P the bearing of which is fitted in a bracket p¹ forming part of the cross
piece p attached to the transverse support E. A rotary motion is imparted by
the bevel wheel P to the spindle N by means of a feather fitting in a longitudinal
groove on said spindle. The cross piece forms also a bearing for an upper
vertical spindle O, the lower end of which is fitted with a bevel wheel gearing
with the said bevel wheel P. This vertical spindle is provided with a longi-
tudinal groove fitted over a feather in the hub of a bevel wheel Q fitted in the
top of the pillar and imparting motion to said spindle. The horizontal shifting
of hollow arm D within transverse support E may be effected by hand, as shown
in Fig. 1.
The rotary motion imparted by suitable gearing to the upper vertical spindle O
and from the latter to the cross spindle N and bevel wheel f keyed thereon
inside the drill head L actuates through another bevel wheel f¹ the drill
spindle M and eventually through a third bevel wheel 2 another drill spindle g;
the connection between the bevel wheel f¹ and spindle M being effected by means
of a groove and feather. This spindle M. revolves and is suspended within a
socket m provided with an external screw thread fitting the internal thread of
a bush n fixed to the drill head L. The socket m is closed at its upper end and
fitted above the threaded part with a hand wheel and a screw for adjusting the
pressure on the drill spindle M. By turning this hand wheel the socket m and
spindle M are screwed up or down in the drill head.
The drill head L is provided with a tubular extension. S by means of which
it is connected to the radial arm D and can be shifted or moved against the latter

page_text: "
:
or turned. around its axis. The first motion is obtained by means of a small
spur wheel R whose teeth gear with rings provided on the periphery of the
tubular extension, S. and having a. cross section which is of the same shape as
'the teeth. Figure 5 is' a cross section of this arrangement; when the drill
head has been adjusted to the. required exact position, the extension S can be
fixed therein by means of clamping jaws and pressure screws. In order to
revolve the drill, head around. its horizontal centre line a worm wheel T is pro-
vided with is connected by a feather it and groove to the extension S so as to
be capable of turning therewith. As shown in Figure 6 which is a. section of this
arrangement, the worm wheel T and tubular extension S to which it is attached
are set in rotation by a worní U.
It will be understood from the foregoing that the following adjustments can
be made:-
1. The whole machine can be revolved around its vertical axis.
2. The transverse support E can be raised and lowered.
3. The radial arm 1) can be shifted horizontally within the transverse support.
4. The drill head L can be located horizontally in the radial arm D.
5. The drill head L can be revolved around its horizontal axis.
6. The drill spindle M can be shifted in the direction of its longitudinal axis.
The whole of these six motions cause a change in the position of the operating
tool, the adjustment of which can thus be effected with great rapidity.
Adjustments 1, 2 and 3 correspond to movements of large extent, while 4, 5
and 6 serve to adjust in its final and exact position. the tool already brought by
the former motions in proximity of the point to be operated.
Figures 7, 8 and 9 show a modified form of the invention, by means of which
the larger or main adjustments of the tubular arm A in a horizontal direction
are effected automatically i.e. derived from the main or driving gearing.
The cross driving spindle N is for this purpose provided throughout its whole
length with a screw thread, and the bevel wheel P which imparts a rotary
motion to it by means of a groove and feather, is bored large enough to run
clear of the screw thread. An arm or cross piece is provided with a hole
through which passes a vertical spindle the lower end of which carries a half
nuth whose internal thread fits that of the spindle N. This half nut must be
capable of being raised (thrown out of gear) or lowered; in the drawing it is
shown thrown into gear. Figure 7 shows by way of example how this may be
effected. The wall of the transverse support has cut in it a slot of step like
shape, through. which a handle 2 fitted on the end of the spindle protrudes.
By means of this handle ² the spindle and half nut can be rotated. If the
handle is moved so as to come to rest in the upper part of the slot, the half
nut h¹ is thrown out of gear, if however the said handle rests on the lower step
as shown in Figure 8, the half nut is in gear. The main or driving gearing
must be arranged so as to give forward or backward motion. As soon as the cross
spindle N is rotated in either direction through the medium of the upper vertical
spindle and the bevel wheels, this cross spindle N (and with it the radial
arm D) is moved one way or the other owing to the half nut being in gear
with its screw thread. If the half nut is thrown out of gear the spindle N
merely imparts a rotary motion to the operating, tool; and the arm I being
then free, can be moved backwards or forwards, by hand, in order to bring it
approximately into the position desired.
Figures 10, 11 and 12 represent a modification by means of which the radial
arm D.is raised and lowered automatically. To actuate this device, the driving
gear must be arranged to work forwards and backwards. The top bevel wheel Q
revolving in bearings provided at the top of the pillar A has that portion of its
hub which protrudes. inside the pillar formed into a bevel wheel gearing with
another one K journalled in the wall of the pillar. The outer end of the spindle
of, the latter bevel wheel is fitted with a fast and a loose pulley below which a
belt shifting bar X operated for instance by a bell crank and rod is arranged

page_text: (Figure 11)... The wall of the pillar is at the lower end thereof fitted with a
short spindle on which revolves a pulley having a width equal to the aggregate
widths of the aforesaid fast and, loose pulleys and located immediately under
them. The end of the short spindle which protrudes inside the pillar A is
fitted with a bevel wheel o gearing with another formed for the purpose in view
on the upper end of socket G which surrounds spindle F. In this case G is not
fixed to the foot of the pillar, but merely rests on washers of metal interposed
between it and the foot of, the pillar. A belt is run in the usual manner over
the lower pulley, and one of the upper ones. When this belt is on the loose
pulley at the top of the pillar the, lower pulley and bevel wheel o are stationary,
the latter holding the socket G fixed. If spindle F is rotated by the device,
shown in Figure 1 it is screwed up or down within the socket G now held fast
by bevel wheel o. If now the belt is shifted on to the constantly revolving
upper fast pulley by means of the shifting bar X, the lower pulley is thereby
caused to revolve in a direction corresponding to that of the motion of the main
or driving gearing. At the same time the bevel wheel o which gears with the
socket G causes it to revolve, thereby raising or lowering the spindle - which
does not revolve for the time being..
In a modified form of the invention shown in Figs. 13 to 16 the spindle N
is driven direct by an electro-motor V arranged at the rear end of the tubular
arm D. In this case the screw spindle F which serves to raise and lower the
cross support is located in the top of the pillar so that it is in this case un-
necessary for it to extend below the level of the ground. The raising and lower-
ing of the transverse support E together with the arm D, drill head L and
electro-motor V are effected by means of this spindle F3 in combination with a
pair of bevel wheels P P and a coupling device. One bevel wheel P₁ is mounted
on a short intermediate spindle F whose axis coincides with that of spindle F³.
This spindle is attached to an arm inside the transverse support E. The end
of the spindles 3 and F which are exactly opposite each other are of hexagonal
shape. The hexagonal end of the top spindle F is embraced by a socket or
sleeve F, the internal shape of which is likewise hexagonal. In the position
shown the hexagonal head at the end of the intermediate spindle F is discon-
nected from that of the one above it, it simply revolves when the spindle N
is rotated. The sleeve F5 is embraced by the ring shaped end of a lever F
passing through a slot of step-like shape Figure 16. When the parts are not
coupled the lever rests on the top step, if however it is brought in contact with
the bottom one, the sleeve F5 is moved downwards and embraces both hexagonal
heads of the spindles F3 and F. The rotation of the spindle N then causes the
spindle F to revolve in unison and to screw up or down in the upper bevel
wheel which acts as a nut. When the spindles 13 and F are disconnected, the
small vertical displacements are effected through the pair of bevel wheels pro-
vided at the top of the pillar, these being revolved by hand sprocket wheel and
chain. In this case the bevel wheel on the spindle F3 acts as a fixed nut and
its rotation causes the forward or downward progress of the spindle F³,
The pillar A is provided at its lower end with a flange A¹ resting on a disc c
provided with a central pin or projection c³ of large diameter surmounted by a
smaller one c*. The vertical pressure is first of all taken up by the flange A¹
and the raised rim of the disc, while the pins and take up the lateral
thrust. The disc rests on a bed plate C₁ carried by a framing resting on
wheels R R2 and is capable of a lateral displacement so that the whole machine
can be moved in a direction perpendicular to the plane of the drawing, that is
to say, to the direction of the travel of the truck supporting the machine, which
is fixed in position where it is required by means of clamps D¹ D². gripping
the rails. The flange A¹ is furthermore provided with a ring B provided with
helical teeth and serves to turn the machine around its vertical axis.
By making the machine capable of displacement on the bed plate or slide C¹

page_text: two further movements are added to the above mentioned six adjustments for the
purpose of bringing the tool into the required position. These two new move-
ments are first the longitudinal displacement of the machine on its rails, and
secondly the displacement on the slide C in a direction at right angle to the
longitudinal displacement. There are therefore in this form of the invention
eight movements permitting the operating tool to be brought into the required
exact position.
With the radial drilling and thread cutting machine according to this inven-
tion it is possible to drill, tap, ream out, screw in stay bolts, drill holes inside
pipes and perform all such like operations in any direction. It has the special
advantage that it can be quickly and accurately brought into the required
position and is therefore an eminently suitable machine for use in the construc-
tion of fire boxes of the locomotive and marine type.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what
I claim is
1. A drilling tapping and like machine characterised by the following six
movements, each of which effects a different setting of the tool:-
(a) A rotation of the whole machine round its vertical axis.
(6) An ascending and descending movement of the transverse support,
carrying a radial arm such as D).
(c) A horizontal reciprocating movement of the radial arm in the trans-
verse support.
(d) A horizontal reciprocating movement of the drill head S in the radial
arm.
(e) A rotation of the drill-head round its horizontal axis.
(f) An ascending and descending movement of the drill-spindle whereby
the tool can be quickly set in any desired position; substantially as described.
2. A machine of the kind described, in which the horizontal reciprocating
movement of the radial arm is produced automatically by means of gearing,
producing a to-and-fro movement, turning the screw shaft (N) whereby the shaft
can be screwed forward or reversely in the nut-segment (¹) which can be engaged
or disengaged and is adjustable on the transverse support, while the radial arm
can je moved to and fro in the transverse support by hand after withdrawing the
nut-segment substantially as described.
3. A machine of the kind described comprising a main toothed pinion Q
driving besides a vertical spindle for operating the horizontal screw shaft also
a shaft provided with a fast and a loose pulley, the movement of which is trans-
mitted by the fast pulley to a pulley at the foot of the standard, driving bevel
gearing to raise or lower the lower vertical spindle carrying the transverse support,
substantially as described.
4. A machine of the kind described in which the spindle (N) is directly
actuated by an electro-motor (V) arranged on the radial arm, the vertical move-
ments of the transverse support being produced directly and automatically by the
spindle (N) by bevel gearing in connection with adjustable gearing through the
screw spindle (F³) arranged above the radial arm; while the whole drilling
machine is rotatory on a bed-plate supported on a carriage in such a manner
that the described six movements are supplemented by two others viz.:-the
movement of the carriage and the movement of the bed-plate at right angles to
the latter substantially as described.
5. The complete drilling, tapping and like machine substantially as described
or illustrated in Figure 1 of the accompanying drawings.
6. The combination and arrangement of parts for producing horizontal move-
ments of the radial arm substantially as described and illustrated in Figures 7,
8 and 9 of the accompanying drawings.

page_text: 7. The combination and arrangement of parts for producing vertical move-
ments of the radial arm, substantially as described and illustrated in Figures 10,
11 and 12 of the accompanying drawings.
8. The portable drilling and tapping machine substantially as described and
illustrated in Figures 13, 14, 15 and 16 of the accompanying drawings,
Dated this 17th day of the 2000
BOULT & WADE,
Agents for the Applicant.