IMPROVE- MENTS IN THE CONSTRUCTION OF MULTIPLE DRILLING MACHINES, AND GEARING AND FITTINGS CONNECTED THEREWITH
Year: 1879

page_text: LETTERS PATENT to Hugh Smith, of Possil Engine Works, Glasgow, in the
County of Lanark, North Britain, Engineer, for the Invention of "IMPROVE-
MENTS IN THE CONSTRUCTION OF MULTIPLE DRILLING MACHINES, AND GEARING
AND FITTINGS CONNECTED THEREWITH."
:
Sealed the 2nd March 1880, and dated the 6th September 1879.
PROVISIONAL SPECIFICATION left by the said Hugh Smith at the Office
of the Commissioners of Patents on the 6th September 1879.
HUGH SMITH, of Possil Engine Works, Glasgow, in the County of Lanark, North
Britain, Engineer. "IMPROVEMENTS IN THE CONSTRUCTION OF MULTIPLE DRILLING,
MACHINES, AND GEARING AND FITTINGS CONNECTED THEREWITH."
This said Invention has reference to a new or improved construction of multiple
drilling machine, and gearing and fittings connected therewith, of the large or
heavy class, susceptible of several modifications, specially designed and adapted for
boring many holes in a row at one time in different kinds of large or heavy.
structures, namely (first), for boring the rivet or stay, and tube holes, in the plate
work of circular marine or other steam boilers before and after the plates have
been put together by bolta; and (second) for boring the rivet holes of girders, and
such like plate work; too long or heavy to be moved when put together; and
(third) the boring of lighter plate work, which could be laid or secured on the top
of a strong moving bed or table traversed to and fro under the guide bed, carrying
the row or set of sliding saddles and drill stocks, as well also as to improved
fittings and gearing for moving or turning the boilers or other large round articles
in front of the drilling machinery, and in gearing aud fitting for making the.
drill spindles tap the stay or other holes requiring this, which new or improved
machines will be more suitable for the boring, and for the tapping or screwing of
the holes in such structures, and also more durable and steady in their action, than
the multiple drilling machines heretofore in use for these purposes.
The nature and novelty of the Invention and construction of this improved
multiple drilling machine as designed (first) for the boring of the rivet and other
holes in boilers and such like large portable structures, consists in making two main
upright web and feather, or box side, or end frames, preferably straight or vertical
at the front edges, but curving out bracket-wise at the back towards the base,
which is made in the form of a broad solid flange, both secured to suitable

page_text: longitudinal beams of wood or bed plates on stone masonry or other suitable heavy
foundation. These main side frames are made somewhat higher than half the
height of the boiler or other large object to be bored, and erected and secured
together by longitudinal stays through the bracket webs at a sufficient distance
apart to form the length of machine desired to bore the holes across the whole, or
half side, or end of the boiler, which has to be bored in front of it, and so as to
admit of or allow room for as many side drill saddles and their spindle headstocks
as it is desired to be able to bore holes at one time, as say, from four to eight, or so,
for such boiler boring machines. The inner front sides of these frames are truly
planed and formed with a broad vertical edge slide, having mounted on each a deep
edge web saddle, carried and actuated by deep screw nuts on their inner side, and
long vertical screw spindles passing through them, mounted in the centre of the
slide side frames; these screw spindles being actuated simultaneously, preferably by
small screw wheels on their top end gearing into corresponding screws on a light
cross shaft carried in suitable journal bearing brackets on the top of the frames, and
worked either by hand wheels on the over-hung end of the cross shaft or by an
open and cross belt from the shop driving shaft above, and a fast and two loose
pulleys mounted on any convenient part of the cross shaft, which cross shaft might
also work the screw spindles by bevel wheels (instead of the screws and screw
wheels) when desired, as done in many planing machines. These inside slidé
saddles project forward in front of the vertical edges of the side frames, and have
large strong journal bearings in them, into which the end swivelling gudgeons
of the main longitudinal hollow framed 'guide bed is carried and oscillated, and is
raised and lowered with its said slide saddles and their spindles. This longitudinal
oscillating bed frame is planed on the top surface with angled or dovetail guide
edges, on which the slide saddles and headstock frames (preferably formed in one
piece in this case) carrying the drill spindles are mounted transversely across the
bed.
The
Each saddle is traversed longitudinally to any desired distance apart on this
swivelling guide bed frame by a hand wheel and spindle on each, with a pinion
working into a toothed rack on the back edge of the bed for the whole set. On
the neck of each gudgeon, close up to the inside of their carrying saddles, a
segmental or quadrant wheel is fixed, with a plain rim.for fixing the bed to the
saddle on that side in any desired angular position it is set to for boring. The
other segment being formed with screw teeth for a screw on a hand screw spindle
to work in, and carried in journal bearings on the saddle to turn it and the long
bed, with all the drill stocks on it from the horizontal position down to the
plumb, with the drills sticking out in front of the machine, so as to bore a
row of holes horizontally or vertically at any desired distance apart in an
object set there, or at any angle within that range of 90°, or even more.
shaft for driving all the spindles of the drill stocks is mounted and worked through
journal bearings in the gudgeons, and passes through steadying bearings in each drill,
saddle, or stock, a little below the drill spindles, which it drives by a loose spur
pinion with clutch, sliding on the shaft with a groove and feather connection for
each drill spindle, which is actuated by a bevel wheel on a hollow spindle or boss,
actuated by a bevel pinion gearing into it on a short intermediate spindle, actuated
by a spur wheel on it gearing into the spur pinion on the longitudinal driving
shaft. This main driving shaft is actuated by a spur wheel on one end outside the
frame, gearing into a pinion on the spindle of the belt-driving pulley, carried
on the outside end of the saddle of the gudgeon, bearing on that side, which also
carries a small guide following pulley in front for the driving one, so that the outer
surface of the driving belt led down from the drum on the overhead motive power
counter shaft passes round the under surface of the pulley driving the gearing of
the longitudinal shaft up over the guide following pulley in front, from which it
passes down round a reversing guide pulley on a stud centre on the lower part of
the side fraine, and then up to the driving shaft over the machine, all so as to drive
the said gearing on the raising and lowering saddles and longitudinal bed frame in
whatever position they may be in. This longitudinal shaft, thus driven by a belt

page_text: at one end from above, or it might be a horizontal belt, or endless ropes or bands,
when these are used in the shop for driving machines, actuates all the drilling
spindles simultaneously; but the spur pinion which drives the drill spindle is fitted
and actuated by an engaging and disengaging coupling, with a handle for each to
stop or start the spindle and drill at pleasure. The back end of each spindle is
fitted with a screw nut with screw wheel actuated by a short screw spindle (carried
on a hinged bracket at the back end of the spindle frame or saddle) having a small
stepped cone pulley on its overhanging end, actuated by a strap from a corres-
ponding reversable cone pulley on the shaft spindle which drives the drills, or it
might be by a light shaft driven by small spur wheels from the drill spindle, all so
as to give any desired rate or feed to the drills; and the feed screw spindle can
be thrown out of gear at pleasure, so as to set or draw back the drills by a hand
wheel on
the feed screw nut of the spindle when desired. Which feeding
screw and screw wheel can be changed for quicker speed wheels, when the drilling
spindles are to be used for feeding in taps, and screwing the holes after they
have been bored in the boiler ends for stays or other purposes. A further
improvement in connection with this machine consists in carrying the boiler after it
has all been put together ready for having the holes bored in it by gudgeons bolted
by cruci-formed or other flanges to its end centres, and mounting these in bearing
blocks secured on strong portable wood frames or trussels set on beams or other
flat foundation in front of the machine and longitudinal set of drills already
described. And when it is the side of the boiler that the holes are to be bored in
the drills would be set to suit the holes in the streak of plates longitudinally on
their guide bed by their hand wheel and rack gear, when the drills would be
lowered or raised to the horizontal line through the centre of the boiler, and after
boring the first row of holes in this position, then the boiler would be turned on
its gudgeons and trussel bearings to the next row in succession until the whole
rows of holes were so bored all round the circumference. To effect this turning of
the boiler a screw wheel is mounted on the overhanging end of one of the gudgeons,
with a screw working in it on the end of a spindle carried in bearings on the
pillow block of the gudgeon, the other end of the shaft being carried forward
through between the frames of the drilling machine, and carried in a bracket there,
having a hand wheel on it for the attendant to turn the boiler from the platform.
on which he stands at the back side or ends of the drills to attend to their feeding
gear, which platform may be carried from the slide saddles of the drill bed so as
to be raised and lowered therewith. Then for boring the holes in the ends of the
boiler or other large round piece of work the mode of, and means, or fittings for
mounting and turning the boiler are different or somewhat modified. Thus in this
case the end of the boiler to be bored is turned close up to the front of the row of
drills, carried only on its gudgeon and bearing block and trussel frame at the back.
end;
but instead of these at the front end two small bearing or bracket blocks
are fixed at some distance apart on a portable sole, of wood or other equivalent,
with short spindles and bearing rollers on them, and which are fitted under the
front end of the boiler as a bearing. The boiler being also turned by those bearing
rollers through bevel pinions on the overhanging end of their spindles, gearing into
corresponding wheels on a long light shaft carried in bearings in the same blocks,
and in one at its outer end close to or on one of the end frames of the drilling
machine, where it is actuated by a screw wheel on it, and a corresponding screw
gearing into it on the lower end of a vertical shaft carried by a bearing bracket
ou the frame below, and above by a bearing bracket on the end saddle of the drill
bed, and there driven by bevel wheels at outer end of a horizontal angled shaft,
also carried in bearings on the same saddle by a hand wheel on its inner end con- ·
venient for the attendant to turn the boiler for every new row of holes to be
bored, either radially or parallelly, as required, in the end of the boiler; or it might
be screwed by using taps in the place of drills. This new or improved multiple
drilling machine is also made suitable for boring other classes of portable work by .
fitting a strong V slide, bed, with either one or two travelling table or bed plates;

page_text: thereon, under the sets of drills between the side fraines traversed to and fro at
right angles to the swivelling drill slide bed above by hand, through stationary
longitudinal screws with hand wheels or transverse shafts with spur pinions
working into toothed racks on the under side of bed, and worked by a hand wheel
on a screw and screw wheel side shaft; all so as to bore rows of holes longi-
tudinally and transversely in any work laid, or fixed on these travelling beds either
vertically or horizontally or at any angle between these. Thus acting in a
universal manner like or instead of a radial drill for boring holes any where across
the work. In some instances, and for some classes of work, where such angular
boring is not required, the main longitudinal guide bed of the drill stocks with
these, either ranged so as to bore only vertically or horizontally, then the guides on-
the main frame might be formed on the front instead of on the sides for the
saddles of the drill bed to be traversed up and down on by screws or racks, in
which case the drill could be mado longer than the distance between the main
frames, and so carry more drill stocks or give a greater range of traverse for these.
The portable arrangement or modification of this improved multiple drilling
machine, suitable for girder or other long heavy work which cannot be moved,
consists in mounting the two main vertical end guide frames on a swivelling sole
plate carried in a low carriage. The guides and raising and lowering saddles, two in
number in this case, are mounted on the outside of the main frames, and these saddles
have V or dovetail recess guides formed on their outer face horizontally, into which
strong edge transverse slides work, carrying at their front end the bearings of the
end gudgeons of the swivelling longitudinal beds of the drill stocks, and also all
the driving mechanism. These two beds carrying the drill stock are mounted, one
at top to bore over the work and the other to bore along the front face, having
their gudgeons and the driving shaft through the centre of the box bed, so as to
drive each drill spindle by a short intermediate axis working out through the
saddle and drill stock or frame made in separate parts in this case and by two
pairs of bevel wheels, the one pair inside the bed and the other outside the drill
stock, so that this is enabled to be swivelled on its saddle on the centre of the said
short transmitting bevel wheel shaft, so that the drill can be made to bore at any
angle in this longitudinal direction as well as transversely by oscillating on their
bed swivelling in its gudgeons. And the feeding screw of the swivelling drill is
actuated by a light spindle, carried on the headstock parallel to the drill spindle
by a spur wheel and pinion, actuating the short screw spindle which works into the
screw wheel on the back end of the feeding screw, which swivelling of the drill
stocks on their saddles allows the drill to be set to bore holes in the curved sides
of girder or other work at right angles to the tangential line of the curve
where the hole is being bored. The slide beds of these swivelling drill stocks
are oscillated and held by a screw and plain rimmed segment or sector
wheel, as in the former arrangement; but the main shaft driving the drills
as described, through them may be driven in one of two ways; first, either
shaft is driven direct by crank discs on its outer ends with the crank pins-
at right angles, and connecting rods from small horizontal steain cylinders or
engines mounted on the back end of the long lateral slide frames carrying each drill
bed and set of drills, so that these may be worked separately at any desired speed
or stopped while the other set is working. In this case, the swivelling table and
carriage carrying the whole might have a steam boiler mounted on it, preferably at
the back, which would thus counterbalance the weight of the drill stocks and beds
with the working gearing in front, the steam being led direct to the different
cylinders or engines by steam connecting pipes and controlling valves of their own,
which pipes would have universal joints or a flexible connecting part to allow of.
the motion of the slide frame carrying the engine and gearing; or, when desired,
long flexible pressure resisting steam pipes might be used to convey the steam from
stationary steam boilers; or, second, these shafts could be driven through gearing
at their ends, and grooved pulleys by endless driving bands or ropes, when these
are carried and used through the work shop or building yard. These slide frames.

page_text: at opposite ends of the machine (of the upper and lower beds and their set of drills)
are each raised and lowered simultaneously by their rack pinions carried on the
raising saddle, and a horizontal spindle carried in bearings on each side of the
pinion, and a screw wheel on the outer end actuated by a screw on a short inter-
mediate spindle carried over and and actuated by spur wheels at the back of the
crank discs of the main longitudinal motive shaft, the rack pinion spindle sliding
on a groove and feather either through the pinion or the screw wheel at its outer
end, and the intermediate screw spindle is fitted with a friction or other clutch for
throwing the raising and lowering mechanism out of gear, and a tightening screw
is fitted on each saddle to fix them and prevent vibration.
Although this machine has been described with a double set of drills and
arrangement of their carrying bed saddles, and motive engines or driving gear, this
being the more complete tool for boring two sets of holes at one time, one set boring
from above the work and the other set boring along the two outsides of the girder,
for which this turn table or bed frame machine. is designed, yet it will be evident
that one set of drills would answer in this machine, in which they are mounted on
a swivelling slide bed, as they are thus enabled to bore the vertical holes from over
the work, and the horizontal ones from the sides afterwards. And for the puppose
of getting the drills as close to the work as possible, for steadiness in boring deep.
beams, the carriage frame or top on which the sole plate of the machine turns is
mounted on dovetail or other slide bearing frames carrying the wheel bearing
blocks, so as to be shifted by a toothed rack and pinion ranged and turned at both
ends of the machine, thus. traversing the machine laterally to and from the work,
over the wheel frames and line of rails on which the machine passes along both
sides of the girder or work. For which reason the whole machine is made to turn
by a centre pin and eye in its bed plate and top frame of the carriage so as to turn
the front of the machine and drills right round to face the work without turning
the carriage by its wheels on the rails, which would be difficult in the contined
space of a shop and building yard without the expense of a railway turn table,
while by a simple arrangement of leading the two lines of rails to cross each other
at one or both ends of the shop or work floor, and fitting them with switch points,
the carriage can be shunted from one set of rails on to the other in the same
manner that ordinary railway trains or carriages are shunted from the up on to the
down line or vice versa.
In this modification of portable drilling machine in which the drill bed and the
drill stocks both swivel with the drills ranged in a longitudinal row, the bed might
have a complete screw wheel on it and be turned quite half round and the drill
turned round to the front so as to bore on the lower side of the bed as well as on
the upper side, and so drill longitudinal rows of holes low down to the carriage.
And in this machine, when it is only desired to bore longitudinal rows of holes
vertically with the upper set of drills, horizontal rows with the lower set, it will be
evident that their slide beds might be fixed on their raising and lowering saddles
and so dispense with the swivelling mechanism. The carriage carrying, the whole
machine may be traversed on its rails by gearing connected to one or both of the
running wheel shafts by hand or by power through an intermediate shaft with
hand wheel, or grooved band wheel, or gearing, as the case might. be. And the
carriage might be secured or firmly held down to the rails on the front or both
sides by screw clips or other grippers over the head of the rails, the chairs being
secured to the sleepers, and the sleepers passing under the heavy beam being bored,
effectually prevents the lifting or canting of the machine while boring.
Although not so described, it will be understood that for some classes of light
girders or other work to be bored that this might be mounted on low carriages or
trucks traversed on rails in front of or under the drills and drill beds, the tables of
which carriage would have a transverse lateral motion given to them, as described
in reference to that of the drill carriage.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Hugh Smith in the Great Seal Patent Office on the 5th March
1880.
HUGH SMITH, of Possil Engine Works, Glasgow, in the County of Lanark, North
Britain, Engineer. "IMPROVEMENTS IN THE CONSTRUCTION OF MULTIPLE DRILLING
MACHINES, AND GEARING AND FITTINGS CONNECTED THEREWTH."
My said Invention has reference to a new or improved construction of multiple
drilling machine, and gearing and fittings connected therewith, of the large or
heavy class susceptible of several modifications specially designed and adapted for
boring many holes in a row at one time in different kinds of large and heavy
structures; namely (first), for boring the rivet or stay and tube holes in the plate
work of circular, marine, or other steam boilers before and after the plates have been
put together by bolts; (second), for boring the rivet holes of girders and such like
plate work too long or heavy to be moved when put together; and (third), the
boring of lighter plate work which could be laid or secured on the top of a strong
moving bed or table traversed to and fro under the guide bed carrying the row or
set of sliding saddles and drill stocks. As well also as to improved fittings and
gearing for turning or traversing the boilers or other large round articles, in front
of the drilling machinery, and in gearing and fittings for making the drill spindles
tap the stay or other holes requiring this, which new or improved machines will
be more suitable for the boring and for the tapping or screwing of the holes in such
structures, and also more durable and steady in their motion than the multiple
drilling machines heretofore in use for these purposes.
And in order that my said Invention, and the manner in which the same is
performed or put into effect or practice may be properly understood three Sheets
of Drawings are hereunto appended for that purpose, on which the same reference
letters are used to mark the same or like parts where they are shown.
Figure 1 on Sheet 1 of these Drawings is a plan; and Figure 2 is an end eleva-
tion showing my improved multiple drilling machine boring rivet holes in a boiler
at the longitudinal and circumferential joints of the boiler; and Figures 3 and 4
are corresponding views of the same machine, but without details, as shewing the
end plates of the boiler being bored. The construction of this improved multiple
drilling machine as designed and thus shown for the boring of the rivet and other
holes in boilers, and such like portable structures, consists in making two main
upright web and feather or box side or end frames A, A¹, preferably straight or
parallel at the front edges, but curving out bracket-wise at the back towards the
base which is made in the form of a broad solid flange A¹ both secured to suitable
longitudinal beams of wood; or bed plates, or stone masonry, or other suitable heavy
foundation, by the bolts a. These main side frames A, A', are made somewhat
higher than half the height of the boiler B or other large objects to be bored, and.
erected and secured together by longitudinal stays a' through the bracket webs
A, A', crossing and bolted together in the centre, and with the side frames a
sufficient distance apart to form the length of machine desired to bore the holes
across the whole or half side, or end of the boiler B, which has to be bored in
front of it, and so as to admit it and allow room for as many slide drill saddles C
and their spindle headstocks C¹ as it is desired or convenient to bore holes at one
time, and the space between the side frames may be made sufficient to admit, say,
from four to eight, or so, of these for such boiler machines, although only one is
shown in the Drawings.
The inner front sides of these side frames A, A¹, are truly planed and formed
with a broad vertical angled or V edged slides at A", having mounted on each a
deep edge web saddle D carried and actuated by deep screw nuts on their inner
side, and long vertical screw spindles D¹, passing through them, mounted in the

page_text: centre of the slide side frames A, A¹, these screw spindles D' being actuated simul-
taneously preferably by small screw wheels E on their top, and gearing into
corresponding screws E¹ on a light cross shaft F carried in suitable journal bearing
brackets F on the top of the frames A, A¹, and worked either by hand wheels fl
on the overhung end of the cross shaft at either side, or by an open and cross
belt from. a pulley on the shop driving shaft or counter shaft above the machine
and a fast and two loose pulleys g, g, g, mounted near one end, or on any other
convenient part of the cross shaft F, which cross shaft F might also work the
screw spindles D¹ by bevel wheels (instead of the screws and screw wheel) when
desired, as done in many planing machines. These inside slide. saddles D project
forward in front of the vertical edges of the side frames A, A¹, and have large
strong journal bearings d in them into which the end swivelling gudgeons H of
the main longitudinal hollow framed guide beds H' are carried and oscillated, and
is raised and lowered with its said side saddles D and their screw spindles. This
longitudinal oscillating bed frame H¹ is planed on the top surface with V angled or
dove-tailed guide edges on which the slide saddles C and headstock frames C¹
(preferably formed in one piece in this case) carrying the drill spindles care
mounted transversely across the bed H¹. Each saddle is traversed longitudinally
to any desired distance apart on the swivelling guide bed frame H' by a hand
wheel C and spindle on each, with a pinion C working into a toothed rack Cull on
the back edge of the bed H' for the whole set.
On the neck of each gudgeon H close up to the inside of the carrying saddles D
a segmental or quadrant wheel I, is fixed with a plain rim for fixing. the bed
H to the saddle D, with a bolt on that side in any desired angular position it is
set to for boring, the other segment I' being formed with screw teeth for a screw I"
on a hand screw spindle I to work in, and carried in journal bearings on the
saddle D to turn it, and the long bed H' with all the drill stock's C, C¹, on it from
the horizontal position down to the vertical, with the drills c¹ projecting out in
front of the machine so as to bore a row of holes horizontally, or when the bed
plate Hand drill saddles C are swivelled round, it may be vertically, at any
desired distance to suit the work required, or at any angle within the range of 90°,
or even more.
The shaft H for driving all the spindles c of the drill stocks C, C¹, is mounted
and worked through journal bearings in the gudgeons H, and pass through steadying
bearings J in each drill saddle or stock C, C¹, a little below the drill spindles o,
which it drives by a loose spur pinion K with clutch k sliding on the shaft H, with
a groove and feather connection for each drill spindle c, which is actuated by a bevel
wheel K¹ on a hollow spindle or boss actuated by a bevel pinion K³ gearing into
it on a short intermediate spindle k actuated by a spur wheel " on it, gearing into
the spur pinion K on the longitudinal driving shaft H. This main driving shaft
His actuated by a spur wheel L on one end outside the frame A, A', gearing into
a pinion L' on the spindle or stud L" of the belt driving pulley L¹ carried on the
outside end of the saddle of the gudgeon H on that side, which also carries a small
guide following pulley L in front of the driving one L¹¹, so that the outer surface
of the driving belt gs led down from the drum G' on the overhead motive power
counter or shop shaft G passes round the under surface of the pulley L (driving
the gearing of the longitudinal shaft H³) up over the guide following pulley L' in
front, from which it passes down round a reversing guide pulley L³ on a stud L on
the lower part of the side frame A, A', and then up to the driving shaft G over the
machine, all so as to drive the said gearing on the raising and lowering saddle D
and longitudinal bed frame H', in whatever position they may be in. The longitu-
dinal shaft His thus driven by the belt g² at one end from above, or it might be a
horizontal belt or endless ropes or bands, when these are used in the shop for driving
machines, actuating all the drilling spindles c simultaneously, but the spur pinion K
which drives the drill spindle c is fitted with and actuated by an engaging and dis-
engaging clutch with a handle k¹ for each to stop and start the spindle c and
drill cat pleasure. The back end of each spindle c is fitted with a screw and screw

page_text: nut cactuated by a hand wheel c¹¹¹, or automatically by the screw wheel c
actuated by a short screw spindle c³ (carried on a flanged bracket at the back end
of the spindle frame or saddle C) having a small stepped cone pulley m on its over-
hanging end actuated by a strap m' from a corresponding reverse cone pulley ml
on the shaft spindle H2 which drives the drills, or it might be by a light shaft driven
by small spur or bevel wheels.from the drill spindle, all so as to give any desired
rate of feed to the drills, and the feed screw spindle c³, can be thrown out of gear at
pleasure, so as to set or draw back the drills c¹ by a hand lever c¹11 which lifts the
screw out of gear with its wheel c³ when desired, which feeding screw and screw
wheel c can be changed for quicker speed wheels when the drilling spindles c are
to be used for feeding in taps and screwing the holes after they have been bored in
the boiler ends for stays or other purposes.
A further improvement in connection with this machine consists in carrying the
boiler B, after it has been put together ready for having the holes bored in it, by
gudgeons bolted by a cruciform or other flange to its end centres, and mounting
these on strong blocks secured on strong portable carrying frames or tressles set on
beams or other flat foundation in front of the machine and longitudinal set of drills
already described, but not so shown in the Drawings. Instead of being carried by
such gudgeons as described the boiler.may be carried on four or more small rollers
B¹ fitted on spindles or studs b supported in bearings in the brackets B" bolted_to
the, beams or other foundation in front of the machine, as shown in Figures 1 to 4.
And when it is the side of the boiler that the holes are to be bored in, as in the
plan and elevation, Figures 1 and 2 respectively, the drills c would be set to suit the
loles in the streak of plates longitudinally in their guide bed H' by their hand
wheel C and rack gear C, C2, when the drills would be lowered or raised to the
horizontal line through the centre of the boiler, and -after boring the first row of
holes in this position then the boiler would be turned on its gudgeons and turned
bearings or rollers B' to the next row in succession, until the whole rows of holes
were so bored all round the circumference. To effect this turning of the boiler a
bevel wheel N is mounted on the overhanging end of one of the side saddles D with
bevel pinion N¹ working in it on the end of a spindle n carried on bearings on a
bracket N on the side saddle D, the other end of the shaft being carried back over
the bed H of the drilling machine, and carried in a bracket N2 on the slide saddle
D, having a hand wheel N³ on it for the attendant to turn the boiler from the plat-
form M on which he stands at the back end of the drill spindles c to attend to their
feeding gear, which platform may be carried from the bed H or its carrying saddles
D, so as to be raised and lowered therewith.
The bevel wheel N is fitted so as to slide up and down on a vertical spindle n', at
the lower end of which a screw o is fitted gearing into a screw wheel 0¹ on a
horizontal shaft o supported. on a bracket P at this end, and at the centre and other
end. by small brackets p, 'p', fitted to the brackets B carrying the rollers B' on
which the boiler turns, and carrying a pair of bevel pinions Q, Q, gearing into a
-second pair of bevel pinions Q1, Q, on one set of the-spindles b, on which the
rollers B' are fitted. Then for boring the holes in the ends of the boiler or other large
round piece of work, as shown in Figures 3 and 4, the mode of and means or fittings
for mounting and turning the boiler are similar, excepting that the shaft o is placed
transversely in front of the boiler B: Thus in this case the end of the boiler B to
be bored is turned round close up to the front of the row of drills- c, and may be
carried only on its gudgeon and bearing block and tressle frame at the back end;
but in place of the gudgeon or gudgeons two small bearing or bracket blocks B
are fixed at some distance apart on a portable sole of wood or other equivalent
with short spindles band bearing rollers B¹ on them, and which are fitted under
the front end of the boiler B as a bearing. The boiler being also turned by these
bearing rollers B₁ through the bevil pinions Q", Q, on the overhanging end of
their spindles b gearing into the corresponding wheels Q, Q, on the long light
shaft o, carried in bearings in the blocks or brackets-p, p¹, and by the bracket P
at its outer end, close to, or it might be on one of the end-frames A, A¹, of the.
•

page_text: drilling machine where it is actuated by the screw wheel O¹ on it, and the corres-
ponding screw O gearing into it on the lower end of the vertical shaft n' carried by
a bearing bracket below, and above by a bearing bracket on the end saddle of the
drill bed H' as before described, and actuated by the hand wheel Ns at the back of
the frames A, A', convenient for the attendant to turn the boiler B, for every new
row of holes to be bored either radially, transversely, or in circles, as required, in the
end of the boiler, the rows of holes when parallel being bored by raising and lowering
the bed H. Or the holes might be screwed by using taps in the place of the
drills c¹ fitted in the end of the drill spindle c, and using the quick feeding gearing
motion fitted at the back end of the feeding screw C₁ of the drill spindle c and its
carrying stock C as before described.
Instead of the slide saddles D being fitted inside the side frames A, A¹, these
may be fitted outside, and the main horizontal shaft H' actuating the drills may
be driven by bevel gearing instead of the compensating arrangement of pulleys.
In this case the bevel wheel on the end of the shaft H³ would gear into a bevel
pinion on a vertical shaft carried on to a footstep bearing at the lower end, and
held in bush bearings in a bracket on the sliding saddle D on which the bevel.
pinión rests, an arrangement of which is shown in Figures 5, 6, and 7, on Sheet 2.
Or otherwise the main shaft H³ may be directly connected with and form the
crankshaft of a steam or other motive power engine fitted at one side on the raising
and lowering slide saddles. By a further modification a second longitudinal
swivelling frame or drill stock bed H' is fitted immediately above or below the
first, carried by its gudgeons H in sliding saddles either outside the side frames
A, A', but of course raised and lowered by separate screws, and fitted with separate
sets of sliding drill saddles and stocks C, C¹, to bore horizontally or vertically or
both, at different heights.
Figure 5 on Sheet 2 of the Drawings is a front elevation, Figure 6 is a plan,
and Figure 7 is a side elevation with the upper part broken away, showing my
new or improved multiple drilling machine as applied for boring lighter classes of
portable work (such as large castings) having the side frames A, A¹, substantially
as described in reference to the Figures on Sheet 1, with the vertical guides All¹
and their saddles D fitted on the inside of their frames A, A¹, so as to carry the
longitudinal drill stock bed H' (not indicated in the Drawings) by its gudgeons in
overhanging brackets D and eyes d in these. In this machine the side frames
A, A¹, have a V guide groove A² fitted on the lower inside part of each, with a
strong wide traversing table R working in these, or it might be two tables R with
a double V slide bed A³ in the centre between the side frames A, A¹, under and in
front of the set of drills c and drill stocks C, C, on the horizontal shaft H² and
between the side frames A, A', this table R being traversed to and fro at right
angles to the travelling drill slide bed above by hand through a transverse
horizontal shaft S, or shafts when there are two tables with spur pinions S¹ working
into toothed racks S² formed on the under side of the bed and worked by hand
wheels S on screw wheel shafts S³ having screws S" on them working in screw
wheels S' on the transverse horizontal shaft S all so as to bore rows of holes
longitudinally and transversely in any work laid or fixed on the travelling table R
or beds R, R, either vertically or horizontally, or at any angle between these, thus
acting in a universal manner, like or instead of a radial drill for boring holes
anywhere round the work, the positions of four drill stocks being indicated by the
vertical dotted centre lines C in Figure 5. In this machine the main shaft H
actuating the drills is driven by the bevel wheel 1, 11, the latter sliding up and
down on a vertical spindle passing through an eye on a bracket cast on or
bolted to one of the sliding saddles D, and supported below in a footstep bearing
on the bottom flange A¹ of the side frame A. This vertical spindle is driven by a
bevel wheel, at its lower end gearing into a bevel pinion 7111, on the spindle of
an arrangement of quick and slow motion coned pulleys with back speed * carried
on and similar to that used in the head stock frame M of a lathe. In some instances
and for some classes of work where such angular boring is not required the main
:

page_text: longitudinal guide bed H' of the drill stocks C, C', may be ranged and fixed so as
to boro only vertically or horizontally, then the guides A on the main frames
A, A, might be formed on the front instead of on the inner sides, as shown for the
saddles D of the drill bed H¹, to be traversed up and down on their guides All by
screws or racks, in which case the drill bed H₁ could be made longer than the
distance between the main frames A, A1, and so carry more drill stocks C, C¹, or
give a greater range of traverse for these, and the traversing table or tables R might
be also lengthened to correspond.
Figure 8 on Sheet 3 of the Drawings is a plan, and Figure 9 is a side elevation
of a portable arrangement or modification of this improved multiple drilling
machine suitable for girders Z, Z¹, or other long and heavy work which cannot be
readily moved and must be bored on a framing erected for the purpose, and Figure
10 shows the same machine on a smaller scale as boring holes in a large girder
Z, Z. This machine consists of two main vertical end guide frames A, A", on a
strong sole plate A* carried and swivelling on a central joint pin or eye at 7 in the
frame of the traversing carriage. A carrying the whole. The drill stock guide beds
H', H', and their raising and lowering saddles D, D, similar to those shown in Figure
1 and 2, but duplicated in this case, are mounted on their vertical guides A" on the
outside of the main end frames A, A¹, and these saddles D, D, have V or dovetailed
recess guides D, D"; formed on their outer faces horizontally, into which strong
transverse slides D, D, work, carrying at their front ends the bearings of the
end gudgeons H, H, of the swivelling longitudinal beds 'H' of the drill stocks C, C¹,
and also all the drilling mechanism. These two guide beds H, H¹, carrying the
drill saddle and stocks C, C', are mounted one at the top, and shown as boring
vertically over the work in the central web Z of the girder Z, Z¹, either at the
longitudinal or transverse joints, and the other or lower as boring horizontally along
the front face or one of the flanges Z of the girder Z, Z1, in longitudinal or vertical
rows, and these guide beds H¹ have their gudgeons H, H, and the drilling shafts H*
through the centre of the box beds H¹ so as to drive each drill spindle c by a short
intermediate axis K³ working out through the sliding saddles C and drill stocks C¹
both made in two separate parts in this case, and by two pairs of bevel wheels, the
one pair K actuated by the shafts He gearing into each other inside the guide
bed B, and the other pair K³ outside the drill stock C, C', and one of them being
fixed on and actuating the hollow driving spindle of the drill spindle c so that the
drill stocks C₁ are enabled to be swivelled round on their saddles C on the centre
of the said short transmitting bevel wheel shaft K³, and the drills c can be made
to bore at any angle in this longitudinal direction as well as transversly by
oscillating on the saddles C on their beds H', H', which in turn swivel on their
gudgeons, H, H. The feeding screw c³ of these swivelling drills c¹ is actuated by a
light spindle c carried on the swivelling head stock C¹ parallel to the drill spindles
c actuated by a spur wheel on the hollow driving spindle of the drill spindle C, and
a pinion on this light spindle c' so as to actuate the short screw spindle c
which work into the screw wheel c on the back end of the feeding screw c³, by a
pair of bevel pinions c on these shafts c³, c, gearing into each other, or the drills
might be fed in by actuating the screw shaft by means of pulleys and cards or
bands, as shown in Figures 1 and 2, in place of the light intermediate shaft c
The swivelling of the drill stocks c" on their saddles C allows the drills c¹ to be set
to bore holes in the curved sides of girders or other work at right angles to the
tangential line of the curve where the holes are being bored at the time, such as in
bowstring girders or arched work. The slide beds H¹ of each of these swivelling
drill stocks C, C₁ are oscillated and held by a screw I¹¹, and toothed segment 1³,
and a plain rimmed segment or sector wheel I, as in the former arrangement, shown
and described in reference to Figures 1 and 2.. But the main shafts H²; driving the
drills as described through them, may be driven in one or two, ways. First,
eachi shaft is driven direct by crank discs T on its outer ends with the crank pins at
right angles; and connecting rods, with the usual guides only indicated by the dotted
centre lines t in the Drawings; from small horizontal steam cylinders or engines

page_text: T¹ mounted on the back end of the long lateral slide frames D₁₁, carrying each drill
bed with their drill stocks C, C¹, and set of drills c¹, so that these may be
worked separately at any desired speed, or stopped while the other set is working.
In this case the swivelling table A' of the carriage A³ carrying the whole, has a
steam boiler U mounted on it, preferably at the back as shown, so as to counter-
balance the weight of the drill stocks C, C', and beds H', with their working
gearing in front. The steam is led direct to the different cylinders or engines T
by steam connecting pipes and controlling valves of their own. Which pipes have
universal joints or flexible connecting parts, to allow of the motion of the frames
D", D, carrying the engine and gearing; or when desired long flexible pressure
resisting steam pipes might be used to convey the steam from stationary steam
boilers, Or second, these shafts could be driven through bevel gearing at either
end, similar to that shown in Figures 5, 6, and 7, for, actuating the main shaft H³,
or by plain or grooved pulleys driven by endless driving bands or ropes, when
these are carried and used through the work-shop, or building yard. Each pair of
saddles D and their frames D at opposite ends of the machine (with the upper
and lower beds H' and their set of drills) are actuated or raised and lowered
simultaneously by a separate pair of screw spindles D¹, turning in nuts in tho
sliding saddles D and each actuated by the screw wheels E on their upper ends
gearing into the screws El on the cross shafts F on the top of the frames A, A',
and worked by the hand wheels f¹.
Although the machine has been described with a double set of drills to stocks
C, C, and drills c¹, and arrangements of their carrying beds H³, saddles D, slide
frames D, and motive engines T', or driving gear, this being the more complete
tool for boring two sets of holes at a time, one set boring from above the work and
the other set boring along the two outsides or flanges Z¹ of the girders Z, Z1, for
which this turn table or bed frame machine is designed, yet it will be evident that
one set of drills would answer in this machine, in which they are mounted on a
swivelling slide bed H¹, as they are thus enabled to bore the vertical holes from
over the work, and the horizontal edges from the side afterwards. For the purpose
of getting the drills c' as close to the work as possible for steadiness in boring deep
beams, the carriage frame or top A carrying the whole, and on which the sole plate
A of the machine turns or swivels, is mounted on two strong transverse dovetailed
or other slide bearing frames 1, 71, carried on the axles and wheels X2, X³, and tra-
versing at their extreme outer ends, so that the whole frame of the machine can be
shifted on these by a screw toothed rack V and screw V₁ ranged and turned by a
spindle with a grocve and feather, or a square spindle V on each slide frame 1
turned by a hand spanner or crank handle at vi at both ends of the machine.
Thus the machine is traversed laterally to and from the work over these wheel
frames and the line of rails W, on which the machine travels along both sides of
the girder, as shown particularly in Figure 10, in which a double line of rails W, W,
is shown on both sides of the work or girder Z, Z¹, being bored. For this purpose the
whole machine is made to turn by the centre pin and eye in its swivelling bed plate
A and top frames A on the carriage, so as to turn the front of the machine and drills
right round to face the girder Z, Z'; or other work, which is built up or put together
between the rails W, without turning the carriage by its wheels on the rails W;
which would be difficult in the confined space of a shop and building yard without
the expense of a railway turn table, while by a simple arrangement of leading the
two lines of rails W, W, to cross each other at one or both ends of the shop or work
floor, and fitting them with switch and crossing points, as shown at w, w, the carriage
can be shunted from one set of rails W on to the other in the same manner that
ordinary railway trains or carriages are shunted from the up on to the down line,
and vice versa, and swivelled round to drill holes in the other flange Z¹ of the girder
Z, Z: The machine may be made to traverse the rails by means of a hand wheel X
on a spindle held in a small bracket at the back of the carriage frame, and having
a spur pinion X on it gearing into a spur wheel X" on the back end of the carrying
+

page_text: wheel axle X2, and thus causing a pair of these carriage wheels X³ to revolve, and
move the carriage and machine along the rails.
In this modification of portable drilling machine, in which the drill bed H¹ and
the drill stocks C, C₁, both swivel with the drills ranged in a longitudinal row, the
bed might have a complete screw wheel on it, as shown by the dotted circle at I³
in Figure 9, and be turned quite half round, and the drill c turned round to the
front so as to bore on the lower side of the bed H' as well as on the upper sides,
and to drill longitudinal rows of holes low down close to the carriage.
When it is desired to make this machine only bore -longitudinal rows of holes.
vertically with the upper set of drills, and horizontal rows with the lower set, it
will be evident that their slide beds H, H, might be fixed on their raising and
lowering saddles D, D, and so dispense with the swivelling mechanism. The
carriage carrying the whole machine may be traversed on its rails by gearing con-
nected to one or both of the running wheel shafts X2 by power through an inter-
mediate shaft or gearing applied to the pinion shaft X' instead of the hand wheel X.
And the carriage might be secured or firmly held down to the rails W on the front
or both sides by screw clips or other grippers over the head of the rails W, the
chairs being secured to the sleepers, and the sleepers passing under the heavy
beam bring bored would effectually prevent the lifting or canting of the machine
while boring. Although not so described it will be understood that for some classes
of light girders or other work to be bored that this might be mounted on low
carriages or trucks traversed on rails in front of and under the drills c¹ and, drill
beds of this drilling machine, the tables of which carriages would have a trans-
verse lateral motion given to them by slides, as r², r, as described in reference to
that of the drill carriage A³, and in which case the carriage A need not be so.
mounted and traversed also.
Although the sliding saddles D have been described as raised and lowered, or
moved by screw spindles D', these might be thus actuated by screw racks or by
racks and pinions carried on the raising and lowering saddles D, and a horizontal
spindle carried on bearings on each side of the pinion, and a screw wheel on the
outer end actuated by a screw on a short intermediate spindle carried over and
actuated by spur wheels at the back of the crank discs T of the main longitudinal
motive shaft H2, the rack pinion spindles sliding on a groove and feather either
through the pinion on the screw wheel at its outer end, and the intermediate screw
spindle being fitted with a friction or other clutch for throwing the raising or
lowering mechanism out of gear, and a tightening screw is fitted on each saddle to
fix them and prevent vibration.
Having thus particularly described my said Invention, and the manner in
which the same is to be performed, I wish it to be understood that I do not confine
myself to the precise details herein described or delineated, but what I believe
to be novel and original, and therefore claim as the Invention secured to me by
the hereinbefore in part recited Letters Patent is,-
First. The general construction or arrangement of the parts of stationary or
portable traversing multiple drilling machines with one or two longitudinal
swivelling beds (H¹, H¹), each carrying a set of drill saddles and stocks (C, C¹,), so
as to bore holes horizontally, vertically, or at an angle in the work in front or.
below, as large marine boilers, girders, or other structures, when put together, or
the parts of these on travelling bed tables (R), or it might be movable carriages in
front, all substantially as herein described in reference to and shown in the accom.
panying Drawings, or any mere modification thereof.
Second. The general construction and arrangement of the parts of stationary or
portable multiple drilling machines with one or two longitudinal swivelling beds
(H', H',), each carrying a set of drill saddles and stocks (C, C₁,), so as to bore holes
horizontally, vertically, or at an angle in heavy structures in front of or below them
as marine or other boilers or girders, or the screwing or tapping of holes in these,
ali substantially as shown and described in reference to Figures 1 to 4 on Sheet 1
of the accompanying Drawings, or any mere modification thereof.

page_text: Third. The general arrangement of gearing and fittings for turning large marine
boilers or other round structures in front of stationary multiple drilling machines,
all substantially as and for the purposes herein described in reference to and
shown in Figures 1 to 4 of the accompanying Drawings, or any mere modification
thereof.
Fourth. The general construction and use of the said stationary multiple drilling
machines, with a traversing table or tables (R) for carrying the work to be bored
beneath and in front of the said longitudinal swivelling beds (H', H',), with their
drill saddles and stocks (C, C',), all substantially as herein described in reference to
and shown in Figures 5 to 7 on Sheet 2 of the accompanying Drawings, or any
mere modification thereof.
Fifth. The general construction and arrangement of the parts of portable or
traversing multiple drilling machines travelling on rails, with one or two longitu-
dinal swivelling beds (H', H',), each carrying a set of drill saddles and stocks (C, C¹,)
for boring sets of holes over or in the face of heavy structures such as girders or
bridgework, when they are put together and cannot be readily moved, all substan-
tially as and for the purposes herein described in reference to and shown in Figures
8 to 10 on Sheet 3 of the accompanying Drawings, or any mere modification
thereof.
Sixth. The construction of portable multiple drilling machines with swivelling
and slide beds (A) on under carrying frames (A5) and slides (r), substantially as
and for the purposes herein described in reference to and shown in Figures 8 and 9
of the accompanying Drawings, or any mere modification thereof.
Seventh: The arrangement of rails (W) with angular switch and cross points
(w, w',) for the shifting, shunting, and traversing of portable multiple drilling
machines with swivelling beds (A) for turning these machines to work, and bore
holes along both sides of stationary structures, all substantially as and for the
purposes herein described in reference to and shown in Figure 10 on Sheet 3 of the
accompanying Drawings, or any mere modification thereof.
In witness whereof, I, the said Hugh Smith, have hereunto set my hand
and seal, this Fourth day of March, in the year of our Lord One thousand
eight hundred and eighty.
Witness,
WALLACE FAIRWEATHER, C.E.,
Patent Agent,
96, Buchanan Street,
Glasgow.
HUGH SMITH. (L.S.)