Year: 1887

page_text: WILLIAM WILSON HULSE of the Ordsal Works Salford in the County of Lancaster
Engineer do hereby declare the nature of this invention to be as follows:-
In a Machine constructed in accordance with this Invention an upright slide is
employed carrying one or more drill spindle carriages which may be traversed up and
down the upright slide as required. Each spindle carriage is by preference provided
with two horizontal drill spindles, one of them being mounted in bearings in the
carriage itself, and the other in a pivotted bracket mounted on a transverse slide
movable in guides on the spindle carriage by means of twin coupled screws which act
upon the transverse slide so as to prevent it from cross winding in its guides. The
work to be drilled is carried upon a table which may comprise one transverse and one
longitudinal slide, and a rotary slide. The table is mounted on a bed which is formed
with guides for the longitudinal slide of the table, and to which the upright slide for
the spindle carriages is secured.
When a cylindrical object such as a boiler shell is being drilled it is secured upon
the table with its axis vertical, and is so adjusted that the axes of those drill spindles
which are carried in bearings in the spindle carriages themselves, stand radially to
the object, and the axes of the other spindles are adjusted so as also to stand radially
to it, by means of the pivotted brackets. The rotary slide of the table may be pro-
vided with two worm wheels for giving it rotary motion, one of the wheels being
accurately formed and pitched to be used in conjunction with dividing mechanism for
pitching the holes to be drilled circumferentially, and the other being employed for
rotating the table, when the dividing mechanism is not in use, so as to save the
accurately pitched wheel from excessive wear. The worms for actuating the worm
wheels can be put in or out of gear with the wheels at will. The rotary slide of the
table is provided with a V slide and adjustable guide plates for taking up wear.
Dividing mechanism may be provided in conjunction with the mechanism for
traversing the spindle carriages for pitching holes vertically.
The inner bearings of the drill spindles may be made to overhang the spindle
carriages considerably so that when drilling small objects they will project considerably

page_text: over the table, and render the use of excessively long drills unnecessary. The driving
shaft of the Machine is by preference placed horizontally and mounted in hearings
in the bed, and drives an upright shaft (carried by the upright slide) whence are
driven horizontal shafts which communicate rotation to the drill spindles through
suitable mechanism.
The drill spindles may be moved in and out for imparting simultaneous automatic
feed and return movements to the drills by means of crank actions having quick
return strokes and acting on the spindles through suitable mechanism. In the
intervals during which the drills are clear of the work in the course of these to and
fro movements, the dividing mechanism may be operated so as to turn the object into
new positions for drilling. Each drill spindle may be put out of gear separately with
the automatic crank mechanism, and be run in or out by hand, and be again put in
gear with the automatic mechanism at any required point of its traverse. The crank
actions may be driven either from the drill spindles or from some other shaft of the
machine, different arrangements being sometimes employed for different spindles in
the same Machine.
Sometimes only one and sometimes three or more drill spindles may be provided
on each spindle carriage according to the requirements of the work. Sometimes
instead of the drill spindles being withdrawn by the crank actions, they may be fitted
with pistons working in cylinders, so that when the spindles are moved outwards a
vacuum is formed in the cylinders which withdraws the spindles during the return
strokes of the crank actions.
The crank actions and vacuum cylinders and the mechanism connected there with
for traversing drill spindles may be applied to drilling machines of different types to
that described above.
Dated this Thirtieth day of November 1887
HY. C. CARVER,
Agent for Applicant.

page_text: I WILLIAM WILSON HULSE of the Ordsal Works Salford in the County of Lancaster,
Engineer, do hereby declare the nature of this invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement and accompanying drawings
In a Machine constructed in accordance with this invention an upright slide is
employed carrying one or more drill spindle carriages which may be traversed up and
down the upright slide as required. Each spindle carriage is by preference provided
with two horizontal drill spindles, one of them being mounted in bearings in the
carriage itself, and the other in a pivotted bracket mounted on a transverse slide
moveable in guides on the spindle carriage by means of twin coupled screws, which
act upon the transverse slide so as to prevent it from cross winding in its guides.
The work to be drilled is carried upon a table which may comprise one traverse and
one longitudinal slide, and a rotary slide. The table is mounted on a bed which is
formed with guides for the longitudinal slide of the table, and to which the upright
slide for the spindle carriages is secured.
When a cylindrical object such as a boiler shell is being drilled it is secured upon
the table with its axis vertical, and is so adjusted that the axes of those drill spindles
which are carried in bearings in the spindle carriages themselves stand radially to the
object, and the axes of the other spindles are adjusted so as also to stand radially to it
by means of the pivotted brackets. The rotary slide of the table may be provided
with two worm wheels for giving it rotary motion, one of the wheels being accurately
formed and pitched to be used in conjunction with dividing mechanism for pitching
the holes to be drilled circumferentially, and the other being employed for rotating
the table when the dividing mechanism is not in use so as to save the accurately
pitched wheel from excessive wear. The worms for actuating the worm wheels can
be put in or out of gear with the wheels at will. The rotary slide of the table is
provided with a V slide and adjustable guide plates for taking up wear. Dividing
mechanism may be provided in conjunction with the mechanism for traversing the
spindle carriages for pitching holes vertically.
The inner bearings of the drill spindles may be made to overhang the spindle
carriages considerably, so that when drilling small objects they will project consider-
ably over the table, and render the use of excessively long drills unnecessary. The
driving shaft of the Machine is by preference placed horizontally and mounted in
bearings in the bed, and drives an upright shaft (carried by the upright slide) whence
are driven horizontal shafts which communicate rotation to the drill spindles through
suitable mechanism. The drill spindles may be moved in and out for imparting
simultaneous automatic feed and return movements to the drills by means of crank
actions having quick return strokes, and acting on the spindles through suitable
mechanism.
In the intervals during which the drills are clear of the work in the course of these
to and fro movements, the dividing mechanism may be operated so as to turn the
object into new positions for drilling. Each drill spindle may be put out of gear
separately with the automatic crank mechanism, and may be run in or out by hand,
and be again put in gear with the automatic mechanism at any required point of its
traverse. The crank actions may be driven either from the drill spindles or from som

page_text: other shaft of the Machine, different arrangements being sometimes employed for
different spindles in the same Machine. Sometimes only one and sometimes three or
more drill spindles may be provided on each spindle carriage according to the require-
ments of the work. Sometimes instead of the drill spindles being withdrawn by the
crank actions, they may be fitted with pistons working in cylinders so that when the
spindles are moved outwards a vacuum is formed in the cylinders which withdraws
the spindles during the return strokes of the crank actions." The crank actions and
vacuum cylinders and the mechanism connected therewith for traversing drill
spindles may be applied to drilling machines of different types to that described
above.
In the accompanying drawings Figs. A and B are two elevational views of a
machine constructed in accordance with this invention; and Figs. C, D, and E are
three elevational views, and Fig. F a plan view showing one of the drill spindle
carriages on an enlarged scale-1 is the bed of the Machine, 2 the upright secured to
it, and 3, 31 are two drill spindle carriages each having two drill spindles. The
Table on which the work is secured is moveable along the bed in guides as shown and
comprises transverse and longitudinal slides 4, 4' and a rotary slide 5 having two
worm wheels 6, 7, which can be used alternatively for rotating it, and is provided
with a V slide and adjustable guide plates 38, 38 for taking up wear.
The teeth of
the worm wheel 6 are accurately formed and pitched for rotating the table for
dividing purposes and the worm wheel 7 is for rotating it for other purposes not
requiring such great uniformity of rotation. The wheel 7 is thus employed for
saving 5 from excessive wear and tear. Either of these worm wheels can be put in or
out of gear by sliding the corresponding worm and the bracket which supports it
end wise until the worm is either in or out of gear with the wheel. On each of the
spindle carriages, 9 is the spindle carried in bearings formed on the carriage and
10 the spindle mounted in bearings in a bracket 11 which pivots about a centre 12 on
a transverse slide 13. It will be seen that the inner bearings of the spindles overhang
the spindle carriages considerably, so that when drilling small objects they will project
over the table and render the use of excessively long drills unnecessary. The slide 13
is moveable along guides on the spindle carriage by twin coupled screws 14, 15; and
the pivotted bracket 11 can be locked in any required position by means of a lock
bolt and segmental slot as shown in Figs. D and F. 16 is a vertical shaft carried by
the upright 2; it is driven through the cone pulley 47, horizontal driving shaft 17
and bevel wheels as shown in Figs. A, B, and drives the drill spindles through shafts
and bevel wheels as shown in Figs. C, D, F. 18 is another vertical shaft carried by
the upright 2; it is driven from 16 through bevel wheels shaft and worm, and worm
wheel as shown in Figs. A, B, and it serves to impart feed motion to each of the drill
spindles 9, 9, through identical mechanism in each case as follows: a worm 19
(Figs. E, F) drives a worm wheel 2 mounted loose on a horizontal shaft 21 and
gearing into a wheel 22 on a shaft 23, on which is also secured a crank piu disc 24.
The pin of the crank disc enters into a slot in a spur wheel segment 25 and operates
the segment to and fro, the movement in one direction being quicker than in the
other. The segment gears into a spur wheel 26 which is free to revolve on the
shaft 2.1 except when in gear with a clutch operated by a handle 27. On the shaft 21
is also a spur wheel 28 gearing into a rack 29 on the drill spindle 9. Thus when the
spur wheel 26 is in gear with its clutch the oscillations of the segment 25 impart a
feed and quick return movement to the drill spindle. 30 is a hand wheel for operating
the feed mechanism manually when the clutch to the wheel 26 is out of gear. The
feed and return movements of the drill spindle 10 are effected (as shown in Figs. D, F)
through a similar oscillating spur segment to that already described, but in this case
the crank disc is operated from the drill spindle through the worm: 31, worm wheel 32,
bevel wheels 33, 34, shaft 35, worm 36 and worm wheel 37. By means of the hand
gear
and clutches the drill spindles can cach be independently run in and out and put
in gear with the automatic crank mechanism. The spindle carriages are traversed up
and down the upright 2 automatically by means of a traversing screw 39, driven in
either direction from the shaft 17 through a nest of clutch bevel wheels as shown

page_text: at 40, an upright shaft 41, worm and worm wheel shown at 42, horizontal shaft 43,
and bevel wheels, shown at 44. The traversing screw 39 is fitted with two nuts 391
(one corresponding to each spindle carriage) formed also as worm wheels which gear
into two respective worms 45 carried on shafts 46 on the respective spindle carriages.
Only one each of these nuts and worms is shewn-see Fig. F. When the traversing
screw is rotated the nuts 391 are moved up or down as the case may be (without being
themselves rotated) and impart corresponding movements to the spindle carriages.
For traversing the spindle carriages by hand the nuts 391 are rotated through the
worms 45 and shafts 46, and in the meantime the traversing screw 39 may remain
stationary. The worm wheel 7 of the table is driven by a separate belt through the
cone pulley 48, shaft 49, bevel wheels shown at 50 and shaft 51. When a cylindrical
object such as a Boiler shell is to be drilled it is secured upon the table with its axis
standing vertically, and it is adjusted by means of the transverse slide 4 so that the
axes of the spindles 9, 9, point to the axis of the object; and the spindles 10, 10, are
adjusted by means of the pivotting brackets which carry them so that their axes also
point to the axis of the object. For pitching holes in the object either circum-
ferentially or vertically a dividing catch box 52, swing frame 53 and change wheels
as shown are provided the mechanism being put in gear either with the worm S
(through a cross shaft and bevel wheels not very clearly shown in the drawings and
through the shaft 54 carrying the worm 8), or with the shaft 43. In Fig. B the
change wheels are shown in gear for both circumferential and vertical dividing. The
dividing mechanism may be operated in the intervals during which the drilling tools
are held clear of the work by the feed and return mechanism of the drill spindles.
Fig. G shows an alternative method of withdrawing the drill spindles from the
work by atmospheric pressure. In this arrangement 55 is a cylinder and 56 a piston
working therein and connected to the drill spindle 57 as shown. As the drill spindle
moves out a partial vacuum is produced in the cylinder at the back of the piston 56
which enables the pressure of the atmosphere to push back the spindle during the
return movement of the crank pin already described.
Figs. E and K show another alternative arrangement according to which the forward
traverse of the drill spindles is effected either automatically or manually and the
return traverse manually only. In this arrangement (which is in practise generally
found preferable to the other methods described for traversing the drill spindles) the
parts 31, 32, 33, 34, 35, 36, 37 remain as already described, and a spur wheel 58 takes
the place of the crank pin dise 24; 58 gears into a spur wheel 59 connected with a
ratchet wheel 60, into which takes a pawl 61 mounted on the hand wheel 62, which is
keyed fast upon the shaft 21 already described with reference to Figs. D and E.
59 and 60 are mounted loose upon one and the same shaft, so that when the pawl 61
is out of gear the spindle can be traversed manually in either direction and so that
when it is in gear the forward traverse is effected automatically.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. The general arrangement of a Drilling Machine substantially as shown and
described with reference to Figs. A, B, C, D, E, F.
2. The general arrangement of a Drilling Machine substantially as shown and
described with reference to Figs. A, B, C, D, E, F subject to the modifications shown
and described with reference to Figs. H, K.
J
L Candomben 1000
HY. C. CARVER,
Agent for Applicant.