Improvements in Boring, Screwing, Tapping, and Milling Machines, suitable for use in the Manufacture of Parts of Water Tube Boilers and similar Work.
Year: 1897

page_text: Date of Application, 27th Oct., 1897
Complete Specification Left, 23rd June, 1898-Accepted, 15th Oct., 1898
Improvements in Boring, Screwing, Tapping, and Milling Machines,
suitable for use in the Manufacture of Parts of Water Tube Boilers
and similar Work.
I, JOSEPH WHITWORTHI HULSE, of Ordsal Works, Salford, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to improved constructions and arrangements of
boring, screwing and milling machines for boring, internally screwing or tapping
and milling various parts of water tube boilers such as sleeves or running joints,
check nuts or backnuts, feed collectors and similar work.
In one construction of boring and internal screwing or tapping and milling
machine according to this invention there is a slide bed mounted on standards
and provided with fast and movable headstocks arranged at opposite ends of the
bed, similarly to an ordinary lathe. Between the headstock centres is mounted a
bar that is adapted to be rotated by the driving spindle in the fast headstock, and
is provided with one or more boring and screwing tools or taps, or a milling cutter.
Also upon the bed is mounted a sliding carriage provided with self acting feed
traverse and quick hand traverse whereby it can be moved along the bed. The
self acting feed traverse may be operated from a longitudinal screw driven through
change gearing from the driving spindle which may be provided with cone pulleys
as in a lathe.
Upon the sliding carriage is mounted a transverse slide that serves to facilitate
the setting of the work and removal of the boring and screwing bar. Upon the
transverse slide is mounted a vice or gripping device for holding the work to be
operated upon in position. The gripping device comprises according to one con-
struction two brackets that are adjustable relatively to one another in a longitu-
dinal direction and parallel to the axis of the bar, to suit the different lengths of
objects to be dealt with. Each of the brackets has a circular hole through it to
admit of the passage of a boring and screwing bar. At the inner end of each
bracket is fixed a semi-circular or approximately semi-circular ring for support-
ing the object to be bored or screw threaded and a serrated ring for gripping the
same and holding it endwise. One of the serrated rings is attached to a sliding
bush which is formed with an external screw thread and is arranged to be moved
endwise in the bracket by a worm wheel that acts on the bush as a rotating nut,
is prevented from moving endways, and is arranged to be rotated by a worm.
serrated rings are made readily detachable so that they can be easily replaced by
others of a different diameter to suit the particular object to be operated upon.
For milling, the gripping device is made of less height, or the work to be milled
may be fixed directly to the transverse slide by which in either case it is fed trans-
versely below the milling cutter, carried by the rotary bar between the centres of
the headstocks
The

page_text: In another construction of machine according to this invention suitable for
boring milling and internal screwing or tapping there is or are arranged upon
the slide bed one or more longitudinally sliding upright frames upon which or
each of which a spindle carriage or slide (preferably counter-balanced) is so
arranged as to be capable of being moved up and down. The carriage or slide
is provided preferably with a horizontal spindle or it may be vertical that is
mounted in a sliding sleeve or tube and is rotated in either direction by well known
means such as spur and bevel reversing gearing from one or more vertical shafts,
which is or are in turn driven from a longitudinal shaft provided with a driving
head-stock at one end of the bed. A raised bed or base-plate to which the work
to be operated upon may be secured, extends along the front of the machine.
Suitable mechanism is provided 1st for imparting a quick power traverse to the
sliding upright frame or frames along the bed in either direction;
2nd for imparting a traverse by hand for feeding or adjusting the upright
frame along the bed;
3rd for imparting a traverse by hand for feeding or adjusting the spindle slide
or slides on the upright frame or frames, and
4th for imparting a slow traverse to the spindle by hand or power for feeding
and a quick traverse by hand for advancing or withdrawing spindle when setting
the work.
(1) The quick power traverse of the upright frame or each such frame may be
effected by a longitudinal screw mounted in the main slide bed, driven from one
longitudinal driving shaft through a transverse shaft and bevil gearing for rever-
sing, and engaging with a nut that is formed as a worm wheel and gears with
a worm on the upright frame.
(2) The hand traverse for feeding or adjusting the upright frame along the bed
may be effected by a hand wheel mounted on the spindle slide and acting through
bevil gear, vertical shaft worm and worm wheel which then acts as a rotating
nut on the longitudinal screw.
(3) The hand traverse for feeding or adjusting the spindle slide up or down the
upright frame may be effected by a hand wheel on the slide acting through a worm
upon a worm wheel carried by the slide and rotating as a nut on a vertical screw
carried by the upright frame.
(4) The slow feed traverse to the sliding sleeve (carrying the spindle) by power
may be effected by change wheels driven from the outer end of the spindle itself,
through worm gearing and rack and pinion. Two hand wheels mounted on the
carriage and acting the one through a pinion direct and the other through bevil
gearing transverse shaft, worm, worm wheel and pinion, on a rack on the sliding
sleeve serve respectively for imparting a quick traverse or a slow traverse to the
sleeve and spindle by hand.
220
1
Improvements in Boring, Screwing, Tapping, and Milling Machines,
suitable for use in the Manufacture of Parts of Water Tube Boilers
and similar Work.
WC, WILLIAM PERCY DRABBLE, of 86, King Street, Manchester, in the County of
Lancaster, Merchant, and FREDERICK EDMUND BRACEWELL, of 144, Princess Street,

page_text: Manchester, aforesaid, Hardware Alerchant, executors of the late Joseph Whit-
worth Hulse, of 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 follow-
ing statement:--
This invention has reference to improved constructions and arrangements of
boring, screwing and milling machines for boring, internally screwing or tapping
and milling various parts of water tube boilers such as sleeves or running joints,
check nuts or backnuts, feed collectors and similar work.
In the accompanying drawings Figs. 1 to 4 inclusive illustrate one construction
of boring and internal screwing or tapping and milling machine according to
this invention, Fig. 1 being a side elevation of the machine, Fig. 2 a sectional view
to a larger scale of a transverse slide and parts carried thereby and Figs. 3 and 4
inner face views of two brackets forming a gripping device for the work. Fig. 4*
shows a
boring bar with boring tool, and Fig. 4 shows the bar with a tap or
internal screwing tool.
In this construction, 1 is a slide bed mounted on standards and provided with
fast and movable headstocks 2 and 3 respectively arranged at opposite ends of
the bed, similarly to an ordinary lathe. Between the headstock centres is mounted
a bar 4 that is adapted to be rotated by the driving spindle in the fast headstock,
and is provided with one or more boring and screwing tools or taps, or a milling
cutter. In Fig. 1 the said bar 4 is shown provided with a boring tool 5 and an
internal screwing or tapping tool 6. Also upon the bed 1 is mounted a sliding
carriage 7 provided with self acting feed traverse and quick hand traverse whereby
it can be moved along the bed. The self acting feed traverse may be operated
from a
longitudinal screw 8 driven through change gearing 8" from the driving
spindle which may be provided with cone pulleys as in a lathe. For hand
traverse a rack 9 and pinion 10 are provided.
Upon the sliding carriage 7 is mounted a transverse slide 11 that serves to
facilitate the setting of the work 12 and removal of the boring and screwing bar 4.
Upon the transverse slide 11 is mounted a vice or gripping device for holding
the work to be operated upon, in position. The gripping device comprises accord-
ing to the construction shown, two brackets 13 and 14 that are adjustable rela-
tively to one another in a longitudinal direction and parallel to the axis of the
boring and screwing bar 4, to suit the different lengths of objects to be dealt with.
Each of the brackets has a circular hole through it to admit of the passage of the
boring and screwing bar. At the inner end of each bracket is fixed a semi-circular
or approximately semi-circular ring 15 for supporting the object to be bored or
screw-threaded, and a ring 16 which serrated on its face as shown at 16ª. One
of the serrated rings 16 is attached to a sliding bush 17 which is formed with an
external screw thread and is arranged to be moved endwise in its bracket by a
worm wheel 18 which acts on the bush as a rotating nut, is prevented from moving
endways, and is arranged to be rotated by a worm 19. The work is gripped and
held endways between the two rings 16 the serrations 16* on which serve to effec-
tually prevent it rotating whilst being bored or screw threaded. The serrated
rings are made readily detachable so that they can be easily replaced by others of
a different diameter to suit the particular object to be operated upon. For milling,
the work to be milled may be fixed in the gripping device or directly to the trans-
verse slide; in the latter case it is fed transversely below a milling cutter carried
by the rotary bar between the centres of the headstocks.
Figs. 5, 6 and 7 show respectively in rear elevation, end elevation and plan,
another construction of machine according to this invention suitable for boring,
milling and internal screwing or tapping.
In this construction there is or are arranged upon the slide bed 20, one or more
longitudinally sliding upright frames 21, one only being shown, upon which
or each of which a spindle carriage or slide 22 is so arranged as to be capable of

page_text: being moved up and down, and is preferably counterbalanced by a weight (not
shown) connected to it by a chain 22ª passing over a wheel 22b. The carriage or
slide is provided preferably with a horizontal spindle 23 (or in some cases it may
be vertical) that is mounted in a sliding sleeve or tube 24 and is rotated in either
direction by well known means such as spur gear 25 and bevel reversing gear-
ing 26 (with clutch lever 26³) from a vertical shaft 27, which is in turn driven
from a longitudinal shaft 28 provided with a driving headstock 29 at one end of
the bed. 23 is the nose of the spindle 23 which carries the boring tool, tap, or
milling cutter. A raised bed or base-plate 30 to which the work to be operated
upon may be secured, extends along the front of the machine.
Suitable mechanism is provided, 1st for imparting a quick power traverse to
the sliding upright frame 21 or each such frame along the slide bed 20 in either
direction;
2nd. For imparting a traverse by hand for feeding or adjusting the said upright
frame 21 along the said bed;
3rd For imparting a traverse by hand for feeding or adjusting the spindle
slide 22 or each such slide on the upright frame 21 or each such frames; and
4th. For imparting a slow traverse to the spindle 23 by hand or power for feed-
ing and a quick traverse by hand for advancing or withdrawing the spindle when
setting the work.
(1) The quick power traverse of the upright frame 21. or each such frame, is
effected in the example shown, by a longitudinal screw 31 that is mounted in the
main slide bed 20 and is driven from the longitudinal driving shaft 28 through a
transverse shaft 32 and bevel gearing 33 with clutch for reversing, and bevel
gearing 33, the said screw 31 engaging with a nut 34 carried by the frame and
formed as a worm wheel that gears with a worm 35 which is mounted on the up-
right frame 21 and prevents the said worm-wheel from turning.
(2) The hand traverse for feeding or adjusting the upright frame along the bed
is effected, in the example shown, by a hand wheel 36 mounted on the spindle
slide 22 and acting through bevel gear 37, vertical shaft 38, worm 35 and worm
wheel 34 which then acts as a rotating nut on the longitudinal screw 31. In this
case the screw 31 is used as a fixed screw, being fixed by means of a locking
screw 51 and pad 52 (Fig. 7).
(3) The hand traverse for feeding or adjusting the spindle slide 22 up or down
the upright frame 21 is, in the example shown, effected by a hand wheel 39 on
the slide acting through a worm 39° upon a worm wheel 39 carried by the
slide and rotating as a nut on a vertical screw 40 carried by the upright
frame 21.
(4) The slow feed traverse to the sliding sleeve 24 (carrying the spindle 23)
by power, is effected in the example shown, by change wheels 41 driven from the
spindle 23 itself, and acting upon the sleeve through worm 46 and worm wheel 46b
through bevel gear 47, shaft 48, worm 49, worm wheel 50, and rack pinion 44
which gears with a rack 43 on the said sleeve. Two hand wheels 45 and 46
mounted on the carriage and acting the one (45) through the pinion 44 direct,
and the other (46) through bevel gearing 47. transverse shaft 48, worm 49, worm
wheel 50 and pinion 44, on the rack 43 on the sliding sleeve 24, serve respectively
for imparting a quick traverse, or a slow traverse to the sleeve 24 and spindle 23
by hand.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
1. A machine suitable for boring, internal screwing or tapping and milling,
constructed arranged and operating substantially as. herein before described with
reference to and shown in Figs. 1 to 4 inclusive of the accompanying

page_text: 2. A machine suitable for boring, internally screwing or tapping and milling,
constructed arranged and operating substantially as hereinbefore described with
reference to and shown in Figs. 5 to 7 inclusive of the accompanying drawings.
Dated this 23rd day of June 1898
For the Applicant,
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.