Improvements in Boring and Turning Machines.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Boring and Turning Machines.
I, WILLIAM WILSON HULSE, of the Ordsal Works, Salford, Manchester, in
the County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
:-
This invention has reference to multiple boring and turning machines.
According thereto the frame of the machine is provided with a number of rotary
spindles adapted to carry suitable cutters for operating upon the work which is
secured by suitable means to a work-table arranged at right angles to the spindles
and provided with means for moving it to and fro so that a number of oval holes
may be simultaneously bored in or oval parts turned upon the work. Each spindle
may be driven by a toothed wheel that is fixed to it and gears with a pinion driven
by means of bevel gearing from a longitudinal shaft that is common to all the
spindles and which is driven from another shaft provided with fast and loose
pulleys.
The traversing mechanism for reciprocating the work-table, may consist for
example of a cam arranged to work in a slot or between projections in or carried
by the work table, or of a crank connected to the work table by a link, such means
being driven by suitable mechanism such as shafts and bevel and spur gearing from
one of the toothed wheels on the tool spindles or from the driving shaft that is
common to the several tool spindles.
The machine may be constructed for boring only, or for turning only, or the
machine may be arranged as a combined multiple boring and turning machine, the
boring spindles being arranged along one side, and the turning spindles along
the other side of the machine.
The tool holders carried by the aforesaid spindles may be arranged for enabling
articles with bevel edges to be bored or turned, suitable feeding mechanism being
provided for advancing the tools relatively to the work.
Improvements in Boring and Turning Machines.
1, WILLIAM WILSON HULSE, of the Ordsal Works, Salford, Manchester, 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:-
This invention has reference to multiple boring and turning machines.

page_text: According thereto the frame of the machine is provided with a number of rotary
spindles adapted to carry suitable cutters for operating upon the work which is
secured by suitable means to a work-table arranged at right angles to the spindles
and provided with means for moving it to and fro so that a number of oval holes
may he simultaneously bored in or oval parts turned upon the work. Each spindle
may be driven by a toothed wheel that is fixed to it and gears with a pinion
driven by means of bevel gearing from a longitudinal shaft that is common to all
the spindles and which is driven from another shaft provided with fast and loose
pulleys.
The traversing mechanism, for reciprocating the work-table, may consist for
-example-of-a-cam-arranged to work in a slot or between projections in or carried by
the work table, or of a crank connected to the work table by a link, such-means
being driven by suitable mechanism, such as shafts and bevel and spur gearing
from one of the toothed wheels on the tool spindles or from the driving shaft that
is common to the several tool spindles.
The machine may be constructed for boring only, or for turning only, or the
machine may be arranged as a combined multiple boring and turning machine, the
boring spindles being arranged along one side, and the turning spindles along
the other side of the machine.
The tool holders carried by the aforesaid spindles may be arranged for enabling
articles with bevel edges to be bored or turned suitable feeding mechanism being
provided for advancing the tools relatively to the work.
Referring to the accompanying drawings, throughout which similar parts are
marked with similar reference figures,
Figs. 1 and 2 illustrate in side and end elevation respectively a construction of
machine according to this invention for boring oval holes.
1 is the frame of the machine which is provided with a number of vertical
spindles 2 able to rotate in bearings 3 above a work table to which the work 5 is
secured, it may be by T bolts placed in grooves in the table.
Each spindle is driven by a toothed wheel 6 that is fixed to its upper end and
gears with a pinion 7 mounted on a stud and driven by means of bevel gearing 8, 8ª
from a longitudinal shaft 9 that is common to all the spindles and which is driven
through toothed wheels 10, 11 from another shaft 12 mounted at one end of the
frame of the machine and provided with fast and loose pulleys 13, 13". The toothed
wheels 6 of two adjacent spindles gear with each pinion 7.
The traversing mechanism for reciprocating the work-table 4, which is mounted
upon a slide 4", consists of a cam or eccentric 14 keyed upon a short shaft 15 and
arranged to work between projections 16 carried by the work table the shaft 15
being driven by suitable mechanism, such as a shaft 17, bevel wheels 18, 18ª and
spur gearing 19, 19 from the toothed wheel on the end tool spindle. The
eccentric 14 is shewn encircled by a block 14ª which is held by but can slide up
and down between the projections 16.
The tool holders carried by the spindles 2 are arranged for enabling articles with
bevel edges to be bored and suitable feeding mechanism is provided for advancing
the tools 2ª relatively to the work.
Figs. 3 and 4 illustrate respectively in side and end elevation a machine for
turning oval articles which is similar to the machine described with reference to
Figs. 1 and 2 except that the spindles 2 are provided with turning instead of boring
tools and the work table 4 is provided below each spindle with two sliding
jaws 20, 20 which can be caused to approach each other for the purpose of
gripping the work, or to recede from cach other to release it, by means of
screws 21, 21, or it may be by one screw with right and left hand threads.
Figs. 5 and 6 illustrate respectively in side elevation and in end clevation a
combined boring and turning machine according to this invention.
As will be seen from the drawings the boring spindles 2 are arranged along the
left-hand side (Fig. 6) and the turning spindles 2* along the other side of the

page_text: Fig. an end elevation corresponding thereto; and
Fig. 10 an end elevation of the spindle carrier or slide with certain parts
removed.
The frame 1 of the machine is formed at its upper part with a slide bed 1ª along.
the front face of which there slides a tee-grooved spindle-carrier or slide 2b having
bolted to it the vertical headstocks 2 in which the spindles 2 are mounted. The
headstocks are provided with mechanism which is operated automatically for
feeding and by hand for adjusting, the spindles 2 in the direction of their length.
It comprises a spur wheel 2d on the spindle 2, a fixed spindle 2, a rotary spindle 2
having a hand wheel 2* and a ratchet wheel 2 keyed upon it, loose spur wheels 21
and 2, the latter having a pawl adapted to engage with the ratchet wheel 2, and
spur gear 2 21 and 2 the latter being in sliding connection with the feed screw 2.
The spindles 2 are rotated by means of worm wheels 29 fixed to them, which gear
with worms 30 fixed upon longitudinal shafts 9 that are mounted in bearings 9ª
carried by the slide 2b and are driven through toothed wheels 10 and 11 from a
shaft 12 provided with fast and loose pulleys 13, 13. The shaft 12 is mounted in
a bearing 12 carried by the slide bed 1ª and bearings or guides 12° 12° formed in
the slide 2, and is connected by a feather and groove connection with the toothed
wheel 11, which is held between the bearings or guides 12, 12b and slides along the
shaft 12 as the slide 2b is moved to and fro.
"
In the example illustrated two shafts 9 are provided to enable the spindles to be
placed closer together than would otherwise be possible owing to the space required
by the worm wheels 29; each shaft drives alternate spindles as will be seen on
reference to Fig. 7 in which only one headstock with spindle, etc. is shown in full.
as all are alike, the positions of the remainder being indicated by centre lines only
but the positions of the worms on both the shafts 9 are indicated.
The lower shaft 9 is extended beyond the spindles and is there provided with an
additional worm 31, which gears with a worm wheel 32 keyed to the front portion
of a stud 33 mounted in a long bearing 32 formed in an extension of the slide 2°;
the rear end of the stud 33 is formed with an eccentric or cam 14 and is encircled
by a block 14 which is arranged so that it can move vertically but not horizontally
within a slot 16 formed in an extension of the slide-bed 1, the arrangement being
such that, as the stud is rotated from the shaft 9 through the worm and worm
wheel, it will move the slide to and fro along the slide bed so as to cause the several
:

page_text: tools to follow oval paths and thus bore a number of oval holes in or turn oval parts
upon the work according to the class of tool with which the machine is provided.
The work to be operated upon may be bulted to a work table 4 attached to the
bed of the machine; or it may be held in position by gripping jaws as in the
previously described arrangements.
If desired, the machines may be provided with tool holders adapted to receive
at will either boring or turning tools.
Figs. 11, 12 and 13 illustrate respectively in front elevation, side elevation and
plan a modified arrangement of headstocks with spindles, and other parts.
The arrangement is similar to that shown in Figs. 7 to 10 but each worm
wheel 29 is formed with a part clutch 29" normally in engagement with-a-corre-
sponding clutch ring 29 which is connected to the spindle 2 by a feather and
groove but can be moved endwise along to the spindle and held out of engagement
by means of a lever 29. With this arrangement the rotation of each spindle can
be independently suspended should this become desirable from any cause.
worm wheels 29 that gear with the worms on the upper shaft 9 are arranged above
the corresponding clutch rings which are normally held in engagement with the
worm wheels by springs 29d or other suitable means; the clutch rings on the other
spirdle fall by their own weight into engagement.
The
To enable articles with bevel edges to be bored or turned the lower or outer end
of each spindle is provided with a socket which is formed at an angle to the axis of
the tool spindle corresponding to the bevel it is required to give to the edges being
operated upon and the tool holder, which is provided with two adjustable tools held
in slots at right angles to the axis of the spindle, or approximately so, is suitably
formed so as to slide in the said socket. It will be understood that as the spindle
rotates and the tool holder is advanced by the feed spindle, to which it is suitably
attached, the cutting faces of the tools will travel in a spiral path, or an approxi-
mately circular path which gradually increases in diameter, and will thus be caused
to cut a bevel edge upon the work.
Fig. 14 illustrates in side elevation the lower end of a spindle carrying a tool
holder arranged for enabling articles with bevel edges to be bored.
The tool holder 2°, consists of a rod formed at its upper end with slots or recesses
into which the end of the feed spindle 2º projects,-nuts 2ª securing the holder to
the feed spindle as shown-and having slots at its lower end in which are held
tools 2 that are adjusted and fixed therein by means of screws 2 and 2t respectively.
The holder is located within a socket 2" formed in a socket piece 2 screwed to the
spindle 2, the said socket being inclined to the axis of the spindle as shown.
Figs. 15 and 16 illustrate a tool holder for enabling articles with bevel edges to
be turned. The tool holder, which is similar to that illustrated in Fig. 14, is
formed in two parts, the tools being carried by a part 2 which is formed with a
dovetail portion adapted to slide in a corresponding groove in that part of the
holder which is connected to the spindle, the adjustment of the part 2" being
effected by means of a screw 2*.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manuer the same is to be performed I declare that what 1
claim is :-
:-
1. A machine for boring or turning or both in which a number of spindles
adapted to carry suitable cutters, means for driving them, and a work table
adapted to hold work to be bored or turned are combined with means for
imparting relative motion such that a number of oval holes may be simultaneously
bored in or oval parts turned upon the work, substantially as described.
2. My improved machines substantially as hereinbefore described with reference
respectively to Figs. 1 and 2, Figs. 3 and 4, and Figs. 5 and 6 of the drawings
for the purposes specified.
3. Tool holders arranged for enabling articles with bevel edges to be bored or

page_text: turned and provided with feeding mechanism substantially as described with
reference respectively to and shown in Fig. 14 and in Figs. 15 and 16 of the
drawings.
ated this 15th day of March 1896.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.