Improvements in Multiple Tool Holders or Apparatus suitable for Grooving Rolls Longitudinally.
Year: 1892

page_text: Date of Application, 11th June, 1892
Complete Specification Left, 11th Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Multiple Tool Holders or Apparatus suitable for
Grooving Rolls Longitudinally.
We, JOSEPH SUMMERS of High Orchard Iron Works, Bristol Road,
Gloucester, in the County of Gloucester, Engineer, and GEORGE ELLIS of
Worcester Street, Gloucester, aforesaid, Engineer, do hereby declare the nature of
this invention to be as follows :-
This invention has reference to a construction of multiple tool holder whereby
breaking down rolls can be grooved in the direction of their length, the grooves if
desired, being formed spirally. An arrangement for the purpose is as follows:-
Upon a suitable cylindrical casting formed with a central hole through which the
roll to be grooved can pass, are arranged a suitable number of radial slides each
carrying a cutting tool at its inner end and connected by a link to an adjusting ring
mounted to partly turn about the casting and provided with a handle, the arrange-
ment being such that when the ring is partly turned in one direction the cutting
tools will be caused to move simultaneously into the cutting position and when the
ring is turned in the opposite direction the cutting tools will be moved into an
inoperative position and can then be adjusted to take a fresh cut. The casting is
provided externally with a worm wheel by which it can be adjusted from time to
time in a circular direction to adjust the positions of the cutting tools to form
successive grooves and to vary the pitch or distance apart of such grooves, and is
carried by another casting formed with an external worm wheel by suitably
operating which the cutting tools can be caused to rotate around the roll whilst the
same is moving longitudinally through the tool holder, and thereby form spiral
grooves therein of any desired angle or twist.
As will be obvious multiple tool holders according to this invention can be
variously modified.
Dated this ath1 of T1909
JOSEPH SUMMERS.
GEORGE ELLIS.
COMPLETE SPECIFICATION.
Improvements in Multiple Tool Holders or Apparatus suitable for
Grooving Rolls Longitudinally.
We, JOSEPH SUMMERS of High Orchard Iron Works, Bristol Road,
Gloucester, in the County of Gloucester, Engineer, and GEORGE ELLIS of
Worcester Street, Gloucester, aforesaid, 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 a construction of multiple tool holder whereby
breaking down rolls such as are used in flour milling, can be grooved in the
direction of their length, the grooves if desired, being formed spirally around the
rolls. A tool holder for this purpose according to this invention comprises a
suitable cylindrical body or casting formed with a central hole through which the
roll to be grooved can pass and upon which are arranged a suitable number of
radial slides each adapted to carry a cutting tool at its inner end and connected by
a link to an adjusting ring mounted to partly turn about the body or casting and
provided with a handle, the arrangement being such that when the ring is partly
turned in one direction the cutting tools will be caused to move simultaneously into
[Prins Q1

page_text: the cutting position, and when the ring is partly turned in the opposite direction
the cutting tools will be moved into an inoperative position and can then be
adjusted to take a fresh cut. The body or casting is provided externally with a
worm wheel by which it can be adjusted from time to time in a circular direction to
adjust the positions of the cutting tools to form successive grooves and to vary the
pitch or distance apart of such grooves, and is carried by another rotary body or
casting formed with an external worm wheel by suitably operating which the
cutting tools can be caused to rotate around the roll whilst the same is moving
longitudinally through the tool holder, and thereby form spiral grooves of any
desired angle or twist on the roll.
As will he obvious multiple tool holders according to this invention can be
variously modified.
In the accompanying drawings:-
Fig. 1 is a plan; and
Fig. 2 a side elevation, partly in central vertical section, of a multiple tool
holder constructed according to this invention.
1 is a hollow cylindrical body or casting formed with a central aperture 2 for
the passage of the roll 3 to be grooved and mounted to turn upon a second hollow
cylindrical body or casting 4 that is adapted to be suitably supported in a roll
grooving machine provided with means for causing the roll to reciprocate in a
vertical direction as well understood. To the upper side of the body 1 are
secured a number of sector shape plates 1"'arranged in an annular row and at short
distances apart so as to form a number of radial grooves 5 between them of dove-
tail shape in cross section. In each of these grooves is fitted a slide 6 in which a
tool holder 7 is adjustably fixed by means of studs 8 and pins 9. 10, 10 are the
cutting tools each fixed in a holder 7 by a set-screw 11 and set up by a cotter 12.
13 is an adjusting ring formed with a horizontal flange 13 that extends through an
annular opening in the exterior of the body 1 around which the ring can be partly
rotated by a handle 14. Each slide 6 has projecting from its under side a pin 15
that is connected to a corresponding pin 16 on the adjusting ring 13 by a link 17.
By this construction it will be seen that when the adjusting ring 13 is moved in one
direction into the position shown in the drawings the several cutting tools 10 will
be held in their inner or operative positions and upon partly turning the adjusting
ring 13 in the opposite direction the cutting tools will be drawn back into an
inoperative position in which they can be adjusted in their respective holders 7 to
take a fresh cut.
18 is a worm wheel cast on the exterior of the body 1. By partly turning it
from time to time the said body and the cutting tools carried thereby can be
adjusted in a circular direction on the body 4 for the purpose of moving the cutting
tools carried by it into suitable positions for cutting fresh grooves. 19 is a worm
wheel cast on the exterior of the body 4 whereby the same together with the
body 1 and the several cutters carried thereby can, whilst the roll is moved
end wise through the holder be slowly rotated for the purpose of imparting a spiral
formation to the grooves cut in the roll.
The worm wheels 18 and 19 are arranged to gear with suitable worms when the
multiple tool holder is placed in the roll grooving machine, these worms being
arranged to be operated, when required, by any suitable means, in a manner that
will be readily understood without further description.
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 multiple tool holder or apparatus suitable for grooving rolls in the direction
of their length, comprising a rotary body or casting fitted with a number of radial
slides each adapted to carry a cutting tool at its inner end and connected by links
to an adjusting ring capable of being partly rotated upon said body or casting,
the arrangement being such that by partly turning the said adjusting ring in one

page_text: direction the cutting tools carried by the said slides will be caused to move simul-
taneously into the cutting position, and by partly turning it in the opposite direction
the cutting tools will be moved simultaneously into an inoperative position in which
they can be adjusted to take a fresh cut, and the rotary body or casting can be
intermittently rotated for the purpose of moving the cutting tools into positions
to form successive grooves in a roll moved endways between them substantially as
described.
2. A multiple tool holder or apparatus of the kind referred to in the pre-
ceding claim in which the rotary body or casting is mounted upon a second
rotary body or support formed with an external wheel by which it and the
multiple tool holder or apparatus can be slowly rotated whilst the roll to be
grooved is moved in an endwise direction therethrough substantially as described
for the purpose specified.
3. The improved multiple tool holder or apparatus for grooving rolls, constructed
arranged and operating substantially as described and shown.
Dated this 11th day of March 1893
JOSEPH SUMMERS.
GEORGE ELLIS.
W. Lloyd Wise,
JOSEPH SUMMERS.
GEORGE ELLIS.
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.