Improvements in Rotary Cutters, mainly for Trimming the Soles of Boots and Shoes, but also applicable for other Purposes where Rotary Cutters are Used.
Year: 1896

page_text: Date of Application, 2nd June, 1896
Complete Specification Left, 2nd Mar., 1897-Accepted, 3rd Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in Rotary Cutters, mainly for Trimming the Soles of
Boots and Shoes, but also applicable for other Purposes where
Rotary Cutters are Used.
1, MARK THOMAS DENNE, of Rushden, in the County of Northampton,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to cutters mainly for trimming the soles of boots and shoes,
and comprises improvements whereby I am enabled to effect the trimming of the
edge of the sole, and the trimming of the welt, in one operation, instead of two
separate operations as at present, the cutters being also applicable for other purposes
where rotary cutters are used.
In carrying my invention into effect I employ a sole-trimming cutter of the type
wherein a number of cutters are arranged around the periphery of a cutter-block
or holder, and I attach to the said cutter-block, instead of the shield in ordinary
use, a disc or supplementary holder, to which I attach a number of annular welt
cutters of the requisite section for trimming the welts. In practice I find it
advantageous to employ cutters of the kind described in the Specification of my
former Patent No. 4440 of 1895. My improved welt cutters are adapted to fit
into annular recesses in the aforesaid supplementary holder, and are secured by
screws or other fastenings in such manner as to allow of their being rotated to
feed forward the cutting edges when worn by sharpening, in the same manner as
in the sole-trimming cutter described in the specification above referred to.
Deted this 2nd day of June 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in Rotary Cutters, mainly for Trimming the Soles of
Boots and Shoes, but also applicable for other Purposes where
Rotary Cutters are Used.
I, MARK THOMAS DENNE, of Rushden, in the County of Northampton
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 :-
My invention relates to cutters mainly designed for trimming the soles of boots
and shoes, and comprises improvements whereby I am enabled to effect the trimming
of the edge of the sole, and the trimming of the welt, in one operation, instead of
two separate operations as at present, my improved cutters are, however, also
applicable for other purposes where rotary cutters are used.
In carrying my invention into practice I employ a sole-trimming cutter of the

page_text: type wherein a number of cutters are arranged around the periphery of a cutter-
block or holder, and I attach to the said cutter-block, instead of the shield in
ordinary use, a dise or supplementary holder, to which I attach a number of annular
welt cutters of the requisite section for trimming the welts. In practice I find it
advantageous to employ cutters of the kind described in the Specification of my
former Patent No. 4440 of 1895. My improved welt cutters are adapted to fit
into annular recesses in the aforesaid supplementary holder, and are secured by
screws or other fastenings in such manner as to allow of their being rotated to feed
forward the cutting edges when worn by sharpening, in the same manner as in
the sole-trimming cutter described in the specification above referred to.
To enable my invention to be fully understood I will describe the same as applied
to a cutter for trimming the edges of the sole of a boot or shoe and also the welt
surface of such a sole.
In the accompanying drawing,-
Figure 1 is a face view of a cutter-block having two sets of cutters arranged in
accordance with my invention; and,
Figure 2 is a section on the line 2-2, Figure 1:
Figure 3 is an elevation of the main cutter-block detached and having one cutter
in position; and,
Figure 4 is a section on the line 4-4 Figure 3:
Figure 5 is an elevation of the supplementary cutter-block:
Figure 6 is a section on the line 6-6, Figure 5:
Figures 7 and 8 are an elevation and section respectively of one of the
supplementary cutters; and,
Figures 9 and 10 are an elevation and section of a plate for clamping the
supplementary cutters in position.
a is the main cutter-block or disc having formed in it a series of annular
recesses b, b with central pins c, c, the said block being mounted upon a spindle
such as d and secured against rotation thereon. e, Figures 3 and 4, indicates one
of the cutters for the main block, which cutter is shaped internally to fit the
pins c, e and externally so that it will fit against the walls of the recesses bb the
cutter having a radial slut to form a cutting edge and a part of the external
periphery shaped to correspond with the surface to be trimmed.
It is to be understood that the recesses b, b are so formed that when the
cutters are in position therein their peripheral surfaces will project slightly above
the peripheral surface of the cutter-block. As shewn in the drawing the cutter-
block is adapted to carry six cutters but it will be obvious that a greater or less
number may be employed.
fis the supplementary block which is fixed to the spindle d by a screw 9 and
serves by pressing against the cutters e, e to hold them in their recesses. This
supplementary block f has formed in it a series of recesses h, h which recesses, in
order that the cutters carried therein may co-operate with the cutters e, e are placed
at an angle to the face of the block as clearly shewn in Figures 2, 5 and 6,
apertures i, i being formed through which the cutting edges of the cutters will
project as shewn in Figure 2. It will be understood that these recesses h, hare
shaped internally to suit the cutters they are designed to receive and that they are
each provided with a central pin c upon which the cutters fit.
i, Figures 7 and 8, indicates one of the supplementary cutters, which cutters like
the cutters e, e are ring-shaped and have radial slots to form the cutting edges.
In the drawing the supplementary block is represented as being provided with
only three recesses for carrying three cutters one of which is placed between each
pair of main cutters e, e as will be readily understood by reference to Figure 1.
It will be understood that the cutting edges of the supplementary cutters j, j are
shaped so that they will properly co-operate with the main cutters e, e; Figure 4
will illustrate this, the dotted lines indicating the position which the edge of a
cutter j occupies relatively with a cutter e. is the plate by means of which the
cutters j, j are firmly clamped in position in their recesses, the said plate being

page_text: provided with pins or projections 1, which bear upon the cutters. The plate k is
fixed to the supplementary block by screws m, m.
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 combination with the main cutter block provided with annular recesses
and annular slotted cutters in the said recesses, of a supplementary cutter block
engaging the cutters of the main cutter block and clamping them in position, and
cutters secured to the said supplementary cutter block, substantially as
described.
2. The combination with a main cutter block having a series of radially slotted
cutters carried in annular recesses, of a supplementary block also carrying a series
of annular slotted cutters which co-operate with the cutters in the main block, the
said supplementary cutters being held in position by a clamping plate, substantially
as described.
3. The combination with the main cutter block having a series of annular
recesses and cutters carried in the said recesses, of a supplementary cutter block,
directly engaging the said cutters and clamping them between it and the main
cutter block, the said supplementary block being also provided with annular
recesses and with circular cutters in the said recesses, and a clamping plate
engaging the cutters of the supplemental block and clamping them between it and
the said supplemental block and means for securing the said parts together,
substantially as described.
4. The combination with the main cutter block having annular recesses therein
and circular cutters in the said recesses, of a supplemental cutter block having
portions engaging the said cutters, means for securing the said supplemental block
to the main cutter block to clasp the cutters in position the said supplemental block
being also provided with annular recesses and with supplemental circular cutters
in said recesses, a clamping plate having portions to engage the said supplemental
cutters and independent securing devices for securing the said clamping plate to
the supplemental cutter block for clamping the said supplemental cutters in position,
substantially as described.
5. The manufacture and use of rotary cutters consisting of the parts constructed
and combined substantially in the manner hereinbefore described and illustrated in
the accompanying drawings.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.