Improvements in Outters for Trimming the Edges of Boot Soles, 'and for other purposes.
Year: 1895

page_text: Date of Application, 1st Mar., 1895
Complete Specification Left, 2nd Dec., 1895-Accepted, 4th Jan,, 1896
I
PROVISIONAL SPECIFICATION.
- Improvements in Outters for Trimming the Edges of Boot Soles,
'and for other purposes.
I, MARK THOMAS DENNE, of 14, Tower Road, Eastbourne, in the County of
Sussex, Engineer, do hereby declare the nature of this invention to be as
follows:-
i
My invention relates to cutter discs of that class in which. a series of loose
cutters is employed the object of this invention being to provide means whereby
such cutters, especially when the contour of the cutting edges has to be preserveil
may be sharpened more readily than heretofore, and whereby a considerable length
of cutter is provided relatively with the diameter of the cutter-dise, thereby
permitting of being sharpened many times before renewal is necessary. Further
more by my invention a cutter of a given width may be formed with a relatively
small weight of metal thus enabling it to be readily ground.
According to my invention each cutter is in the form of a hollow cylinder which
is slotted longitudinally at one point to form a cutting edge and turned or shaped
externally to correspond with the contour which is to be given to the surface
operated upon. Each cutter which is of a diameter less than half the diameter of
the cutter disc is located in an annular recess, near to the periphery of the said disc
in such a manner that the cutting edge may project slightly beyond the periphery
of the cutter disc.
d
My improved-cutters may be fixed in any suitable manner; in practice however,
1 find it advantageous to provide each cutter with a plate or flange which when
'the said cutter is it position lies upon or against the end of the stud or projection
forming the inner wall of the annular recess. This plate or flange is held tightly
in contact with the stad or projection by a clamping disc or plate held against it.
In sharpening my improved cutter it is only necessary to grind one face of the
slot and to revolve the said cutter sufficiently to compensate for the metal removed
"
COMPLETE SPECIFICATION
'
.if
Improvements in Cutters for Trimming the Edges of Boot Soles,
and for other purposes. ··
I, MARK THOMAS DENNE, of 14, Tower Road, Eastbourne, in the County f
Sussex, Engineer, do hereby deolare .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
38
My invention relates to eutter-discs of that class in which a series of loose
cutters is employed, the object of this invention being to provide means whereby
such cutters, especially when the contour of the cutting edges has to be preserved,
may be sharpened more readily than heretofore, and whereby a considerable length

page_text: of cutter is provided relatively with the diameter of the cutter-disc, thereby
permitting of being sharpened many times before renewal is necessary. Further-
more, by my invention a cutter of a given width may be formed with a relatively
small weight of metal thus enabling it to be readily ground.
According to my lavention each cutter is in the form of a hollow cylinder which
is slotted longitudinally at one point to form a cutting edge and turned or shaped
externally to correspond with the contour which is to be given to the surface
operated upon, Each cutter which is of a diameter less than half the diameter of
the catter-dise is located in an annular recess, near to the periphery of the said disc
in such a manner that the cutting edge may project slightly beyond the periphery
of the cutter-disc.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is an elevation partly in section of my improved cutter, a dinc fòr
clamping the cutters in position being removed; and,
Figure 2 is an elevation partly in section on the line 2-2, Figure 1, but showing
'the disc removed from Figure 1. in position:
Figure 3-is a front view of one of the cutters detached; and,
Figure 4.is a section on the line 4-4,,Figure 3:
Figure 5ris: an elevation of the clamping disë 1.
Figure 6. is a section of the clamping disc on the line 6—6, Figure 5:
Figure 7 is an elevation of the, disc or blook, in which the cutters proper are
mounted ; and,
"
Figure 8 is a section of the same on the line 8.-8, Figure 7.
a, a are my improved. cutters, and bis the disc or block in which the same are
"mounted, the said disc or block being adapted to be secured upon a shaft or spindle
such as c
The said cutters as a which are in the form of hollow cylinders are each
formed with a longitudinal and approximately radial- slot d, as; shewn in Figures. 3
and 4, and are located in annular recesses e, e formed in the block or disc b,.as
shown in Figures 7 and 8, so that the said cutters.will accurately fit into the said
"annular recesses in a manner which will be readily understood by. referring to..
Figures 11and.2; the said recesses.being, so. formed that when the. cutters are in
position their peripheral sunfaces will project slightly above the peripheral surface
of the cutter block b.,
"
་་
24
In order to fix the cutters in position each of them is represented as being
provided with a plate on flange which when the cutter is in position, lies upon or
against the end of the stud or projection 1 forming the inner wall of the annular
recess e. The plates or flanges f of the several cutters are held tightly in contact
with the flanges or projections by a clamping plate g (shewn detached in
Figures 5 and 6) pressed against the said cutters by means of a screw & which is
represented in the drawing as being introduced into a screw-threaded aperture at
the centre of the shaft.c.
In order to facilitate the setting of the cutters and to ensure that the cutting
edges shall always project the same distance above the peripheral surface of the
block 6, I fix to the shaft e a plate i having a series of arms j, j which form bearing
surfaces against which the, cutting edges of ther cutters may be. adjusted in a
manner which will be readily understood. by reference to Figures 1 and 2. These
arms, with the plate i also form a kind of carrier or driver for ensuring the
rotation of the cutter with the shaft c.
As shown in the drawing the cutters are shaped for the, purpose of trimming
"the edges of boot soles but it is obvious that, they may be made of any other
suitable peripheral shape according to requirements
It will be readily understood, that. my improved. cutters can be sharpened from
time to time by simply grinding the approximately; radial faces forming the
cutting edges and that the cutters, may be sharpened as many times as required,
provided there is sufficient length of flange deft,no, enable the outters to be held
in position.

page_text: 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. A rotary outter the cutters proper of which are formed of a series of radially
slotted oylinders, fixed in annular recesses in a cutter-dise or block in such a
manner that the peripheral surfaces of the said cutters project slightly beyond
the peripheral surface of the said cutter-disc, substantially as described.
2. In a rotary cutter a series of radially slotted cylindrical cutters located in
annular recesses formed in a cutter-disc and having flanged ends which, when
clamped against central studs or projections in the annular recesses by means of a
clamping plate, firmly hold the said cutters in any position in which they are
placed, substantially as described.
8. In a rotary cutter the combination of a cutter-disc b having a series of
annular recesses formed therein, a series of cylindrical cutters, having radial slots
and provided with flanges at one end, inserted into the said recesses, a clamping
plate g for securing the said cutters in position in the said annular recesses and a
series of adjusting pins such as; fixed to a plate upon the cutter shaft, substantially
as described.
4. The manufacture and use of cutters for trimming the edges of boot soles-
and for other purposes construoted substantially as hereinbefore described and
illustrated in the accompanying drawing.
Dated this 2nd day of December 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant..