Year: 1887

page_text: Date of Application, 25th Feb., 1887
Complete Left, 25th Nov., 1887
Complete Accepted, 27th Dec., 1887
[Communicated from abroad by JOHN KEATS and HORATIO CHARLES KEATS, both
of Frankfort-on-the-Main, in the Empire of Germany, Engineers.]
1 ALFRED VINCENT NEWTON of 6 Bream's Buildings, Chancery Lane in the
County of Middlesex, Mechanical Draughtsman, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is so to construct the compound rotary cutters of boot
and shoe sole paring machines, as first to obtain an uniform depth of cut from the
profile or peripherical cutters, notwithstanding the wearing away of their cutting
edges, and secondly, to provide for the adjustment relatively to the profile cutters of
the chamfering or face cutters to suit the work in hand, whether the paring machine
be running or quiescent.
To this end, the peripherical cutters are segment shaped and mounted excentrically
on their holder. The cutting edge has a profile corresponding to the work to be done,
and as the cutters are mounted in their holder, these edges will stand out excentrically
or tangentially clear from the heel of the next adjacent cutter, leaving ample room for
the discharge of chips or shavings. The heel of the cutters in this case form virtually
a stop for the work, for gauging the cut which the work is to receive, and as the
cutters are worn away by sharpening, the point of support for the work on the back
of the cutters will shift rearwards in exact proportions to the relative recession of the
cutting edge from the heel of the next adjacent cutter.-The cutters carry at their
outer side a lip for entering the crease of the boot, and this will also act as a gauge or
stop, and assist in determining the position in which the work is presented to the
rotating tool.
The chamfering or face cutters are conveniently made in one piece, there being say
6 radial cutting blades bent outwards. The steel plate or disc from which these blades
are formed
secured by screws to a sleeve having tang extensions rearwards. This

page_text: sleeve is free to slide endwise on the shaft to which the holder of the profile cutters is
keyed, for the purpose of sliding the radial cutters between the heel and edge of the
profile cutters, to suit the various thicknesses of the work in hand. The tangs of this
cutter sleeve or holder are made fast to a sleeve which fits over the profile holder, and
is furnished with radial recesses in its front end corresponding to the radial blades of
the face cutter. An annular groove is turned in this outer sleeve to receive a fork,
which, by means of a treadle motion, and the counter pressure of a coiled spring, may
be made to traverse the radial blades, and bring them to act upon work of various
thicknesses, without interrupting the action of the profile cutters. Thus the edge
paring of boots and shoes may be accurately, and with great expedition, carried on by
the use of this compound cutter.
יד
01 1
CL
1007
Heels of Boots and Shoes.
I, ALFRED VINCENT NEWTON of the Office for Patents, 6 Bream's Buildings
Chancery Lane, in the County of Middlesex, Mechanical Draughtsman, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement :-
The object of this invention is so to construct the compound rotary cutters of Boot and
Shoe sole paring machines, as first to obtain an uniform depth of cut from the profile
or peripherical cutters, notwithstanding the wearing away of their cutting edges;
and secondly, to provide for the adjustment relatively to the profile cutters, of the
chamfering or face cutter, to suit the work in hand, whether the paring machine be
running or quiescent.
In the accompanying drawing, the compound cutter is shewn complete, in side view
at Fig. 1, and in front view at Fig. 2; and Fig. 3 is a longitudinal section of the
same, taken in the line 1, 2 of Fig. 2.
This cutter consists of three main parts, viz. (1) the sleeve A, which is free to slide
over (2) the profile cutter holder B, for the purpose to be presently explained; and,
(3) a chamfering cutter holder C.

page_text: Fig. 4 shews in side view, and
Figs. 5 and 6 in front and back views, the profile cutter holder detached, its cutters
being in place.
Fig. 7 is a side view, and
Figs. 8 and 9, front and back views of the chamfering cutter holder detached, its
cutter being in place.
bb, Figs. 4 and 5, are the profile or peripherical cutters, which are segment shaped
from their front edge to their heel. These cutters, which form a group of six, are
fitted in rebates cut in the periphery of a cylindrical block, B, so as to give them an
excentric set, and they are held in place by means of binding screws.
Screwed to the back of this block is a disc B¹, which receives the sleeve A, fitting
it so as to allow of the sleeve sliding freely over the cutter holder.
Cast in one with the block B, is a hollow centre piece B³, which is internally threaded.
to fit onto the spindle of the paring machine.
Drilled through the block B, and disc B', at opposite sides of the centre piece, are
holes which form guides for two parallel guide rods projecting rearwards from the .
chamfering cutter holder C.
These rods also pass through the rear end of the sleeve A, and by means of a
binding screw bearing against one of the rods, the holder C. is, when adjusted, made
fast to the sleeve A.
The chamfering cutter holder C consists of a ring turned to fit a recess made in the
face of the holder B, and slide freely therein.
Secured to the front end of the holder C, by means of screws, is the chamfering
cutter D, which is star shaped, the limbs of which form the cutting blades. These
blades correspond in number with the profile cutters, and to receive these blades, there
are formed in the front edge of the sleeve A, a corresponding number of radial
recesses, a, their object being to provide for the adjustment of the sleeve A relatively
to the blades, and thereby to gauge the depth of cut made by the blades.
The peripherical cutters bare formed with a raised part or rib at their outer sido,
the forward end of which, being chamfered, like the front edge of the cutter, will serve
to remove the burr from the inner angle of the sole, as its edge is being operated
upun by the profile cutters. It will be understood that the cutters 6 have a profile
corresponding to the work to be done, and that the cutters are so mounted on their
holder that their edges will stand out excentrically or tangentially, and sufficiently
in rear of the heel of the next adjacent cutter, to leave ample room for the discharge
of chips or shavings.
The chamfering blades are conveniently stamped out of one piece of steel, there
being, say, six cutting blades, which enter the six openings between the heel and
cutting edge of the adjacent profile cutters of the holder B. These cutting blades
are preferably made tangential, and are bent rearwards to enable them to make an
inclined cut in their revolution, as illustrated in Figs. 3 and 7.
The holder of the cutter D, is attached to the sleeve A, as above explained, for the
purpose of enabling the sleeve to slide the chamfering blades between the heel and
edge of the adjacent profile cutters, to suit the various thicknesses of the work in
hand.
Thus, in the dotted position of Fig. 1, the cutter D is shewn as advanced to chamfer
the waist of a boot, whereas in the drawn position of the same figure, it is represented
in a position for chamfering the sole.
This movement is effected by giving an endway motion to the sleeve A. For this
purpose, an annular groove a¹ is turned in the sleeve A, to receive a fork E, carried
by an adjusting screw E. This screw is supported in lugs cast with the bearing in
which the spindle is mounted. Adjusting nuts e serve to advance and draw back the
screw E, and thereby, through the fork E, shift the sleeve A, and the chamfering
cutter D, relatively to the profile cutters. By this means, therefore, the cutter D may
be brought to act upon work of various thicknesses, without arresting the action of the
profile cutters.
In using the compound cutter for the paring of boot soles, a guide is employed, as

page_text: shewn at F, Fig. 1, for entering the indent between the upper and sole of the boot,
which guide determines the correct position for presenting the work to the rotating
tool.
The heel of the cutters & form virtually a stop for the work, for gauging the depth
of cut, and as these cutters are worn away by sharpening, the point of support for the
work on the back of the cutters, will shift rearwards in exact proportion to the relative
recession of the cutting edge from the heel of the next adjacent cutter.
A convenient mode of making the cutters b, is to take a ring of steel of suitable
breadth and thickness, and to turn up its outer periphery to correspond to the profile
of the edge paring to be effected, and to form also a rib on the edge of the ring. Then,
to cut up the ring into sections, and to reduce the breadth of these sections by filing,
so as to obtain the requisite spaces between the cutters, for the traverse of the blades
of the cutter D.
The holder B, to which the segment shaped cutters are fitted, has a diameter
corresponding to the internal diameter of the ring from which the cutters are
formed, and the seats for the cutters are made by planing down the periphery
excentrically, as shewn in the detached view, Fig. 5.
From the foregoing description it will be readily understood how the edge paring
and chamfering of the soles of boots and shoes may be simultaneously and accurately
effected by the use of this compound cutter.
Having now particularly described and ascertained the nature of the said invention,
and in what manner the same is to be performed, as communicated to me from abroad,
I declare that what I claim is :—
1. In the construction of compound rotary cutters for paring machines, attaching
the holder of the chamfering cutter (the blades of which are interposed between the
blades of the profile cutter) adjustably to a sleeve, which is capable of sliding over
the profile cutter holder, in the manner, and for the purpose above set forth.
2. Constructing the holder and cutters B, b, as above described, to receive the
holder and cutter C, D, and permit of the adjustment of the chamfering cutter to its
work.
3. Constructing and mounting the profile cutters, in the manner and for the purpose
above set forth.
Dated this 25th day of November 1887.
NEWTON & SON,
Agents for the Applicant.