Improvements in Cutter-guides, chiefly Designed for Boot and Shoe Sole Edge Trimming Machines.
Year: 1895

page_text: Date of Application, 1st Oct., 1895-Accepted, 2nd Nov., 1895
COMPLETE SPECIFICATION.
Improvements in Cutter-guides, chiefly Designed for Boot and Shoe
Sole Edge Trimming Machines.
(
I, FRANCIS JOSEPH FREESE of Lowell, in the County of Middlesex and State
of Massachusetts, United States of America, Machinist, temporarily residing at
112 Queen Street, Montreal, Canada, 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 :-
The object of this invention is to provide an improved cutter-guide for the
reciprocating knives of trimming machines or like mechanism where it is desired to
cut away marginal material at a defined distance from & given line. The especial
purpose to which I have first applied my invention is as a guide for the reciprocating
blade of a sole-edge trimming machine, where the leather is to be cut at an uniform.
distance from the inseam of the lasted shoe.
My present invention consists in a cutter guide having a suitably supported disk
or plate held stationary, and slotted to receive the tip of a reciprocating knife which
works in a plane at right angles thereto, in combination with a rotatable rim or
marginal collar extending beyond the peripheral edge of said slotted disk and free
to move around it when the shoe under treatment is pressed against such rim. This
rim is preferably integral with a cup-shaped body extending beneath the disk. By
making a succession of slots at varying distances from the edge of the disk, and
then re-adjusting its position by a partial rotation I adapt the device for trimming
at such distances from the inseam as the slot chosen is from the periphery of the
rim. These and other features of my improvement are hereinafter more fully
described.
In the accompanying drawing
Figures 1, 2, 3 and 4 show, in perspective the several parts detached.
Figure 5 is a central section through the device, and
Figure 6 is a modification, showing also the tip of the trimming knife.
A represents a rigid arm or support extending horizontally or otherwise from the
portion of the machine to which it is to be attached. An open recess B is shown
at one end of the arm, with an offset or shoulder to receive the bolt or screw which
holds it firmly in position, permitting its adjustment from time to time as required.
A boss C is formed on the upper side of the arm, at its forward end, to receive the
disk D and rim E,.and is perforated centrally to admit the binding screw F.
The relation of the parts when assembled is well shown in Figure 5. The disk D
has a central hub on its under side fitting a counter-sunk recess in the upper side of
the boss C and threaded to engage the threaded tip of the screw F. The cup-
shaped body of the rim E has a central opening large enough to receive the boss,
and its upper and outer edges extend beyond the periphery of the disk which is
sunken to about their level. The parts are so formed that the rim E is free to
rotate when the shoe or article being trimmed is pressed against and moved along
its edge. The shape shown in Figure 5 is adapted to fit in edgewise between the
upper and sole edge, and to guide the cutter from the inseam.
The disk D is represented in Figure 1 as formed with six slots d located near to
but at different distances from its edge, to receive the tip of the reciprocating knife,
and there will be such number of these slots as will provide for the several distances
from the edge of the guide at which it is desired to have the cutter operate. The
disk may be adjusted to any of these positions by loosening the binding screw F

page_text: and giving the disk a partial rotation when the knife is raised, then introducing the
knife-tip in the proper slot and tightening the screw. In its reciprocation the tip
of the knife does not come out of the slot, but bears against one of its edges and
as the stock to be cut projects somewhat beyond the slot the face of the disk
adjacent thereto acts as one blade of a pair of shears.
The annular recess e is shown in the cup of the rim E, affording space for the
reciprocating movement of the knife-tip while the rim rotates. Openings will be
preferably formed in the bottom of this recess to permit escape of fibres or particles
of the leather which may enter through the slots d. The bottom of this recess
forms a guide in setting the knife which, at the lowest part of its stroke must not
touch such bottom.
In the modification shown in Figure 6 the disk or central body D, is shown integral
with the arm A and formed with a single slot, in which the tip of the trimming
knife is seen in working position. The rotatable rim surrounds this single-slotted
disk, and will be kept in place in any suitable way. Two or more of these complete
guides will be provided when it is desired to trim at other distances from the edge.
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. In a cutter guide, a central disk or body held stationary and slotted to receive
the knife tip, in combination with a rotatable rim extending outwardly beyond the
periphery of said disk and suitably connected thereto, substantially as set forth.
2. In a cutter guide, a projecting, supporting arm, a circular disk or body fixed
thereon and slotted to receive the tip of the reciprocating knife, in combination
with a rotatable rim extending beneath and projecting beyond the edges of said
disk or body, substantially as set forth.
3. In a cutter guide, an adjustable, circular disk or body formed with a succession
of slots at different distances from its edges, to receive the tip of a reciprocating
cutter, in combination with a rotatable rim enclosing the periphery of said disk or
body, and a binding screw to hold said parts in working. position when adjusted,
substantially as set forth.
4. In a cutter guide a projecting arm A formed with a terminal boss C, and a
cup-shaped rim E having an annular groove in combination with a circular disk D
covering said cup or groove and having a succession of slots at different distances
from its edge, over said groove, and with a binding screw adapted to secure said
disk to said arm, leaving the rim free to rotate, substantially as set forth.
Dated this 1st day of October 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.