Improvements in the Preparation of Welts for use in the Manufacture of Boots and Shoes, and in Apparatus therefor.
Year: 1889

page_text: Date of Application, 6th Feb., 1889
Complete Specification Left, 5th Nov., 1889-Accepted, 7th Dec., 1889
Improvements in the Preparation of Welts for use in the Manufacture
of Boots and Shoes, and in Apparatus therefor.
I, HENRY COOPER PRETTY of Florence Villa, St. Saviours Road, Leicester,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is the preparation of welts or rands and to provide an
apparatus for preparing them for use in the manufacture of boots and shoes and
capable of skiving, channeling and trimming the welt or rand at one operation.
To carry out my invention I provide a bar or bed plate of convenient size and
shape the central part of which may be raised a convenient height above the stand or
bench upon whicli the apparatus is fixed.
One end of the said bar or bed plate may be provided with a hinge the opposite end
having a slot formed therein to which a screw may pass to secure the bed plato in
position and to enable it to be pushed back a short distance and to be raised on the
hinge without completely withdrawing the screw.
On the upper side of the bed plate is a suitably shaped skiving knife preferably
secured thereto by means of screws.
The central part of the skiving knife may be raised to allow of the welt or rand
passing underneath and also to receive the blade and guide of the edge trimmer which
are in immediate contact.
At the back of the apparatus and in close proximity to the skiving knife is attached
an adjustable angle plate or equivalent to guide the welt or rand while being skived
and also to regulate the amount of leather to be trimmed.
The knife or tool by which the channel or groove is formed in the welt is fixed
preferably underneath the bed plate and projects a convenient distance through a slot
or opening in the latter. As a further guide to the welt whilst being delivered through
the apparatus, the back part of the bed plate is extended a suitable distance, the
ends of such extended portion being turned up or down to receive the ends of a
spindle. An angle plate or plates may be attached to the edge of the extended
portion and carry at one end a guide roller or fixed guard to revolve or act against
the welt.
The spindle may be enlarged at one end and screw threaded and the smaller portion
surrounded by a spiral spring and by this means I am enabled to regulate the pressure
upon the welt.
I prefer to construct the skiving knife so that the central raised portion may serve
the purpose of a guide but may make the two parts separately when desirable. The
channeling tool may also be made in a variety of forms but I prefer to have a plate
thickened at the centre and secured to the bed plate by suitable means and which may
be retained at any required height by set screws or equivalent means.
Dated this 6th day of Rab-180

page_text: עשות..
OF BULTIVATION.
Improvements in the Preparation of Welts for use in the Manufacture
of Boots and Shoes, and in Apparatus therefor.
I, HENRY COOPER PRETTY of Florence Villa, St. Saviour's Road, Leicester,
Mechanical 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 :—
The object of this invention is the preparation of welts or rands for use in the
manufacture of hoots and shoes, and the provision of an apparatus for skiving or
buvelling, channeling or grooving, and trimming the edge of the welt at one operation.
The particular construction of the apparatus and the operation will be understood
from the following description, with reference to the accompanying drawings in which
Figure 1 is a perspective view showing the top side of the apparatus.
Figure 2 is another perspective view showing the mechanisin underneath the bed of
the apparatus.
Figure 3 is a lack elevation and
Figures 4. 5. 6. and 7 are details.
The whole of the parts are secured or connected to a bod-plate a which may be
loosely fastened to a table or other support by a screw a to enable the bed-plate to be
raised on the hinge (as shown in figure 2) when it is desired to adjust or otherwise
attend to the underneath mechanism.
The opposite end of the bed is slotted at e and bears against a screw c' fixed in
the table to keep the apparatus rigid and in position during the operation of
preparing the wolts as described, and to almit of the bad-plate a being turned on the
scrow a to raise it on the hinge bas before mentioned; the central part of the bed-
plate is raised or elevated as shown.
Fixed to the bed-plate by screws dd is the skiving or bevelling knife d, (shown
detached in Figure 4,) having its bevelling edge at d and raised in its contral portion
to admit of the rand or welt passing thereunder and also that the edge trimmer e
(shown detached in Figure 5) and grooving or channeling knife or tool ƒ (shown
detached in Figure 7) may be fixed underneath.
The extent to which the contral portion of the bevelling or skiving knife d is raised
above the bed of the apparatus may be varied in additional or different knives
according to the thickness of the welt to be operated upon. The knife d being
rigidly fixed to the bed-plate will remove or level any uneven places on the upper
surface of the welt that may come into contact with its under edge &, Figure 3, when
passing underneath the knife d.
The knife e, Figure 5, for trimming the edge of the welt has a cutting edge
ate and is adjustable in relation to the bevelling knife d by means of the screws
pussing through the slots ee and into the bed-plate a. The edge trimmere may be
fixed nearer to, or farther from the cutting edge of the skiving or bovelling
knife according as it is desired to treat narrow or wide welts; the side e' of the
edge trimmor e acts as a guide to the wolt while passing the knives.
9, (shown detached in Figure 6), is a guard secured to one side or edge of the bed-
plate a by means of a screw y' and is adjustable in relation to the cutting edge of the
bevelling or skiving knife d by means of a slot g³.
The amount of leather removed from the welt by the bevelling knife d varios
according to the relation that the guard a bears to the cutting edge of the former.
Formed integrally with, or attached to the back edge of the bed-plate is an angle
pinto on the upper face of which, and capable of a backward and forward movement
through the medium of slots ³, is a plate J carrying at its foremost end a flanged
guide roller K adapted to rotate on the scrow or pivot K' to facilitate or accolorato
the introduction of the welt to the operating knives, as the edge of the welt moves in
contact with the periphery of the roller k.

page_text: The plate Jis elastically fixed to the angle-plate by the scrowed spring-
encircled rod J¹ and its lateral movement is restricted or limited by the fixed
screws h
The guide roller k can be adjusted in rolation to the operating knives for various
widths of welts by means of the set screw J' whose inner end is in contact with the
end of the angle plate h.
The channeling or grooving tool has its lower end rigidly fixed in a base-plate
by a set-screw and projects upwardly through a slot in the bed-plate a. It is
adjustable laterally by means of a slot and screw (Figure 2) in the base-plate ! ;
the distance it may be moved in either direction may be regulated according as the
groove or channel is to be nearer to or farther from the edge of the welt. The
upper end of the channeling or grooving tool f' is formed with a cutting eyof" which
projects above the bed-plate d more or less according as the groove or channel in the
welt is required to be deeper or shallower; the extent to which it may be adjusted
for this purpose is determined by the set screw whose upper end is in contact with
the underside of the bed-plate and which on being tightened or released lowers or
raises the cutting eye fl of the grooving tool in relation to the bed-plate to a
corresponding extent. Instead of constructing the apparatus as hereinbefore described
for simultaneously skiving, channeling and trimming the welt or rand it may be
constructed so that any two of these operations may be effected at the same time.
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 in the same tool or apparatus of mechanism for simultaneously
bevelling, grooving and trimming the edges of welts or rands.
2. In apparatus such as described a tool such as d adapted for levelling the surface
and for bevelling the edge of a welt or rand substantially as herein described and
illustrated in the accompanying drawings.
3. In apparatus such as described the combination with the bed plate a of a tool
such as e for trimming the edge of a welt or rand substantially as herein described
and illustrated in the accompanying drawings.
4. In apparatus such as described the combination with a bed-plate of a channeling
or grooving tool such as adjustably connected to it so that the depth and position
of the groove to be cut by it in a welt or rand may be varied substantially as
herein described and illustrated in the accompanying drawings.
5. In apparatus such as described the combination with three tools such as d, e andƒ
of a guide roller such as k carried on a spring-controlled and adjustable slide
substantially as herein described and illustrated in the accompanying drawings.
6. The complete apparatus substantially as herein described and illustrated in the
accompanying drawings.
DL: AL ..
N 100
HENRY COOPER PRETTY.
W. P. Thompson & Boult,
Agents for the Applicant.