Improvements in Edge-setting Machines Used in the Manufacture of Boots and Shoes.
Year: 1897

page_text: Date of Application, 20th Feb., 1897-Accepted, 29th May, 1897
COMPLETE SPECIFICATION.
Improvements in Edge-setting Machines Used in the Manufacture of
Boots and Shoes.
We, HARRY ALLSOP DUDGEON, JAMES ALFRED KEAY, and PEARSON & BENNION LTD..
all of 16 Blue Boar Lane, Leicester, Engineers 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 :—
Our invention relates to edge setting machines, and consists of-
(1.) An improved vibrating arm containing a tool-holder and means for minimising
the jarring motion, felt by operators of edge-setting machines.
(2.) Improvements in means for imparting the necessary rocking motion to the
vibrating arm.
In the accompanying drawings:
Fig. 1 is a sectional elevation of the vibrating arm.
Fig. 2 is another elevation of the vibrating arm.
Fig. 3 is a section of the vibrating arm, showing how it is secured to a rocking
shaft.
Figs. 4 & 5 are elevations of the sleeve A².
Figs. 6 & 7 are elevations of the fork B, bush C and gib B*.
Figs. 8 &
are respectively an elevation and plan of the connecting lever G.
Figs. 10 & 11 are respectively a plan and elevation of the eye-bolt G.
:
:
A is an arm which is caused to vibrate upon its axis A', and has clamped within
its lower end a bush A², made preferably of hardened steel, and bored to suit the
shank of the tool A³. The upper end of the bush is grooved as shewn at A³, for the
admission of the fork B, which grips the grooved end of the tool shank. The
fork B is split for part of its length, as shewn at B', and has a conical part B formed
upon it.
The collar C, bored conically at its lower end, fits the conical part of the fork and
is pressed upon it by the spring B³, acting against the small gib B in the fork B.
The spring D also presses the collar (upon the end of the bush A2, and is held down.
by the adju-table screw D¹.
To place a tool A³ in the holder, the fork B is depressed, thus liberating it from
the collar C, and the tool is pushed up the bush until its grooved end engages with the
fork which is then liberated and is pressed upwards by the spring B³ and gib B' until
the collar C acting upon the cone B³, causes the fork to tightly grip the grooved end
of the tool.
When a boot or shoe is pressed against the end of the tool A³, the pressure is
transmitted through the fork B and collar C to the spring D which yields, and thus.
minimises the jarring motion felt by the operators, and in order that the pressure at
which the spring D yields may be regulated to suit the nature of the boot being
operated upon, we provide the adjusting screw D', clamped by the screw D2 in the
vibrating arm A, which is split for part of its length at A*.
The vibrating arm A may be pivotted and have motion imparted to it in any suitable.
manner, though we prefer to secure it upon the end of a rocking shaft, such as E, by
means of the key E', held in position by the nut E³, which is prevented from working
loose by the spring washer E. Motion is imparted to the rocking shaft E from
a rotating eccentric F formed in or on the shaft F¹, the shaft being supported in.
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page_text: suitable bearings and connected by a lever G which engages with a slide-block H upon
the eccentric part of the shaft F¹.
The construction of the lever G with its cap and means for adjustment forms the
second part of our invention.
In order to provide simple and efficient means of adjusting the cap G¹ without
employing any parts likely to become loose owing to the rapid vibratory motion,
formed upon or attached to the cap G¹ we provide two supporting pillars G' which
fit into holes G in the lever G and are held in position by the eyebolts G* in
slots G³ and nuts G6 which are prevented from working loose by the spring
washers G'.
.
The lever G is secured to the rocking shaft by a key or set-screw E and the slide
block H may be formed of one or more parts.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is: :-
(1.) In edge-setting machines the combination of the various parts forming the
tool holder, consisting of a bush, fork, collar, spring and gib as herein described and
as illustrated in the accompanying drawings.
(2.) In edge-setting machines the combination of the various parts forming means
for minimising the jarring motion felt by the operator, consisting of a bush, fork,
collar, spring and adjusting screw as herein described and as illustrated in the
accompanying drawings.
(3.) The combination of the various parts formed in or attached to the vibrating
arm, as herein described and as illustrated in the accompanying drawings.
(4.) As a mechanical device, the combination of an eccentric, slide-block, cap,
supporting-pillars eyebolts, nuts, spring-washers and the part to which the cap is
attached, as herein described and as illustrated in the accompanying drawings.
Dated this 19th day of February 1897.
HARRY ALLSOP DUDGEON.
JAMES ALFRED KEAY.
FRANK E. WHEELER,
Secretary, for the Company.