Improvements in Machines for Use in Building Up Boot and Shoe Heels.
Year: 1893

page_text: Date of Application, 10th May, 1893
Complete Specification Left, 4th Jan., 1894-Accepted, 10th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Machines for Use in Building Up Boot and
Shoe Heels.
I, ALEXANDER MELVILLE CLARK, of the Firm of A. M. & Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Chartered Institute
of Patent Agents, do hereby declare the nature of this invention (a communication
to me by Carl Wilhelm Stahl, Engineer, of Stuttgart, and Otto Herz, Manu-
facturer, of Frankfort-on-the-Main, both in the Empire of Germany,) to be as
follows:-
This invention relates to machines for building up the lifts of boot and shoe
heels.
In the accompanying drawings, two arrangements for carrying out the invention
are illustrated.
Figure 1 shews the machine in longitudinal section.
views thereof.
Figures 2 and 3 are detail
Figure shews the second form of machine in longitudinal section; and
Figures 5 to 9 various parts thereof.
Two template holders bare fixed adjustably on a bed plate a by means of
guides cand screws c passing through slots ². In these holders a pair of
changeable knife-edged templates e are fixed, the shape of the templates corres
sponding to the intended configuration of the heel.
When both of the templates
have been adjusted against the lowermost lift d the whole of the remaining lifts can
be inserted between the templates by pushing them gently against the rear part of
the angle plate a and then pressing them somewhat downwards between the two
templates, any variations in the shape of the heel due to the inequalities in the
leather being thereby equalized by the knife edged templates cutting into the
unequal layers. Taking ten lifts as the number required to make a heel of
the proper height, a second heel of similar shape cannot be produced of the same
height with a corresponding number of lifts of thinner or softer leather, in con-
sequence of which the latter press deeper into the cutter templates, so that one or
two more lifts have to be added.
In Figure 1 the device is shewn in direct connection with a nailing machine, a
nail-guide plunger a¹ being rivetted to the angle plate a and working in a guide
cylinder which can be adjusted according to the height of the heel and fixed by a
clamping screw p. In a fixed cylinder works a pressure plunger i operated by a
lever and at the end of this cylinder is an index, another index fixed in the
pressure plunger i moving in a slot 9 in the cylinder f. By pushing the plunger i
against the inserted heel, the index k connected to the bolt is pushed against the
index h. When the first pressure on the heel has been completed and the rear edge
of the index k meets the front edge of the index h the proper height of heel is
obtained.
As, when the heel lifts are set up, the uppermost lift is not put in at first, the
index k at the first pressure on the heel passes the index 1, the distance then
existing between the two latter, corresponding exactly with the thickness of the
remaining heel lift which is then selected by the workman and put in. Having
done this, a nail is dropped into each of the slots q and in the two nail guide
plungers a¹ and 6', and driven into the heel by the nail-driving pins s when the
plunger a¹ is forced into its guide cylinder and the plunger 6' into the plunger i
by the latter being pressed forward by means of a foot lever.
The modified form of machine shewn in Figures 4.to 9 differs from that above

page_text: described in that the axes of the two nail driving plungers are not in line with
each other, so that the nails driven in on opposite sides of the heel pass each
other, thus permitting the employment of longer nails than hitherto possible,
whereby the heel lifts are held together more securely and their displacement
prevented.
A modification of the building-up devices has also been devised. The changeable
templates 3, 6, which determine the curve of the heel are carried by levers J, J¹,
pivoted scissor-wise, and are simultaneously set by one motion, for a heel of any
size, by means of a lever P having a wedge-shaped cam-segment P¹ which acts
between the tail ends of the levers which are pressed apart by the spring N N
when the lever is turned up.
To enable beel lifts with straight, and with curved, front edges to be evenly
superposed, the guide plate a is provided with a rib H, Figure 5, of square section.
By means of this rib H the lifts can be superposed regularly, both in the case of
heels with straight and hollow fronts. The rib H is provided with a scale which
shews at once the height of the finished heel, so that the index device required in
the first described apparatus can be dispensed with.
Dated this 10th day of Max 1902
A. M. CLARK,
1
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Machines for Use in Building Up Boot and
Shoe Heels.
I, ALEXANDER MELVILLE CLARK, of the Firm of A. M. & Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Chartered
Institute of Patent Agents, do hereby declare the nature of this invention (a
communication to me by Carl Wilhelm Stahl, Engineer, of Stuttgart, and
Otto Herz, Manufacturer, of Frankfort-on-the-Main, both in the Empire of
Germany) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to machines for building up the lifts of boot and shoe
heels.
In the drawings accompanying the Provisional Specification are illustrated two
machines for carrying out the invention
Figure 1 shewing one of the machines in longitudinal section, and Figures 2
and 3 detail views thereof, while
Figure 4 shews the second form of machine in longitudinal section, Figures 5 to 9
shewing various parts thereof.
Two template holders are fixed adjustably on a bracket or bed-plate a by
means of guides c and screws e passing through slots c. In these holders a pair
of changeable knife-edged templates e are fixed, the shape of the templates
corresponding to the intended configuration of the heel. When both of the
templates have been adjusted against the lowermost lift d the whole of the remaining
lifts can be inserted between the templates by pushing them gently against the
rear part of the angle plate a and then pressing them somewhat downwards
between the two templates, any variations in the shape of the heel due to the
inequalities in the leather being thereby equalized by the knife edged templates
cutting into the unequal layers. Taking ten lifts as the number required to make
a heel of the proper height, a second heel of similar shape cannot be produced of
the same height with a corresponding number of lifts of thinner or softer leather,
in consequence of which the latter press deeper into the cutter templates, so that
one or two more lifts have to be added.
=
In Figure 1 the device is shown in direct connection with a nailing machine, a

page_text: nail guide plunger a' being rivetted to the angle plate a and working in a guide
cylinder which can be adjusted according to the height of the heel and fixed by a
clamping screw p. In a fixed cylinder fworks a pressure plunger i operated by a
lever and at the end of this cylinder is an index h, another index k fixed in the
pressure plunger i moving in a slot g in the cylinder f. By pushing the plunger i
against the inserted heel; the index k connected to the bolt is pushed against the
index h. When the first pressure on the heel has been completed and the rear edge
of the index k meets the front edge of the index h the proper height of heel is
obtained.
As, when the heel lifts are set up, the uppermost lift is not put in at first, the
index at the first pressure on the heel passes the index h, the distance then
existing between the two latter, corresponding exactly with the thickness of the
remaining heel lift which is then selected by the workman and put in. Having
done this, a nail is dropped into each of the slots 9 and in the two nail guide
plungers a and b, and driven into the heel by the nail-driving pins s when the
plunger a¹ is forced into its guide cylinder and the plunger 6' into the plunger i
by the latter being pressed forward by means of a foot lever.
The modified form of machine shown in Figures 4 to 9 differs from that above
described in that the axes of the two nail driving plungers are not in line with each
other, so that the nails driven in on opposite sides of the heel pass each other, thus
permitting the employment of longer nails than hitherto possible whereby the
heel lifts are held together more securely and their displacement prevented.
A modification of the building up devices has also been devised. The changeable
templates bb, which determine the curve of the heel are carried by levers J J',
pivoted scissorwise, and are simultaneously set by one motion, for a heel of any size
by means of a lever P having a wedge shaped cam segment P' which acts between
the tail ends of the levers which are pressed apart by the spring N N when the
lever is turned up.
To enable heel lifts with straight, and with curved, front edges to be evenly
superposed, the guide plate a is provided with a rib H, Figure 5, of square section.
By means of this rib H the lifts can be superposed regularly, both in the case of
heels with straight and hollow fronts. The rib H is provided with a scale which
shows at once the height of the finished heel, so that the index device required in
the first described apparatus can be dispensed with.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
1. A building up and nailing machine for boot and shoe heels in which the lifts
to constitute a heel are superposed on a bracket a between a pair of knife edged
templates corresponding in configuration with and abutting against the heel, so that
by means of the nails placed in the grooves q and r of the nail guide plungers a¹
and the nailing may be performed on both sides of the heel, the indexes h and k
showing the height of the heel.
2. In the heel building and nailing machine above claimed, (a) placing the nail
driving plungers out of line with each other so that the nails may be driven into
the heel at a certain distance apart and not in line with one another (6) mounting
the changeable templates bb' upon scissor like movable levers J J' which can be
quickly and simultaneously set for different sized heels by the wedge shaped cam
segment P¹ of the lever P (c) providing the plate a with a projecting rib H to
serve as an abutment for straight and curved heel pieces.
Dated this 4th day of January 1904
A. MELVILLE CLARK,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.