Improvements in Machines for Punching Boot Uppers.
Year: 1893

page_text: Date of Application, 26th Jan., 1893
Complete Specification Left, 9th Sept., 1893-Accepted, 14th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machines for Punching Boot Uppers.
I, CHARLES LITCHFIELD, of Gas Street, Kettering, in the County of
Northampton, Engineer and Machinist, do hereby declare the nature of this
invention to be as follows:-
My invention relates to machines for punching the eyelet holes in boot uppers
and especially to that class of such machines designed to punch several holes
simultaneously.
According to my invention I make use of hollow punches through which the cut
out pellets are discharged and I arrange these hollow punches in pairs upon blocks
carried upon the punching head.
In order to make the distance between the holes adjustable I mount each punch
of a pair upon a slide working in the block, the said punches being secured in any
position into which they may be adjusted by screws or by screwing them tightly
onto their seats.
Dated this 26th day of January 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Punching Boot Uppers.
I, CHARLES LITCHFIELD, of Gas Street, Kettering, in the County of
Northampton, Engineer and Machinist, 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 :-
My invention relates to machines for punching the eyelet holes in boot uppers
and especially to that class of such machines designed to punch several holes
simultaneously.
According to my invention I make use of hollow punches through which the cut-
out pellets are discharged and I arrange these hollow punches in pairs or sets on
blocks carried upon the punching-head.
In order that the distance between the holes may be varied I attach each punch
of a pair or set to a slide working in a block, 'the said punches being secured in any
position into which they may be adjusted by screws, or by screwing them tightly
onto their seats. The blocks are also advantageously made adjustable.
In order to enable my invention to be fully understood I will describe the same
by reference to the accompanying drawings, in which :-
Figure 1 is a front elevation partly in section of a machine for punching boot.
uppers provided with my improvements:
Figure 2 is a plan of the same:
Figure 3 is a vertical section on the line 3-3, Figure 1:
Figure 4 is a horizontal section on the line 4-4, Figure 3:
Figure 5 is an end view of one of the slides with its punch; and,
Figure 6 is a side view of the same.
Similar letters of reference indicate similar parts in all the figures.
a represents the head of the punching machine fixed to the operating rod b which
is actuated by a lever or otherwise in the usual manner. c is the ordinary spring
for raising the head of the press and punches after the upper has been punched.
d is the lower fixed part of the press carrying anvils d' on which the uppers are
placed to be punched,

page_text: e are the punches which I make hollow, as clearly shewn in Figures 1 and 3.
These punches are arranged in pairs or in sets, in blocks f, f carried by the
punching-head a of the machine. In order to make the punches adjustable I mount
them upon pins forming slides g capable of sliding in corresponding holes in the
blocks each punch having a separate slide and passing into a hole in the same.
The punches are provided with screw-threads at i, the said screw-threads screwing
into female threads in the holes h, h. By this means in order to adjust a punch it
is simply necessary to partly unscrew it and move the slide into the required
position, (slots in the underside of the blocks allowing the punches to be moved)
and then to screw the punch tightly against its seat formed by the underside of its
block f. is a shoulder or flange on each punch to allow of its being screwed
In practice I find it advantageous to make the blocks f carrying the punches also
adjustable. For this purpose the upper part of the blocks are provided with screw-
threaded shanks f¹ passing through slots 1, 1 in the head a, the blocks being fixed
in position by screw-nuts m. Where the punches are arranged in pairs, as shewn
on the right hand side of Figures 1 and 2, the slides are arranged in a line but
where three punches are arranged in one block then the slide of the centre
punch is arranged at right angles to the other two slides, as clearly shewn in
Figure 4.
nome to its sent.
By this arrangement it will be obvious that the position of the punches can be
adjusted, that is to say, they can be removed further from or nearer to one another
by simply unscrewing them and shifting the position of the slides and then screwing
them into their seats. Also further means of adjustment are provided by the
blocks being also made adjustable. This arrangement allows of different
sized boot-uppers being punched with eyelet holes. The anvils are made
sufficiently large to allow for the different positions in which the punches may be
placed.
As the eyelets are punched in the uppers the cut out pellets will pass up the
hollow punches and through holes n, n which are made in the blocks f, f for that
purpose.
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 machine for punching eyelet-holes in boot uppers the use of hollow
punches for allowing the cut-out pellets to be discharged substantially as
described.
2. In a machine for punching the eyelet-holes in boot uppers mounting the
punches upon slides so as to allow of the punches being adjusted to different
positions substantially as, and for the purpose, herein before.described.
3. In a machine for punching the eyelet holes in boot-uppers the use of
adjustable blocks such as provided with slides for carrying the punches, substan-
tially as hereinbefore described and illustrated in the several figures of the
accompanying drawings.
4. In a machine for punching the eyelet holes in boot-uppers the combination
with hollow punches of holes or openings in the blocks carrying the punches
to allow of the discharge of the cut-out pellets, substantially as hereinbefore
described.
5. The improved machine for punching boot uppers hereinbefore described and
illustrated in the accompanying drawings.
Dated the 9th day of Santambor 1902
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.