and Parts Connected therewith.
Year: 1888

page_text: Date of Application, 3rd Sept., 1888
Specification Accepted, 19th Oct., 1888
and Parts Connected therewith.
I WILLIAM CORDER, of the firm of Corder and Turley Allison Street, Birmingham,
in the county of Warwick, Manufacturers of Umbrella furniture, 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:
This invention relates to an improved arrangement of cutting out tools for blanks
or other articles, whereby a larger amount of work is produced from the strip than is
ordinarily, and consequently less scissel or waste is made, and it consists in the improved
arrangement and combination of a cutting out punch and stop punch or fence, by
which the portion of metal or scissel, that is usually left between two successive
piercings is obviated, and consequently a proportionate saving, or increase of useful
metal is effected.
In order to make this my invention clear I will at once proceed to describe it, having
reference to the accompanying illustrative sheet of drawings, upon which are figures
and letters of reference, like letters throughout the several views referring to the same
thing or part.
Fig. 1 shews in sectional elevation the cutting out punches, and the combined cutting
out and stop punch.
Fig. 2 is a plan of Fig. 1 upon line A-B, with the punches removed.
Fig. 3 is a front elevation (complete) of Fig. 1.
Fig. 4 is a detail view of the combined cutting out and stop punch.
Fig. 5 is a section of Fig. 4 upon line C-D.
Fig. 6 is an enlarged plan of a blank, as cut out by the tools illustrated.
Fig. 7 is a plan of the scissel or scrap from which the blanks are being produced
according to this my invention.
Fig. S. is a plan illustrating for comparison sake, a piece of scissel such as would
result from ordinary cutting out tools. The comparison of Figs. 7 & 8, shewing the
saving of metal in Fig. 7 to that of Fig. S.
a, is a die or bed, preferably of three parts 1, 2, & 3, so that in case of accident
with one part, such damaged part may be replaced without the loss of the others. b, is
a box or frame in which these dies are firmly secured.
C,
c¹
are guide pieces secured

page_text: upon the box b, between which, the metal strip from which the blanks are to be cut,
passes, upon the surface of the die. To accommodate the variation in the width of the
inetal strips, I provide that c¹ shall be loose and set up with set pins d, d'.
A top punch bed is provided to carry the punches in such order as to suit the dies,
and in this case it will be seen upon reference to Fig. 2 that the punches and dies are
arranged in a zig zag or step fashion as is ordinarily done, when more than one blank
is cut out at a time, in order to allow strength of metal between the cutting surfaces of
the dies.
Upon reference to Fig. 7, the piercings shaded, indicate those portions that are cut
at the same stroke of the machine.
It will be seen that the punches g, g', g², pierce first the small holes in the blank,
while, h, cut out the blank itself.
In forming the cutting punch h², however, I provide a stop extension piece i,
immediately behind it, with the part extending below the cutting portion of the
punch, provision also being made in the die bed for it passage thereinto.
Although there are three punches h, h₁ & h², still 1 have only shewn one of such, as
having the stop punch behind it, as this is generally sufficient, nevertheless I may if
desired provide a stop punch behind each of the cutting out punches. This extension
part, is not raised above the surface of the die, even when the punches are at the top
of their stroke.
The action of the tools and the function of the stop punch will now be understood.
Upon again referring to Fig. 7, it will be seen that the left hand side of the piercing
(scisse!) is brought forward by the feed motion until it butts or rests against the
stop j, which latter is shown in black, when upon a downward stroke of the punches,
the nine holes and the three blanks, as marked by shaded lines are cut out.
Thus it will be noticed that by this arrangement there is no partition of scrap
between the consecutive blank piercings as at in Fig. 8, the left hand edge of the
one blank piercing, forming the right hand edge of the succeeding blank.
A continuous feed motion is used, by which the scissel is wound upon a rotary drum,
driven by frictional contact with a rotary (continuous) pulley, which said drum has a
tendency thereby to be kept in a constant rotary motion, and checked only, when the
edge of the previously cut blank piercing, comes in contact with the stop punch as
herein before described. Such a feed motion is for instance described & illustrated
in application for patent No. 7716, 1888, in connection with similar tools.
Although I have illustrated this my invention by means of the particular form of
blank shown, still it will be clearly seen, that in cutting out very many forms of blanks,
my combined cutting out and stop punch, may be used to obviate the bar of metal in
the scissel, which occurs or follows from the ordinary arrangement of cutting out tools.
Also I do not wish to claim the method of forming the parts constituting the punch
bed or die bed, frame &c., but have described them, to illustrate the arrangement and.
purpose of the combined cutting punch and stop or fence.
Having now particularly described. and ascertained the nature of this my said.
invention, and in what manner the same is to be performed, I declare that what I
claim is,
In cutting out and piercing tools, the combination and arrangement of a stop punch
or fence being provided immediately behind the cutting out punch, whereby the blanks,
are cut out consecutively immediately adjoining each other, substantially as herein-
described and illustrated upon the drawings.
Dated this 1st day of September 1888.