Improvements relating to the Manufacture of Pinking Cutters and to Dies for Use in such Manufacture.
Year: 1899

page_text: Date of Application, 2nd May, 1899
Complete Specification Left, 1st Feb., 1900-Accepted, 3rd Mar., 1900
PROVISIONAL SPECIFICATION.
Improvements relating to the Manufacture of Pinking Cutters and to
Dies for Use in such Manufacture.
I, HENRY ANSEL HANNUM, of Chenango Street, Cazenovia, County of Madison,
State of New York, United States of America, Manufacturer, do hereby declare
the nature of this invention to be as follows:-
My invention relates to process and dies for making pinking cutters.
The particular object of the invention is to make cutters designed to form on
the edge of the material to be operated upon scollops having notched edges.
To that end the invention consists of a novel process, and form of dies by means
of which said cutter is formed.
In making cutters according to my process, and by means of my new dies, I
proceed as follows:
•
I stamp a disc of the requisite diameter out of sheet steel. I then place said
disc between suitable dies of a drop press, by means of which the marginal por-
tion of the disc is bent into successive arches extending around the periphery
of the disc, and simultaneously with said bending, the dies crimp the marginal
portion of the disc.
To facilitate said shaping of the disc it may be introduced in a suitably heated
condition between the dies.
After the disc has been thus shaped and removed from the dies and tempered,
I bevel the edges of the crimps preferably by means of an emery wheel having a
V-shaped peripheral face, against which the successive edges of the crimps are
held. In this manner I form on the periphery of the disc a continuous laterally
deflected zig-zag cutting edge extending in successive arches around the peri-
phery of the disc.
To enable the dies to stamp the crimps in the arches at the deepest portions
thereof, I form the creases in the corresponding portions of the faces of the dies
with vertical sides adjacent to the arches and thereby produce the vertical cuts.
This peculiar shaping of the vertical sides of the creases in the dies is one
of the salient features of my invention, as I have found it to be the only form
which permits the crimped cutter to be struck up into its requisite shape by
means of dies of a drop press.
By the above described process and dies, I am enabled to form a cutter having
a perfect continuous zig-zag cutting edge of hardened steel.
Dated this 2nd day of May 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: 1
Improvements relating to the Manufacture of Pinking Cutters and to
Dies for Use in such Manufacture.
. .
ADAS....
I, HENRY ANSEL HANNUM,, of Chenango Street, Cazenovia, County of Madison,
State of New York, United States of America, Manufacturer, 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:-
V.
My invention relates to a process of and dies for making pinking, cutters.
The particular object of the invention is to make cutters designed to form on
the edge of the material to be operated upon scollops having notched edges.
To that end the invention.consists of a novel process, and form of dies by means
of which said cutter is formed.
In the accompanying drawing;-
Figure 1 is a plan view of the cutter,
Figure 2 is an edge view of the same.
Figure 3 is an enlarged edge view of a portion of the cutter showing the shape
of the cutting edge at the junction of two.arches;.
...
Figure 4 is a transverse sectional view of the dies by means of which the required
shape is imparted to the cutter;
4
Figure 5 is a plan view of a strip of cloth showing the effect of the cutter,..and
Figure 6 is a fragmentary side view of the aforesaid die.
, '
In making cutters according to my process, and by means of my new dies, I
proceed as follows:
I stamp a disk a of the requisite diameter out of sheet steel. I then place said
disk between suitable dies dd of a drop press, by means of which the marginal
portion of the disk is bent into successive arches a extending around the peri-
phery of the disk, and simultaneously with said bending, the dies d d.crimp the
marginal portion of the disk as shown at a².
"
To facilitate said shaping of the disc it may be introduced in a suitably heated
condition between the dies.
After the disc has been thus shaped and removed from the dies and tempered,
I bevel the edges of the crimps preferably by means of an emery wheel having a
V-shaped peripheral face, against which the successive edges of the crimps are
held. In this manner I form on the periphery of the disk a continuous laterally
deflected zig-zag cutting edge extending in successive arches around the peri-
p..ery of the disk.
To enable the dies d to stamp the crimps in the arches a' at the deepest
portions thereof, I form the creases in the corresponding portions of the faces
of the dies with vertical sides cc adjacent to the arches and thereby produce the
vertical cuts c¹c shown in Figure 5 of the drawing.
J
This peculiar shaping of the vertical sides ce of the creases in the dies is one
of the salient features of my invention, as I have found it to be the only "form
which permits the crimped cutter to be struck up into its requisite shape by means
of dies of a drop press.
By the above described process and dies, I am enabled to form a cutter having
a perfect continuous zig-zag cutting edge of hardened steel.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. Dies for making pinking cutters, said dies having marginal; portions (curved

page_text: in the shape of successive arches, and provided with successive V-shaped creases
extending radially from the peripheries of the dies, the creases in the sides of
the deepest part of the arches formed with vertical sides adjacent to the arches,
whereby a zig-zag edge is produced on the article compressed between said dies,
substantially as set forth.
2. The process of making pinking cutters, consisting in stamping out of sheet
metal a circular blank, then heating said blank and crimping and curving the
marginal portion thereof by subjecting it to the pressure of shaping dies, then
removing the blank from the dies and tempering said blank, and subsequently
sharpening the edges of the shaped blank, substantially as set forth.
Dated this 1st day of February 1900.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.