Improvements in Combined Punching and Eyeletting Machine.
Year: 1890

page_text: Date of Application, 9th Apr., 1890-Accepted, 10th May, 1890
COMPLETE SPECIFICATION.
Improvements in Combined Punching and Eyeletting Machine.
I CHARLES WHITFIELD of Union Street, Kettering in the County of Northampton,
Engineer do hereby declare the nature of my said invention and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement :-
These improvements relate to a self feeding eyeletting machine for which I obtained
Letters Patent No. 5953 dated 31st of December 1883 and consist in combining my
improved self feeding eyelet box described and illustrated in my former Specification
in the construction of a combined punching and eyeletting machine whereby the two
operations can be performed togeather as hereinafter described.
On the accompanying drawing
Fig. 1 represents a side view (partially in section) and
Fig. 2 a front view of my combined punching and eyeletting machine.
Fig. 3 is a side view shewing the parts in the eyeletting position.
In all the views a is my improved self feeding box containing the oyelets and 6 the
shoot supported as heretofore upon the upper extremity of the lever c mounted upon
the stud d'affixed to the bracket d but instead of the other arm c¹ of such lever
engaging with a cam lever as heretofore it is now slotted and connected as illustrated
by connecting links d² to a pin d³ upon what may be termed a four armed lever e
mounted upon the stud e'. The next longer arms and g of this lever are connected
the one by a pair of links f¹ to the lower end of the plunger and the other by a
link g to the lower extremity of the punching-spindle i whilst the longer arinj of the
same lever is connected as illustrated by the rod j¹ to the actuating treddle k.
An extension spring 1 (shewn broken off) serves to bring the mechanism back when
released to the normal position indicated in Fig. 1.
It will be observed that the punching spindle is concentric with and passes
centrally through the hollow plunger and that being connected at a longer radious
from the stude than that of the plunger is capable of moving upwards indipendantly
of such plunger so as to effect the punching of the leather or other material and to
retire prior to the eyeletting operation.
The upper extremity of this punching spindle i is provided with a slight shoulder-
the reduced diameter at the point of such spindle (as illustrated about full size in
Fig. 4) constitutes the punch proper and is arranged to enter the hollow eyeletting
die mwhich is bored through to permit the punchings to pass through and out at the
top whilst the larger diameter of the spindle i serves to carry the eyelet and to
guide it to its destination as hereinafter described.
The lower eyeletting die o is fitted at the upper extremity of the plunger h.
The shouldering of the punching spindle is equall applicaple to other eyeletting
machines.
It now only remains to describe the motion of the several parts in the act of
punching and eyeletting-In starting from the position illustrated in Fig. 1 by
depressing the treddle the punch i and plunger h go up together-the punch i at an
accellerated speed over the plunger until the latter receives the bottom eyelet in the
shoot b. At this instant owing to the longer lever arm d² being slotted as illustrated
the feeder stands still. The feeder a now commences to retire and as the punch and
plunger proceed upwards together the speed of the former increases until the punching
operation is completed when it again stands still. The plunger h then follows up
passing the eyelet along the spindle and against the under side of the upper eyeletting
die m and so holds the same whilst the punch retires simultaneously with the plunger
advancing and completing the eyeletting operation by which time the feeder a has
fully retired and the parts assume the positions seen in Fig. 3.

page_text: Having thus 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 :-
1st. The improved combination and arrangement of mechanism constituting a com-
bined punching and eyeletting machine substantially as hereinbefore described and
illustrated on the drawings annexed.
2nd. The combination of a "self feeding eyelet box" with the combined punching
and eyeletting mechanism substantially as and for the purposes hereinbefore described
and illustrated on the accompaning drawing.
3rd. In a combined punching and eyeletting machine so mounting the punching
spindle and plunger that although working concentric the one is capable of moving
independently of the other substantially as and for the purposes hereinbefore described
and illustrated on the the accompanying drawing.
4th. In a combined punching and eyeletting Dachine the employment of a four
armed lever for operating the various parts in relation to each other and all mounted
and operated substantially as and for the purposes hereinbefore described and
illustrated on the drawings annexed.
5th. In an eyeletting machine forming the punching spindle with a shoulder
substantially as and for the purposes herein before described and illustrated on the
accompanying drawings.
יתו.
арт
JOHN G. WILSON,
Patent Office, 55, Market Street, Manchester, Agent for the Applicant.