Improved Machine for Boring Buttons.
Year: 1896

page_text: Date of Application, 2nd Nov., 1896-4ccepted, 2nd Jan., 1897
COMPLETE SPECIFICATION.
Improved Machine for Boring Buttons.
I, Dr. PAUL PONDORF, Partner of A. Kolbe & Co., of Gössnitz in the
Dukedon of Saxe-Altenburg, in the German Empire Manufacturer do hereby
declare the nature of my invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
The present invention consists of a machine for boring buttons from both sides,
which was hitherto done in two operations and on to machines.
And in order to render the present specification more easily intelligible reference
is had to the accompanying drawings in which similar letters denote similar parts
throughout the several views :---
Fig. 1 is a front elevation of the machine,
Fig. 2 a plan,
Fig. 3 a rear elevation and
Fig. 4 a front elevation of the machine after the button has been bored from
one side and is about to be bored from the opposite side,
Fig. 5 is a detail front elevation of the device for holding the button whilst it
is being bored from one side,
Fig. 6 a detail longitudinal section with detail cross sections through the
supporting device for the button during the first boring operation, showing how the
drill for drilling the button from the opposite side, after the first operation has
been completed, is mounted,
Fig. 7 is a detail end elevation and cross section of the catch for retaining the
sleeve covering the said drill for drilling the second side of the button whilst, the
first side is being drilled.
Fig. 8 is a front elevation of the machine showing the position of the second
drill after it has completed its operation.
Referring to Figures 1 to 4:-At the right hand side of the figures the machine
frame B is provided with double bearings in which are mounted a lower shaft m
and an upper shaft gl. Both are adapted to slide in their bearings being coupled
by means of fork, the arms of which are fast on the shaft m and encircle the
upper shaft g at each end of a collar fast on the said upper shaft. A lever k is
pivotted to the machine frame at kl and engages with its slot k over a pin m² on
the collar on the upper shaft gl. At the left hand end of the shaft (Fig. 8) is
provided a boring tool or drill ', which is designed to perform the second boring
operation on the button and will be hereinafter more particularly referred to. To
the left hand side (Fig. 1 and 8) of the left hand bearing of the shaft g' is fitted a
stationary sleeve B', encircling the end of the said shaft and carrying a second
sleeve d adapted to slide longitudinally thereon, but not to rotate, being coupled
to the eaid sleeve B' in the manner shown at the sections of Figure 6. This sleeve
supports at its forward end a guide frame F in which is mounted a vertical slide j
carrying a supporting pivot i for the button, said slide being normally retained in
position above the centre line of the shaft g by means of a spring, and being
capable of depression by means of a downwardly extending arm connected to
the end of a lever a pivoted to the machine frame at w. When the lever is
depressed by any means, the supporting pin i for the button will be pulled down so
s to be in alignment with the longitudinal centre line of the shaft g.

page_text: At the end of the shaft m is provided a casing or housing y having mounted
therein a vertically sliding pin y2, which is normally retained in its highest position
by means of a spring as indicated at Figure 7. The lower end of the pin extends
out of the housing and is provided with a ring y' in which the end of a lever w
(Fig. 4) engages, which is also pivoted to the machine frame at w.
Mounted at the left hand side of the machine frame in bearings A is a shaft g
which is concentric to the shaft g and carries fast and loose driving pulleys
adapted to be actuated by a belt shifting fork I, which may be best seen from the
rear elevation of Figure 3. The belt shifter I is mounted to slide longitudinally
at the rear of the machine frame, being mounted on the bar .
Transversely to the levers and w' and the bar n is mounted a shaft C extending
above the same and having a counter balance arm or counter poise Q and radially
arranged screws e and f the former adapted to press on the lever and the latter
on the arm w¹ when the shaft C is partially rotated. Another arm q on the said
shaft C extends downwardly and engages a depression o in the bar n, whilst the
shaft is actuated by means of a pedal P, as shown at Figure 1.
The machine is manipulated in the following manner :-
The workman standing in front of the machine takes the button blank in his
left hand and depresses the pedal P with his foot, the lever k being in the position
shown in full lines at Figure 2 and the shaft g' in its extreme right hand position
(Fig. 1). The depression of the pedal P will bring the supporting pin for the
button blank down, into alignment with the shaft g' and the button blank is placed
on the same by the workman using his left hand. The depression of the centre
pin i for the blank is caused by the screw e of the shaft C acting on the lever
and thus depressing the slidej of said pin against the action of its spring. At
the same time the pin y is released by the screw of shaft C being raised from
the lever wand allowing said pin to rise under the action of its spring. This piu
will now be in position behind a projection d' of the sleeve d and ready to force
the said sleeve forward as soon as the shaft m and with it the pin housing y is
moved to the right of Figure 3 or to the left of Figures 1, 2 and 4. During this
period the driving belt is on the fast pulley of the shaft g and the drill hat the
end of the same is revolving at the desired speed. Whilst the workman holds the
blank against the centre pin i, with the left hand he advances the lever k, with
the right hand from the position shown in full lines to the next position shown in
dotted lines at Fig. 2. This advances the blank far enough to allow the drill & to
penetrate about half way through the same, or as far there through as the work-
man should consider desirable. The distance, which the first drill his allowed to
penetrate the blank is dependent on the movement of the lever k and must be left
to the discretion of the workman, in order to produce the desired form or pattern
of button.
As soon as the button has been penetrated far enough from one side by the first
drill the pedal P is released, the button being still held on the drill . The
result of this release is that the spring (Fig. 1) connecting the sleeved with the
bearing of the block or support B contracts, pulling the said sleeve d back over
the sleeve B and simultaneously the spring of the slide pulls the latter upwardly,
out of alignment with the centre of the shaft. These two movements allow the
second drill to appear beyond the end of the sleeves d B', whilst at the same time
an inclined surface S (Fig. 3.) at the end of the bar n comes into contact with the
lower end t of a lever u pivoted at t' to the machine frame and carring at its upper
end a crescent shaped disc » adapted to engage over a dise v fast on the shaft g
and apply the brake to the same. The longitudinal movement of the shaft or
bar n, caused by the counterpoise Q, as soon as the pedal P has been released also
causes the belt shifter to shift the belt from the fast to the loose pulley of the
shaft g. Thus by the movement of the bar n this shaft will be brought to a stand-
still. During this time the button is retained on the drill / which now serves as
centre pin for the same, whilst the lever k is shifted to its extreme right hand
position in Figure 4, thus advancing the drill A which bores the button from

page_text: the opposite side, any suitable meaus being employed to rotate the shaft g' of the
drill h.
The above described machine is advantageously employed for boring half ivory-
nut, horn and other buttons but may of course be used for other purposes.
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 :-
A machine for boring button blanks from both sides according to which the
centre pin i for supporting the blank is vertically and horizontally moveable, thus
allowing the drill to come into or be placed out of operation and enabling a
blank to be bored or drilled from both sides on one and the same machine, in the
manner and for the purpose substantially as described.
Dated this 2nd day of November 1896.
BOULT & WADE,
Agents for the Applicant.