Improvements in Machinery for the Manufacture of Writing Pens and other Stamped Metal Goods.
Year: 1895

page_text: Date of Application, 20th May, 1895
Complete Specification Left, 3rd Jan., 1896-Accepted, 21st Mar., 1896
PROVISIONAL
SPECIFICATION.
Improvements in Machinery for the Manufacture of Writing Pens
and other Stamped Metal Goods.
I, FRIEDRICH NEVOIGT, Manufacturer, of Reichenbrand, in the German
Empire, do hereby declare the nature of this invention to be as follows:-
This invention has for its object, to increase the productivity of machines for
the manufacture of writing pens by adapting them to stamp or punch out two blanks
at the same time, and to dispense with manual labour between the various stages of
subsequent operations.
The improved machinery chiefly comprises a double stamping or punching press
adapted to operate on two strips of sheet metal drawn through the same, a pair of
symmetrically inclined guide grooves adapted to receive and guide the blanks
punched from the said strips of sheet metal, the said guide grooves forming
together approximately a right angle, at the apex of which the double stamping
press is situated; a vertically movable feed bolt placed underneath the apex of the
inclined guide grooves and intersecting the angle formed between the same, said
bolt being adapted to place into the inclined guide grooves the pieces of sheet metal
punched out of the said strips; two sets of embossing presses, dies or similar
reciprocating tools mounted along the said inclined guide grooves and adapted to
operate at right angles to the same, each set being placed parallel to one of the
said guide grooves, and above the same; and two series of locks or automatic
holders placed below the said guide grooves and parallel to the same, each lock
being adapted to retain the blank or piece of work in the desired position until the
corresponding embossing stamp, die or other reciprocating tool has finished its work
on the said blank.
Each of the said holders or locks may consist of two pairs of fingers or spring
levers adapted to hold or clip the piece of work with elastic pressure and to move
apart alternately, so that when the lower spring levers release the piece of work,
the upper levers seize the fresh piece of work and bring it into the desired position
limited by the said fingers.
For limiting the feed motion of the sheet metal strip to be operated upon, I have
designed a special device which chiefly consists of a lever in which slides a piece
carrying a detent adapted to drop into the hole punched out of the sheet metal
strip, also a coiled spring adapted to withdraw the said sliding piece when the
stamp or die is in its lowest position, so that during the subsequent lifting of the
stamp, the said detent can no longer enter the hole stamped out by the press.
The reciprocating stamps or dies of the duplex stamping press placed at
the apex or head of the machine are provided with ejecting devices for pushing
through the matrix the blanks or pieces punched out of the sheet metal strips.
Such a device chiefly comprises a pin or bolt placed in the axis of the die or stamp,
a striking mechanism released during the up motion of the die and adapted to drive
the said pin or bolt downward, and a coiled spring enclosed in the die and adapted
to withdraw the said pin or bolt within the die.
Dated this 18th day of May 1895.
FAIRFAX & WETTER,
Agents for the Applicant.

page_text: '
Improvements in Machinery for the Manufacture of Writing Pens
and other Stamped Metal Goods.
1, FRIEDRICH NEVOIGT, Manufacturer, of Reichenbrand, in the German
Empire, 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 has for its object to increase the productivity of machines for the
manufacture of writing pens by adapting them to stamp or punch out two blanks at
the same time, and to dispense with manual labour between the various stages of
subsequent operations.
In the accompanying drawings
Fig. 1 shows a portion of a machine embodying my invention, and suitable for
the manufacture of sheet-metal boxes.
Figs. 2, 3 and 4 show the device for holding the pieces of work in consecutive
stages of operation.
Fig. 5 is a front view of a steel-pen machine adapted to perform from 2 to 6
operations at the same time.
Figs. 6, 7, 8 and 9 are detail views or diagrams, indicating in what manner the
piece of work is introduced into the machine.
Fig. 10 is an elevation and plan of mechanism used for punching or stamping.
Fig. 11 shows the same at a subsequent stage of operation.
Figs. 12 and 13 show two consecutive stages of the mechanism for pushing the
punched-out blank through the matrix.
Fig. 14 is a plan of the guide groove and holding device for slotting the pens, the
scale of this figure being of the natural size.
Fig. 15 is a front view of the same.
Fig. 16 is a plan of the mechanism used for the process of bending.
Fig. 17 is a vertical section of the mechanism for ejecting the bent pen.
The machinery shown in Fig. chiefly comprises two series of inclined stamping
or punching presses P1, P2, adapted to operate on two strips of sheet metal drawn
through the same, a pair of symmetrically inclined guide grooves e, el serving to
receive and guide the blanks punched from the said strips of sheet metal, the said
guide grooves forming together approximately a right angle, at the apex of which
the double stamping press S shown in Figs. 10. 11 is situated; a pair of vertically
movable fork-shaped feed bolts c placed underneath the apex of the inclined guide
grooves and intersecting the angle formed between the same (Figs. 6, 7, 8 and 9),
said bolts being adapted to place into the said guide grooves e the pieces of sheet
metal punched out of the said strips w; the two sets of embossing presses, dies, or
similar reciprocating tools P1 P2 mentioned above are mounted along the said
inclined guide grooves and adapted to operate at right angles to the same.
machine also comprises two series of locks or automatic holders, Figs. 2, 3, 4, 14
and 16, placed below the said guide grooves and parallel to the same, each lock being
adapted to receive the blauk or piece of work and to retain it in the desired position
until the corresponding embossing stamp, die, or other reciprocating tool has finished
its work on the said blank.
The
Each of the said holders or locks consists of four one-armed levers pivoted
on the points x1, x2, x3, x, and carrying the fingers 1, 2, 3, i, fixed by means of
screws. Between each pair of the said levers 1, there is a block m, adapted to turn
on y (Figs. 2, 14 and 16) and connected with an outwardly projecting lever or o¹.
The tappets p, pl mounted on the rod ? set in motion the levers and o' alternately,
thereby causing the fingers or , or i³, i to move outward.

page_text: Fig. 2 shows the position of the fingers during work, in which position the
tappets p, p fixed on the longitudinally movable rod r will not touch the
levers o' 11.
When the presses P' P3 have done their work and the dies are receding, the
rod is shifted downwards, the fingers ³, of all holders move apart, and
the pieces of work w, which thereby lose their support, slide down until caught
by the upper fingers of the next holder (Fig. 3) whose fingers are still placed
close together.
Subsequently the rod is again lifted, and the lower fingers are again
pressed inward by the springs f*, Fig. 15, because the tappets p¹ release the lower
levers o¹.
Thereupon the tappets p meet the upper levers l', and the upper fingers ¹, 2 move
apart, so that the pieces of work retained by the same will now lie on the lower
fingers (Fig. 4). Finally the upper fingers are likewise allowed to return to their
close position, and the pieces of work are again held in the position necessary for
operating on the same (Figs. 2 and 14).
The rod r is shifted by means of a lever H and a grooved drum N mounted on the
main shaft w, Fig. 1, and the latter receives its motion from the shaft W by means
of the bevel wheels w¹, w².
The machine contains a punching tool S with two punches or stamps a', a²,
Fig. 5; so that two articles such as steel pens, f¹, f2, may be stamped out at the
same time; also two slides c¹, c, adapted to convey the stamped-out blanks towards
the groove e¹, e², in which they slide from one holder to the other, as described
above, in order to be subjected consecutively to the presses P1 P2-_P³.
The motion of the forked slides c, c² is effected by a cam k mounted on the
shaft connected with the main shaft W by chain gear, the said cam being
adapted to press downward the frame R carrying the slides c', c, and held up by
the springs F, F.
To reduce the waste of material in stamping out the pieces of sheet-metal, I have
adopted the device represented by Figs. 10 and 11.
A block situated underneath the stamp and supported right and left by
trunnions z, contains a bolt a extending from a frame 6, which passes around the
stamps and carries a nose n. The said bolt a is prevented from turning on its axis
and drawn by a spring a³ in a direction opposite to that in which the strip of sheet
metal moves through the machine.
In the lowest position an angled fixed to the press stamp presses the part b
downward, and the stud or nose n is lifted off the sheet metal strip (Fig. 11).
When the stamps recede upward, the nosen presses upon the sheet metal strip, and
when the latter is drawn along, the nose drops into the hole previously punched out,
after which it is carried along by the sheet-metal strip until the adjusting nuts m¹
screwed on the bolt a come in contact with the part 'b' (Fig. 10). Subsequently the
punch again descends and the dies a¹, a² enter the sheet metal at the places indicated
in Fig. 11 by section lines.
The dies or stamps a', a² contain pins s, s' drawn into the dies by weak springs,
Fig. 13. As soon as the dies ascend again from their lowest position, a spring-
operated striking mechanism is released, which drives the pins downward, so that
the latter push the sheet metal blanks (which have been punched out) through the
matrix.
The striking mechanism and its stopping device may be seen in Figs. 5, 12
and 13.
When the sliding block S of the punch has reached its highest position, the
projecting nose n' of the plate g will be situated above the spring-operated pin h.
During the downward motion the pin h retains the plate g and the plate g', connected
with plate g by bolts, while the bridge-piece t, connected with the sliding block S,
compresses the spring (Fig. 13).
In the position shown by Fig. 12, the bellcrank-lever h¹ pivoted at v¹, is turned

page_text: back to the right by the connecting rod, until the pin h releases the plate n¹ and
the plate gi drives the pins & downward.
The device for ejecting the pens or other articles after they have been bent or
embossed, is represented by Figs. 16 and 17.
During the downward motion of the embossing stamp, a pin A passing through
the matrix is pressed downward, and the spring F gets behind the detent or head of
the stop lever C¹. When the embossing stamp has receded and the tappet p¹ sets in
motion the block m, the stop lever C' is pressed sideways by means of the needle B,
and the spring F, now becoming free drives the pin A upward, so that the embossed
object will be ejected.
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. A machine for the manufacture of metallic writing pens and similar stamped
metal goods, comprising in its construction a duplex stamping or punching press a', a²,
adapted to operate on a sheet metal strip drawn through the machine, a pair of
inclined guide grooves e, e', situated below the said press, a pair of vertically
reciprocating bolts c1, c2 adapted to place the punched-out blank in the said grooves,
two sets of punching or embossing presses arranged obliquely along the said guide
grooves and two sets of holders or locks - adapted to hold the pieces of work
in position until the corresponding punch or stamp has performed its work,
substantially as described.
2. In a machine for the manufacture of steel-pens and similar stamped metal
goods, a work-holder chiefly comprising two pairs of elastic fingers adapted
to move apart alternately, so that when the lower fingers release the piece of
work, the upper fingers catch the new piece of work and then bring it into
the required position limited by the fingers i, 2, 3, 4, substantially as described.
3. The device for limiting the feed-motion of the sheet metal strip to be operated
upon, comprising in its construction a lever b¹, provided with a sliding part b
which carries a stud or projection n adapted to enter slots or gaps formed by
punching, and at the lowest position of the punch to be withdrawn by a coiled
spring a³ as far as is required to prevent the said stud n from re-entering the stamped-
out gaps when the stamp ascends, substantially as described with reference to
Figs. 10 and 11.
4. The mechanism for pushing the stamped-out sheet metal parts through the
matrix, comprising the pins S, S, passing through the stamps a', a³, a striking
device adapted to drive the said pins downward, and to be released when the
stamp recedes, and springs adapted to draw the said pins within the stamps when
the apparatus occupies its normal position, substantially as described with reference
to Figs. 12 and 13.
Dated this 2nd day of January 1896.
FAIRFAX & WETTER,
433, Strand, London, Agents.