Improvements in Nut Making Machines.
Year: 1889

page_text: Date of Application, 18th June, 1889
Complete Specification Left, 8th July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Nut Making Machines.
I JOHN BRETTELL of Spon Foundry, Spon Lane, West Bromwich, in the County
of Stafford, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the construction and arrangement of parts,
constituting a nut making machine, and its object is to provide, that the back punch
slide of such machines shall be operated upon by a double acting cam, one of which
actions shall cause the said punch to advance and sustain the compression of the
central portion or wad of the nut, when the latter is within the die, and its central
hole is being punched by the front punch, and its other action being for the purpose
of ejecting the compressed wad, which has been forced into the cutting punch; these
two cam actions taking place every revolution of the crank shaft, by which a nut may
be made every such revolution; also to provide a cam action in combination with a
lever arrangement, for the purpose of automatically ensuring the proper removal of
the nut when made.
The details of the other parts of the machine are somewhat similar to those described
in Specification supplied with application for letters patent No. 8416, dated May 21st,
1889, except in the driving gear.
A machine embracing these my improvements, may be briefly described as
follows:-
A strong horizontal frame is provided, consisting of two deep sides, parallel to
each other, and between which most of the mechanism is carried, these two sides
being connected to each other, either by casting them in one piece, or by bolts. At
the one end of this frame is carried the crank shaft, which operates the die slide,
while at the other end of the frame is carried the cam shaft, which said cam operates the
back punch slide. Between these two slides, and connecting the two sides of the
frame, is what I term the bolster bridge piece, which carries the cutter punch, in
which works the back punch, the said back punch being secured to the slide operated
by the cam. This back punch slide is kept against the cam by means of a counter-
weighted bell-crank, situated beneath the machine.
"
This cam is provided with two "dwells" and two swells," which latter are
diametric to each other, the one pressing forward the slide a little further than the
other, which I term the ejecting "swell," while the other I term the pressure
"swell," which is for removing the compressed wad.
Again. At the front of the die slide is carried the said die, in which is further
carried the snap punch, and to this slide is also carried the front punch, which works
within the said snap punch; also the saddle block having a hardened steel collar,
which receives and supports the pressure upon the aforesaid snap punch.
Upon this die slide is further carried a rocking spindle, having at each end a crank
or arm; the one crank or arm being operated upon or lifted, by means of a cam,
being provided upon one of the driving wheels or other suitable place, while the other
crank or arm extends forward, forming a knocker off or extractor, so that when the
aforesaid end is operated by the cam, it shall cause the knocker off end, to travel
rapidly across the face of the die, and effectually removing the now made nut, should
there be any tendency for it to stick there.
The driving gear is of ordinary construction, consisting of two gear wheels,
mounted one upon the crank shaft, and the other upon the cam shaft, and driven by
means of a spur pinion, gearing into both of the said wheels, such spur pinion in its
turn being driven by pulleys &c. as may be desired.

page_text: The back punch slide is further acted upon by a bell crank lever and weight carried
beneath it, so as always to press backward the slide against the cam.
Dated this 17th day of June 1889.
CHARLES T. POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Nut Making Machines.
I JOHN BRETTELL, of Spon Foundry, Spon Lane, West Bromwich, in the county
of Stafford Engineer 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 improvements in the construction and arrangement of
parts, constituting a nut making machine, and its object is to provide, that the back
punch slide of such machines shall be operated upon by a double acting cam, one of
which actions shall cause the said punch to advance and sustain the compression of
the central portion or wad of the nut, when the latter is within the die, and its central
hole is being punched by the front punch; and its other action being for the purpose
of ejecting the compressed wad, which has been forced into the cutting punch; these
two cam actions taking place every revolution of the crank shaft, by which a nut may
be male every such revolution; also to provide a cam action in combination with a
lever arrangement for the purpose of automatically ensuring the proper removal of
the nut when made; also to provide in combination with the back punch slide a
counterweighted bell crank lever for the purpose of keeping the said slide always
against the face of the operating cam.
The details of the other parts of the machine are somewhat similar to those described
in Specification supplied with application for letters patent No. 8416, dated May 21st,
1889, except in driving gear.
In order that the description and explanation of this my invention, and how it may
be performed, may be the better understood, I have appended hereunto illustrative
sheets of drawings, upon which are figured views, and figures of reference, similar
reference figures referring throughout the several views to the same thing or part,
and in which:
Fig. 1, is a longitudinal sectional elevation of the machine.
Fig. 2, is a plan view of the machine.
Fig. 3, is an end wise sectional view of the machine upon line A-B, (see
Fig. 1).
Fig. 4, is a general view of the machine in elevation.
In constructing a machine embracing these my improvements, I should proceed
somewhat as follows:-
:-
A strong horizontal frame 1, is provided, consisting of two deep sides, parallel to
cach other, and between which most of the mechanism is carried; these two sides
being connected to each other, either by casting them in one piece, or by bolts. At
the one end of this frame is carried the crank shaft 2, which operates the die slide 3,
while at the other end of the frame is carried the cam shaft 4, which said cam operates
the back punch slide 5. Between these two slides, and connecting the two sides of
the frame, is what I term the bolster bridge piece 6, which carries the cutter, punch 7,
in which works the back punch &, the said back punch being secured to the slide 5,
operated by the cam 9. This back punch slide 5, is kept against the cam 9, by means
of a counterweighted bell-crank 10, situated beneath the machine.
This cam is provided with two "dwells" 11, & 12, and two
" swells 13 & 14,
which latter are diametric to each other, the one 13, pressing forward the slide a little
further than the other, which I term the ejecting "swell," while the other 14, I term
the pressure
swell," which is for removing the compressed wad.
"
Again. At the front of the die slide is carried the die 15, in which is further
carried the snap punch 16, and to this slide is also carried the front punch 17,

page_text: which works within the said snap punch 16; also the saddle block 18, having a
hardened steel collar 19, which receives and supports the pressure upon the afore-
said snap punch.
Upon this die slide is further carried a rocking spindle 20, having at each end
a crank or arm; the one crank or arm 21, being operated upon or lifted, by means
of a cam 22, (see Fig. 3) being provided upon one of the driving wheels or other
suitable place, while the other crank or arm 23, extends forward, forming a knocker
off or extractor, so that when the aforesaid end is operated by the cam 22, it shall
cause the knocker off end 23, to travel rapidly across the face of the die, and
effectually remove the now made nut, should there be any tendency for it to
stick there.
Thus the action of the machine would be somewhat as follows:-
Upon placing the heated bar of iron from which the nuts are to be made, in
front of the die 15, the slide 3, advances towards the fixed cutter punch 7, which
latter forces the piece from which the nut is to be made into the die 15, and on to
and around the punch 17. In doing this however, the snap punch 16, is pushed
backward somewhat, until it presses against the face of the hardened collar 19,
by which it is sustained under the pressure thus determining the thickness of the nut.
At the same time that the die slide is advancing the punch 17, the swell 14 upon
the cam, advances the back slide 5, until the punch reaches the front of the fixed
cutter punch just at the moment of the greatest pressure of the punch 17, so that
the faces of the said punches compress the metal into shape and solidifies it.
Just prior however, to the extreme stroke of the die slide, the back punch slide
retires, and the punch 17, advancing still further, thus punches and forces the wad
into the cutter punch.
The die slide now retires, leaving the wad in the cutter punch 7, and for a time
carries back with it the block 18, until the latter reaches the stop 26, when its further
progress will be arrested, the collar driving forward the snap punch 16, and thereby
ejecting the now made nut.
Following very closely upon the retirement of the die slide, the back punch slide
advances by reason of the swell 13, upon the cam, and pushes forward the punch 8,
thereby ejecting the wad.
Immediately that the wad is ejected, the cam 22, (see Fig. 3) lifts the arm 21,
and thereby operates the knocker off as before described.
Thus in every revolution of the crank, a nut may be completely made, and the tools
ready for a repeat making.
The driving gear is of ordinary construction, consisting of two gear wheels,
mounted one upon the crank shaft, and the other upon the cam shaft, and driven by
means of a spur pinion 24, gearing into both of the said wheels, such spur pinion in
its turn being driven by pulleys 25, &c. as may be desired.
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. In a nut making machine, the operating of the back punch slide by means of a
double cam baving thereon a pressure swell, and a wad ejecting swell, substantially
as described and illustrated проп the drawings.
2. In a nut making machine, the combination therewith of the knocking off or
extracting arrangement constructed and operating substantially as described and
illustrated upon the drawings.
3. In a nut making machine, the combination with the back punch slide, of the
counterweighted bell crank lever, constructed and operating substantially as set forth
and shown, and for the purpose specified.
Dated this 6th day of Tul., 1990
CHARLES T. POWELL,
12, Cherry Street, Birmingham, Applicant's Agent.