Improvements in Nut Making Machines.
Year: 1889

page_text: Jale of Application, 21st May, 1889
Complete Specification Left 20th June 1889-Accepted, 10th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Nut Making Machines.
I JOHN BRETTELL, of Spon Foundry, Spon Lane, West Bromwich, Staffordshire,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the construction and arrangement of the
parts constituting a nut making machine, and its object is to provide an improved
general arrangement of such parts, by which all springs with their attendant
uncertainty is removed; an improved cam arrangement for imparting the necessary
motion to what I term the back punch; improvements in the construction of the
punches and holders by which greater facilities are given for ready adjustment;
and an improved arrangement for imparting an intermittent motion to the back
punch slide.
In constructing a machine embracing these my improvements, I should proceed
somewhat as follows:-A strong frame (horizontal) consisting of two deep sides,
parallel to each other, between which most of the mechanism is carried; these two
sides being connected to each other, either by casting or by bolts, (the latter preferred),
at their one driving end, and also at about midway in their length, this latter I term
the bolster bridge.
At its driving end, I provide a crank shaft, which may be driven by means of spur
gear and belt pulleys, or driven direct, without the said spur gear, according to the
size of machine.
Again. Between the two parallel sides of the frame, I provide two horizontal
slides, one upon either side of the bolster bridge. One of these slides is connected to
and operated by the crank shaft, by means of a connecting rod, which I will term the
die slide, while the other, which I term the intermittent slide, is operated by a
compound intermittent motion derived from the crank shaft, and also from the die
slide, as hereinafter explained.
At the front end of the die slide,. provision is made to receive the die, which is
firmly held in position, by means of a screw down gland, which latter also carries the
necessary guide surfaces and stops, for the feed bar, from which the nuts are to be
made. At the rear of the said die, a large opening or recess is made to a suitable depth,
where again a smaller opening or slot is cut through.
At the rear end of this large opening or recess, a further somewhat narrower recess
is formed to receive the punch holder. This said punch holder, consisting of two
parts, in which when together as one, a screwed hole is made to receive the punch,
the joint of such two parts being in an horizontal central line of such hole, split nut
wise; these two parts being firmly held in their position by a screw down gland with
punching pin. The rear part of the punch is screw-threaded to suit the split
holder, and thence extends forward into the snap punch. This snap punch has a
central hole into which the said punch enters, while its exterior conforms to the
interior of the die, which is the external sectional form of the nut.
Again. Beneath the open through slot in the die slide, I provide a cross piece,
which is a part of, or connected rigidly to the frame, and upon which is mounted an
upright forked stop, which extends upwards into the large recess in the slide, its
forked part affording freedom for the to and fro motion of the punch.
In this recess I further provide what I term a saddle block, the rear part of which
is formed into two sides, one of each passing along each side of the aforesaid upright
stop, while in its front end is carried a hardened collar, through which the panch
works; the purpose of this hardened collar being to come in contact with 'and
arrest the backward motion of the snap punch.
Again. To the bolster bridge, as before intimated, I attach by adjustable screw pins,
the bolster, which carries the cutting punch, and through which latter works the back

page_text: wad punch. This back wad punch is carried in a split screw holder, similar except in
detail of form, to that already described for the central punch at the other end of the
machine. In this case however, I obtain more ready adjustment in the length of the
punch, by extending, the length of the bottom half of the said holder, and securing it
by screw down gland, independently of the upper half, the said upper half being
further rigidly cramped to the lower half by means of a hoop, having a screw set pin
therein, or its equivalent.
The motion to this back punch slide is imparted as follows:-
Upon the outer end of the crank shaft at the one side of the machine, is a
cam, which operates a connecting rod extending therefrom to the other end of the
machine.
The cam end of this rod is made to embrace the said cam, and provided with
adjustable hardened surfaces whereon the cam acts.
The other end of this rod, is connected to the upper or crank pin end of a crank,
which latter is carried upon a rock or weigh shaft, which is carried in suitable
bearings across the end of the machine frame.
Central with the machine and upon this shaft, I mount a push or pressure lever, the
upper end of which is formed to press against the rear end of the back punch slide,
the surface at such part upon the said slide, and the surface of the pressure lever,
being chilled or hardened for that purpose. By these means provision is made for. the
forward notion of the said slide.
Again. Upon the upper part of the die slide near its rear end, I provide a raised
snug to which is secured the one end of a rod, which said rod extends to the other end
of the machine, above the back punch slide; and upon this back punch, slide is a
second similar snug, through which this rod is free to slide.. This end of the rod. is
further screwthreaded, so that upon it I place at a convenient distance apart, two,
pair of lock nuts, one, pair upon either side. of the said snug; so that while. the
crankshaft cam gives the slide a forward motion, the screwed rod. by means of
the one pair-of-lock nuts, may impart a further forward motion to eject the
punched and pressed wad, and also imparts by means of the other pair of lock
nuts, the return motion of the said slide."
00
1
1000
CHARLES T POWELL,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Nut Making, Machines.
I JOHN BRETTELL of Spon. Foundry, Spon Lane West Bromwich, Staffordshire,
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 the
parts constituting a nut making machine, and its object is to provide, an improved
general arrangement of such parts, by which all springs with their attendant
uncertainty is removed; an improved cam arrangement for imparting the necessary
motion to what I term the back' punch'; improvements in the construction of the
punches and holders, by which greater facilities are given, for ready adjustment; and
an improved general arrangement for imparting, an intermittent motion to the back
punch slide.
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 illustrated 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 side elevation, Fig. 2, an end elevation, and Fig. 3; a plan (with part of
the driving gear removed) of a machine embracing these my improvements.

page_text: Fig. 4, is an end sectional view of Fig. 3, upon line A-B.
Fig. 5, is an end sectional view of Fig. 3, upon line C-D.
Fig. 6, is a longitudinal sectional elevation upon line E-F, (Fig. 3).
Fig. 7, is an enlarged view of the cam arrangement for operating the back punch.
Fig. 8, is a sectional view of Fig. 7, upon line G-A.
Figs. 9, 10, 11, 12, 13, 14, & 15, shew enlarged views of various detail parts.
In constructing a machine embracing these my improvements, I should proceed
somewhat as follows:-
A strong frame 1, is provided, consisting of two deep sides, parallel to each other,
between which most of the mechanism is carried; these two sides being connected
to each other either by casting or by bolts 2, (the latter preferred), at their one driving
end, and also at about midway in their length, this latter 1 term the bolster bridge 3.
At its driving end I provide a crank shaft 4, which may be driven by means of
spur gear 5, and belt pulleys 6, or driven direct, without the said spur gear, according
to the size of machine.
•
1
Again. Between the two parallel sides of the frame, I provide two horizontal
slides 7 & 8, one upon either side of the bolster bridge 3.
The slide 7, is connected to and operated by the crank shaft 4, by means of a
connecting rod 9, which I term the die slide, while the other, which I term the inter-
mittent slide 8, is operated by a compound intermittent motion derived from the
crank shaft 4, and also from the die slide 7, as hereinafter explained.
"
At the front end of the die slide 7, provision is made to receive the die 10, which
is firmly held in position by means of a screw down gland 11, which latter also
carries the necessary guide surfaces 12, and stops 13, for the feed bar, from which
the nuts are to be inade. At the rear of the said die, a large opening or recess 14,
is made to a suitable depth, where again, a smaller opening or slot 15, is cut through.
At the rear end of this large opening or recess 14, a further somewhat, narrower
recess is formed to receive the punch holder 16. This said punch holder consists of
two parts (see Fig. 10,) in which when together as one, a screwed, hole 17, is made
to receive the punch 18, the joint of such two parts being in an horizontal central
line of such hole, split nut wise; these two parts being firmly held in their position
by a screw down gland 19, with pinching pin. The rear part of the punch is screw-
threaded to suit the split holder, and thence extends forward into the snap punch 20.
This snap punch has a central hole into which the said punch enters, while its
exterior conforms to the interior of the die 10, which is the external sectional form of
the nut.
Again. Beneath the open through slot 15, in the die slide 7, I provide a cross
piece 21, which is a part of, or connected rigidly to the frame; and upon which is
mounted an upright forked stop 22, which extends upwards into the large recess in
the slide, its forked part affording freedom for the to and fro motion of the punch 18.
In this recess I further provide what I term a saddle block 23, the rear part of which
is formed into two sides, one of each passing along each side of the aforesaid upright
stop 22, see Fig. 3, while in its front end is carried a hardened collar 21, through
which the punch works; the purpose of this hardened collar being, to come in contact
with and arrest the backward motion of the snap punch 20, (see Fig. 3).
Again. To the bolster bridge 3, as before intimated, I attach by adjustable screw
pins, the bolster 25, which carries the cutting punch 26, and through which latter,
works the back wad punch 27. This back wad punch is carried in a split screw
holder 28, similar except in detail of form to that already described for the central
punch at the other end of the machine. In this case however I obtain more ready
adjustment in the length of the punch, by extending the length of the bottom balf
of the, said holder, at 29, and securing it by screw down gland 30, independently of
the upper half; the said upper half being further rigidly cramped to the lower half
by means of a hoop 31, having a screw set pin therein, or its equivalent.
The motion to this back punch slide is imparted as follows:
Upon the outer end of the crank shaft 4, at the one side of the machine is a
cam 32, which operates a connecting rod 33; extending therefrom to the other end

page_text: of the machine. The cam end of this rod is made to embrace the said cam, and pro-
vided with an adjustable hardened surface 34, whereon the cam acts. The other end
of this rod 33, is connected to the upper or crank pin end of a crank 35, which
latter is carried upon a rock or weigh shaft 36, which is carried in suitable bearings
across the end of the machine frame. Central with the machine and upon this
shaft 36, I mount a push or pressure lever 37, the upper end of which is formed
to press against the rear end of the back punch slide 8, the surface at such part upon
the said slide, and the surface of the pressure lever, being chilled or hardened for
that purpose. By these means provision is made for the forward motion of the said
slide 8.
Again. Upon the upper part of the die slide 7, near its rear end, I provide a
raised snug 38, to which is secured the one end of a rod 39, which said rod extends
to the other end of the machine, above the back punch slide 8, and upon this back
punch slide is a second similar snug 40, through which this rod is free to slide. This
end of the rod is further screwthreaded, so that upon it I place at a convenient
distance apart, two pair of lock nuts 41, and 42, one pair upon either side of the
said snug; so that while the crank shaft cam 32, gives the slide a forward motion,
the screwed rod 39, by means of the one pair of lock nuts 41, may impart a further
forward motion to eject the punched and pressed wad, and also imparts by means
of the other pair of lock nuts 42, the return motion of the said slide. Upon the
front of the lever 37, I provide a preponderating weight 43, which tends to
keep forward the rod 33, and thus lessens the blow of the cam 32, upon the
hardened surface 34.
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, upon
the bracket surface 12, and against 13, the die 10, advances towards the fixed
cutter punch 26, which latter forces the piece from which the nut is to be made,
into the die 10, and on to and around the punch 18. In doing this however, the
snap punch 20, is pushed backward somewhat, until it presses against the face of
the hardened collar 24.
This saddle piece 23, being loose, will necessarily be forced backward, until the
advancing slide at 14', comes in contact therewith, and supports the said saddle
with its hardened collar 24, against the snap punch 20, while the latter is com-
pressing and solidifying the metal into shape, between its face and the face of the
punch 26; meanwhile the punch 27, having further advanced somewhat by means
of the lever 37, part punches the hole in the nut, leaving only a small portion or
"wad" between the faces of the two punches 18, & 27.
The slide 8, now commences to retire, and inasmuch as the (slide 7) punch 18,
has not quite reached its full stroke, the compressed wad is punched and forced
thereby from the body of the nut into the cutter punch 26.
The slide 7, now retires, leaving the wad in the punch 26, and for a time
carries back with it the block 23, until the latter reaches the stop 22, when its
further progress will be arrested, the collar 24, driving forward the snap punch 20,
(as seen in Fig. 6) and thereby ejecting the now made nut.
Immediately this is done, the die slide 7, in its continued return, carries with it
the rod 39, until the lock nuts 41, come in contact with the snug 40, and carry
forward the slide 8, and with it the punch 27, which latter thereby ejects from
within the cutting punch 26, the pressed wad; when the entire processes will be
again repeated.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is :-
:-
1st. The general combination and arrangement of the parts constituting a nut
making machine, that is to say :-The die slide being driven direct by crank shaft in
combination with a moveable pressure saddle block, carrying a loose hardened collar,
operating upon the snap punch, and further carrying a split screwed punch holder

page_text: secured as shown, and further operating an intermittent rod, acting upon the rear
slide in conjunction with a pressure lever, the latter being operated by the cam
arrangement, all constructed, arranged, and operating substantially as hereindescribed
and illustrated upon the drawings.
2nd. In a nut making machine, the combination and arrangement of the cam 32,
and rod 33, operating the rock shaft 36, and pressure lever 37, with the back punch
slide 8, substantially as shown and described, and for the purposes specified.
3rd. In a nut making machine, making the punch holders in two screwed halves,
for the purposes of ready adjustment, and securing the said halves by set pins, all
substantially as shown and described.
Date: 10.
Tn 1000
CHARLES T. POWELL,
12, Cherry Street, Birmingham, Applicant's Agent.