Improvements in Machinery for Manufacturing Nuts for Bolts and other similar Articles.
Year: 1886

page_text: Date of Application, 18th Aug., 1886.
Complete Left, 18th May, 1887
Complete Accepted, 18th Aug., 1887
Improvements in Machinery for Manufacturing Nuts for Bolts and
other similar Articles.
1, ARMAND JULES LE BLANC of 52 Rue du Rendez-vous, Paris France Engineer
do hereby declare the nature of this invention to be as follows:-
My invention has for its object improvements in machinery for manufacturing nuts
for bolts and other similar articles whereby great simplicity in manufacture and in
action is obtained and whereby all the parts of such machinery are easy of access for
cleaning and other purposes.
According to this invention the machine is composed essentially of a strong frame
carrying at its upper part a strong box or casing which contains a spring for regulating
the different pressures desired. At the lower part of said frame I form two platforms
in which turns a shaft receiving a rotary motion by means of a wheel and endless
screw actuated by a pulley and band.
Between the upper part of the frame and the shaft below moves vertically a central
piece which is guided truly against the frame aforesaid, and which at its upper part
carries two horns in which latter travel rollers forming part of a horizontal carriage.
The central piece is caused to move vertically and alternately by eccentrics keyed
upon the horizontal shaft rotated by the endless screw and wheel, which eccentrics
communicate motion to it by means of rollers.
In the centre of the machine there are two vertical spindles one passing through the
spring box or casing and fixed at its upper end to the cover of same, the other placed
immediately below same and suitably attached at its lower end to receive motion by
means of an eccentric and roller.
A steel tool is placed vertically around the top spindle aforesaid and receives motion
by means of an eccentric, a connecting rod and an articulated lever. This tool passes
through a block or mould provided and in which the nut to be manufactured is
formed, the nut having been previously shaped by tools fixed to the horizontal carriage
aforesaid.

page_text: The two vertical spindles above mentioned serve to make and to clear the hole
through the nut, the mould or block the calibre of the nut, and the tool placed around
the upper vertical spindle makes one flat face, and the tools attached to the horizontal
carriage form the other face.
The nut being held in the mould or block is shaped and stamped by the tools 5
aforesaid which receive motion from the horizontal shaft below, and when the tools
are separated which occurs by the lowering of the eccentrics in the revolution of the
sbaft the nut will be thrown out by the action of the articulated lever above mentioned
and will fall upon an inclined plane formed on the central piece of the machine.
A nut will fall through manufactured at each revolution of the shaft, a bar of iron 1
at red heat being fed between the lower tools and the block or mould.

page_text: other similar Articles.
I, ARMAND JULES LE BLANC of 52 Rue du Rendez-vous, Paris, France 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 :-
My invention has for its object improvements in machinery for manufacturing nuts
for bolts and other similar articles whereby great simplicity in manufacture and in
action is obtained and whereby all the parts of such machinery are easy of access for
cleaning and other purposes.
According to this invention and as will be fully understood by reference to the
vertical section shewn on the accompanying drawing, the machine is composed
essentially of a frame A carrying at its upper part a box or casing B which contains
a spring or several springs for regulating the different pressures desired. The
springs serve by their flexion to compensate for the variations of the dimensions of
the iron produced by inequality of heating; the initial compression of the said springs
is regulated in advance so as to be suitable to the thickness of the nuts or other
articles to be forged.
The adjustable disc spring compressor carries about its centre the small upper punch
as hereafter described. In some cases I may substitute for the frame with central
springs as shown on the drawing, several boxes with springs placed directly on each
of the uprights of the machine.
At the lower part of said frame I form two bearings in which turns a shaft C
receiving a rotary motion by means of a wheel and endless screw D actuated by a
pulley and band.
Between the upper part of the frame A and the shaft O moves vertically a central
piece E which is guided against the frame aforesaid.
The central piece E is caused to move vertically and alternately by eccentrics H
keyed upon the horizontal shaft O rotated by the endless screw D and wheel before
described which eccentrics H communicate motion to it by means of rollers I turning
on axes in the vertically rising and falling central piece Ĕ.
In the centre of the machine there are two vertical plungers, one J passing through
the spring box or casing and fixed at its upper end to the cover or disc spring
compressor before mentioned, the other plunger K is placed immediately below same
and suitably provided with a guided head carrying a roller attached at its lower end,
the said plunger K receiving motion by means of an eccentric L on shaft C.
A steel tool P is placed vertically around the top plunger J aforesaid and receives
motion from the shaft O by means of an eccentric M, a connecting rod N and an
articulated lever O. This tool P passes into a block or mould Q in which the nut to
be manufactured is formed.

page_text: The two vertical plungers J and K above mentioned serve to make and to clear the
hole through the nut, the mould or block Q to form the calibre of the nut, and the
tool P placed around the upper vertical plunger J makes one flat face, and the tools R
attached to the carriage E form the other face.
The drawing shews the tools at the bottom of their travel.
The nut being manufactured and held in the mould or block is shaped and stamped
by the tools aforesaid which receive motion from the horizontal shaft below and when
the tools are separated which occurs by the lowering of the eccentrics by the revolution
of the shaft C the nut will be thrown out by the action of the articulated lover O above
mentioned and will fall upon an inclined plane formed on the central piece of the
machine.
A nut will fall through manufactured, at each revolution of the shaft C, a bar of
iron at red heat being fed between the lower tools and the block or mould.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
-
1st. In a machine for manufacturing nuts for bolts and other similar articles, the
springs or central springs in box or casing B together with the means described for
regulating their tension or compression, whereby they are caused to compensate for
the variations of the dimensions of the iron and for obtaining different pressures all
substantially as herein set forth.
2nd. The machinery for manufacturing nuts for bolts and other similar articles,
essentially composed of spring or springs, box or casing B, plungers J and K, tool P
mould Q, central piece E, all actuated from shaft substantially as described and
show with reference to the accompanying drawings together with any mere
modification or modifications thereof.