Improvements in Machines for Screwing or Rolling Screws or Bolts.
Year: 1896

page_text: Date of Application, 31st Mar., 1896
Complete Specification Left, 31st Dec.. 1895-Accented 31st Mar
1907
PROVISIONAL SPECIFICATION.
Improvements in Machines for Screwing or Rolling Screws or
Bolts.
I, FÉLICIEN CORNIL of Route de Montigny, Gilly in the Kingdom of Belgium,
Bolt Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This new machine offers the advantage of being able to produce with the same
screwing or rolling blocks different threads of any degree of slant and also of
either straight or conical screw-cutting being performed with equal efficiency.
A horizontal actuating or driving shaft furnished with a fly-wheel and a fixed
and a loose pulley, carries a toothed pinion which engages with a toothed wheel
operating another shaft parallel to the first and which carries a bevel wheel. The
latter engages with two bevel wheels loosely mounted on a transverse shaft which
carries at its ends two bevel wheels which engage respectively two bevel wheels
turning on vertical posts and cast in a single piece with two spur-wheels.
On each vertical post is pivoted, by means of two extensions, a slide-bearer, on
each side of the spur-wheels each of which engages with a rack-slide, occupying its
corresponding slide bearer.
The rack-slides are cast in one piece with grooved pieces intended to receive
screwing or rolling blocks of square bar-steel profiled the whole length of their four
faces. The two spur-wheels with their corresponding rack-slides are arranged at a
different level so as to make the screwing or rolling blocks disposed the one above
the other.
The screwing or rolling blocks are keyed in the grooved-pieces by means of iron
or steel pieces intended to receive the screwing or rolling blocks and to give them
the desired position in order to worm or screw conical shaped pieces or pieces of
varying dimensions, between their profiled surfaces which face one another, owing
to the grooved-pieces, the groove of the lower one being provided in its upper side
and that of the upper one in its lower side. On the top grooved-piece a roller
bears and on the lower another roller presses. These rollers are connected by a
pulley-frame carrying a threaded rod with two nuts for the purpose of regulating
the amount of pressure to be exercised on the grooved pieces, in order to prevent
any bending of the slides.
The rods enter sockets which are lodged in grooves where they can move in a
ateral direction and follow the obliquity assumed by the slides.
Moreover the grooved pieces are furnished at their back-side with a little groove
n which runs the flange of the rollers obliging the latter to follow, in whatever
irection the slide-bearers may take.
The obliquity of the slides is effected by turning the slide-bearers on the vertical
osts. The opposite end of each of the slide-bearers is furnished with a hinged
onnecting-rod, held, by means of a binding-screw, on two tongue-rings pivoted on
wo other vertical posts.
The reciprocating movement of the slides is effected by the alternate engage-
ent of the loose wheels of the transverse shaft by means of a coupling-box
perated by a lever. For the starting and forward movement, the workman presses
Da nedal which

page_text: means of the lever jointed at its lower end to the pedal, at an intermediate point to
the coupling box and at its upper end to a rod sliding in a ring secured to one of
the slides. The play of this rod is governed by removable stops.
The return movement is effected automatically by the shock of the ring of the
slide against the inner stop, which has for effect to push the lever backwards and
to engage the coupling box with the opposite loose wheel by the help of a counter-
weight fixed to the treadle-axle.
This counter-weight is intended to keep the coupling box in position whilst
working the machine, during the return movement.
. In front of the machine is fixed a support in which slides, freely and rotably,
a rod furnished with a handle.
The end opposite the rod carries a piece cut in such a manner that it holds the
head of the screws or bolts no matter of what shape they may be.
The rod serves to introduce the piece to be screwed or wormed between the
blocks, the return is effected by the forming of the thread.
The screwing or rolling blocks may be changed to obtain a thread or pitch of
any desired shape or height.
The slant of the thread is governed by the obliquity of the slides.
D15
1
L. DUVINAGE,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Screwing or Rolling Screws or
Bolts.
1, FÉLICIEN CORNIL of Route de Montigny, Gilly in the Kingdom of Belgium,
Bolt Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described in and by the
following statement :-
This invention has for its object a machine for cutting the thread of screws and
screw-bolts of all kinds, by rolling of the piece to be worked, while hot, between two
superposed screw-tool blocks borne by obliquely adjustable slides.
This machine is represented in the accompanying drawings in Fig. 1 by a
transverse vertical section taken on the line a-b; in Fig. 2 by a broken plan view
on the line e-f; in Fig. 3 by a longitudinal vertical section on c-d; in Fig. 4 by
a plan view. In Fig. 5 a transverse section of the screwing blocks is given.
The actuating or driving shaft A furnished with a fly-wheel and a fixed and a
loose pulley, carries a toothed pinion B which engages with a toothed wheel C
operating a shaft D which carries a bevel wheel E. The latter engages with two
bevel wheels F, G loosely mounted on a transverse shaft H which carries at its
ends the bevel wheels J, K. These engage respectively the bevel wheels L, M
turning on vertical posts T, U and cast in a single piece with the spur-
wheels, N, O.
On the pillars T, U are pivoted slide-bearers R, S on each side of the
wheels N, O each of which engages with a rack-slide P, Q.
The latter are cast in one piece with the grooved-pieces D' E' intended to
receive the screwing-blocks-F, Gof-square-bar-steel profiled the whole length of
their four faces.
The screwing blocks are adjusted in the grooved pieces, by means of iron or
steel pieces HI' intended to receive the screwing blocks and to give them the
desired position in order to worm or screw conical-shaped pieces or pieces of

page_text: varying dimensions. The adjusting pieces H¹ I¹ may be of square or trapezoid
section.
The screwing blocks F G and the adjusting pieces H' I are fastened in their
respective grooved piece or holder D1 or E¹ by means of screw-bolts 1 passing
5 through the end walls of the holders.
On the top grooved-piece D¹ the rollers K¹ bears and on the lower one E¹ the
rollers J presses.
These rollers are connected by a pulley-frame carrying a
threaded rod 2 with two nuts 3, 4 for the purpose of regulating the amount of
pressure to be exercised on the grooved pieces, in order to prevent any bending of
0 the holders D' E'.
The rods 2 enter the flanged sockets L' M' which are lodged in grooves O¹ P¹
(arranged in the parts 5, 6 of the frame-of the machine) where they can move in a
lateral direction and follow the obliquity assumed by the slides as shown in
Fig. 2.
The rods 2 of the pulley frames may be lowered or raised in the sockets L' M'
and consequently in the grooves O' P by means of the nuts 3, 4, so as to increase
or decrease the amount of pressure exercised on the grooved pieces D' E'.
Moreover the grooved pieces D' E' are furnished with a groove 7, in which runs
the flange 8 of the rollers obliging the latter to follow in whatever direction the
slide-bearers may take.
The obliquity of the slides is effected by the revolution of the slide-bearers on
the posts T, U. The opposite end of each of the slide bearers is furnished with a
hinged connecting-rod V, W held, by means of a binding-screw Z in two tongue-
rings X, Y fixed on the vertical posts B¹ C¹.
The reciprocating movement of the slides is effected by the alternate engage-
ment of the loose wheels F, G by means of the coupling-box I operated by the
lever Q.
For the starting and forward movement, the workman presses on the pedal T
which engages the coupling box I with one of the loose wheels F, G by means of
the lever Q pivoted at its lower end to the pedal T, at an intermediate point to
the coupling box I by means of the ring 9 and at its upper end to the rod R'
sliding in a ring R" secured to the slide D¹. The play of this rod is governed by
the moveable stops S¹.
The return movement is effected automatically by the shock of the ring R of
the slide against the inner stop S₁ which has for effect to push the lever Q¹
backwards aud to engage the coupling box I with the opposite loose wheel by the
help of a counter-weight Y¹ fixed to the treadle-axle T.
This counter-weight Y' is intended to keep the coupling box in position whilst
working the machine, during the return movement.
In front of the machine is fixed a support X' in which slides, freely and rotably,
rod U furnished with a handle V'.
The opposite end of the rod U₁ carries a piece cut in such a manner that it
olds the head of the screws or bolts no matter of what shape they may be.
The rod U serves to introduce the piece to be screwed or wormed between the
crewing blocks.
The screwing blocks may be changed to obtain a thread or pitch of any desired
bape or height.
The slant of the thread is governed by the obliquity of the slides.
This new machine offers the advantage of being able to produce with the same
crew-tool blocks different threads of any degree of slant and also of either straight
conical screw-cutting being performed with equal efficiency.
Having now particularly described and ascertained the nature of this said inven-
on and in what manner the same is to be performed, I declare that what I
aim is :-
1. A machine for rolling bolts and screws of all kinds, as above described and
shewn in the accompanying drawings.

page_text: 2. In a machine for rolling bolts and screws of all kinds, screw-tool blocks laid
horizontally on each other and lodged in channels of a piece with the rack-bar
slides, operated by toothed-wheel work, and working in guide-bearers, which are
adjustable to vary the slant of the thread.
3. In a screw-cutting machine as designed under Claims 1 & 2 screw-tool
blocks, which can be transversely inclined by means of a supporting piece of
trapezoid section for conical rolling.
Dated this 30th day of December 1896.
L. DUVINAGE,
Agent for Applicant.