Year: 1886

page_text: Date of Application, 16th Aug., 1886.
Complete Left, 16th May, 1887.
Complete Accepted, 9th Aug., 1887.
JEAN PIERRE TOURNIER Mechanical Engineer No. 9 Woodland Terrace Birbeck
Road Enfield in the County of Middlesex do hereby declare the nature of this invention
to be as follows:-
The machine to obtain this result is a bed made with two bars and casting holding
them horizontaly and parallel to each other on the right of and on the bed there is a
head bearing two or a greater number of holow mandrels with chucks, placed above
horizontaly and parallel with the bed, those mandrels are driven by gear wheels
receiving their motion from a single shaft with a fast and two loose pulies placed
above them. Opposite the chucks on the left there is a sadle traveling on the bed by
the help of a pinion and rack, or a leading screw on the sadle and central with the
mandrels two or a greater number of cylinders are inserted. Behind those cylinders
and crosswise on the sadle a slide-toolholder bearing on its uper part three or a
greater number of bosses level with the cylinders made to recieved the tools for forming
the screws or nuts, this slide-toolholder has a transversale motion to and fro given
by a three threaded screw the fore end of witch is cut right handed and working in
the sadle the back end is cut left handed and working in the slide-toolholder in front
of witch there is crank handle. On the two extreme end bosses of the slide-tool-
bolder two stays are fixed horizontaly and consolidated at the farthest end by a cross
bar at the botom of witch there is a leg with a roler bearing on the lower part of the
sadle. On those stays at diferente distances liver stops are placed, at the farthest end
of the stays in the cross bar two or a greater number of cylinders are inserted in
witch as many spindles slide horizontaly and all connected at the rear by gear wheels
and a crank handle, on the fore end of the spindles screw plate or taps are adapted.
At the back of the sadle and behind the slide-toolholder a bracket is fixed holding a
liver with a counter weigh in the rear and a handle coming to the front, from the
joint of the liver on the bracket to the centre of the sadle another joint on the liver
connect it with a perpendicular slide with wings on each side across the sadle, in those
1

page_text: wings two or a greater number of cutting off tools are placed central with the
cylinders in the sadle witch are in line with the holow mandrels.
The working of the machine is as folow,
The sadle is put back to the farthest end of the bed on the right, then wires or rods
of metal are inserted in the holow mandrels and pushed through the cylinders in the
sadle, the rods are tighten by the chucks, the machine is put in motion the slide-
toolholder working to and fro lateraly forme the shape of the screws or nuts, then
the machine is reverse for taping, the spindles with screwplate or taps are pushed
forward and tap the screws or nuts. The machine reverse again for unscrewing, the
spindles are withdrawn back, the liver with perpendicular slide is pressed downward
to cut off the screws or nuts.
The machine continue to work untill the sadle come closse to the chucks. The sadle
is put back and start again as expressed above.
E
.

page_text: COMPLETE DIECIFICATION.
Improvements in Machines for Making Screws and Nuts.
JEAN PIERRE TOURNIER) Mechanical Engineer 9 Woodland Terrace Burbeck Road
Enfield in the County of Middlesex 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 :-
The machine to obtain the result mentioned consists of a bed made of two bars a
and castings holding them together horizontally and parallel to each other. On the
right of and on the bed there is a head T, bearing two or a greater number of hollow
mandrils X X, with chucks Y Y which are placed horizontally and parallel above the
bed. The mandrils X X are driven by gearing wheels receiving their motion from
a single shaft V with a fast pulley V and two loose pulleys placed above the
mandrils.
Opposite the chucks Y Y and on the left is a saddle A traveling on the bed by the
help of a pinion G and rack H or a leading screw on the saddle A. Central and
corresponding with the two or more hollow mandrils are inserted cylindrical
bushes in equal numbers to the hollow mandrils. Behind these cylindrical bushes
and crosswise on the saddle a slide-holder M bearing on its upper part three or a
greater number of bosses N level with the bushes are made to receive the tools to
turn the screws, the nuts or any shaped form of turned parts. The slide-toolholder
has a transversal motion to and fro given by a three threaded screw m, the fore end
of which is cut right handed, the back end is cut left handed and works in the slide
tool holder; m' is a crank to work the screw m. On the two extreme end bosses of
the slide tool holder two stays E E are fixed horizontally which are consolidated at
the farthest end by a crossbar K₁ which is supported by legs e resting by means of a
roller on the lower part of the saddle. On those stays, at different distances, lever
stops L are placed and at the farther end of the crossbar K two or more bushes are
inserted in which as many spindles K K slide horizontally and are all connected in
the rear by gearing wheels K' K2 K3 set in motion by a crank. At the fore end of
the spindles K K are the screw plates or taps K. At the back of the saddle and
behind the slide tool holder a bracket d³ is fixed holding a lever with a counterweight
in d. This lever is jointed in d' on the bracket d'; it has another joint in d' and
carries a handle in do. The joint in d has for object to connect the perpendicular
slide D with the lever. This perpendicular slide has two wings on d' d' across the
saddle, in which wings two or a greater number of cutting tools are placed over
the centre line of the bushes in the saddle which are concentric with the hollow
mandrils XX.
The working of the machine is as follows:
The saddle A is put back to the furthest end of the bed, on the right then wires or
rods or tubes Z Z in metal are inserted in the hollow mandrils X X and tightened in
their chucks and pushed through the bushes in the saddle. The machine is put in
motion, the slide tool holders M working to and fro laterally forme the shape of the
screws or nuts or pieces to be turned to a certain shape.

page_text: The machine is reversed then for tapping the spindles K K with screw plates or
taps K are pushed forward and tap the screws or nuts; the machine is reversed
again for unscrewing, the spindles K K are drawn back, the lever with perpendicular
slide D is pressed downward to cut off the screws or nuts or turned parts and the
operation as described is begun again.
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:
1. The making of two or more screws or nuts or shaped pieces in metal all similar
to each other simultaneously by one single action of the machine.
2. The making simultaneously by one single action of my machine either two or
more screws or nuts or shaped pieces in metal all of different shapes or lengths to each
other or two or more screws or nuts or shaped pieces in metal some of them of
similar shapes or lengths whilst the others may differ in shapes or in lengths.
Dated this day, London, the 16th May 1887.