Year: 1897

page_text: I, ALBERT DESPATURE-COUSIN, of le Wez-Macquart, near Armentières, Department
of Nord, France, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
The apparatus forming the object of the present invention is driven by a moving-
power whatever by the aid of transmission-pulleys; it is characterized by the use of
a friction wheel transmitting the motion of the horizontal driving shaft to a vertical
shaft bearing on its upper part the head of the wheel or rotary work-table; this
transmission being effected by the aid of a friction-plate dependent upon the rotary
motion of the vertical shaft. The friction wheel turning together with the driving
shaft is able to slide along this shaft so as to be brought nearer or farther from the
centre of the friction-plate and to impart to said plate and consequently to the
vertical shaft of the potters wheel a greater or lesser speed according to the different
degrees of speed required by the turner for the various stages of work; to this effect
a treadle is fitted near the turner's left foot which carries along with it a counter-
balancing cord working a forked lever which puts into gear a screw-stock secured to
the friction pulley, the greatest or slightest pressure of the foot on the treadle causing
the driving pulley to move from or towards the centre of the friction plate thus
increasing or diminishing the speed of the shaft of the potter's wheel. For the
putting in and out of gear of the plate, the latter can slide along the shaft of the
wheel on which it only depends for the rotatory motion; when at rest, the plate is kept
upraised by a counterbalancing lever; to put into gear a second treadle within the
reach of the turner's right foot is pressed on the frictionplate and brings it into
contact with the driving friction wheel.
I, ALBERT DESPATURE-COUSIN, of le Wez-Macquart, near Armentières, Department
0 of Nord, France, Manufacturer, 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 potter's wheel which forms the object of the present application is driven by
any motive power whatever, with the aid of transmission pulleys; it allows the speed
.מ

page_text: of the turning-table to vary, at the will of the turner, without changing the speed of
the driving-shaft, so as to instantaneously obtain the speeds necessary for the different.
phases of the work; finally, the present invention enables the immediate stopping of
the potter's wheel without throwing the driving-shaft out of gear.
In the annexed drawing:
Fig. 1 shows an elevated view of the improved potter's wheel.
Fig. 2 is a side view.
Fig. 3 shows a horizontal section on line UV of Fig. 1 and
Fig. 4 shows another horizontal section on line X Y of Fig. 1.
The apparatus is essentially composed of a strong frame at the upper part of which
the turner stands. A vertical shaft G turning in a step brass fixed at the base of the
frame, bears the head of the wheel or rotary worktable I, at its upper part. The
step brass of this shaft is supported by a pedestal in the bearings of which
the horizontal driving-shaft B turns which bears the driving-pulley A at its
extremity.
At a certain point of its length the shaft B has also a pulley D provided with a
slider E and which can slide along the shaft B, at the same time being liable to the
rotary motion of this shaft.
The wheel D has a rubber tyre H which serves as a friction organ for the trans-
mission of the motion of the shaft B to the vertical shaft G, through the intermediary
of a friction plate F depending on the rotary motion of this latter shaft, but which can
slide in the direction of its axis to come into contact with the wheel D or to be
removed from its influence.
As it is easy to understand with each position adopted by the wheel D on the shaft B
a certain speed of the plate F will correspond and consequently the speed of the
shaft G and of the head; the nearer the wheel I) is to the shaft G the greater will be
the speed of the latter. The translation movement of the wheel D along the shaft B
is obtained as follows:
A pedal J placed in proximity with the turner's left foot, has its end attached to a
cable K running over a pulley a suspended to the upper part of the frame, and
another pulley b placed about the bottom of the said frame; this cable is attached at L
(Figs. 2 and 4) to a lever N by means of an eyelet, this lever being pivoted on one
hand to the frame and terminating on the other hand, in a fork O having two pivots
which seize the slider E by the circular groove made in the latter; the cable K
continues beyond its fastening point L and runs over a third pulley c and bears a
counter-poise M.
If the turner presses upon the pedal J the lever N recedes the slider E and the
wheel D from the axle G, and the counterpoise M rises: the speed of the shaft G has
decreased; if the turner ceases to press on the pedal, the counterpoise M brings the
wheel D back to its extreme right position, and the shaft G acquires its maximum
speed; the different degrees of pressure on the pedal cominunicate intermediary
speeds to the potter's wheel according to necessity.
The plate is also worked, in its translation movement along the shaft G, by a
slider l' with a circular groove; this slider is worked by a lever R connected with a
support; it is terminated on one hand by a counterpoise S and provided at its other
extremity with a fork which seizes the slider; in standing position the counterpoise
being much heavier than the plate F with its slider this plate is lifted and is not in
contact with the driving wheel D; to throw the plate into gear with this latter wheel,
the turner presses upon the second pedal T placed within reach of his right foot and
which presses on the plate F; this pedal, as also the first J, has its end pivoted to the
frame. When the pressure on the plate F ceases, the counter-weight S lifts the
latter and the head I stands.
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 A now nottants who d

page_text: a transmission pulley and distinguished by the application of a friction-wheel trans-
mitting the motion of the driving wheel to the shaft bearing the head or work-table,
this transmission being done by means of a friction plate, this wheel being able at
the will of the turner to approach or recede from the center of the plate to
communicate a varying speed to this plate, this translation movement of the friction
wheel being obtained by means of a pedal and of a cord with a counter-weight working
a forked lever which works the slides fixed to the friction wheel, and on the other
hand the plate can be instantaneously thrown into or out of gear at the will of the
turner, being ungeared at rest by a lever which has a counterpoise, and geared, for
work, by means of a pedal pressing upon the plate.
2) A new or improved potter's wheel substantially as described and shown.
L. DUVINAGE,
Patent Agent, 8, Rue des Princes, Brussels, Belgium.