Improvements in Treadle Driving Mechanism.
Year: 1890

page_text: Date of Application, 4th Mar., 1890
Complete Specification Left, 18th Dec., 1890-Accepted, 4th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in Treadle Driving Mechanism.
HENRI JEAN MARIE FOURNIER, Watch Maker, 190, High Holborn, W.C.,
London, and Caen, France, do hereby declare the nature of this invention to be as
follows:-
This motor aims at. and succeeds in annihilating the dead point in machines
moved by foot.-
This mechanism is composed of the following pieces as represented on the three
diagrams. A four-fold crank shaft 5, four connecting rods, 1, 2, 3, 4, four
levers 11, 11, 11, 11, jointed to the connecting-rods, four screws 9, 9, 9, 9, fixed on
the connecting-rods, and the two pedals, each made up of three parts 6, 7, 8 but
forming a single piece.
In the back part of the machine is, a bar 10 intended to receive both levers and
pedals at their fixed points. On each crank is set a connecting-rod, the pressure
of each pedal on the connecting rods by means of the screws set in them, sets the
crank in motion.
The pedals are placed, the first between the 1st and 2nd connecting-rods: the
second between the 3rd and 4th: their curved parts act upon those same connecting
rod each in its turn; for instance, the first pedal acts upon the second connecting
rod, which makes the crank move the fourth part of a circle then at once the other
part of the pedal acts upon the first connecting rod which makes the crank move
another fourth part of a circle. The crank shaft having thus moved through half
a circle the other half will be made by the second pedal in the same way.
The third diagram shows the second connecting rod under the action of the pedal,
and also shows the form of the pedal. The side which bears is 8.
30th June 1890.
HENRI JEAN MARIE FOURNIER.
COMPLETE SPECIFICATION.
Improvements in Treadle Driving Mechanism.
HENRI JEAN MARIE FOURNIER, Rue de Bras, No. 8, Caen, France, 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 motor aims at and succeeds in annihilating the dead centre point in machines
moved by foot.
The drawing referred to is that furnished with the Provisional Specification.
The pieces of this motor are fastened at the sides between two metals bars;
in front, an iron rod supports the bars, and at the back, a steel bar 10 keeps
the frame work in place and receives the levers and pedals in six grooves
therein; the different barings of the machine are fastened by iron screws on the
supports.
A quadruple crank shaft 5 is made in this manner; the 1st crank is raised above
the straight line joining the two ends of the shaft. The cranks 2 and 3 are level in
horizontal line, the 2nd on the left; the 3rd on the right; the 4th crank shaft
is curved above the straight line joining the two ends of the shaft; the
crank 1 & 2 as well as the 3rd & 4th act conjunction and are arranged on the same
manner, sec Fig. 1."
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page_text: On each crank a connecting rod 1, 2, 3, 4, is secured; in the fork of each con-
necting rod, 1, 2, 3, 4 is fastened by a rivet the end of a lever 11 of which the other
end is secured on the rod 10 and it makes a joint with the connecting rod. On
each connecting rod 1, 2, 3, 4 and placed high enough so as not to touch the crank
shaft is fixed an anti friction screw 9, 9, 9, 9, on which the pressure of parts 6 and 8
of the pedal bears, and also the upward movement of the pedals is produced by
parts, 8, 8.
Each pedal has three parts for operating, one part 8 an oblique line ended by a
hook moves up the pedals, part 6 forming a line at a right angle, almost on a level
with the hook of part 8, continues the working of the machine; part 7 is arranged
for the foot which can work it with perfect ease.
The levers joined to the connecting rods remain always at an angle above the
crank shaft Fig. 2. When the levers and connecting rods are nearest each other,
see Fig. 3" the connecting rod is nearly upright on the crank shaft, part 8 is on
the screw 9 at the starting point of the machine.
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Having now particularly described and ascertained &c., I declare that what I
claim is:
The form of the excentric, and that of the pedals in three parts, the part 6 & 8
the screw on the connecting rod, the working of the connecting-rods and levers;
the transmission of the force which acts on each connecting-rod and which is the
annihilation of the dead centre point in machines worked by foot.
Dated this 16th day of December 1890.
H. FOURNIER.