CERTAIN IMPROVEMENTS IN BOZÉRIAN'S BAROMOTOR
Year: 1877

page_text: LETTERS PATENT to Ernest de Pass, of Fleet Chambers, 68, Fleet Street, in the
City of London, Patent Agent, for the Invention of " CERTAIN IMPROVEMENTS
IN BOZÉRIAN'S BAROMOTOR." " A communication from abroad by Gaston
Eugène Elie Bozérian, of 17, Boulevart Saint Martin, Paris, France.
Sealed the 18th December 1877, and dated the 20th July 1877.
PROVISIONAL SPECIFICATION left by the said Ernest de Pass at the Office
of the Commissioners of Patents on the 20th July 1877.
ERNEST DE PASS, of Fleet Chambers, 68, Fleet Street, in the City of London,
Patent Agent. "CERTAIN IMPROVEMENTS IN BOZÉRIAN'S 'BAROMOTOR.""
A com-
munication from abroad by Gaston Eugène Elie Bozérian, of 17, Boulevart Saint
Martin, Paris, France.
.
This apparatus is in principle similar to that set forth in the Specification of
Letters Patent granted to me as a communication from abroad by the said Gaston
Eugène Elie Bozérian, bearing date the 23rd of October, 1876, No. 4102, and has
for its object the utilization of the weight of the human body as motor. It is
composed of two treadles jointed to three levers of equal length turning around
their centre. In one of the treadles the three points of articulation or suspension
are below; in the other, two of the points are above, and the third below. This
arrangement, which constitutes a very great improvement, is to distribute labour
equally on each leg of the operator, experience having shown that one leg becomes
tired much more than the other when the two treadles have their points of articu-
lation or suspension at the same relative level. By raising up the front treadle this
inconvenience is entirely avoided.
On the front treadle is an arm jointed to a connecting rod for setting the apparatus
in motion, and no matter what be the position of the operator the treadles will
always be in a horizontal position, so that the feet of the operator are always flat
thereon, and consequently firm. The weight of the body of the operator being

page_text: thrown forward and backward successively produces a to-and-fro movement, which
can be utilized direct to work a pump, or it may be converted into continuous
circular motion by means of cranks and connecting rods.
A handle is placed on one side of the apparatus, in order that should the operator
be not acquainted with the working of the apparatus he may support himself, while
with the other hand he can give impulse to a Hy wheel so as to turn it in the desired
direction.
A pulley may be mounted on the shaft of the fly wheel, so as to communicate
motion by means of an endless band, cord, or chain to any machine.
To give greater power to the apparatus a rod or bar provided with handles is
attached to the upper part of the connecting rod, in order that the operator as he
works the treadles may act with his hands on these handles according to the
direction of rotation of the fly wheel, and thus avoiding the dead points while
increasing the power produced on the driving shaft.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Ernest de Pass in the Great Seal Patent Office on the 31st December
1877.
ERNEST DE PASS, of Fleet Chambers, 68, Fleet Street, in the City of London,
Patent Agent. CERTAIN IMPROVEMENTS IN BOZÉRIAN'S 'BAROMOTOR.""> A com-
munication from abroad by Gaston Eugène Elie Bozérian, of 17, Boulevart Saint
Martin, Paris, France.
This apparatus has for object the utilization of the weight of the human body as
motor, and is in principle similar to that set forth in the Specification of Letters
Patent granted to me as a communication from abroad by the said Gaston Eugène
Elie Bozérian, dated the 23rd of October 1876, and Numbered 4102.
The annexed Drawings represent two arrangements of apparatus constructed
according to the Invention.
In the first of these arrangements, shown in perspective view, Fig. 1, and in
details, Figures 2, 3, 4, and 5, the apparatus is composed of two treadles A, A',
articulated to three levers of equal length turning around their centre in plumber
blocks on the framework of the "baromotor." In one of the treadles A the three
points of articulation or suspension a, b, c, are below; in the other A¹, on the
contrary, two of these points a¹, b¹, are above, and the third, c, is below. This
arrangement constitutes a very great improvement, and it has been devised to dis-
tribute the labour equally on each leg, it having been proved by experience that
one leg becomes tired much more than the other when the two treadles have
their point of articulation or suspension arranged in the same way and at
the same relative levels. By raising the front treadle A; I now completely remedy
this evil.
On this front treadle A is an arm or rod Bjointed to the connecting rod C, which
works the apparatus. In consequence of this arrangement above described, whatever
be the position of the operator, the treadles are always in horizontal positions in

page_text: such manner that the feet of the operator are flat on them, and are consequently as
firm as possible.
The operator keeps himself on the treadles in the position of a person ascending'
a staircase. He carries the weight of his body forward and backward successively,
and thus produces a to-and-fro movement, which can be utilized direct to work a
pump, for example, or else it can be converted into a continuous circular movement
by means of connecting arms and cranks, as shewn in the Drawings in Fig. 1, at C
and D. In this same Figure will be seen a handle or support E attached to the
framework of the apparatus, and which permits the operator to maintain himself
when he is not accustomed to work the apparatus.. With the other hand he can
give impulse to a fly wheel F to cause it to revolve in the direction desired.
Figs. 2, 3, 4, and 5 are longitudinal and transverse sections of the treadles A, A¹,
in which the points of articulation or suspension of each of them are clearly
shewn.
Another very great improvement consists in prolonging the connecting rod C by
a bar C', as shewn in Fig. 1. It is firmly attached to the said connecting rod C at
its lower end, and it is bent at its upper end to hold the handles G, G¹, at suitable
points. It will be easily understood that the operator while working the treadles
with the feet can act with the hands on the handles G, G¹, in the direction desired,
according to the direction of rotation of the fly wheel, and thus cause the dead
points to completely disappear, while increasing the power developed by the
apparatus. For this purpose, when the apparatus approaches the upper dead point,
the operator pushes or pulls the handles G, G¹, according to the direction of rotation
of the fly wheel, and for the lower dead point he pulls or pushes the same handles.
The handle or support E will always serve to help the operator to work the
apparatus should he not be use to it, whilst from experience he will know how to
work it by pulling or pushing the handles G, G. The said handle or support E
will only be useful when the apparatus is to work direct, that is to say, to produce
a reciprocating movement, such as for working the piston of a pump.
more
Fig. 6 shows in perspective view another arrangement for two or
operators; the same letters of reference indicate similar parts to those shown in
Fig. 1.
I will however point out the following differences, which in certain cases may be
important:
1st. The crank shaft or crank is replaced by a plate or disc D, which is pierced
with holes at different distances from the centre, and in which the pin d, carried by
the connecting rod c, c¹, may be engaged as desired. The most convenient propor-
tion can be established between the power and the resistance, according to each
particular case,
2nd. The gear wheels H, H', permit the speed coming from the driving shaft fto
be increased, and to thus permit the weight and dimensions of the fly wheel to be
reduced.
Instead of constructing separate motors to transmit motion to any machines my
treadles may be so applied to the machines as to cause them to work direct.
My improved apparatus may be readily applied to work a water or discharge
pump, a circular saw, a beating machine, a straw cutter, a hydrotherapic apparatus,
a windlass, &c., &c.
My system of motor with treadles, which I call " baromotor," can be applied to
all machines which it is desired to set in motion, and to whatever application it
shall be put, one man will always do more work than two men, working with their
arms.
Having now described the nature of the said Invention, and in what manner the.
same may be performed, I declare that I claim,―
First. The arrangement of the treadles by which the weight of the operator or
operators is caused to act with equal labour on both legs, as herein described.
Second. Prolonging the connecting rod so as to permit the operator or operators

page_text: to act with the hand in order to pass over and annul the dead points when the
movement of the treadles is converted into continuous circular movement, as herein
described.
In witness whereof, I, the said Ernest de Pass, have hereunto set my hand
and seal, this Seventeenth day of December, One thousand eight hundred
and seventy-seven.
ERNEST DE PASS. (L.S.)