AN IMPROVED APPARATUS FOR ASCERTAINING AND REGISTERING THE SPEED OF MACHINERY WITHOUT EXTERNAL TRANSMISSION
Year: 1876

page_text: LETTERS PATENT to Henri Adrien Bonneville, of the British and Foreign
Patent Offices, 18, Rue de la Chaussée d'Antin, Paris, France, and 6, Piccadilly,
in the County of Middlesex, Patent Agent, for the Invention of "AN
IMPROVED APPARATUS FOR ASCERTAINING AND REGISTERING THE SPEED OF
MACHINERY WITHOUT EXTERNAL TRANSMISSION." A communication from
Claude Marie Bathias, residing at 164, Rue Montmartre, Paris, France, afore-
said, Mechanical Engineer.
Sealed the 15th December 1876, and dated the 19th June 1876.
PROVISIONAL SPECIFICATION left by the said Henri Adrien Bonneville at
the Office of the Commissioners of Patents on the 19th June 1876.
HENRI ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18, Rue
de la Chaussée d'Antin, Paris, France, and 6, Piccadilly, in the County of Middlesex,
Patent Agent.
"AN IMPROVED APPARATUS FOR ASCERTAINING AND REGISTERING
THE SPEED OF MACHINERY WITHOUT EXTERNAL TRANSMISSION." A communication
from Claude Marie Bathias, residing at 164, Rue Montmartre, Paris, France,
aforesaid, Mechanical Engineer.
The Invention relates to an apparatus designed to ascertain the number of revolu-
tions of the main shaft of any kind of machinery whatever. The said apparatus consists
substantially of a circular and annular metal box, which is mounted on the shaft to
which it is fixed by means of screw nuts. Upon and around the part of the said box
forming the ring, and through which passes the shaft, is fixed or cast on a metal collar,
the periphery of which is wedge-shaped and consequently the central line a circular
edge. Around the collar is mounted upon axes supported by two circles fastened
on to the annular part a series of rollers, the periphery of which forms a groove, the
shape of which corresponds to that of the periphery of the collar upon which the
said rollers rotate. The said rollers during the operation successively rotate into
a metal half crown in which they are inserted, the inner periphery of which being
wedge shaped and consequently the central line a semicircular edge like that of the
collar fixed on the shaft, and which corresponds to the groove of the rollers. To
this half crown, and to maintain its equilibrium on the rollers and prevent it from
following the rotatory motion of the box, are suspended a counterpoise and the
box containing the gearing and the needle dials of an ordinary counter which
register the number of revolutions of the shaft. The rotatory motion of the latter

page_text: is transmitted by a projection or cam fixed or cast on the ring of the box sur-
rounding the shaft, and which on each revolution of the latter acts on the free end
of a lever acting on a catch operating a ratchet wheel connected to the gearing of
the counter.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henri Adrien Bonneville in the Great Seal Patent Office on the
16th December 1876.
HENRI ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18, Rue
de la Chaussée d'Antin, Paris, France, and 6, Piccadilly, in the County of Middlesex,
Patent Agent. "AN IMPROVED APPARATUS FOR ASCERTAINING AND REGISTERING
THE SPEED OF MACHINERY WITHOUT EXTERNAL TRANSMISSION." A communication
from Claude Marie Bathias, residing at 146, Rue Montmartre, Paris, France,
aforesaid, Mechanical Engineer.
The Invention relates to an apparatus designed to ascertain the number of
revolutions of the main shaft of any kind of machinery whatever. The said
apparatus consists substantially of a circular and annular metal box, which is
mounted on the shaft to which it is fixed by means of screw nuts. Upon and
around the part of the said box, forming the ring, and through which passes the
shaft, is fixed or cast on a metal collar, the periphery of which is wedge shaped and
consequently the central line a circular edge. Around the collar is mounted upon
axes supported by two circles fastened on to the annular part a series of rollers,
the periphery of which forms a groove the shape of which corresponds to that of
the periphery of the collar upon which the said rollers rotate. The said rollers
during the operation rotate successively into a metal half crown in which they are
inserted, the inner periphery of which being wedge shaped and consequently the
central line being a semicircular edge like that of the collar fixed on the shaft and
which corresponds to the groove of the rollers. To this half crown, and to maintain
its equilibrium on the rollers and prevent it from following the rotatory motion of
the box, are suspended a counterpoise and the box containing the gearing and the
needle dials of an ordinary counter which register the number of revolutions of the
shaft. The rotatory motion of the latter is transmitted to the gearing of the counter
by a projection or cam fixed or cast on the ring of the box surrounding the shaft,
and which on each revolution of the latter acts on the free end of a lever acting on
a catch operating a ratchet wheel connected to the gearing of the counter.
Having thus briefly described the said Invention I will now proceed to describe
the same more particularly, reference being had to the accompanying Drawings in
which the same letters of reference indicate corresponding parts.
The new and improved registering apparatus consists, as above explained and
shown in the Drawings, of two parts, the one moveable and the other immoveable.
The moveable part is the outside casing or box fixed on the machine shaft; the
immoveable part is the counter properly so called.
The motion being transmitted to the moveable part by the shaft upon which it
is fastened, and the inner part on the counter, properly so called, being immoveable,
a registration may be obtained by means of the crown of rollers and of the ratchet,
such as has been hitherto effected by immoveable external parts fixed to the move-
able parts of the machines of which it was desired to ascertain the number of
revolutions, that is to say, that the box is simply fixed on the horizontal shaft
of any kind of machinery and every revolution of the said shaft will be infallibly
registered, the counter, properly so called, being immoveable in the inside of the
hermetically closed moveable box, which is consequently unexposed to all the
derangements resulting from the introduction of dust.

page_text: In order to apply the principle on which the Invention is based the apparatus is
constructed in the following manner-a is the cast-iron circular-shaped box, as
shown in the Drawings, which is fixed by means of bolts 6 to the horizontal shaft A
of the machine; c is the crown of rollers, eight in number, of the shape shown in
the Drawings, which rotate closely on a projection d on the cylindrical part of the
machine; e is the half crown in which rotate the four upper rollers, and to which
the cast-iron counterpoise f of the shape shown in the Drawings is suspended.
On the cylindrical part of the box a is keyed the cam g, over which passes at
every revolution of the shaft A, the lever which sets in motion the catch in the
counter properly so called, h, by means of which each revolution of the shaft A is
registered on the needle dials i, shown through an opening ; in the front plate of
the box, which may be closed at pleasure by a metal plate. The said counter made
of copper or other suitable metal is placed in the same direction as the counterpoise
and always remains in the same position as the latter, to the two ends of which
it is fixed by a same plate k which connects the counterpoise to the half crown in
which the rollers rotate.
The different parts above described work in combination together as follows:-
The box a is carried by the shaft A on which it is fixed whilst the rollers c rotate
underneath the half crown the position of which cannot change, the counter-
poise suspended to its ends preventing the same from following the rotary motion
and keeping it constantly in the upper part of the apparatus. Thus, as above
stated, the apparatus is formed by the combination of two parts, one moveable
and the other immoveable, the latter inside the apparatus, which allows of the
registering of the revolutions of the shaft on a series of dials. For this purpose a
tooth is fixed on the moveable part, that is to say, on the back plate of the box a,
which at every revolution of the shaft A carries one of the five teeth of a Malteso
cross m fixed to the counter, properly so called, h.
If the forward and backward revolutions are to be registered a cam or eccentric
by which the motion is transmitted to a ratchet connected to the unit dial is keyed
on the Maltese cross.
If the forward revolutions alone are to be registered the cam or eccentric is not
necessary, and the Maltese cross is simply keyed on the shaft.
The apparatus is hermetically closed by means of a circular metal plate and all
inconvenience that may arise from the introduction of any extraneous substance is
thus avoided.
From the above explanation it will be seen that the principle upon which the
said registering apparatus is based can only be applied to horizontal shafts, as the
immoveable part of the apparatus could not be suspended to a vertical shaft.
Having thus fully described the said Invention and the manner of carrying it
into effect, I would have it understood that I do not confine myself to the precise
details above enumerated, as these may obviously be modified without departing
from the principle of the Invention; but what I claim is, an improved apparatus
for ascertaining and registering the speed of machinery without external parts of
connection and in which the registering is obtained in a hermetically closed box
by the rotary motion of the shaft upon which the latter is fixed and by the part
of the counter, properly so called, which is kept immoveable by the effect of the
heaviness, substantially as above described and shown in the accompanying
Drawings.
In witness whereof, I, the said Henri Adrien Bonneville, have hereto set my
hand and seal, this Seventh day of December, in the year of our Lord One