IMPROVEMENTS IN THE MANUFAC- TURE OF DRIVING BANDS FOR MACHINERY
Year: 1876

page_text: LETTERS PATENT to Emile Renoult, of Maisons-Alfort, near Paris, in the
Republic of France, for the Invention of "IMPROVEMENTS IN THE MANUFAC-
TURE OF DRIVING BANDS FOR MACHINERY."
Sealed the 28th October 1876, and dated the 8th May 1876.
PROVISIONAL SPECIFICATION left by the said Emile Renoult at the Office
of the Commissioners of Patents on the 8th May 1876.
EMILE RENOULT, of Maisons-Alfort, near Paris, in the Republic of France. "Iм-
PROVEMENTS IN THE MANUFACTURE OF DRIVING BANDS FOR MACHINERY."
Experience proves that no matter how stout the leather employed for driving
bands of machinery these bands never fail to stretch, either by the action of the
work they are called upon to perform or by their compulsory use in damp places.
This lengthening of the belt inevitably occurs after a limited usage, invariably
entailing a shortening of the band, and consequently involving a more or less
onerous labour, while at the same time the strength of the leather is impaired.
The object of this Invention is to remedy these defects in a simple and thoroughly
efficient manner. With this view, therefore, I apply two thin flexible bands of
rolled steel to the belts, one on either side thereof externally, attaching them to
the leather belts by means of rivets or their equivalents lengthwise with the belt
and equidistant; by this means the belts are rendered proof against all strain or
the effects of damp.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Emile Renoult in the Great Seal Patent Office on the 2nd November
1876.
EMILE RENOULT, of Maisons-Alfort, near Paris, in the Republic of France. "LM-
PROVEMENTS IN THE MANUFACTURE OF DRIVING BANDS FOR MACHINERY."
It is acknowledged that the ordinary driving bands as at present in use are
subject to elongation consequent on the strain that they are subject to; this
stretching of the leather naturally tends to weaken it, and necessitates frequent
reparation, entailing a gradual shortening, and eventually renders the band unfit
for use; and, in addition, the compulsory use in some instances of bands in damp
[Price 4d.]

page_text: places has an equally injurious effect on them. This attenuation of the band is
inevitable after a sufficiently limited period of use, and invariably entails a certain
shortening and a more or less onerous task in restoring it, whilst at the same time
the strength of the leather is impaired.
The object of the present Invention is to remedy these defects by a simple and
practical method which effectually checks this elongation and preserves the strength
of the band for an indefinite period.
With the view of accomplish this object I apply or adapt to such bands two
thin strips or bands of thin rolled and flexible steel; these are placed or fixed by
screws, rivets, or some equivalent connection on either side of the band running
lengthwise, the rivets or other connections being arranged equidistant longitudinally
along the bands, which latter are made of a thickness in accordance with the use
to which the bands are to be put. By this means the driving belts are not only
secure against stretching, but are also preserved from the effects of damp.
In the accompanying Drawings Fig. 1 represents a plan, Fig. 2 a side view, and
Fig. 3 a side view, showing the two ends of the band united so as to form a circular
or oval band as required for use as a band for driving machinery. A is the leather
band, B the rolled steel bands, and C the rivets connecting the steel bands to the
leather.
Having thus described my Invention and the mode of carrying the same into
effect, what I claim and desire to secure by Letters Patent is, the application of thin
rolled steel bands (or strips of metal) to leather driving bands of machinery, in the
manner, by the means, and for the purposes precisely as herein set forth.
In witness whereof, I, the said Emile Renoult, have hereunto set my hand
and seal, this First day of November, in the year of our Lord One thousand
cjekt hundrod and soventy-six.
Witness,
E. HEBRE
EMILE RENOULT. (L.S.)