Improved Anti-frictional Toothed Gearing.
Year: 1889

page_text: Date of Application, 31st Oct., 1889
Complete Specification Left, 12th July, 1890-Accepted, 16th Aug., 1890
PROVISIONAL SPECIFICATION.
Improved Anti-frictional Toothed Gearing.
I, LOUIS AUGUSTE EMMANUEL HEBERT, of 136, Rue Saint-Maur, Paris, France,
Portfolio Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This Invention has for its object to avoid or diminish the rubbing friction at the
point of contact of the teeth of spur gear and it consists in mounting antifriction
rollers in the teeth of the wheels in such way that the rollers only of the one wheel
come into frictional contact with those of the other wheel.
In the accompanying drawing forming part of this specification, figure 1 is a face
view of part of a pair of antifrictional gear wheels, and figure 2 is a cross-section in
the plane of the wheel axes.
In order to better explain the invention I have represented, in broken lines, the
ordinary form of tooth a and, in full lines, the antifriction rollers & which I substitute
therefor.
These rollers 6 turn freely on their axes c, which are mounted in pairs of cheeks d
clamped to either side of a hub e.
The rollers & may be single or may each be composed of a number of loose rollers
side by side, according to the dimensions of the wheel.
With this construction, the loss of power by friction will be in great part avoided as
the contact between two teeth becomes that of two wheels free on their axes and the
direction of strain transmitted from the driving wheel is constantly perpendicular to
the common direction of said axes.
It will also be evident that this mode of construction is cheap and rapid and
enables repairs to be easily executed.
Dated this 31st day of October 1889
L. A. E. HEBERT.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improved Anti-frictional Toothed Gearing.
I, LOUIS AUGUSTE EMMANUEL HÉBERT of 136, Rue Saint-Maur Paris, France,
Portfolio Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
"
This Invention has for its object to avoid or diminish the rubbing friction at the
point of contact of the teeth of spur wheels in gear; and it consists in mounting anti-
friction rollers in the teeth of the wheels in such way that of two wheels in gear with
each other only the rollers of the one wheel come into frictional contact with those of
the other wheel.
In the drawing accompanying the Provisional Specification, figure 1 is a face view
of part of a pair of gear wheels with antifrictional roller teeth, and figure 2 is a cross-
section in the plane of the wheel axes.
In order to better explain the invention I have represented, in broken lines, tho
ordinary form of tooth a and, in full lines, the antifriction rollers b which I substitute
therefor. These rollers b turn freely on their axes c which are mounted in pairs of
cheeks d clamped to either side of a hub e. The rollers may be single or may
each be composed of a number of loose rollers side by side, according to the
dimensions of the wheel.

page_text: By this improvement, the loss of power by friction will be in great part avoided as
the contact of a tooth of one wheel with a tooth of the other wheel becomes that of
two rollers free on their axes and the direction of strain transmitted from the driving
wheel is constantly perpendicular to the common direction of said axes.
also be evident that this mode of construction is cheap and enables repairs to be
easily and quickly executed.
It will
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, with a spur wheel, of antifriction rollers loose on axes mounted
in its teeth so that the said rollers serve as the medium for the transmission of force
from the driving to the driven wheel, substantially as specified.
2. The herein described construction of spur wheel consisting of a pair of toothed discs
with a hub between and with anti-friction rollers loose on axes mounted in the teeth
of the discs so that said rollers act as the medium for the transmission of force from
the driving to the driven wheel, substantially as described and illustrated in the
drawings.
Dated this 15th TL1000
L. A. EMMANUEL HÉBERT.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.
L. A. EMMANUEL HÉBERT.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.