Improvements in Bearings for Axles and Shafts, and in Means for Lubricating the same.
Year: 1890

page_text: Date of Application, 21st June, 1890
Complete Specification Left, 30th Aug., 1890-Accepted, 4th Oct., 1890'
PROVISIONAL SPECIFICATION.
Improvements in Bearings for Axles and Shafts, and in Means for
Lubricating the same.
We DAVID BRUCE CRAIG and OSTWALD CRAIG both of Waverley View Miller
Hill Dalkeith Iron Founders do hereby declare the nature of this invention to be us
follows:
The object of our invention is to form a wheel bearing that shall be almost friction-.
less in its various working parts and at the same time self lubricating. For this.
purpose we construct a box to contain our bearing of suitable dimensions to admit of
two or more small bearing wheels being mounted within on axles, in such a position
or positions, that they shall revolve close to, but without actually touching each other.
The lower surface of the circumference of these wheels dips into a cup or cups
containing oil or other lubricant, placed in the lower part of the bearing box.
axle or spindle of the machine revolves upon the upper surfaces of these bearing
wheels.
The
By the use of our bearings much friction is avoided, and at the same time, the
wheels by dipping into the lubricant at their lower surfaces, keep all the working
parts automatically lubricated.
D
CT1000
GRAHAM & GRAHAM,
Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Bearings for Axles and Shafts, and in Means for
Lubricating the same.
We, DAVID BRUCE CRAIG, and OSTWALD CRAIG both of Waverley View Miller
Hill Dalkeith 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 :-
The object and purpose of this our invention is to form a wheel bearing, that shall
be almost frictionless in its various working parts and at the same time self-lubricating.
For this purpose we construct a box to contain our bearing of suitable dimensions to
admit of two or more small bearing wheels being mounted within on axles in such a
position or positions that they shall revolve close to, but without actually touching,
each other. The lower or under surface of the circumference of these bearing wheels,
dips into a cup or cups, containing oil or any lubricant, placed in the lower part of the
bearing box.
The axle or shaft of the machine revolves upon the upper surfaces of these bearing
wheels. By this means, much friction is avoided, and at the same time, the wheels,
by dipping their lower surfaces into the lubricant, keep all the working parts auto-
matically lubricated.
In order that my invention may be the more readily understood, I have hereunto
annexed a sheet of drawings on which letters of reference are marked on all the
corresponding parts on both the figures alike.

page_text: Fig. 2. shews a side elevational view of my invention, with the various parts in
Having the side of the case entirely removed.
position.
a. is the bearing box.
b, b. are the bearing wheels.
c. is the axle or shaft of the bearing wheels.
d. is the cup or cups containing oil or other lubricant.
e. is the axle or shaft of the machine.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed. I declare that what I
claim is
The method of lubricating shafts or axles of machines, by the use of two or more
revolving wheels, forming a hearing for same, as herein substantially set forth
illustrated and described.
Dated this 20th dove
A 1900
GRAHAM & GRAHAM,
Agents for Applicants.