Improvements in Ball Bearings.
Year: 1889

page_text: Date of Application, 6th Nov., 1889
Complete Specification Left, 6th Aug., 1890-Accepted, 20th Sept., 1890
INU YIDIURAL BI TUITIVALIU.
Improvements in Ball Bearings.
I HERBERT JOHN HADDAN of the firm of Herbert & Co. Patent Agents of
18 Buckingham Street Strand W.C. in the County of Middlesex Civil Engineer do
hereby declare the nature of this invention a communication to me from abroad by
Maxime Mavet-Metcalf of Orleans in the Republic of France Engineer to be as
follows:-
:-
This invention relates to devices for regulating and covering the bearing and
consists of an endless screw working in two cheeks and gearing into a toothed
rotating lid combined with two cover plates that may be made to screw into and upon
the ring or seat holding the balls. By moving the endless screw the lid is actuated
and pressed on or lifted off the balls; the cover plates or one of them also assist in
pressing the balls and serve to keep the dust out of the bearing and allow of easy
access to the same.
Dated this 6th day of November 1889
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements in Ball Bearings.
I, HERBERT JOHN HADDAN, of the firm of Herbert & Co., Patent Agents, of
18, Buckingham Street, Strand, W.C. London, Civil Engineer, do hereby declare the
nature of this invention, a communication to me from abroad by Maxime Mavet-
Metcalf, Engineer, of Orleans, in the Republic of France, and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement:-
This invention relates to devices for regulating and covering the bearing and
consists of an endless screw working in two cheeks and gearing into a toothed
rotating lid combined with two cover plates that may be made to screw into and upon
the ring or seat holding the balls. By moving the endless screw the lid is actuated
and pressed on or lifted off the balls; the cover plates serve to keep the dust out of
the bearing and being removable allow of easy access to same.
In the accompanying drawing Fig. 1 is an elevation of the ball-bearing for
bicycles.
Fig. 2 is a side view with rotating lid and its endless screw. Figs. 3, 36,
4 and 4b show similar bearings.
A is the attachment plate or main body of the bearing. B is the endless screw to
rotate the lid B which is toothed on its periphery and gears into the endless screw.
C dust-plate or cover-plate which covers the interior ring of the bearing on each
side.
Without this arrangement, the bearing is exposed on each side of the cushion, the
dust enters the interior easily and wears out the balls and the bearing.
With the dust-plate, the ring is completely covered, the hole in the plate having the
same diameter as the shaft or axle.
This ball-bearing may be used with all kinds of shafting.
The regulating of the bearing is easy, without the assistance of a key, and without
unlocking anything; the cyclist or attendant can always regulate the cover by means
of a screw-driver placed upon the head of the endless screw to turn the same to the
right or to the left as required.

page_text: 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:-
A ball bearing having in combination with the main body of the bearing, the
rotary screw-threaded lid or cover, having on its periphery spur-teeth, and the endless
screw B gearing with said teeth and mounted in lugs on the body A for the purpose
set forth.
Dated this ath
C
1000
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for the Applicant.