Improvements in and relating to Bearings for Cycles and the like.
Year: 1898

page_text: Date of Application, 15th Apr., 1898
PROVISIONAL SPECIFICATION.
Improvements in and relating to Bearings for Cycles and the like.
I. GEORGE JOHN PARKER, of 16, The Crescent, Lower Edmonton, in the County
of Middlesex, Engineer, Turner and Fitter, do hereby declare the nature of this
invention to be as follows:-
--
This invention relates to certain improvements in and relating to bearings for
cycles and the like the object being to provide a cup and lock-nut combined for
disc-holes of bearings of wheels for cycles and the like. In carrying the inven-
tion into practice the hub bearing and the cup are turned-up with two corre-
sponding screw threads but one of the screw threads is coarser than the other and
the cup-nut is likewise fitted with corresponding screw threads. When the nut
is in position the cup is screwed into the hub which is the finer thread and the
nut is then turned round, by spanner or wrench, and the screw threads of the
nut-cup and bearing being of different pitch the cup and bearing will be drawn
together and the cup itself become securely locked. This lock-nut, cup and
bearing fitting is also applicable to bearings such as bottom brackets and the like.
Dated this 15th day of April 1898.
A. C. ELI,
For the Applicant.
Improvements in and relating to Bearings for Cycles and the like.
I. GEORGE JOHN PARKER, of 16, The Crescent, Lower Edmonton, in the County
of Middlesex, Engineer, 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 relates to improvements in bearings for cycles and like machines,
and it has for its object to provide a ready and effective means for securing the
adjustable portions of such bearings.
In carrying the invention into effect in the case of a bottom bracket of a cycle
I form upon the exterior of the barrel portion a screw thread of comparatively
coarse pitch with which engages a thread of corresponding pitch formed upon the
interior of the cap. A second thread is also cut upon the interior of the cap
which is of a finer pitch and engages with a corresponding thread formed upon
the outside of the cup which is also screwed into the interior of the barrel.
In order that the invention may be the better understood drawings are appended
in which:-

page_text: Figs. 2 and 3 are detached views of parts of the above illustrating an alterna-
tive form of the invention.
Fig. 4, is a partly sectional elevation of the steering head of a cycle to which
the invention is applied.
Referring to Fig. 1, A, is the bottom bracket provided with an internal fine
pitched thread B, and upon the outside with a coarse thread C. D, is the cup
provided with an external thread E, of the same pitch as and engaging with the
thread B. E, is the cap which as shown in Fig. 1, is provided with the internal
threads engaging with and of the same pitch as the threads B and C.
It will be seen from the foregoing that when it is desired to place the cup D,
in position it is first inserted in the barrel and screwed home, the cap E is then
screwed on, the differences of pitch in the two screws thereon allowing it to. be
rotated until the difference between the said pitches prevent any further move-
ment when the cup is tightened by means of a spanner or suitable wrench and
the locking is effected. I may in some cases use a right and a left hand thread
when, as indicated in Figs. 2 and 3 the right hand and finer pitched thread F
would be upon the cup D, the interior of the barrel of the bracket A, having a
similar thread and also the reduced portion of the cap E, the left hand and coarser
thread G, being upon the outside of the barrel A. In this case the cap E would
first be placed upon the bracket, the cup next being screwed into position and
finally a slight rotation of the cap E would securely lock the whole together. It
will be obvious from the foregoing that I may use left hand threads for both
parts of the bearing and also that the invention may be applied to other parts of
cycles or the like. as illustrated in Fig. 4, where a section is shown of a handle
bar adjustment, H, being the nut or cap. I the central tube and J, the cup.
Although I have shown and described the invention as applied to cycles it will
be readily understood that such a locking device may be used for a variety of
purposes or machines in which such a device would be of service.
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:-
In a bearing for cycles and the like a locking device consisting of a cap or
nut provided internally with differentially pitched screw threads adapted to
engage with corresponding threads formed respectively upon the cup and the
exterior of the barrel of the bracket or other part of the machine, substantially as
herein described and illustrated by the appended drawings.
Dated this 15th day of
1000
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.