Improvements in and relating to Velocipedes.
Year: 1894

page_text: Date of Application, 30th Nov., 1894-Accepted, 5th Jan.,
1895
Improvements in and relating to Velocipedes.
1, WILLIAM THOMAS WILSON, of 3, Rue de Acacias, Paris, in the Republic of
France, Cycle Agent, 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 :—
This invention relates to an improved chain adjustment for velocipedes, and it
consists essentially of a screw mounted either below or above and preferably
slightly to the outside of each of the slotted ends of the back fork or frame, each
of the said screws being mounted so as to rotate freely in suitable snugs or bearings
formed on or fixed to the said slotted ends of the back fork or frame, and of nuts
threaded on the said screws and carrying washers adapted to be placed over the
ends of the axle of the driving wheel, and to be clamped to the slotted ends of
the back fork or frame by means of the usual fixing nuts after the adjustment has
been obtained, the object being to provide a simple and effective chain adjustment
which can be conveniently used with a gear case.
I attain this end in the manner shown by the accompanying drawing, in
which:-
-
Figure is a view in side elevation of one of the slotted ends of a back fork
or frame fitted with my invention.
Figure 2 is a view iu end elevation thereof.
Figure 3 is a view in side elevation of one of the slotted ends of a back fork or
frame showing another method of carrying my invention into effect, and
Figure 4. is a view in end elevation thereof.
Throughout the views similar parts are marked with like letters of reference.
Referring to the drawings, A. designates one of the slotted ends of a back fork
or frame for carrying the driving wheel of a rear-driving safety bicycle, it being
understood that both of the slotted ends of the said fork or frame are fitted up
in a similar manner.
B designates the free screw which is mounted in suitable
bearings a, a, formed on or fixed to the slotted end A of the back fork or frame,
the screw being free to rotate in the said bearings but having no longitudinal
movement therein. The screw is provided with a small square head 6 as shown,
or by any other suitable head whereby it can be conveniently rotated. C designates
the washer adapted to fit over the end of the axle X of the driving wheel and
having formed on or fixed to it a nut c threaded on to the screw B.
To adjust the driving chain, the nuts x, x, locking the axle X carrying the
driving wheel to the fork or frame having been slackened, the screws B, B, are
Jotated in the necessary direction to tighten or slacken the driving chain as may be
required, which causes the nuts c, c, forming part of the washers C, C, to travel
along the said screws and therefore travel along the slotted end A, A, of the fork
or frame thereby adjusting the driving chain as required. When the necessary
adjustment has been obtained the nuts, x, are screwed up to lock the axle X to
the fork or frame in the usual manner clamping the washers C, C, thereto at the
same time.
Instead of mounting the screw B slightly to the side of the slotted end A. of
the fork or frame as shown by Figure 2, it may if desired be mounted immediately
either below the said slotted end as shown by Figure 4 or above it, but I prefer
the former construction as shown by Figure 2 as it leaves more room for a
BOOK доса

page_text: In order that the screw B may be easily removable from the slotted end A of
the fork or frame the back snug or bearing a if it is fixed to the part A has a
slot a formed in it which fits in a recess in the screw as shown by Figures 1 and 2,
or as an alternative construction the back snug or bearing 'a may be made detach-
able from the part A. in some such manner as that shown by Figures 3 and 4 of
the accompanying drawing, or in any other convenient manner.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction herein before described and illustrated by the accompanying
drawing, but that I hold myself at liberty to make such changes and alterations
as fairly fall within the spirit and
scope of my invention.
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 ¨.
:
(1) The improvements in and relating to velocipedes, substantially as herein-
before described and illustrated by the accompanying drawing.
(2) In a device for adjusting the driving chains of velocipedes, the combination
of screws such as B mounted either above or below and preferably slightly to the
side of the slotted ends A of the fork or frame, and of nuts such as c threaded on
the screws B and having washers C formed on or fixed to them, the said washers
being adapted to fit over the ends of the axle of the driving wheel and to be
clamped to the slotted ends of the fork or frame by the nuts which fix the axle
thereto, as set forth.
(3) In a device for adjusting the driving chains of velocipedes, the combination
with the slotted ends A of the fork or frame, of the snugs or bearings a fixed
thereto, the back or rear one having a slot such as a', of the screws B mounted in
the said snugs or bearings and having heads such as b, and of the washers C
carried d by the nuts threaded on and actuated by the screws B, all combined,
arranged and adapted to operate, as and for the purpose set forth.
(4) In a device for adjusting the driving chains of velocipedes, the combination
with the slotted ends A of the fork or frame, of the snugs or bearings a the
forward one being fixed to the part A and the back or rear one being detachably
mounted thereon, of the screws B mounted in the said snugs or bearings and
having heads such as b, and of the washers C carried by the nuts c threaded on
and actuated by the screws B, all combined, arranged and adapted to operate, as
and for the purpose set forth.
Dated this 30th day of November 1894.
ROBERT E. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.