Improved Anti-vibration Arrangement for Bicycles and other Velocipedes.
Year: 1891

page_text: Date of Application, 21st Oct., 1891
Complete Specification Left, 21st July, 1892-Accepted, 21st Oct.. 1892
PROVISIONAL SPECIFICATION.
Improved Anti-vibration Arrangement for Bicycles and other
Velocipedes.
MATTHEW MCMEEKIN of 196 Newtownards Road, Belfast, Engineer Fitter or
Engineer, do hereby declare the nature of this invention to be as follows:-
The anti-vibrator consists of a steel spiral spring enclosed by means of nuts top
and bottom, in a chamber of light steel tubing with projecting lug for attaching to
bottom of bicycle fork. Passing through nut on bottom of chamber there is a
steel spindle with eye on bottom end to connect to hub, centre top end is screwed
into spigot washer under spring in chamber, thereby securing it, and giving it a
bearing against bottom of spring, so that by being placed directly above centre of
wheel or hub all jolting or jar caused by obstruction of any kind will be overcome,
as spring must give to it, and thus the vibration will be prevented from reaching the
frame. Spring can be adjusted to suit any weight of rider by means of set screw
through nut on top of chamber. In continuing description of this invention, I may
state that there will be four of the aforesaid chambers attached to bicycle; one on
each side of hub on front wheel, and one on each side of hub on back wheel, these
can be fitted to any bicycle, by simply making lug of chamber to suit rake on fork,
or frame. They may add a little to the weight but not much as the saddle springs
can be dispensed with also. An ordinary or solid tyre can be used which will
tend to counterbalance weight of the device according to my invention. Whereas
in a new machine the weight will be less, as the frame can be made at least
three inches lower inasmuch as the chamber will stand that much above centre of
hub, and so raise the rider; so that by making the frame of the machine lower;
and dispensing with saddle springs, I claim that by my invention the weight will
be less.
Dated hot 1
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.
COMPLETE SPECIFICATION.
Improved Anti-vibration Arrangement for Bicycles and other
Velocipedes.
I, MATTHEW MCMEEKIN of1 96 Newtownards Road, Belfast Engine Fitter and
Engineer, 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 :-
•
My invention relates to an improved anti-vibration arrangement for bicycles and
other velocipedes. Said invention consists of a steel spiral spring enclosed by means
of nuts top and bottom, either screwed inside or outside a chamber made up or con-
sisting of light steel or any other suitable metal, with projecting lug for attaching
same to bottom of bicycle fork.
In accordance with my invention I also employ a steel spindle having an eye on
bottom end to connect same to hub; the said spindle passes right through the
chamber; or, only through bottom nut on same, when the centre top end is screwed
into a spigot washer under spring in chamber, thereby securing it, and giving it
bearing against the bottom of spring, so that by being placed over centre of wheel
[Price 8d.1

page_text: :
or hub, all jolting or jar caused by obstruction of any kind will be overcome, as
spring must give to it, and thus the vibration will be prevented from reaching the
frame.
The spring can be adjusted to suit any weight of rider by means of a set screw
or dome nut passing through nut on top of chamber.
In continuing description of this invention, I may state that there will be four of
the aforesaid chambers attached to bicycle; one on each side of hub on front wheel,
and one on each side of hub on back wheel; these can be fitted to any bicycle, by
simply making lug of chamber to suit rake on fork, or frame. They may add a
little to the weight, but not much, as the saddle springs can be dispensed with also.
An ordinary or solid tyre can be used; which will tend to counter balance
weight of the device according to my invention. Whereas in a new machine 'the
weight will be less, as the frame can be made at least 3 inches lower inasmuch as
the chamber will stand that much above centre of hub, and so raise the rider, so
that by making the frame of the machine lower; and, dispensing with saddle
springs, I claim that by my invention the weight will be less.
I may employ in connection with my invention, a movable stay one end of which
is connected to bottom of the spindle aforesaid, whilst the other end is connected
to the spindle of the chain wheel, and so prevents all drag of chain and spindle
bending.
In the accompanying drawings,
Figure 1 is a side view of my improved anti-vibration device, and Figure 2 a
longitudinal central section of the same.
Figure 1 is an end view.
Figure 3 shows the device applied to one of the forks of a bicycle wheel.
Like letters of reference indicate corresponding parts throughout the figures.
My invention consists of a casing e of phosphor bronze or other suitable material,
enclosing a spiral spring d, upon the two ends of which bears a spigot washer c
and respectively, serving to contract the spring d.
The casing e is tapped at each end to receive the screw caps or nuts 6 and g.
The spigot washer c is fixed upon a steel s indle a which passes through the screw
cap, and terminates outwardly with a circular flattened end having a central per-
foration o, through which passes the axle A, of the wheel W, secured thereto by a
nut. The spigot washer is held in position (Figure 2) by the screw cap g, pro-
vided with a central tapped perforation through which passes the screw bolt j,
furnished with a locking nut i, and bearing upon the said spigot washer f. This
screw bolt serves to regulate the expansion or contraction of the spring d.
The casing e is provided with two (Figure 1) or four (Figure 2) centrally per-
forated Ings whereby the device can be fixed to each branch FF of the front
and rear forks of a velocipede as clearly shown in Figure 3, each end of the axle
of which device, passes as above stated, through the perforation formed in the
flat annular end of the spindle a. The two axles are thus carried by four similar
devices suspended to the two forks 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 improved means for overcoming vibration in velocipedes and the like sub-
stantially as herein described and set forth.
Dated this 21st day of July 1892.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.