An Improvement in Bicycles to Prevent Vibration, and also a Rim Brake.
Year: 1899

page_text: Date of Application, 5th Apr., 1899
Complete Specification Left, 5th Jan., 1900-Accepted, 24th Mar., 1900
PROVISIONAL SPECIFICATION.
An Improvement in Bicycles to Prevent Vibration, and also a Rim
Brake.
I, RICHARD MANSELL JONES, of Sunnyside Lodge Road, Croydon, Surrey,
Surgeon, do hereby declare the nature of this invention to be as follows:-
6i
In a Patent No. 28,892 A.D. 1897 granted to me and described as an improve-
ment in bicycles to prevent vibration," this invention practically consists of an
improvement in a portion of the above spring frame, & also in a rim brake to
control the above machine..
The frame is made exactly the same as that described in the above Patent
excepting that the levers or their substitutes the steel spring rods are dispensed
with and the top bar at the end connected with the seat post is made to telescope
into a short tube brazed into the lug in front of the seat post. This short tube
is about six inches long and made slightly larger in diameter than the top bar so
as to allow it to telescope into it & compress a spiral steel compression spring con-
tained therein & thereby absorb vibration. A slot about one inch & a quarter long
& a quarter of an inch wide is cut on both sides of the short tube about its
centre. The top bar which glides into this portion of the short tube is pierced
by a hole through each side at the forward end of the slot & also two similar holes
at the rear end of the slot; a bolt is passed through the forward holes & secured
on each side by a clip & a nut. This bolt prevents the top bar from slipping out
of the short tube & the clips regulate the movement of the spring by tightening
or loosening the nuts. To make the frame rigid the bolt is transferred to the
holes in the rear end of the slot thus preventing the top bar from telescoping
any further.
To make the frame still more rigid a clip can be fixed on the
forward end of the short tube & screwed up tightly by a nut & bolt if considered
necessary. Precisely the same arrangement as above described is carried out in
connection with the back stays which are made to telescope into two short tubes
attached to the lug at the back of the seat post. If considered preferable
the stays can be joined together by a bridge about a couple of inches above
the wheel & from the centre of this bridge a single tube is carried up & made
to telescope into a short single tube attached to the lug at the top of the seat
post. If rubber buffers are preferred to steel springs they can be placed outside
the tubes & fixed between buffer plates attached to the tubes respectively. One
rubber buffer can be made to suffice for the back stays by placing it between
them & between plates fixed to the short tubes & stays respectively.
The brake best suited to control
-
the above spring frame bicycle
is made as follows. A pivot is clamped to the undersurface of
each hind fork just opposite the wheel rim & રી lever brake
of semicircular shape is hinged on each pivot near its centre, the
short arms which curl on the rim carry a leather shoe. The long arms curl in
front of the tyre (& if considered necessary can be made to cross each other thus
affording greater leverage) and a fine wire, or strand of fine wire is fastened to
each end & then joined into one a few inches in front, this single wire is
now passed under the crank bracket & along the side of the lower tube up
to its junction with the steering socket, here it passes through a small piece of

page_text: narrow tubing about three inches long & brazed in the form of an elbow to the
lower bar & steering socket, from this point it is carried up to the handle bar
at its junction with its perpendicular tube where it is carried through a
similar piece of fine tubing brazed elbow shaped to this angle & continued on to
the handle where it is fastened to a suitable lever.
This brake can be adapted to any cycle & can either be fixed to the front forks
back forks or stays.
An Improvement in Bicycles to Prevent Vibration, and also a Rim
Brake.
I, RICHARD MANSELL-JONES, of Sunnyside Lodge Road, Croydon, in the County
of Surrey, Surgeon, 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 for an improvement in bicycles to prevent vibration and
also a rim brake relates to spring frame bicycles of that class described in
my prior Patent No. 28892 of 1897 and to a brake connection and has for its
object to improve the arrangement of springs described in the aforesaid Patent
and to effectually guide a continuous flexible brake connection. The improvement
consists in replacing the springs therein described by a spring or springs
arranged within the tubing of the frame. The flexible brake connection is
guided by bent tubes fixed to the frame at the desired places.
In the accompanying two sheets of illustrative drawings Fig. 1 is an elevation
of a bicycle constructed according to this invention shewing two separate springs
replacing the two springs described in my prior Patent and Fig. 2 is a detail.view
of the same. Fig. 3 is a back elevation of Fig. 2.
Figs. 4 and 5 are similar views to Figs. 1 and 2 shewing a single spring replac-
ing the two springs, and Fig. 6 is a plan of Fig. 5.
The frame of the bicycle is similar in shape to that of the ordinary diamond rigid
.frame. The front end of the top bar d is connected by a ball bearing joint y
with the top of the steering socket e in the usual position. The lower end of the
diagonal tube a and also the rear end of the lower bar fare connected to the crank
bracket by ball bearing joints y, the front end of the lower bar f being brazed
to the lower end of the steering socket e in the usual manner. The lower ends
of the back fork stays are pivoted to the hind forks in the usual position
by hinge joints and the hind forks o are brazed to the bottom bracket in
the usual manner. The above construction is all exactly as described in my afore-
said prior patent..
Referring to Figs. 1, 2 and 3 according to this invention, the top of the diagonal
tube or seat post a has a double bracket bb. Pivoted to the forward part b
of the bracket is the rear end of a short cylinder or tube r. The rear end of
the pivoted top bar & fits and slides in the open front end of the cylinder and
a helical spring is interposed between the bottom of the cylinder and the end
of the bar d. A pin or bolt fixed in the cylinder r works in a slot in the bar d
and limits the motion of the bar in the cylinder. If a pin similar to the pin h
is fixed in the position this part of the frame is made rigid.
In an exactly similar manner the arms b pivotted to the bracket b¹ slide and
work in cylinders or tubes r secured to the upper ends of the back stays n. It
will be evident that if desired the two stays can be connected together and

page_text: only one spring telescopic joint be used.
that passes through the rear bracket
tube a, the arms bearing on the part
that the nut can be tightened without tightening the pivot action.
As shown the arms b³ pivot on the bolt 62
and serves to secure the saddle pin in the
of the bolt and the part 6 of the nut so
In the modification shewn in Figs. 4, 5, and 6 the arrangement is similar to that
shewn in Figs. 1 and 2, except that a single forward bracket b and one spring i
only is employed. The saddle pillar bolt 62 in this case passes through the
forward bracket b. The back fork stays are pivoted to a pin mounted in a
plunger s sliding in the cylinder r and bearing against the inner end of the
spring. The pin carries a roller runs on the top of the inside of the
cylinder r.
that
My improvements in or connected with brakes relates more especially to
brakes that are operated from a lever directly connected by a flexible but
inextensible connection to the brake shoe. According to this invention, the
flexible connection whenever it is desired to change its direction is passed through
a short-length of curved tube A brazed or otherwise fixed to the frame.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. A bicycle frame consisting of the hinged members and the telescopic spring
joint.
2. A bicycle frame consisting of a bottom, bracket, the lower bar and diagonal
tube hinged to the bottom bracket, the steering socket rigidly secured to the
lower bar, the top bar hinged to the steering socket, a cylinder hinged to the
top of a diagonal tube, and receiving the free end of the horizontal bar, and
a, helical spring within the cylinder.
3. A bicycle frame consisting of a bottom bracket, the lower bar and diagonal tube
hinged to the bottom bracket, the steering socket rigidly secured to the lower
bar, the top bar hinged to the steering socket, a cylinder hinged to the top
of the diagonal tube, and receiving the free end of the horizontal bar, a helical
spring within the cylinder, the back forks rigidly secured to the bottom bracket,
the back fork stays pivoted to the back forks, a cylinder or cylinders hinged to the
diagonal tube and receiving the free end or ends of the stays and a spring or
springs in the cylinder or cylinders.
4. A bicycle frame consisting of a bottom bracket, the lower bar and diagonal
tube hinged to the bottom bracket, the steering socket rigidly secured to the
lower bar, the top bar hinged to the steering socket, a cylinder hinged to the
top of the diagonal tube, and receiving the free end of the horizontal bar, a helical
spring within the cylinder, the back forks rigidly secured to the bottom bracket,
and the back fork stays pivoted to the back forks and fixed to a plunger sliding
in the cylinder and bearing against the spring.
5. The improved jointed spring frame substantially as described with reference
to Figs. 1 and 2.
6. The improved jointed spring frame substantially as described with reference
to Figs. 3 and 4.
7. The improved means for guiding flexible connections for brakes and the
like at their changes of direction consisting in passing the connection at the
said changes through short lengths of curved tube fixed to the frame.
Dated this 4th day of January 1900..
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.