Improvements in Anti-vibration Devices for Cycles and other similar Vehicles.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Anti-vibration Devices for Cycles and other similar
Vehicles.
FRANCIS BEAUCHAMP, FRANK BEAUCHAMP, and WALTER EDGAR BEAUCHAMP, of
Sunny Side, The Green, South Tottenham, in the County of Middlesex, Engineers,
we do hereby declare the nature of this invention to be as follows:-
Improvements in anti-vibration devices for cycles and other similar vehicles.
For this purpose we provide means for reducing the vibration in cycles by plac-
ing in the down tube of the L pin a piece of rubber or any other suitable
material or substance to take, the weight of the rider. The said down tube fits
into an outer tube the said outer tube fits inside the diagonal tube of a cycle.
The said tube is held fast by the scat lug and can be adjusted in the usual way.
The lower end of the said, tube that fits into the diagonal tube is provided with
a long shaped cotter the said cotter passes through a long slot cut in the L pin
tube and through the piece of tube surrounding the pin. After the cotter pin
passes through the two tubes it is held fast in the outer tube surrounding the
L pin. The said L pin tube that is provided with a long slot
works freely inside the tube and slides on the cotter pin which
prevents the L pin turning round. Inside the said L pin tube we
provide a round plate one side of which bears against a rubber or spring
the lower side of the said plate fits into a recess cut in the cotter pin this prevents
the. cotter pin coming out as well as secluding the rubber or spring or any other
flexible substance being seen.. On the top end of the said L pin we provide a.
nut and screw to work, therein for adjustment. The inside end of the screw
bears against a plate the said plate lies on the top of the rubber or spring. The
said pin is so arranged that it can be adjusted to any angle. This arrange-
ment can be applied to handlebars and fit into the steering post of any cycle.
Dated this 3rd day of May 1899.
30 Improvements in Anti-vibration Devices for Cycles and other similar
Vehicles.
We, FRANCIS BEAUCHAMP, FRANK BEAUCHAMP, and WALTER EDGAR BEAU--
CHAMP, all of Sunny Side, The Green, South Tottenham, in the County of Mid-
dlesex, Engineers, do hereby declare the nature of this invention, and in what

page_text: manner the same is to be performed, to be particularly described and ascertained.
in and by the following statement::--
This invention relates to anti-vibration devices more especially applicable to
the saddle-pins and handle-bars of cycles and other like vehicles.
In the accompanying drawings Figure 1 is a sectional elevation of the saddle-
pin of a cycle with our invention applied thereto. Figure 2 is an elevation of
our improved saddle-pin in place in the diagonal or down tube of a bicycle, for
example. Figure 3 is a transverse section of a handle-bar with our invention
applied thereto, and Figure 4 illustrates a modification of our invention.
Similar letters relate to like parts in all of the figures of the drawings.
is the part of the L-pin which is intended to receive the saddle, b is the down
tube of the cycle, is the saddle pillar lug, the upper main tube, and the
back stay is the part of the L-pin which is usually clamped into the upper
end of the diagonal or down-tube 6 of the cycle but instead of being so fixed
it is free to move to a limited extent in an intermediate tube g which is clamped
into the upper end of the diagonal or down tube as shewn in Figure 2 in which
tube it may be adjusted to suit the height of the rider. Two slots h are formed
liametrically opposite to one another in the tube f and shorter slots are similarly
formed in the intermediate tube g. Fitting into the last-named slots and pass-
ing through the longer slots h in the tube f is a gib or key i preferably of flat
or oblong transverse section and having a recess on its upper edge as shewn in
Figure 1. In this recess rests the lower end of a thimble or ferrule which
receives the lower end of a spring of indiarubber or other suitable resilient
material or combination of materials, and at the same time prevents the with-
drawal of the said gib or key from the slots in the intermediate tube g.
spring extends upwards as shewn and is adapted to be more or less compressed
by the action of the regulating-screw 7, the lower end of which bears upon the
washer m, and passes through the screw-threaded portion of the upper part
of the L-pin as shewn. It will be seen that the initial state of compression of
the spring may thus be regulated by means of the screw 7 according to the
weight of the rider, the state of the roads, and other circumstances. But in
some cases the adjustment screw 7 may be dispensed with, and the initial com-
pression of the spring be relied upon.
This
It will also be understood that the normal position of the parts are as seen in
Figure 1, but that when the rider mounts the saddle his weight will tend to
force the part f of the L-pin downwards until the upper edges of the slots h
therein come against the upper edge of the gib or key i. This tendency is how-
ever resisted by the resiliency of the spring which tends to keep the lower
edges of the slots in the part f of the L-pin against the lower edge of the gib
or key, that is to say in the position shewn in Figure 1; and vibration or shock
is thereby more or less absorbed. The gib or key i also serves to prevent the
L-pin from turning round but in some cases we employ a pin o fixed by a band
or bracket p or in any other convenient manner to the intermediate tube 9 and
extending upwards and engaging with a fork or other similar device on the
part a of the L-pin, as shewn in Figure 1. The upper end of the tube is pre-
ferably beaded as shewn at r and cotton, asbestos, or other suitable packing is
forced into the hollow thereof so as to prevent dust and other matter from
entering the space between the tubes f and g. The packing also serves to
retain oil or other lubricant for the moving parts, any surplus oil flowing down
into the lower part of the diagonal or down tube without coming into contact
with the indiarubber spring which is further protected from oil and grit by the
thimble or ferrule j.
In Figure 3 which illustrates the application of our invention to the handle-
bar of a cycle, for example, is the intermediate tube intended to be clamped
into the steering spindle or post of the cycle, f is the handle-bar stem which
carries, by means of the forward lugs, the handle-bar t; k is the spring, 7 the
regulating screw, m the washer, n the cap through a screw-threaded hole in

page_text: which the regulating screw 7 passes, and o is the pin for assisting in preventing
the tube f from turning in the tube g. This pin o is shewn screwed into the
forward lugs and handle-bar t, and engaging with a fork g or other similar
device on the intermediate tube g. The action of this anti-vibration device on
the handle-bar of the cycle is in all respects similar to that herein before des.
cribed in relation to the L-pin of the saddle.
We prefer to employ for the springs a thick tube of indiarubber as shewn,
but if desired, helical wire springs may be employed, or in some cases a helical
wire spring may be embedded or moulded. within an. indiarubber spring as illus-
trated for example in Figure 4.
Having now particularly described and ascertained the nature of the said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:-
First. An anti-vibration device for the L-pin of a cycle or other similar vehicle
in which a spring is interposed between the said L-pin and the diagonal or down
tube, substantially as described with reference to Figures 1 and 2 of the
drawings.
Second. An anti-vibration device for the handle-bar of a cycle or other similar
vehicle in which a spring is interposed between the said handle-bar and the
steering pillar, substantially as described with reference to Figure 3 of the
drawings.
Third. In anti-vibration devices for cycles and other vehicles the combination
of a tube f having slots h, an intermediate slotted tube g, a gib or key i, with a
spring, regulating screw 7, with or without the supplementary steadying
device o, p, q, arranged and operating substantially as described with reference
to the drawings.
Fourth. In anti-vibration devices for cycles and other vehicles the combina-
tion of a tube f having slots h, an intermediate slotted tube g, a gib or key i,
with a spring, with or without the supplementary steadying device o, p, q,
arranged and operating substantially as described with reference to the drawings.
Fifth. In anti-vibration devices for cycles and other vehicles the means for
retaining the gib or key in place by the recess on its upper edge in which fits
the lower part of the thimble or ferrule ; substantially as described with refer-
ence to the drawings.
Sixth. The anti-vibration devices for cycles and other similar vehicles, com.
bined, arranged and operating substantially as described.
Dotad this 2nd day of February 1900.
FRANCIS BEAUCHAMP,
FRANK BEAUCHAMP,
W. E. BEAUCHAMP.
Per W. H. Beck,
Agent, 115, Cannon Street, London, E.C.