Improvements in or connected with Anti-vibration Devices for Velocipedes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Anti-vibration Devices for
Velocipedes.
I, GRIFFITH JONES, of Brynglas, Nevin, North Wales, Gentleman, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in or connected with velocipedes, and
refers more particularly to certain constructional details of the frame, the object
being to arrange the latter in such a manner that by the insertion of a spring
box between the divided portions of the said frame, as hereinafter set forth, all
vibration due to the inequalities of the road, is intercepted or absorbed, and by
this arrangement I am enabled to dispense with a pneumatic tyre while retaining
all the advantages derived from its use as regards resiliency and speed without
fear of the liability to puncture and the attending disadvantages.
In carrying my invention into practical effect, the frame of the velocipede is
formed in two parts suitably hinged or pivoted together at the bottom bracket,
and divided or separated at the upper part, and between these two hinged frames
and at the said upper part thereof I insert a spring box consisting of a double
set of suitably shaped laminated spring plates, the upper and lower extremities of
which are hinged or pivoted together, while this said spring box is further
reinforced by a sufficient number of suitable helical springs conveniently arranged
within same, and the whole is secured in position by being bolted or otherwise
fixed preferably to forked arms projecting from the apex of each of the aforesaid
frames, and in such a manner that the parts can turn or move.
Instead of using helical springs to reinforce the aforesaid spring box. I mav,
if advisable, employ a pneumatic cushion fitted with a suitable inflating valve for
this purpose.
In this case the pneumatic cushion would be conveniently shaped to fit between
the laminated spring plates forming the aforesaid spring box, while it is preferably
constructed with dividing partitions or webs to prevent any latitudinal expansion
of same when inflated.
Although this invention is principally designed to allow of pneumatic tyres to
be dispensed with, it may, if required, be employed in connection with them
in order to afford additional resiliency.
As my improvements are capable of some modifications, without departing from
the principle thereof, I do not restrict myself to materials, dimensions, or to the
precise form or placement of the several parts thereof.
1
"
1900

page_text: Improvements in or connected with Anti-vibration Devices for
Velocipedes.
I, GRIFFITH JONES, of Brynglas, Nevin, North Wales, Gentleman, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to improvements in or connected with velocipedes, and
refers more particularly to certain constructional details of the frame, the object
being to arrange the latter in such a manner that by the insertion of a spring
box between the divided portions of the said frame, as hereinafter set forth, all
vibration due to the inequalities of the road, is intercepted or absorbed, and by
this arrangement I am enabled to dispense with a pneumatic tyre while retaining
all the advantages derived from its use as regards resiliency and speed without
fear of the liability to puncture and the attending disadvantages.
In carrying my invention into practical effect, the frame of the velocipede is
formed in two parts suitably hinged or pivoted together at the bottom bracket,
and divided or separated at the upper part, and between these two hinged frames
and at the said upper part thereof I insert a spring box consisting of a double
set of suitably shaped laminated spring plates, the upper and lower extremities of
which are hinged or pivoted together, while this said spring box is further
reinforced by a sufficient number of suitable helical springs conveniently arranged
within same, and the whole is secured in position by being bolted or otherwise
fixed preferably to forked arms projecting from the apex of each of the aforesaid
frames, and in such a manner that the parts can turn or move.
Instead of using helical springs to reinforce the aforesaid spring box, I may,
if advisable, employ a pneumatic cushion fitted with a suitable inflating valve for
this purpose.
In this case the pneumatic cushion would be conveniently shaped to fit between
the laminated spring plates forming the aforesaid spring box, while it is preferably
constructed with dividing partitions or webs to prevent any latitudinal expansion
of same when inflated.
Although this invention is principally designed to allow of pneumatic tyres to
be dispensed with it may if required, be employed in connection with them
in order to afford additional resiliency.
In order that my invention may be more fully understood, I will now proceed
to describe same with reference to the accompanying drawing in which,
Fig. 1 is a side elevation of a frame constructed according to this invention.
Fig. 2 is a side view of the bottom bracket drawn to an enlarged scale as
compared with Fig. 1.
Fig. 3 is a view at right angles to Fig. 2.
Fig. 4 is a section through line (Fig. 2) showing the lubricator for
bearings.
Fig. 5 is a section through bracket bearing, and
Fig. 6 is a plan of same showing the lower tubes and mud-guard supported in
position.
Fig. 7 shows the three corners of rear part of frame.
Fig. 8 illustrates a chain adjuster of usual and well known form for use in
connection with the frame, and to which I lay no claim.
Fig. 9 is a view looking at right angles to Fig. 7 showing the upper extremities
of the parts forming the back frame, the distance apart at which they are placed
and the bolt which passes through same.

page_text: Fig. 10 shows a front and side elevation of the metal plate bolted between the
upper extremities of the side arms Fig. 9 and to which the spring box is bolted at
one side.
Fig. 11 is a side elevation of the upper parts of the front and back frame of
the velocipede showing the spring box interposed.
Fig. 12 is a plan of a portion of one of the springs forming the spring box
showing position of holes for bolts, and
Fig. 13 shows one of the hinges for the ends of the flat springs forming the
spring box and also shows the bolt passing through the centre of the hinge and
upon which it turns.
Fig. 14 is a back view of the bracket at top corner of front frame, also showing
the bolts passing through the various lugs.
Figs 15 and 16 are details hereinafter referred to.
Figs. 17, 18 and 19 illustrate in plan, longitudinal section, and side view a
pneumatic cushion suitable for use in connection with this device, and
Fig. 20 is a cross section illustrating the inflating valve.
According to this invention the frame of the velocipede is formed in two parts,
viz. a front frame a and a back frame b, which are connected together at the
bottom bracket e in such a manner as to allow of the back frame b rising and
falling (Fig. 1) while between the two frames a and b and at or near the top
thereof a spring box d is interposed. The bottom bracket c (Figs. 1 and 5) is
built into the back frame 6 the bottom a¹ of the front frame a (Figs. 2 and 3)
being shaped as shown and designed to slip over the central portion of the
bottom bracket c (Fig. 5), where it is secured in place by the cap a² (Figs. 2 and 3)
which slides over the extensions a¹, the bolt a³ taking through the U-shaped
recess e in the cap a² and through the holes or perforations el in the extensions a¹
and locking the whole together, in such a manner that the back frame bis
pivotally connected to the front frame a, and is free to rise or fall with the
inequalities of the road.
Fig. 4 is a section showing the lubricator with cap raised and which is
arranged in the lower part of the front frame so as to come over or coincide with
the hole or opening fin the bottom bracket.
Between the front and back frames a and b a spring box d is arranged, which
consists of laminated springs or spring plates g (Figs. 11 and 12) secured together
by suitable hinges h such as shown at Fig. 13, this spring box being secured
to the front frame a by the brackets g¹ (Figs. 11 and 15) which are bolted to
the lug of the bracket g³ (Figs. 11 and 14), the lugs g being drawn together
by the bolt for clamping the saddle pin in the usual manner, a bolt such as g
being employed for securing the brackets g¹ in place. The extremities g of the
brackets gl pass through the holes or perforations of the plate ¹ (Figs. 11 and 16)
and also through the holes or perforations 2 in the spring plates, where they
are secured preferably by dome shaped nuts j, screws & passing through the central
holes in the plate h¹ and holds in the plates g and entering internally screw
threaded dome shaped nuts 1. The spring box is secured at the other side to
the back frame b by a bracket (Figs. 10 and 11) which is bolted in a similar
manner to the spring plates g, the lugs taking between the upper extremities 61
of the frame where it is secured in place by means of a bolt ².
g
The spring box formed by the plates 9 is further reinforced by suitable spiral
springs m placed between the said plates g, the extremities of the spiral springs
taking over the aforesaid dome-shaped nuts ; whereby they are secured
position.
In
It will thus be seen that when the machine is passing over inequalities of the
road, or over obstacles the vibration is absorbed by the spring box which renders
the machine extremely comfortable to ride, while the method of construction is
such that none of the parts are liable to readily get out of order.
As a modification of this invention instead of reinforcing the spring box formed
by the spring plates g with helical springs, these may be replaced by a pneumatic
cushion such as shown in Figs. 17 to 20 Sheet 4 of the drawings.

page_text: According to this form of the invention a pneumatic cushion n suitably shaped
as shown to take between the spring plates 9, is provided, said cushion being
furnished with recesses n¹ designed to take over the domeshaped nuts j j¹, while
the cushion is formed internally with partitions o to prevent the lateral ex-
pansion of the said cushion when inflated, suitable holes r being formed through
said partitions to allow of the air passing through for the equal inflation of the
said cushion. Canvas or other non-extensible material may be incorporated with
the rubber of the cushion to prevent the expansion of same in any desired direction.
The inflation is preferably effected by a valve such as shown at Fig. 20, in
which represents the stem of the valve which is formed in two parts and
screwed together as at 73, so as to allow of the rubber sheath q being readily slipped
on. To inflate the cushion the cap q' is removed and the pump or inflator applied to
the nozzle ; the air passing down the passage 3 and through the
openings and beneath the sheath q where it enters the interior of the cushion
while in order to allow the air to escape it is only necessary to remove
cap when the air passes through the opening w¹ and into and through the
passage w² of the nozzle w³3. The valve is secured to the sides of the cushion by
the washers t and nuts t which are tightened up against the cone shaped parts t³
of the valve stem.
the
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/. The improvements in anti-vibration devices for velocipedes comprising
b
essentially the formation and arrangement of a front and back frame such as a
hinged or pivotally connected together at the bottom bracket and furnished with
a spring box such as interposed between the said two frames, substantially as
herein described and shown with reference to the accompanying drawings and
for the purposes specified.
2/. The combination with a front and back frame such as a and b, hinged or
pivotally connected to the bottom bracket, of a spring box comprising essentially
the side springs or spring plates 9 hinged together at each extremity as at h
secured to the tops of the frames a and b by the brackets g¹, g¹, and I and rein-
forced by suitable spiral springs j, substantially as herein described and shown
with reference to the accompanying drawings, and for the purposes specified.
3/. The combination with a front and back frame such as a and b hinged or
pivotally connected to the bottom bracket of a spring box comprising essentially
the side springs or spring plates 9 hinged together at each extremity as at h
secured to the tops of the frames a and b by the brackets g¹ g¹ and 7 and reinforced
by a pneumatic cushion of the form shown in Figs. 17 to 20 of the accompanying
drawings, substantially as herein described and shown, and for the purposes
specified..
4. In anti-vibration frames or devices for velocipedes, the general combination,
arrangement and construction of the parts, substantially as herein described and
shown with reference to the accompanying drawings, and for the purposes specified.
Dated this 28th
1000
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.