Improved Arrangement of Appliances connected with Frames of Cycles for Absorbing Vibration.
Year: 1895

page_text: Date of Application, 15th May, 1895
Complete Specification Left, 17th Feb.. 1896-Accepted, 15th May, 1896
PROVISIONAL SPECIFICATION.
Improved Arrangement of Appliances connected with Frames of
Cycles for Absorbing Vibration.
We, EDWARD GOODMAN SHEWARD, of 60 Harold Road, Upper Norwood,
Surrey, Gentleman, and THE MARVEL BICYCLE SYNDICATE LIMITED, of
1 Whittington Avenue, City of London, Cycle Manufacturers do hereby declare the
nature of this invention to be as follows:-
This invention has for object, reducing or preventing the communication of
oscillatory or jolting motion to riders of cycles from inequalities in the road.
By our invention we obtain all the steadiness and absence of vibration of the
pneumatic tyre when using the ordinary solid or cushion tyre by arranging the
absorber of vibration in the frame of the machine without the risk of a puncture
affecting the running capabilities of a machine.
To carry our invention into practice, we affix a plate or coil spring to some
convenient part of the frame of a cycle and curl its free end around over or under
the boss or a swelling so that its extremity can rest upon or be attached to
the "back fork" this being hung from, say the crank bracket to give the wheel
freedom to rise and fall, the vibration thus caused being taken up and isolated from
the rider's seat by the intercepting spring.
As a modification of the above, we may carry a spur or short leg downwardly and
backwardly from crank bracket, and connect the "back fork thereto by a coiled
or other spring for the same purpose.
"
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said Edward Goodman Sheward and
The Marvel Bicycle Syndicate Limited.
Improved Arrangement of Appliances connected with Frames of
Cycles for Absorbing Vibration.
We EDWARD GOODMAN SHEWARD, of 60 Harold Road, Upper Norwood,
Surrey, Gentleman, and THE MARVEL BICYCLE SYNDICATE LIMITED, of
Whittington Avenue, City of London, Cycle Manufacturers do hereby
declare the nature of our said 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 those cycle frames on which the rider is suspended from
above and between the wheels in order that the vibratory and the oscillatory
motions while travelling may be absorbed by springs arranged at or from the pedal
joint socket.
For the purpose of our invention we employ one upper main tube, two lower
main tubes, two centre stays, and two rods as the back fork. The pedal axle
socket is composed of a barrel, screwthreaded on the interior at each end for the
PR1

page_text: reception of ball bearing discs, the exterior of said barrel being flanged at one end
and screw threaded on the other.
Ring plates are provided with chocks which serve as rest pieces in conjunction
with other chocks upon the fork end of the hind wheel should the spring or springs
break.
The ring plates have cups or lugs projecting from the periphery for the
attachment of the lower main tubes and of the centre stays, the back forks
being attached to the cups or lugs projecting from the aforesaid collar which
also has an extension lug projecting forwardly from the collar or rearwardly
from the ring plates for the connection by a spring with some part of the fixed
framing, or the extension can be dispensed with and the spring be affixed direct.
The back forks and the fixed framing are articulated and have a free movement
of one or the other on the barrel limited to the tension of a spring held by both of
them.
The prongs of the back fork have each an eye for the jointing of rods, the
opposite ends of which are jointed to cranks of a cross rod having free play in a
collar passed through the clip of the saddle pillar adjustment the clipping being
effected by a nut on the collar.
The invention is clearly shown in the annexed drawings.
Figure 1, is an elevation of a bicycle with a forwardly arranged tension spring.
Figure 2, elevation of bicycle with rearwardly arranged tension spring.
Figure 3, side elevation on a large scale of the pedal junction pieces of the
forwardly arranged spring, the lug carrying the spring being from the back fork
collar as seen more particularly in the part sectional plan at Figure 4.
Figure 5, side elevation of one of the ring plates with lug from the front frame,
there being
a cross bar to both levers and to both rods of the back fork, the tension
spring being central.
Figure 6, is a similar elevation with a spring of the form represented at Figure 7
being coiled round the first named collar with its bight connected for adjustment to
a screw eye passed through the cross bar of the lug and hooked over the cross bar
of the back fork rods.
Figure 8, is a detached elevation of the tension spring indicated on the bicycle
shown at Figure 2.
Figures 9 to 16 are detail views of the axle, barrel, ball bearing discs, ring
plates, collar, crossbar of lugs and crank levers with saddle pillar clipping device.
Figure 17, represents a cycle in which the lug of the collar and the lugs of the
ring plates are connected to the frame by springs fore and aft of the pedal portion
for combined action as specified.
Figure 18, shows a laminated spring N affixed to the collar or boss I with the
tail of the spring attached by a rod Q and socket to the lower main tube H. By
this modification we dispense with the lug M projecting from collar I previously
referred to and shown.
A is the pedal axle, B, B, ball bearing discs screwed into ends of barrel C.
D flange on barrel C. D' lock nut. E, E¹, ring plates with peripheral
chocks F F F F and with cups or lugs G G' for reception of lower main
tubes H H and centre. stays H' 'H'. I, collar with chocks J J and with
plugs K K for attachment of back fork rods L L. M, lug in Figures 1, 3
and 4, projecting from under collar I for attachment of tension spring N to tube Q
depending from upper ball head R, said tube Q being threaded internally at its
lower end for the swivel screw S to be turned in for adjustment of the springs
tension proportionate to the weight of the rider.
T T, lugs on ring plates carrying cross bar U in which the tension spring N is
adjustable, said spring being looped centrally on the cross bar V of the back fork
rods L L', see Figures 13 and 17.
The back rods L L' have bolt eyes W W for connection of rods X X, the
upper ends of which are pin jointed to short levers Y Y¹ oscillating from the
clipping device of the saddle pillar adjustment bolt Z.

page_text: The rods XX' by their connection to the levers and back rods allow free up
and down movement of the back rods from the crank axle point of support but
prevent any tendency to wobble of the back wheel or its frame.
The short lever Y is made in a piece with the bolt Z having a square on part of
its length for the other short lever Y¹ to fit, said second lever being secured by a
The bolt Z passes through a sleeve 6 inserted in the clip wings, as shown
by the dotted lines in Figure 16, said sleeve having a tightening nut c for clipping
the socket on the saddle pillar H'.
out a.
We are aware that suspension frames for cycles in which springs for absorbing
the vibratory and oscillatory motions while travelling have been used we therefore
make no claim to the mode of suspension, but
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In a cycle frame, the barrel C with flange D, lock nut D', said barrel C
containing at either end the ball bearing discs B of the axle A in combination with
ring plates E, E¹ lugs G, G₁ which carry the lower main tubes H, H and
centre stays H₁ H', and the collar I by the plugs K, K' carrying the back
forks L L', as shown and set forth.
2. In a cycle frame, the combination of barrel C, lock nut D', end discs B B,
ring plates E, E¹ centre stays H', H', lower main tubes H, H with the collar Í
having the projecting lug M, or lugs T T on ring plates E E¹, as shown and
set forth.
3. In a cycle frame, the combination of barrel C, lock nut D', and discs B B,
ring plates E E' collar I, back forks L L with rods X X', connecting back
fork L L with short levers Y Y having motion from centre stays H¹ H', and
clipping device as shown and specified.
4. In a cycle frame, the combination of barrel C carrying collar I, ring
plates E E each or all having lugs M M T T¹, with tension springs N for
connecting said lugs to post Q and to back fork respectively or collectively as
shown and set forth.
5. In a cycle frame, the barrel C, ring plates E E', the combination of coiled
springs such as shown at Figures 7 and 8 for partially or wholly surrounding the
barrel C and having their ends affixed to frame, substantially as shown at Figures 2
aud 6 as specified.
6. The placing of a plate or laminated spring lug N or M direct to the collar I
for spring connection with main frame of a cycle, substantially as represented at
Figure 18.
1
ה
1000
H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for E. G. Sheward and The Marvel Bicycle Syndicate Limited.