Improvements in and relating to Velocipedes.
Year: 1896

page_text: Date of Application, 27th Nov., 1896
Complete Specification Left, 27th Sept., 1897-Accepted, 6th Nov., 1897
PROVISIONAL SPECIFICATION.
Improvements in and relating to Velocipedes.
I, ARCHIBALD WAYNE DINGMAN of 49, Huntley Street, Toronto, Ontario, in
the Dominion of Canada, but now temporarily residing at 29, Montague Place,
Bloomsbury, in the City and County of London, Manufacturer, do hereby declare
the nature of this invention which has been communicated to me from abroad
by Robert Scott Anderson of Jarvis Street, Toronto, Canada, Machinist, to be as
follows:-
This invention relates to an improved method of mounting the axle of the
driving wheel of a bicycle or other velocipede and it has for its object enabling
the wheel with its axle and bearings to be removed from the frame without dis-
turbing the adjustment of the bearings or detach the parts the one from the other,
and providing for the adjustment of the tension of the driving chain in a simple
and ready manner.
According to this invention the parts of the frame adapted to carry the axle
of the driving wheel are provided with circular holes of a diameter considerably
greater than that of the axle, and in each of these holes is a central circular flange.
The frame-preferably on the underside-is slotted through to the said holes
the width of the said slots being less than the diameter of the flanges in the
said holes.
On each end of the axle outside the cones for the ball bearings are eccentrically
mounted two discs, one being fixed to the axle and the other mounted thereon
in such a manner that while it has no independent rotative movement apart from
the axle it is capable of moving longitudinally thereon. These discs are of a
size to fit in the holes in the frame hereinbefore described and they are provided
with circumferential grooves to receive the flanges in the said holes. In the
groove in each of these discs are cut two flats diametrically opposite to each
oner thereby reducing the diameter of the said grooves to such an extent as will
enable the said dises to be passed through the slots in the frame hereinbefore
described. When the discs carrying the axle are in place in the said holes the
discs are rotated until the flattened parts of the grooves in them do not coincide
with the slots in the frame. To retain the discs in this position a lever is mounted
on the outer face of the disc fixed to the axle and its free end is shaped to adapt
it to engage with a catch on the frame. This lever also provides a means of
rotating the dises when it is desired to dismount the wheel and its axle from the
frame.
Owing to the eccentricity of the holes in the discs carrying the axle it will be
apparent that the position of the said axle with respect to the frame can be varied
for the purpose of adjusting the tension of the driving wheel by rotating the
said dises in the frame. To enable this to be done the hole in the boss of the
locking lever through which the end of the axle passes takes the form of a slot,
and a similar slot is also provided in the boss of the locking lever for a locking
stud carried by the fixed eccentric disc to pass through, the said stud being pro-
vided with a suitable nut.

page_text: When it is desired to adjust the tension of the driving chain the nut on the
end of the axle nearest to the fixed eccentric disc is slackened as is also the nut
on the stud carried by the disc. The axle is then rotated by the nut on the other
end of the axle until the required adjustment is obtained, the nuts on the end
of the axle and stud respectively are then tightened up.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I.Mech. E.,
Consulting Engineer & Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
Improvements in and relating to Velocipedes.
I, ARCHIBALD WAYNE DINGMAN of 49, Huntley Street, Toronto, Ontario, in
the Dominion of Canada, Manufacturer, do hereby declare the nature of this
invention which has been communicated to me from abroad by Robert Scott
Anderson of Jarvis Street, Toronto, Canada, Machinist, 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 an improved method of and device for, mounting the
axle of the driving wheel of a bicycle or other velocipede in the frame adapted to
carry it, and it has for its object enabling the wheel with its axle and bearings
to be removed from the frame without disturbing the adjustment of the bearings
or detaching the parts the one from the other, and providing for the adjustment of
the tension of the driving chain in a simple and ready manner.
In the accompanying drawing which illustrates this invention:-
Figure 1 is a broken view in side elevation.
Figure 2 is a broken sectional view in plan and
Figure 3 is a broken view in side elevation-partly in section-illustrating how
the axle of the wheel is mounted and dismounted.
Throughout the views similar parts are marked with like letters of reference.
According to this invention the members of the frame adapted to carry
the axle A of the driving wheel are provided with brackets or bearings B in
each of which is a circular hole b of a diameter considerably greater than that
of the axle, and having a central circular flange b'. The brackets or bearings B
are slotted through preferably on the underside- -to the holes the width of
the said slots being less than the diameter of the flanges in the said holes.
On each end of the axle A outside the cones y, y, of the ball bearing is
eccentrically mounted a disc C the one next to the non-adjustable cone being
fixed to the axle A and the other mounted thereon in such a manner that while
it has no independent rotative movement apart from the axle it is capable of
moving longitudinally thereon. The discs Care of a size to fit in the holes b
in the brackets or bosses B and they are provided with circumferential grooves_c
to receive the flanges b in the said holes. In the bottom of the groove c in each
of these discs are cut two flats c diametrically opposite to each other thereby
reducing the diameter of the said grooves to such an extent as will enable the
discs C to be passed through the slots in the brackets or bearings B as shown
by Figure 3. When the discs C are in place in the holes 6 they are rotated until
the flattened parts c¹ of the grooves e in them do not coincide with the slots in
the brackets or bearings B. To retain the discs in this position a lever D) is
mounted on the outer face of the dise
shaped to adapt it to engage with a pin
fixed to the axle, and its free end d is
r', or its equivalent, on the frame. This

page_text: lever D also provides a means of rotating the discs C when it is desired to dis-
mount the wheel and its axle from the frame.
In the discs C are holes adapted to receive the axle A. These holes are placed
eccentrically with the discs as shown and have keys or feathers in them which
are adapted to slide in keyways or featherways a in the ends of the axle A.
Owing to the eccentricity of the axle A with respect to the discs C it will be
apparent that the position of the said axle with respect to the frame can be varied
for the purpose of adjusting the tension of the driving wheel by rotating the
said discs in the frame. To enable this to be done without disengaging the
lever D from the frame, the hole d' in the boss of the said lever through which
the end of the axle A passes, takes the form of a slot, and a similar slot dis
also provided in the boss of the locking lever D on the opposite side of its centre
for a locking bolt E, which screws into the dise C, to pass through.
When it is desired to adjust the tension of the driving chain the nut a on
the end of the axle A nearest to the fixed eccentric disc C and the bolt E are
slackened, the axle A is then rotated by the nut al on its other end until the
required adjustment is obtained, the nut a and the bolt E are then respectively
tightened up.
To dismount the driving wheel, the free end d of the lever D is disengaged
from the frame and it is turned down until the flattened parts c¹ of the grooves c
of the discs C are in a position to pass through the slots in the brackets or bear-
ings B as shown by Figure 3.
As the cones y, y, of the ball bearing are inside the discs C and as the adjust-
able cone is operated independently of the said dises it will be seen that when
once the adjustment of the bearing has been made it is in no way disturbed either
when adjusting the tension of the driving chain or when removing the wheel
from the frame.
It will be obvious that by the construction hereinbefore described the centre
of the sprocket wheel on the driving wheel can be easily and readily brought
sufficiently near to the centre of the sprocket wheel on the pedal-crank axle to
so stacken the driving chain that it can be dismounted from the sprocket wheels
without the necessity of disconnecting any of its links.
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:-
(1). The improvements in and relating to velocipedes, substantially as herein-
before set forth and illustrated by the accompanying drawing.
(2). In a velocipede, mounting eccentric discs adapted to carry the axle of the
driving wheel or wheels in the frame of the machine in the manner hereinbefore
descrilied and illustrated by the accompanying drawing for the purpose of
allowing the axle and wheel to be removed from the frame without disturbing
the adjustment of the hearings, and providing means for varying the tension of
the driving chain.
(3). In a velocipede the combination with the axle of the driving wheel of
dises such as C mounted eccentrically thereon and of brackets or bearings such
as B in the frame adapted to receive the discs C and slotted outwardly and open
to admit of the passage of the discs into the brackets or bearings, as set forth."
(4). In a velocipede the combination with the axle of the driving wheel, of
dises such as C mounted eccentrically thereon and of brackets or bearings such
as B in the frame adapted to receive the discs C and slotted outwardly and open
to admit of the passage of the discs into the brackets or bearings, the width of
the slot or opening being less than the diameter of the bearing, as set forth.
(5). In a velocipede the combination with the axle of the driving wheel, of
discs such as C mounted eccentrically thereon, of brackets or bearings such as B
in the frame adapted to receive the dises C and slotted outwardly and open to
admit of the passage of the discs into the bearings, and of a lever such as 1)

page_text: mounted on one of the eccentric discs C and adapted to engage with the frame of
the machine as and for the purpose set forth.
(6). In a velocipede the combination with the axle of the driving wheel, of
discs such as C mounted eccentrically on the said axle the one having neither
rotary or longitudinal movement thereon and the other having longitudinal but
no rotary movement thereon, the said discs having circumferential grooves such
as c in the bottoms of which are cut flats such as c diametrically opposite to each
other, of bearings or brackets such as B carried by the frame the said brackets
or bearings having circular holes such as 6 with internal flanges such as 6' adapted
to receive the eccentric discs C, the said bearings or brackets being slotted out-
wardly to allow the grooved eccentric discs C to be placed in the said brackets or
bearings, and of a lever such as 1) attached to the disc C next to the fixed cone
of the ball bearings and having its end d adapted to engage with a pin or catch
such as ¹ on the frame, as and for the purpose set forth.
Dated this 27th day of September 1897
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I.Mech. E.,
Consulting Engineer & Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.