Improvements in and relating to Cycles and the like.
Year: 1897

page_text: Improvements in and relating to Cycles and the like.
I, WILLIAM BRUCE MAIR, of Whyte and Mair, Tay Foundry, Maryfield, Dundee,
in the County of Forfar, Scotland, Engineer, do hereby declare the nature of
this invention to be as follows;
-
This invention relates to improvements in cycles and the like, the objects being
to guard against the cups in which are the ball races, and the pedal pins, acci-
dentally unscrewing, and also to provide an elastic medium between the saddle
and the frame of the machine.
In carrying out my invention according to the modification relating to the
crank sprocket of the type in which there are two sets of split lugs with screws
or bolts for drawing them together, in order to fix the cups when in position,
I make the tightening bolts, in such a way that they cannot turn round except
when their nuts are slackened. Between each pair of lugs, and threaded on the
tightening bolt is a washer with a projection, such washer having an elongated
hole through it. Flats are cut on the bolt so that its washer can only turn round
along with it. A number of serrations or recesses are cut in the outer periphery
of each cup and the projecting portion of each washer engages with one of these,
when it is in position.
If a cup should require to be adjusted, its tightening bolt would have to be
loosened sufficiently to allow of the point of the washer being withdrawn from
its recess. The cup could then be rotated.
In the modification relating to the hubs, I screw each end of the hub barrel
internally to receive the cups in the usual manner and also screw each end
externally for the reception of binding rings. The cups are provided with serra-
tions or recesses similar to those previously described, a similar or proportionate
number of such being cut in and through each end of the barrel. A washer
for each end is provided, such washer having a hole with internal serrations or
projections and so dished that its larger diameter is jammed between a ruff on
the barrel and the inner side of the binding ring, while the projections, con-
forming to the recesses in the barrel, engage with the recess in the cup.
-
In adjusting a cup, the binding ring is unscrewed sufficiently to allow of the
serrated washer being disengaged from its cup, which is then free.
In the modification relating to the pedal pins, I screw the end of the pin into
the crank in the usual manner, that is to say the hole for receiving the pin is
in a solid crank. A hole is bored along the axis of such pin at the screwed end
in which is inserted a tapered expanding screwed pin. The screwed end of the
pedal pin is cut one or more times in planes parallel to its axis in order that
the expanding screw may be made to increase the diameter of such screwed end
after it has been screwed into position.
In the modification relating to the providing of an elastic medium between the
saddle and the frame of the machine, I fit into the pillar tube a cylinder in which
the pin may slide up and down, such cylinder having at its back a cup or

page_text: plate. The end of such L pin is provided with a piston of leather or rubber,
which acts as a drag to prevent free reciprocation of the L pin. Attached to or
forming part of the back of the L pin is a cup or plate similar to the one on the
Lpin cylinder. These two cups may approach to or recede from one another
to some extent in a direction parallel to the axis of the L pin, but are otherwise
constrained in, order that the saddle may not turn round, and they have between
them an elastic medium such as an inflatable air cushion or one or more spiral,
or other springs.
Datad this 15th day of Antahan 1007
Improvements in and relating to Cycles and the like.
I, WILLIAM BRUCE MAIR, of Whyte and Mair, Tay Foundry, Maryfield, Dundee,
in the County of Forfar, Scotland, Engineer, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:―
This invention relates to improvements in cycles and the like, the objects being
to guard against the cups, in which are the ball races, and the pedal pins, acci-
dentally unscrewing; and also to provide an elastic medium between the saddle
and the frame of the machine.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood, I have hereunto
appended two explanatory sheets of drawings in which the same reference
numerals are used to indicate corresponding parts in all the figures where shown,
that is to say::
Figure 1, (Sheet 1) is a section at A, A, (Figure 2), showing the arrangement
of parts of the crank bracket bearing.
Figure 2, (Sheet 1) is an end view of same.
Figure 3, (Sheet 1) is a longitudinal axial section of a hub bearing.
Figure 4, (Sheet 1) is an end view of same.
Figure 5, (Sheet 2) is a section at C, C, (Figure 6) showing how the pedal pin
is secured in position.
Figure 6, (Sheet 2) is an end view of same looking in the direction of the
arrow Z, (Figure 5.)
Figure 7, (Sheet 2) is a vertical side section at D, D, (Figure 9) showing the
disposition of parts relative to the elastic medium between the saddle and the frame
of the machine.
Figure 8, (Sheet 2) is a vertical cross section at E, E, (Figure 9) of same.
Figure 9, is a plan looking in the direction of the arrow X (Figure 7).
In carrying out my invention according to the modification relating to the
crank bracket (Figures 1, and 2) of the type in which there are two sets of split
lugs 10, with screws or bolts 11, for drawing them together in order to fix the
cups 12, when in position, I make the tightening bolts 11, in such a way that
they cannot turn round except when their nuts are slackened, one method of doing
so being by means of the feather 13, which fits into a corresponding recess in
the bracket. Between each pair of lugs 10, and threaded on the tightening
bolt 11, is a washer 14, with a projection 15, such washer having an elongated
hole or its equivalent through it. Flats or their equivalent are cut in the bolt

page_text: so that its washer can only turn round along with it. In the drawings the equi-
valent arrangement of the bolt and its washer consists of a projection 16, on the
washer which fits into a recess 17, in the bolt. A number of serrations or
recesses 18, are cut in the outer periphery of each cup and the projecting portion 15,
of each washer engages with one of these when it is in position.
The
If a cup should require to be adjusted, its tightening bolt 11, and nut 19,
would have to be loosened sufficiently to allow of the feather 13, being withdrawn
from its recess and thus allow the bolt to be partially rotated and with it the
washer 14, until the projection 15, is clear of the recess in which it was.
cup 12, may then be adjusted by screwing it in one direction or the other. When
adjusted, the projection on the washer is made to engage with that one of the
recesses 18, which is nearest and most suitable to it, the bolt 11, is then pushed
fully in and the nut 19, tightened.
In the modification relating to the hubs (Figures 3, and 4,) I screw each end
of the hub barrel 20, internally to receive the cups 21, in the usual manner, and
also screw each end externally for the reception of binding rings 22. The cups
are provided with serrations or recesses 23, similar to those previously described,
a similar or proportionate number of same 24, being cut in and through each end
of the barrel. A washer 25, for each end is provided, such washer having a hole
with internal serrations or projections 23, and so dished that its larger diameter
is jammed between a ruff on the barrel and the inner side of the binding ring 22,
while the projections conforming to the recesses 24, in the barrel, engage with
the recesses in the cup.
In addition to, or supplementary of the binding ring, is a screwed expanding
washer 26, which is screwed on to the cup 21, and when tightened expands the
end of the hub.
In adjusting a cup the washer 26, is first unscrewed entirely and then the
binding ring 22, thus allowing of the serrated washer 25, being disengaged from
its cup, which is then free for adjustment. When adjusted with its recesses 23,
opposite those 24, in the hub, the washer 25, is pushed along the axis of such
hub into the recesses in the cup and the hub until the binding ring 22, and the
washer 26, can be screwed into position as shown in the drawings.
In the modification relating to the pedal pins (Figures 5, and 6,) I screw the
end of the pin 27, into the crank 28, in the usual manner, that is to say the hole
for receiving the pin is in a solid crank. A hole is bored along the axis of such
pin at the screwed end in which is inserted a tapered expanding screwed pin 29.
The screwed end of the pedal pin 27, is cut one or more times in planes parallel
to its axis in order that the expanding screw may be made to increase the diameter
of such screwed end after it has been screwed into position as shown in the
drawings.
In providing an elastic medium between the saddle and the frame of the machine
(Figures 7, 8, and 9,) I fit into the pillar tube 30, a cylinder 31, in which the pin
or its equivalent 32, may slide up and down, such cylinder being provided with
a cup or plate 33. The end of such pin is provided with a piston 34, of leather
or rubber which acts as a drag to prevent free reciprocation of the pin 32.
The piston or ring 34, is kept in position by means of the ferrule 35, which
is screwed into the end of the pin 32, such ferrule having a ruff 36, which acts
as a stop to keep the pin 32, from rising too far when the air cushion is inflated.
In the drawings the pin 32, is shown in its highest position. Attached to or
forming part of the pin 32, is a cup or plate 37, similar to the one on the pin
cylinder 31. These two plates may approach to or recede from one another to
some extent in a direction parallel to the-axis of the pin 32, but are otherwise
constrained in order that the saddle may not turn round, and they have between
them an elastic medium-38, such as an inflatable air cushion, as shown in the
5 drawings, or one or more spiral or other springs. The two plates may be kept
opposite one another by one or more flexible springs 39, whose extremities are
riveted to the plato 37, and secured to the plate 33, by means of screws 40. The

page_text: air cushion may be constructed in any suitable known way or it may consist of a
rubber tube 41, which is protected by a canvas cover 42, the inner portion of such
canvas being attached to a metal ring 43, while the outer edges are clamped
together by a ring 44. 45, is the bolt which secures the saddle springs 46, to the
pin 32. 47, is a serrated bearing piece which engages with the corresponding
top of the pin 32, its function being to adjust the rake of the saddle. 48, is the
air valve whose purpose is to inflate the air tube 41.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I wish it to be particularly
understood that I do not limit myself to the precise details of construction herein-
before described and illustrated on the annexed drawings, but that I hold myself
free to make such changes and alterations as conform with the disposition and
scope of my invention, and I declare that what I claim is;-
-
(1) In cycles and the like, the combination and arrangement of parts for
adjusting and fixing the cups substantially as hereinbefore described and illus-
trated on the drawings (Figures 1, and 2,) the principle and novel features being
the special bolts 11, washers 14, and cups 12.
(2) In cycles and the like, the combination of the bolts 11, with the washers 14,
as described, and for the purposes set forth.
(3) In cycles and the like, the combination and arrangement of parts for adjust-
ing and fixing the cups, substantially as herein before described and illustrated
on the drawings (Figures 3, and 4,) the principle and novel features being the
binding rings 22, washers 26, cups 21, barrel 20, and washers 25.
(4) In cycles and the like, the combination and arrangement of parts for fixing
the pedal pins, substantially as hereinbefore described and illustrated on the
drawings (Figures 5, and 6,) the principle and novel features being the screwed
and split end of the pedal pin 27, and the expanding screw pin 29.
(5) In cycles and the like, the combination and arrangement of parts for pro-
viding an elastic medium between the saddle and the frame of the machine, sub-
stantially as herein before described and illustrated on the drawings (Figures 7,
8, and 9.) the principle and novel features being the cylinder 31, L pin equi-
valent 32, plate 33, piston 34, ferrule 35, plate 37, elastic medium 38, flexible
springs 39, rubber tube 41, cover 42, rings 43, and 44, bolt 45, and serrated
bearing piece 47.
(6) In cycles and the like, the combination of the pin 32, with the piston 34,
and ferrule 35, as described and for the purposes set forth.
(7) In cycles and the like, the combination of the plates 33, and 37, with an
elastic medium 38, as described and for the purposes set forth.
Dated this 14th day of July 1898.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.