Means for Adjusting the Position of the Saddle on Cycles.
Year: 1899

page_text: Date of Application, 2200 Apr., 1899
Complete Specification Left, 22nd Jan., 1900—Accepted, 24th Feb., 1900
Date of Application, 2200 Apr., 1899
Complete Specification Left, 22nd Jan., 1900-Accepted, 24th Feb., 1900
PROVISIONAL SPECIFICATION.
Means for Adjusting the Position of the Saddle on Cycles.
I, JAMES DUNLOP, of Sydney Cottage, Neilston, in the County of Renfrew,
North Britain, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to means for adjusting the position of the saddle on
cycles. In mounting an incline a cyclist often finds that it taxes his energies
severely to propel his machine and frequently necessitates his dismounting and
walking uphill. This lack of driving power is largely due to the centre of gravity
of his body being withdrawn from above the driving pedal and causing the
rider more directly to lean on the saddle, thus withdrawing his bodily weight from
the driving peddle. By my device the rider can adjust his seat to suit the incline;
this consists in mounting the saddle upon a bridge of T iron or tubing or its
equivalent, curved with a radius from the centre of the crank bearings, and
extending across the full length of the top stay of the bicycle, fixed at back to
the present adjustable seat stalk and at front to the top stay by an adjustable
collar. The saddle which can be conveniently moved along the bridge at the
will of the rider, may have a steel bit attached which engages with teeth on the
underside of the bridge and thereby can be stationed at any desired position.
For ladies machines the bridge only comes a little further than the point of
the saddle, and fixed at one end only, to the present scat stalk; or the bridge
may be a curved continuation of the seat stalk.
Dated this 21st der of A 1000
JOHNSONS,
Petitioner's Agents, 115, St. Vincent Street, Glasgow.
Means for Adjusting the Position of the Saddle on Cycles.
I, JAMES DUNLOP, of Sydney Cottage, Neilston, in the County of Renfrew,
North Britain, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to means for adjusting the position of the saddle on
cycles. In mounting an incline a cyclist often finds that it taxes his energies
severely to propel his machine and frequently necessitates his dismounting and
walking uphill. This lack of driving power is largely due to the centre of gravity
of his body being withdrawn from above the driving pedal and causing the
rider more directly to lean on the saddle thus withdrawing his bodily weight from
the driving pedal. By my device the rider can adjust his seat to suit the incline.
TD 077

page_text: in the accompanying drawings,
Fig. 1 is a side view of a cycle saddle, partly in section, showing one form of
means for adjusting its position.
Fig. 2 is a cross section of the bridge or seat stalk made in accordance with
my invention.
Figs. 3 to 7 are similar views of three modifications and
Fig. 8 is a side elevation and
Fig. 9 a rear view of a still further modification.
Referring to Figs. 1 and 2, I attach the saddle in any convenient manner to
two depending links A one at each side of the bridge D, and I pivot these
links at a to links B which in turn are pivoted at a¹ to a slide block C which is
mounted upon the bridge or saddle stalk D. The said bridge is curved with a
radius from the centre of the crank bearings. The pivot a carries a cam E
which bears. upon the under side of the said bridge and keeps the sliding piece
firmly in position as long as the riders weight is upon the saddle, but when ascend-
ing a hill and it is required to shift the position of the saddle, the rider has merely
to relieve the saddle of his weight when the cam is released and the saddle can be
easily and quickly shifted by the hand to the position desired.
I prefer with this arrangement to make the bridge of a triangular shape in
cross section as shewn in Fig. 2.
As a modification I may employ a bridge of inverted U shape in section as
shewn in Figs. 3 and 4, the saddle depending links A in this case being only
capable of occupying two positions, the first being that shewn in the fig. and the
second at an equal distance on the other side of the bracket F, the pivot a passing
through the arc shewn.
Or I may vary the position of the saddle by the means shewn in Fig. 5 consist-
ing of a screw G situated below the bridge and carried in journals g at each end.
A sliding companion screw not shewn is employed with the sliding block C and
travels along the screw G when the latter is rotated by either of the thumb
pieces G¹.
Or the sliding block may be actuated by a cord wire or chain H, as shewn
in Fig. 6, which is wound and unwound upon a drum or pulley H', rotated through
the handle h. In this case the section of the bridge preferably approaches that
shewn in Fig. 7.
In Figs. 8 and 9 which illustrate a still further modification of my invention,
I employ two stays J pivoted at the crank bearings J' so that they are free to
oscillate to a certain extent. The amount of movement is controlled and the
position of the saddle fixed by a spring actuated pawl K which engages with a
rack, or ratchet teeth, formed along the upper surface of the horizontal bar k.
L is a stop to prevent the stay J from advancing too far.
The cross piece or stool L' is made adjustable as to height and the saddle is
carried by the depending links A as in the former cases.
In each of the foregoing several arrangements, it is to be understood that the
depending links a are mounted so that they can pivot freely, thereby enabling
the saddle to occupy the same relative angle to the level, no matter in what
position it may be.
Although the bridge D is specified as curved at a radius from the crank shaft,
the said bridge might be constructed straight that is to say, similar to the exist.
ing saddle bar.
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. In means for adjusting the position of the saddle on cycles, a bridge or seat
stalk curved with a radius from the centre of the crank bearing, or the mechanical
equivalent thereof, on which the cycle saddle is mounted so that the saddle is

page_text: free to slide or be moved therealong, substantially as hereinbefore described and
in part shewn in the accompanying drawings.
2. The general arrangement, construction and combination of the parts of the
several modifications constituting the means for adjusting the position of the
saddle on cycles, substantially as hereinbefore described and in part shewn in
the accompanying drawings.
1
0011
1
P
1000
JOHNSONS,
Applicant's Agents, 115, St. Vincent Street, Glasgow.