Improvements in Apparatus for Adjusting the Gearing Chains of Velocipedes.
Year: 1896

page_text: Date of Application, 21st Apr., 1898
Complete Specification Left, 9th July, 1896-Accepted, 15th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Adjusting the Gearing Chains
of Velocipedes.
We, WILLIAM CHRISTOPHER BARNS, Manufacturer, and CLAUDIUS OWEN
HILLSDON Mechanician, both of Christopher Works, Chalton Street, London,
do hereby declare the nature of this invention to be as follows:-
This invention has for its object to afford a ready means for the accurate
alignment of the driving and steering wheels of a velocipede.
To effect this we mark any convenient and corresponding number of divisions
externally on each of the adjusting nuts of the chain adjuster and number each
series of divisions consecutively and correspondingly. We then make a suitable
mark upon each of the bearing plates against which such adjusting nuts bear and
file each of the adjusting bolts flat, either on the top or outer side so that the
threads thereon may be easily counted.
By adjusting both nuts so that a corresponding number of the threads cut on
the bolts appear above each nut while the corresponding division on each nut is
brought opposite the mark on the bearing plate the accurate alignment of the
driving and steering wheels is ensured.
Or in lieu of the bolts serving as indices, a corresponding scale may be marked
on each of the bearing stays of the driving wheel, while suitable pointers áre
carried on its axle, so that when the adjusting nuts are set, such pointers respectively
indicate the corresponding division in each scale, thus showing that the wheels are
aligued.
Improvements in Apparatus for Adjusting the Gearing Ohains
of Velocipedes.
We, WILLIAM CHRISTOPHER BARNS, Manufacturer, and CLAUDIUS OWEN
HILLSDON, Mechanician, both of Christopher Works, Chalton Street, London,
do hereby declare the nature of this 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 has for its object to afford a ready means for the accurate
alignment of the driving and steering wheels of a velocipede.
Figure 1 of the accompanying drawings shewe in side elevation so much of a
velocipede as is requisite to illustrate our invention;
Figure 2 is a detail view of the adjusting nut shewn in Figure 1, and
Figures 3 and 4 are detail views of certain modifications of our invention
hereinafter more particularly described.

page_text: Our invention consists in furnishing each of the adjusting nuts of the chain
adjustor with a scale a, consisting of an equal number of divisions placed
equidistantly and numbered consecutively and correspondingly as illustrated at
Figure 2. An alternative way of arranging the scale is shewn at Figure 3. Such
scales may either be marked on the nuts themselves, or on suitable collars or their
equivalents fitted thereto or mounted thereon. A suitable pointer b is placed on
oach of the bearing plates against which the adjusting nuts bear, while each of the
adjusting bolts, (hereafter termed "eye bolts"), is filed or otherwise flattened on
its outer side 0, 80 that the threads thereof may be easily counted, and in order to
further facilitate that operation grooves d may be cut in such flattened surface as
shewn in Figure 1. By setting the adjusting nuts so that a corresponding number
of such threads or grooves appear above each nut, while the corresponding division
or number on cach scale is brought opposite the pointer on each bearing plate, the
accurate alignment of the driving and steering wheels of the machine is ensured.
A modification of our invention consists in placing auxiliary corresponding
scales e, Figure 4, on the lower back stays wherein the driving wheel runs, and
auxiliary pointers, either on the eye bolts, as shewn in Figure 4, on the axle
of the driving wheel, whereby we dispense with the necessity for either flattening
or grooving the outer sides of the eye bolts in the manner above described.
Having now particularly described and ascertained the nature of our said inven-,
tion and in what manner the same is to be performed wo declare that what we
claim is ;-
1. In a velocipede, adjusting nuts furnished with corresponding scales a, in
combination with bearing plates provided with pointers b, and eye bolts having the
upper sides c flattened, or flattened and grooved, all substantially as hereinbefore
described and shewn.
2. In a velocipede, lower back stays furnished with auxiliary corresponding
scales e, in combination with eye bolts provided with auxiliary pointers f, all
substantially as herein before described and shewn.
3. lua velocipede, lower back stays furnished with auxiliary corresponding
scales e, in combination with auxiliary pointers f, placed on the axle of the driving
wheel as hereinbefore described.
Dated this 9th day of July 1890.
ELT & Co.,
Registered Patent Agents,
43, Southampton Buildings, Holborn, London, Agents for Applicants.