Year: 1888

page_text: Date of Application, 16th Feb., 1888
Specification Accepted, 6th Apr., 1888
We GEORGE BUTLER of 1 Lombard Street Manufacturer of Cycle fittings and
SAMUEL STANTON of 132 Tower Road Aston Engineer both of Birmingham, 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 :-
The object of our invention is to provide a dust proof guiding or steering joint or
head for Velocipedes which shall be perfectly adjustable by means of screws and nuts
or screwed bushings which shall all be concentric with the axis of the centre pin of
the joint.
The method in which we accomplish this object is as follows:-
We provide a centre pin which carries the head as in dust proof steering joints or
heads previously made. The body of the pin is parallel by preference and it has a
set off turned on it which bears on a seating inside the head. The lower part screws
into a fixed bushing and the upper part rotates partially in a bushing which is screwed
externally and is thus capable of readjustment in the direction of the length of the
centre pin, and when such adjustment is made so that the head is capable of easy
partial rotation without any end play the position of the upper externally screwed
bushing is secured by a lock nut."
And in order that this our said invention may be more clearly understood we will
now proceed to describe it with the aid of the two sheets of drawings accompanying.

page_text: Similar letters of reference indicate similar parts in each and every figure in which
they occur.
Fig. 1. Sheet 1. shews a dust proof guiding joint for velocipedes constructed
according to our invention partly in section and partly in side view.
Fig. 2. shews a plan of the same.
Fig. 3. shews the centre pin detached.
Fig. 4. is a view of the upper externally screwed bushing detached.
Fig. 5. is a view of the lock nut detached.
Fig. 6. is a view of the lower internally screwed bushing detached.
Fig. 7. Sheet 2. shows our invention partly in section and partly in side elevation
as applied to a bicycle with the ordinary "Stanley head."
Fig. 8. is the ordinary "Stanley head" of a bicycle to a smaller scale in side
elevation, drawn for the purpose of comparison.
Referring to Sheet 1 Figs. 1 and 2 a, is part of the tubular upper portion of the
forks of the steering or guiding wheel and b, and b, are two lugs or Sockets brazed
thereto in the ordinary manner. c is the head to which the framing of the velocipede
is attached as usual by brazing to the boss c¹ it is bored for the reception of the
centre pin d, with a seating at c. d is the centre pin which is turned parallel by
preference in the body d and parallel also above at d', and below at d², it is screwed
with a suitable thread at its lower part d³, it has a set off at d*, and a square at the
top d, by which it is gripped by the spanner when required.-e is the upper bushing
bored internally for the reception of the part d¹ of the centre pin and screwed
externally at e, to screw into the Socket b, which is tapped for its reception. It is
provided with a hexagon or other suitably formed portion e', by which it is gripped by
the spanner when required. f is a lock nut tapped to suit the external screw on the
bushing e-g is a bushing which is let into the lower socket b'.
By reference to Fig. 1 which shews the parts in position partly in section and
partly in side elevation, it will be seen that when the centre pin d is screwed down
into the lower fixed bushing g, the set off at d', pressing on the seating of c², in the
head c, presses the head down on to the top the lower socket b'. This may cause and
after the velocipede has been a considerable time in use, certainly will cause a space /,
to be left between the head c and the upper socket b. To take up the wear and to
fill up this space h, so that the head c shall only have sufficient room to move without
any end-play the bushing e is screwed down far enough and then secured in position
by means of the lock nut f.
«
Referring now to sheet 2 we will explain the application of our dust proof guiding
or steering joint, to the head of a bicycle. Fig. 8 is a drawing of the ordinary
Stanley head" to a reduced scale it will be seen that the tendency of the set screw h,
is to split the head at j, besides allowing dust to get in and increase the friction of the
joint and damage the wearing parts.
Fig. 7 shews our improved dust proof head or steering joint, it is constructed
essentially in the same manner as that previously described and the previous descrip-
tion and letters of reference will apply but the upper hollow portion k. of the fork k¹
takes the place of the tube a, and the sockets and 6' shown in Fig. 1. Also the top
of the fork, is tapped for the reception of the lower end of the centre pin instead
of a bush being provided as at g, Fig. 1, a bushing screwed internally and fixed at k²
may be used if preferred.
We wish to observe that we do not confine ourselves to the precise details herein
given and set forth as various modifications may be made without departing essentially
from the principle of this our said invention.
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 :-
1st. A dust proof guiding or steering joint or head for velocipedes having a central
pin with a body parallel by preference and a set down bearing on a seating in the

page_text: 2nd. The arrangement in combination with a centre pin as above described of an
upper externally screwed bushing for adjustment endways and a lock nut for the same,
also a lower fixed internally screwed bushing or its equivalent the whole being
concentric with the centre pin.
3rd. The application of the dust proof joint as described and shewn in Fig. 7, to
bicycles in place of the ordinary "Stanley head."
4th. The general arrangement construction and combination of parts the whole
forming "Improvements in or relating to guiding or steering joints or heads for
Velocipedes."