Adjustable Handle Bar for Bicycles, Tricycles, and the like.
Year: 1897

page_text: Date of Application, 12th Mar., 1897
Complete Specification Left, 11th Dec., 1897-Accepted, 12th Mar., 1898
PROVISIONAL SPECIFICATION.
Adjustable Handle Bar for Bicycles, Tricycles, and the like.
I, CHRISTIAN ALBERT JENSEN, of No. 77, Chancery Lane, in the County of
Middlesex, Chartered Patent Agent, do hereby declare the nature of this invention,
a communication to me from abroad by Norsk Bicyklefabrik, Christiania, Norway,
to be as follows: -
The object of this invention is to procure such a construction of the handle bar,
that even while riding the handles may easily be adjusted in a lower or higher
position so as to be suitable for the rider at any time.
The crosshead, in which the handle bar is usually fixed is provided with a fixed
sleeve reaching to about the middle of the hole, the interior end of the sleeve being
provided with teeth. On the handle bar, which exactly fits the said sleeve in the
crosshead is fixed a corresponding sleeve which fills the other half of the hole,
and the interior end of which is also provided with teeth in order to gear with
the teeth on the said sleeve in the crosshead. The two sleeves are kept in gear
by a nut with a milled edge or provided with projections so as to be easily turned
by hand. When both sleeves are kept in gear by the nut the handle bar is pre-
vented from turning. If however the nut is loosened, the handle bar may be
displaced so much to one side, that the teeth come out of gear, and the handle bar
may then be turned until the handles have obtained the desired position, where-
upon it is again locked by tightening the nut.
It is clear, that in this way the position of the handles may very easily be altered
during the ride without having need of any tool. Of course the one casing may
be replaced by a single or a few teeth.
I do not confine myself to the use of a nut for retaining the teeth in gear as
this may be accomplished in any suitable manner.
I may further use a modified construction by which the handle bar can be turned
only and not displaced to one side in which case one sleeve must be capable of
sliding but without revolving.
COMPLETE SPECIFICATION.
Adjustable Handle Bar for Bicycles, Tricycles, and the like.
I, CHRISTIAN ALBERT JENSEN, of No. 77, Chancery Lane, in the County of
Middlesex, Chartered Patent Agent, do hereby declare the nature of this invention,
a communication to me from abroad by Norsk Bicyklefabrik, Christiania, Norway,
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 this invention is to procure such a construction of the handle bar,

page_text: that even while riding the handles may easily be adjusted in a lower or higher
position so as to be suitable for the rider at any time.
In the annexed drawings Figure I shews the cross head with the handle bar
in two different positions, one of which is shown in dotted lines. Figure 2 is a
sectional view of the upper part of the crosshead, shewing the manner in which
the handle bar is fixed in same. Figure 3 is a view of the cross or steering head
and the handle bar, and Figure 4 is a sectional view of a modification.
The crosshead A in which the handle bar is usually fixed is provided with a
fixed sleeve B reaching to about the middle of the hole, the interior
end of the sleeve being provided with teeth C. On the handle bar D, which
exactly fits the said sleeve B in the crosshead is fixed a corresponding sleeve E
which fills the other half of the hole, and the interior end of which is also provided
with teeth in order to gear with the teeth C on the said sleeve in the cross head.
The two sleeves B and E are kept in gear by a nut G with a milled edge or pro-
vided with projections so as to be easily turned by hand. In the drawing the
parts are shewn out of gear with each other. When both sleeves are kept in gear
by the nut the handle bar is prevented from turning. If however the nut Ġ is
loosened, the handle bar may be displaced so much to one side, that the teeth come
out of gear, and the handle bar may then be turned until the handles have obtained
the desired position, whereupon it is again locked by tightening the nut G.
It is clear, that in this way the position of the handles may very easily be altered
during the ride without having need of any tool. Of course if desired, one of the
sleeves may be provided with a single tooth or with a few teeth, instead of having
them all round the end as shown in Figure 2.
I do not confine myself to the use of a nut for retaining the teeth in gear as this
may be accomplished in any suitable manner.
I may further use a modified construction as shown in Figure 4 by which the
handle bar can only be turned and not displaced to one side it being provided with
a stud H which is guided in a slot B¹ in the fixed sleeve B in which case the other
sleeve El must be capable of sliding but not revolving, its longitudinal motion being
limited by a slot I therein and a stud I in the handle bar D.
'
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is :-
1. In an adjustable handle-bar for bicycles the combination, that the handle-bar
is kept in various positions in a horizontal boring in the head, in which it is
mounted, by means of a casing, or part of a casing, fastened in the boring, and
another casing, or part of a casing, fastened to the handle bar, both casings, or
parts of casings, provided with teeth adapted to gear with another, so that the
handle-bar may be turned, when the teeth are put out of gear, but is fixed (locked)
when the teeth are in gear, substantially as set forth.
2. In the construction specified in Claim 1, the fastening of the handle-bar in
the boring by means of a nut.
3. The following modification of the construction specified in Claim 1, that the
handle bar is only rotatable and not laterally displaceable, while the one lock
casing is displaceable, but not rotatably fastened to the boring in the head, in which
the handle bar is mounted.
4. The constructions of adjustable handle bar shewn on the drawing.
וד
1004
day of December 1897.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.