IMPROVEMENT IN TRICYCLES:-
Year: 1887

page_text: Date of Application, 7th Apr., 1887
Complete Left, 5th Jan., 1888
Complete Accepted, 24th Feb., 1888
I JAMES PARR, of 6.1 Friar Lane Leicester Tricycle Manufacturer do hereby declare
the nature of this invention to be as follows, IMPROVEMENT IN TRICYCLES:-
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A great inconvenience in a tricycle is its width which will not permit it to pass
through an ordinary doorway now my invention is designed to remedy this objection.
The top bar & sleeve or outer case which is the subject of this specification is con-
structed as follows. A top bar consisting of a horizontal tube runs parallel with main
axle which is in two parts. A portion of top bar carries two bearings in which one
part of main axle revolves, the other portion of top bar carrying a sleeve or outer case
on which or more bearings are fixed in which other part of main axle revolves. The
outer case or sleeve on which 2 bands are fitted, the bands & sleeve being split &
provided with a screw in each band enables the outer case to be gripped tight & held
in position on the top bar. Or the outer case may be fitted either taper or parallel on
to the top bar & held in position either by a taper key running through sleeve & inner
Or the outer case or sleeve
tube or by a nut or set screw at end of sleove or tube.
may be made taper & split & a thread cut on, on which a nut fits & by tightening the
nut the sleeve is gripped tight on the top bar. The simple action of slackening or
removing the keys, nuts, or set pins herein described, allows the sleeve carrying two
bearings, portion of axle, & 1 wheel to be removed which greatly reduces the width of
tricycle.

page_text: 1 JAMES PARR of 61 Friar Lane Leicester, Bicycle & Tricycle Manufacturer 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:-
The object of the present invention is to construct a tricycle, or similar wheeled
vehicle, capable of being reduced in width and of being passed through an ordinary
doorway.
In the accompanying drawings,
Figure 1 is an elevation partly in section of the axle and driving gear of a tricycle.
A and A represent the main axle, which is formed in two parts, each part carrying
near its centre an internally toothed wheel B, which is connected with the sprocket
driving wheel B by means of the well known balance or jack in the box gear, and
participates in the motion of the latter.
Supported by bearings C and (and running parallel above the main axle, is a
horizontal tubular bar or trame D, one part of which is received into an outer case or
sleeve D'.
The outer case or sleeve D is split or cut a required distance in the direction of its
length at E. E. to allow of it being tightened over the encased portion of the bar 1)
by screws F. F. through the split bands G G, or equivalent means. When it is
desired to reduce the width of the tricycle, the screws F F are slackened in the
bands G. G, and the part of the axle A carrying the wheel A³, and the sleeve or outer
case D, can be drawn outwards and thus detached or separated from the rest of the
machine. In order to provide against loss of strength in consequence of the main
axle being divided, the inner end of the part of the axle A' may be reduced in diameter
as shewn at A and fitted into the end of the hollow axle A².
Figure 2 is a modification of my invention, the tubular bar D, being shewn as the
part to be removed with the wheel A³; and the sleeve D' being fixed to the opposite
side of the machine to that described and shewn in Figure 1.
Figure 3 is also a modification shewing the bar D and sleeve D¹ tapered, the bar
being screw threaded at its outer end and fitted with a nut F.
Figure 4 represents the bar D and sleeve D' being connected together by means of
cotters or keys I, 1, passing through the bands H, H upon the sleeve D¹ and also
through the tubular bar D.
The outer case or sleeve D¹ need not necessarily completely encase the tubular bar D,
as it may be divided in the direction of its length so that the bar may rest in the
lower part of the sleeve, the two being secured together by split bands G or equivalent
means.

page_text: 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 the frame of a tricycle or similar vehicle the combination with the projecting
portion D of the main or non-removable framework of a sleeve such as D' split as at E
and provided with split bands G by which it may be tightened upon D substantially
as and for the purpose described and illustrated in Figure 1 of the accompanying
drawings.
2. In the frame of a tricycle or similar vehicle the combination with the projecting
portion D of the main or non removable framework of a sleeve such as D' having a
strengthening band H through which passes the cottar or wedge I by which D and D'
are held together substantially as and for the purpose described and illustrated in
Figure 4 of the accompanying drawings.
3. In the frame of a tricycle or similar vehicle the combination with the tapered
portion D of the main or non-removable framework of a correspondingly tapered tube
or sleeve such as D'adapted to fit upon D and be secured thereon by a nut screwed
upon a bolt projecting from D substantially as and for the purpose described and
illustrated in Figure 3 of the accompanying drawings.
4. In the frame of a tricycle or similar vehicle the combination of the removable
bar or tube D which carries the detachable portion of the machine, with the sleeve
or tube D' of the main or non-removable framework split as at E and provided
with split bands G by which it may be tightened upon D substantially as and for
the purpose described and illustrated in Figure 2 of the accompanying drawings.
LAARS
Witness,
EDWARD N. LEWIS,
Patent Agent,
Berridge Street Chambers,
Leicester.
J. PARR.