A Tin Cycle Gear Case.
Year: 1898

page_text: A Tin Cycle Gear Case.
JOSIAH HUMPHRIES, c/o E. Numble, Tower Hill, near Old Market, Bristol,
Tin Cycle Gear Case Maker, do hereby declare the nature of this invention to
be as follows:-
My tin cycle gear case is made up in four sections, too sections form the back
of the case, and too sections forms the front. The too sections on the back have
a beading all round falling inwards, and the too front sections have a beading
all round falling inwards; the too front beadings will fit over the too back
beadings thus making it appear to have only one Beading, too screws go through
the centre of the case which makes it fast.
I, JOSIAH HUMPHRIES, late c/o E. Numble, Tower Hill, near Old Market Street,
Bristol, now c/o Wm. Gummer, 17, Castle Street, Bristol, Tin Cycle Gear.
Case Maker, 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 reference to a tin gear case for enclosing the chain gearing
of cycles and the like, and will be best understood by reference to the accom
panying drawing in which
Fig. 1 is a front view of the gear case in its complete form.
Fig. 2 is a view of the back of the gear case in its complete form.
Fig. 3 is a view of the front of the gear case partly opened for examination
of the chain & gear.
Fig. 4 is a view of the back of the gear case shewing its two component sec-
tions separate..
Fig. 5 is an enlarged view shewing a cross section of the complete gear case
as fixed to the bottom stay of a cycle.
A gear case constructed according to this invention may be made of tin or
other suitable metal, and is composed of four sections, viz. two sections forming
the front and two sections forming the back, each of the four sections has its
edge turned inwards in the form of a bead, which extends from each end round
the outer edge to the line of the horizontal joint at a, the beads or turned edges
[Price 8d.1

page_text: on the two front sections fit over those on the two back sections, the gear case
when fitted together complete, having the appearance of one beading all round-
a suitable channel or groove his formed along the line of the horizontal joint a
on the top half of both the front and back of the gear case, into which the edges
of the corresponding halves of the bottom portions fit tightly when the gear
case is fitted together complete, thus excluding dust and dirt.
The top half of the back of the gear case is further provided with a tongue!
Fig. 4 at each end, which fits into the bead on the bottom half, and assists in
keeping these two sections in their relative positions endwise.
I will now proceed to describe the manner in which the several parts forming
the complete gear case as described herein, are applied to a cycle.
The two sections of the back of the gear case are fixed to the bottom bracket,
or bracket carrying the crank pin by a suitable clip f, one half on each section,
the two sections forming the back of the gear case being further secured in
position by two screws C Fig. 5, passing through a bracket d (attached to the
bottom stay in the usual manner) and screwing into the nuts e fixed on the
outside of the back of the gear case.
The two sections forming the front portion of the gear case are connected by
a hinge at b, and after being opened as shewn in Fig. 3, are passed over the
back portions, and upon being olosed, are kept together by the clasp k, the bead
or turned edge of the front portion enclosing and fitting over the bead on the
back portion as in Fig. 5, the gear case is then complete, but the front is further
secured in position by the previously mentioned screws C Fig. 5, passing through
it and the bracket d, and engaging in the nuts c at the back of the gear case as
before described.
To examine the chain or gear, the bolt in the clasp k should be unscrewed,
also one of the screws C removed (the bottom one for preference) when the lower
half of the front of the gear case may be swung on its hinge b, as in Fig. 3,
exposing to view the chain and gear for examination or cleaning, or, by removing
both the screws C in addition to unbolting the clasp b, the whole of the front of
the gear case may be removed.
The method of attaching a gear case to a cycle by means of the bracket d, as
herein described is not new, and no claim is made in respect of this.
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
The special construction in four sections of a gear case for cycles, made of
tin or other suitable metal, each section having its outer edge turned inwards
to form a bead, the two sections forming the front being hinged, and fitted with
a clasp, and the beads of these two front sections fitting over and enclosing the
beads on the two back sections, substantially as before described, and illustrated
by the accompanying drawing.
Dated this Sixteenth day of February One thousand eight hundred and
JOSIAH HUMPHRIES.