Year: 1896

page_text: We, WILLIAM HALL JONES and BENJAMIN HIGHFIELD JONES, Directors of Jones
Brothers and Company, Wolverhampton, Limited, of Ablow Street, Wolverhampton
in the County of Stafford, Sheet Metal Workers and Japanners, do hereby declare
the nature of this invention to be as follows:-
This invention relates to that class of gear case for a cycle in which the main
lengths of the portions of the driving chains which pass between the chain wheels
pass, respectively, through upper and lower tubes which join together the portions
of the case which enclose the chain wheels; and a special object of the invention is
improved means for enabling the case to be put in place upon the machine with the
back stay passing through the opening which is bounded by the upper and lower
tubes and the two ends of the case.
According to this invention, the inner half of one of the portions of the case which
enclose the chain wheels, preferably that portion which encloses the driving chain
wheel, is formed as a permanent fixture to the corresponding ends of the two tubes,
and the opposite end or portion which encloses the other chain wheel is, or a portion
or portions thereof are, readily capable of being moved so that the space between the
tubes may be open-ended at the corresponding ends of the tubes, and thus permit
the tubes to be passed the one over and the other under the stay bar previously to
closing up the end which has been opened. To enable the forward end of the case
to be placed around the driving chain wheel, the outer or forward half of such end is
made removable from the other half, or is hinged thereto.
The hinder portion of the case, that is to say the portion which surrounds the
driven chain wheel, has the semi-circular end thereof hinged to the hinder end of one
of the tubes, preferably the lower tube, and is fixed to the hinder end of the other
tube by means of a screw or other device which can be readily unfastened. Guides
are formed on the two outer faces of each tube at the hinder end thereof, and that
portion of the forward half of the chain wheel which is not enclosed by the hinder
ends of the tubes is enclosed by a sliding-piece which is of U-section, as seen on
plan, the parallel sides of the U forming plates which slide along the guides
aforesaid, and the yoke of the U forming the joining piece between the two plates
and closing in the forward end of the space which is bounded by the two plates and
the upper and lower tubes. When the case is to be removed from a machine, the
semi-circular hinder end is opened out and the sliding U-piece is slid back along the
guides and out therefrom.
Dated this 0th day of Santain bar 1906

page_text: We, WILLIAM HALL JONES, and BENJAMIN HIGHFIELD JONES, Directors of Jones
Brothers and Company, Wolverhampton, Limited, of Ablow Street, Wolverhampton in
the County of Stafford, Sheet Metal Workers and Japanners, 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 relates to that class of gear case for a cycle in which the main
lengths of the portions of the driving chain which pass between the chain wheels pass,
respectively, through upper and lower tubes which join together the portions of the
case which enclose the chain wheels; and the special object of the invention is
improved means for enabling the case to be put in place upon the machine, with the
back stay passing through the opening which is bounded by the upper and lower
tubes and the two ends of the case, and to be readily removed therefrom.
A gear case, constructed according to this invention, is shewn by the drawings
herewith, of which Figure 1 is an elevation of the outer side of the case, shewing the
case to be closed up as when in position upon a machine. Figure 2 is a corresponding
view to Figure 1, but shews the ends of the case open to enable it to be placed in
position upon, or removed from, a machine, and shews the U-piece, hereinafter
described, as in a position it assumes whilst being removed from the case or replaced
therein. Figure 3 is a section in the plane of the line x x of Figure 1, looking
towards the forward end of the case, the portions beyond the plane being omitted to
avoid confusion; and Figure 4 is a sectional plan taken through the middle of the
U-piece hereinafter described.
Â A are tubular portions through which the upper and lower lengths of the driving
chain pass, and extend between the portions of the case which, respectively, surround
the chain wheels. The outer portion B of the part of the case which surrounds the
driving chain wheel is divided from the other portion thereof, preferably, at or about
the vertical line passing through the centre of the opening through which the driving
axle passes, and such other portion C is permanently rigid with the tubular portions A
of the case. The portion B is hinged at its lower edge to the lower edge of the
portion C, so that it may be opened out therefrom as shewn by Figure 2, or may be
closed up thereagainst as shewn by Figure 1; and, when closed up, it is secured in
place by a screw a which is passed for the purpose through a projecting tongue b of
the portion B and is screwed into a nut soldered inside the part C. The hinder end D
of the case is divided from the tubular portions A, and preferably in the manner
shewn, that is to say, in a manner which leaves the lower tubular portion considerably
longer than the upper, this arrangement being permissible in consequence of the
lower tubular portion not having to be passed across the front edge of the upper back
stay as the case is removed from or placed upon the machine. The portion D is
hinged at its lower edge to the lower edge of the hinder end of the lower tubular
portion, so that it may be opened out as shewn by Figure 2, or closed up as shewn by
Figure 1. When the portion D is closed up, it may be held in such position by means
of a screw c, which passes through the upward portion of an angle-piece d fixed to
the upper tubular portion A and is screwed into the upward portion of a corresponding
angle-piece fix ed to the upper forward edge of the portion D. A longitudinal
guide e is fixed at each side of the exterior of the lower tubular portion A, and a
corresponding guide f is fixed to each outside face of the portion D; and
when the portion D is closed up, as shewn by Figure 1, the guides fare
parallel, as shewn, with the guides e. A U-piece E, which when the case is
properly closed up in position covers in a portion of the forward side of the

page_text: driven chain wheel, is formed with its two sides g of a depth which adapta
them to be engaged with the guides ef, when the hinder end of the case is
closed up as shewn by Figure 1, and with its yoke & shaped to fit neatly between the
upper and lower tubular portions A and completely close in the forward end of
the space which is bounded by the two tubular portions A and the two sides g of the
U-piece. When the hinder portion D of the case is closed up, as shewn by Figure 1,
the guides fare engaged with the upper edges of the sides g of the U-piece. The
hinder edges of the U-piece are formed with semi-circular notches to fit around the
forward side of the hind axle and hub, respectively.
When the case is to be removed from a machine, the ends B and D are opened out,
as shewn by Figure 2. The driving chain is then disconnected, and the hind axle
drawn back so as to allow of the removal of the U-piece E. The U-piece is then
moved into the position shewn by Figure 2, and may thus be readily moved clear of
the driven chain wheel, and removed from the case. The hinder portion of the case
may then be moved out sideways clear of the machine, and the forward portion of the
case may then be drawn away from the driving chain wheel, thus clearing the
entire case from the machine.
The hinder part of the case is conveniently fixed to the stay by means of a yoke i
which is fixed to the tubular portions A of the case and passes around the outside of
the stay. A set-pin ma is screwed through the crown of the yoke, and its inner end
bears against the stay and thus draws the outer face of the hinder end of the case
against the framing of the machine and holds it firmly thereagainst.
The ends B and D of the case, in lieu of being hinged as described and shewn, may,
of course, be made entirely removable from the other portions of the case, if
desired.
Plates & of the ordinary character for the purpose, may be carried in guides at the
opposite sides of the portion D of the case, to fit up around the rear side of the hind
axle and hub, respectively.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, we declare that what we claim,
is:-
1. In a gear case, for a cycle, having tubular portions such as A, through
which the upper and lower lengths of the chain pass, a hinder portion constructed
to be opened in a manner which admits of its clearing the framing of the machine
as it is moved sideways, substantially as described.
2. In a gear case, for a cycle, having tubular portions such as A, through
which the upper and lower lengths of the chain pass, a hinder portion constructed
to be opened in a manner which admits of its clearing the framing of the machine
as it is moved sideways, in combination with a forward portion of the case
constructed to be opened so that, when the hinder portion has been moved clear
of the framing of the machine, the case may be drawn endways to clear it entirely
from the machine, substantially as described.
3. In a gear case, for a cycle, having tabular portions such as A, through which
the upper and lower lengths of the chain pass, the combination of a hinged or
removable hinder end such as D), with a U-piece such as E, which closes in a
portion of the forward side of the driven chain wheel and the yoke of which is
fitted between the tubular portions of the case, the said U-piece being capable of
being moved to allow of the hinder end of the case being drawn sideways clear of the
machine, substantially as described.
4. In a gear case, for a cycle, having tubular portions such as A, through which
the upper and lower lengths of the chain pass, a hinged or removable hinder end such
as D, a U-piece such as E, which closes in a portion of the forward side of the driven
chain wheel and the yoke of which is fitted between the Lubular portions of the case,
the said U-piece being capable of being moved to allow of the hinder end of the case
being drawn sideways clear of the machine, in combination with a hinged or
removable forward end such as B, by means of which the forward portion of the case

page_text: may be opened so that, when the hinder portion has been moved sideways clear of the
framing of the machine, the case may be drawn endways to clear it from the machine,
substantially as described.
5. The combination and arrangement of parts constituting a complete gear case for
a cycle, substantially as described and shewn by the drawings herewith.
1007
CHID VIM
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicants.