IMPROVEMENTS IN TRICYCLES, BICYCLES & SIMILAR MACHINES
Year: 1885

page_text: I JOHN CHESHIRE 280 Bridge Street West Hockley Birmingham Machinist
do hereby declare the nature of my invention for IMPROVEMENTS IN TRICYCLES,
BICYCLES & SIMILAR MACHINES to be as follows:-
This invention consists in the attachment to Tricycles Bicycles and other
Machines of an endless or Archimedean Screw as an auxiliary in the propulsion
of such Machines up Hills or Inclines without using more force or power than
that required to propel them on a plane or level surface.
With this view a Shaft having a small bevilled wheel attached to one end is
affixed to and worked by a large bevilled wheel, the other end having an endless
Screw attached thereto; This Screw acts upon a Cogged Wheel attached to the
Pedal Shaft.
The back of the Cogged Wheel is a Chain Wheel running on to a similar but
smaller Wheel at back of the large Bevilled. Wheel.
Attached to this is a forked Lever by which the large Wheel is thrown in or
out of gear and at the extreme end of the Shaft and above the bevilled Wheel
affixed thereto is a handle by pressing which the Screw is lifted from the Cogged
Wheel attached to the Pedal Shaft and remains disconnected until thrown into gear
when required by the forked Lever attached to the large bevilled Wheel at the
same time lifting the handle attached to the aforementioned Shaft.
Dated thin 21at day of Doomben 1001.

page_text: I JOHN CHESHIRE of No. 280, Bridge Street West, Birmingham, in the County
of Warwick, Machinist, do hereby declare the nature of my invention for IMPROVE-
MENTS IN BICYCLES, TRICYCLES, AND SIMILAR MACHINES, and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement:-
This Invention consists in the attachment to Bicycles, Tricycles, and similar
machines, of an endless or Archimedian Screw as an auxiliary power to be used in
the propulsion of the aforesaid machines up hills or inclines, whereby they may be
propelled up said hills or inclines with the same expenditure of manual power or
force as is employed to propel the said machines along a plane or level.
•
These improvements can be attached to Tricycles, etc., in various ways, as may be
desired; and the attachment of the screw may be upon the pedal shaft, or upon the
driving axle or driving wheel-or may. be arranged so as to be intermediate, and
affixed to the backbone or framing of the aforesaid machine or machines in such
manner that the screw shall be the medium of transfer of power from the pedal
or power shaft or lever actuated by the person or persons propelling said machine
or machines.
According to one arrangement I attach the worm or screw to one end of a
spindle carrying at the other end a bevil or cogged wheel. At the back of a
cogged or bevil wheel is a chain wheel, which engages a chain, gearing into
a similar chain wheel attached to the main driving or travelling wheel.
The cogged
and chain wheel are actuated by the pedal shaft by means of the worm or endless
screw on the shaft driven by a small helicloidal pinion receiving motion from a
larger cogged or bevil wheel, which may be attached direct to pedal shaft, or
receive motion by means of an intermediate chain, driven by a chain wheel on
pedal shaft. The said chain wheel may be arranged to be disengaged by means of
a clutch, or the bevil or driving wheel may be disengaged by means of a clutch,
by a suitable fork lever in convenient position to allow of the Screw-driving
arrangement to be thrown out of gear when not required for use. According to
another arrangement for disengaging, I arrange a lever to disengage the screw and
screw (or worm-) wheel by lifting the worm or screw out of gear, or vice-versa.
This lever has a cam or incline formed thereon; or I may use a quick-thread screw
upon a spindle carrying the end of screw or wheel-shaft before-mentioned, and
having a handle or lever so arranged as to facilitate the rapid throwing in and out
of gear the said worm (or endless screw) and wheel employed for actuating the
driving wheel of aforesaid machine or machines.
In order that my invention may be more clearly understood, I will proceed to
describe the same, having reference to the accompanying drawings.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 and fig. 4 represent the first arrangement set forth in my improvements
in Bicycles Tricycles and similar machines.
Figs. 2 and 5, 3 and 6, and 7 and 8 represent various arrangements for putting
my invention into practice. The corresponding letters represent similar parts in

page_text: Fig. 1 is a side view of an ordinary Tricycle; a is the driving and travelling
wheel, b the pedal shaft, c bevil wheel attached thereto, and geared into and driving
pinion & on shaft & carrying worm or endless screw e; e gears into a worm wheel f,
which is attached to a spindle carrying chain driving wheel g, into which gears
chain g³, gearing into chain wheel g', attached to driving or travelling wheel a; lis
a hand lever for disengaging the bevil wheel by means of any suitable clutch, so
that the pedal shaft can be free at will. A slip is also provided in connection with
the driving chain wheel g¹ and travelling wheel a. When the screw gear is in
action it will be apparent that the machine cannot travel backward without
operating the screw, thus preventing the machine from running back when on an
incline.
Fig. 4 is a plan of fig. 1.
Fig. 2 represents part of a Tricycle showing that portion of the frame h which
is necessary for attaching the fixing to carry my improvements before-mentioned.
a is the travelling wheel, 6 the pedal shaft, g chain wheel attached thereto, and
carrying chain g³, which gears into chain wheel g₁ attached to bevil wheel c, which
gears into and drives pinion d on spindle d¹ carrying screw e, which drives wheel f;
to the spindle of f is attached a chain wheel g² carrying chain gearing into
chain wheel g' which is attached to driving wheel a by means of a slip clutch; is
a spindle arranged to lift the screw e out of gear from its wheel f to allow of the
apparatus to be thrown out of gear as desired.
Fig. 5 is a plan of fig. 2, and shows the arrangement of parts, the letters having
reference to similar parts in fig. 2.
Fig. 3 shows the intermediate chain wheel g₁ removed, and the chain 95 and
wheel g removed, and the screw e carried forward to the wheel f which is
attached to wheel a; the hand lever i is fitted with a stop quadrant for retaining
the said lever in position when pinion d is thrown in or out of gear with
wheel c.
Fig. 6 is a plan of fig. 3, and similar letters indicate similar parts in fig. 3.
Fig. 7 shows another and a simpler arrangement, which may be employed in
carrying out my invention. h is the main frame of a Tricycle, 6 the pedal shaft,
e the worm or endless screw, gearing into and driving wheel f, attached to shaft d¹
to which is attached a mitre wheel de fitted with a clutch, to which is geared a
lever d³ for disengaging the wheels when required. I may also disengage the
screw e, or screw wheel f, in place of disengaging the nitre wheel d², which
gears into a similar wheel d° attached to wheel d, or I may arrange wheels of
different speed to those indicated.
Fig. 8 is an end view of fig. 7 and the letters indicate similar parts in fig. 7
having reference thereto.
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.-The application of an endless or Archimedian screw for the propulsion of
Bicycles, Tricycles, or vehicles propelled by the hands or feet, substantially as
herein described and set forth.
2. The combination of arrangements employing the screw for driving Bicycles,
Tricycles, and similar machines up hills or inclines, baving reference to the
figs. 1 to 8 in the accompanying drawings, substantially as herein set forth and
described.
Dated this Twenty-ninth day of September 1885.