Improvements in the Construction of Cycles.
Year: 1892

page_text: Date of Application, 1st Feb., 1892
Complete Specification Left, 1st Nov., 1892-Accepted, 1st Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Cycles.
JOHN POLLITT, Cycle Manufacturer 43 Lower Mosley Street Manchester in
the County of Lancashire do hereby declare the nature of this invention to be as
follows:-
The first improvement relates to a method of steering those tricycles which have
a single back driving wheel and consists of a method of connecting the 2 front,
steering wheels by means of a "parallel rule "joint, the axis of rotation being the
steering tubes or studs connected to one side of each wheel and working in
independent centres connected to the frame, said steering tubes being fitted with
adjustable handle bars to regulate the height and distance between the handles, by
this means a perfectly open front is secured to the machine. Another portion of
my invention relates to the construction of the hubs of the wheels of these machines
which are made by letting in and suitably fastening rings of metal within a tube of
suitable length the spokes of the wheels piercing alike the outer tube and inner ring
thus obviating the necessity of having outside flanges as heretofore constructed, or
the inner ring may be dispensed with and the spokes hooked through the tube for
tangent wheels.
Dated this 30th day of Jonuerz 1009
JOHN POLLITT.
COMPLETE SPECIFICATION.
Improvements in the Construction of Cycles.
I, JOHN POLLITT of The Central Cycle Works 43 Lower Mosley Street,
Manchester, Cycle 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:-
This invention relates to an improved construction of open fronted, front steering
tricycles or other cycles engaging two or more tracks and consists of the back
wheel or wheels being driven by any ordinary method, the frame extending
forward from the seat pillar by means of a tube which terminates with a cross tube
fixed Twise thereto;-at each end of this cross tube is attached in an almost
vertical position a tubular socket fitted with or without the usual ball races at each
end and through which the steering tube passes :-from the lower portion of each
of these steering tubes projecting from the lower portion of the socket tube a stud
projects in an horizontal position and which constitute the spindles upon which the
front wheels revolve-likewise projecting from this same lower portion of the
steering tubes are cranks at right angles to the aforementioned hub studs or
spindles-these two cranks (which must be of equal lengths) are connected together
by a rod "parallel rule wise" so that the hub studs or spindles shall have their
respective axis lying in the same straight line. Each of the above mentioned
steering tubes (which have an angular motion within the socket tubes) have fitted
to their top portion a separate single handle bar which moves freely up and down
the inside of the steering tube, this with the possible angular motion of the handle
bar admitting of dual adjustments both as respects height and distance apart of the
separate handles, the whole desired adjustment being secured by means of the usual
screw pinch grip device commonly employed for this purpose.
By a similar application of a T shaped piece to the steering tube of an ordinary
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page_text: bicycle, and fitted with separate handle bars at each end similar advantages will be
secured for this type of machine.
Another portion of my invention relates to the construction of the hubs of cycle
wheels and consists of their construction from a simple suitable length of tube-
preferentially steel-and of such a diameter after being turned up as true as
practical to admit the ordinary ball race cups at each end & which may be fastened
therein by any ordinary means-in or on occasions where the spokes of the wheel
are required to run tangentially simple holes are drilled around the hub tube &
immediately behind the ball race cups at each end into which hook ended spokes
engage with their relative holes, the other ends of the spokes being fastened and
adjusted to the rim of the wheel by means of the ordinary screw nipples &c. When
however the spokes of the wheels are direct i.e. run radially a ring of metal or
other suitable material is fitted within the hub tube and immediately behind each of
the ball race cups at each end-these rings having holes drilled and screw tapped
registering with those already formed at each end of the hub & through which the
screwed ends of the spokes pass the ring thus forming a compound nut to the spokes
the whole being held rigidly in their respective positions.
In order to facilitate the accurate drilling of the holes at each end of the hub
tube when the spokes are meant to be direct, I turn the outside of the hub tube
where the holes are desired slightly bevil so that when the spokes are in position
they shall lie at right angles to such bevil.
In order to elucidate and make clear my invention I make reference to the
accompanying drawings.
Fig. 1. is a plan of a tricycle (-A) being the clear open space Nos. 1, 1, are
the steering sockets at each end of the cross tube Nos. 2, 2, and to which at their
lower portions are fitted with bearing stud or spindles No. 4 and cranks Nos. 5, 5,
which are connected together parallel rule wise by rod No. 6.
Fig. 2. illustrates the front view of the tricycle in which (-A) is the open
front space No. 1 the bearing stud No. 2 the steering socket tube: No. 3 the
steering tube and No. 4 the handle bar the dotted lines shewing the radial
adjustment.
Fig. 3. is the same construction of handle bars adapted to an ordinary bicycle.
Fig. 4. is part elevation and part section of the completed hub No. 1 is the
tube No. 2 the ball race cup: No. 3 the annular metal ring or compound nut to
the spokes No. 4.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1st. The construction of a clear open fronted front steering dual tracked cycle each
wheel having a seperate steering tube and socket, the pair being connected parallel
rule wise in combination substantially as herein set forth and described.
2nd. The construction and arrangement of the steering tube and handle bars
admitting of the duplex vertical and radial adjustments as herein described and for
cycles generally.
3rd. The construction of the hubs of cycle wheels substantially as herein
described.
4th. The use and construction of the annular ring as a compound nut in goods of
this nature.
Dated this 21st day of October 1900
JOHN POLLITT.