Improvements in the Wheels of Bicycles, Tricycles, and other Vehicles.
Year: 1890

page_text: Date of Application, 2nd Dec., 1890
Complete Specification Left. 2nd Sept., 1891-Accepted, 7th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Wheels of Bicycles, Tricycles, and other
Vehicles.
I JOHN NEAL SEDGLEY of Number 2 London Road Leicester in the County
of Leicester Cabinet Maker do hereby declare the nature of this invention to be
as follows:-
For better securing of tyres to the rims of the wheels of bicycles tricycles and
similar vehicles and for the easy removal and refixing of the same for repairs and
other purposes. My invention does this in the following simple and effective
manner viz. I construct the inside of the ring of the tyre of solid rubber or other
material of the desired size in the shape of a hollow or bend or dovetailed form on
the two outer edges or sides. The corresponding sides of the inner part of the
rim, I construct of a reverse shape to fit into the said outer hollow edges of the
said tyre, and by means of screws from the outside of the aforesaid rim on both
sides, which when screwed up act on the inner side of the inner rim forcing the said
inner rim into the hollows on both sides of the said tyre before described, thus
holding the tyre all round the wheel in a dovetail or vice or grip without the aid
of cement or other substances, so that the said tyre can be taken out at any time
by any inexperienced person by the simple means of unscrewing the screws, it can
then be replaced and the screws screwed up on both sides, and it is then again
securely and firmly held in its place.
Dated this First day of December 1800
COMPLETE SPECIFICATION.
Improvements in the Wheels of Bicycles, Tricycles, and other
Vehicles.
1, JOHN NEAL SEDGLEY of No. 2 London Road Leicester in the County
of Leicester 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 has for its object a means for the better securing of tyres to the
rims of the wheels of bicycles, tricycles and other vehicles and for the easy removal
and refixing of the same, for repairs and other purposes.
This my invention is accomplished in a simple and effective manner reference
being made to the sheet of drawings annexed in which:
Figure 1 is a cross plan view of the rim and special shaped tyre adapted to open
at bottom, and means for securing the same, the left hand screw is shown not
tightened up.
Figure represents in plan the ring or cover open at bottom to enclose
air tube.
Figure 3, is a cut off side view of the ring or cover enclosing the air tube, with
dovetail for securing the same.
Figure 4, is an upper view of a wheel rim or felloe, the inner face of the rim E
having apertures on line xx in which are placed the grips C, adapted to receive
the dovetail of the tyre clamped by the screws D, the dovetail groove F being
made to lock the end of the dovetail by forcing the tyre in the direction of the
groove.
Figure 5 is a cross section of the wheel rim showing an alternative in the grips C,
which in this case is made in one piece to the form C C, having a slot in the centre

page_text: thereof, through which and also through the bottom of the outer rim is passed the
screw D.
When the dovetail of the tyre has been pressed into the grip, full
line C. C, by turning the nut d', in the right direction the sides of the grip is
brought inwards and downwards and gradually tightens on the hollow sides of the
dovetail.
Figure 6 Sheet 2 is a perspective view of Figure 4, and Figure 7 is a cross
section of the same.
To carry out my invention I make the inside of the cover or tyre A of solid
rubber and canvas or other material a of any desired size and preferably of the
shape as seen in Figure 2, with a portion of the dovetail a', hollowed out at a² on
the two outer edges or sides B. The corresponding sides or movable parts or
grips C fitted in the outer rim E are made of a reverse shape C, Figures 1, 5,
6 and 7, and conforms to the hollow edges of the special shaped cover or tyre A.
The screws D which pass through the hollow section on both sides of the rim E
upon being tightened up cause the tongued inner faces of the dovetail a² to fit
together, and the tyre G, or ring or cover A is held secure. The screw D may as
before explained in reference to Figure 5 be put in the bottom of the rim, or from
the sides and acting on the inner sides of the vice or grips C. The said dovetails
are arranged at intervals so that they will fit into their respective slots or apertures
all round the rim of the wheel at certain distances, the outer hollowed parts of the
dovetails may be made of any resilient material other than rubber, or coated with
canvas, to allow the tyre to be more firmly held by the vice or grips C, without the
aid of cement or other substances. So that the said tyre can be taken out at any
time by any inexperienced person by the simple means of unscrewing the screw or
screws D. The tyre can then be easily replaced and the screws tightened, when
the tyre is securely and firmly held in its place, and wheel felloes of vehicles or
cycles can have means provided such as the dovetail groove F Figure 4 so that
when each of the dovetails a', all round the wheel have been pressed into the inner
rim; by moving the tyre in the direction of the slot or groove F the dovetail will
become locked therein. It will be obvious that other modifications may be made
in connection with the construction of the outer and inner rims, such as for instance,
in wood felloes, by arranging a movable inner part such as C, working in a
hollowed out felloe, and screws such as D which work in a nut fitted in a screwed
plate in the movable inner rim without departing from the essential principles of
this invention.
It will be well understood that this invention applies also to cushion tyres, as well
as pneumatic. The ring or cover A in this instance being solid, and the dovetail also,
not divided as the cover required to enclose an air tube.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The securing of cushion tyres to the wheels of bicycles, tricycles, and other
similar vehicles by the employment of a solid dovetail such as a', upon the under
side of the tyre adapted to fit in a corresponding recess in the rim or felloe, the
inner part of which is capable of adjustment thereto by screws to secure or release
the tyre.
2. The securing of tyres to the rims or felloes of wheels of bicycles, tricycles
and similar vehicles by enclosing an air tube in a ring or cover such as A adapted
to open on its two outer edges or sides B which is in the form of a dovetail
projection such as a', to fit in corresponding shaped recesses in the rim or
felloe.
3. The manner of making an outer cover or tyre such as A to open and close in
a dovetail such as a', "Figure 2."
4. A rim or felloe of a bicycle, tricycle or other vehicle wheel constructed so
that it shall compress the sides of a projection such as a', of the tyre, by screws
such as D.

page_text: 5. The herein described improvements in the wheels of bicycles, tricycles and
similar vehicles whereby the tyre is secured to the rim or felloe substantially in the
manner as herein described and set forth.
Dated this 31st day of August 1891.
66
WILLIAM BESTWICK MAXFIELD,
The Central" Patent Office, 19, Bowling Green Street, Leicester,
Applicant's Agent.