Improved Detachable Outer Tyre for Wheels of Mowing Machines and other Vehicles.
Year: 1896

page_text: Improved Detachable Outer Tyre for Wheels of Mowing Machines
and other Vehicles.
I, JOHN CURTIS, of Botley Works, in the City and County of Oxford, Engineer,
do hereby declare the nature of this invention to be as follows:
My present application for Letters Patent has reference to a detachable tyre for
wheels of mowing machines; traction engines, and other heavy vehicles having
wheels of similar construction. Mowing machines, reapers, traction engines and
the like are usually provided with wheels furnished with cogs, dugs or ribs pro-
jecting from the surface of the tyre outwards in order to give the wheel an
increased grip on soft ground enabling it to act satisfactorily on the surface of
an ordinary field. When a vehicle or machine possessing such wheels is required
to travel upon a hard roadway the cogs or drugs are very liable to be damaged
thereby and serious injury to the wheel may result. My invention is designed to
obviate this drawback in the following manner:
Around the wheel tyre with projections as aforesaid, I place an outer tyre
possessing inwardly directed projections of such dimensions and so placed as to
approximately fill the spaces between the cogs or dugs of the wheel and thus
afford the requisite support and convert the wheel into a smooth tyred wheel.
My outer tyre is made removable and may be formed in two or more segments
as convenient suitably attached to each other and to the wheel. The manner of
attachment I at present prefer is by means of three small pins and keys but it is
obvious that other methods of attachment may be employed if found desirable.
My removable outer tyre may be made entirely of metal or of a metal ring with
wooden blocks attached thereto or of other materials. In addition to the protection
of the wheel against damage, by the use of my invention any injury to the highway
by reason of the projections on the wheels of the machine is also avoided and the
action of the wheel upon the road rendered similar to that of any other smooth
tyred wheel

page_text: COMPLETE SPECIFICATION.
Improved Detachable Outer Tyre for Wheels of Mowing Machines
and other Vehicles.
I, JOHN CURTIS, of Botley Works, in the City and County of Oxford, Engineer,
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:-
My present application for Letters Patent has reference to a detachable tyre for
wheels of mowing machines, traction engines, and other heavy vehicles having
wheels of similar construction. Mowing machines, reapers, traction engines and
the like are usually provided with wheels furnished with cogs, dugs or ribs pro-
jecting from the surface of the tyre outwards in order to give the wheel an
increased grip on soft ground enabling it to act satisfactorily on the surface of
an ordinary field. When a vehicle or machine possessing such wheels is required
to travel upon a hard roadway the cogs or dugs are very liable to be damaged
thereby and serious injury to the wheel may result. My invention is designed to
obviate this drawback in the following manner:
Around the wheel tyre with projections as aforesaid, I place an outer tyre
possessing inwardly directed projections of such dimensions and so placed as to
approximately fill the spaces between the cogs or dugs of the wheel and thus
afford the requisite support and convert the wheel into a smooth tyred wheel.
My outer tyre is made removable and may be formed in two or more segments
as convenient suitably attached to each other and to the wheel. The manner of
attachment I at present prefer is by means of three small pins and keys but it is
obvious that other methods of attachment may be employed if found desirable.
My removable outer tyre may be made entirely of metal or of a metal ring with
wooden blocks attached thereto or of other materials. In addition to the protection
of the wheel against damage, by the use of my invention any injury to the highway
by reason of the projections on the wheels of the machine is also avoided and the
action of the wheel upon the road rendered similar to that of any other smooth
tyred wheel.
Referring to the accompanying drawings:-
Figure 1 shows an elevation of a wheel with the protecting device applied to a
portion of the wheel tyre.
Figure 2 is an end view of Figure 1 looking to the left.
Figure 3 is a view of the inside of one of the segments of the outer protector,
and
Figure 4 is a side view of the same.
In these drawings A represents the wheel tyre, B the spokes and C the hub.
a indicates the cogs or projection on the outside of the aforesaid tyre, and 6 bolt
holes or equivalent means for securing the segments of the tyre protector. The
protector. segments E F G H are applied to the wheel and bolted thereto at the
points b; when thus provided the outer surface of the wheel is smooth and can
do no damage to the road.
In the wheel shown in Figure 1 my apparatus is designed in six segments but
I do not limit myself to this particular number as a greater or lesser number of
divisions may be adopted as found most convenient for the special circumstances
of the case.

page_text: 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. A wheel for mowing machines and the like provided with a segmental detach-
able tyre having its outer or convex side smooth and its inner or concave side
formed with depressions corresponding to the cogs or projections upon the said
wheel substantially as described.
2. A detachable segmental tyre cover for the wheels of mowing machines and
other vehicles substantially as and for the purposes described and illustrated in
the accompanying drawings.
1007
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.
Patent Agents for the Applicant.
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester and Birmingham.
Patent Agents for the Applicant.