Improvements in Tyre Levers or Instruments for the Removal of Flexible Tyres from the Rims of Cycle and similar Wheels.
Year: 1898

page_text: Date of Application, 9th Feb.,
1898
Complete Specification Left, 9th Nov., 1898-Accepted, 7th Jan., 1819
Improvements in Tyre Levers or Instruments for the Removal of
Flexible Tyres from the Rims of Cycle and similar Wheels.
FRANK ERNEST MOUNTFORD, of 44, Sycamore Road, Smethwick, near the City
of Birmingham, Traveller, and WILLIAM GEORGE CAUSER, of Booth Street, Hands-
worth, near the City of Birmingham, Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention relates to an improved form of lever instrument for the speedy
& safe removal of flexible tyres from the rims of cycle & similar wheels.
The special features of a tyre lever constructed according to our invention are
as follows;
A plain lever, one end of which is of convenient size & shape for grasping with
the hand, whilst the underside of the extension gradually widens out laterally &
then again narrows until it merges into the body of the lever & curving upwards
terminates at the other end in an inverted beak or hook from the dip of which the
upper portion of the lever body rises with a sharp curve and retiring falls gradually
towards the end first herein described.
The novelty of the invention consists in the combination, of a hooked lever,
rounded in every direction so that it shall not cut the flexible tyre when inserted
between it and the metal rim, in combination with a broad bearing surface, so
that when fulcrumed upon the metal rim for the purpose of removing the flexible
tyre the metal rim is not damaged thereby.
1000
FRANK ERNEST MOUNTFORD.
WILLIAM GEORGE CAUSER.
Improvements in Tyre Levers or Instruments for the Removal of
Flexible Tyres from the Rims of Cycle and similar Wheels.
FRANK ERNEST MOUNTFORD, of 44, Sycamore Road, Smethwick, near the City
of Birmingham, Traveller, and WILLIAM GEORGE CAUSER, of Booth Street, Hands-
worth, near the City of Birmingham, 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:-
This invention relates to an improved form of lever instrument for the speedy
and safe removal of flexible tyres from the rims of cycle and similar wheels.

page_text: The special features of a tyre lever constructed according to our invention are
as follows: A plain lever one end of which is of convenient size and shape for
grasping with the hand whilst the underside of the extension gradually widens
out laterally and then again narrows until it merges into the body of the lever,
and curving upwards terminates at the other end in an inverted beak or hook from
the dip of which the upper portion of the lever body rises with a sharp curve and
returning falls gradually towards the end first herein described.
The novelty of the invention consists in the combination of the hooked lever
rounded in every direction so that it does not cut the flexible tyre when inserted
between it and the metal rim, in combination with a broad bearing surface so that
when fulcrumed upon the metal rim for the purpose of removing the flexible
tyre the metal rim is not destroyed thereby.
The accompanying drawings Figures 1 to 6 illustrate generally the type of
lever above described; similar letters indicate similar parts in all the figures The
essential features are, the combination in one lever of:
venient for grasping with the hand, indicated by the letter a combined with a
-A portion. shaped con-
wide and flat or convex palm b (to distribute the pressure upon the rim of the wheel
when removing the tyre) terminating in an inverted beak or hook e from which
the upper surface of the lever rises in a sharp curve, approximating vertically to
the palm band turning again at & joins the portion a enclosing space sufficient at e
to admit of side pressure thereon from the thumb of the hand grasping the lever
when removing the tyre. All edges are rounded so that they shall not cut the tyre.
Figure 1 is a plan and Figure 2 an elevation of a lever constituted according
to our invention with an open body and top rib. Figures 3 and 4 similar views with
a plate body and Figures 5 and 6 similar views of a similar lever stamped from
sheet metal.
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:
-
First. A lever for removing flexible tyres, substantially as & for the purpose;
described and set forth.
Secondly. The combination in one lever of the various parts substantially as
described and set forth.
Dated this 8th day of Navanah
1000
FRANK ERNEST MOUNTFORD.
WILLIAM GEORGE CAUSER.