Combination Metal Tyre and Rim for the Wheels of Bicycles and other Light Vehicles.
Year: 1897

page_text: Date of Application, 18th Mar., 1897
Complete Specification Left, 30th Sept., 1897-Accepted, 4th Dec., 1897
PROVISIONAL SPECIFICATION.
Combination Metal Tyre and Rim for the Wheels of Bicycles and
other Light Vehicles.
I, WILLIAM HAMILTON of South Bend in the County of St. Joseph, Indiana,
U.S.A., Mechanic, do hereby declare the nature of this invention to be as
follows:-
The combination wheel tyre and rim of this invention is formed by rolling a
semitubular sheet of metal with ogee shaped sides and in circular form with lap
welded ends to form a continuous gutter shaped wheel rim having outwardly turned
rim flanges, a web section, side bows and an outwardly convex tread section of
sufficient width to secure the required degree of strength and elasticity and flexibility
answering the requirements of a wheel fitted with a rubber cushion tyre. The tread
of the wheel is cross ribbed or corrugated, or a suitable attachment may be provided
which will prevent slipping. The rim flanges are preferably made thicker than the
sides and web to receive the spokes to be attached by nipples. The web and rim
sections are preferably gored or slit at suitable intervals to allow the outer sides of
the sheet metal to be drawn together, forming ogee curves and bringing the web
sections together with perforations opposite one another for uniting the webs by
screws.
THOMAS R. SHILLITO
89 Chancery Lane London W.C.
Agent for the Applicant.
Combination Metal Tyre and Rim for the Wheels of Bicycles and
other Light Vehicles.
I, WILLIAM HAMILTON of South Bend, in the County of St. Joseph, Indiana,
U.S.A., Mechanic, 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 :—
The combination metal tyre and rim of this invention is designed to obviate the
use of air cushion tyres upon wheel rims, and substitute therefor a metal tyre that is
elastic and not liable to be punctured.
In the accompanying drawing
Fig. 1 is a side elevation of a wheel to which the invention is applied and
Fig. 2 a perspective view of a fragment of the metal tyre and rim drawn to an
anlargad seale

page_text: A semitubular sheet of metal, preferably steel, is rolled with ogee shaped sides and
in circular form with lap welded ends of suitable dimensions to form a continuous
gutter shaped wheel rim A having outwardly turned rim flanges A¹, a web section A²,
side bows A³, and an outwardly convex tread section A4, of sufficient width to secure
the required degree of strength and elasticity.
'
The rim flanges A¹ are preferably made thicker than the sides and web to receive
perforations for the attachinent of spokes B by means of nipples C passed through
the perforations of the flanges, and the web sections A² of the wheel rim and tyre
are also perforated at a to receive screws D which firmly secure the web sections
together. By use of this rim the head of nipples C is on outer surface of said rim
flange, readily accessible.
The web sections and rim sections are preferably gored or slit at suitable
intervals A5 to allow the outer sides of the sheet metal to be drawn together, forming
reverse ogee curves and bringing the web sections A² together with their perforations a
opposite each other to be securely united by the screws D and with the rim flanges A¹
held close together, the spokes B being secured alternately to each of said rim
flanges.
The ogee outline of the sides, web, and rim flanges gives great strength to the
wheel rim structure, each side giving a double spring motion, the adjacent inner or
web swells and the top side swells being the fundamental sources of a quadruple
spring motion at one time.
The tread of the wheel may be ribbed, corrugated, or cross ribbed, to firmly grip
the ground and prevent slipping, or any suitable surface may be formed or attached
thereto which will serve this purpose. The material or metal of the tread may be
slightly thickened to secure greater strength at this point.
The spokes B are secured to a hub E in any well known manner and a wheel thus
formed will have great strength combined with the elasticity and resiliency of a
rubber tyre, while it is entirely free from the danger of being cut or punctured.
It is evident that wheels for all light road vehicles may be thus formed, which will
be greatly superior to the wheels provided with a composite rim and tyre heretofore
used.
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
A combined wheel tyre and rim formed of an end welded sheet of metal drawn
together and secured at its sides to form a hollow wheel tube with its edges turned
apart to provide inner spoke flanges at each side and with its tread or outer
peripheral surface roughened, ribbed, or corrugated transversely to prevent slipping,
substantially as described and shewn.
Dated this 30th day of Sentember 1807
THOMAS R. SHILLITO
89 Chancery Lane London W.C.
Agent for the Applicant.