Year: 1885

page_text: We WILLIAM BOWN of Summer Lane, Birmingham, in the county of Warwick,
Manufacturer and ALFRED THOMAS ANDREWS of 25 Charlotte Street Parade
Birmingham, aforesaid, Machinist, do hereby declare the nature of this invention
to be as follows :—
Our improvements relate to the construction of hollow rims for wheels of
velocipedes and carriages and consist in taking a strip of steel or metal of the
required length and width to form the complete rim a strengthening rib or ribs or
a projection or projections being rolled or otherwise formed on such strips of steel
or other metal when desired for receiving the heads or nuts of the spokes of the
wheels, and by suitable drawing through tools in connection with a draw bench or
rolls or other convenient appliances we so form or shape the said strip that when
complete from the said tools in its transverse section the rim is divided into three
divisions or compartments either angular or curvilinear, the upper surface being
suitably shaped for securing the rubber tyre-If desired the parts or edges in
contact may be further secured in position by brazing-The rim is then completed by
being bent into the circular form required and connected at the ends in the usual
manner-Rims thus manufactured will be found lighter and more rigid than those
of ordinary construction.
G. F. REDFERN,
Agent for the Applicants.

page_text: Improvements in Rims of Wheels for Velocipedes and Carriages.
We WILLIAM BOWN, of Summer Lane, Birmingham, in the county of Warwick,
Manufacturer, and ALFRED THOMAS ANDREWS of 25 Charlotte Street Parade,
Birmingham aforesaid, Machinist 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:—
Our improvements relate to the construction of hollow rims for wheels of
Velocipedes and Carriages, and consist in taking a strip of steel or metal of the
required length and width to form the complete rim, a strengthening rib or ribs or
a projection or projections by preference being rolled or otherwise formed on such
strips of steel or other metal when desired for receiving the heads or nuts of the
spokes of the wheels, and by suitable dies and drawing through tools in connection
with a draw bench or rolls or other convenient appliances we so form or shape the
said strip that when complete from the said tools, the rim is divided into three
divisions or compartments either angular or curvilinear, the outer edges of the strip
being turned inwards (by the drawing through processes before mentioned) and
abutting against the insides or walls of the rim, two other bent or angled portions
coming together in the middle of the upper surface of the rim, the parts or edges in
contact being by preference further secured in position by brazing. The rim is
completed by being bent into the circular form required and connected by brazing
at the ends in the usual manner. Rims thus manufactured will be found lighter
and more rigid than those of ordinary construction as the edges and bent or angled
portions which are in contact and brazed together will form great support and
resist all strain from every direction.
But as our invention will be best understood by aid of the Drawings hereunto
annexed we will proceed to describe the same reference being made to the figures
and letters marked thereon. Fig. 1 represents in transverse section a strip of steel
or metal with the rib or enlarged part A in the centre for receiving the heads or
nuts of the spokes of the wheel. Fig. 2 is a transverse section of the strip, partly
shaped by being drawn through suitable dies and tools in connection with a draw
bench or other convenient means which are well understood by workmen
accustomed to such operations, and Fig. 3 is a transverse section of the rim drawn
or formed into the complete shape required from which it will be seen that the
edges A. B, abut against the inner sides of the rim and that the bent or angled
parts CD, are brought together forming the top of the rim and seat for the rubber
tyre E to be secured to-the parts in contact at A B C D being by preference
brazed to firmly connect and secure them together. By this construction of hollow
rim we obtain increased strength as all vertical or side way strain is effectually
resisted and a much lighter rim is produced. Fig. 4 represents a transverse section
of rim being a modification of Fig. 3 to the extent that the top is semi-circular in
shape so that when preferred a circular rubber F may be used as shown.

page_text: Having now described our invention we wish it understood that what we claim
and desire protected by Letters Patent is-
The construction of hollow Rims for Velocipedes and Carriages substantially as
herein described and exhibited-whereby the edges and sides and the bent or
angled parts of the Rim are brought in contact and brazed together affording great
strength and rigidity with increased lightness.