Improvements in the Construction of Hollow Rims for the Wheels of Cycles and other Vehicles.
Year: 1893

page_text: Date of Application, 21st Jan., 1893
Complete Specification Left; 16th Mar., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Hollow Rims for the Wheels
of Cycles and other Vehicles.
I WILLIAM YATES LAMBERT of 254 Crookesmoor Road Sheffield in the
County of York Mechanical Engineer do hereby declare the nature of my
invention to be as follows :-
My present invention relates to improvements upon an invention described in a
Patent numbered 20666 of 1891 which is for the construction of the hollow rims of
the wheels of cycles and other vehicles and in the Specification and drawings of
said Patent it will be noted that the outside part of the hollow rim is rolled or
formed out of one piece of metal and the U or D shaped internal support is rolled
or otherwise formed separately and subsequently inserted in the hollow of the said
rim. I now find by experience in manufacture that it is more economical and easier
to manufacture the said support together with the greater portion of the rest of the
hollow rim out of one piece of metal in such a manner as to leave the upper part of
the internal U or channel support open and I subsequently roll a ring of curved or
flat metal which I braze or otherwise secure to the said upper part thus completing
the hollow rim that is to say
I take a piece or strip of metal of suitable length and width and by means of
rollers or other mechanism I roll or form the same into a corrugated or double
channel I then by means of further rollers or mechanism bend over the sides of said
channel so that the edges overlap or butt each other and are pressed upon the
underside of the U or channel shaped internal support where they are brazed or
otherwise secured together and in the case of a butt joint are brazed or secured to
the underside of the U or channel shaped internal support.
The said strip of channel form is subsequently formed into a hoop or ring and
the ends brazed or otherwise secured together.
I then roll a piece or strip of metal of suitable length and width into a hoop of
channel or curved form in cross section and fit the same around the upper part
of internal support with its sides brazed or otherwise suitably secured to the upper
parts of the hollow rim at either side of the said channel internal support.
Dated this 20th day of January 1893.
H. F. BOUGHTON, M.I. Mech. E.,
Sheffield, Agent.
COMPLETE SPECIFICATION.
Improvements in the Construction of Hollow Rims for the Wheels
of Cycles and other Vehicles.
I WILLIAM YATES LAMBERT of 254 Crookesmoor Road Sheffield in the
County of York, Mechanical Engineer do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:---
My present invention relates to improvements upon an invention described in a
Patent numbered 20666 of 1891, which is titled "Improvements in and relating to
the Wheels of Velocipedes and similar Vehicles," and in the Specification and
drawing of said Patent it will be noted that the outside part of the hollow rim is of
crescent form in cross section, and is formed out of one piece of metal, and that
the Ushaped piece is rolled or otherwise formed separately and is brazed or
otherwise secured within the crescent formed outer rim; I now however find by

page_text: experience in manufacture that it is more economical and easier to manufacture the
said or channel shaped support together or in one piece of metal, with the
greater portion of the outside or crescent.rim; and, in such a manner as to leave
the upper part of the internal Uor channel support open, and I subsequently roll
or form a ring of curved or flat metal in cross section which 1 braze or otherwise
secure to the said upper part of the Uor channel shape support and the crescent formed
rim thus completing my improved hollow.rim. By my present improvements a
triple thickness of metal is available where the heads of the spokes take a bearing.
The object of my invention is attained in the manner illustrated by the accom-
panying drawings, in which Fig. 1 is a cross sectional elevation of the form to which
I roll the greater part of the outer rim upon the first operation, and Fig. 2 is a
cross sectional elevation of the same after the second operation, Fig. 3 is a side
elevation drawn to. reduced scale of the hollow rim when formed to a circle
composed of Fig. 2. Fig. 4 is a cross section of a piece of metal which I roll into
a ring shown at Fig. 5, which latter is drawn to reduced scale. Eig. 6 is a cross
section of hollow rim with the metal ring shown at Figs. 4 and 5 attached, and
Fig. 7 is a side elevation of my improved hollow rim complete and drawn to reduced
scale.
Similar letters of reference denote corresponding parts in each view. Referring
to Figs. 1, 2 and 3 I take a strip of metal A, of suitable thickness, width, and
length, and roll it to the section shown at Fig. 1; that is to say with a U or
channel formed part a' and bent down sides a². These bent down sides a² I
subsequently bend upwards and braze or otherwise secure to the underside of the
U portion a as shown at Fig. 2. I then bend this tubular strip into the hoop form
shown at Fig. 3. Referring now to all the figures, in order to complete the rim, [
take a further strip of metal B which I preferably roll to a curved form in cross
section at the same time as I form it to a ring as shown at Fig 5, which I pass over
the rim A so that it rests upon and covers up the U or channel shaped part of rim,
when it is joined up and brazed thereto as shown at Fig. 6, thereby forming my
complete improved rim as shown at Fig. 7. It will be obvious that where the
parts a overlap and are brazed to the underpart of the U or channel shaped
portion a', that a triple thickness of metal is available as a bearing for the head
parts of the spokes which bear therein in the usual manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. Constructing hollow rims for the wheels of cycles or other vehicles with
a U or channel central part a' made in one with the greater part of said rim in
combination with a ring B of flat or curved form in cross section and attached to
the remainder of rim substantially as described and illustrated in the accompanying
drawings.
895.
H. F. BOUGHTON, M.I. Mech. E.,
16, Commercial Street, Sheffield, Agent.