Improvements in Rims, suitable for Use in the Make Up of Cycle-wheels and other Wheels.
Year: 1893

page_text: Date of Application, 5th June, 1893
Complete Specification Left, 5th Mar., 1894-Accepted; 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Rims, suitable for Use in the Make Up of
Cycle-wheels and other Wheels.
I, EDWARD WARWICK, of Sheffield Works, Alma Street, Aston in the County
of Warwick, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention consists in the new manufacture hereinafter described whereby
the combination, arrangement, and amalgamation of the several parts, form and
constitute a new and original rim suitable for use in the make up of cycle-wheels,
and also suitable for use in the make up of the wheels of other vehicles.
In carrying out the first modification of my invention I take a strip of thin
sheet steel or other metal and pass it through suitable rolls so as to form a convex
outer face, on each side of such convex outer face is formed a corrugation, producing
a shoulder, each side is then carried upward (preferably in an angular direction)
to a suitable height, each side is then bent over and inwards forming right and left
hand rounded top corners, each side is then bent downwards in an angular
curvilineal direction a suitable distance and then bent so as to form right and left
hand corrugations, each side is then bent to meet the other, forming a concave
surface one side lapping over the other making a lap joint.
I next provide a bridge-plate consisting of a strip or plate of thin sheet metal
of a suitable width to slide and rest on the right and left hand shoulders formed
by the two corrugations; the bridge plate is then slidden with its under side faces
resting on the two shoulders and its upper central face resting against and
supporting the under side of the tubular lap-joint, the bridge piece is then secured
onto the shoulders and under the lap-joint by means of brazing or soldering thus
amalgamating the lap-joint of tube with bridge plate producing a treble thickness
of material to receive the ends and heads of wheel-spokes.
Circular rims would be made out of the tubular combination hereinbefore
described and the treble thickness pierced to, receive spokes, the spoke heads
resting on the upper face of tubular lap-joint; the lap-joint herein before described
has been the subject matter of a previous Patent No. 4597, year 1882, the specific
shape and configuration of the corrugated tube is not new.
What constitutes the novel and original part of the first modification of my
invention is the providing of a bridge-plate under the convex arch or crown
of rim tube so as to produce a treble thickness on to which the spoke-heads can
rest and bear.
By a second modification of my invention I provide the tubular part of the
configuration described in the first modification excepting that a central butt-joint
is provided in lieu of the patented lap-joint, the bridge-plate is secured on and
amalgamated with the shoulders and also brazed, soldered, or otherwise amalgamated
with the underside of butt-joint, in the manner described in relation to the
first modification, thus producing a double thickness of material to receive the
spoke heads in lieu of the treble thickness formed by bridge-plate and lap-joint of
first modification.
By a third modification of my invention 1 provide a tubular part of any outer
and inner configuration suitable for use as a rim-tube such rim-tube being provided
with shoulders or recesses to receive the bridge-plate, the joint of the rim-tube
being situated at any suitable part thereof, which may be central as described in
first modification but with a two-fold, three-fold, four-fold, or any desired thickness
of folded.lap joint, or which may be away from the centre either a butt-joint or; a

page_text: lap-joint in either case the bridge plate would take its bearing under the outer
convex surface of arch, such combination and arrangement of the bridge plate with
the arch of rim-tube constituting the essential part of my invention.
Dated this 1st day of June 1893.
!
COMPLETE SPECIFICATION.
Improvements in Rims, suitable for Use in the Make Up of
Cycle-wheels and other Wheels.
I EDWARD WARWICK of Sheffield Works Alma Street Aston in the County
of Warwick 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 consists in the new manufacture hereinafter described whereby
the combination arrangement and amalgamation of the several parts form, and
constitute a new and original rim suitable for use in the make up of cycle wheels,
and also suitable for use in the make up of the wheels of other vehicles.
In carrying out the first modification of my invention I take a strip of thin
sheet steel or other metal and pass it through suitable rolls so as to form a convex
outer face, on each side of such outer convex face is formed a corrugation,
producing a shoulder, each side is then carried upward (preferably in an angular
direction) to a suitable height, each side is then bent over and inwards forming
right and left hand rounded top corners, each side is then bent downwards in an
angular curvilineal direction a suitable distance and then bent so as to form right
and left hand corrugations, each side is then bent to meet the other, forming a
concave surface one side lapping over the other making a lap joint.
I next provide a bridge-plate consisting of a strip or plate of thin sheet metal
of a suitable width to slide and rest on the right and left hand shoulders formed by
the two corrugations; the bridge-plate is then slidden with its under side faces
resting on the two shoulders and its upper central face resting against and supporting
the under side of the tubular lap-joint, the bridge-piece is then secured on to the
shoulders and under the lap joint by means of brazing or soldering, thus amal-
gamating the lap-joint of tube with bridge-plate producing a treble thickness of
material to receive the ends and heads of wheel-spokes.
Circular rims would be made out of the tubular combination hereinbefore
described and the treble thickness pierced to receive spokes, the spoke heads resting
on the upper face of tubular lap-joint; the lap-joint herein before described has
been the subject matter of a previous Patent No. 4597, year 1882, the specific
shape and configuration of the corrugated tube is not new.
What constitutes the novel and original part of the first modification of my
invention is the providing of a bridge-plate under the convex arch or crown of
rim tube so as to produce a treble thickness on to which the spoke heads can rest
and bear.
By a second modification of my invention I provide the tubular part of the
configuration described in the first modification excepting that a central butt-joint
is provided in lieu of the patented lap-joint, the bridge-plate is secured on and
amalgamated with the shoulders, and also brazed, soldered, or otherwise amal-
gamated with the underside of butt-joint, in the manner described in relation to the

page_text: first modification, thus producing a double thickness of material to receive the..
spoke heads in lieu of the treble thickness formed by bridge-plate and lap-joint of
first modification.
•
By a third modification of my invention I provide tubular part of any outer
and inner configuration suitable for use as a rim-tube, such rim-tube being provided.
with shoulders or recesses to receive the bridge-plate, the joint of the rim-tube.
being situated at any suitable part thereof, which may be central as described in.
first modification but with a two-fold, three-fold, four-fold, or any desired
thickness of folded lap-joint, or which may be away from the centre either a butt-
joint, or a lap-joint-in either case the bridge plate would take its bearing under the
outer convex surface of arch such combination and arrangement of the bridge-
plate with the arch of rim-tube constituting the essential part of my invention.
I will now proceed to describe with reference to the accompanying drawings-
the manner in which the several modifications of my invention are constructed and
used.
Figure 1 represents a transverse section of first modification tubular part ready-
to receive the bridge-plate.
Figure 2 represents a transverse section of second modification tubular part ready
to receive the bridge-plate.
Figure 3 represents a transverse section of tubnlar part and bridge plate in
position ready for brazing to form the first modification.
Figure 4 represents a transverse section of second modification tubular part and,
bridge piece in position ready for brazing.
Figure 5 represents a tubular rim part and lap joint not suitable to receive the
bridge-plate.
In constructing the first modification of my invention I provide a tubular rim.
with a lap joint as shewn at Figure 1; I next provide the bridge-plate a and place
or slide it within the tubular rim to rest on the shoulders in the manner shewn at
Figure 3 and afterwards secure the bridge-plate to the shoulders b and to the
lapped joint by soldering, brazing, or other equivalent mechanical means, so as to
consolidate the hollow rim with the bridge-plate and produce a treble thickness of
material at as shewn at Figure 3 to receive the ends and heads of wheel-
spokes.
In constructing the second modification of my invention I provide a tubular rim
with a butt-joint as shewn at Figure 2, I next provide a bridge-plate a¹ and place
it or slide it within the tubular rim to rest on the shoulder in the manner shewn
at Figure 4 and afterwards secure the bridge-plate to the shoulders and to the-
butt-joint d by soldering, brazing, or other equivalent mechanical means, so as to
consolidate the hollow rim with the bridge-plate and produce a double thickness.
of material at d as shewn at Figure 4 to receive the ends and heads of wheel--
spokes.
In constructing the third modification of my invention I produce a rim-tube of
any outer and inner configuration suitable for use as a rim, such rim-tube being
provided with shoulders or recesses to receive the bridge-plate; I have not shewn
sections of rim tubes of third modification because I claim as part of my invention.
the use of any and every rim-tube now known or in use, or that may hereafter be
known and in use, each of such rim-tubes when separate forming no part of my
invention now described and claimed, but each of such rim-tubes when combined
with my bridge-plate in the manner described, forming and constituting a new
combination under the third modification.
I do not claim the rim-tube as shewn at Figure 1, or the rim-tube as shewn at
Figure 2, as original designs but as sections of rim-tubes suitable for use combined
with a bridge-plate.
The arrangement of securing the brazing-joints of bridge-plate to rim as shewn
at Figure 3 and at d Figure 4, permit of the spokes being connected down the
centre of rim and such arrangement is that usual in the make up of hollow-rim-
wheels, nevertheless in some cases the lap-joint or butt-joint may be made out of

page_text: centre and when so made would when combined with a bridge piece form part of
my invention as hereinbefore fully set forth.
The transverse section of bridge-plate a is shewn flat or straight, nevertheless I
in some cases make and use a bridge-plate flat for a small space at each brazing
juncture, the other surfaces being corrugated for increased strength.
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 1
claim is
1st. The making of a wheel-rim by the combination of a lap-jointed tubular part
as shewn at Figure 1, with a bridge-plate a as shewn at Figure 3, the bridge-plate
being brazed, soldered or otherwise consolidated with the tubular part to form a
treble thickness at c¹; as and for the purpose set forth.
2nd. The making of a wheel-rim by the combination of a butt-jointed tubular
part as shewn at Figure 2, with a bridge-plate a¹ as shewn at Figure 4, the bridge-
plate being brazed, soldered, or otherwise consolidated with the tubular part to
form a double thickness at d, as and for the purpose set forth.
3rd. The making of a wheel-rim by the combination of a tubular part of any
outer or inner configuration, with a bridge-plate of either straight or corrugated
transverse section, the joint of the rim-tube being situated at any suitable part
thereof, which may be central or which may be away from the centre; the point of
connection being a butt-joint or a lap-joint, the lap-joint having one fold, two folds,
three folds, or any desired number of folds, the bridge-plate taking a bearing under
the joint or intersection irrespective of the number of laps in the joint.
Dated this 25th day of November 1893.
Witness:
EDWARD WARWICK.
ALFRED WILLIAM TURNER,
Patent Agent (enrolled),
Cobden Buildings, Corporation Street, Birmingham.