Improvements in the Manufacture of Metal Rings for Furniture Pulleys, and the like.
Year: 1897

page_text: Date of Application 20th Jan., 1897
Complete Specification Left, 19th Oct., 1897-Accepted, 20th Nov., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Metal Rings for Furniture
Pulleys, and the like.
We CHARLES ROCHOLL, Foreman, and THE WESTMINSTER MANUFACTURING
COMPANY LIMITED, Manufacturers, both of 29A Gillingham Street, Pimlico, London,
S.W., do hereby declare the nature of this invention to be as follows:-
This invention relates chiefly to the manufacture of those articles which, in the
furniture trade, are technically called "rings," and which are used partly for
ornamental purposes, and to prevent the splitting of the turned legs of furniture,
when pin castors are employed, but the invention also applies to the manufacture of
rings which may be used as the bearing surface for pulleys or wheels.
The "rings" for the purpose mentioned have hitherto been cast with an internal
flange against which the end of the leg rests, and the object of the present invention
is to produce such rings with an internal flange from metal tubing.
In carrying out this invention, a length is cut from a tube, and, at the point where
the internal flange is to be formed, a shallow groove is turned in the outer periphery
of the length of tube. The length of tube is then placed in suitable dies, and
pressure being applied to the ends, the tube is caused to bulge inwards at the
weakened part. The bulged part is then flattened down by the dies, and the internal
flange is complete. At the same time, an external bulge inay be produced, to which
an ornamental character may be given in any convenient manner.
It will be evident that two or more of these internal flanges may be produced in
one length of tube in the same manner, and if the "ring" is to be employed for the
bearing surface of a band pulley, strengthening discs will be placed inside, between
two flanges, to form the pulley, the position of the flanges being such that they will
close upon and tightly hold the discs.
The invention thus relates to the mode of forming the rings, which may be applied
for any purpose for which they are applicable.
Dated this 21st day of December 1896.
Improvements in the Manufacture of Metal Rings for Furniture
Pulleys, and the like.
We CHARLES ROCHOLL, Foreman, and THE WESTMINSTER MANUFACTURING
COMPANY LIMITED, both of 29A Gillingham Street, Pimlico London S.W. 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 chiefly to the manufacture of those articles which, in the
Price ad 1

page_text: furniture trade, are technically called "rings," and which are used partly for
ornamental purposes, and to prevent the splitting of the turned legs of furniture as
for instance when pin castors are employed but the invention also applies to the
manufacture of rings which may be used as the bearing or running surface or rims
for pulleys and wheels.
The "rings" for the purpose mentioned have hitherto been cast with an internal
flange against which the end of the leg rests, and the object of the present invention
is to produce such rings with an internal flange from metal tubing, by stamping or
pressure in dies.
In the accompanying drawing we have shown in sectional views the various
operations which are performed.
In carrying out this invention Fig. 1 represents a length A cut from a tube of suitable
metal. At the point where the internal flange is to be formed, a shallow groove a is
turned in the outer periphery of the length of the tube A. This length is placed in
suitable dies, and longitudinal pressure being applied to the ends the tube is caused
to bulge inwards at the weakened part, as seen at Fig. 2. The bulged part is next
flattened down by the dies, and the internal flange b is complete. At the same time
an external bulge, as shown at c Fig. 3 may be produced to which an ornamental
character may be given in any convenient manner.
It will be evident that two or more of these internal flanges may be produced in
one length of tube in the same manner and if the "ring" is to be employed for the
bearing surface or rim of a pulley, strengthening discs will be placed inside, between
two flanges, to form the pulley, the position of the flanges being such that they will
close upon, and tightly hold the discs.
The invention thus relates to the mode of forming the rings, which may be
employed for any purpose for which they are applicable.
The last named application is illustrated at Figs. 4 and 5. Thus one flange b is
first formed in the length of tube A and the discs to form the body of the pulley or
wheel which may be any number and of any shape are then placed in position, as
shown at Fig. 4.
In the simplest form these discs may consist of the outside shaped discs B and a
flat disc C the latter acting as a central support to the rim. The parts being placed
in a special die, by pressure, the second internal flange b' is produced as shown at
Fig. 5 and the two flanges are caused to grip firmly on the discs B, thus producing
in a simple and effective manner, a band pulley or wheel. The wheel when completed
may be bushed to receive the axle.
By turning up the edges of the rim in suitable dies a rough kind of grooved pulley
may be produced.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
1. The mode of producing an internal flange or flanges in a length of tube as herein
shown and described and consisting in forming a shallow groove or grooves in the
outer periphery of the tube, and subjecting the length of tube to pressure in a
longitudinal direction in suitable dies as set forth.
2. As a new article of manufacture, furniture "rings" produced from a length of
tube by pressure in suitable dies, as herein shown and described.
3. In the manufacture of pulleys or wheels, the use of a rim formed from a length
of tube having internal flanges produced in the manner herein shown and
described.
Dated this 15th day of Octahan 1000