Improvements in the Construction of Wheels or Bowls for Castors and other purposes.
Year: 1899

page_text: Date of Application, 23rd Jan., 1899
Complete Specification Left; 22nd Nov., 1899-Accepted, 30th Dec., 1899
Improvements in the Construction of Wheels or Bowls for Castors and
other purposes.
I, JOHN HARRINGTON, of Claremont, West Street, Ryde, in the Isle of Wight,
Manufacturer, do hereby declare the nature of this invention to be as follows:
The invention has for its object improvements in the construction of wheels
or bowls for castors and other purposes with a view to efficiency and economy in
the cost of production.
According to my invention I form cups of sheet metal to form the sides and
periphery or running surface of the bowl or wheel, the sides are suitably shaped
and are centrally perforated to receive a hollow bush or hub which may be of
any suitable construction but which according to my invention is formed of two
pieces of sheet metal of different dimensions bent into cylindrical form, the
shorter cylinder being bent over the longer so as to grip it firmly and leave a short
length projecting at each end. The inner cylinder is of external diameter to fit
closely the holes in the sides of the first mentioned cups, so that when the cups
are placed in position on the bush with the cylindrical parts meeting, the ends
of the bush are pressed over or rivetted so as to firmly grip the cups and hold
them securely together. In order to support the cylindrical parts of the aforesaid
cups I employ a piece of tubing tightly fitting the interior of said cups and I
form such tubing preferably of a piece of sheet metal bent into tubular form
or I employ a cup similar to the before mentioned cups but slightly smaller.
When employing an internal supporting cylinder I make it of length to fit across
from side to side of the bowl or wheel and in this case I preferably form the first
named cups with a narrow internal annular recess in their sides to receive the
edges of the supporting cylinder. When using an internal cup I place the
cylindrical part of the latter midway of the width of the wheel or bowl so as to
afford support to both portions of the periphery or running surface of the bowl
or wheel.
The hollow bush or hub may also be formed of an internal cylinder constructed
of a sheet of metal bent to cylindrical form and a number of washers strung on
and tightly fitting said inner cylinder.
COMPLETE SPECIFICATION.
Improvements in the Construction of Wheels or Bowls for Castors and
other purposes.
I, JOHN HARRINGTON, of Claremont, West Street, Ryde, -in-the Isle of Wight,
Manufacturer, do hereby declare the nature of this invention and in what manner
Price 8d.1

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
The invention has for its object improvements in the construction of wheels
or bowls for castors and other purposes with a view to efficiency and economy in
the cost of production.
The accompanying drawings illustrate my invention in which Figure 1 is a
cross section through the wheel or bowl and Figure 2 is. a side elevation thereof
partly in section. Similar letters of reference refer to like parts.
A, A, are cups forming, the sides and periphery of the wheel or bowl, these are
pressed from a sheet of metal or other material at one operation, and each one
is provided with a central opening, through which the hollow tubular bush B
is inserted: Surrounding the bush B, I place 'another tube C which acts as a
distance piece when the ends of the bush B are rivetted or closed up, by pressure,
the sides of the wheel or bowl are by this means maintained and locked in the
required position. The support for the cylindrical part or periphery of the cups A
consists of a tubular piece D which is made to fit tightly within the same as shown,
this piece I also serves as a means for ensuring the correct register of the abutting
portions of the cups A, A, and likewise for strengthening purposes.
As a modification I propose to use internal pressed cups for supporting the
external cups but I do not consider this an important feature and therefore do
not illustrate the same. Also I do not deem it necessary to construct the cups.
with a narrow internal annular recess as explained in my Provisional Specifica-
tion, nor to use a series of washers strung on and tightly fitting the hollow bush.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is-
1. Constructing a wheel or bowl for castors and other purposes of two similar
cups of metal or other material which have been pressed into the required shape,
the said cups when placed together being held and locked in the required position
by means of a bush formed in two pieces, substantially as described and illus-
trated.
2. Constructing a wheel or bowl for castors and other purposes of two similar
pressed cups and strengthening the periphery or bearing portions of the same by
means of an internal tube such as D which in addition acts as a means for keeping
the adjacent abutting portions of the cups in line with each other substantially
as described and illustrated.
3. Constructing a wheel or bowl for castors and other purposes substantially
in the manner as described and illustrated.
Dated this 22nd day of November 1899.