Improvements in Castors and in the Manufacture of the same.
Year: 1887

page_text: Date of Application, 25th Nov., 1887
Specification Accepted, 27th Dec., 1887
COMPLETE SPECIFICATION.
Improvements in Castors and in the Manufacture of the same.
I GEORGE YORKE ILIFFE of 253 Sherlock Street Birmingham in the County of
Warwick Manufacturer do hereby declare the nature of my said invention and in
what manner the same is to be performed to be particularly described and ascertained
in and by the following statement:
My invention has for its object improvements in castors and in the manufacture of
the same which enables me to produce such castors both more exact in their parts
cleaner in their finish and lighter and requiring much less labour in finishing and thus
they are cheaper and better in every practical sense.
In order that my invention may be clearly understood, and more easily carried into
practice I have appended hereunto a double sheet of drawings upon which eight
figures are shown with two castors illustrated but this will enable others of varying
shapes to be produced as the principle remains the same.
Figure 1 is a side view of a fluted castor complete made according to my invention
and in which the advantages are very great indeed because the flutes a' in cast metal
ones are very awkward indeed to file out and polish up.
Figure 2 is a side view of a plain castor made according to my invention.
Figure 3 is a disc plate which I take as a foundation piece in forming the body
part A of the castors.
Figure 4 is approximately the shape I raise A into with the first pair of dies.
Figure 5 represents A after passing through the next set of dies.
Figure 6 shows the edge of the plate A turned round into the plain bead as
shown at Figure 2 and is a form greatly used in castors.
Figure 7 shows a modification by which I may form the top edge of a supple-
mental piece B either made from a strap or ring. When the bead is required to be
large the part b¹ is made wider and indeed the projections are varied to suit the shape
required.
Figure 8 shows Figure 7 with the supplemental piece B formed into the bead.
It will be quite evident that the flutes a², a² may be of any design or any number

page_text: of them and the figuring may be varied considerable especially if moveable or sliding
side dies are used to figure or raise the parts to design in an irregular manner but
this would be exceptional. The flange a¹ Figure 1 may be made of any size and cut
around its edge to any design by forming the dies to the required shape. It will be
easily understood that the regularity in the thickness and smoothness of the metal
will be far superior to cast work and therefore a great improvement thereupon. I do
not confine myself to the exact forms shown by Figures 3, 4, 5, 6 or 7 as they will
vary according to the ultimate shape required and the elasticity of the material used
and indeed in some metals it may be quite possible to dispense with one of the
operations or to introduce another so as to do the work more gradually or quicker as
the case may be but my directions will apply to general cases. I may make the
part A from the disc A Figure 3 by spinning or partly by dies and the edge a' or
other part by spinning.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed I declare that what I
claim is :-
The improvements in castors and in the manufacture of the same having the body
part A made from rolled or wrought metal in the manner herein before described.
namely by either the gradually formation of the same by dies or by spinning or
partly by each made substantially as and for the purpose herein set forth and shown
the drawings.
upon
Dated this 22nd day of November 1887