Year: 1899

page_text: I, WILLIAM ALLMAN, of Messrs. Cope and Timmins Limited, Icknield Square,
in the City of Birmingham, Managing Director, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improvements in castors, and consists in improved
means whereby the pivot pin, and the horn and its bearing are arranged and
connected to each other.
In this my invention, the interior bearing of the horn is made much as usual.
The pivot pin has a somewhat large head formed thereon, with an underneath
neck to accommodate the lower part of the hole in the horn. This pin is passed
upward through the horn, and a conical or bulbous washer, or the like, which
agrees with the upper conical or bulbous part of the hole in the horn, which
thereby forms the bearing. This conical or bulbous washer is made nonrotative
with the pin, by means of its having a square hole fitting upon a square formed
upon the pin. Above this washer is carried the usual plate or socket which rests
against the foot of furniture &c. Or if desired this plate and the bulbous washer
may be formed in one and the same piece. The square portion upon the pir
extends just through the plate, when the corners (or angles) of the same, are
chiselled or nicked outwards over the plate to prevent its withdrawal.
:
Or instead of this I may form a cross notch or notches upon a round pin, into
which the side or sides of a secondary rear washer may be pushed or in some
cases the inner metal of the washer itself may be forced thereinto; in each case
causing a nonrotative relation between the bulbous washer and the horn, and
also preventing withdrawal.
The remaining upper end of the pin may be finished as desired, that is, with
screw thread or otherwise, according to method of attachment to furniture.
I, WILLIAM ALLMAN, of Messrs. Cope and Timmins Limited, Icknield Square,
in the City of Birmingham, Managing Director, 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:-

page_text: means whereby the pivot pin, and the horn and its bearing are arranged and
connected to each other.
In order to more clearly explain this my invention I have appended hereunto
an illustrated drawing upon which are figures and numbers of reference, similar
numbers referring throughout the several views to the same thing or part.
Fig. 1, is a sectional view of a castor made according to this my invention.
Figure 2, is a detail view of the central pin.
Fig. 3, is a plan view in detail of the non-rotative plate.
Figure 4, is a plan view in detail of the bulbous washer.
Fig. 5, is a sectional view of the modified form of castor made according to
this my invention.
Fig. 6, is a detail view of the modified shape of central pin.
Fig. 7, is a sectional view of the pin on line A-B Fig. 6.
Fig. 8 is a plan view of slitted plate for securing the central pin.
Fig. 9, shows plan and elevation of an unslitted plate for securing the central
pin.
Referring to Figs. 1 to 4 inclusive:-12, is the horn; 13, is the roller; 14 the
central attachment and swivel pin.
The interior bearing of the horn 12, is made much as usual. The pivot pin 14,
has a somewhat large head 15, formed thereon, with an underneath neck 16, to
accommodate the lower part of the hole in the horn. This pin is passed upward
through the horn, and through a conical or bulbous washer 17, which agrees
with the conical or bulbous part of the hole in the horn, which thereby forms
the bearing. This conical or bulbous washer 17. is made non-rotative with the
pin. This may be done by having a square hole in the said washer and extending
the square part 18, of the pin 14, low enough for the said washer to fit thereon,
but I prefer to have the hole in the said bulbous washer round, as seen in Figs. 1
and 4, to fit upon the round neck of pin 14; and to prevent its rotation, I secure
thereto the washer 19, having the square hole to fit upon the pin at 18. This
washer 19, serves as the usual plate, or may form part of the socket, which rests
against the foot of furniture &c. The square portion 18, upon the pin extends
just through the plate 19, when the corners (or angles) of the same, are chiselled
or nicked outwards over the plate to prevent its withdrawal.
Referring to Figs. 5 to 9 inclusive, I may form a cross notch or notches 20,
upon a round pin 14, into which the slitted side or sides 21, of a secondary rear
washer 19, may be pushed: or in some cases the inner metal of the washer 19,
itself may be forced thereinto. The said washer 19 or 19b, is pressed so tightly
into the bulbous washer 17ª, as to be rotative only therewith, and in each case
causing a non-rotative relation between the bulbous washer and the pin 14+, and
also preventing withdrawal.
The remaining upper end of the pins 14, 14, may be finished as desired, that is
with screw thread or otherwise, according to method of attachment to furniture.
Having now particularly described and ascertained the nature of this my said
invention, and in what manner the same is to be performed, I declare that what
I claim is―
1. In castors for furniture and the like purposes securing the bulbous bearing
washer 17, to the pivot pin 16, by means of the plate 19, having a square hole
fitting upon the square portion 18 of said pin and secured thereto all substantially
as set forth and shown in Fig. 1.
2. In castors for furniture and the like, securing the bulbous bearing
washer 17 to the pivot pin 14" by means of the rear washer 19 or 19b whose
sides are pressed into a recess 20 upon said pin all substantially as set forth and
shown in Fig. 5.
3. In castors for furniture and the like the combination with the horn and the
central pivot pin, of a bulbous bearing washer or plate in which such washer or

page_text: plates is made non-rotatable by means of such washer or plate or secondary washer
engaging with a non-circular part of the pin, substantially as set forth and shown
ou the drawings.
Dated this 27th day of February 1900.
CHARLES T. POWELL,
Applicant's Agent.
158, Edmund Street, Birmingham.