An Improved Caster for Chairs and other Articles.
Year: 1896

page_text: Date of Application, 12th May, 1896-Accepted, 13th June, 1896
An Improved Caster for Chairs and other Articles.
I WILLIAM UNETT COATES of Hill Vicarage, Falfield, in the County of
Gloucester, Clerk in Holy Orders 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:-
The object of this invention is to construct casters for chairs or other articles,
which will move easily, and not get out of order with wear.
The caster consists of three principal parts.
1st. The socket which is fixed to the chair or other article.
2nd. The pin on which the chair or other article rests.
3rd. The roller and the frame in which it turns.
DESCRIPTION.
The caster may be made with or without a ball bearing at a, as shown in Fig. 7
and Fig. 8.
Fig. 1 is a section of the socket which is fixed to the chair or other article in
any of the ordinary ways and is made accordingly; in Fig. 1. the socket is shown
as it is made when the leg of the chair or other article is to be fitted into it. It is
made of brass or other metal, and bored true at a and b ;-it has a small hole
through the metal at h. Fig. 1.
Fig. 2 is a plan of the socket.
Fig. 3, is an elevation of the pin-it is made of steel or other metal.
The
part d which passes through the hole h. Fig. 1. is part of the pin or fixed to it;
after the pin is put in its place, it is rivetted at the top to prevent the pin from
dropping out, but so as to let the pin move freely.
Fig. 4. is an elevation of the pin when the ball bearing is used, as shewn in
Fig. 7. In Fig. 4 is also shown part of the socket, in section, which shows an
alternative plan to prevent the pin from dropping out: The screw w is screwed
into the side of the socket and fits loosely into a groove in the pin :-When this
plan is adopted the part d Fig. 3 will not be required.
In Fig. 4. the washer m is shewn in section, it is fixed to the socket after the
balls are in position, see Fig. 7.
Fig. 5. is a section of the whole caster when the ball bearing is not used. P the
pin-R the roller: F the frame of the roller: S the socket.
Fig. 6 is an elevation of the whole caster when the ball bearing is not used.
Fig. 7 is a section of the whole caster when the ball bearing is used, as shown
at a. P the pin, B the balls. m the washer, which is fixed to the socket after the
balls are placed in position.
Fig. 8 is an elevation of the whole caster when the ball bearing is used, showing
the end view of the roller.
Fig. 9 is a plan of the roller and frame showing the position of the balls when a
ball bearing is used-B the balls F the frame: K the roller. The frame is rigidly
fixed to the pin P-see Figs. 5 and 7.
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 I
claim is
1st. A caster for chairs or other articles constructed as herein described and

page_text: shown by the drawings, having regard to the principle involved, rather than to the
minute details of construction.
2. The construction of the caster so that the weight of the chair or other article,
shall rest on the end of the pin to which the roller-which rests on the ground-is
attached.
3. The construction of the pin, the roller and its frame in such a manner that it
is kept in position by working against the inside of the socket.
Dated this 11th day of May 1896.
W. UNETT COATES,
Applicant.