Improvements in Castors.
Year: 1890

page_text: Date of Application, 16th Apr., 1890
Complete Specification Left, 27th May, 1890-Accepted, 28th June, 1890
PROVISIONAL DI CITIGATION.
Improvements in Castors.
I SIMPSON DENT of 5 Cole Street Birkenhead in the County of Chester,
Salesinan, do hereby declare the nature of this invention to be as follows:-
The invention relates to so called ball castors for furniture and the main object
is to so make them that though simple in construction the ball shall rotate freely
in any direction.
Castors under my invention have a hard metal bearing piece provided with lugs
so disposed that a hard metal ball of suitable size will move freely in any direction
without becoming displaced. In combination with these parts there are a hollow
metal carrier which fits over the bearing piece and through which the face of the
ball projects without touching except when the castor is raised, and a socket piece
which is attached to the furniture and to the hollow carrier.
Dated this 15th day of April 1890.
Per pro J. T. KING,
W. B. Johnson, Agent.
COMPLETE SPECIFICATION.
Improvements in Castors.
I SIMPSON DENT of 5 Cole Street Birkenhead in the County of Chester,
Salesman, 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 invention relates to ball castors for furniture, and the main object is to so
make them that though simple in construction the balls shall rotate freely in any
direction.
'
Castors under my invention have a hard metal bearing piece provided with lugs so
disposed that a hard metal ball of suitable size will turn freely in any direction
without becoming displaced. In combination with these parts there is a hollow metal
carrier which fits over the bearing piece and through which the face of the ball
projects without touching it except when the castor is raised, and a socket picce which
is attached to the furniture and to the hollow carrier.
The accompanying drawing is a transverse section of an improved castor con-
structed in accordance with my invention a, is a dish shaped bearing piece of hard
metal such as chilled cast iron having a central boss 6 and four depending lugs c.
d, is a hard metal ball which fits within lugs c and abuts against the boss b. The
above parts are so proportioned that the ball will not leave its seat when moved by
pressure on the piece a, e is the hollow metal carrier which fits over the bearing
piece a and is screwed to the socket piece f. The socket piece f is attached to the
furniture by means of screws, or in any usual manner.
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 :-
First. Castors consisting of a bearing piece a having lugs c, ball d, carrier e and
socket piece f constructed and combined substantially as set forth.
Second. In a castor the combination of boss c and lugs d with ball e constructed
and proportioned substantially in the manner and for the purpose set forth.
Dated this 23rd day of May 1890.
Da T T KING
Per pre J. T. KING
J. Johnson, Agent.