Improvements in Furniture Castors.
Year: 1895

page_text: Date of Application, 26th Oct., 1895
Complete Specification Left, 30th Apr., 1896-Accepted, 13th June, 1896
PROVISIONAL SPECIFICATION.
Improvements in Furniture Castors.
I, THOMAS SMITH of Lombard Street, in the City of Birmingham, Manager of
Works, do hereby declare the nature of this invention to be as follows:-
This invention has relation to castors for bedsteads, chairs, couches and other
articles of furniture, and has for its object, a loose and swivelling connection for
attaching the horn part to a plate, foot, pummel or the like of a post, pillar, stand
leg or other part of an article of furniture.
In carrying out my invention, in connection with a bedstead castor I surmount
the cross head, bar or plate of the horn (which is suitably fitted with a spindled
bowl) with an upright pivot or stalk, preferably coned at its extreme upper end
and having a broad collar at its base or shank, whilst the end of the said stem,
inward of the conoidal point, is wormed and is larger in diameter than the other
and lower part of the stalk. By the lower part of the stalk being less in diameter
than the screwed part, a circular collar or shoulder is created at the junction of
the one part with the other.
The body part is of a box construction, with the inside crown cone sunken and
forming the bearing to the conoidal ended pivot, whilst the hole forming the
entrance to the hollow box is of smaller diameter than the said box part and is
wormed suitable for taking the worm of a spindle.
To make a connection between the parts or to secure the castor to the lower end
of a post to which is fitted the aforesaid box body part, screw the horn part to the
foot, when the shoulder at the lower termination of the screw comes above
the plane of the bottom of the box of the chamber and swivels within it as
freely as though the said screwed part was a head at the upper part of the
stalk.
There is a slight vertical play between the underside of the box body and the
topside of the collar at the shank of the pivot, so as to admit of the shoulder as
aforesaid leaving the inside of the box part.
The weight of the article supported keeps the said body constantly home upon
or nearly upon the shank collar, with the conoidal part of the pivot working within
its coned bearing.
To disconnect the parts, it is only necessary to draw the box part away from
the horn and rotate the horn from left to right when the same becomes unscrewed
from the box.
The application of my invention to plate and other castors differs in no essential
respect from its application to a bedstead castor as herein described.
Dated this 25th day of October 1895.

page_text: Improvements in Furniture Castors.
I, THOMAS SMITH, of Lombard Street, in the City of Birmingham, Manager of
Works, 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 :-
This invention has relation to castors for bedsteads, chairs, couches and other
articles of furniture, and has for its object, a loose and swivelling connection for
attaching the horn part to a plate, foot, pummel or the like of a post, pillar,.
stand-leg or other part of an article of furniture.
In carrying out my invention in connection with a bedstead castor I surmount
the cross head, bar or plate of the horn (which is suitably fitted with a spindled
bowl) by an upright pivot or stalk, preferably coned at its extreme upper end and
having a broad collar at its base or shank, whilst the end of the said stem, inward
of the conoidal point, is wormed and is a little larger in diameter than the other
and lower part of the stalk. By the lower part of the stalk being less in diameter
than the screwed part, a circular collar or shoulder is created at the junction of the
one part with the other.
The body part is of a box construction, with the inside crown cone sunken and
forming the bearing to the conoidal ended pivot, whilst the hole forming the
entrance to the hollow box is smaller in diameter than the inside of the said box
part and is wormed suitable for taking the worm of a spindle.
To make a connection between the parts or to secure the castor to the lower end
of a post to which is fitted the aforesaid box body part, screw the horn part to the
foot, when the shoulder at the lower termination of the screw
comes above
the plane of the bottom of the box of the chamber and swivels within it
as freely as though the said screwed part was a head at the upper part of the
stalk.
There is a slight vertical play between the underside of the box body and the
topside of the collar at the shank of the pivot, so as to admit of the shoulder as
aforesaid leaving the inside of the box part.
The weight of the article supported keeps the said body constantly home upon
or nearly upon the shank collar, with the conoidal part of the pivot working within
its coned bearing, but with the shoulder at the commencement of the screw part
being kept away from the bottom of the box.
To disconnect the parts, it is only necessary to draw the box part away from
the horn and rotate the horn from left to right when the same becomes unscrewed
from the box.
The application of my invention to plate and other castors differs in no essential
respect from its application to a bedstead castor as herein described.
Figure 1 of the accompanying drawings represents a two-part attachable and
detachable castor constructed according to my invention and applied to the leg
of a bedstead.
Figure 2 represents a part vertical section of the said castor in the position which
it assumes when it is in use.
Figure 3 shows a like sectional view as Figure 2, but with the primary parts of
the castor separated.
Figure 4 represents a topside plan of the castor Figure 2.
Figure 5 is a like section as Figure 2, but with the horn partly broken away
and showing how the shoulder forming the lower termination of the thread, stands
away from the inside bottom of the box body part.
Figure 6 is a cross section of Figure 5 upon the dotted line x.
Figure 7 is an underside plan of the body part.

page_text: In Figures 1 to 7, a is the body part of the castor, cast within the foot 61, of a
bedstead pillar b, and with the same fitting upon a cone-ended upright and rotating
spindle c, wormed about its middle at d, and having a shank collar e, carried or
mounted upon the topside of the cross head f¹, of the horns f, between which the
bowl g, turning upon a pivot g', works.
The entrance to the hollow body is screwed at a', suitable for receiving the
worm d, of the rotating spindle c, and leads into a box a³, larger in diameter than
the wormed entrance and terminating in a plain cone-ended top a³, wherein the
cone-ended part of the spindle comes and there rotates. The inside bottom of the
box a, forms a shoulder at, whilst the screwed part d, has a shouldered part at d²,
which when standing away from the shoulder a, admits of the spindle with the
horns and bowl swivelling and freely rotating, but when the said collar or lower
edge d', of the screw is brought against the bottom a', of the box a², then the said
screw d, leads into and interworms with the female screw a¹, at the entrance to the
box and the primary parts of the castor can be detached by unscrewing.
Figure 8 represents my invention applied to a plate castor.
a is the body part, f the horn, g the bowl and h the plate.
Figure 9 represents my invention applied to a socket castor.
a is the body,f the horn, g the bowl and h the socket.
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. An attachable and detachable two-part furniture castor, one part of which
has a partly wormed spindle, the said wormed part being larger in diameter than
the plain part and taking into and swivelling within a box or chamber formed
within the interior of the other part and having a screwed entrance, substantially
as and for the purpose described and set forth.
Secondly. A two-part furniture castor, and the means for connecting and dis-
connecting the one part to or from the other part, substantially as herein described
and set forth.
Dated this 29th day of April 1890.
rateu tiП3 2701 Uay UL АРГП 1000.
THOMAS SMITH,
By Henry Skerrett,
24 Temple Row, Birmingham, Agent for Applicant.