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Патент USA US2110269

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March s, 1938.
Filed Oct. 24, 1936
William Hon/GU72v
In s4 /
Patented Mar. 8, 1938"
BALL oAs'rEn
} William Horvatli, New Brunswick, N. J.
Application October 24, 1936, Serial No. 107,444
3Claims. (Cl. 16-24)
This invention relates to new and useful im
provements in a ball caster for furniture adapted
to be used in the place of conventional casters.
The invention has for an object the construc
5 tion of a ball caster which is characterized by a
stud element for attachment on the furniture, a
ball bearing socket associated with said stud ele
ment and supporting a steel ball, and a cap ele
ment for engaging over said socket and holding
10 said ball'therein with a portion projecting from
the cap element to engage against the ground or
other surface.
The ball caster for furniture comprises a stud
element It for attachment on or to furniture and
associated with a ball bearing socket II housing
a steel ball I2. A cap I3 is engaged upon the
socket II and is formed with an opening l3‘
encircling the steel ball I2 outside of a large circle
thereof to hold the steel ball within the‘ socket.
The stud element III is formed with threads
Illa for threadedly engaging into the legs of furni
ture or other parts. The socket I I is integral with
the stud element I0. It is also formed with'ex
ternal threads I l'. The cap I3 is threadedly en
Still further the invention proposes to adapt
gaged on the threads I I’. The socket I I is formed
the ball caster for the legs of furniture and for V with a‘socket opening Ila into which the ball l2
15 the bottom supporting elements of furniture or ’ is disposed, so that the ball will touch the inner 15
the like.
Still further the invention contemplates con—
structing the socket element integral with the
stud element.
Another one of the objects of this invention re
sides in so arranging the parts that the cap'ele
face of the socket opening, only at one point.
In Figs. 3 and 4 another embodiment of the
invention has been disclosed in which the ball
caster comprises a stud element 20 for attach
ment on furniture or the like and associated with 20
a socket 2| for a ball 22. This ball is held in posi
ment may be screwed upon the socket element or ' / tion with a cap element 23. The stud element 20
may be attached by lugs or other fastening ele
Still further the invention proposes the provi
sion of an adjustable wire mounted on the cap ele
ment and adapted to control an opening therein
through which the ball may project so as to
adapt the device for steel balls having various
30 tolerances in relation to the cap elements.
For further comprehension of the invention,
and of the objects and advantages thereof, refer
ence will be had to the following description and
accompanying drawing, and to the appended
35 claims in which the various novel features of
the invention are more particularly set forth.
In the accompanying drawing forming a ma
terial part of this disclosure:—
in which the steel ball 22 is disposed.
The cap 23 comprises a disc portion 23“ en
gaged across the bottom side of the socket 2|, and
from the periphery of which there projects a
plurality of holding ?ngers 23'‘. These ?ngers are
bent over a portion of the socket element to
maintain the position of the cap.- The disc por
tion 238- is formed with an opening 23° through
which the steel ball 22 projects. This opening is
smaller than a great circle of the steel ball to
maintain the steel ball from falling out,
In Figs. 6 and 5 another embodiment of the
invention has been disclosed in which an arrange
Fig. 1_ is a perspective view of a ball caster
40 constructed according to this invention.
Fig. 2 is a vertical sectional view of Fig. 1.
Fig. 3 is a perspective view of a ball caster em
bodying a modi?cation of the invention.
Fig. 4 is a fragmentary vertical sectional view
45 of a portion of Fig. 3.
Fig. 5 is a bottom elevational view of another
ball caster embodying another modi?cation of
the invention.
Fig. 6 is a sectional view taken on the line 6-6
50 of Fig. 5.
Fig. '7 is a perspective view of a support foot
for furniture provided with a ball caster con
struction, according to this invention.
is formed with threads 20“. which 'threadedly en
gage into the leg 25 or other element of furniture.
The socket 2| is formed with a socket recess I la 25
Fig. 8 is a sectional view taken on the line 8+8
55 of Fig. 7.
ment is provided for adapting the ball caster to
hold steel balls of slightly different sizes or hold
ing a certain steel ball with different tolerances.
According to this form of the invention there is
a stud element 30 to which a socket element 3|
is associated. A steel ball 32 is mounted within
the socket element and projects therefrom
through a holding cap 33. The holding cap is
formed with a central opening 33a through which
the ball 32 projects.
This central opening has a groove 35 upon its
wall into which a resilient element 36 is engaged. 50
This resilient element extends through substan
tially 300° so that there is an opening through
which a holding wire 31, as hereinafter de
scribed, may pass. vThis holding wire is indicated
generally by reference numeral 31. It extends 55
2 ,
throughpassages 38 and” formed in the mate
rial of the cap element 33.‘ This wire Q‘l is of
varying thickness and may be pulled in one direc
tion or the other to engage different portions
cise cmstructions herein disclosed and the mm
isreservedtoaiichangeaandmodiiications com
‘resilient element 8. is formed with a groove in its
outer face into which the wire 31 engages.
Having thus dwcribedmy invention, what I
I thereof against the 'resilient'element it. The
Bet _ States M Patent 18:-
screws II and 4| engage against the end portions
1. Abail caster forfurniture and the like, com-'.
of the wire 31 to hold the wire in fixed positions.
prising a stud element for‘ attachment to turni
These set screws are threadedly mounted through
ture, a ball bearing socket associated therewith,
engaging in said socket, and a cap
. The‘wir'e
the cap
81 element
is iormed
. a lo'o
em in said socket for holding said "ball
portion 81' which engages about the ball 32 at thereimsaid ‘cap being formed with an aperture
an area below a great circle thereof to hold the intowhichthesteeibailproiects,agroovein the
baii from falling out of the socket element ii.‘ adjacentfaceofsaidaperture,aresilientele
ment mounted‘within said groove. anda ?exible
wire loopedto'se‘at in said resilient element and
The socket element is formed with a recessed,
portion lie into which-the ball 32 engages. The
screws II and 4| may be, momentarily vloosened
itsqlds extending outwards and secured
‘ and the wire 31 moved so that either a thicker'or
I thinner portion thereof'isdisposed within the ~
2. Abalicasterforfurniture andthe like, com
looped portion 81' and sowthe size of the hold
prising a stud element for attachment to furni
ing portion
The resilient element 30 is Vture, a bail bearingsoeket associated therewith,
adapted‘zto. compensate for any eccentricity of ,asteelball'engaging'
insaidsocket,andacap en
the loop" portion 31' so thatiit is substantially z?slngonsaidsocketforholdingsaidbalitherew
concentric and capable 'of supporting the]
_ in,'said cap being formed with anaperture into
The form of the invention illustrated in Figs.
which thesteel ball projects, a groove in the
adjacent face of said aperature, a resiiientleie
I and t may be applied to the cap elements shown
in Figs; 2 and 4. Also. thisarrangement may be
incorporated in ‘the form of the‘ invention shown
wireloopedto seat in said resilient element and
ment mounted within said
and‘a ?exible
havingits ends extending outwards and secured
uponsaid cap,
wire being of di?erent
In Figs, '7 and 8 another embodiment of the in-" thicknessfromendtoendsothatasitis?xed
vention has been disclosed ‘in which there is_a longitudinally, the operative size of said loop por- v
corner piece consisting of
angle shaped ele tion willv vary. I
ment 40 having arms 40' and “batright angles
3. ‘Allan casterffor 'fur'nitureland the like, can?
to each other. ‘The lower arm of the angle shape prising a stud element for attachment to furni
in Figs. 7 and 8.
is formed with socket openings.“ vthrough which _ ture, a ball bearing socket
steel ‘balls .42 project.
upwards within
steel balls extend
‘43, formed in a holding
and acap'
engaging on said socket'for holding said'ball
element 44 attached by ‘severalboIts I! to the
therein, saidv cap being formed with ‘an aperture 40
of vthe member". These balls pro
iect from the bottom face of the angle member
into which the'steel ball projects, a groove in the '
II and rest upon the ‘ground, 7 The corner ele
ment may be used to support the corner of a
moimted within said groove, anda ?exible wire
looped'to seat in said resilient element andhav
adjacent face of said'aperture, ‘a resilient element
piece ofiurniture or other element. Preferably.
.ingitsendsextendingoutwards andsecureduporr
four of these corner devices are needed to sup
said cap, the ends or said'wire being held 'with
-saidscrewslnonntedthroughthemateriaiofsaid ~_
port a rectangularpi'ece :of furniture.’
a‘steel ball engagln'gin
, While I have illustrated and described‘ the pre
ferred embodiments of-my invention, it is to be
so understood that I do not limit myself to the pre
wllmsu nonvs'i'a. ‘
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