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Патент USA US3026566

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March 27, 1962
c. MALLONEE
3,026,557
ELEVATOR CASTERS FOR FURNITURE AND THE LIKE
Filed Feb. 15, 1960
2 Sheets-Sheet 1
INVENTOR.
Clare/Ice Mal/met
WAM
A ffarney. ‘
Mafrch 27, 1962
c. MALLbNEE
3,026,557
ELEVATOR CASTERS FOR FURNITURE AND THE LIKE
Filed Feb. 15, 1960
2 Sheets—$heet 2
Z
7?
5
I $4
7137. J
INVENTOR.
?are/Ice Ala/loner
#Wam
lo
3,d26,55'l
Patented Mar. 27, 1962
2
Adjacent the outer end of each outer section 18 of
each bar 14, a vertical shaft 28 extends therethrough,
3,026,557
ELEVATOR CASTERS FQR F
.
AND THE LIKE
being supported for vertical sliding movement in a bear
Clarence Mallonee, 7045 Riverview, Muncie, Kans., as
ing member 30 welded or otherwise ?xed to the upper
signor of one-half to Ireland U. Wells, Kansas City,
surface of the bar. Said shaft is preferably non-circular,
to prevent rotation thereof in said bearing. To the lower
Mo.
Filed Feb. 15, 196i), Ser. No. 8,591
Claims. (Cl. 16-83)
end of shaft 28, below the bar, is attached a swivel caster
32 including a caster wheel 34. Adjacent the upper end
of the shaft, above bearing 30, a collar 36 is ailixed
thereto, and a helical compression spring 38 is disposed
about the shaft, hearing at its lower end against bearing
36 and at its upper end against collar 36, whereby to
This invention relates to new and useful improvements
in casters or caster systems for furniture or the like, and
has as its principal object the provision of caster wheels
adapted to be mounted on the frame of a piece of furni
ture and operable to be extended below or retracted above
the plane of the lower ends of the furnture legs or other
urge the shaft upwardly to such an extent that wheel 34
is disposed entirely above the horizontal plane of the
normal ?oor-engaging portion of said frame. When ex— 15 lower ends of legs 10, and hence above the floor 12.
Attached to the extreme upper end of shaft 28 is a clevis
tended beneath said plane, they elevate the furniture legs
46 in which is rotatably mounted a pulley Wheel 42, said
above the floor whereby the furniture piece is supported
pulley wheel being rotatable on a horizontal axis and
entirely by said wheels for easy transportation from place
disposed in the vertical plane of the centerline of bar 14.
to place Without scratching or marring the ?oor. When
the wheels are retracted above said plane, the furniture 20
piece is supported entirely by its legs, whereby to pre
vent accidental movement or shifting thereof.
Another object is the provision of a caster device of
the character described wherein all of the caster wheels
A cable 44 is a?‘ixed at one end to each of the outer
sections 18 of each bar 14, between shaft 28 and the
adjacent lip 24. As shown, a sheet metal bracket 46 is
Cable 44'
riveted to bar section 18,‘ and has a slot 48.
extends through said slot and is prevented from pulling‘
which may be required for the adequate support of a 25 through the slot by a block 56 affixed on the cable within
the bracket. Said cable extends upwardly from bracket
furniture piece may be operated, that is raised or lowered,
46, is trained over pulley wheel 42, then extends down
simultaneously from a single control station.
wardly and is trained under a pulley wheel 52 rotatably
A further object is the provision of a caster device of
mounted in a clevis 54 a?ixed to the upper surface of bar
the character described having a mechanical advantage
such that the Wheels may be lowered, and even the heaviest ‘ section 18 at the side of shaft 28 opposite to bracket
46. From pulley wheel 52, cable 44 extends horizontally
furniture thereby lifted, with the application of only a very
inwardly along the upper surface of bar 14 to a point
small manual force, so as to be easily operable by any
adjacent the center thereof, where it is trained around
housewife or even a child.
a pulley wheel 56 which is rotatably mounted on a vertical
Other objects are simplicity and economy of construc
tion, efficiency and dependability of operation, adapta 35 post 53 ?xed in central section 16 of the bar.
From pulley wheels 56, it will be seen in FIG. 1 that
bility to furniture pieces of various sizes and shapes, and
the cables 44 from all four of the casters extend hori
applicability to objects other than furniture, such as fac
zontally in substantially parallel relation toward one of
tory machines.
the side rails 8 of frame 2. Adjacent said side rail, each
With these objects in view, as well as other objects
which will appear in the course of the speci?cation, refer 40 of said cables extends through a hole 60 in an elongated
plate 62, and is secured therein by a block 64 affixed to
ence will be had to the drawing, wherein:
said cable adjacent the plate. Adjacent its respective
FIG. 1 is a top plan view of the lower portion of the
frame of a couch or the like, with a caster device em
bodying the present invention mounted operatively there
ends, plate 62 is provided with integral sleeve bearings
66 having sliding engagement respectively on a pair of
FIG. 2 is an enlarged fragmentary sectional view taken
parallel guide bars 63 extending parallel to the adjacent
portions of cables 44, and a?ixed in a base plate 79
on line II—II of FIG. 1, and
FIG. 3 is an enlarged fragmentary view similar to
affixed to the inner surface of rail 8 by screws 72. A
screw shaft 14 is threaded in a bushing 76 formed cen
on,
FIG. 1, shown in section, of the operating crank and
screw, and related parts.
Like reference numerals apply to similar parts through
out the several views, and the numeral 2 applies to the
lower portion of the frame of a couch or the like. Said
frame consists of a front rail 4, back rail 6, and sides
8 and 9, all rigidly joined together to form an open rec
tangle, and a leg It) affixed at each corner whereby nor
mally to support said frame above the ?oor 12.
trally in plate 62, and extends parallel to guide bars 68,
50 being journalled in a bushing 78 formed integrally with
base plate 70, and secured therein by a collar 86 against
longitudinal movement. Said shaft extends outwardly
from base plate 70 through a hole 82 formed in frame
rail 8, and is ?tted at its outer end with a crank 84,
whereby said shaft may be turned manually.
It will be seen that when crank 84 is turned to move
plate 62 toward side rail 8, all of cables 44 will be ten
sioned, and will force shafts 28 downwardly against the
pressure of springs 38, by forcing pulley wheels 42 down
indicated generally by the numeral 14 and extending hori 60 wardly. This forces caster wheels 34 against the floor 12,
The device forming the subject matter of the present
invention includes a pair of flat bars or brackets each
zontally between front and back rails 4 and 6, respec
tively adjacent the opposite sides of the frame. Each of
said bars includes a central section 16 and a pair of
lifting the legs 16 free of the floor so that the furniture is
supported entirely on said wheels for easy rolling move
ment of the furniture from place to place. When crank 84
is turned in the opposite direction, cables 44 are slackened,
end sections 18. Each end section is adjustably secured
to the central section by a bolt 20 which passes through 65 whereby shafts 28 are raised by springs 38, lowering the
furniture legs into contact with the floor and raising caster
the end section and through a longitudinally elongated
wheels 34 above the ?oor.
slot 22 formed in the central section. The outer end
The device has several advantages over any prior struc
of each end section has a turned up lip 24 secured to
ture within my knowledge. All of the wheels are con
the adjacent frame rail 4 or 6 by bolts 26. It will be
apparent that by loosening bolts 20, the bars may be 70 trolled from a single station. Crank 84 is detachable
adjusted to frames of various sizes.
from screw shaft 74, so as to prevent accidental or un
3,026,557
3
4
authorized lowering of the wheels as by children. The
device is adaptable, as by adjusting the lengths of bars
?oor-engaging portion of said furniture frame, said op
14 by loosening screws 20, and by arranging cables 44 in
each of said shafts and urging said shaft upwardly to re
tain the associated caster wheel yieldably in its retracted
position, a ?rst pulley mounted at the upper end of each
of said shafts, a second pulley mounted on the associated
bracket adjacent each of said shafts but lower than the
associated ?rst pulley, a cable associated with each said
any desired pattern, to be attached to many different sizes
and shapes of furniture, machines and the like. It may
be sold as a separate unit for attachment to pre-existing
furniture .or other objects. It provides a very substantial
mechanical advantage, so that even the heaviest furniture
may be elevated by any housewife or child. This me
erating means comprising spring means associated with
wheel, being secured at one end to said bracket and ex
chanical advantage is derived both from screw 74, and 10 tending upwardly over the associated ?rst pulley and
downwardly around the associated second pulley, and a
from the fact that each cable extends over pulley wheel
tensioning device adapted to be af?xed to said frame and
42 and is affixed to the bar 14, rather than being attached
having an operating member movable relative to said
directly to the upper end of shaft 28. This latter pro
frame and means for moving said operating member, the
vides a block-and-tackle arrangement procuring a down
ward force on shaft 28 approximately double the tension 15 opposite ends of all of said cables being secured to said
operating member, whereby all of said wheels may be
of the cable.
extended or retracted simultaneously.
While I have shown and described a speci?c embodi
2. The structure as recited in claim 1, wherein said
ment of my invention, it will be readily apparent that
tensioning means comprises a base member adapted to be
many minor changes of structure and operation could be
made without departing from the spirit of the invention 20 af?xed to said frame, a screw journalled in said base
member and threaded in said operating member, and a
as de?ned by the scope of the appended claims.
crank for turning said screw, whereby said operating mem
What I claim as new and desire to protect by Letters
Patent is:
ber may be moved to apply a tension to said cables which
is greater than the manual force required to turn said
l. "A caster device for furniture comprising a plurality
of elongated brackets adapted to extend across and be 25 crank.
af?xed at their ends to a furniture frame, a pair of vertical
References Cited in the ?le of this patent
shafts carried for vertical sliding movement in each of
UNITED STATES PATENTS
said brackets respectively adjacent the opposite ends there
1,021,773
Grub ________________ __ Apr. 2, 1912
of, a caster wheel mounted at the lower end of each of
said shafts, and operating means for moving said shafts 30 1,022,646
Toll _________________ __ Apr. 9, 1912‘
upwardly or downwardly relative to said brackets, where
1,219,071
Bodnar ______________ __ Mar. 13, 1917
by said wheels may be selectively extended beneath or
2,464,503
Halley ______________ __ Mar. 15, 1949
2,735,130
Unsworth ____________ __ Feb. 21, 1956
retracted above a horizontal plane de?ned by the normal
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