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Патент USA US2547829

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vApril 3, 1951
Filed Dec. 1, 1945
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April 3, 1951
Filed D60. 1, 1945
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3 Sheets-Sheet 2
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April 3, 1951
Filed Deo. l, 1945
3 Sheets-Sheet 3
v Patented Apr. 3, 1951
. 2,547,827
.ons A. Logan, Kansas city, M0.
Application .December 1, 1945, Serial No. 632,207
, '-
-2 Claims.
(ci. 5-64)
This invention `relates to improvements Viin 4in-`
valid and'hcspital beds.
conventional form.
Resilient elements or mat-.
tresses 28 and'30 having supporting frame 29 dis
posed respectively .adjacent the head and foot of
the'bed are 'hinged at their inner ends `at 32 and
34 to the side rails 26 for tilting lengthwise of
y The principal object of ïthe present invention
is to -provide a hospital bed with a mattress hav
ing ‘a central cross section that is vertically ad
justable and universally tiltable ‘for adjustment
the bed. Theouter ends are provided with any
of the usual means for raising and lowering, not
shown. p A transverse centrally disposed resilient
relative to the body sections of the mattress.
’ Another object "of 'the invention is -to provide \
section that is mechanically ‘movable to facili
tate V‘the positioning of 1a bedpan beneath :the
mattress section 36 positioned between mattress
sections 26 and 3g extends entirely across the
bed and is carried for vertical adjustment by
patient with :a minimum lef vincoimfenien'ce to the
side rails 26 .as hereinafter described.
a hospital bed havingY a' mattress Vwiithja central
A'housing 38 comprising side walls '46 :an
" end walls 42 which are secured to the side rails
' A furtherfobäìect isthe‘provisi'on of a mat
tress for an invalid 'bed hav-ing a central trans
verse section that is mechanically `operable >fur
universal adjustment relative to the #main tbodyl
26 extends downwardly from the `side rails `and
serves as supports for 4means for raising and low
ering .mattress 3.6..
A :rectangular frame »44 vserving to vsupport -a
rectangular frame 46 having springs 48 for sup
Another object of this invention 'is the provi~
sion -oi an 'invalid bed Vhaving a manually ïopere» 20. porting mattress section 36 is carried cn the
upper ends of lazy-tong bars 50 .and 52 which
ablefcentral mattress section provided-with means
portions ofthe mattress.
whereby it vis »operable by> the patient >positiçmed
are connected for free movement to .frame 44
on the mattress.
by pivotally mounted links 54 engaging with lugs
Other objects are simplicity and-’rigidity .of
5,6 integral with the frame.
construction, ease and accuracy `of foperation,
The lower ends of -bars 50 and 4‘52 'are respec
andy adaptability for .usewith the various types
of invalid beds 'having tilting .mattress sections.
With these objects in view as well as ¿other
objects which will appear during the course of
the speciñcation, reference will be had to the
tively pivotally connected with nuts 58 opera->
drawings wherein:
tively mounted von threaded sleeves 60 and 62
which are iìxed .to operating .shaft -64,.rotatably
mounted in bearings 66 fixed to end walls 42 of
housing 38. The threads 68 of sleeve 6.0 arev
30 right-hand and the threads ‘Ill -of .sleeve .62 are
left-hand, so that as the shaft is rotated the
Figure 1 is a side elevation of aninvalid bed
embodying't‘his invention.
nuts. `5.8 will be moved in iopposite directions to
Fig. 2 is an end elevation of the bed.
>'view taken’on line III-III of Fig. 1.
i Qperate the lazy-tongs.
Fig. `3 is> an ‘enlarged fragmentarylvseetional
'35 .their Y.ends to a rod, 12 which extends through
...Fig 4 .is .an enlarged sectional view taken on'v
line IV--IV of Fig. 1 with Vsome of ¿the parts shown
in elevation.
.on line 'V-’V of Figf4 with parts show-n in -e'le
. YFigli is .a view similar to
shown in Fig. 4
with 'the central mattressA section 36 lowered a
distance below the end mattress sections.v
Fig. _7 is a horizontal sectional view taken on
guide slots ’i4 formed 'through side walls 4D of
housing 33 whereby the lazy-tongs 5D and 52
l at -opposîte sides of frame 44 are guided.
Fig. '5 is a fragmentary sectional View 'taken .
_The .bars 150 and 152 are »pivoted intermediate
ig. :8 is Va sectionalview takenon .line VIII
ierring to Fig.' 7 it will be noted the nuts 58 each
have projecting .arms 86 with end trunnions .8,2
for respeetivsly receiving .the ends of bars 5B,
and `52.; Yfurthermcre, a pair of .guide rods >6.4
supported at their ends in end walls 42 and dis
posed in parallel ’relation with »shaft 64, pass
through holes 86 formed through arms 80 where
by the lazy-tongs are .secured against rotation
"about shaft '64. At ¿both sides of housing 2_8
the ends ofshaft 64 extend through Walls- 42 and
are provided with iixed ratchet wheels 88 which
Fig. 9 is a sectional section'of lazy-tongv frame
and ‘central mattress section frame showing the 50 serve as collars to preclude longitudinal move
VIII of Fig. 4.
relative tilting of the parts.
l l
. Throughout the several views like reference
characters refer to similar parts and the nue
meral 20 designates a bed frame having head
ment of the shaft in the frame and also serve to
facilitate ratcheting of the shaft as hereinafter
The lazy-tong structures just described for sup
member 22, foot member 24 and side rails 26 of 55 porting mattress section 36 at diiîerent vertical
positions relative to the head and food mattress ,
sections 28 and 30 is so constructed that it will
frame 44 with its end resting against the under
always maintain the supported mattress against
wardly in the nut it will raise the mattress carry
ing frame to tilt the mattress relative to the head
and foot mattress. Any single adjusting screw |20
may beoperated to tilt any particular corner o!
accidental movement. This is apparent because
the weight applied to the mattress willnot trans
mit any force to the nuts 58 that would tend to
rotate operating shaft 64. Means for operating
side of frame 46.
As the screw is turned up
the mattress or two or more of the screws may be
shaft 64 are shown and include three different
adjusted to obtain tilting of the mattress at vari
structures that might be used. It will be noted
ous angles. While only relatively slight tiltings
may be obtained by the structure shown, how
that operating shaft 64 is provided at each of its 10
ever, these adjustments are intended primarily
opposite ends with squared sections 90 which
to add to the comfort of the patient due to change
project beyond the ratchet wheels 88. The
in position or parts of the body to relieve fatigue
simplest means for raising and lowering the
and to stimulate circulation. For convenience of
movable section of the bed is the crank 92 which
may be adjusted on either of the square ends 90 15 operating screws |20 it will be noted that windows
|24 have been cut in the end walls 42 of housing
of the shaft whereby to rotate operating shaft 64
manually to adjust the height of the movable
From the above description it is quite evident
section. When the crank 92 is not needed it may
that the present transverse mattress section 36
be removed and positioned out of the way.
A ratcheting means best shown in Figures 4 20 may be positioned vertically or tilted in any de
sired direction to conform to the foot and head
and 8 is provided so that one lying on the bed
mattresses 30 and 28 as they are adjusted on
may grasp and oscillate a lever 94 to cause a
ratcheting movementof the operating shaft in
their hinges for the positioning of the patient.
Furthermore, by the manipulation of this center
either direction. Lever 94 is provided with a
round opening 96 for rotation on the squared end 25 mattress section, the bed pan may be easily posi
90 or operating shaft 64 and carries a Y-shaped
tioned and removed without the usual discomf
fort to the patient.
pawl member 98 by means of pivot |00.
What I claim as new and desire to protect _by
Referring to Figure 8 it will be noted that the
Letters Patent is:
' -;
Y pawl member 98 is inverted with the upper end
1. A hospital bed having a pair of lazy-tongs
thereof pivoted at |0| to'a rod |02 which passes 30
operatively carried by said bed, a central trans
through a transverse lug |04 integral with lever
verse framecarried by said lazy-tongs for vertical
94. When the pawl and rod are in the position
adjustment, a mattress carrying spring frame
shown in Figure 8 the engaging tooth | 06 of said
carried by said transverse frame, and adjusting
pawl will operatively engage the teeth of ratchet
wheel 88 so that by simply oscillating lever 94 35 screws carried by said transverse frame operable
to engage and tilt said spring frame relative to>
the operating shaft may be rotated in one direc
said transverse frame.
tion. During the idle stroke of thelever the en
2. A hospital bed having a bed frame, a pair 01:
gaging point tooth will ratchet over the ratchet
lazy-tongs -operatively carried by said bed frame,>
teeth of wheel 88 due to the force exerted by
a central transverse frame carried by said _lazy-V
spring |08 mounted on rod |02 between lug |04
tongs, a mattress carrying spring frame carried
and the pivotal head of the pawl member. It is
by said transverse frame, a rotatably mounted
quit-e lapparent that the operator may flip the
shaft carried by said bed frame operable to cause
upper end of rod |02 beyond the center whereby
said lazy-tongs-to raise and lowerfwhereby said
the engaging tooth V| I0 of pawl 98 will be lowered
spring frame is vertically adjusted, and manually
to engage the teeth of ratchet whee1 88. The op
operable adjusting screws carried by said trans
erator may then be able to rotate the operating
verse frame and operable to tilt said spring frame
shaft 64 in the opposite direction. This ratchet
relative to said transverse frame.
mechanism may be easily removed or positioned
on shaft 64.
» u oTIs A. LOGAN. .Q
A power means for raising and lowering the bed 50.
section comprises- a motor ||2 driving a belt
Wheel | I4 which is operatively connected through
references are of record in the
belt | I6 with a belt wheel | I8 rigidly attached to
í'lle of this patent:
operating shaft 64. Since it is necessary to both
raise and lower the movable section it would be 55
necessary to provide a motor of the reversible
Referring to the rectangular frames 44 and 46
best shown in Figures 3 and 4 it will be noted that
both are made of angled iron and that the upper 60
frame 46 normally telescopes with the lower frame
44 and rests thereon to carry the mattress 36.
It is one of the principal` features of this inven--
tion to provide limited universal adjustment of
the mattress carrying frame 46 relative to the 65
frame 44 which is carried by the lazy-tongs. An
adjusting screw |20 is operatively mounted in a
>threaded nut section |22 adjacent each corner of
Uhde ____ __‘___;.____ July 27, 1886
Bickle ___________ _- June 25, 1895
Flanders _________ -_ Apr. 16, 1907
Mitchell __________ -_ Sept. 7, 1909
Trickey et al ..... __ Sept. 21, 1909
Jones et al _________ __ Nov. 1,1910
Holme ___________ __ Feb. 16, 1943
Date î
. 7,871
Great Britain v______f__=Apr. 1, 1912
>Germany _________ __ Jan. 9,1936-
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