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Патент USA US3095245

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J1me 25, 1963
M. E. BABCOCK ETAL
‘ 3,095,235
HYDRAULICALLY OPERATED BED CHAIR
Filed Sept. 5 , 1961
4 sheets-Sheet 1
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INVENTORS
M42? 5. BABCocK
BY
/-/A 2040 5. 5A BCOCK
W47702405715”
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June 25, 1963
M. E. BABCOCK ETAL
3,095,235
HYDRAULICALLY OPERATED BED CHAIR
Filed Sept. 5, 1961
4 Sheets-Sheet 2
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INVENTORS
MAeY E. 54 BCacK
Y #42040 S. 5A5c0cl<
BWM
Arroe/wsv/s.
June 25, 1963
M. E. BAECOCK ETAL
3,095,235
HYDRAULICALLY OPERATED BED CHAIR
Filed Sept. 5, 1961
4 Sheets-Sheet 3
[50
77
53
I29
I27
76
I47
/40
I
14s
_______
9.96 100
9”’ 23'
BY 14/422040 S. BABCOCK
Arman/e 71$.
J1me 25, 1963
M. E. BABCOCK ETAL
3,095,235
HYDRAULICALLY OPERATED BED CHAIR
Filed Sept. 5, 1961
4 Sheets-Sheet 4
I40
[42
/4/
I35
127
INVENTORS.
MAZY5=5A5C0CK
BY M42040 5. 5A5COCl<
I
//
United States Patent 0 ” C6
Patented June 25, 1963
1
2
3,095,235
FIGURE 11 is an enlarged detail sectional view show
ing the means for locking any of several telescopic ele
ments of the device; and
HYDRAULICALLY ()PERATED BED C
Diary E. Bahcock and Harold S. Babcock, both of
56740 Delft Ave., South Bend, Ind.
FIGURE 11A is a detail sectional View to a still larger
scale showing the opposite side of the means for locking
any of the several telescopic elements of the device.
Similar reference characters refer to similar parts
This invention relates to a hydraulically operated bed
throughout the several views of the drawing.
chair and more particularly to a device which is adapted
Having reference now to the drawings in detail, the
for the use of invalids or other incapacitated persons.
10 device of the instant invention is comprised of a pair of
A primary object of this invention is the provision of
parallel side frames, each of which includes a lower hori
an improved bed chair which may be readily converted
zontal supporting member 2i) and a pair of intermediate
Filed Sept. 5, 1961, Ser. No. 135,867
3 Claims. (Cl. 297-68)
from a bed to a chair or vice versa with the weight of the
tubular uprights 21. The tubular uprights 21 are con
patient remaining on the seat.
nected to the ends of the horizontal member 20 by angu
Still another object of the invention is the provision of 15 larly inclined front and rear pieces 22 and 23, respectively.
a device of this character wherein the raising and the .
lowering of the seat portion to convert from bed to chair
or chair to bed is achieved by hydraulic means.
A further object of the invention is the provision of a
device of this character provided with adjustable head,
foot and arm rests which may be readily conformed to
the user in either a sitting position or a reclining position.
At their extremities each front and rear piece terminates in
a veritcal member 24 and 25, respectively. Each member
24 and 25 supports a swivelably mounted wheel yoke 26
and 27, respectively, and each yoke carries a rubber tired
wheel 28. Wheel brakes 29 are provided on each rear
wheel support 27 and are operated in a manner to be more
fully described hereinafter.
A further object of the invention is the provision of a
The side frames are connected adjacent the ends of
lower frame members by transverse tubular bars 30 and
such, for example, as the arm rest which may be replaced 25 31 to provide rigidity to the supporting frame.
by a tray and a foot rest which may be replaced by stir
Connected to the inclined members 22 and 23 are in
device of this character having readily replaceable parts,
rups or the like.
wardly converging supports 32, each of which terminates
A further object of the invention is the provision of a
device of this character wherein the conversion or adjust
ment may be accomplished with a minimum of effort and
in a vertical end portion 33. The end portions 33 serve
as corner supports for a plate or plat-form 34. Platform
difficulty.
Still another object of the invention is the provision of
a bed chair of this character which is sturdy and durable
in construction, reliable and e?icient in operation, and
relatively simple and inexpensive to manufacture.
Still other objects will in part be obvious and in part
be pointed out as the description of the invention proceeds
and shown in the accompanying drawings wherein there
is disclosed a preferred embodiment of this inventive con
cept.
In the drawings:
FIGURE 1 is a side elevational view of one form of
bed chair embodying elements of the instant invention, an
alternative position of adjustment being indicated in dot
ted lines.
34 supports a guide cylinder 35 which has slidably
mounted therein a vertical piston 36 which in turn serves
as a support for a seat supporting frame member 37 upon
which is mounted a seat cushion 38. A hydraulic cylinder
39 carries a piston 46 which, when actuated, serves to
35 raise and lower the frame member 37 and, therefore, the
seat cushion 38. An operating lever 41 extending through
a bracket 42 carried by one frame member 26 serves to
actuate the hydraulic cylinder, by controlling admission
of fluid, the cylinder or jack being operated by foot pres
40 sure on a foot pedal 45.
The pedal 45 is attached to‘ an
offset portion 46 of a lever 47 which is pivoted as at 48
to a link 49 extending from a frame member 30. A rod
56 extends from an intermediate portion of the lever to
a jack cylinder 51, and movement of the foot pedal 45
45 thus actuates the cylinder 51 to force ?uid into the hy
FIGURE 2 is an enlarged sectional view taken sub
draulic cylinder 39. It is pointed out that there are two
stantially along the line 2—2 of FIG. 1 as viewed in the
foot pedals 45 and two levers 47 so that the device may
direction indicated by the arrows.
be actuated from either side. The levers 47 are connected
FIGURE 3 is an enlarged sectional view taken sub
by a transverse member 52, as best seen in FIG. 2.
stantially along the line 3—3 of FIG. 1 as viewed in the 50
As best shown in FIGS. 1 and 2, the brakes 29 are
direction indicated by the arrows.
operated by brake rods 53 which extend through sleeves
FIGURE 4 is an enlarged sectional view taken substan
54 carried by rear upright members 25, and which are
. tially along the line 4—4 of FIG. 1 as viewed in the direc- _
spring biased upwardly by means of springs 55. Cams 56
tion indicated by the arrows.
are mounted on a transverse rod 57 which may be moved
FIGURE 5 is an enlarged sectional view taken substan 55 by either of two foot pedals 58 to force the brakes 29 into
tially along the line 5-5 of FIG. 1 as viewed in the direc~
contact with the associated wheels 28.
tion indicated by the arrows.
The front end of the seat frame may be tilted by a
FIGURE 6 is an enlarged rear elevational view of the
rack 69 which is secured to ‘a transverse rod 61 extending
device taken substantially along the line 6—6 of FIG. 1
across the seat supporting frame 37 and which is raised
as viewed in the direction indicated by the arrows.
60 or lowered by means of a gear 62 which is driven by a
FIGURE 7 is a fragmentary side elevational view of a
shaft 63 from within a gear box 64, the gear :box con
tray which may be substituted for portions of the device.
taining a worm 65 which is driven by a shaft 66 and
FIGURE 8 is a plan view, taken substantially along the
which carries a suitable pinion (not shown) and a gear
line 8—8 of FIG. 7 as viewed in the direction indicated
box 67, the pinion being driven by a worm 68 which is
by the arrows, certain concealed parts being indicated in 65 carried by a shaft 65 which in turn is rotated by a hand
dotted lines.
wheel 7 (i.
FIGURE 9 is a side elevational view of a further part
The forward end of the seat supporting frame 37 has, as
which may be substituted for the foot rest of the instant
best shown in FIG. 4, a depending U-shaped bracket 74,
invention.
through the ends of which extends a pivot rod 75. A
FIGURE 10 is an end elevational view of the structure 70 pair of leg rests are pivotally mounted on the pivot rod or
of FIG. 9 taken substantially along the line Iii-10 as
viewed in the direction indicated by the arrows.
shaft 75, each leg rest comprising a pair of longitudinally
extending tubular members 76 connected :by transverse
3,095,235
3
members 77. Each of the tubular members 76 terminates
in an apertured projection 73 through which the shaft
75 extends. Each of the tubular members 76 has inserted
therein a telescopic rod 79 which comprises a portion of a
vfoot rest, the foot rest comprising a plate St} having a pair
of upstanding lugs 81 which ‘are pivoted as by pivots 82
to the ends of telescopic members 79, the arrangement be
ing ‘such that the foot rest may pivot to the dotted line posi
tion disclosed in FIG. 1 or be extended to the full line
position. 1. e leg rest may similarly be pivoted about the
pivot rod 75 to 1a horizontal position when the device is
employed as a bed. The leg rests are provided with
cushions 83.
The inner telescopic members 79 are each provided with
a series of openings 85, ‘as shown in FIGURE 11, into 15
which the nose at one end of a latch 86 is adapted to
be inserted through an opening 87 in tubular member 76.
This latch is pivotally mounted on a bolt 88 between
parallel lugs 39, which are welded to the tubular member
75. At its outer end the latch is formed with a ‘rounded
thumb piece 85a. A V-spring 96 has right angle ends, one
of which abuts the underside of the latch member 86- ‘and
the other ‘of which abuts the tubular member 76 and at
its bend a loop of one or more complete turns, which
loop surrounds the pivot 88. The latch 86 serves to lock
the tubular members 79 and 76 against relative axial
movement, the spring 99 biasing the latch with the nose
I d
of the back strap 113 to same; similarly, in rear elevation,
as shown in FIGURE 10, each side strap 115 is curved
inwardly from the attachment of the back stop or back
rest 113, and then outwardly to its juncture with the elon
gated rod 114.
It ‘is contemplated that the elongated
rods 114 carrying the heel rests 112 will be inserted
in only tube 1114.
If desired, the seat cushion 33 may be provided with a
removable center section 38a, as shown in dotted lines in
FIG. ‘1, and the seat supporting frame 37 with an aligned
removable center section (not shown), which aligned
sections are positioned forwardly from the back support
116, now to be described. The aligned removable cen4
ter sections or" the seat cushion 33 and the seat supporting
frame 37 provide for the placement of a bed pan (not
shown), which rests on the supporting frame 115 and
beneath the seat support 37.
A back rest is provided and ‘comprises a cushion 116
which is carried by two tubular‘ members'117, each of
which is pivoted as by means of a pivot 118 to an arcuate
arm 1119 which in turn is pivoted by pivots'120 to projec
tions 121 which extend from the seat support 37, all as
best shown in FIG. 6. A transverse bar 125 extends across
aligned intermediate points of the back members 117 and
is provided with lugs 126 to which vertical members 127
are secured as by means of pivots 128.
These vertical
members 127 engage telescopically in tubular members
129, which latter ‘are pivotally mounted by being secured
in the ‘aligned openings 35 and 87 in the tubular members
79 and 76, respectively. This form of latch is also used
at their lower ends to a rotatable sleeve 13€lwhich sur
in other places on the bed chair, both in the upright and 30 rounds the transverse tubular bar 31, as shown in FIG. 2.
in the inverted position, and is referred to in general by
Latches 91d are provided between the outer tubular mem
the reference numeral 91, which will be ‘duplicated herein
bers 129 and the inner tubular members 127, these latch
after in other locations where the latch is utilized. Where
members being substantially identical with the latches 91
the latch is used in the horizontal position, or in a posi
previously described. By releasing the latch members
tion inclined with respect to the latter, the spring 9%} serves
91d, the assembly comprised by the seat cushion 38,
to bias the latch with its nose in the aligned openings
foot rest 80, and the back rest 116 may be swung to
35 and 87 in the tubular members 79 and 76, respectively.
the position shown in dotted lines in FIG. 1.
In order to hold the foot and leg rests in extended or
U-shaped side rests 135 are secured in sockets 1136
horizontal position pivoted links 92 are provided as best
carried by members 137 ‘and are held releasably in posi
shown in FIG. 3. The links 92 are attached by pivots 93 40 tion by means of set screws 138.
V
to the ends of telescopic members 94 which engage in
A head rest 140, which is also cushioned, is pivoted
.tubular ‘members 95, the latter in turn being pivoted as at
by means of pivots 141 to lugs 1142 which project from
96 to lugs 97 carried by the frame 37, all as best shown
the top of back rest 116 and is held adjustably in posi
in FIG. 3. Latches 91a identical to the latches 91 engage
tion by means of a ratchet bar ‘14-3 which is pivoted, as by
similar holes in the telescopic members 94 to hold the
means of a pivot 144, to a projecting lug 145 extending
members and‘ hence the foot rests 8%) in extended or 45 from the back of the head rest. The teeth on bar 130
horizontal position.
Cushioned arm rests 98 are carried by U-shaped mem
bers 99, these rests being mounted on rods 1% which ex_
tend into the open ends of vertical uprights 21. Latch
members 91!) identical to the latches 91 are provided for
holding the arm rests in a selected height of adjust
ment.
or 143 are engageable on a pivoted lug 146 which is car
ried by an arm 147, which is ?xedly secured to a plate
143 carried by transverse bar 125. The angular posi
tion of the head rest 141} relative to the back rest 116 may
thus be varied ‘from a completely horizontal position
to either a rearwardly inclined position, as shown in full
‘lines in FIG. 1 or a raised position as shown in dotted
As best‘shown in FIGS. 7 and 8, the rods 1% may be re
lines in FIG. 1.
'
moved from tubular members 21 and other vertically po
The ends of the two tubular members 117 are curved
sitioned rods 101 substituted therefor. The rods 1&1 carry 55 outwardly as at 159 and provided with rubber grips 151,
a tray generally indicated at 102 which includes telescopic
which facilitate the manual propulsion of the bed chair
members 103 which ‘are slidably received in tubular mem
when employed as a chair.
7
.
bers 11M carried at the extremities of uprights .1111. Tu
From the foregoing it will now be seen that there is
bular members 104 ‘are provided with latch members 91c
herein provided an improved combination bed chair in
which engage at suitable openings in the telescopic mem 60 which the back ‘assembly comprised by the back rest 116
bers ‘103. At the extremities of members 163 reverted
and the head rest 14%} may be set in any one of several
ends 105 have pivotally secured thereto as by pivots
106, array rest 197. The angle of the tray rest 107 may be
altered by a ratchet member 108 which engages a suit
positions between that shown in dotted {lines and that
shown in full lines in FIG. 1. The leg rest $3, seat cushion V.
38 and back rest 116 may be aligned and positioned at
able detent 169 carried by the members 1415 and which is 65 a slight negative acute angle with respect’ to the horizontal '
pivoted at 110 to the underside of the tray rest to vary the
plane and the head rest 140 at a slight positive acute angle.
angular inclination thereof.
In this position the foot rests 80 may be either folded
1 As best shown in FIGS. 9 ‘and ‘10, heel rests generally
beneath the leg rest 83, as shown in dotted lines in FIG.
. indicated at 112 may be substituted for the arm rests 98.
Each heel rest is securedrto one end of an elongated 70 1, or swung to their open positions, as shown in full’ lines
in FIG. 1. With the head rest 140 in the same relative
rod 114. The heel rests are each comprised by a back
angular position, the leg rest 83, seat cushion 38 and
strap 113 and two oppositely facing side staps 115. ‘In
back rest 116 may be moved to an approximately horizon
side elevation, as shown in FIG. 9, each side strap 115 is
tal position. In such position the head rest 146 may be
curved outwardly and forwardly from its juncture with the
elongated rod 114, and then inwardly to the attachment 75 aligned with the leg rest 83, seat "cushion 38, and’ back rest
3,095,235
6
5
and foot rests removably and pivotally secured to said leg
116. With the leg rest 83, seat cushion 38, back rest
116, and head rest 140 so aligned, they may be jointly
moved to positions inclined at either small or [large posi
tive acute angles with respect to the horizontal plane.
Another position is that the leg rests 83 and seat cushion
38 may be aligned and inclined at a slight negative acute
angle with respect to the horizontal plane and the back
supports.
2. In 1a bed chair, the combination of a frame, caster
wheels supporting said frame, brake means for said caster
wheels, a platform disposed ‘centrally of said frame and
being dependingly carried and supported thereby, an hy
draulic cylinder carried by said platform, a piston in said
cylinder, a ‘seat support positioned upon and carried by
rest 116 and head rest 140 may be inclined at a positive
said piston, an hydraulic jack for raising and lowering said
angle of 45° with respect to the horizontal plane. A
variation of this position is leg rests 83 may be dropped 10 piston, a guide ‘cylinder on said platform, a guide piston
secured to said seat support and engaging in said guide
down to the position shown approximately in full lines
cylinder, a foot operated pumping lever for actuating said
in FIG. 1.
hydraulic jack, a back rest pivotally secured to said seat
In the position shown in FIG. 1, either leg rest 83 may
support, a head rest pivotally secured to said back rest,
be set in the position shown in dotted lines and either leg
rest in the position shown in full lines.
15 leg supports pivotally secured to said seat support, foot
rests removably and pivotally secured to said leg sup
The position shown in FIG. 1 is substantially the up
right position. This may be varied by aligning .the back
ports, said leg supports comprising a pair of longitudinally
rest 116 and head rest 140 and moving same to a positive
extending tubular members connected by at least one
transverse member and a cushion positioned thereupon,
angle of approximately ‘60° with the horizontal plane. At
the same time the leg rests 83 will be shifted to a positive 20 ‘said foot rests being pivotable to a position ‘disposed be
tween the .tubular members and the cushions of said leg
angle of approximately 30° with respect to the horizon
supports and being completely removable from said leg
tal plane.
The seat supporting frame 37 ‘and seat cushion 38 may
be tilted forwardly and the leg rests 83 ‘dropped against
the front tubular bar 30 to assist the patient in getting into 25
supports, and manually operable geared means for vary
ing the angular inclination of said seat support.
3. In 1a bed chair, the combination of a frame, caster
Wheels supporting said frame, brake means ‘for said caster
and out of the ‘chair. In ‘this position the foot rests 80
wheels, a platform disposed centrally of said frame and
will be folded beneath the leg rests 83, as shown in dotted
being dependingly carried and supported thereby, an hy
lines in FIG. 1. As soon however as he has gotten into
dnaul-ic cylinder carried by said platform, a piston in said
the chair, the foot rests will be moved to their extended
positions as shown in full lines in FIG. 1.
30 cylinder, a seat support positioned upon and carried by
said piston, an hydraulic jack for raising and lowering said
In the position in which the leg rests 83, seat cushion
piston, a guide cylinder on said platform, a guide piston
38, back rest 116 and head rest 140 are aligned and hori
secured to said seat ‘support and engaging in said guide
zontal, and with one side rest 135 folded down, the bed
cylinder, a foot operated pumping lever for actuating said
chair is arranged for removing a patient from a hospital
bed to the bed chair or vice versa.
35 hydraulic jack, a back rest pivotally secured to said seat
support, a head rest pivotally secured to said back rest,
leg supports pivotally secured to said seat support, foot
In all of the described positions the chair can be raised
or lowered by operation of the hydraulic cylinder 39.
rests removably and pivotally secured to said leg supports,
From the above it can be seen that the hydraulically
said leg supports comprising a pair of longitudinally ex
actuated bed chair according to the present invention may
be employed either in ‘a full ‘horizontal position as a bed, 40 tending tubular members connected by at least one 1113;115
ver-se member and a cushion positioned thereupon, said
or in position as a chair, which is provided with adjustable
foot rests being pivotable to a position disposed between
back and head rests, leg and foot rests, arm rests, and side
the tubular members and the cushions of said leg supports
bars, and which is also provided with auxiliary attachments
which render the same capable of a Wide variety of uses.
It will also be seen that there is herein provided a device
which ‘accomplishes all the objects of this invention, and
others, including many advantages of great practical util
ity and commercial importance.
and being completely removable from said leg supports,
manually operable geared means for varying the angular
45 inclination of said seat support, said frame including tubu
lar uprights and arm rests telescopically mounted on said
uprights, and reversible side supports removably secured
to said back rest.
As many embodiments may be made of this inventive
concept, and as many modi?cations may be made in the 50
References Cited in the ?le of this patent
embodiment hereinbefore shown and described, it is to
UNITED STATES PATENTS
be understood that all matter herein is to be interpreted
347,024
Bonnefoy ___________ __ Aug. 10,
merely as illustrative, and not in a limiting sense.
We claim:
472,372
Leonard ______________ __ Apr. 5,
Murphy _____________ __ Nov. 16,
1. In a bed chair, the combination of a frame, caster 55 1,607,168
2,030,635
Horwitt et al. ________ __ Feb. 11,
wheels supporting said frame, brake means for said caster
1886
1892
1926
1936
wheels, a platform disposed ‘centrally of said ?ame and
2,653,649
being dependingly carried and supported thereby, an by
draulic cylinder carried by said platform, a piston in said
2,769,483
Peterson ______________ __ Nov. 6, 1956
2,984,294
Epstean _____________ __ May 16, 1961
3,010,121
2,020,085
3,038,174
Breach ______________ __ Nov. 28, 1961
Russell ___________ __,____ Feb. 6, 1962
Brown et al. _________ __ June 12, 1962
260,525
628,965
Germany _____________ __ June 2, 1913
France ______________ __ July 12, 1927
477,188
80,259
Canada _____________ __ Sept. 25, 1951
Denmark ___________ __ Dec. 12, 1955
cylinder, a seat support positioned upon and carried by 60
said piston, tan hydraulic jack for raising and lowering
said piston, a guide cylinder on said platform, a guide
piston secured to said seat support and engaging in said
guide cylinder, a foot operated pumping lever for actuat
ing said hydraulic jack, a back rest pivotally secured t)
said seat support, a head rest pivotally secured to said back
rest, leg supports pivotally secured to said seat support,
Linquist _____________ __ Sept. 29, 1953
FOREIGN PATENTS
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