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Патент USA US2118261

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May 24,v 1938.
Filed May 25, 1936
2 Sheets-Sheet 1
May 24, 1938.
2,118,261 ‘
F'iled May 25, 1936
2 Sheets-Sheet 2
__ 1;,‘ MM 51mm,
n at
Patented May 24, 1938
Eduardo Marzano, Rochester, N. Y.
Application May 25, 1936, Serial No. 81,612
1 Claim.
The invention has for its object the provision
of means attachable to any bed to permit the
patient to have toilet facilities in bed without
raising himself or disturbing his position.
Another object is the provision of means in
such a bed whereby the patient may displace a
section of the mattress and cause the bed pan to
move into place for use bylsimply tripping a lever
and simultaneously signalling the attendant that
10 the bed pan is about to be used.
A further object is the provision of cushioning
mechanism to prevent a violent shock to the pa
tient by the sudden tripping of the lever when
removing a section of the mattress to use the bed
15 pan.
Other objects will appear throughout the speci
In carrying out the invention, an opening is
formed, preferably in the center portion of the
mattress and in the bed spring ordinarily used to
support the mattress so that the two openings
register. A pair of rails are fastened to the
spring structure transversely of the bed, one on
each side of the opening. Cross bars are prefer
25 ably used to connect these rails to form a sub
stantially rigid main frame. A similar frame is
made to pivot at one end of this main frame
and to be releasably locked thereto at» the other
end of the main frame in a gate-like manner.
pulleys and cord which connects the bed pan to
its counterweight.
Fig. 5 is a perspective View of the bed pan car
Fig. 6 is a perspective view of the removable 5
bed pan normally placed in the bed pan carriage
shown in Fig. 5.
Fig. 7 is a bottom plan view of the latticed
frame to which is secured the removable section
of the mattress, the broken lines representing the 10
position of swivel locking lugs whenlocking this
latticed frame to the pivoted frame.
Fig. 8 is a fragmentary view of the pivoted
frame and locking lever in locked position.
The bedsteads I and 2 are of any suitable type ‘15
having supporting rails 3 for supporting the bed
spring 4. The type of bed spring shown in part
is of the ?at, slat and coiled spring type and
supports the parts of the invention in a resilient
The main frame is made up preferably of two
channeled rails 5 and 6, spaced from one another
and running transversely of the bed spring 4 and
attached thereto, preferably by being riveted to
several of the spring slats, and are positioned so M 5
as to lie one on each side'of the removable sec- '
tion 1 of the mattress 8. The ends of these rails
5v and 6 are preferably free.
The pivoted frame is likewise made up of two
rails 9 and H], one on each side of the mattress
30 Upon releasing the locking mechanism, the piv
oting frame swings open, taking with it the re _ section 7, preferably underlying the rails 5 and
movable section of the mattress thereby making 6. Cross slats Il may be placed transversely of
an opening through the mattress and spring. As rails 5 and 6 and transversely of rails 9 and It!
the pivoting frame continues to open it allows a to strengthen the frames.
The pivoted frame rails 9 and ID are slotted at 5
35 counterweight to drop, thereby drawing the bed
pan directly under the opening in the mattress the rear end as shown in Fig. 2 so as to be easily
and spring. A signal such as a bell or lamp is removed from the pivot rod Ha. on the main
frame and yet form a substantial pivot bearing
operated by the lock releasing mechanism.
The invention will be more fully explained in surface. This feature is provided for easy re
40 connection with the accompanying drawingsin moval of the section 1 from the latticed frame l2. 40
This latticed frame I2 is supported by the upright
which like numerals denote like parts.
Fig. l is a side elevation and sectional view of pillars l3 and I4 on rails 9 and It].
Locking and unlocking of the pivoted frame to
a bed with the removable mattress section in
place and the pivoted frame in closed position. the main frame is accomplished at the end op
Fig. 2 is an end sectional view and elevation of
a bed, the broken lines representing various
positions of the frame and bed pan. The bed
structure is nowhere fully shown, but is illus
trated only in sections to show the convenient
manner of attachment of the parts of the inven
tion to any bed.
Fig. 3 is a top plan view of a bed spring with
the frames attached.
Fig. 4 is a sectional view of one of the guide
posite the slotted end of the pivoted frame, pref- '45
erably by overhanging straps I5 and I6 keyed to
lock rod H, to which rod is also keyed a lock lever
l8. A 'cord l9 connects lock lever l8 with the
switch arm 38, of an electric switch 20 secured to
rail 6. The locking straps l5 and it are provided 50
at their lower extremities with bent lugs to slide
into arched straps 2| and 22 on the rails 9 and
l 0, respectively of the pivoted frame. Thus, when
lock lever [B is in lowered locked position, the
lock straps l5 and it are hooked at their lower 555
end within the latch space formed by the straps
type, operable in unison with the lock lever 18,
2| and 22 on rails 9 and Ill. When lock lever I8
whereby upon raising this look lever Hi to un
lock and release the pivoted frame, tension on
the switch cord 19 is also exerted on the switch
arm 38, and as this tension is increased by con UI
tinuing to raise lever l8, the switch arm 38 is
is raised in unlocked position, the lock straps l5
and i6 are released from the arched lock straps
2| and 22, thereby releasing the rails 9 and I0,
and thereby allowing the pivoted frame formed
by the rails 9 and II] to gravitate and open down
wardly in gate-like fashion. Lock rod H is piv
otally mounted through rails 5 and 6 of the main
frame, thereby forming a latch-lock arrange
ment between the main frame and the pivoted
Attached to the lock end of the pivoted frame
may be a pair of counterweights 23 and 24 acting
15 with the opening and closing of the pivoted frame
to cushion the opening shock thereof. These
counterweights are suspended from the slats of
the bed spring 4 by pulleys 25 and cords 26, the
cords 26 being attached to rails 9 and I6, respec
tively near the lock ends thereof.
The bed pan 2'! is normally placed within the
carriage 28. The carriage 28 is provided with lugs
29 to act as stops in abutment with the end edges
of rails 5 and 6, respectively to hold the carriage
25 in retracted position when the pivoted frame is
open, and this carriage 28 is further character
iZed by shoulders 30 and 3| on each side thereof
to act as bearings for sliding said carriage along
the horizontal surface of rails 5 and 6. There
may be aslotted handle 32 on the carriage 28 for
conveniently gripping the same in manually re
tracting or moving it.
Attached to carriage '23 through perforations
33 and 3!! are preferably two cords 35, on the
35 other ends of which is attached a counterweight
36. This latter counterweight rests normally
across the frame made by the two rails 9 and
iii of the pivoted frame in such manner that
when this pivoted frame is in locked position,
40 the counterweight exerts no pull on the cords
35 and carriage 28, but when the pivoted frame
is lowered in unlocked position as shown by the
broken lines in Fig. 2, the counterweight 3S
gravitates downwardly with the rails 9 and IE3,
.45 thereby exerting a pull on the cords 35 and
progressively moved into contacting position,
thereby energizing the signal circuit and the
bell or lamp or whatever may be the signal appa
ratus used in this circuit. When lever I8 is 10
again allowed to fall, switch lever 38 returns to
normal position and the circuit is no longer
closed by switch 25. The mechanical construc
tion of switch 20 is such that the spring contact
blades are connected by a pin when switch lever 15
38 is in the contacting position, and a coil spring
serves to force switch lever 38 into “off” posi
tion when tension on switch cord E9 is removed
by lowering lever IS.
The latticed frame l2 to which is tied the 20
removable section, 7 of the mattress 8 is secured
to the pivoted frame by swivel locking lugs 42,
which extend below the surface of the cross
slats d3 of the pivoted frame, and which said
lugs 42 may be turned diagonally when ?tted into 25
their respective slots to lock the frames together.
In operation, the invention is used as follows.
When the patient desires to use the bed pan
without rising or moving, he manually raises
lock lever is, which can be raised with. a very
Slight effort exertable by even a very sick patient.
Raising of lever 18 disengages locking straps i5
and is from arched lock straps 2i and 22, there
by releasing the pivoted frame. When released
one end of the pivoted frame opening in gate 3.5
like fashion drops toward the ?oor. In so doing,
the removable section 7 of the mattress 8 is
removed downwardly, being forced to- follow the
pivoted frame to which it is attached. Counter
weights 23 and 24 are drawn upwardly by the 40
cords 26 connecting these counterweights with
the locking end of the pivoted frame thereby re
tarding the velocity of fall of therpivoted frame
and obviating any violent shocks. If carriage
28 has been set by the attendant slightly ad 45
carriage 28, and causing said carriage, to slide
vanced so that its lugs 29 are not overhanging
inwardly on the rails 5 and 6 and to come to
the end edges of rails 5 and 6, it has been held
in retracted position by the upright pillars l3
rest directly under the opening in the mattress
8 which is open by reason of the removable
section 1 of the mattress 8 having been removed
by the pivoted frame to which said section 1
is attached. The proper adjustment of the
lengths of the cords 35 and cords 28 will insure
the proper amount of opening of the pivoted
frame and the proper registry of carriage 28
beneath the opening through mattress 8 and bed
spring 4. It is to be noted that counterweight
36 will draw in carriage 28 upon unlocking and
releasing the pivoted frame only if the carriage
28 has previously been set slightly advanced so
thatthe lugs ‘29 on the carriage 28 are not over—
hanging the edges of rails 5 and 6 respectively.
If these lugs 23 are overhanging the edges-of
these rails, then the carriage will not move upon
65 unlocking and releasing the pivoted frame, for
in such position these lugs 29 act as stops for
the carriage 28.
The pulleys 3? are preferably attached to the
inner vertical surfaces of rails 5 and 8 respec
70 tively near the pivot rod ii and serve to over
come friction of the cords 35 at these points.
The switch 20 is preferably used in circuit
with the signalling system of the hospital or
building where the bed is used. The type shown
75 here is of the momentary contact, spring released
and M supporting the removable mattress sec
tion 1 and also because counterweight 36 has 50
been suspended by rails 5! andlil. Now upon
opening of the pivoted frame these upright pil
lars i3 and M are moved downwardly with the
pivoted frame and no longer prevent the car
riage 28 from being carried along rails 5 and 5 55
by the pull exerted by failing counterweight 36.
When the pivoted frame reaches its open posi
tion an opening extends through the mattress
8 and bed spring £1, with the carriage 28 contain
ing bed pan 2? directly beneath this opening,
and the bed patient may use the facilities pro
Opening of the pivoted frame has sig
nalled the attendant, who in due course goes
to the patient’s assistance when finished, re
tracts the carriage 28, looks the pivoted frame 65
to the main frame thereby replacing the remov
able section 1 within the opening of mattress
The bed pan 27 may now be removed from
the carriage 28 and another put in its place and
the entire mechanism is ready to repeat the 70
While the preferred form of the invention has
been shown and described, it will be obvious that
various changes in the details of construction
may be resorted to for successfully carrying the 75
invention into practice without departing from
parallel rails and connected by straps to form
the scope of the appended claim.
Having thus described my invention what I
claim is:—
a supporting frame, the rails of said pivoted
frame being slotted at their pivot points to» facili
In a bed for invalids, a mattress and a bed
spring supporting the same, both being aper
tured to provide a continuous opening there
through, said bed spring comprising a frame and
spring structure carried by the spring frame and
10 adapted to provide a resilient support for the
mattress; a pair of substantially parallel rails
carried by the spring structure and extending
transversely of the bed spring on each side of
said aperture; a rod connecting said parallel
15 bars at one side of said aperture to form a pivot
pin; a pivoted framepivoted on said rod com
prising a pair of spaced substantially parallel
rails extending transversely of said aperture, and
substantially parallel with the ?rst mentioned
tate their disengagement from said rod for re
moval from the bed; a mattress section supported
by said hinged frame and adapted to ?ll said
aperture so as to form a continuous surface with
the mattress when the hinged frame is in closed
position; supporting channels attached to said
?rst mentioned parallel rails to support a bed 10
pan; locking means to facilitate opening and
closing said pivoted frame for removing or re
placing said mattress section within said aper
ture and shock absorbing means connected be
tween the bed spring and the pivoted frame to 15
cushion the opening movement of said pivoted
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