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Патент USA US2134779

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W. Q_ F METZ
'
SAFETY DEVICE FOR CLOTHES WBINGEÉS
Filed March lO, 1933
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Patented Nov. 1, 1938
2,134,779
UNITED STATES> PATENT OFFICE'.4
2,134,779
SAFETY DEVICE FOR CLOTHES WRINGERS
William C. F.' Dietz, Cincinnati, Ohio, assignor
of one-half to Walter K. Voss, Davenport, Iowa
Application March 10, 1933, Serial No. 660,282
9A Claims.
This invention relates broadly to safety devices
for po-wer driven- clothes wringers used. in con
nection with washing machines and is more par--l
ticularly directed to the arrangement of a switch
i for breaking the electric circuit of the motor
forming the prime mover for the wringer, should
the operator be endangered by the operation of
said wringer.
Many types of power driven wringers now on
ll) the market are provided with safety devices of
which some are of the character whereby the top
roller may be released or’disengaged from the
bottom roller when the hand or clothes of the
operator gets caught between the rolls. This re
l lease of one of the rolls is sometimes sufficient
to avoid an accident but as the bottom roll, which
is usually the power roll and connected with the
motor, continues to rotate, danger is still present
in that should the hand or clothes of the op
- erator get caught or become wrapped around the
roll, serious injury may be the result.
Itis therefore an object of the present inven
tion to provide a safety device in the forml of
a switch which has its controlling element lo~
i cated on the wringer, within convenient reach
(Cl. (iS-253)
present application, as I find that this construc
tion isA particularly suitable for the operation of
the switch and its operating means, comprising
the present invention. It is understood however
that this switch arrangement may be installed for
operation on other types of wringers and when
so installed, the switch may be operable from
either side of the wringer.
For a further understanding of the invention,
reference is to be had to the following descrip~
tion taken in connection with the accompanying
drawing wherein:
`
Fig. 1 is a perspective view of a clothes washer
and wringer showing the installation and loca
tion of the switch comprising the present inven 15
tion;
»
Fig. Z is an enlarged fragmentary view of one
end of the wringer showing more clearly the ar
rangementV of the switch;
`
Fig. 3 is a vertical sectional View taken on the
line t--S of Fig. 2 showing the upper roll carry#
ing frame in a position rocked to one side;
Fig. 4 is a vertical sectional View taken through
the switch structure.
Fig. 5 is an end elevation of a wringer of the
of the operator and operable to break the cir
cuit ior the motor either independently of or si
multaneously with the release or separation of
>ordinary type showing the switch, forming a part
of the present invention installed for operation in
the rolls.
Another object is to provide a simple safety
device which does not require reconstruction or
rearrangement of parts forming the wringer and
associated mechanism but which may be installed
for operation on any standard type of wringer.
A further object of the invention is to provide
Referring more particularly to the drawing, the
a separable connection in the current carrying
cable leading from the motor, usually located be
low the clothes container of the washing machine,
to the switch arranged on the wringer and to
L20 which the present invention is directed in that
said separable connection will act as a relief and
prevent the breakage and damage of the cable,
should the wringer head be swung or continuously
rotated in one direction upon its mounting. The
separable connectionv also permits the removal of
the Wringer head from the washing machine for
shipping purposes without dismantling any of the
electrical equipment used in connection with the
switch.
1
In a patent issued to me, June 7, 1930, bear
ing No. 1,762,916, I show a wringer provided with
a safety device whereby the upper rollv carry
ing frame may be rocked to either side to separate
the rolls. This type of wringer and safety de
55 vice has been used for an illustration, in the
connection therewith.
ì
numeral I designates a conventional type of 30
washing machine equipped with a clothes wringer
2 driven and supported by mechanism 3 con
nected for operation with a motor unit 4 usually
located at the lower portion of the machine. The
wringer 2 which has been specifically described
in my aforementioned patent comprises a lower
rigid frame 5 in which is positioned a roller i5 ro
tated through the provision of the mechanism
3. Cooperating with the frame 5 and arranged
thereabove is a second frame ‘l which is rockable
to either side of the wringer and having its ends
provided with bifurcated spring clips 8 positioned
in seating engagement with spaced fulcrum pins
9 carried by the lower frame and which together
with said clips provide a connection between the
frames. Arranged on each side of the wringer is
a releasing plate l0, pivoted to the lower frame
5 as at Il and provided with cam projections l2 „
engaging the spring clips S adjacent one pair of
the pins 9. It will be seen that upon a slight
downward pressure on the part of either of the
plates IB the cam projections I2 thereof will
force one of the bifurcated ends of the spring
clips, situated at each end of the wringer, out
wardly until they will disengage> from' one set of 65
2
2,134,779
pins 9 thereby releasing the frame 1 from one
side of the wringer and due to the pressure of
the roll tensioning spring I3, arranged in the
upper frame, the lattery will be swung or pivoted
on the other sets of pins 9 to a roll separating
position, which swinging action of the frame has
been illustrated by dotted lines in Fig. 3 of the
drawing. As ther-eis located a release plate I0
on each side ofl thew?inger it will be understood
10 thatthe frame 1 'may be rocked to either side
as is obvious.
15
The construction so far described
to effect the disengagement of the upper frame
1 from the pivot pins 9 located nearest the oper
ator. The released frame 1 is now free to swing
on the oppositely located pivots, due to the action
of the roll tensioning spring I3, and space the
upper roll free from the lower power roll. This
swinging action of the frame 1 will cause the arm
25 to disengage the upper end of the plunger 20,
permitting the latter under the action of the
spring 21 to be elevated thus breaking the circuit 10
established through the contacts I1 and the wash
is that of the wringer shown in my prior patent
er 2|.
and therefore no claim is made thereto in this
will be checked by the engagement of the insulat
ing washer 22 with the upper sets of ñngers I8 of
the contact members. It will thus be seen that 15
not only will the rolls be separated by the opera
tion of a releasing plate I0 but this action will
also effect the breaking of the circuit for the
present case.
Although the arrangement just described pre
vents accidents in most cases, nevertheless, there
have been instances where the separation of the
rolls has not been sufficient to prevent injury to
the operator as in the case where the operator’s
20 clothes have been caught or become entangled
in clothes wrapped around the lower roll which is
driven by the motor and continues to rotate al
though the rolls are separated. It is therefore
desirable to provide means, whereby the power
may be shut off to the power driven roller, which
means should be so located on the wringer as to
be within the operator’s reach and so arranged as
to require no appreciable thought on the part of
the operator for its operation. The present in
vention provides for such means which will now
be described in detail.
Connected in the current carrying leads I4 of
the motor 4 and mounted upon the mechanism 3,
is a switch designated generally by the numeral
I5. This switch which is preferably of the push
button type is attached in any suitable manner
to the end frame of the wringer and located in a
vertical plane drawn through the longitudinal
axes of the rolls and arranged at one end thereof.
40 'I'he switch I5 which may be of any suitable size
and design includes an insulating base I5 having
mounted thereon a pair of spaced metallic con
tacts I1 bent to provide upper and lower fingers
I8 and I9 connected with current carrying leads
I4, leading to the motor and a source of electrical
45
energy respectively of which the latter may be a
house circuit (not shown). Positioned between
the contacts I1 and arranged for vertical sliding
movement is a plunger member 20 which is spring
pressed and carries a metallic washer 2I for en
gagement with the contact fingers I9 and ar
ranged above this washer is a second washer 22
yet effect the circuit breaking operation of the
switch. Also, upon restoring the tiltable frame
to its wringing operating position, the switch will
be automatically put in a position closing the
circuit for the motor.
In the form of the invention disclosed in Fig. 5,
the switch 29 has been shown installed in connec
tion with a wringer frame 3i! of the ordinary type 30
and instead of making use of the tiltable upper
frame, as in the first form, for controlling the
operation of the switch, bar members SI are ar
ranged longitudinally of the rolls and mounted on
each side thereof. The bar members are provided
with end pieces 32 which have their intermediate
portions thereof pivoted as at 33 to the end mein
bers of the wrínger frame and their inner ends
engaging or resting upon the upper end of the
plunger 34 of the switch. The switch in this in 40
stance is of such construction that when the
plunger thereof is in its normal elevated position,
the circuit for the motor is closed. It will there
fore be apparent that should the operator of the
machine move either of the bars 3| in an inward 45
direction, this would depress the switch plunger
and effect the opening of the motor circuit.
is in a wringer operating position, the arm 25
will hold the plunger 20 depressed against the
head is rotated one or more revolutions around
action of a spring 21 so that contact is made be
the upper end of the housing 36, wrapping the
cable therearound, such pull will be in a substan
Carried by one end of the upper wringer frame
1 is a plate 23 attached to the frame 1 by screws
55
or the like 24 and having its lower portion bent
outwardly into an arm 25 which is formed with a
depressed projection 2B engaging the upper end
of the plunger 20. Ordinarily, when the frame 1
tween the metallic washer 2| and the fingers I9
of the contact members I1. This will close the
circuit for the motor 4 which in turn effects the
rotation of the power driven roll 6 providing the
latter is connected therewith through the provi
sion of the clutch mechanism 28 usually provided
in connection with wringer constructions of this
kind.
In the operation of the wringer, it will be seen
that should the operator get his hand or clothing
caught between the rolls of the wringer, this sud
den jerk or action would bring his arm or body
75
motor. A novel feature of the device is the loca
tion of the plate, carrying the arm 25, and the 20
positioning of the switch I5 in that the frame 1
may be rocked to either side of the wringer and
An important feature of the invention is also
the provision of a separable connection 35 in the
current carrying cable I4 connecting the motor 4 50
with the switch I5. The connection 35 may be of
the customary two-part prong and socket ccn
struction usually found in wirings of this kind
and the lower part thereof is clamped in a sta
tionary manner to the shaft housing 36 forming 55
a part of the drive mechanism between the motor
and the wringer. It is tobe noted that the con
nection is located near the lower end of the shaft
housing so that if pull is exerted upon the cable
portion above the connection, as when the wringer 60
formed of insulating material.
60
The upward movement of the plunger
against the releasing plate I0 causing the same
tially straight upward direction effecting the easy
separation of the connection parts without break 65
ing or damaging the same or the cable. Another
advantage gained by the provision of the separa
ble connection is that the cable may be readily
disconnected when the wringer head is removed
from the washing machine for shipping purposes, 70
Although there has been shown and described
a particular type of switch construction, it is to
be understood that switches of other constructions
may be used equally as well and also, that the
switch may be positioned at other points than that 75
2,134,779
Shown and arranged for operation with variously
constructed manual controls.
What is claimed is :
1. In a wringer, a lower frame having a power
driven roller mounted therein, a one~piece upper
frame member provided with a cooperating roller,
said frame member being pivoted at each end and
to one side of said lower frame, locking means for
retaining said upper frame member in a normal
10 operating position, driving means for said rollers
including a motor, a spring opened switch in the
circuit for said motor positioned upon said lower
frame, means provided on said upper frame mem
ber for engaging said switch to hold it in a closed
15 position, and manually operable means adjacent
said rollers for releasing said locking means to
permit said upper frame member to swing to one
side of said lower frame and said switch to as~
sume an open position.
20
2. In a wringer, a lower frame having a power
driven roller mounted therein, pairs of pivots
carried by said frame on each side of the vertical
plane of the roller, a one piece upper frame mem
ber provided with a cooperating roller secured
25 to said pivots, means carried by said lower frame
for releasing said upper frame member from en
gagement with a pair of said pivots, a switch
mounted upon said lower frame, and an operat
ing member for said switch carried by said upper
30 frame member whereby said switch will be actu
ated to an open position upon movement of said
frame member on said pivots.
3. In a wringer, a lower frame having a power
driven roller mounted therein, an upper frame
member provided with a cooperating roller hori
zontally pivoted to said lower frame the pivots
for said upper frame member being offset from
the vertical plane of said rollers, a switch mount
ed upon said lower frame, and a switch operat
40 ing member carried by said upper frame member
and arranged to move said switch to an open
position upon pivoting movement of said frame
member.
4. In a wringer, a lower frame having a power
45 driven roller carried thereby, horizontally ar
ranged pivot studs carried by said frame in 01T
set relation to the vertical plane of the roller, an
upper frame member provided with a cooperating
roller supported by said pivot studs, a switch
50 member carried by said lower frame in spaced
relation to said upper frame member, and an
actuating member for said switch carried by said
upper frame member whereby movement of said
frame member on said pivots will raise said actu
55 ating member from engagement with said switch.
5. In a motor driven wringer, the combination
with a stationary lower frame, an upper frame
mounted for swinging movement to each side of
said lower frame about axes offset horizontally
60 from the vertical plane of said lower frame, a
single switch mounted on one of said frames, and
switch controlling means operated by the swing
ing movement of said upper frame to either side
3
of said lower frame to stop the driving operation
of said motor.
6. In a wringer, a lower frame having a power
driven roller mounted therein, a pair of pivots
carried by said frame on either side of the ver
tical plane of the roller, a one piece upper frame
member supported by said pivots and including a
cooperating roller journaled thereon, means car
ried by said lower frame for releasing said upper
frame from engagement with a pair of said pivots, 10
a switch mounted upon said lower frame, and a
controlling member for said switch carried by
said upper frame and movable therewith to a
switch open position upon movement of said
frame on either pair of pivots.
15
7. In a wringer, a lower frame having a power
driven roller mounted therein, an upper frame
member provided with a cooperating roller hori
zontally pivoted to said lower frame, the pivotal
axis of said upper frame being offset from the 20
vertical plane of said rollers, a switch mounted
upon said lower frame in the vertical plane of
said rollers, and a member carried by said upper
frame controlling the open and closed position
of said switch and movable to the switch open 25
position upon pivoting movement of said frame.
8. In a wringer, the combination of a wringer
frame including a head section pivoted on a lon
gitudinal axis and having a normal central posi
tion, wringer rolls mounted in said frame, means 30
by which said head section maintains said wringer
rolls under operative spring pressure, said means
being re1easab1e_ to relieve said operative spring
pressure upon movement of said head section in
either direction from said normal position, an 35
operating motor having driving connections for
rotating said wringer rolls, a circuit in control of
motor operation including switch means normally
biased to open position, and switch controlling
means engageable with cooperative `means on 40
said head section when said section is in the
normal position thereof to hold said switch in
circuit closing position and disengageable upon
movement of said head section in either direc
tion out of the normal position thereof to per 45
mit said switch means to be biased into open
position.
9. In a wringer, the combination with a lower
frame member having a power driven roller
mounted therein, a unitary upper frame member
carrying a cooperating roller, said upper frame 50
member being pivotally mounted on an axis to be
swingable to either side of the lower frame mem
ber, manually operated releasable means for
locking said upper frame member in a normal 55
operating position, driving means for said rollers
including a motor, a switch positioned in the
circuit for said motor, and means responsive to
the movement of the upper frame member in
either direction for effecting the operation of 60
said switch to break the circuit for said motor.
WILLIAM C. F. DIETZ.
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