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Патент USA US2292933

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Patented Aug'. 11, 1942
2,292,933 v_
Nicholas L. Etten, waterloo'. le“
AApplication May 13, 1937, serial No. 142,4os
2 claims. _ (Cl. «ss-263)
' anism in a position when the pressurevhasbeen
This invention relates to safety mechanisms for
domestic clothes wringers and more particularly
toquick release devices for releasing the pressure '
exerted' between thel wringer rolls and permitting
the rolls to separate.
released or, in other words, when the parts are
in' a position for resetting the pressure:
Fig. 5 'is a section of a fragment taken sub- I
The invention is peculiarly 5 stantially along the line V--V of Fig; 3; _
applicable to wringers of the type employing a
releasable top frame and wherein the spring orsprings for 'exerting pressure on the rolls is or
Fig. 6 is a section of a fragment taken alon
the line VI-V'Iof Fig. 2;- ‘
Fig. 'I is a section ofï a fragment taken along
are carried by or held down by such frame.
the line VII-VIIof Fig. 2 ; and
A primary object of the invention is to provide 10
a relatively simple and inexpensive mechanism
whereby an operator of the wringer, in the case
Fig. 8 is -a fragmentary end elevation of either
end of the wringer top frame member, both ends
being substantially alike.
of an emergency, may immediately eil’ect the
The wringer comprises spaced side frame mem
release of the spring or springs which normally
bers 2 and I joined at their lower ends to the '
maintain thev rolls in close engagement and under 15 opposite ends of a bottom frame member-4 to
. relatively high pressure.
- v.
which the usual drip aprons 5 may be secured inv '
Another important object is to provide a quick
any suitable and w‘cll known manner. .Prefer
release mechanism of such character that the _
ably, the side frame members 2 and 3 are made
top frame and the pressure imposing spring will
Vof stamped or pressed sheet metal and are of4
be restrained against undesirable movements be- 2o generally U-shape in cross section. `The side
yond those necessary t0 effect the release of presframe members carry lower roll bearing blocks 6
sure upon the rolls.
which are _suitably supported by pins 1 extending
Still another important object is to provide an
arrangement whereby certain of the mechanism _
employedto eiïect the release of pressure may _be'25
used to effect the resetting ofthe top frame and
the -resecuring 0f the spring in pressure exerting
relationship With reS'DeCttOthe r0llS-
through the side frame members and which serve
rotatably to support the journals 8 of the lower
wringer rolll. 'I'he upper wringer roll Il like
wise has journals i2 bearing in bearing blocks I3
which aremounted _for vertical sliding movement','-
A further object is to provideïa simple and
yin >the side frame members.
The lower roll 9
may- be' driven fromv one end in any suitable
inexpensive trigger 0r the like device `ofsuch '30 manner well understood in the art, and drives Y
character and so arranged lin cooperative con-. ltheupper roll Il through «its f_rictional engage
junction- with a bar or the like extending trans--
ment, thergwith
verSely 0f the wringer. that the release mecha- `
nism may be operated to eiïect substantially in-
.A removable top- frame member IlA formed of '
_sheet metal andas a single stamping, or other- '
_. . .
stantaneous release 0f »Pressure either by B11111118 35 wise, carries leaf spring-,Iìthe opposite ends of
0n the bar in a direction .away from the wringer
which are arranged normally to press downward
0r. by pushing on the -bar in a directiontowalîd
upon the' bearing blocks I3 in order to press the
the wringer.
rolls into engagement with one another, the
Marly Other ObjeCtS 3S Well 8S theadvantaßes
reaction of the spring being absorbed through
and uses of the invention will be understood and 40 the top frame member and~ by the side frame
appreciated after reading‘the f01l0Wl118 descrip-
members when the top frame member is secured
tion and claims and after viewing the drawings
to the side frame members. ' The tension of the
_ _
spring I5 may be adìusted by a set screw or the
Fig. 1 is a front elevation of a wringer mecha- » , vlike (ngc Shown) by which the Spring is _secured
nism embodyinga preferred form 0I the inven- 45 to the top frame -member I4 -in an ordinary
Fig. 2 is an end elevation of the wringer Shown
in Fig. 1;
Preferably and in the interests of economy and
simplicityof manufacture the top frame member
Fig. 3 is a vertical section of a fragment taken l ' I4 is made in'one piece and substantially sym
substantially along the line III-m 0f F18» _2,1116 50 metrical -with respect to its longitudinal ` and
view showing the parts in their normal relation
Fig. 4 is a view similar to theview of Fig. 3,
but on a slightly larger scale and showing the
' transverse axes, as will be observed from Figs. 1,
2 and 8. Each end thereof is slotted to _provide a
slot I'I therein. vThe upper ends of thel side
frame members 2 and l are designed -to be re
pressure release mechanism and resetting mech 55 ce'ived within the end portions of the top _frame
I 2
2,292,933 »
member in telescoping relation therewith and
one end frame member, in this instance frame
member 3, is provided with one or more -lugs I1.
struck outwardly therefrom and arranged to pass
through slot I6 and to hook over the lower edges
of portions I8 of the slot I6. The lug or lugs I1
are designed to permit the top frame member
to hinge or pivot thereon or to be released there
from, as may be desired or as may happen in
the functioning of the release mechanism to be
Fastened to the opposite end of the top frame
member I4 on a rivet or other pin I9 is a U
for moving the pivot pin 29 to a position out
ward beyond a dead center position with respect
to a line of centers between the pivots 25 and 3|,
comprises a lever, or the like, 33, pivoted on a
pivot 34 secured between spaced lugs 35 which
4may be struck from the lower end of side frame
member 2 and which, if struck from frame mem
ber 2, leave openings through which lever 33 ex
tends. At its outer end the lever 33 is forked
to provide projections or lugs 36, normally ar
ranged when the lever is in the position shown in
Fig. .3, barely to contact with the inner face of
the reset arm 26. At its inner end the lever 33
is provided with'aI square or other shaped .aper
shaped strap or hinge member 2| which has por
ture 31 which is adapted loosely to receive the
tions 22 projecting into and through .the aper
square end 38 of a release bar 39 which extends
ture provided by the slot I6 at this end. Each of
upwardly and across the front of the- wringer.
the projecting portions 22 is recessed, as at 23,
As will be noted from Figs. 2 and 7, there are two
to provide a lip portion 24 which abuis against
levers 33 substantially identical with one another,
the outer face of the top frame member adjacent
to the edges I8 at this end, thereby the better to 20 and two release bars 39, one extending across the
front of the wringer rolls and the other across secure the hinge member 2|, which would other
the rear of the wringer rolls. _The safety release
wise be secured only by the rivet or pin I9.
bars 39, of course, project through suitable aper
Hinged on a pivot pin 25 secured in the pro
tures in the bottoms of the side frame members
jecting portion 22 of the hinged member is a re
set arm 26 which may be a sheet metal stamping 25 2 and are held in position therein at one end of
each by cotter keys, or the like, 4I, as will be
of substantially U-shape in cross section. Nor
noted in Fig. 7, and at the other end of each by
mally the reset arm 26 extends downwardly
appropriate means (not shown).
along the side frame member 2 with its lower end
In operation, should an emergency arise during
in adjacent or abutting relation with the lower
end of the side frame member, but when the 30 operation of the wringer rolls, as-when the person
or the clothing of the operator becomes caught
pressure is released the arm may swing about its
in the rolls, a blow or a push upon either safety
pivot 25 to a position such as that illustrated in
release bar 39, or a pull upon either of the safety
Figure 4. In order to prevent the top frame
release bars, will rock one of the levers 33 about
member and the spring I5 from flying oiI in case
the tcp frame member is released from the side 35 its pivot 34, which action will 4cause one of the
projections 36 to push the reset arm 26 outwardly
frame members, and in order to enable the mech
and away from the side frame member 2. The
anism to be reset after the pressure has been re
outward movement imparted to the reset arm 26
leased, the release is provided with a toggle
is suiiicient to carry the pivot 29 and the lower
mechanism which will now be described.
Spaced toggle links 21, which may be formed 40 end of the link 21 outwardly of the notch 32 and
away from theside frame member 2 to a position
as a single stamping having an integral joining
beyond a dead center position with respect to the
and spacing portion 28, are pivotally secured at
axes of pivots 25 and 3 I, whereupon the resultant
one end of each upon a pivot pin 29 suitably
of the force of the reaction of the spring I5 will
secured in the reset arm 26. The other ends of
links 21 are pìvoted upon a pivot pin 3| secured 45 carry the reset arm 26 and link 21 upwardly to
ward and perhaps beyond the position illustrated
in the side frame member 2. The side frame
in full lines in Fig. 4. The outward movement of
member has a transverse notch _ or recess 32
the resetarm 26, however, is constrained by the
adapted to receive the pivot pin 29 when the re
link 21, so that the parts may not fly away from
set arm 26 lies in adjacent or abutting relation
to the side frame member.
50 their relative association, as might otherwise be
the case. Upon release of the reset arm 26 from
As will be noted in Figs. 3 and 4, when the
its normal position, the spring I5 will urge the
parts are in normal position with the rolls under
top frame member I4 upwardly and all tension or
pressure exerted by the spring I5, and with the
pressure upon the rolls II and 9 `will be released.
reset arm adjacent to the frame 2, a line joining
the centers of the pivots 25 and 29 lies to the 55 The action, upon release, is substantially instan
right of or toward the wringer rolls from the
In resetting the pressure upon the rolls, the
axis or center of the pivot 3|. Consequently, the
edges of portions I9 are reengaged (if they have
arrangement constitutes an overthrow toggle, so
- been disengaged) beneath the lugs I1, and a
that the force of the spring I5 and itsA reaction
downward pull upon the resetting arm 26 op
tends to hold the pivot 29 Within the recess 32
and the lower portion of the reset arm 26 against 60 erates, through the toggle linkage, to recom
press the spring I5 and pull the top frame mem
the lower side of the side frame member 2. So
ber I4 downward into its proper and normal po
long as the parts remain in this position with
sition. As soon as the pivot pin 29 is reengaged
the portions I8 at the opposite end of the top
frame engaged beneath the lug or lugs I1, the 65 in the recess 32, the wringer is again in opera
rolls will remain under pressure determined by
tive condition, in which condition it will remain
until the pressure release mechanism is again
the tension on the spring I5. However, if the
pivot 29 is moved to the left or away from the
rolls to a position where its center lies beyond a
While I have illustrated and described what is
dead center position with respect to the center
at present a preferred embodiment of the inven
of the pivots 25 and 3|, the reaction of the spring
tion, it will be understood and appreciated that‘
I5 will throw the reset arm 26 outward and up»
the invention is susceptible of embodiment in
ward to or above a position such as that; illus
wringers of diiïerent construction and that the
trated in full lines in Fig. 4.
reset and release mechanism may take other
The mechanism for breaking the toggle, that is 75 forms without departing from the spirit of the
2. In a clothes wringer, a pair of cooperative
rolls, resilient means urging said rolls into co
operative engagement with one another, upper
andvlower frames, releasable latch means con
operative engagement with one another, upper 5 necting the frames on one end, toggle lever re
lease and reset means connecting the opposite
and lower ~frames, releasable latch means con
ends of the frames, inverted U-shaped safety re
necting the frames on one end, toggle lever re
lease bars pivotally mounted on each side of the
lease and reset means connecting the opposite
wringer, and dual contact bell cranks each co
ends of the frames, and means to actuate re
lease of said toggle lever including bell cranks 10 acting at plural points with the toggle lever and _
coacting with the safety release bars to actuate
attached to the lower frame and inverted U
invention and the scope of the vappended claims.
I claim:
1. In a clothes wringer, a pair of cooperative
rolls, resilient means urging said rolls into co
the release of the toggle lever to release roll
shaped bars pivotally mounted on each _side of
the wrlnger and held outwardly by the roll re
pressure, and upon reverse movement to reset
and hold the safety bars in operating position.
silient means for release movement- in either dì
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