Патент USA US2292933код для вставки
Patented Aug'. 11, 1942 2,292,933 v_ A ’ UNITED [STATE 2,292,933). ' _ WalNGEa RELEASE MECnAiNr-SM _ 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; _ . l 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- ' l ‘ _. . . ’ 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 - f _ 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 inwhich: ^ _ _ --f 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 tion; ’ . , ` ` - Fig. 2 is an end elevation of the wringer Shown in Fig. 1; - . ' - . manner.- „ - ' " l ’ 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 ship: 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 described. 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 taneous. 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 operated. 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 3 2,292,933 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 rection. ` 16 l NICHOLAS L. ETTEN.