US2572604A

US2572604A - Wringer

Info

Publication number: US2572604A
Application number: US630177A
Authority: US
Inventors: Nicholas L Etten
Original assignee: Chamberlain Corp
Current assignee: Chamberlain Corp
Priority date: 1945-11-23
Filing date: 1945-11-23
Publication date: 1951-10-23
Anticipated expiration: 1968-10-23

Description

Oct. 23, 1951 ETTEN 2,572,604

' WRINGER Filed Nov. 25, 1945 5 Sheets-Sheet l N. L. ETTEN Oct. 23, 1951 WRINGER 5 Sheets-Sheet 2 Filed Nov. 25, 1945 IUHHHI I I I I BY W N. L. ETTEN Oct. 23, 1951 WRINGER 5 Sheets-Sheet 3 Filed Nov. 23, 1945 W Em 6 M10 T #6 W N I Q l m M 5 Sheets-Sheet 4 INVENTOR. Mcoias" ZS. Fife/z N. L.. ETTEN WRINGER Oct. 23, 1951 Filed Nov. 23, 19 45 Patented Oct. 23, 1 951 (Jhanriberlain corporation, Waterloo, Iowa, a

corporation of Iowa Application November 23, 1945, Serial-No. 630,177

The present invention relates to wringers for domestic washing machines. This wringer is arranged to extremely compact all mechanisms that are adapted for efficiently carrying out the wringing operation and which are so constructed to considerably reduce the cost of the wringer structure.

One of the main objects of the present invem tion is to provide a wringer wherein the usual spring mechanisms that operate to maintain the wringer rolls in operative wringing contact have been eliminated from the ends of the wringer structure thereby reducing the overall length of the wringer. V 7

Another object of the present invention is to provide suitable spring means to urge the rolls of the wringer into operative contact and to incorporate such spring means into one of the tubular members utilized for joining the end plates of the wringer, such tubular elements comprising a portion of the wringer frame structure. In this manner the spring means is installed in a space which normally has no other use thereby confining such mechanism within a protective shielding means and entirely out of the normal positicn's heretofore selected in conventional wringer constructions of the present dayty'pe.

Another object of the present invention is to provide simple cam mechanism for introducing tension into the spring means, such cain means also being operated. for releasing instantly under the action of manually operable means connected therewith.

Still a further object of the present invention is to provide arock frame structure somewhat of the type shown and described in my copen ding application, Serial No. 610,236, filed August I1, 1945, The rock frame of the present invention has additional mechanism connected therewith to lock the spring means through actuation of the novel cocking means incorporated into the structure of the present wringer.

Another advantageous feature incorporated in the present wringer design resides in the use of torsional spring means either in the forin of a flat leaf spring or a helical torsional spring. Furthermore, such a spring of either type ma be varied in length and thickness according tothe conditions found best suited to a particular wringer structure. In the present instance, the springs disclosed extend the full. length of the wringer frame. Obviously, such spring lengths can be reduced in length by using" suitable extension means connected withthe vertically guided bearing means which moves the roll that is subjected to the spring pressure into operative con tact with the other coacting wringer roll.

All other objects and advantages of the present design of wringer shall hereinafter appear in the folowing detailed description having reference to the several views in the drawings submitted herewith and forming a part of thisspecification.

in the drawings:

Fig. 1 is a general side elevational view of the outboard end of the wringer illustrating more specifically the manner in which the reset mechanism of the present invention is disposed with I respect to the wringer shroud;

Fig. 2 is aplan view of the wringer mechanism per se eliminating entirely any housing or shroud of the wringer structure, part of such view being broken away and in section to illustrate certain details of construction;

Fig. 3 is an end elevational view of the wringer structure illustrated in Fig; 2 and substantially as seen when viewed from the left in the latter figure; V

Fig; 4 is another endelevational view fragmentarily shown to illustrate the parts of the wringer when in tripped or release position, differentiating from the normal cocked position illustrated in Fig.3

Fig.- 5 is a small detailed cross sectional view of a portion of the spring assembly as viewed substantially along the line 5-5 of Fig. 2;;

Fig. 6- is a fragmentary plan View with parts thereof broken away and insection illustrating a modified arrangement ot spring mechanism in contrast to the disclosure in Fig. 2;

Fig. 7 is a detailed cross sectional view of a portion of the spring; mechanism in the modified illustration in Fig. 6 substantially as seen along the; line l'l in such figure Fig. 8 is another detailed cross sectional view of a part of the spring assembly structure substantially as seen along the line ti -8 in 6';

Fig- Q is a fragmentary end elevational view of the outboard endof the wringer demonstrating a contemplated modified arrangement of the release and reset mechanism utilized in connection with the torsional spring means for the normal operation of" they/ringer, such structure simplifying somewhat the arrangement in the preferred construction; and

Fig. l0 is a fragmentary plan view of the modifiedwringer mechanism illustrated in Fig. 9 with parts thereof broken away and in section.

Figs. 2 and 3 best illustrate the preferred structure of wringer operating mechanism comprising the present invention. In these figures the main frame of the wringer comprises the end plates and 2 longitudinally positioned in spaced relation by means of tubing 3 and 4 which are rigidly connected to the end plates and 2 in the manner shown in Fig. 2. A bracket 5 is connected with the end plate 2 and provides a means for mounting the wringer mechanism seen in Fig. 2 upon the gear box or wringer post structure, the latter element being of any usual conventional construction. Vertically disposed channels 5 and 'l are conveniently secured to the end plates I and 2 and provide guiqeways in which the vertically

movable bearing brackets

8 and 9 are guided for carrying the bearings l0 and H supporting the ends of the shaft l2 of the upper roll I3.

The

bearing brackets

8 and 9 extend toward the bottom of the wringer mechanism as seen in Fig. 3 and are provided with longitudinally projecting studs [4 and I5 which project through suitable slots in the end plates I and 2 such as indicated at H3 in Fig. 3 for connection with the ends of the arms and I3 through which they are connected with the spring means shown generally by the reference numeral I9 in Figs. 2 and 3.

The lower roll of the present wringer is indicated at 25, and as shown in Fig. 3 is provided with a shaft 2| supported by a fixed bearing bracket 22, and the latter is secured to the channel 6 by means of a conventional pin 23 as seen in Fig. 3. Thus, the wringer mounts the usual pair of cooperating rolls, one of which is vertically movable with respect to the other with such coacting rolls functioning in the usual manner to carry out the wringer operation.

Now referring back to Figs. 2 and 3, the spring mechanism comprises, mainly, a fiat leaf spring 25 having its ends 26 and 2'! projecting outwardly with respect to the end plates and 2 with the arms I"! and I8 secured to such ends in any suitable manner. The leaf spring 25 is guided within a tube or sleeve 23 that is carried within the frame tube 4 with clearance suflicient to insure rotation of the tube 28 with respect to the tube 4.

As best seen in Figs. 2 and 5, the central portion of the tube 28 is crimped or squeezed upon the leaf spring 25, this crimped section being indicated at 29 in Figs. 2 and 5. In this manner the sleeve 28 and the leaf spring are joined at the middle as seen in Fig. 2 while the

ends

26 and 21 of the leaf spring are free of the tube and may be torsionally twisted independently with respect to such tube or sleeve 28.

Tube 28 projects beyond the end plate I and carries an arm 30 which is rigidly secured thereto. From this construction it may be seen that by actuating the free end of the arm it is possible to twist the central portion of the leaf spring 25 by reason of the connection of the tube 28 therewith, and that this in turn will transmit torsional spring pressure through the

ends

25 and 21 of the leaf spring 25 directly to the arms I! and I8 which have their free ends connected by means of the pins I l and I5 to the vertically operable roll structure thereby transmitting spring pressure to the roll I3 and urging the latter into operative contact with the roll 20. This particular action is accomplished as best seen in Fig. 3 by urging the arm 33 in a clockwise direction and that such tension is maintained in the leaf spring 25 by holding such arm 30 in a predetermined angular position with respect to the rotational or twisting axis of the spring structure.

During the operation of the wringer rolls, the pins I4 and I5 together with the bearing brackets will be actuated vertically thus moving the arms l1 and I8 synchronously in a counterclockwise direction thereby tensioning the spring to increase the wringer pressure under the action of larger masses of clothes as the latter pass between the wringer rolls. Obviously, the initial tension induced in the torsional spring 25 may be varied according to the relative angular displacement established between the arm 30 and the dual coacting arms I1 and I8.

The pre-stressed position of arm 35 is controlled by means of a cam 3| pivotally mounted at 32 upon the end plate I, such cam cooperating with a roller 33 pivotally supported upon the pin 34 carried by the free end of the lever 30. Cam

3| is provided with an involute surface substan-v tially as shown and such surface has a slight depression at 35 to receive the roller 33 when the cam 3| is in the normal operative position for fully cooking the arm 30 and the connected spring mechanism to introduce the initial tension hereinbefore described. Shaft 32 extends outwardly of the housing or shroud 36 as viewed in Fig. 1 and connects with a handle 31. Rotation of the latter will simultaneously rotate the cam 3|. Handle 31 is also provided with suitable spring detent means 38 engaging a depression 39 formed in the wringer shroud 36, thus enabling the user to better position the handle and its connected cam 3| at a time when the roller 33 lies in the depression 35 on the surface of the cam and when the wringer rolls are under tension during the normal wringing operation. The use of handle 31 is to provide a reset means-to rotate cam 3| into the position shown in Fig; 3 whenever such cam has been shifted angularly out of this position to allow the arm 30 and its connected roller 33 to quickly. move angularly due to the drop-off 3m on cam 3| and into the position indicated in Fig. 4 which illustrates the release position of the spring mechanism that permits separation of the wringer rolls as a safety feature and also to separate the rolls when such wringer is not in operation.

The release of the wringer spring mechanism may be accomplished in numerous Ways but in Fig. 3 it is seen that a ratchet mechanism has been employed for angularly shifting the cam 3|. A ratchet wheel 40 is secured to shaft 32 for rotation directly with the cam 3|, and a pair of spring pressed pawls 4| and 42 are carried by the ring 53 which is loosely carried upon the shaft 32. Ring 43 has oppositely disposed

arms

44 and 45 pivotally connected to the

links

46 and 41 and such links have pins 48 and B9 operating within slots 53 and 5| formed in the end plate I.

Pins

48 and 49 connect with the adjacent vertically disposed

legs

52 and 53 of the rock frame members having the longitudinally disposed

bars

53 and 55 which extend across the wringer and at each side of the upper roll l3.

Legs

52 and 53 of the rock frame are pivoted at 56 and 51 to the plate I while the far ends of the rock frame terminate in legs 58 and 59 pivotally carried at 60 and 5| by the end plate 2. Thus by operating the release mechanism by urging either one of the

bars

54 and 55 toward the wringer, the bar 55 being so indicated as being actuated in Fig. 4, the connected link mechanism urges the ring 43 clockwise with respect to shaft 32 carrying the ratchet 43 and cam 3| directly therewith through the instrumentality of the

pawls

41 and 42 causing the cam to release the roller 33. This permits arm 30 and roller 33. to spring counterclockwise into some such position as indicated in Fig. 4 relieving the tension. of the spring 25 by untwisting the same thus removing the spring pressure from the roll l3 since the pressure on arms IT and I8 is also thereby relieved.

After the rock frame has been manipulated as described, the two U-shaped portions thereof will again move outwardly into the positions indicated in Figs. 2 and 3 by means ofa spring 62 connected with the link 41 which again moves ring 43 and the pawls into their Fig. 3 positions as determined by the length of the slots 53 and 5| which limit the movements of the

pins

48 and 43. Thus the release mechanism is thereby again reestablished and positioned for subsequent operation to release the wringer rolls.

After the cam 3,! has been moved into the position indicated in Fig. 4. the handle shown. in Fig. l at 31 may then be moved clockwise causing the roller 33 to ride the cam surface from its extreme released position in Fig. 4 to the position indicated in Fig. 3 over the involute surface of the cam until such cam is brought to the position shown in Fig. 3 where the roller again drops into the depression 35 thereby establishing all the parts into their pressure active positions.

It should be noted that during the release action caused by a movement of the

bars

54 or 55, that shaft 32 is slightly displaced angularly from its normal position in Fig. 3. This will impart a slight angular displacement of handle 3? which is only a momentary and negligible movement on the part of the handle 37. The handle 31'! isv quickly restored to its normal vertical position by using the same in resetting the wringer mechanismv as above described through the rotation of the handle into its original and vertical position as indicated by the parts as viewed in Fig. 3'.

Fig. 6 shows a modified arrangement of spring means wherein a double coiled spring 35 is used having its

ends

66 and 8? connect with

bosses

35 and 69 suitably notched for receiving such spring ends. These bosses 38. and 69 connect with the arms and H that join with the bearing brackets of the. upper roll in the same fashion as in the. preferred construction previously described. The Fig. 6 construction provides a tube l2 ro tatably supported within the wringer frame tube 4 and the tube i2 is crimped as shown at E3 in Fig. 7 to accommodate the longitudinally extending portion '14 of the spring 65. An arm E5 equivalent to the arm 35 in the preferred construction is connected with the end of the tube '12 and is capable of inducing torsional stress in the spring 65 by rotating the tube '52 thereby" winding the central portion of the spring by means of the longitudinally extending portion 74. Obviously, spring 35 may be made of two lengths instead of one or any such similar arrangement to accomplish the same purpose.

Figs. 9 and 10 illustrate a modified arrangement of release and reset mechanisms for operating a cam 53! which in this particular construction has been constructed to omit the depression 35 from the surface thereof leaving the roller 33 free but stopped as shown in Fig. 9 through the introduction of a definite stop means now connectible and coacting with the cam I31. This stop means. is established by means of a pin 80 which is. connected to-the cam HI and engages a lug 81 carried by the link 82 pivotally connected to the

pins

48 and 49 to move directly with the

arms

54 and 55, whether the latter are actuated in one or the other direction relative to the wringer rolls. In this construction the

pins

48 and 49 operate in the

slots

83 and 84 formed on the side of end frame I and the entire link 82 and its connected parts including the rock frames are all positioned in the relationship shown in Fig. 9 by means of the link 85 pivotally carried at 86 upon the end frame I. The link 35 has a forked end 8'! engaging the pin 49, and a tension spring 83 is connected between the pin 89 on link 85 and a fixed pin 90 on the end frame I to constantly urge the link 35 into the vertically situated position in Fig. 9. mechanism is hereby always returned into the position shown in Fig.7 9 whenever the rockable frame bars 54 and 55 are actuated to displace lug 8| from the path of the pin 83 and that after such pin 83 passes the lug upon being displaced, the link 82 again returns to the position shown through spring 88 bringing the lug 8! back to the same initial position to again he engaged by the pin 89 upon completion of the revolution of tl g cam NH.

The shaft 32 carrying cam 53% extends through the shroud 3B of the wringer as indicated in Fig. 10 to receive the hub 91 of a suitable handle 92 that is adapted for resetting the cam I31. Hub 5| is cupped for housing a spring 93 having one end 94 thereof connected with the shaft 32 while the other end 95 thereof is secured to the hub 9|. With this arrangement, rotation of the handle 52 revolves shaft 32 by means of the spring 93 to rotate the cam l3! for angularly resetting the latter after the same has been released as previously described. In this construction the angular position of the pin 83 with respect to the axial center of the shaft 32 is such when considered in connection with the angular position ofv the handle 92 with respect to the same axis, that spring 93 is tensioned a definite amount and that such angular displacement between the elements described is established and maintained by means of a suitable latch mechanism 93 carried in the free end of the handle 52 for engaging behind a lug 37 formed as a part of the shroud 36 or, as a separate element connected thereto. Thus, by revolving the handle 32, cam lSi follows the same, with the handle lagging with respect to its normal position at the time when pin 83 strikes. the lug 8!.

Therefore, the cam is halted as the pin 83 strikes lug BI and handle 92 is. rotated an additional angular amount in a clockwise direction until the latch 93 drops in back the lug 3? to lock such handle in a position with the spring stressed a sufiicient amount to allow cam til to rotate to angularly release the roller whenever the lug Si is thereafter shifted laterally with respect to the path of the pin 35 on such cam whenever the roller release is manually effected as described through the instrumentality of the rock frames 54 and 55.

Spring 93, therefore, provides a lost motion means between shaft 32 and hub 9! which functions to reset the cam l3l, after release, through the rotation of handle 92; and the pin and l'ug elements coact with the handle latch means to provide a releasable mechanism pre-stressed to urge cam [3i in a clockwise manner whenever pin 80 is freed by lateral movement of lug 3i as caused by actuation of the rock frame release means.

Other changes and modifications may be made Thus the entire.

in the structures disclosed and described without departing from the general concept of the present invention. Therefore, this invention is not to be limited to the exact form, parts or combination of elements herein disclosed and described excepting insofar as the same shall be governed by the breadth and scope of the appended claims directed thereto.

What I claim is:

1. In a wringer, a frame having end plates, coacting wringer rolls mounted between said end plates, and spring means carried between said end plates and projecting therethrough, said spring means being connected With one of said rolls to urge same toward the other roll and comprising a torsional spring projecting through said end plates, roll bearing means, linkage means interconnecting the ends of said spring and said bearing means, and operable means supported outside one of said end plates and independent of said linkage means and at one end of the frame and connected with said torsional spring and adapted to twist same to induce a predetermined tension therein for transmission to said one wringer roll.

2. In a wringer, a frame having end plates, coacting wringer rolls mounted between said end plates, and spring means carried between said end plates and projecting therethrough, said spring means being connected with one of said rolls to urge same toward the other roll and comprising a torsional spring supported longitudinally with respect to the frame, means connecting the ends of said spring with said one roll, and means supported outside of one of said end plates and independent of said connecting means and at one end of the frame and connected with the central portion of said spring to twist same relative to the ends thereof transmitting spring pressure to said one roll.

3. In a wringer, a frame, wringer rolls mounted thereon, and spring means connected to urge one of said rolls toward the other of said rolls and comprising a torsional spring, a tube mounted for rotation on said wringer frame and enclosing said spring, said tube and spring being connected intermediate the ends of the latter, means connecting the ends of said spring with said one roll, and means connected with said tube and adapted to twist said spring to transmit pressure to said one roll through said connecting means.

4.. In a wringer, a frame including a longitudinally extending frame tube, wringer rolls mounted upon said frame, and spring means connected to urge one of said rolls toward the other of said rolls and comprising a torsional spring, a sleeve mounted for rotation within said frame tube and housing said spring, said sleeve being connected to said spring at a point intermediate the ends of the latter, arms connecting the ends of said spring with said one roll, and operable means connected with said sleeve to angularly displace the latter to bias the spring transmitting the force of such spring to said one roll.

5. In a wringer, a frame including a longitudinally extending frame tube, wringer rolls mounted upon said frame, and spring means connected to urge one of said rolls toward the other of said rolls and comprising a torsional spring, a sleeve mounted for rotation within said frame tube and housing said spring, said sleeve being connected to said spring at a point intermediate the ends of the latter, arms connecting the ends of said spring with said one roll, and operable means connected with said sleeve to angularly displace the latter to bias the spring transmit ting the force of such spring to said one roll, said operable means comprising an arm on said sleeve, and cam means to urge said latter arm and sleeve in a direction to stress said spring.

6. In a wringer, a'frame including a longitudinally extending frame tube, wringer rolls mounted upon said frame, and spring means connected to urge one of said rolls toward the other of said rolls and comprising a torsional spring, a

sleeve mounted for rotation within said frametube and housing said spring, said sleeve being connected to said spring at a point intermediate the ends of the latter, arms connecting the ends of said spring with said one roll, and operable means connected with said sleeve to angularly displace the latter to bias the spring transmitting the force of such spring to said one roll, said operable means comprising an arm on said sleeve, cam means to urge said sleeve arm and sleeve in a direction to stress said spring, and

manually operable means to actuate said cam means into a position to release said sleeve arm and sleeve thereby allowing said spring to assume its normal unstressed position.

7. In a wringer, a frame including a longitudinally extending frame tube, wringer rolls mounted upon said frame, and spring means connected to urge one of said rolls toward the other of said rolls and comprising a torsional spring, a sleeve mounted for rotation within said frame tube and housing said spring, said sleeve being connected to said spring at a point intermediate the ends of the latter, arms connecting the ends of said spring with said one roll, and operable means connected with said sleeve to angularly displace the latter to bias the spring transmitting the force of such spring to said one roll, said operable means comprising an arm on said sleeve, cam means to urge said sleeve arm and sleeve in a direction to stress said spring, and manually operable means to actuate said cam means into a position to release said sleeve arm and sleeve thereby allowing said spring to assume its normal unstressed position, and reset mechanism connected with said cam means to return the latter to arm engaging position to again stress said spring through said sleeve.

8. In a wringer, a frame having end plates with connecting tubes therefor, coacting rolls carried by said frame, and spring mechanism for urging one of said rolls into operative contact with the other of said rolls and comprising a sleeve rotatably supported in one of said frame tubes, a flat leaf spring within said sleeve, said sleeve having a flattened section abutting a portion of said spring intermediate the ends thereof, arms connected between the ends of said spring and the ends of said one roll, and biasing means connected with said sleeve to twist the intermediate portion of said spring in a direction to stress said one roll through said arms.

9. In a wringer, a frame having end plates with connecting tubes therefor, coacting rolls carried by said frame, and spring mechanism for urging one of said rolls into operative contact with the other of said rolls and comprising a sleeve rotatably supported in one of said frame tubes, an oppositely coiled torsional spring disposed with said sleeve, said sleeve having a portion thereof crimped to engage the central portion of said spring between said coils, arms connected between the ends of said spring and the ends of said one roll, and biasing means connected with said sleeve to twist the. central portion of said spring in a direction to stress said one roll through said arms.

10. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and cooperative rotational mechanism connected with said spring to twist same to transmit pressure to said rolls through said connecting means, said cooperative rotational mechanisms comprising a swingable arm comiected with said spring, and a rotatable cam directly 'engageable with the end of said arm, said cam having a quick dropoff whereby said arm may instantly swing freely into a position to allow unwinding of said spring to relieve roll pressure upon slight angular displacement of said cam.

11. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and cooperative rotational mechanisms connected with said spring to twist same to transmit pressure to said rolls through said connecting means, said cooperative rotational mechanisms comprising a swingable arm connected with said spring, a rotatable cam directly engageable with the end of said arm, said cam having a quick drop-off whereby said arm'may instantly swing freely into a position to allow unwinding of said spring to relieve roll pressure upon slight angular displacement of said cam, and actuating means connected with said cam and extending along the wringer rolls in position for manual contact whereby said cam is angularly displaced.

12. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and cooperative rotational mechanisms connected with said spring to twist same to transmit pressure to said rolls through said connecting means, said cooperative rotational mechanisms comprising a swingable arm connected with said spring, a rotatable cam engageable with the end of said arm, said cam having a quick dropoff whereby said arm may instantly swing freely into a position to allow unwinding of said spring to relieve roll pressure upon slight angular displacement of said cam, and actuating means connected with said cam and extending along the wringer rolls in position for manual contact whereby said cam is angularly displaced, comprising a rockable framework, ratchet mechanism including pawls interposed between said cam and said framework to rotate said cam in one direction, and resilient means to return said rockable frame and said pawls to initial position for the next succeeding release operation.

13. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and mechanism connected with said spring to twist the same to transmit pressure to said rolls through said connecting means comprising an arm connected with said spring, a cam to urge said arm in a direction to twist said spring, resilient means to normally urge said cam out of the path of said arm, and releasable stop means connected with said cam to normally hold same in operative relation with respect to said arm,

14. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated a with said rolls to urge same into operative contact, and mechanism connected with said spring to twist the same to transmit pressure to said rolls through said connecting means comprising an arm connected with said spring, a cam to urge said arm in a direction to twist said spring,

, resilient means to normally urge said cam out of the path of said arm, stop means connected with said cam to normally hold same in operative relation with respect to said arm, said stop means comprising a movable bar, cooperative abutment members on said bar and cam respectively, and a manually rockable frame connected with said bar to actuate the latter.

15. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and mechanism connected with said spring to twist the same to transmit pressure to said rolls through said connecting means comprising an arm connected with said spring, a cam to urge said arm in a direction to twist said spring, resilient means to normally urge said cam out of the path of said arm, stop means connected with said cam to normally hold same in operative relation with respect to said arm, said stop means comprising a movable bar, cooperative abutment members on said bar and cam respectively, a manually rockable frame connected with said bar to actuate the latter, and positioning means connected with said rockable frame to restore same and its connected bar to cam stopping position.

16. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and mechanism connected with said spring to twist the same to transmit pressure to said rolls through said connecting means comprising an arm connected with said spring, a cam to urge said arm in a direction to twist said spring, resilient means to normally urge said cam out of the path of said arm, and releasable stop means connected with said arm to normally hold same in operative relation with respect to said arm, and a reset lever connected with said cam through said resilient means to return said cam to operative stopped position to again stress said spring.

1'7. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and mechanism connected with said spring to twist the same to transmit pressure to said rolls through said connecting means comprising an arm connected with said spring, a cam to urge said arm in a direction to twist said spring, resilient means to normally urge said cam out of the path of said arm, and releasable stop means connected with said cam to normally hold same in operative relation with respect to said arm, and a reset lever connected with said cam through said resilient means to return said cam to operative stopped position to again stress said spring, and latch mechanism for said reset lever to lock same in a predetermined angular position to tension said resilient means coacting with said cam.

18. In a wringer, in combination, a longitudinally disposed torsional spring, wringer rolls, said spring having connecting means associated with said rolls to urge same into operative contact, and mechanism connected with said spring to twist the same to transmit pressure to said rolls through said connecting means comprising an arm connected with said spring, a cam to urge said arm in a direction to twist said spring, resilient means to normally urge said cam out of the path of said arm, and releasable stop means connected with said cam to normally hold same in operative relation with respect to said arm, and a reset lever connected with said cam through said resilient means to return said cam to operative stopped position to again stress said spring, and latch mechanism for said reset lever to lock same in a predetermined angular position h to tension said resilient means coacting with said cam, said releasable stop means including a rockable frame having parts thereof flanking the wringer rolls, and means to normally return such rockable frame to operative position after actuation of the same.

NICHOLAS L. ETTEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS