US1993091A - Wringer mechanism - Google Patents

Description

March 5, 1935. N. I.. ETTEN 1,993

WRINGER MECHANISM Filed Ma`y 25, 1935 2 sheets-sheet 1 I@ III y INYEICC'IDE.. E'f ZW 171* AIIY'E March 5, 1935o N. L. ETTEN 1,993,091

WRINGER MECHANISM Filed May 25, 1935 2 Sheets-Sheet 2 LEVEN-rma- Patented Mar. 5, 1935 UNITED STATES PATENT GFFICE Claims.

This invention relates -to switching devices for power driven roll wringers and has for one of its objects the provision of switching means so connected with the releasing mechanism of the 5 wringer that operation of the releasing mechanism will result in breaking of the driving motor circuit.

Another object lies in the provision of switching means for controlling the operation of the driving motor either by means of operation of the releasing mechanism or by manual operation of the switch.

A further object is to provide a switch by means of which the driving motor is controlled to bring about or discontinue operation of the wringer, operation of the wringer being thereby controlled through automatic means when the wringer rolls are released or manually at the will of an operator.

Other objects will appear in the following de-` scription and accompanying drawings, in which- Fig. 1 is a side elevational view of a wringer mechanism with certain portions broken away to permit clearer View, also dotted outline of certain parts in operated position, all to be described;

Fig. 2 is an enlarged fragmentary sectional View of'an end portion of the wringer frame showing retaining means to be described;

Fig. 3 is a fragmentary end elevational view showing parts of the switch and associated mechanism to be described;

Fig. 4 is a fragmentary side elevational view of the end portion of the wringer frame, together with the switching mechanism, with certain parts removed to permit clearer view of underlying parts;

Fig. 5 is a fragmentary sectional view of the switching mechanism similar to the view of the same shown in Fig. 4, but with parts in operate position; Y

Fig. 6 is an enlarged sectionalview taken on lines 6-6 of Fig. 5; and

Fig. '1 is an enlarged perspective view of a portion of the switch mechanism to be described.

Referring to the drawings, Fig. 1 discloses a wringer mechanism comprising a frame composed of a lower transverse member 10 to either end of which are secured upright members 11 and l2 upon the upper ends of which is mounteda removable upper transverse member 13.

Transverse member 13 is of hollow shell-like construction, the lower side being open, the ends of the open side being so dimensioned as to slip over the upper ends of upright members 11 and 12 as shown, and is removably retained thereon at the left hand end (Fig. 1) by means of a lip 14 formed in member 11 in such a manner as to engage the lower edge 15 of an opening formed in the end wall of member 13, as best 5 shown in Fig. 2.

The opposite, or right hand, end of member 13 is normally retained upon member 12 by means of a hook member 16, pivoted at 17 upon switch supporting brackets 28, to be described later.

Hook 16 is adapted to extend over about the 'upper corner of member 13 and to be retained in locking position by means of a manually operable hook member 18, the latter being pivotally supported upon member 13 at 19 and terminating in a handle portion 20. This mechanism will be referred to again shortly.

Wringer rolls 20 and 21 are rotatably supported in the frame just described, by the following means: Lower roll 20 is supported by means of a suitable shaft 22 journaled in bearing blocks 23 which are rockably supported within the hollow upright members 11 and 12 upon transverse pins or screws 24.

The upper roll 21 is supported by means of a shaft 21' journaled in bearing blocks 25, which are slidably supported withinv` hollow uprights 11 and 12.

Bearing blocks 25, being vertically movable in upright members 11 and 12 are capable of supporting the upper roll 21 in adjustable relation to roll 20.

A flat spring member 26, adjustably supported Within member 13 by means of a manual adjust- 35 ment screw 27, has either of its ends resting upon blocks 25, whereby resilient pressure is brought to bear upon the blocks to urge roll 21 into pressure contact with roll 20.

Obviously pressure by spring 26 is available only when transverse member 13 is properly retained upon uprights 11 and 12, by means of the lip and edges 14 and 15 at one end and hook 16, retained by hook 18, at the opposite end.

It is thought clear that, with the parts assembled as described, rolls 20 and 21 are maintained in constant resilient, pressure contact by means of spring 26. It will also be apparent that manipulation of handle 20 downwardly will result in release of retaining hook 16 whereby hook 16 can no longer act as a retaining means for member 13.

With the parts so released, upward movement of member 13, induced by spring 26 abutting bearing blocks 25, will take place. The disturbance of parts caused by the release of hook 16 and con- 55l to unhook the edge 15 from engagement with lip 14. Thus, the overall effect of manual downward movement of handle 20 is to release both ends of member 13 from its normal working position to relax spring 26 to remove the contact pressure between rolls 20 and 21. The described action and mechanism will be referred to later.

Referring to Figs. 3 to 6, it will be noted that an electric switch mechanism is supported upon upright member 12 by means of bracket members 28 secured to the side thereof.

'Ihe switching mechanism generally comprises a handle lever member 29 pivoted upon the supporting frame by means of a pin 30. A downwardly extending portion 31 of this lever carries a pin 32 which is loosely engaged in a slot 33 (see Fig. 7) formed in the body of a iioating contact member 34.

As best shown in Fig. 7, member 34 has, in addition to slot 33 just mentioned, a slot 35 disposed at right angles with slot 33, downwardly extending, half circular bearing portion 36, and a shoulder portion 37.

Member 34 carries mechanism which includes a roller member 38 having a groove 39 about its center, the groove adapted to rotatably receive the bearing portion 36 of member 34, a coil spring 40 and washer 41, the spring and washer being So formed as to loosely surround the upstanding portion of member 34, as clearly shown in Figs. 4 and 5.

Pin 32,- secured in lever 29, is adapted to slide in slot 33 as already noted, and is so dimensioned as to extend beyond the slot to abut the washer 41,

the washer being urged thereagainst by spring 40, abutted by shoulder 37.

Member 34 is supported in oating toggle relation to lever 29 by means of its disposition within a recessed portion of a block of insulating material 42 which block is suitably supported between bracket members 28 by shouldered rivets 43, as best shown in Fig. 3.

The bottom portion of the recess of block 42 is of arcuate form and has a central upstanding rib portion 44 disposed longitudinally thereof, which rib is adapted tobe received in the groove 39 of roller 38.

As clearly shown in Figs. 4, 5 and 6, the floating member 34 is assembled within the recess of block 42 in operative relation with lever 29 with pin 32 slidably engaged in slot 33, the lever portion 31 disposed in slot 35, spring 40 urging washer 41 against pin 32 and roller 38 straddling the rib 44.

Considering the view shown in Fig. 4, it will be apparent that movement of lever 29 toward the right will result in movement of pin 32 in slot 33 to compress spring 40. Continued movement of lever 29 will eventually place pin 32 in a position upon or beyond a dead center line as between roller 38 and pivotA 30, with corresponding change of the angle of slot 33 relative to the associated parts in such a manner that when the dead center line is passed, the pressure of spring 40 tends to urge further movement of lever 29 and also to react upon roller 38 to causeit to roll toward the opposite side of the recess as indicated in Fig. 5.. 'Ihus alternate movement of lever 29 results in corresponding movement of roller 38.

Upon oppositesides of block 42, in insulated re'- lation, are secured contact members 45, the same being so disposed and formed as to be contacted by roller 38, which is by the way, so dimensioned as to extend beyond either side of insulating block 1,993,091 sequent-sudden movement of member 13 will act 42 so as to contact with blocks 45, as indicated in Fig. A6.

Contact members 45 are separately connected with conductors 46 leading to a driving motor to be later referred to.

The foregoing description will indicate that when handle 29 is disposed toward the left, as shown in Fig. 4, roller 38 is disposed against blocks 45 whereby electrical connection is established between conductors 46 to complete the circuit thereof, while with handle 29 disposed toward the right, as shown in Fig. 5, roller 38 is disposed out of contact with conducting members. Thus alternate manual movement of handle' 29 toward the left or right results in corresponding movement of the switch mechanism to close or open the circuit of conductors 46.

It is assumed that the wringer mechanism herein described is operaed by means of an -electric motor, which being not a part of the present invention, will not be referred to further than to Say that the driving motor is included in the circuit represented by the conductors 46 and that operation of the switch as described controls operation of the motor.

The foregoing has described manual operation of the switch. However, the switch is adapted to be automatically operated, independently of direct manipulation, by the following means:

Figs. 1, 4 and 5 will disclose dual link members 46 loosely supported within transverse member 13 by means of a bolt 47 passing through slots 46 in members 46 and depending therefrom within and adjacent either side of upright member 12, as best shown in Fig. 3.

As indicated in Fig. 1, the lower ends of members 46 are provided with-slots 49 through which the bearing block supporting pin 24 passes. The function of slots 49 as engaged by pin 24, is to linut the vertical movement of members 46 and thereby upward movement of member 13.

A dual armed lever 50, having an offset connecting portion 51 is pivotally supported upon the pin 30, which pin, as already noted, also supports the switch hand lever 29. Ihe arms of lever 50 extend within the enclosure of upright member 12 and are provided at their extremities with shouldered rivets 52 which rivets are loosely engaged in slots 53 formed in link members 46.

With this assembly automatic operation of the switch is accomplished as follows:

Mention has already been made of the upward movement of member 13, due to release v51 to engage the shank of lever 29, as clearly indicated in dotted outline in Fig. 1, to operate the switch from closed to -open position. The relative position of the parts are clearly shown in Figs. 4 and 5, as well as Fig. 1.

It is thought clear that, by the means described, release of the wringer mechanism by manipulation of lever. 20 will result in substantially immediate opening of the motor switch to arrest operation of the wringer mechanism, and that the switch cannot be manually operated to ite-establish operation of the wringer until member 13 has been properly replaced in locked position. Obviously, with member 13 properly placed, lever 50 is so disposed that connecting portion 51 is suitably withdrawn from a supporting frame therefor, releasable removable spring and frame means for maintaining contact pressure between the rolls comprising a portion of said frame, means for releasing the pressure means whereby a portion of said frame is removed from the main portion thereof, means for limiting the movement of said removable portion, means connecting with said limiting means and switch whereby movement of the limiting means imparts switching. move'- ment to the switch.

2. In a wringer mechanism, the combination of wringer rolls, a supporting frame therefor,

spring means for tensioning the rolls supported' in operable relation thereto by a movable portion of said frame, the movable portion adapted to be held in position upon the frame to maintain the tensioning means in tensioning rela.- tion or to be removed therefrom by means of the tensioning means, means for limiting the movement of the movable frame portion, an electric switch, means connecting said limiting means and switch to operate the switch when the movable portion is moved out of tension sustaining position. Y

3. A wringer mechanism tion wringer rolls, a supporting frame therefor and an electric switch for controlling driving means for the rolls, the said frame having a removable portion carrying roll tensioning means adapted to be positioned upon the frame in such having in combinava manner as to support the tensioning means in operable relation to the rolls or to be removed therefrom, means for limiting said movement, means associated with the limiting means and switch to operate the switch into open position when they movable frame portionv is removed from tension sustaining position, and to maintain the switch against manual operation while the movable portion remains so removed, the switch being manually operable into either closed or open position when the movable frame portion is placed in tension sustaining position.

4. In a wringer mechanism, the combination of wringer rolls, a supporting frame therefor, an electric switch for controlling the driving means thereof, and means for operating the switch including a movable portion of said frame, spring means for moving the movable portion, mechanism for limiting said movement and mechanism co-operative between said limiting mechanism and switch to operate the switch when the limiting mechanism is moved.

5. In a wringer mechanism the combination of wringer rolls, supporting frame therefor, an electric switch for controlling the driving means of the rolls, and means for operating the switch to stop said driving means including an upwardly movable portion of said frame, spring means for moving the same in an upward direction. mechanism for limiting said upward movement and mechanism co-operative between the limiting mechanism and switch for operating the switch to oil position upon upward movement of the limiting mechanism and for retaining the switch in such position during elevated situation of the limiting mechanism.

NIcHoLAs L. ETTEN.

Images