US2202775A - Release device for wringers - Google Patents

Description

v May 28, 1940. w. L. KAUFFMAN, I2D

RELEASE DEVICE FOR WRINGBRS 1937 2 Sheets-Sheet l Filed March 1'7.

A TTORNEYS.

May 28, i940. w. 1 KAUFFMAN. 2D 2,202775 RELEASE DEVICE FOR WRINGERS Filed March 17, 1937 2 Sheets-Sheet 2 nm l? www E IN V EN TOR.

A TTORNE YS.

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iinveil Manufacturing (Company, Erie, We., a corporation el? Pennsylvania Application iii/arch il,

ifi Claims.

Power wringers are commonly provided with saiety release mechanisms by which the pressure on the rolls may be instantly released. Many of these devices eiect a release by releasing the top bar from the frame, and the release mechanisms in such structures ordinarily involve latching devices which may be released to permit the separation oi the top bar and with vsuch a separation a release of pressure on the rolls. Such a device is shown in my former application No. 670,461 dated May 1l, 1933, on which patent issued July 27, 1937, No. 2,087,977, and in some respects the present invention is an improvement over the structure of that application. In that application the release latching mechanism would not automatically permit the escapement of the engagement parts so that the resetting could automatically be accomplished without manipulation of the engaging portions of the latching structure. With the present invention, while the release may be perfectly eiected, the resetting of the parts after release is accomplished without any manipulation of the latches through an escapement relation of these parts. Features and detalls of the invention will appear from the specification and claims.

A preferred embodiment of the invention is illustrated in the accompanying drawings as follows:

Fig. 1 shows a front elevation, part being broken away to better show construction.

Fig. 2 an enlarged section on the line 2-2 in Fig. 1.

Fig. 3 an enlarged view of the latching end of the top showing the latching mechanism in set position.

Fig. 4 an enlarged view of the end of the top showing the latch mechanism released, and the parts being in the position formed prior to resetting.

Fig. 5 shows a similar view with the parts in an intermediate position during the resetting operation.

The wringer has a frame consisting of a base I, and side stiles 2 and 3. A lower roll 4 and an upper roll 5 are provided, the lower roll having a shaft E journaled in bearings 1, the bearings 1 being arranged in the side stiles. The upper roll 5 has a shaft 8 which operates in bearings 9 slidingly mounted in the side stiles. A spring II) rests on the upper bearings and exerts pressure from the top bar II through an adjusting screw I2, the screw operating through a. nut I3 in the top bar.

A resetting device is arranged for resetting the lliii Serial No. 113114333? (fifi. iig-263) pressure on the top bar. This comprises a toggle lever, the actuating lever ifi of which is provided at i5 on the top bar. A link i@ is pivotally con nected by screw iii with the side stile il and with the lever i5 by screw il. The lever i5 is channel form and closes over the side stile, and the link i@ is also of channel form, the sides being con nected by plate it. it can be readily seen that as the lever mechanism is open the end oi the top bar is free to rise from the stile, but as the levers are swung to their set position as shown in Fig. 1, the top bar is drawn into pressure posiS tion, the leverage increasing as the pressure on the spring increases.

A release mechanism is provided for the opposite end of the top bar. A latch member 2@ is provided with a slot 2i which has portions 22 and 23 extending each side of a pivot pin 2% when the latch member is in set position as shown in Figs. 1 and 3. These portions 22 and 23 are prei"- erably inclined with the apex at the set position. The latch member is of channel form hav ing the sides 2M and connecting plate 2Gb. Hooks 25 are formed on the sides 20a and are adapted to enter notches 2t in the upper inner corners of the stile 2, the hooks engaging the shoulders formed by the upper end of the notch, the plates having cut-away portions ,30 to clear the portion of the side stile above the notch.

The latch has a trip finger 2 which is adapted to engage the under-side of a cross member 28 forming a portion of the trip member. The trip member retains the latch in set position holding it against the urge for releasing through the pressure of the main spring I0 and the relation of the surfaces of the hooks 25 oi the latch with the upper wall of the notch 26. The cross member extends through slots 29 in the top and extends into an operating bar 3i at the front and rear of the wringer and forming the operating bars. A companion cross member 28a extends through slots 29a, and the cross member 28 is secured in the operating member 3|. The cross members 28 and 28a have cam surfaces 32 which are adapted to engage the ends of the slots 29 and 29a respectively when either cross member is moved inwardly, and through this engagement to move the trip cross plate 28 endwise sumciently to release the finger 21 and permit the inner end of the latch to swing upwardly sc as torelease the hook 25 and consequently the top bar from the side stile. yThis release of the release end of the top bar as it swings up moves the pivot I5 outwardly endwise so as to bring this pivot beyond the alignmentbetween pivots I1 and I0 and thus effects the release of the resetting mechanism and this permits the further opening of the top bar to free the wringer rolls from pressure. A spring 33 is secured to the cross plate 28a and yieldingly draws the top member comprising the cross plates 28, 28a and the connecting operating members 3l toward the right or set position. The cross plate 28 has a lip 34 which forms an inclined surface on the upper part of the cross plate 28. A pin 35 extends through an opening 36 in the connecting plate 20D. This pin is provided with a head 3l, and a spring 38 is tensioned between the head 31 and the connection plate 20h, thus yieldingly pressing the inner end of the latch downwardly. As soon as the top moves upwardly and the hook has cleared the upper end of the stile the spring 38 presses down the inner end of the latch, and the iinger 2l operating on the incline 34 crowds the latch toward the right suiiiciently to permit the finger to clear the cross plate 28. The portion of the slot 23 permits the end movement for this clearance. The downward movement of the inner end of the latch is obstructed by stop 38 riveted on the under-side of the cross plate 28. As soon as the inner end of the latch reaches this stop the further pressure of the spring 38 pressing downwardly on the latch eiects a movement of the latch toward the left by reason of the inclined or camming surfaces in the portion 22 of the pivot slot'.

As the top is reset the. bottom of the hook 25 engages the top of the stile. This under-side of the hook has a cam surface 23a which forces the Vlatch toward the left so that the hook may clear the inner face of the stile. The portion 23 of the pivot slot permits this endwise movement. 'I'he hook is yieldingly carried into the notch 26 by the pressure of the spring 38 and the camming action of the portion of the slot 23 on the pin 24 thus bringing the parts to the position of engagement shown in Figs. 1 and- 3, and as the pressure of the main spring is exerted on the top the pin 24 seeks the upper or apex of the slot retaining the engagement of the hook in the notch and also the position of the finger 21 under the trip plate 28. It will be noted that an inward movement of either operating member 3| forces the endwise release movement of the trip plate 28. If the operating members 3| are hit toward the ends only one of the cammed surfaces 32 may be brought into active operation so as to effect this endwise movement. In any event, the operation of operating bar 3| eiects this endwise movement either through an inner movement of oneof the other cross plates or by both of them. The endwise yielding of the trip members on trip plate 28 through the incline 34 may permit of the resetting of the nger relatively to the trip plate but in this case the spring 38 would have to be of Such stiffness as to overcome the force of the spring 33 resisting the endwise movement of the trip plate 28.

-pressure from the top bar; means securing the top bar to and releasing it from the frame at an end of the top bar comprising an unstable latch member latching the end of the top bar to the frame; a mounting connecting the latch to the top bar; a trip member retaining the latch member in set position; a mounting on the top bar for the trip member; and an operating member actuating the trip member, the mountings, latch, and trip members being related to automatically provide for the resetting of the latchV member as the top bar is moved to set position.

2. In a wringer, the combination of a frame comprising a rigid top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the top bar; means securing the top bar to and releasing it from the frame at an end of the top bar comprising an unstable latch member latching the end of the top bar to the frame;

a mounting connecting the latch to the top bar;

a trip member retaining the latch member in set position; a mounting on the top bar for the trip member; and an operating member actuating the trip member, the mountings automatically providing for relative movements of the members for clearing the engaging portions of the latch and trip member with a resetting movement oi.' the top bar.

3. In a wringer, the combination of a frame comprising a rigid top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the top bar; means securing the top bar to and releasing it from the frame at an end of the top bar comprising an unstable latch member latching the end of the top bar to the frame; a mounting connecting the latch to the top bar; a trip member retaining the latch member in set position; a mounting on the top bar for the trip member; and an operating member actuating the trip member, the mountings automatically providing relative endwise movements of the members for clearing the engaging portions of the latch and trip member with a resetting movement of the top bar.

4. In a wringer, the combination of a frame comprising a rigid top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the top bar; means securing the top bar to and releasing it from the frame at an end of the top bar comprising an unstable latch member pivoted between its ends to the top bar, having a short arm sustaining from the pivot the major portion of the pressure at its end of the top bar, and a long arm to which the pressure is communicated; a trip device on the top bar operating on the long arm; and an operating member actuating the trip device, the latch and trip member being related to automatically permit the resetting of the top bar and latch member.

5. In a wringer, the combination of a frame comprising a top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the top bar; means securing the top bar to and releasing it from the frame at an end of the top bar comprising a latch member pivoted through a slot and pin connection intermediate its ends to the top bar and engaging the stile, said latch having a short arm sustaining from the pivot the major portion of the pressure at its end of the top bar, and a long arm to which pressure is communicated; a trip device operating on the long arm; and an operating bar actuating the trip device, said slot and pin connection permitting endwise movement of the latch for automatically clearing the latch relaliti tively to the stile and the trip device in, resetting the latches the top bar is moved to position.

6. in a wringer, the combination oi a frame comprising a top bar;' rolls mounted in the trarne; pressure means for the rolls exerting pressure from the tcp bar; means securing the top to and releasing it from the frame at an end oi the top bar comprising a latch member pivoted through a slot and pin connection intermediate its ends to the top bar and engaging stile, said latch having a short arm sustaining *from the pivot the maior portion of the pressure at its end of the top bar, and a long arm to which pressure is communicated; a trip device operating on the long arm; and an operating bar actuating the trip device, said slot and pin connection providing endwise movement ci the latch for automatic clearing oi the latch with relation to the stile and the trip device for resetting oi the latch as the top bar is moved to position, the slot extending each side oi the position oi the pin with the latch in set position and permitting endwise movement oi' the latch in one direction to clear the trip device, and endwise movement in the opposite direction to clear the frame as the top is moved to position.

7. In a wringer, the combination of a frame comprising a top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the top bar; means securing the top bar to and releasing it from the frame at an end of the top bar, comprising a latch member pivoted through a slot and pin connection intermediate its ends to the top bar and engaging the stile, said latch having a short arm sustaining from the pivot the major portion of the pressure at its end of the top bar, and a long arm to which pressure is communicated; a trip device operating on the long arm; and an operating bar actuating the trip device, said slot and pin connection permitting endwise movement of the latch for automatic resetting of the latch as the top bar is moved to position, the slot extending each side of the position of the pin with the latch in set position and permitting endwise movement of the latch in one direction to clear the trip device, and endwise movement in the opposite direction to clear the frame as the'top is moved to position, the sides of the slot being inclined from each other, the force of the pressure means urging the pin to set position at the apex.

8. In a wringer, the combination of a frame comprising a top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the topbar; means securing the top bar to and releasing it from the frame at an end of the top bar comprising a latch member latching the end of the top bar to the frame; a mounting connecting the latch to the top bar; a trip member retaining the latch member in set position; a mounting for the trip member on the top bar; and an operating member providing clearance for the latch in relation to its engagement with the stile and trip device in an engaging movement of said latch endwise of the Wringer, the mountings, latch and trip members being related to automatically permit the resetting of the top bar and the latch member.

9. In a Wringer, the combination of a. frame comprising a top bar; rolls mounted in the frame; pressure means for the rolls exerting pressure from the top bar; means securing the top bar to and releasing it from the frame at an end u. of the top bar comprising a latch member latching the end of the top bar to the frame; a mounting connecting the latch to the top bar; a trip member retaining the latch member in set position; a mounting ior the trip member; an oper ating member actuating the trip member, the mountings, latch and trip members being related to automatically provide for the resetting oi the top bar and the iatch member; and a pressure setting device acting on the top bar at the opposite end oi the wringer from the latch with the latch engaged.

lil. In a wringer, the combination oi a frame, the top bar detachably mounted on the frame; wringer rolls in the frame; mechanism exerting pressure on the rolls from the top bar; means securing the top bar to the frame comprising a pivoted latch in the form of a lever iulcrumed at the pivot, said latch forming the latch connection between the top bar and the frame and imparting top bar pressure to the pivot of the latch and a trip device securing the latched lever in set position and subjected to top bar pressure through leverage of the latch, said securing means having its parts related to automatically assume a locking position as the top bar is placed on the frame.

ll. In a Wringer, the combination of a frame, the top bar detachably mounted on the frame; wringer rolls in the frame; mechanism exerting pressure on the rolls from the top bar; means securing the top bar to the frame comprising a pivoted latch in the form of a lever fulcrumed at the pivot to said top bar, said latch forming the latch connection between the top bar and the frame and imparting top bar pressure to the pivot of the latch; and a trip device on said top bar securing the latched lever in set position and subjected to top bar pressure on the latch, said latch being movable crosswise of the pivotal axis of said latch to clear the trip device for resetting- Sii) 12. In a wringer, the combination of a frame,

the top bar detachably mounted on the frame; Wringer rolls in the frame; mechanism exerting pressure on the rolls from the top bar; means securing the top bar to the frame comprising a pivoted latch `in the form of a lever fulcrumed at the pivot to said top bar, said latch forming the latch connection between the top bar and the frame and imparting top bar pressure to the pivot of the latch; and a trip device on sai-d top bar securing the latched lever in set position and subjected to top bar pressure on the latch, said latch being movable crosswise of the pivotal axis of said latch to clear the trip device for resetting and automatically returning to normal position relatively to the axis for setting the latch.

13. In a Wringer, the combination of a frame, the top bar detachably mounted on the frame; wringer rolls in the frame; mechanism exerting pressure on the rolls from the top bar; means securing the top bar to the frame comprising a. pivoted latch in the form of a lever fulcrumed at the pivot to said top bar, said latch forming the latch connection between the top bar and the frame and imparting top bar pressure to the pivot ofthe latch; and a trip device on said top -bar securing the latched lever in set position and subjected to top bar pressure on the latch, said latch being movable crosswise of the pivotal axis of said latch to clear the trip device for resetting and automatically returning to normal position relatively to the axis for setting the latch, and automatically returning the latch to set position under pressure.

14. In a. wringer, the combination of s. frame comprising side Stiles; s. top bei' detechcbly mounted on the frame; wringer rolls in the frame; mechanism exerting pressure on the rolls from the top bar; a trip device; means securing the top bar to the frame comprising s. latch pin secured to the top bar and offset from the inner face of the stile with the top in position on the stile; and a, latch having a free end engaged by l0 the trip device, seid latch being pivoted on the pin with an elongated inclined slot permitting endwise movement of the latch, said latch having u catch shoulder having an inclined surface adapted to engage c. shoulder on the stile, said latch through the location of the pin, the inclination of the slot and the catch shoulder moving the latch endwise to clear the trip device automatically for rea-setting.

Witwen L. mmm. n.

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