US1138770A - Quick release for wringer-rolls. - Google Patents

Description

S. M. MARSHALL.

QUICK RELEASE FOR WRINGER ROLLS. APPLICATION mm mam. m4.

1,138,770. I Patented May 11,1915.

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STEPHEN M. MARSHALL, OF CLINTON, MASSACHUSETTS.

QUICK RELEASE FOR WRINGEB-ROLLS.

Specification of Letters Patent.

Patented May 1 1, 1915.

Application filed August 14, 1914. Serial No. 856,781.

T all who-m itmay concern:

Be it known that I, STERHEN M. MAR- SHALL, a citizen of the United States, residing at Clinton, in the county of Worcester and State of Ma$achusetts, have invented a new and useful Quick Release for Wringer- Rolls, of which the following is a specification.

This invention relates to a wr' particularly to a device for quickly releasing the spring tension from the wringer rolls. The tension upon the rolls is usually regulated by means of a screw mounted in the upper part of the frame and adapted to press downwardly upon the yielding means which holds the upper roll down. It is often desirable, particularly in power-operated machines, to be able to release the spring pressure upon the rolls with the least possible delay. v

It is the object of my invention to provide an improved device for thus releasing the spring pressure upon the rolls, so constructed that the release of thepressure may be practically instantaneous lVith this object in.view, my invention contemplates the provision in a wringer of a locking lever normally resisting the upward thrust of the regulating screw but movable out of normal position to permit the screw and nut to move freely upwardly.

My invention also contemplates an .arrangement in which the locking lever will resist the upward pressure upon the regulating screw when the lever is in mid-position only but will release the premure when moved in either direction therefrom.

Another advantage of my construction resides in the provision of means for manually adjusting the spring pressure as desired without interference with the releasing device.

My invention further consists in certain devices, arrangements and combinations of parts, which will be hereinafter described and more particularly pointed out in the appended claims.

The p-referred form of my invention is shown in the drawings in which,

Figure 1 is a front elevation of a wringer having my improved releasing device applied-thereto; Fig. 2 is a partial sectional plan view taken along the. line 22 in Fig.

1, showing the lever in looking position; Fig. 3 is a view similar to Fig. 2 but show er and ing thelocking lever in position to release the pressure; Fig. 4 is a. sectional elevation taken along the line 44 in Fig. 2; and Fig.

5 is a detail view of one end of the locking lever. v Referring to Fig. 1, I have shown my improved releasing device as applied to a wringer of ordinary form having rolls 10 and 11 supported in bearingsl2 and 13, the

bearings 12 being integral with or fixed in the side frames 14 and the bearings 13 being vertically movable therein. A flat spring 15 rests upon the bearings 13 of the upper roll and may be provided with asocket 16 posi tioned to receive the end thrust of the regulating screw 17. The screw 17 is threaded into a nut 18 which is vertically slidable in the upper portion 19 of the frame of the wringer. The screw 17 is provided with the usual hand Wheel 20 by which pressure may be manually applied. The nut 18 has an off"- set vertical projection 21 upon one side thereof, said projection extending a substantial distance above the upper end of the nut. The nut with its projection is slidable in a recess 22,- having a portion 23 corresponding in cross section to the projection 21.

The frame 19 has an upward extension 24 connected to the body of the frame by the side members 25. The members 25 are separated by a cored recess within which is positioned the locking lever 26. The lever 26 is pivoted upon the screw 17 and is provided at one end with a handle 27 and at its oppo- .90 site end with a lug 28.

When the lever 26 is in mid-position, as shown in Fig. 2, the lug 28 overlies the offset projection 21 of the nut 18 and prevents upward movement thereof. Any desired tension may then be placed upon the spring 15 and thus transmitted to the bearings 13 and the roll 11, the upward thrust of thespring 15 against the screw 17 being resisted by the lug'28 which overlies the off-set projection 21. When the locking lever is moved in either direction from its mid-position, the

lug 28 will be moved out of alinement with direction. A. recess 29 is formed in the exwill be evident that many changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the claims. Accordingly I do not wish to be limited to the details herein disclosed, but- What I do claim is 1. In a wringer, in combination, a frame, a pressure regulating screw, a nut fitting said screw an said nut in depressed position, said means being movable in either direction from looking position to release said nut.

2. In a wringer, in combination, a frame, a bearing-tensioning means, a screw to regulate the'pressure of said means, a nut for said screw vertically slidable but non-rotatable in said frame, said nut having an upward projection, and a locking lever having a portion movable in a horizontal plane into the path of said projection to hold said nut depressed against the pressure of said tensioning means.

3. In a wringer, in combination, a frame, a bearing-tensioning means, a screw to regulate the-pressure of said means, a nut for said screw vertically slidable but non-rotatable in said frame, said nut having an offset projection, a locking lever having a portion movable into the path of said projection to hold said nut depressed against the pressure 'of said means, said lever engaging said projection when the lever is in midposition and movable in either direction to clear said projection, and a stop to limit the movement of said lever in each direction.

4. In a wringer, in combination, a frame, a bearing-tensioning means, a screw to regulate the pressure of said means, a nut for said screw vertically slidable but non-rotatable in said frame, said nut having a projection, and a locking lever having a lug movable into the path of said projection to hold said nut depressed against the pressure of said means, said lever being pivoted on said screw and partially rotatable thereon.

5. In a wringer, in combination, a frame,

a bearing-tensioning means, a screw to reguvertically slidable but non-, rotatable in said frame, and means to lock late the pressure of said means, a nut for said screw vertically slidable but non-rotatable in said frame, said nut having a projection, and a locking lever having a portion movable into the path of said projection to hold said nut depressed against the pressure of said means, said frame having a cored extension cast integrally therewith and said locking means being positioned between said frame and its extension and pivotally movable about said screw.

6. In a wringer, in combination, a frame, a bearing-tensioning means, a screw to regulate the pressure of said means, a nut for said screw vertically slidable but non-rotatable in said frame, said nut having an olfset projection, and a locking lever having a portion movable into the path of said projection tohold said nut depressed against the pressure of said means, said frame having an extension supported at either side on said frame and said locking lever being positioned between said frame and said exten,

sion and pivotally movable about said screw, the movement of said lever in either direction being limited by the supports of said extension.

7. In a wringer, the combination with a frame, a pair of wringer rolls, bearings for said rolls mounted in said frame, and means including a spring and a screw for putting pressure upon said rolls, of a quick release device comprising a nut for said screw vertically slidable but non-rotatable in said frame, and a locking lever movable in a horizontal plane, said lever being effective in mid-position to engage and hold said nut in depressed position against the upward pressure of said spring.

8. In a wringer, the combination with a frame, a pair of wringer rolls, bearings for said rolls mounted in said frame, and means including a spring and a screw for putting pressure upon said rolls, of a quick release device comprising a nut for said screw vertically slidable but non-rotatable in said frame, and a locking lever, said lever being effective in mid-position to engage and hold saidnut in depressed position against the upward pressure of said spring, and said lever being movable in either direction from mid-position to release said nut.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

STEPHEN M. MARSHALL.

Witnesses:

WALTER E. WILsoN,

CLARENCE F. WILSON.

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