US2199079A - Wringer - Google Patents

Description

R. I. MINER April 30, 1940.

WRINGER Filed Jan. 11,1957 2 Sheets-Sheet 1 A TTORNEYJ.

R. I. MINER WRINGER -2 Sheets-Sheet 2 Filed Jan. 11, 1937 t I INVENTOR a M7: er,

uel-z BY ATTORNEYJ.

Patented Apr. 30, 1940 UNITED STATES WRINGEB Robert I. Miner, Salem,

Ohio, aslignorto Mullins Manufacturing Corporation, Salem, Ohio, a corporation of New York Application January 11 6 Claims.

The object of my invention is to provide a mechanism by means of which desired pressure relationship between the two rolls may be readily established and disestablished without dis- 5 turbance of the fundamental setting of the pressure springs, and of such character as to present a neat and effective appearance when the parts are in their normal working relationship.

The accompanying drawings illustrate my invention:

Fig. 1 is a fragmentary elevation, in partial vertical section, of a structure embodying invention, N

Fig. 2 a fragmentary end elevation in partial vertical section,

Fig. 3 a section on line 33 of Fig. 1,

Fig. 4 a fragmentary vertical elevation of a modification,

Fig. 5 a fragmentary vertical section showing 20 another modification,

Fig. 6 a section on line 6--5 of Fig. 5, and

Fig. '7 a fragmentary section of another modification.

In the drawings l indicates a U-shaped base,

25 preferably formed of sheet metal comprising end uprights II and I2 U-shaped in cross section, as indicated in Fig. 3. Within each upright and I2 is a vertical U-shaped guideway I4 adapted to receive and guide the bearing blocks 30 I and I6 respectively for the trunnions of the lower roll I! and upper roll l8. Secured to the inner face of the end wallof upright I2 is a plate l9 provided with spaced ears 20 projected through perforation-2| in said end wall. Pivoted 35 between ears 2|) on pin 22 is a link 23, the other end of said link being pivoted on pin 24 carried by ears 25 of a plate 26 secured to the inner face of ahand lever 21 which is U-shaped in cross section, as indicated in Fig. 3. The side walls 40 of lever 21, at its upper end, are projected beyond the middle of the wall (as indicated in Fig. 1) to straddle the hollow bridge wall 25 and these projecting ends are pivoted upon pin 29 carried by the bridge bar 28. In the assembly thus de- 45 scribed, thelever 21, link 23, and pivotal connections 24, 22 and 29 form a permanent toggle link connection between the base and one end of the bridge bar.

The outer wall of standard near its upper end carries an outwardly projecting pin 30 over which perforations 3| in one end of bridge bar 28 may be projected. Within bridge bar 25 is a bow spring 35 suspended at its middle, by

means of grip 35, upon the lower end of screw 31 threaded in block 35 of bridge bar 24 and pro- 1937, Serial No. 119,961

vided with an operating head 39, screw 31 being rotatable relative to spring 35. The opposite ends of spring 35 rest' upon the two bearing blocks l5 and adjustment of screw 31 determines the initial pressure of said spring upon the bear- 5 ing blocks l5 and the upper roll l8.

Secured to the outer face of the end wall of upright |2 is the upper end of a spring 40, the lower end of which is bent to properly coact with a latch 4| anchored at 42 in base l0 and yieldingly urged upwardlyby means of a spring 43 surrounding an abutment screw 44 threaded *at 45 in'base I0 and provided with check nut 46. The parts are so proportioned and arranged that with the right hand end of bridge bar 28 anchored upon pin 30 (Fig. 1) and hand lever 21 depressed to its lowest position, pivot 24 of the toggle will have passed dead center as referred to the pivotal anchorage 22, thereby stressing spring 40 to permit engagement and retention thereof by latch 4|, this movement stressing spring 35 upon bearing blocks l6. With the parts in the above described positions, link 23 is prevented from further swinging counterclockwise by engagement with the fastening screws 50 which retain spring 40 in place. For the purpose of quickly releasing the upper roll 3 from the influence of spring 35, I pivot upon channel M, of upright l2, at 5| a latch release lever 52 which,

at its lower'end, is notched at 53 to straddle a cam ridge 54 of latch 4|. Within upright II is pivoted a lever 52' similar to lever 52, notched at its lower end like lever 52, said notch straddling a cam ridge of a plate 4|" similar to latch 4| except that the latch tip is omitted and-upwardly spring urged by a spring 43'. I I

The upper end of each of levers 52 and 52' is provided with oppositely extended arnis 55, 55, which are projected through perforations in the, side walls of the enclosing standards .l2 and H and these arms are connected by hand engageable plates 56, 56 each of which extends across a face of the structure parallel with the bridge bar, the arrangement being such thatwhen either one of the plates 55 is pushed toward the adjacent uprights, notch 53 acting upon cam ridge 54 will withdraw latch 4| from spring 40 to permit said spring to move the lower end of hand lever 2'! outwardly to a point where pivot pin 24 will .have been moved clockwise (Fig. 1) to a point so slightly beyond the dead center of the toggle link, whereupon spring 35 will be eflective to cause continued clockwise movement of link 23 until the entire stress of spring 35 upon bearing block I6 will have been relieved. ll

Images