US1831004A - Beater roll adjuster and indicator - Google Patents

Description

Nov. 10, 1931. B. c. HOPE 1,831,004

,B'EATER RbLL ADJUSTER AND INDICATOR Filed Jan. '27, 1951 2 Sheets-Sheet 1 INVENTOR 3% c.

YM 4A -ATTORNEY Nov. 10, 1931. Y B. c HOPE 1,831,004

BEATER ROLL ADJUSTER AND INDICATOR Filed Jan..2 7, 1951' 2 Sheets-Sheet. 2

e1 INVENTORJ 44- ATTORNEY Patented Nov. 10, 1931 I BERTRAM G. HOPE, '01 PORT HURON, ZlllIIC'HIG-AIT BEATER ADJUSTER AND INDICATOR Application 'filed January 27, 1981. Serial No. 511,47 6.-

My invention relates to new and useful i mprovements in beater roll adjusters and indicators. p

My invention relates particularly to beaters employed in papermaking to reduce wood pulp or other papermaking fibres to a pulp of the proper fineness in a liquid mass.

As usually employed the beater comprises a tub equipped with a stationary bed, plate over which the beater roll is positioned transversely ofthe tub.

The beater roll is adjustableverticallyto vary the clearance between the roll and the bed plate, and after the tub is charged with the stock and liquid the beater roll is gradually lowered toward the bed platelas the stock becomes comminuted'to thus reduce the stock to a desired hydration and freeness. v This lowering of the beater rollhas been accomplished manually and mechanically, but at a fixed rate withrespect to the speed of the beater roll.

This manual or the fixed mechanical low ering of the beater roll leaves much to be desired in the proper and, economical preparation of paper stock, for with the manual operation there is uncertainity of the skill of the operator, while with the mechanical operation it is known that stocks require different beating periodsflf-"and where a fixed mechanical lowering is employed it is impossible to vary the heating time allowed.

One of the important objects of my 1nventio'n is to provide a gradual automatic mechanical lowering of the beaten roll at various speeds to thus alter the beating time to suit the stock. n It is another'object of my invention to permit the continued operation of the beater roll after it'has been lowered to the down position to permit the making of a hydratlon and freeness' test without interrupting the beater operation. a

Another important object ofmy invention is to provide electrical means for disengaging the lowering mechanism at any predetermined point. I

A stillfurther object of my invention is to provide 'an adjustable gage and indicator that will permit the preparation of a uniform stock and indicate the osition of thebeater roll relative to the bed plate. Other important and incidental objects of my invention will be brought out in the annexed specification and subjoined claims.

In the accompanying drawings Figure 1 is aside viewof a conventional beater equipped with my beater roll adjuster and indicator. Figure 2 is a plan view of aronventional beater equipped with my beater roll adjuster and indicator. Figure 3 is an enlarged side view of my' beater roll adjuster and indicator.

Figure 4 is anenlarged plan view showing 1 a portion of a beater tub equipped wit-h my beater roll adjusterand indicator.

Figure 5 is a sectional view through my electrically controlled gear shift.

Figure 6 is another sectional view of my electrically control led gear shift showing the change gears. I

, And Figure 7 is'a detail view of my contactor and indicator mechanism.

' Referring now to Figures 1 and 2, I have shown a conventional beater construction, employing a .tub 1 having a mid-feather 2 to provide for the circulation of the pulp aroundits ends and under a beater roll 3 po- 'sitioned bet-ween the mid-feather and one side of the tub 1. v

The beater roll 3 may be of any suitable construction equipped with fly bars or lmives that co-act with the to concave surface of a bed plate 4. The bed plate is fixedly secured in the bottom of the'tub and. substan- 35 tially below the beater roll to provide a grinding action on the pulp as it passes between the two. q

The heater roll is provided with a shaft 5 extending transversely ofthe tub and midfeather, and has its ends journalled in bearings 6 and 7 in lighter bars 8 and 9, positioned at each side of the beater tub.

The lighter bar 8 is ositioned at a greater distance from the tu than the lighter bar 9, to receive on the shaft, between it and the tub, a drive pulley 10. (See Figure 2.) The lighter bars 8 and 9 are mounted within frames 11 and 11a to which one end of each bar is secured by a pivot'12, in the frames;

tional form,

The opposite free ends of each of the lighter bars are pivotally connected to worm screws 13 that extend vertically through the top of the frames 11 and receive on their projecting ends worm gears 14.

Secured to each of. the side framesbelow the gears 14 is a bracket support 15 for a bearing 16. The bearings 16 receive therethrough a shaft 17 that has secured thereto worm ears 18 and 19 that mesh with the gears 14.

Extending forwardly from and attached to the frames 11 below the bracket support 15 is a bracket 20 to which is attached a double reduction worm gear unit 21, and having a laterally extending driven shaft 22 to which there is secured a sprock t 23. (See Figures 3 and 4). r

Secured to the beater roll shaft 5 adj went the frame 11a, is a sprocket 24, to receive a sprocket chain 25 for a driving connection with the sprocket 23, to thus impart motion .to 'the latter when the beater roll is operated.

The reduction unit 21, which is of convenhas projecting from its side opposite the shaft 22, a drive shaft 26, to which is attached a gear shift and magnetic release,

- 27, likewise mounted on the bracket 20. (See Figures-3 and '4.)

The gear shift and magnetic release 27 comprises a housing 28 in the sides of which are journalled the shaft 26 and a change gear shaft 29., (SeeFigure 5.)

Freely mounted on the shaft 26 is a forked L shaped arm 30, between whose forked ends v31 adapted to engage an idler gear 32, rotat- I 44 from the top of the and slidably keyed to the shaft 26, is a gear on a stud 33secured in an anthe arm 30. (See Figably mounted gular extension 34 of ure 5.

Keyed on theshaft 29 within the housin 28 is a series of stepped gears 35, and keye to the outer end of the shaft 29 is a sprocket 36, arranged to co-act with a similar sprocket 37 on the shaft 17 to impart motion to the latter through a chain 38. Now, when the beater roll 3 is rotated through the means previous. ly described, motionwill be im drive shaft 26 at a reduced spee through the reduction unit 21.

When the desired speed selected, the arm 30 is shifted laterally to bring the gear 31 into alinement'with the desired one of the stepped gears 35. Then the free end-of the arm 30 is raised to rotate thle idler gear 32 into engagement with the latter and the shaft 29 will be rotated.

. When the arm 30 is raised, its free end is engaged by one of a series of notches 39 on the inside face of the latch 39,'integral with a latch bar 40, pivoted at 41. free end of the bar 40' is pivotally connected to the lower end of-a solenoid plunger 42. The .plunger 42 is supported within the solenoid magnet 43, that is mounted on a bracket housing 28.

driving engagement, and the sha arted to the' for the Shaft 17 is the solenoid magnet I tact the stri 55 is a 'spring tensioned brush on the horizontally extendmg The opposite J Now, as long the plunger 42 will be drawn into it and the latch 39" will hold the gears 31, 32 nd 35 in 29 will rotate the worm ear 14 through the worms 18 and 19. Whent ewormgears 14 revolve on the worm screws 13, gradually lowered ata uniform speed until the-electrical circuit through the solenoid and indicator is broken.

When the circuit is broken, a compression spring 45, surrounding the plunger 42, will force the plunger downwardl and release the latch 39 rom en agement with the bar 30.

This causes -a disengagement of the gears 31, 32 and 35 and the descentof the beater roll 3 will stop. However this does not necessitate stopping the beater roll.

In order to raise the beater roll sired up position, I have provided'on one end of the shaft 17 a hand wheel 46, by which means the shaft 17 may be revolved. (See Figure 4.)

- My contactor and indicator mechanism will .now be described:

' Secured to the gear 14 on the frame 11' is a flanged sleeve 46' having integral with its upper end, a worm 47 that engages a worm gear segment 48. The segment 48 is cut in the periphery of a contactor disc 49, that is rotata ly mounted ona stud 50, secured to a bracket 51. The bracket 51. is boltedlto the frame 11 and projects u Extending upwardly rom the bracket 51 and integral therewith is an arm 52 that has pivoted thereto a depending indicator 53 that is 'adjustably positioned between oppositely disposed set screws 54-54 that pass through lugs 54"- on the arm- 52. The lower end of the pointer is intended to registe'r with a gage mark 53 on the segment 48, when the beater .roll is in the desired up position.

To compensate for the wearing away of the bed plate, the set screws 54- -54? may be adjusted to bring the indicator 53 into registry with the ga e mark.

Mounted 1n; the face .of the contactor disc 49, and opposite the segment 48, is an arcuate insulating strip or band 55 to whose outer face issecured a contact strip 55 that does not have electrical connectionwith the disc.

One end of the strip 55 is provided- .with a V terminal 56 toreceive a flexib e lead 56 from 43. Positioned to con- 57, mounte ga e arm 57 and insulated therefrom.

. e arm is rotatably mounted on the stud 50 and is positioned between the bracket 51 and disc 49. Current is supplied to the magnet 43 and brush 57 by leads 58-59 fronf a source not shown. When it is desired to change the .down position of the beater roll, it'is only necessary to desired rotationgof the arm 57-.

as the magnet isenergized,

the beater r0113 will be to any dewardly therefrom. I

loosen the screw 60 to permit a The arrows indicating the direction of rotation of the various parts of the mechanism as shown at Figure 7 refer ,to the lowering ofthe beater roll, and as the disc 49 is revolved as indicated, the brush 57 will pass out of contact with the strip 55, and cause the magnet 43 to be rde-energized. This will cause the gears 31, 32 and 35 to disengage.

It is thus apparent that I have provided a beater roll adjuster and indicator that eliminates the human element in the lowering of a beater roll; that I have provided simple, variable, gradual lowering means, and simple control means for automatically stopping the lowering of the rblls without effecting the r0- tation of the beater roll. I have also provided micrometer accuracy in gaging the up position of the roll, and simple means for raising the roll manually likewise without effecting the rotationof the beater roll.

My method of compensating for the wearing away of the bed plate and roll bars is simple and eflicient. After setting the roll in the up position and observing the position of the brush 57 (relative to the strip 55*, the condition of or time required to complete the pulping operation is evident at any time.

Having describedmy invention; I claim:

, 1. In a beater, a' tub, a bed plate therein, a beater roll adjustably mounted in the tub above the-bed plate, and variable speed mechanism forgradually lowering the beater roll.

2. In a heater, a tub, a bed plate therein, a beater roll adjustably mounted in the tub above the bed plate, and variable speed gear mechanism for gradually lowering the beater roll.

3. In a beater,'a tub, a bed plate therein, a

beater roll adjustably mounted. in the tub' above the bed plate, automatic mechanism for gradually lowering the beater roll at a selected speed, and electricalmechanism for disengaging the lowering means at any predetermined point.

4. In a beater, a tub, a bed plate therein, a beaterroll adjustably mounted in the tub above the bed plate, automatic mechanism for gradually lowering the beaer roll at a selected speed, and magnetic release mechanism for disengaging the lowering means at any predetermined point.

5. In a heater, a tub, a bed plate therein, a beater roll" adiustably mounted in the tub above the bed plate, means for lowering the beater roll, a stepped gear connectedto the lowering means, driving means, and a slida able gear rotated by the driving means for engagement with one of the stepped gears to v actuate the lowering means at a selected speed.

a beater, a tub, abed plate iherein, a-

beater roll adjustably mounted in the tub above the bed plate, means for lowering the with the adjustable contact actuate the lowering means at *a selected speed, and electrical release means-for'dis engaging the shiftable gear from thestepped gear at any predetermined point in thedescent of the beater roll; v

7 In a beater, atub, a bed 'plate'therein, a beater roll adjustably'mounted in the tub above the bed plate, a stepped gear connected to the'lowering means, driving means, a slidable gear rotated by the driving means for engagement with one of the stepped gears to actuate the lowering means at a selected speed, and magnetic release mechanism for disengaging the shiftable gear from the stepped gear at any predetermined point in the descent of the beater roll.

8. In a beater, a tub, a bed plate-therein, a

Y beater roll adiustably mounted in the tub above the bed plate, automatic mechanism for gradually lowering the beater roll, means for disengaging the lowering mechanism at any predetermined point,.and manual means a for raising the beaterroll to its up position after it has descended to said predetermined point.

9. In a beater, a tub, a bed plate therein, a beater roll adjustably mounted in the tub above thebed plate, automatic mechanism beater roll adjustably mounted 'in the tub" above the bed plate, automatic mechanism for gradually lowering the beater roll, magnetic release means for disengaging the lowering mechanism, a contact rotated by the lowering mechan1sm,-a contact member ad justable to a set position in engagement with the rotatable contact, and an electrical circuit including the magnetic release means, the

rotatable contact and the adjustable contact member, said circuit adapted to be broken to stop the descent of the beater ,rollwhen the rotatable contact is moved out of engagement member.

11. In a beater, a tub, a bed plate therein,

a beater roll adjustably mounted in the tub above the bed plate, automatic mechanism for gradually lowering the beater roll, magnetic release means for disengaging the lowering mechanism-,a gear rotated by the automatic lowering mechanism, a second gear in mesh" with the first gear, a contact element carried by thesecond gear, a contact member manually adjustable in engagement with the contact element. to a set position thereon, and an electric circuit including the magnetic release means, the contact elementicarried by thesec- '4 mama 0nd gear and the manually ad'ustable contact member, said circuit ads. to be broken to stop the descent of the ater r011 when the contact element carried by the second gear 5 is drawn out of engagement with the ad ustable contact member.

In testimony whereof I have hereunto set my hand this 22nd day of January, 1931.

Y BERTBAM G. HOPE. 1o

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