US1318950A - Compa - Google Patents

Description

A. J. ALUSON.

BEATER ROLL,

APPUCATION FILED FEB. 25,1919. mwfim. Emma Oct. 14,1919.

- 3 SHEETS-SHEET i.

IN V EN TOR.

A TTORNEYS.

j. ALLESGN.

HEATER ROLL. APPLICATI'JN man FEB. 25. 1919.

Pateme @ct. 1 1, 1919.

-- 3 ShEETS-SHEEF -2- A .ALLSSOM,

I BEATE'R Ron; APPucm'ou min FEB. 25. leis;

Patented Oct. 14,1919.

3 SHEETS-SHEET 3- INVENTOR.

v trams .srarns PATENT OFFICE.

' I "ALBERT J. ALLIson, or mwromonro; ASSIGNOR TO THE A. A. snvronns & SON

4 1 COMPANY, or DAYTON, OHIO, A CORPORATION OF OHIO.

ZhrzZZ-gvhmnfit may) concern: 'Be. it known that I, ALBERT J. ALLISON,

residing atDayton, county of Montgomery,

,and Stateaof 'Ohio, have invented certain new and useful- Improvements in Beater- Rolls,:of which -thefollowing is a full, clear,

and exact description.

5 My invention relates to the class of beater rolls, wherein the fly barsare secured to the roll by resilient clamping devices. The first of this class of rolls was disclosed in my Patent No. 1,273,982, issued July 30, 1918,

Whereinan embodiment of the principle Was broadly-claimed.= In my application now pending, Serial No. 233,791, filed July '21, 1917, I have disclosed another embodiment of the principle, which is an improve me'nt over the first in that each bar is secured to the' roll by a separate clamping, device that permits any bar to' be removed and-replaced without loosening or in any way disturbing the other bars in the roll. In the present invention I provide for securing :the bars either inpairs or singly. -W'l1en secured singly any bar can be removed and replaced without disturbing any of the other bars; in the construction where they are'secured in pairs there is a single fastening device at each end of each pair of bars, each device securing one end of both bars- Provision ism'ade for equalizing the tension 'onfthe'bars of a pair so that both will beheld by aneq'ual tension.

Whether secured singly or in pairs, the securing means is a clamping element or lever partaking of the nature of a beam supported at two points, with the bar or barsattached to the beam at a third point, the beam being put under a strain which reflects it more or less, so that the bar is heldto its seat by the resiliency of the beam. Although my invention is intended, pr

' rolls of certain types.

"marily for use in building new beating engines,-it is peculiarly adapted to use in old In oneyof these types, one in very common use, the ends of the fly bars are notched and are secured to the roll byiron rings heated and dropped into the circle of notches, thering being expected equal number of bars.

BEATER-ROLL.

Specification of Letters Patent. Patented Oct, 14 1919, *Applieation filed February 25', 1919. Serial No. 279,161.

to shrink and draw the bars tightly to their ,seats, which are usually slots formed in the other changes than replacing the old bars by new ones, or even using the old bars in some cases, these old rolls can be equipped with my improvement and endowed with all of the advantagesit possesses. The form of device by which the bars are secured in pairs has all of the merits of the single device, besides being far less expensive. It is preferable, therefore, to build rolls with an Among old rolls an uneven number of bars is Ioften found, in which case one bar can be secured singiyand the remainder in pairs. reason it is found expedient to do so two or more of'the bars maybe secured singly and the remainder in pairs.

In the accompanying drawings,

Figure 1 is a longitudinal section of a roll equipped with my in'iprovement, showing the type wherein the bars are secured in pairs.

' Fig. 2 is a portion of a transverse section On line 2. of Fig. 1.

Fig. 3 is a. fragmcntal view looking between two fly bars toward the shaft. c

Fig. 4; is a longitudinal section of a roll equipped with a modified form of my device for securing the bars in pairs.

Fig. 5 is a portion of a transverse section on line 5 of Fig. 4.

line 9, Fig.

If for any,

Fig. 10 is a fragmental view looking in between the bars toward the shaft.

Fig. 11 is a longitudinal sectional view of one end'of a roll showing another modification of my invention.

Referring now to Figs. 1, 2 and 3, the roll comprises a shaft 25 on which are rigidly fixed two heads 26, having inwardly extending flanges 27. The' perimeter of the heads is provided'with seats for the fly bars 28, in the present'case slots 29. Each of the bars is pierced near its inner edge'a short distance from each end to provide apertures for bosses or trunnions 30 projecting from each side of levers 31. In assembling the rolls two bars are placed in juxtaposition with a lever 31 between them at each end and the trunnions in the apertures. With the levers rocked to a position where they will be clear of the flanges 27 as at A in Fig. 1 the bars are dropped into their respective seats. Each lever carries a. set screw 32 at its head end which when the lever is in its normal position abuts the inside of the flange-27. When the lever is in the position shown at A this set screw can be turned in or out so that the lever will lie in the desired position when the end of the screw rests on its abutment, the screw being finally secured against-movement by a jam'nut 33.

As an abutment for the tail end of thelever I provide a yoke 40, carrying a set screw 41, the end of which stands in a socket 42 in the tail end of the lever. The yoke comprises a cup shaped member 43 capable of passing between the fly bars, and a cross piece, or the yoke proper, which lies crosswise and bears against the inner edges of the two bars. After the position of the lever has been fixed the yoke is let-down between the bars with the cross piece turned endwise, as at B, Fig. 1, the end of the set screw 41 entering the socket. The yoke is then rotated one fourth of a turn, bringing it crosswise under the bars, and is held in this position while the set screw is screwed down, which raises the yoke up against the bars and bears down on the tail end .of the lever. The ends of the cross piece are pro vided with lugs 44 which lie at the outsides of the bars and together with the mem-' ber 4-3 lying between the bars and the setscrew. in the socket form an interlock which 5 5- prevents the tail end of the lever from becoming disengaged from the .bars.

The heads of the set screws 41 .have transverse holes in which cotter pins 45 are inserted,

said pins lying in notches 46 in the rim of vent corrosion at this point where acidulated Water might accumulate and stand.

7 The lever 31 is in the nature of a beamsupported at its ends, with a. load concentrated at a point intermediate its ends. Screwing down the set screw 41 flexes the lever more or less and puts a tension on the lateral projection which carries the trunnions 30, this tension drawing the bars firmly to their seats. The resiliency of the lever maintains this tension constantly notwithstanding changes in conditions which might relax tension obtained by other means. For example: in the present case the fly bars are tapered in cross section, which makes flaring slots necessary in the heads, it being desirable that the .bars fit rather snugly in the slots. In case a bar is too snug it m ght not go at once to the bottom of the slot, but do so later on. It is not to be understood that I expect my device to care for a large slip of this nature or of any other kind. But because of the deflectionbf the levers and their resiliency, a small readjustment or settling .of the parts may occur without theirbecoming loose or their efliclency in any way impaired, where if they were secured by means which did not provide such a reserve of clamping ower; e. 9., by bolts acting directly onthe ars and reacting directly on the heads, they might become lose. In fact, experience has shown that clamping devices which do not have this reserve power are not reliable. Another factor in the stability of the clam-ping power of my device is its ability to equalize the strain on the two bars. Both abutments for the lever being substantially mere points,

acting in a common plane midway between I the bars, the lever is able to rock one way or the other until both trunnionscarry an equal strain. Another factor which is to be :noted is thena hency of the bars themselves. The extent to which this factor comes into play will depend on the relative rigidity of the bars and clamping elements.

In Figs. 4, and 6 the roll comprises the same shaft 25, heads 26, flanges 27,-bars 28, slots 29, trunnions 30 and levers 31, ex-

cept that the levers do not have the set screws at their head ends or sockets at their tail ends. In place of the former I tap holes 50 and screw set screws 51. into the flanges 27. At the tail ends I provide yokes 52 which are pivotally attached to the levers." The bars are assembled in pairs with levers between them and dropped into their seats in the manner already described, the

levers being rocked to a position where their head ends will clear the flanges27, as at A.

Then the levers are rocked to a position about as B, which permits the yoke, which has meanwhile been turned lengthwise of the lever, to be turned cross-wise. 51 are then screwed down until the yoke bears against the lower edges' of the bars 7 '12s The screws ,function in the manner described.

and the desired strain is put upon. the levers. While this type of clamp may be referred in some cases, the one shown in i s. 1, 2 and 3 is preferable where an oldro l is be ing modified, because the work will generally be done in a place where the facilities for drilling the hole are not good. Therefore it 'is preferable to do the drilling in" the factory, which can bedone where the clamps carry the set screws.

. In Figs. 7 to 10 inclusive is shown the device for securing the bars singly. This structure again comprises the shaft 25, heads 26, flanges27, fly bars 28 and slots 29. The levers I will now designate-by the numeral and they are provided with bosses 61 and 62 which extend into suitable apertures in the bars. Inasmuch as the strain is not balanced. in this structure as it is in the two previously described structures, I secure the levers to the bars by cap screws 63 screwed into the bosses 61. In assembling the roll a bar is set inplace, and then the lever is put in, place and secured with the cap screw. Then by means of the set screws 64 the desired strain is put'upon the levers, the efiect of which is the same as has been" described. That is, the lever isin effect a beam resting at both ends and carry ing a concentrated load intermediate its ends, at the iug 61. The lugs are made loose enough in the apertures so the lever can The set screws 64 have extensions65; I drive the usual wood fillers 66 between the bars, pro- \iding suitable holes through which the screwspass, and give additional security to the fillers by screwing nuts 67 on the ends of the screws.

Reverting to Figs. 5 and 6, it will be seen that the left hand bar in each of these figures 'issecured by the single device I have just described, the remainder of the bars being secured in pairs. It is evident that tlu form shown in Figs. 1,2 and3 can also be used in connection with the single device in equipping rolls which have an uneven number of bars. The heads 26 shown in the present application are of the" type commonly used in rolls whose fly bars are secured by ironrings shrunk on the ends of the bars, previously referred toand since this type of head lends itself excellently t0 the use of my improvement I have employed it in the presentillustrations. It is evident, however, that this type of head is not essential to its success. Other structures which afl'ord proper support for the bars and suitable sions which might catch a'ndi'etain parts of the paper pulp i In Fig. 11 I show a structure in winch a disk 70 ismounted on the shaft 25, and instead of abutting the Liars the tail end of the lever 71 is drawn down to ()iftOWillTl theperiphery of the disk by .a screw 72.

While I have disclosed the preferred embodiment oi" my invention, and three modifications thereof, it is not to be supposed that I consider that these exhaust the possibilities carrying abutments and seats for fly bars;

fly bars occupying said seats; clamping elements secured to the bars and coniprising members which bear on said abutn'lents, the bearing points of said abuti'nents being set screws whereby pressure may be applied to the members that bear thereon to clamp the bars tot-heir seats. p

3. In a beater roll, supporting elen'ients carrying abutments and seats for fly bars; a pair of fly bars seated thereon, a clamping element comprising a lever having a trunnion extending from each side, one of said trunnions entering an aperture in each bar, the lever being thus enabled to rock so as to bring its head end under one of said abutments, a yoke which spans'the bars and acts as an abutment for the tail end of the lever; and means tor-putting-the lever under va strain which through reaction on the'two abutments holds the bars firmly to their seats.

4:. In a beater roll, supporting elements element comprisinga lever having atrun nion extending from each side, oneof said trunnions entering an aperture in eachbar, the lever being thus enabled to rock sagas to bring its head end under one of said abutments, and a yoke adapted to span the two bars. having a set screw in the middle adapted to enter asocket formed in the tail end of the lever and whereby the lever may be' put under a strain which draws the bars firmly to their respective seats.

5. In a beater roll, supporting elements carrying abutments and seats for fly bars; a pair of fly bars seated thereon, a 'amping element comprising a lever having a trunnion extending from each side, one of said trunnions entering an aperture in each bar, the lever being thus enabled to rock so as to bring its head end under one of said abutments, the head end of the lever carrying a set screw whereby the position of its tail end can be adjusted, said tail end being provided with a socket; a yoke which spans the bars and acts as an abutment for the tail end of the lever, and having a set screw whose end enters said socket, and means 'for locking the set screw.

6. In a heater roll, supporting elements carrying abutments and having seats for fly bars; a pair of fly bars, a pair of levers between them and trunnioned thereto, one lever being near each end of the bars, so that after the bars are in their respective seats the levers can be rocked and their outer r0 ends brought to bear under the abutments;

and means for retaining the levers in position underthe a'butments and for putting them under a strain which, reacting through the trunnions, holds the bars firmly to their 15 seats.

7. In a beater roll, a shaft, two heads rigidly fixed thereon, each having an inwardly extending annular flange, the periphery of said heads having slots to act as seats for fly bars; apair of fly bars, a pair of levers between them, one near each end, attached to the bars by trunnions, so that the levers can be rocked to a position permitting them to clear the flanges on the heads as the bars are being put in their seats, and then rocked to a position where their outer or head ends impinge the inside of the flanges; yokes spanning the two bars and confined between the inner edges of the bars and the 40 'tail ends of the levers; and meansfor putting the levers under a strain which by bearingon the flanges and yokes reacts on the bars and holds them to theirseats.

8. In a beater roll, supporting elements having seats for fly bars, fly bars, clamping devices secured to the fiy bars, set screws 'in the supporting elements which bear on said clamping devices and through them hold the bars to their seats, said set screws having outwardly projecting extensions, wood fillers driven between the bars, said fillers having holes through which said extensions pass, and nuts screwed thereon to cure the Wood fillers.

9. In a heater roll, a fly bar, a support having a seat for said bar, a beam, means for attaching the beam to the bar, two abutments on which the beam bears,, said abutments'being removed from the point at 60. which the beam is attachedtd the bar, one

of. the abutments being carried by the bar itself, and means for moving one of the abutments, thereby putting the beam under a strain which reacts on the bar through for attaching the beam to the bar, two abutments on which the beam bears, said abutments being at points removed from the point at which the beam is attached to the bar, and means for moving one ofthe abut ments, thereby putting a strain on the beam which reacts on the bar and holds it to its seat.

12. In a beater roll, a fly bar, a support having a seat for said, bar, a beann'means for attaching the beam to the bar, two abutments on which the beam. bears, said abutments being removed from the point at whichthe beam is attached to the bar, one of the, abutments being the bar itself, and means for putting the beam under a strain which reacts on the bar through said attachment and holds it to its seat.

13. In a beater roll, two fly bars, a support having seats for said bars, a beam, means for attaching the beam to the bars, two abutments on which the beam bears, said abutments being at points removed from the point at. which the beam is attached to the bars, and means for putting the beam under a strain which will react on the bars through said attachment and hold the bars to their respective, seats, the abutments being so situated and the attachment of the beam to the bars of such character that the strain is enabled to equalize and act substantially the same on both bars.

14;. In a beater roll, two 'fiybars, a support having seats for said bars, a beam, means for attaching the beam to the-bars, two abutmentson which the beam bears, one of said abutmcnts being carried by the bar, and means for moving one of the abutments, thereby putting the beam under a strain -which will react on the bars through said attachment and hold the bars to their respective seats.

15. A beater roll comprising a supporting element and fly bars spaced around said element; means whereby a portion of said bars are secured to said element in pairs, each pair being attachable thereto and removable therefrom without aifecting the security of disturbing any other bars; and means fer securing one or more of the barsto said element snugly, so that said bar, or each bar if there are more than one,

Clui be attached thereto or removed therefrom without affecting the security of or disturbing any other bar.

16. A beater roll comprising a supporting element and fly bars spaced around said element; resilient means whereby a portion of said bars are secured to said element in pairs, each pair being attachable thereto and removable therefrom without affecting, the

10 security of 01' disturbing any of the other bars; and resilient means for securing one or more of the bars to said element snugly so that said bars, or each bar if there are more than one, can be attached thereto or removed therefrom without affecting the security of or disturbing any other bar.

In testimony whereof I afiix my signature in the presence of two subscribing witnesses.

ALBERT J. ALLISON. Witnesses:

F. K. FASSE'IT, J OSETH A. WORTMAN.

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