US1552658A - Beater roll - Google Patents

Description

Sept. 8, 1925.

w. WERNER BEATER ROLL Filed April 28, 1925 ATTORNEY.

INVENTOR. BY M fl/WW Patented Sept. 8, 1925.

UNITED STATES PATENT QFFiCE.

WALTER WERNER, OF HOOSICK FALLS, NEVJ YORK, ASSIGNOB, TO THE NOBLE 6c VIOOD MACHINE 00., 0F HOO'SICK FALLS, NEiV YORK, A CORPORATION OF NEW YORK.

BEA'IER ROLL.

Application filed April 28, 1925.

To all whom it may concern:

Be it known that I, VJALTER WVERNER, citizen of the United States, residing at l-Ioosick Falls, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Beater Rolls, of which the following is a specification.

This invention relates to beater rolls for beating engines, and particularly to the formation of the heater-bar and the bar-receiving recesses in the roll heads into which the bars are inserted and locked by means of locking wedges, so as to form what are known as bandless rolls.

In order to produce a satisfactorily secure attachment of the beater bars to the heads of the rolls, and to insure proper alignment of the bars when locked in place, it has been the quite general practice to machine a part or all of the bar-receiving recesses in the roll heads in order that the recesses in one head might coincide exactly with the recesses in the other, so that when the bars are locked in place therein they will lie in exact alignment. The proper alignment of the beater bars is very desirable, and in practice it has heretofore been found to be extremely difficult to obtain the desired alignment of the bars when unfinished cast barreceiving recesses were used, due to the various causes which contribute toward inaccuracies in heavy castings such as are used to make the roll heads.

The object of this invention is to make feasible the use of cast bar-receiving recesses without the necessity of finishing the same, and at the same time make possible the proper aligning of the bars and the securing of the same in place by means of wedges, regardless of such inaccuracies in the heads as cannot be overcome by ordinary careful moulding of the same, and to make feasible he substantially perfect alignment of the bars in both the horizontal and vertical planes without the necessity of machine work on the heads other than the boring for the shaft and the turning of the rims thereof.

I accomplish my objects by making use of peculiarly shaped beater bars, bar-receiving recesses, and locking wedges, and by inserting the wedges at a point which lies between a pair of accurately surfaced Serial- No. 26,538.

spaced bearing points formed by the turning of the rim of the head of the roll.

My improvements are clearly shown in the accompanying drawings, in which:

Fig. 1 is a longitudinal section through one side of a head of my improved beater B the beater bar; and WR, l/VL, the right and left hand locking wedges.

My improved beater bar is rolled to exact form from any suitable material, usually steel, and preferably has a cross section substantially as illustrated. Lengthwise of each side of the bar B are formed spaced parallel ribs 525 and b7); the ribs 1)?) lying along the lower or inner edge of the bar, that edge of which is adapted to seat against a finished annular shoulder or ledge A on the head A, when the under side of the rib M is seated against the finished surface A of the rim of the head. The ends of the bar may be notched out (on the lower side) up to the ribs bt, leaving an overhang adapted to contact with the surface of the roll head rim which lies outside of the end of the recess, R.

The bar-receiving recesses in the head have a cross-section substantially as illustrated in the drawings. The bottom of the recesses are substantially flat and rectangular in plan and lie below the level of the top of the annular ledge A the side walls retreat for most of their height so that the recesses flare toward both the top and side entrances thereto, the upper portions of the side walls drawing toward each other so that side ledges A are formed along the top entrance, the under side of" said ledges tapering up and towards the side entrance to the recess. The under sides of the ledges A are adapted to contact with the upper side or edge of the locking wedges when they are driven to place.

7 At the head end of this irregular shaped side is a side projecting cross rib N", between which rib and theinner face of the rim of the head a pointed tool may be driven so as to loosen the wedge when it is desired to withdraw it for the purpose of freeing the bar so that it may be removed from the roll.

The bars having been lowered into the bar receiving recesses in the roll head, are locked in place by driving a wedge along each side thereof. The bottom of the wedges contacting with the upper side of the ribs bi), the tops with the tapered under side of the ledges A Should the pair of bar-receiving recesses of the pair of heads not lie in exact alignment, the beater bar may still be locked in alignment by driving one wedge further than the other, or by using wedges of unequal thickness and if necessary reversing the position of the thick and thin wedges at the other end of the bar.

By forming the ribs in, along the sides of the beater bar at a point in its width where the under side of them will contact with the accurate surface A when the bottom edge of the bar contacts with the accurate surface A I provide support for the bar across the whole of the rim of the head and so prevent the driving of the locking wedges from drawing down the ends of the bars and causing the centers to arch, as at times happens with some present types of roll construction.

The usual shaft, intermediate bar sup ports, and wood filler strips are to be used in this roll.

In this improved beater roll the beater bars are securely and detachably held accurately in place without the necessity of finishing the bar-receiving recesses in the heads. The only machining which is actually nec essary is the boring for the shaft and the turning of the surfaces A and A the rolls being thus very inexpensive to produce and no loss of accurate alignment of the bars is experienced, for by using a wedge on each side of the bar I am able to compensate for any inaccuracies in the alignment of the cast recesses which cannot be eliminated by ordinary careful casting. In addition, I have insured the bars against arching due to the drawing power of the locking wedges.

I claim:

1. In a heater roll: the combination of a pair of heads mounted on a shaft, each head having a ledge formed on the inner side thereof and below its rim, and a series of bar-receiving recesses spaced about its circumference the side walls of said recesses flaring apart toward both the top and side openings thereto but drawing toward each other at the top to form abutments which restrict the width of the top opening; beater bars fitting loosely in said recesses and having a ribformed along each side at the lower edge thereof, and a rib parallel to said first mentioned ribs and adapted to contact with the top of the rim of the head when the bottom edge of said bar is in con tact with the top side of said ledge; and a pair of locking wedges one on each side of said bar and co-acting therewith to lock same against lateral displacement, the top of one of said wedges contacting with the under side of one of said abutments and the lower side of said wedge contacting with the upper side of one of the ribs along the lower edge of said bar so that the driving of the wedge will force said bar to a seat and lock it against vertical displacement.

2. A head for a beater roll, having an annular ledge formed on the inner side thereof, a series of circumferentially spaced bar-receiving recesses formed in and opening through the top and inner side of said rim, the bottom of saidrecesses lying below the top of said ledge, the side walls of said recesses flaring apart as they approach both the top and side openings thereto the tops thereof drawing toward each other and forming a pair of rib-like abutments which restrict the top opening to the recess and the under sides of which taper upwardly as the end opening is approached.

3. A beater bar for a beater roll comprising: a bar of metal having a longitudinal rib formed on each side thereof and adapted to contact with the surface of the rim of the roll head when the bar is in place therein and the bottom edge of the bar is against its seat, the inner half of said bar tapered from said rib toward the inner edge of the bar and having a rib formed along said inner edge on each side of said bar.

In testimony whereof I have affixed my signature.

WALTER WERNER

Images