US974964A - Method of and means for supporting rotary drums. - Google Patents

Description

A. B. HELBIG. METHOD OI AND MEANS FOR SUPPORTING ROTARY DRUMS.

APPLICATION IILIEIJ DBO. 22, 190B.

Patented NOV. 8, 1910.

2 SHEETS-SHEET 1.

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- War APPLICATION FILED DEG. 22, 190B.

Patented NOV. 8, 1910.

2 SHEETB-HEET 2.

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ALBIN BEBTHOLD HELBIG, 0F F-RANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR TO THE FIRM OF FELL-NER- & ZIEGLER, OF FBANKFORT -ON-THE-MAIN, GERMANY.

METHOD OF AND MEANS FOR SUPPORTING ROTARY DhUMS.

Specification of Letters Patent.

Application filed December 22, 1908. Serial No. 488,768.

' ed at both ends and when found necessary in the center also by pairs of rollers which are subjected to very great pressure. Such a rotary drum, owing to the action of gravity would move downward during rotation if the axes of the supporting rollers were not inclinedat a small angle to the axis of the drum. This position of the rollers by iself would cause a spiral upward movement of the drum and this upward movement-and the inclined position of the rollera'xes have to be so mutually adjusted with regard to the inclination of the drum toward the horizontal, that neither an upward nor a downward movement of the drum will result.

For this purpose the supporting rollers mustbe angularly adjustable. But this adjustment leads to two difiiculties. place as the surface lines of the supporting rollers are no longer parallel to the surface lines of the drum, therclis the danger that the drum will not rest or. the middle of the width of the supporting roller so as to obtain suflicient surface contact, but will bear X ter case pressures arise which in practice just the several rollersto the same angle and onone edge only of the roller. In the lathave often led to the destruction of the rollers. In the second place it is diflicult to adto distribute the load equally between them. The present invention is designed to overcome both these difliculties and to this end the adjustment of each roller in relation to the drum is effected in such mannertnat the rollers are automatically caused to re'- ceive the pressure at their mid-length and not on oneedge only, and each roller-bearing itself is movably mounted in such manner that it adjusts itself under the pressure of the drum. The similarsimultaneous angular ad'ustment of all the rollers in relation to t e-drum is obtained by positively connecting together the carrier plates of all the roller hearings in such manner that they will always stand under the same angle to the common base plate of the entire drum.

The invention will be described with reference to the accompanying drawing wherein- Figure 1 is a side view artly in section of a rotary drum, that roller which is toward the spectator being shown in the case of the lower pair,while in the case of'the upper pair the roller on the other side is,

shown. Fig. 2 is a plan view ofa set of four rollers. Fig. 3 shows, partly in section, the method of supporting one/i air of rollers drawn to a larger scale. i 4 shows a pair of roller supports viewe from above, only the bearin plate being shown in the case of the left and member of the pair, while the roller itself is shown in section in the case of the, right hand member.

Upoh the base I the bearing plates 2 are rotatably mounted on pivots'3. The bear ing plates 2 are provided with arms 4 which are connected by rods 5 in such manner that the whole of the bearing plates are constrained to turn together on their respective pivots 3. The bearing plates 2 carrythe slides 6 each upon a segmental ide- 7. This guide is arranged in a plane (Big. 3) which;

passes through the drum axis 8 and through the roller axis 9 when the two axes are set' parallel to each other. The radius of curv'ature of the ide 7 is struck from'a center coincident with thecontact point 10 between the roller 11 andthe drum- 12,'and the slide 6. can therefore be shifted Upon the guide 7 so that the roller is able to adjust itself. In addition, to the support affordedby the guide 7 the slide V6 is supported near; its.

upper part by two rods- 13 which, when the Patented Nov. 8, 1910. v

angular position of the bearing plates isw varied have for effect to insurethat the axes 9 'o f'the rollersshall participate infthe some movement. These rods 13 are arranged in such manner that when the axes 9 are parallel with the axis 8 both of said axes 8 and 9 lie in the plane of the middle line of curva-' ture of the guide 7. The axis of the pivot when prolonged upward must also pass through the contact point 10 of'the drum 12 with the supporting roller 11. Inthis man- 'ner a turning movement of the bearing block 2 can take place without alteration in the position of the point of support 10' while the drum will tend to ascend or descend upon 1 its supports occording as the bearing blocks are thus slewed'around. h

. The geometrical relations here given are those which represent the best way of carrying out'the invention, but-"in practice there may, within certain limits, be deviations from mathematical accuracy.

It is obvious that each of the two arrangements, i. e. the way 1D winch each supporting roller is mounted and the connection of the several rollers by means of positively acting mechanism, can be usefully employed in' ependently of each other, but that these two arrangements, when employed in conjunction with one another, render each other mutual asslstance'of a special character and thus enable the'perfect object to be obtained.

The automatlc adjustment of each slide '6 upon the-curved guide 7 is of importance also in case the furnace'should be heated while at rest, so as not to let it cool off beforethe next operation. Under these circumstances theupper'side of the furnace gets much hotter than the lower side and as a consequence a bendin of the drum results and the sup orting r01 ers automatically ad- 'ustthemse ves according to: the curvature.

urthermore, it would be possible to effect the automatic adjustment of the supporting rollers under the weight of the rotary drum during an angular variation in the position of the base lplate, by means of a positive adjustment w theaxis ofthe supporting roller, correspondingto'the turning movement of the bearing plates, would be produced. It is further to remarked that the adjusting movement of'the'bearing block is the movement of a i universal 'oint, the twoaxes of which pass through I; e point of contact between the drum to be su ported and the supporting "roller. 1 One 0 these axes is the which" may be drawn through this contact and which passes through t tively to the common ase; The second axis vertical pointof e point at whichthe bearing late is rotatable relapasses through the point of support in a i direction perpendicular to the plane of curvature 'of the segmental guide. From this ,itnecessarily results that the line, upon the surface of the supportin roller, which asses through the point 0 en port of the rum, always intersects the ongitudinal axial plane of the drum at the point of suprt P Now what I' claim and desire to secure by Letters Patent is the following:

7 '1. The combination of a rotary drum,

' supporting rollersvfor said drum, and means for changing'the relative angle between each roller arms and the axis of the drum.

2. The combination of a rotary drum,

supporting rollers for said'drum, and means for changing the direction of each roller axis .while leaving the drum axis unchanged.

segmental guides in which. sai

movable and rods for engaging and supportereby a swinging movement of 3. The combination of a rotary drum, supportmgrollers for said drum, and an adjustable support for each roller, said ad-' just-inent being in the plane common to the roller axis and to the point of contact between roller and'drum.

4. The combination of a rotary drum, segmental guides, slides movable in said guides and. rollers rotatably mounted on said slides for supporting said drum.

fijlhe combination of a rotary drum, rollers for supporting said drum, slides on which said rollers are rotatably mounted, and segmental guides in which said slides are movable, the curve of each of said guides being. struck from the oint of contact; be tween each roller and t e drum.

v 6. The combination of a-rotary drum, rollers for supporting said drum, slides on which said rollers are rotatabl mounted, slides are ing the said slides at their upper portions.

7. The combination of a rotary drum,

rollers for supporting'said drum, slides on which said rollers are rotatably mounted,

and segmental guides in which said slides are movable, said guides being fixed to rotatable'bearin plates. 7

8. The com ination of a rotary drum, rollers for supporting said drum, slides on which said rollers are rotatably mounted, and segmental guides in which said slides are movable, said guides being fixed to ro-' tatable bearing plates, and said plates being each rotatable about an axis which extends through the point of contact between each roller and the drum. 9. The combination of a rotary drum, rollers for supporting said drum, slides in which said rollers are rotatably mounted, segmental guides in which said slides are movable, sald guides being fixed to rotatable bearing plates, each of which is rotatable about anfaxis which extends through the point of contact between each roller and the drum and rods connecting all of the plates together to cause said plates to move in unison. Y

10. The combination of a rotary drum, supporting rollers for said drum, a support for each roller, a bearing plate for each sup port, means for adjusting said support circularly upon the bearing plate and means for independently. adjusting said bearing plate circularly.

11. The combination of a drum, rollers for supporting said drum, movable supports for said rollers and means for causing'all of said supports to move in unison.

I 12. The combination of a drum, rollers for supporting said drum, supports for said 'rollers, rotatable plates'for carrying said supports and connectionsbetween said plates to cause them all to move in unison.

13. The combination of a drum, rollera for supporting said drum, Hlltl' rotatable plates on which said rollers are mounted, said plates being each movable about an axis which extends through the point of Contact between the rollers and the drum.

14. The combination of a drum 1Oll0l for supporting said drum, and mtatable plates on which S1l(l.I0llC]S are mountcd, said plates being each movable about an axfls which extends' througln the point of cditaot between the rollers and the drum, and connections between each of said plates to cause them all to move in unison.

15. The combination of a drum, rollers for supporting mid drum, bearing plates rotatably mounted on a base and supports for the said rollers rotatably mounted on the bearing plates.

In testimony. that I claim the foregoing as my invention I have signed my name in presence of two WitIICSSOS this eighth day of December 1908.

J\TJI))IN llllli'lllOliD llELIlIG.

\Y itnesses:

I-lnmiuou Boos,

ALFRED Anwn'i.

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