US1112220A - Driving mechanism for rolling-mills. - Google Patents

Description

I. KENNEDY.

DRIVING MLGIIANISM IOR ROLLING MILLS.

APPLICATION FILI-3D 001222, 1913. 1, 1 2,2211l Patented Sept. 29, 1914.

2 SHEETS-SHEET 1.

J. KENNEDY.I

DRIVING MECHANISM FOR `ROLLING MILLS. APPLICATION HLED 001522.1913.

1, 1 1 2,220. Patented sept. 29, 1914.

2 SHEETS-SHEET 2.

WITNESSES INVENTOR yiwefmm/ Net, tm yp/@ZJ j @eeeeeweeemt reference being had to/the accomlmnyingv PATENT oEEIcE.

UNTTED sTATEs JULIAN KENNEDY, or rITTsEUEGH, PENNSYLVANIA.

vDRIVIN G MECHANSM FOR ROLLING-MILLS.

. rspecification off Letters Patent. Patented Sept, 291 1914;.

Application tied october 22, 1913. seriarlvo; 7963071 To all echomz'tmcg/ concern: l

.Be 1t known that I, JULIAN KENNEDL-a citlzenl of the United States, residlngat -littsburglnin the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Driving- Mechanism for Rolling-Mills, of Vwhich the -following is a full, clear, and .exact description,

drawings, forming part of this specification,

y in which- My invention relates to gear-driving mechanism for rolling mills, and is designed to reduce the number of spare parts kept in stock, and to provide asimple andetiicient driving mechanism for the rolls which will avoid torsion on the shaft of the driving pinion and allow interchanging of the driv ing gears one for the other.` Y j Referring to the accompanying drawings,

in which I have shown my inventionas ap' ,plied to a three-high mill, the numeral '2,

designates the top roll of the' mill,'3 the intermediate roll, and 4 the lower roll.v

5 and 6 designate .the drive shafts for the rolls 2 and4, respectively. These 'shaft's are journaled in parallel relation, one above another, in an auxiliary housing 7 which `is in endwise alinement with', but at a distance from the main housing 8. The two shafts 5l and 6 are connected wlth the=respective rollsv 2 and 4 by means of the usual spindles V9 and l0.

' Rigidly secured toleach of the shafts and 6 is a gear wheel 11. These gears -11 ,are of relatively large diameter and are placed in adjacent vertical planes infoverlapping arrangement. The gears are helical or herringbone type. l I y 12 designates the driving` shaft upon which is formed, or to which vis secured a pinion portion which engages the teeth of both the gear wheels. 11. The'pinion portion forms a double pinion, the partsl and n 14 thereof 'which lmesh with the respective j gear wheelsll being reversed with respect torvveach' other, vthe teeth `on the two gear of the-doublewheels `11 be1,ng correspondin with relation to' each other. I also preferably Vprovlde eachof the shafts 5 and 6 leach end, so that either shaft may be used reverslbly end for end -for the purpose nowv to be described. It will be noted that' the two gears 11 are of similar form, but that lthe reverse arrangement of their teethis due to theffact that one of the gears is reversed side for side with respect -to the other. Therefore, either gear lmay beused interchangeably with the other by simply turning 1t around. By alsomaking the shafts I5 an 6 reversible end for end, it Willbe apparent.

that a spare 'gear for each shaft may be thetop or the bottom, as may be necessary.

If the two pinion portions 13 and'14 were not reversed with respect to each other, it would be necessary to carry a spare shaft with a wheel loose thereon and assemble and key them 'after it was determined in lwhich *position they were to be placed. By the gly' reversed construction shown, however, the4 gear wheel' can be placed on' a spare. Shaft, ready for carried in stock and can be used either at I operation,4 and this shaft and gearcan be used either at top or bottom. It will also beobserved that by the reversed arrangef ment of the teeth of the two pinion portions tween the adjacent ends "of these two portions. This adds considerably to the strength and also enables the two pinions, as well as the two vcloser together. This is of advantagesince it vreduces the strain on between the pinions. What I claim isz' mills, comprising a gearhousing, overla ping toothed wheels 4secured upon sha tsn within said housing and adapted for driving l connection to the rolls, vand a drivin shaft having a pinion gear meshing w1th the toothed vwheels wit'hlnthe gear housing, said toothed Wheels 'having rinclined teeth nef scribed.

2. A- gear-driving mechanism for rolling mills,'-comprising a gear housing, overlappgn Ltoothed wheels rigidly secured to two -s a beingof the herring bone type andwith the teeth reversed. directly each other, the

shafts lbeing interchangeable and adapted gears 11, to be placed- 1'. A gear-driving mechanism for rolling versed in direction, substantially as cle- 18 and 14 -no clearance groove is needed bethe driving shaft mounted in said housing, said Wheels for connection to the rolls at either end, and

a pinion drive for said toothed Wheels, sub- .stantially as described.

3. A gear-driving mechanism for three- 5 high rolling mills, comprising a gear housing'having overlapping toothed Wheels se.

ing shaft Within the housing having a pinion With two portions reversed in direct1on and engaging said toothed Wheels, substantially as described. l5

In testimony whereof, I have hereunto set my hand.

JULIAN KENNEDY.

Witnesses J. W. KENNEDY, H. W. RANo.

Copies of this patent may be obtained for lve cents each, by addressing the Commissioner of atent. Washington, D. C."

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