US1109049A - Wear-compensating bearing. - Google Patents

Description

W. A. DUNN.

WEAR COMPENSATING BEARING. APPLICATION FILED 1 311.2, 1912. RENEWED r1111. 7, 1914.

1,109,049. Pa nted Sept. 1, 1914.

2 SHEETSSHEET l.

11111111111111WWWWWW HE NORRIS PETERS CO.. PHOTO-LITHO., WASHINGTON. D.

W. A. DUNN.

WEAR COMPENSATING BEARING.

APPLICATION FILED EEE.2. 1912. RENEWED FEB. 7, 1914.

1,109,049, 7 Patented Sept. 1, 1914.

2 SHEETS-SHEET 2.

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' ted lines. Fig. 4 is a plan view.

UNITED EE I WILLIAlYL A. DUNN, "or DULUTH,1VI'1'.NNESOTA,

MILLER, JR, or nULUTH, MINNESOTA.

i WEAR-COMENSATING"BEARING.

Specification of Letters Patent.

ssieivoit or oNn 'HALr To A; j

. Patented Sept.

Original application filed November 5, 1910, Serial N 0. 590,919 Divided and this application filed February 2, 1912,'Seria1 No. 674,934. Renewed February 7, 1914. SeriaLN 317,327.

To all whom it may concern: t I j Be it known that I, .lvILLlaM A. :DUNN, a citizen of the United States,residing'at Duluth, in the county of St. Louis and Stateof Minnesota, have invented certain new and useful Improvements in Wear Compens'ating Bearings, of which the. fol: lowing is a specification.

This invention relates *to' improvements 111 means for lmparting lateral'pressure to the outer surfaces of beams when passing through a mill, and particularly to the construction of the mounting of the vertical v I11 1nyco-pending application for patent,

serial No. 590,919, I have showni 'and de scribeda rolling milhwith which mypresent invention co6perates, and'from which this application is'divided;

The object of the invention is toprovide means for supporting a vertical roll adjacent the ends of the flange controlling or web reducing rolls, whereby the journal ofv the roll may be circumferentially adjusted to obtain a uniform bearing, and thereby] prolong thelife of the parts/1 *A' further object of theinvention is "to provide special means for vertically adjust;

ing the journal to take up wear. Another object of the invention is to provide means for cooling the bearing and" the vertical roll during the operation of the mill. v f My invention also aims l to provide improved means for supporting. the journal of. the vertical roll. I j. I

The invention also comprehends improve ments inthe specific details of construction and arrangement of parts, whichnwillg be hereinafter described, and pointed out in the claims. v 5 j I the drawings:Figure 1 is a vertical particularly elevation of the beari'ng and ducing rolls of the mill being shown in dot The numeral 1 indicates'upper before mentioned patent.

Mounted on a frame and extending there from is an auxiliary frame 4, formed with guideways '5; "Slidably mounted in the .guideways 5, is a bearing 6", of special con and lower web reducing rolls, such as disclosed in myl, the journal and the bearing,

the journals of the verticalroll are sup ported. r

The lower bearing section formed I abottom 9, an end wall 10, ,twoside Walls 11 .11, and

spaced from the opening and concentric g a well 15,"into which enteinvertical bolts 16. Ofnthe outer surfaces of the therewith is the guid'ewaysfi 5 in'the auxiliary frame 4.

The upper section. 8, comprises 1 a plate formed with a depending flange 18, above WlllCl l andextending above same is a'lateral ifiange19, and centrally of said, section and in'alinement with'the' opening 13, in sec-' tion {7 of the bearings for the end ofthe journal. The flangeQlS engagesthe inner surface of a flange 21,511" the lower section '7 while the flange 19, en, *ages' the upper surface of said lower section. I 5

' Spaced fromlthe opening 20, and ,concen trictherewithj is "a well or depression '24,

which; is: in vertical'alinement with the well 15, and. communicating therewith is" an opening 25, having a plug 26, whereby to afford means for introducing a, lubricant.

The upper sectionis bolted to thelower section as indicated at 27, to form a, rigid and. substantial structure wheirthe pa t are assembled? \y Mounted inffthe'bearings 13 and 20, is hollow journal 29, formed with a central enlarged portion 30, and two end nun,

into registry with the slot 20 fin the wall key ;35, is inserted to form a lock between journal is held -,sta;tionary. 1

is open at its inner end. Formed 1n the bottom is an opening 13, to

j. v is an'openi'ng -2O,haVinganotchQO Im the wall thereof. This openingforms one .The upper trunnion 31, is formed with a square opening 31?, to receive a tool, by means of which the journal may be rotated in its bearings. ,thej upper trunnion is formedwith a series of vertical; slots 32, which may; be, brought whereby the,

ice of the opening 20. Then one of these slots isfbrought into registry with the slot 205*, a

Fitting around the central enlarged I tion of'the journal is a'jtapered bushing '36,

keyed to'the journal as indicated at .37;

The bushingis in alinement with the Wells 1'5and 24,1'an'd'is supported on the vertical screws 16.

Mounted to rotate on the tapered bushing is a vertical roll 39, the upper and lower faces of which bear against the upper and lower sections of the bearing. This roll is free to rotate when frictionally engaged'byswiveled screw or screws 40, as fully set forth in my before mentioned patent.

In operation, the parts as assembled as described, and when a beam is passing through the mill, as shown in Fig. 1, the vertical roll is forced toward the web reducing rolls'and flattens the flange. The strain incident to this action is severe, and it is the purpose of this invention to distribute this strain throughout the entire structure.-

When the vertical roll is in contact with the beam, the outward thrust is against the walls of the 0penings'13 and 20, and because of the peculiar arrangement of parts, I am enabled to make the trunnions of substantial diameter to afford sufficient" frictional surface in the bearings to take the excessive thrust so that it will be properly distrib'{ uted." Hencethe strain at'the top comes on the top section .8, andbecause of the flange 18 it is transmittedto the upper part of thelower section. The strain at the lower trunnionis transmitted to the lower section 7, and-as both points of the greatest strain are on the opposite sides ofthe plane of the screw 40, obviouslythe thrust is centralized on said screws. r

In order to prevent the bushingwearing at one point, the key 35 is withdrawn, and a tool is inserted in the square opening 31 and the journal and bushingare rotated so as to bring another one of the slots '32, into registry with the slot 20 and then the key is again inserted. By this means, the entire peripheries of the bushing and the trunnions may at diflerent times be used, and thereby I am enabled" to prolong the life of these parts, and I am also enabled to maintain asmooth bearing for the roll 39.

' To compensate for the wear of the bushing, the latter is made tapering and is vertically adjusted by the screws 16. By turning the screws against the bottom of the bushing 36, the latter is forced up until the proper adjustment is secured; It is because .of'this 'adjustment and the fact that the bushing must be of; greater length than the 'enlargedpo'rtion of the journal, thatI have provided the wells l5 and 24, in the sections- 7 and 8; By this means, the roll 39 will at all times have a bearing from top to bottom.

Duringthe timethe millis in operation, water passes through a pipe 40, and thehollow journal, and flows through the opening over the top of the bearing and thevertical roll" and serves to cool the entire structure;

i 3.;In combination, a :almed openings, the walls of one of said This feature isquite essential, not only because of the heat fromthe beam, but because of the great friction between the parts,

which would in the absence of the'water,

heatthe face of the vertical roll and damage it. If the periphery of the roll is marred, it will produce a rough surface on the face ofv the flange of the beam, and it is my purpose, by the construction described, to

Water must be supplied to all the rolls,

not only to cool the parts but to wash the scales of the beam from said rolls when the mill is in operation.

What I claim is:

1. In combination, a frame, a hub having upper and lower shoulders and mounted in the frame, the shoulders engaging the inner surfaces of the frameand confined therebetweenja tapered bushing slidably mounted on the "hub, a spline between the hub and bushing, means for sliding the bushing upward lnclud ng ad ustlng devices on which said bushing is supported, the bushmg being normally seated on said devices by gravity, a rotary element mounted on the bushing and supported on the frame, means for permitting circumferential movement 'ofthe hub and bushing to take up wear of themtary element, and means at the top of the hub and the frame for locking the hub in position.

2. In combination, a frame comprising a sectionv having one end open and a cooperating section having a depending flange which engages the inner surfaces of the first mentioned section, the said sections having fallned openings, means for securing the sections together, a hub having a central bearing portion and provided at'its ends with reduced trunnions which fit in the openings -in-the sections,jthe shoulders adjacent the itrunnionsbearing against and being congfined between the upper and lower surfaces ofithe frame, a tapered bushing fitted over the central'bearing portion of the hub, a

rotatable element mounted on the bushing andconfined at its upper andlower ends between the sections, means for vertically adjusting the tapered bushing, and means cooperating with one of the trunnions for locking the hub in the frame.

frame formed with openings having a slot, a hub having a cen tral bearing portion and end trunnions, the

latter fitting in the alined openings, a bushing splined on the central bearing portion one of said trunnions having a slot adapted slots'tolock the hub in position and means fo-rvertically adjusting the bushing, and a rotatable element supported on the bushing.

4. 'In combination, a frame formed with alined openings, a hollow hub mounted in the openings and open at its upper end, 7 means between the hub and the bearing for locking said hub against rotation, a tapered bushing splined on the hub, means for ver- I tically adjusting and supporting the tapered lower section bushing, and a rotatable element freely rotatable on the tapered bushing '6. In combination, a frame comprising a provided with vertical flanges and open at one end, and formed with a circular well, a top section formed with flanges which fit in and over the upper edge of the lower section, said upper section having an opening and a well in alinement with the opening and well of the lower section, a hol low hub open at its upper endand'formed with a central bearing portion and end trunnions, the trunnions fitting in the-openings of the upper and lower sections, therebeing a series of slots formed between one of the trunnions and the walls of one of the openings, a key fitting in'the registering slots to lock the hub against rotation, a bushing splined on the central bearing portion of-the hub, said bushing being in alinement with the wells, and means for adjusting the tapered bushing.

7. In combination, a frame formed with alined openings, a hub having opposite end trunnions which fit in the almed openings, there being registering slots between one of the trunnions and the wall of one of the valined openings, a key fitting in the slots, a

tapered bushing slidably fitted on the hub, a spline between the taperedbushing and the journal, adjusting screws in the casing to engage with the tapered bushing to adjust the position of same onthe hub, said screws serving as a support for-the tapered bushing, the taperedbushing and the hub being rotatable when the key is removed, and a rotating element mounted on the, tapered bushing.

In testimony whereof I aflix my signature in presence of two witnesses; l

WILLIAM A. DUNN. VVitnessesr BENJAMIN ORNE, C. EDWARD STAFFORD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0,

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