US1207174A - Mill-liner. - Google Patents

Description

if, E, J'OHNSON.

IvHLL UNER.

APPMCMION FILED MAY 2,7. |916.

/ MTOH/HIEVJ.

Patented Dec. 5, l19165.

l@ u are t le lie Application filed Mey 2'?, 193.6.

2b ZH whom t may concern: f

Be itv known that l, FRANK E. Qlonutsou, a citizen ot' the United States, and e resident of Salt Lelie City? in the county et Salt Lake and Stelle of Utah, have made and invented certain. new sind useful improvements in ll/iilllliners, of which the follow ing is e speciiicetien.

lli/ly invention relates to liners 'for tube, ball, and other types elf mills, and particulerly to that class of liners composed et de` taclialole lining nletee and sectional lifting' here,

lin practice, enel especially in mille Where lerge balls orpehhlee ere need, it has been- 'tonnd that the eeeceding action causes Wear upon the reer surface ottheliif'ting here, es well, ee upon the liront sides thereof, end elsel that the lifting bars are subject te terererd5 es Well ae reerweicd, thrusts, due to this cascading action.

is therefore en object oil the present invention to provide e liner wherein the weer sections of the lifting bars entend over both sides of the baeeeectione end coperate with the lining-plates., so ee to successfully Witlietandeither forward or rearward thrusts and completely protect both sides oi the lease or filler section from weer.

A further object ie to provide e liner which is eo constructed. that the mill can he reteted in either direction, and with ythe weer sections et the lifting hars 'so designed that they may he reversed.

l further object is to provide a mill liner poeeeseingtlie above-mentioned characteristics, in which the lining plates can stretch or elongate, Without danger or likelihood et bursting the mill shell l further object is to provide e mill liner in which the Wearing sections et the lifting here may be easily removed or replaced, end,

when securely locked in position, aid in holding the lining platee in place.

@ther objects and advantages will appear as the deecription proceeds, wherein it is to be understood that changes" in the precise embodiment of the invention can be made -Within the scope et Whatis claimed Without departing from the .spirit thereof. f

yll`he preferred embodiment of my invention is disclosed in the accompanying drawinge, wherein.:

Figuiere l is e view in vertical eectiom ot e porion ci a mill equipped with my ii proved liner.; F 2 is e detailed. view in perepective of one ol the lining plates; 3 is a detailed view in perspective of the hase or filler section of the lifting hare; lti Ll is a` detailed view in perspective ci' the tot) Wear section of a lii'ting har.; lli 5 ie a vieu' in section of a liner7 wherein the top weer section ci" each lifting engages hut one of the adjacent lining1 plates; llig. 6 ie a detail view in section, of a liner which. is so constructed that the wear section of the litting bar is held iii place along; one et ge by one of the adjacent liningn plat Fig. 5.7 e fragmented view in Section et e liner 'Wherein the edgee of the lining" plates project up.y and forni a contil'unubimici ti e eifiee oi lthe weer sections of the lifting; bare is e fragniental view in vertical section et a liner wherein the sidee of the Wear sections of the liftinghars extend between the edges of the adjacent lining plates; l? 9 is a view in .section of a mill liner similer to that illustrated in ig. il, the filler har7 in the preeent instance, being; et tregezoidal con! tour or outline. 1

Referring specifically to the several viewe, the mill liner is formed with the detach-allie lining platee l0, the edges ll el -which thicken to forni the ribs 15.2.. ,interposed he tween the lining?,` platee, are the sectional lifting bars 13, which latter, ae the mill ie rotated, cause the contente cascade and Aproducethe required grinding; and pulven ming action Eachdifting har ie formed with heee or 'illerisection il: havingy beveled sides l5. El top Ywear Section l@ preferably formed of some hard weareresisting metal, such ae manganese steel, superposed upon the heee section, and is formed with inclined sides i7, contacting and embracing both beveled sides of the hase section. rlhe hase and tep Sections ofthe lifting bare are provided with registeril'ig),` openings 1S, through which ein tend suitable bolts or other securingr nie-ens 19, resulting in the rigid securei'nent of the lifting' bars in place, and at the same time allowing them to he easily removed end the top or wear sections reverseclfor replaced, as may he necessiti-y,

rlille sides et the top or Wear eecti u the lifting hare extend flown to. eno

tect with, the Aloeveied eurtacee or 'new .lll

il, whichnre ilorined`et the" edges of the liniii.g`pletes,end accordingly :iid in holding the lining plat-es in place. .The lining plates, 'while extending into close proximity to the buses ci 'the .lifting bers, stop short thereof, and" accordingly allow the lining plates to elongate or expend without subjecting the mill shell to severe bursting strains. ldhile the holding action of the lifting bars may alone be `relied upon to secure the lini g plates l0 in place, l have illustrated the lining plates Iund the mill shell :is being provided with openings 2l, through which errn tend suitable holding bolts 20, although the presence of these openings and the .use of these bolts muy be omitted if desired.

The liner disclosed in F ig. 5 is formed with the lining nietes 22, und the sectional lifting bers 2i. rEhe base section 24 of euch lifting bar receives e weer section 25 thereon, the lutter being ci' somewhat irregular shape and including the overhanging sides 26H27, which embrace the sides oi the base section therebetween. rlhe rear side Q6 of the weer section projects outwardly and downwardly, und bears upon the toe end 28 of the adjacent lining plate, while the front side :22 of the weer section projects between the heel end 29 of the adjacent lining plute lend the bese section 2li of the lifting bnr. Although this type of weer section may not be reversed, the mill muy be operated in either direction, as the sides oi the weer section completely protect both sides of the base section. 'l he bese section is accordingly protected ege-.inst the direct thrusts und weer resulting from lifting the contents of the mill as the letter is rotated, and from the indirect action resulting from the cascading of themill contents us it strikes against the opposite or rear side ci the lifting bar.

In some instances, it desirable that the liningl pieles cooperate to hold the lifting bars in "ece, and with this in View lr. provide :i se disclosed in Fig. 6, wherein the mili 30 ci euch lining plate is provided u ith on orerhunging ledge 3l, beneath which projects e iinnge 32, carried by the' one side ci one weer section 31 of the lifting bnr 3l-^ rl. base or liller section receives this top or y'eer section. thereon. The toe end oi the adjacent lining plete is enlarged to form :i rib d6, between which, and the bose section the remote side oi the weer section projects.

`The .mod ed orinsoi mill liners illus treted in i', 8 and il, are used. where it is not essential that the lining plates and lifting bers coperuize to prevent their mutuel inwerd displacement. The form dis closed in Mg. 7 hes lling plates provided et their ed i areused and bevel-ed ribs Lil, th s iornnng e continuation of the o neces of the wear "life sides i3 or 'weer section 62 are correspondingly bevmomes Isubstantially rectangular in cross-section,-

and the sides 51 of the reversible weer Section 52 project nearly to the outer wall of, the base section und extend between the said" buse section and the adjacent edges of the lining plates A similar modification is illustrated in Fig. 9, wherein the base or filler section 60 is substantially trapezoidal in cross-section, and the sides (il of the top eled.

In euch of the various forms of liners above described, suitable bolts (not shown), similar to the bolts 19 illustrated in Fig. 1, are employed and extend through registering openings (not shown) in the weer und base sections of the lifting hars, :ind are secured to the mill shell, so as to hold 'the lifting bars rigidly in place, and ut the same time allow them to be readily removed o1` reversed :is muy be desired.

What I claim is 1 A. liner comprising lining plates, lifting bars interposed therebetween, seid lift ing bars 'formed with base sections and with 100 weer sections, said lining plates and lifting bars completely housing seid base sections.

2, A mill liner comprising lining plates, lifting hers interposed therebetween, `said' lifting bars formed with base sections spaced from the edges of the adjacent lining plates, and wear sections, mounted upon said base sections, secured thereto und projecting to opposite sides thereof.

3. A mill liner comprising lining plates, lifting bui-s interposed therebetween, said lifting bars formed with buse sections with beveled outer edges, and weer sections with inclined sides mounted upon said buse sections, extending down to, und contacting with, the adjacent lining plates und means for holding said bers in place.

el. A mill liner consisting of lining plates, lifting bers interposed therebetween und formed with bese sections, and weer sections detuclmbly mounted thereon und provided with spaced walls receiving the Suid base sections therebetween, und means for securing said lining plzites und lifting bars in place.

A millA liner comprising lining plates, lifting bers interposed therebetween, suid ng bers consisting of buse sections, wear sections mounted upon snid buse sections and projecting thereabove, seid weer sections 130 roirided with spaced sides projecting 'to oth sides of said base sect ions and embrac 5 allow the mill to be operat ed in both direc- 4tions, and means for anchoring said lining Vplates sind lifting bars in place.

bSigned at Chicago in the county of Cook and State of Illn A. D. 1916.V

ois this 24th day of May,

FRANK E. JoHNsoN.

NELLIE C. BAsoN, EARLA. LEINER.

Witnesses

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