US1763331A - Bushing-removing tool - Google Patents

Description

June 10, 1930. p, c, STEPHENSON 1,763,331

BUSHING REMOVING TOOL Filed Nov. 10, 1928 a patented one 10,1930

{My invention relatesto bushing removing tools of the: type adapted to remove bushings from anyfdevice with whichbnshings arensed; i a i s y a An object of my inventioiilis to provide of pulling the biishing or of drifting the bushingfromits hub- 5 further object is t0 provide such a bushingpuller which is capable of securingsuch a secure grip Ionthe interior of a bushingas to render it impossible forthe a grip to be loosened during drifting or pnllingoperations; A a r 11 a V a Morespecifically, my inyention embodies h 1100 f the typ Pmvid d with a threaded jaw ine nber adapted to be threaded into yazbnshing andprovides addition to the threaded jaw" means for of the jaw with the bushing .'Ete1 the tool has been threaded into the bushing.

m s men an cemliin iiloe i hei'a i us parts o f mydev ce, whereby the ob ects eont pl d e atta ed, es h e a ite 1 mer ings,ihwhich: a a Fig fl is aside iew offthe bushing r. em -V n en ageme t th th wi hes Q a pulley. f1; a "s a sectional View through the pulling bolt. I Fig. 3 is. a view gt a somewhat inodified for noftheste n. a a

Figd mew f ne 6 d 1' th busherm ie -i i a l T K is W 9 5 the her Of th r. a V i Ending ioversot thetype employing a a ei ler pi in 1 h w ada ed 9? b threaded nto bash ng t ews sin? 5 h lil n meet-he with means 0 i n h new pp y n pre re t th pulli g ol i as fie ne effli' ushing, are n t n w- It is not intention to claijni broadly such a deifice iHoweyenthere are objections to thi ty e 9f beshie'e emper i fef awe and illiistrated in the aecornp an.ying draw tool of this character which is capable steel. r r The pulling bolt is indicated generally tightening the engagement of the threads" by :thereference character and comprises I asleevel0and anose 11. The nose 11 is a With s and o h r ebi' s n i w, my-

nv nt n qon i s i l they ns u ti n,

ings so as mg; i n i v The threads 13 are of thetype haying one side substantially perpendicular to the axis ofthe bolt and the other side inclined ma set "fo th; pointed 10m in iny claims,

ing the bolt -as iini a 1 kev e i ieee vms we, 1

{"en i e wiijeMem 9 see; in mew which isthe faetthatqniteoftenduring the drlftlng operation, the pounding will iveaken the threaded connection between thebolt and the bushing the bolt often rotating under the vibrationofthe driftingrtuntil finally the bolt will be entirelydriven from the bushing. d

My invention remedies this objection by providing means for applying outward pressure to the threads ofthe bolt to securely lock the threads in engagement with the bushing after the bolt has"been threaded in place. "The bushing of an ordinary pnlley is indicated in the dralwings by the referenoe character 9; This bu'sjhing is ordi narily of bronze or Babbittor soinenietalwhich is soft enough to be ciit readily by split as at 12 to form several sections or i i l to be easily inserted "in a been from the baseof an gidjacent thread to form a sharp edge 14. In other words, the threads are" V shaped in cross section with one perpendicular face.

Theedg'esll, where they are intersected by "the lee 12, forin cutting teeth 1- peilits The slots 12serve the double purpose of foririi'ng thecutting teeth and also of lowing-theme members to be spread 5,1) it. a sleeve loegfjthp bolt iseXteiiorly threededat'li and iiiterioriy thre 17. The ufiper n d (if the"sIeeveis*fOflJid with 'a' sqi a'red oi" polyhedral head 18', to

Forspreadin g thefjaw members 11, I pro Videa conical wedge "19 and 'a' threaded stem 20, threaded meme "threads-I7 6f "the illeev iii ie iie ifii 84 e ev te T PATENTOFFIQE I PREsTdN c. smmesw, r We qmem e lemme Qr we-stews reen-TEL. em; BAB NAQW 9F slew; em law jew members,as indicated in Fig. lend is exteriorly threaded as at1 3.

eluding a pair of arms opposed to each other on opposite sides of the axis of the bolt.

In a bnshii'ig remover, a pulling bolt, having an integrallythreaded bore, a tapered hollow nose formed on the end of said bolt, and divided radially to form three separable jaws, a wedge positioned within said hollow nose, adapted to expand the jaws, and a threaded stein, threaded into the 1 threaded bore, provided with means to re J ceive awrench from which to receive rotative pressure, said tapered, hollow nosebeing e'xteriorly threaded with a thread, V- Y shaped in cross section, havinga face which j 1 is substantially perpendicular to'the axis J of the bolt and which faces toward the body of the bolt. a G. In a bushing remover, a pulling bolt 1 r having an internally threaded bore, a tapered, hollow nose formed on the end of said [bolt and divided radially to form a plurality of separablejaws, a wedge positioned within said hollow nose, adapted to expand the aws, a threaded stein threaded into the threaded bore, adapted to be rotated to transmit longitudinal pressure to the wedge, saidbolt being externally threaded, a wing nut having an integral arm projecting a l substantial distance laterally from the bolt, 30 said yoke including a pair of spaced arins positioned on opposite sides of the axis of the bolt and including a collar of substantial depth loosely receiving said bolt and r supporting it against lateral tilting mover35 inent, said yoke being adapted to be engaged by the Wing nut and in turn to engage a device in which a bushing is located.

Signed this 26thday of October, 1928, in the county of VVoodbury and State of inflowa.

PRESTON C. STEPHENSON.

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