US1070816A - Micrometer-calipers. - Google Patents

Description

BEST AVAILABLE COPY M. KUNIK. MICROMETER CALIPERS.

APPLICATION FILED MAR. 4, 1912.

Patented Aug. 19, 1913.

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l reference to tion by eft'ented ling. i9, 19153,

applicationle Mariela l., E912. Serial No. Sb.

To Q53 whom may condena:

Be it known that, MICHAEL BLUME, a eitizenof the United States, and a resident of the city or" Caio-ago, county of Cook, and State oi illinois, invented cert-ain new and useful improvements in Micrometen Apers, of which the following is a 'specilviy inventionlrelates 'to improvements in calipers and more speciically tothat class thereof eliaracterized because of the adaptability thereof for mieroinetrio adjustment.

'ihe object of iny invention is the production of a caliper of the char-acte;` inentioned which he readily and quickly 1' ftd to `nearly the proper dimensions ad tien as easilyr and expeditiously' adjusts-dto the exaot measurement.

r further object is the production of a Caliper as mentioned which will he of dura hle and economical construction and eiiicient in i 1 @ti er oojeets will a pear hereinafter.

The invention consists in the combina.- tions and arrange ents of parte hereinafter described claimed.

My invent-ion Wili ne heetunderstood by the accompanying dranf'ing forming-a part of this specification, and in which is side elevation of a micrometex caliper embodying my invention7 Fir? 2 is a vertical central longitudinal section thereof, portions however being sho 7n in elevation, Fig. 3 is a slightly enlarged detail section tellen on line 3--3 of Fig. l, and i is a sectional detail of the outer'end portion 0:5 the caliper steelt.

The "peoried forni of iny construct-ion as ilhistrated in the dra-Wing comprises a tubular stock #eonsisting of the tubular portiene i and f2, the adjacent ends of the memb rs l and 2I being telesco' ed and preferably secured rigidly together y shrinking. Secured rigidly upon one end of the stock or upon the outer endof the member l is the fixed jaw E which is of ordinary design. Surrounding the outer end portion of the member 2 is a sleeve Li' which is tightly fitted thereon, the saine being held in posi friction. Provided upon one side of the outer suace of the sleeve et is a c ries'oi gadnations 5, divided according to any standard desired, es inches, the numbered gradnations being tenths of inches vneetion 11i and the and the smal-ler divisions fort-ieths. Provided at one end of the sleeve i is a porteration 6 which aords means for engagement by a circular wrench for effecting rotary adjustment of said sleeve in order to properly position the longitudinal graduation with respect to graduations on the barrel as will be presently described. The barrel just referred to is shown at Y, the saine being slidahly and rotatably mounted upon the sleeve d. @ne end ot said barrel is cireunferentially graduated, the graduations 8 being arranged for cooperation with the lonzitudinai graduation upon said sleeve 4, the adjacent terminal edge of said barrel tions 5 .in the manner Well known. The oir`- onniferenee of barrel 7 may oedivided into any number of sections, that is the graduations 8 he any desired distance apart, said circui'nierenee being however divided preferably into twenty-live notions in order that measurements in thefthonsandths or an inch may be made as set forth hereinafter. The opposite end of the barrel 7 is 'preferably knurled shown in onder to 'aciiitate rotation thereof oy the fingers. Said end oi said barrel is provided internally with a tapering seat 9 for the reception of the oor.-

respondingly formed end l@ o1" a screw ll arranged eo-axial with said harel. The screw il engages the adjacent end portion of the stock member 2 which is internally screw threaded to receive the same, the outer end oit' 'said screw being provided with a cylindrical extension l2l 'which'slidably cn-' gages the opening through the members l Q .in order to maintain said screw in proper axial position in the stock. E he internally threaded end of the member 2 is also split longitudinally and the outer sur-, face. thereof is ta Jering in forni and screw' threaded. Threaded upon said tapered poi"- tion is a collar 13 through the medium of Whieh said end o said block member 2 .may be Contracted in order to .take up Wear lupon the internal thread of said block member or upon the threads of the screw 11. Said screw il is securely locked to the barrel 't' through the medium ofthe threaded con.` cap l5 so thatrotation of said barrel will ei'i'eot corresponding movement of said screw and honte longitudinal feeding of Said barrel, By reason of the peealiar conoeation letween *the cooperating with the transverse' graduaf,

,El I

@Swed ahh? moan m :y hour" Outs fue @med

venas foi? recesses'i-n its mounting mei'nber -adaptedfto';l

receivefsai'd' inner as described.V

jaws adapted snugly, substantially l 2,' 11i-. Quipergfthe 'combinaties' fof! twov to measure inside Aand outside i-dmensions; a screw 'arrangedta feedsaid jtowardand away from eachv other, one

l, of said jawsbeingadjustably mounted-with ?res'pect 'to said screw; A l0 uring the feed. of said Jaws andlfaplurality.

{of sets of means forf'accurately positioning aduationsfor 'meassaid adjustable jaws'iun two dierent p dsiti ns with respect tosaid screw, .whereby i vsaidgraduation's will read for both inside and outside' dimension-scf 'said jaws, substantially as described.

jaws adaptedvto measure inside and outside 20l' j'aws toward and away fr OIh "each Other,

dimensions; a 'screw arranged to feed said neof said jaws'being adjustably mounted with respect tosaid screw.; :graduations for measuring tlie feed of` saidj'aws; aplur'ality of sets o ,25

inneren'dand'fa plurality off pairsbfre# receive said 'as described.

l means vvfor accurately 1ipositioning; said adjustable jaws'i'n two di erent Aposi. tions with respect lto said. screW, whereby said 'graduations will read for both` inside A and outside dimensions of saic' l javvs,LA said means comprising a set screw carried by said adjustable jaw and plovidedjw'ith a' conical casses in -its mountin member adapted to" 4.1111 'a caliper, the combination ofla tubular-stock; a fixed jaw carriedby' one .withan 'internal screw' thread ai circumfer-A itatably-mounted upon'v said stock;a1screw Lsaid barrel-and I connected for n iovement 'with f helatter; a barA fixed it one eindvto said fixed jaw'and having its re'efend telescoping said tube; a Tj aw mounted for slidy screw, said recesses being arranged inppairs,

ed for engagementby said'set'screw to position said movable jaw relatively to. said' gra'duations lfor 'insidev caliperirigg,v and the bther of saidrecesses'being adapted for armovablejja'w relatively 'by said -graduations forl -outside .lcal'peringg substantially as fie; 'SCIlbedL :of two-.subscribing Witnesses.

Witnesses- 3. l

' JQHNFLORIAN entially graduated barrel slidablyand 1' o' able Vadju'st ment'non` said tube; anda.- set j screw for securingfsaid jaw in `positions-of adju'stm'ent,4 there being recesses in one side. oflsaid tube for engagement by said set' one recess o f each of said pairs-being adaptasA l endof said stock, lsaid stock bein-g provided A.

connected with saidgbarrel and engaging said internaLscreWgthreadef said-stockya tube extending parallel with said stock' and MICHAEL KUNIK;

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