US1010506A - Watch-glass grinder. - Google Patents

Description

E; ,R. MATTERS.

WATCH GLASS GRINDER.

APPLIGATION rum) MAR. 24V 1am RBNEWBD APR.29,1911.

1,010,506.. Patented Dec. 5, 1911.

nto r,

Attorneys opening ably inte against t eend of the .shaft 5 from movingl toward t e shaft.

vomi.

rATEN'r OFFICE.

#DNALBIJ RICHARD MATTERS, F HEOSH, MISSOURI, ASSIGNO Y0F ONE-HALF T0 JAY A. SEAGROVES, OF NEOSHQ MISSOURI. u

Wa'rorLoLass Gemona.

Specification of Letters Patent.

4indented Dec. 5, 1911.

Application tiled March 24, 1910, Serial No. 551,310. Renewed April 2B, 1911. erlal No. 824,146.

. The device lforming the suh`ect matter of this application is adapted to e mounted in a' jewelers lathe, to .be-employed for grindingwatch'glasses and the like. r

t is ythe object ofihis .invention to pro vide rotatably monntedgrinding elements' o novel vandimproved form; to provide a novel means for mounting the grinding elementsfor rotation; to provide a novel means for advancing oneof said grindingheads toward the other; and for vmaintaining the adjustable grinding head in the position to which it has been advanced.

'In the drawings, Figure 1 is a side eleva' tion; Fig. :2 is an end elevation; Fi 3 is 4a longitudinal section; Fig'. 4 is a detal ed pers estive of the cani shaft; Figs. and 6 are e evations of the grinding heads; and, Fig. fi'` is a section of the cam shaft 'on the line .Af-B of Fig. 4. i o The device4 includes, asa primaryand fundamental. element, va .'U sha )ed support-- ing member 1, the arms 2'. of which terminate in heads 3 and 4, these heads .having openin which are r'noun'ted for rotation, re-

fsectivly', a shaft 5 and ashaft .6.' The s aft 5 lis provided with a ooll-ar 7 preferally formed and adapted to bear. liead 3 to revent'the grinding head 8 is provided, `the saine having an outstanding shoulder 9, provided with a stud 10, adapted. to he threaded into an 14 in theA end of the shaft 5. 'The' collar ispositionedupon 'the shaftV 5 in such a Way that when the shoulderf) of the head 8 is rotated against the end :of the shaft 5, the shoulder 9 will not'be bound-against- .the ,end of the head 3. AA. grindng head 11 is provided, having an opening 955,111 whieh ray' be secured by threading or, otherwise, tn e'reduoed end 2 6 of the s hait. 6. This. shaft-6 vis slidably mounted v1x1-thez head andthe elements- 8 a'ndf 11 haveiupon their' .idjfacentsurfaeeg facings12pre i `'oiled from cork.,

,muy nel.

jsndsbiy moaned inflate ein .ag

1.3, provided at its outer end with a milled thumb piece 1 6. In th'einner end of the pin 15 there is aconcnved socket 1T, in which the rounded end 18 of the shaft/6 is adapted to rotate, The-pin- 15 has a longitudinally extended slot 19, terminating within the contour of the pin. A

Mounted 'transversely in the head 4 below the pinV l'is a shaft 20. This shaft 20 has a rounded transverse groove.l 21, adapted to 'thus the shoulder 2.4 upon the shaft 2() is engaged, lpreventin 4the shaft 20 from being accidental ly with' rawn, since, either the shoulder 24 0r the groove 21 of the shaft 20 are at all times in engagement with the pin 15. V

The shaft 20 has atY one end,.a radially disposedhandle'23.4 Itwill be seen` that this handle 23 is so positioned with respect to the groove 21 .that if the groove 211s to be so positioned with res ect tothe opening in the head i in which tlie pin 154 is mounted, that the pin 15 may be withdrawn, the han- .dle 23 must upstand above the horizontal,

in the position indicated in, dotted line in Fig. 1; whereupon 4the pin 15 may be withdrawn. As soon as the handle 23 is rotated vsin the direction Vof the arrow A, the shoulder 24 is first positioned to engage the pin 15, thus preventing the withdrawal of the shaft 20; and subsequently the cam face 22 ofthe Shift so is made mentes the gloria, thusg prevention the 'withdrawal ofthe pin 15.

1t. willgbe positioned withnespeot to-the face 22 that the handle acts avitationall'y to maintain thetsad face Wit in tlie contour of the slot 19' of the in'15, and .to oause` the cam face 22 tobin upon the' pin 15 within the contouriof the slot therein.. Thus, aslsoon as the handlev 23 is swim over in the direotion erertieal, thehandle 4.23 will act, byats .own weight, to bind the of .the arrow A, past Pin. 15411 rasa-@img Ingram am shaft so.

seen that' the handle so has been swung in the directionof the arrow A, to. a point about midway between the positions indicated 1 b the solid and dotted "une positions of tile handle 23 in Fig. 1. The heads 8 and 1'1 may readily be removed from their respective shafts, 5' and 6. when it. is desired to remove the cork facings 121x) renew lthe same.'

In rac-tical operation the end of the shaft 5 which is'sp'ecilcally denoted by the numerel 27 in Fig. 3, is inserted .into the chuck of a lathe, rotatingthe' grinding head 8. The pin 15 may be slid int-he head-4 to advance the grinding headll so that the cor-lr facings 12 may bear."I against the Watch glass which is to he ground, vthe pin 15 being readily located i'n'a fixed position by manipulating the handle 23. V I 4 'While the4 grindin head 8V is being rotated as above descrioed, the article Iwhich is being polished, -rnay be held, between the grinding heads, and'against movement, by thelhand of the operator, o r :the article may be held in a suitable tool, or inl any other lf desired, the Ushaped support.- ing member 1 may also besteadied by one hand of the operator.

Having'thus described the invention what is` claimed isz-- y y 1. A device of the class described coni4 prisingl spaced arms; axially alined shaft-s rotatably mounted in the arms transversely of the same, one of the'4 shaftsbeini slidably mou'nted; grinding heads upon t e ad '.acent ends of the shafts ,means for adranc ,mg thesli-dably mounted shaft; and a deviceo eratinggravitationall tofbear against the a vancing means, toloc' the same.

2. A device ofthe class- 4described com-V prisin spacedsarrns; axially alined shafts f rotate ly mounted inthe arms transvereely4 of thesame, one of the shafts beingslidably f mounted; grindingheadsiupn Vthe adjacent. ends of the' shafts .af'pin slidably mounted in one of said" arms and ai'rangedfto bear4 4 Vagainst the 4slidablyjmvoxllnteui;shaft; anda' f oammounted in the last'named arm ,and

arranged to bear against the dpin. l )A Ydevice of the class escribed corow prising a supporting member having spaced.

ing heads upon the adjacent 4ends 'o f shafts; a pin slidably mounted cuoio said 'arms' and arranged tofbearfa 'einst :the

i slidably mounted ,'shaft, Vthe pin v, 'avingfalon itudii'iallyslot'` #terminating versely mounted inthe-last named 'ai1nand'- `Wit inthe contour of thepinggfa-she-ft trai-isf ,the pin within the4 contourl o'f 'th'e slot, ythe shaft'A being transversely v'groovc'fedV Yto .provide for the passagethe pin into-itel Support-H slidably I noulited insaid arm and arranged to bear4 againstl the shaft, thepin haring'a' f longitudinally 'disposed slot terminating 'within the contour ofthe pin; a shaft 'trans Yerselyniounted in said arm andhavmg'v a cani face arranged 'to bear against'thepin l within the contour of the' slijt, fthe shaft being transversely` groored to. proridefor' the passage of the pin into its supper-tin arm;

` .the a last named. shaft having-a -rs'a'ldial andle A operating gravitationally to (maintain the ce rn `:v ithin-tl1e slot and in bearing upon the; pin :ya grindingfhead,upon-the first named.

shaft' and a coperatingrindin head :snpf ported fmf` roeden i a, amc-1j adaptedy to receive driving n lleans..V

A 4In testimony that. V1"., claim as :my own, I have vhereto adix'd'fniy signa-- ture intl-ie presence of -twowfv'i'tnessesf lEnWalen larcnann-rmfrrses.; .Witesses 'W4' iC-F.RICJIS;..v

vLuminece Termen;

the foregoing;

eretefand

Images