US1251114A - Glass-grinding machine. - Google Patents

Description

E. A. RYON. mss GRINDING MACHINE.

APPLICATION FlLED SEPT.2. 1914.

Pateted 1160.251917.

`a 'shears-SHEET 1.

E. A. RYON.

GLASS GRINDING MACHINE.

APPLICAIIDN FILED SEPT. 2. 191.4. Y

Pate-latedA Dee. 25, 1917.

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ri'rnfrnn isf-raras retrasar orari-air@ EDWARD A. B YON, F EVELLSBORO, PENNSYLVANIA,'ASSIGNOE T0 WELLSBOROG-LASS 'C01`1'LPNY, 01E' WILMINGTON, DELAWARE, A. CORPORATION GF DELA'WARE.

eLAss-enmnme Interwatts.

Spcification of Letters Patent.

Patented Deo. 25, 191'?.

Application led September B, 1914. Serial No. 859,763.

To all whom it may concernl Be it lrnown that l, EDWARD A. Bros, a citizen of 'the United States of America and a resident or' l/Vellsboro, county of riioga, and State of Pennsylvania, have invented certain nea7 and useful improvements in GlassGrinding Machines, of which the fol;

lowing is a speoication, reference being' had to the accompanying drawings, 'foi-nr ing a part thereof.

My 'invention relates to the art of cutting or lsrriniiling glass tumbler-s, bowls and' the like for the purpose of decorating them to enhance their beauty and increase theirvalue.

One object oli my invention'to to provide a machine for' the general purpose above indicated which shall he adapted to automatically out a predetermined design upon the outer surface of tumblcrs, and other glass articles, that shall be simple and durable in construction and reliable in operation.

Another object is to provide in a machine' of the aioresaie character, ni'eans for maintaining a suitable cutting Wheel suriace.l together with means for adjusting the work to correspond at Iall times tothe size of the wheel thereby insuring' uniformity in cul'sand regularity in design.

lt is furthermore my purpose to provide a rigid but readily releasable Support for the glass article subjected to the grinding' process, an accurate and replaceable member for determining; the design to he out, means for automatically stopping` tlic'i'nacl'iine when the design is completed on the glass article, and means for carefully determining the depth of each cnt or' the Wheel irrespective of irregularities in the surface of the glass.

Other objects and advantages of my invent-ion Will loo set forth hereinafter, and in order that my invention may be thoroughly understood l will now p'igoimed to describe the saine in the following' specifieationand then point eut the novel features thereof in appended claims;v

Referring to the drawings*A Figure l is a* sideelevation of al glass grinding machine coi'istrnoted in accordance with and elnlomlyine'l my" invention.

Fig. 2 is an elevation Corresponding to Fig. l an looking at the n'iachine in the opposits directionl Wi the liaise bri'dwn4 away just-ine; mechanism Within.

readily he turned.

and shown in` section to disclose the adshown indiig.

Fig. 4 is a partial side elevation drawn to a larger scale'and showing; the tumbler support and its coperating parts in detail.

5 is an end elevation with the drirA ing shaft and the base shown in section.

Fig. G is a sectional elevation taken on the line 6 6 of Fig. 3. f

Figs. and 8 are plan-views taken 'respectively on the lines 7-,-7 and 3--55 oit' Fig. il.

Fig'. 9 is a View ot a modilied arrangement which also embodies my invention but is arranged to increase the Speed of opera- Io tion of the deviceT by moving the glass at a# more rapid rate when it is being.,y adlinsted from one position to another between cuts.

Figs. l0, il and l2 are elevations of cuty glass tumhlers which are intended to illus 7 trate the possibilities of the machine in the previous figures.

Like characters of reference designate con responding parts in all the figures.

Referring to Figs. l to 8 inelnsiieof the drawings, the machine here shown coinprises, in general7 a base l5. a grinding wheel a facing tool 3(`/, a head stock ft() a carrier 110, and suitable driving and in- Base.

The base 15 comprises a' hollow plate or casting having a recess 'U3 through 1which extends longitudinally an adjnstinnscrew ll This screw 'is rotatiiely supported at its respective ends b v the base plate and at one end extends-through the base flange and has a knnrled-hcad 1S by which it may At the siuur end oi 'the screw is mounted a. micronioer scale 19, which cooperates with stationarj,v index gli on the base,L so that the screw may be set with great accniacy. Near its respective ends it is provided with twosecti'ons having oppositel'y cut screw threads, one beingl a lefthand thread and the ohei'a riglit'haud base are lin-oe. sets o the head s 'l' 'l g 'eel 30 being' 11i-Quilted in lhe guide Grinding," zii/E663.

The grinding Wheel 25 is -retitively mented in a paire'f spaced bearing blocks 2-27 which are belted er otherwise seeuzed lo the hase. The 'Whee iS secured 'i0 'a shafi ei" who? which is provided With a iving pulley The Wheel may he 'drlven by il eelt (not shown) er by any' ehe' suilnhle means. and is intended ie f3 eralie eentinijzeusly while he machine io' in use.

Facing i002.

"d" lool comprises .-1 pest 3l wl ich. 1S :i lounted m lhe guidevi'a'vvs 253 :i1-5 we' uref e 1t ils upper end im a n l emfiier il?) pivotiilly siip'ieiied which imrld f5 i and )Ell i support l `j ly imm lhe f au zii'liusiixjg fie-Yew 3l, willy emmeel'ed lo the outer end of il e suppe t 33, the alinngement el' pars hein!y .uirh tlml. lijf lmning the adie 'f meV he guides fl-iid,

1nd le i5.

i the Sp :i l? having mi nwlihes #n um lill" ally pi'cijffi'liiig im il). t ,eiii'ed u llie OU' 1' edge Hi' lie wel) :i finde lnluel: .Uli in which :i lfal'lh plale :il arranged l'o'slifie vertically und is ndeaplml to engage mie o'l the. nelehes lS iff the lisl :uid held ihe spindle 45 10 whilh 'he :ilis'h is secured against luming until i'he latch plzilie is; i'eleased.. The guide lilvelf :")Qis ')i'ovided with a slof; 52 thi-@ugh whieh :L pin 53 exl'eiids. This pin is niiixed lo the lzich pluie :mil is embraced beyond die guide iilec; by lm biful'cfd end 54 el" the hell eifziiili lever tending ,l 'port :i mh chine. Z"

P Se med ne ossei; 59 :md 60 1s plies with Woifm :1, Worm g1 Wheel 6l.

The edm 5S iS seemed te and may ferm a part el? the Worm fear Wheel GflfF and is secured le e shaft 35 which extends ilu-eugh the web and is rotatively suppoifed thereby. Adjacent lo 'the cum and secured to the same shaft 65 is a pawl 66 which, under predetermined conditions, is engaged lily a. stopping arm 6i remtively ninnuied en ai shaft 68. Secured le the ,'"hzi'ft 68 ndjaeed 40 lie arm 67 is a disk having :i piu prf jeegien 70. The zum 67 normally reels against n, sfmiionm'y p l aised inte locking ieilileyx Vfl h the dish 9 fles refilled and the girl T advanced lie such pesitiee as lio lift the ferm.

r'he shaft (i8 extends Liu-engl; fie web und e Seemed te il: new? its aigpegilie end, :i zztehet Wheel 72 wltdeh prevenlieifl from burning; except in one dii'eeieiil by meuh# 0f :i Springqieed pewl 75%, The i'zitehel. adifmleed by :m vf 'l wliielAV mounted m the shaft (Se r'ifflfzzeer t to he ratchet wheel and Carries Secured lo Jhawel) a guide bleek TG in "4"? arial'lged le Slide. The movemem of i'he 12d in one diieeliien limited h5* n sie i 7S, and lhe miler end of' the rod en; 1 b f ,wl mC lille arm T4- 'which is'held :nel me', insuring' T9. As mere :fully peizied eut heifeiniifeig the red 77 is actuated in :le :mee he ratchet wheel one@ for euch nwehnlon m ille eariier 110.

@n the oppilsiiie side of the web from h Wl'ieel (3l und. `seemed $0 the Shzilf' G5 i :1 enm- 80, lie peripheral Suifnee @if which ia engaged by a roller Sl fm'mmge pai't ef a paw] S2. This prv-.vl '1S pivotally mounl'ed en :1 stud e1 hell. i web, and has im iufm Whieh iS secured ie lille Ll-1L ivre-filled will; toeh projections 55. :fzpiiidle l5 has im e11- lzirgenlenii SG Whieh iS pmvililed WilliA linnnlfil grooves S7 le efiiiiilei'ile wiii the tenh liiel'ieetion S5 el" ille Y wl S2, the arrangement being Such limi' the pzwvl nieves the spindle axial without interfering' with its relation.. l

The heli e 'link level' 2. has L substantially vertical :um to which u, puh' el' step lingers 5)() are lweeiired. 'These lingers are suhsaxnfinlly p: z': llel A and one mi euch Side el the grinding wheel E45', lining benl, ai, ll le :Ang gv the eiiww mi lli; lespeetive sides el' lim um, lime' may be llo.

:mi el minted mit lhey 13G 95. tially vertical hole, in the guide block 50' anemie is binrcated at enter end to receive a,

pin 93, projecting from a hub or enlargement 94 near tbe lower end of a vertical rod This roo extends through ,a substanand is normally pressed downwardly by a spring 96 until a collar 97 on the rod engages the top of the guide block.

`When the spindle and glass are advanced the bell crank lever is tilted slightly by the action of the glass upon the fingers 90 and then the rod 95 is moved upwardly' in opposition to the spring 96 and stops the macliine. Connected to tbe rod at its upper end by a pair of curved links 98 is Wedge or cani block 90 which is adapted to slide vertically7 in stationary guide block 100.

The links bent to avoid interfering.

with the spindle 425 'which extends between ilicxn f e one et the pins 219 of cyprevent further adindie. d 101 is rotatively on and c ends laterally from tbe vacio lt. is located below tbe bifurcated bearing and a *.voiln gear 102 tvliicli is secured to the spindle and is interposed between 'the par-'ts of tile bearing. A Worm gear is secured to the stud 101 and meshes with the gear 102. v

mounted There is also secured to tlie stud adjacent to tbe g ar a ratchet Wheel 104. A pavvlhaving the form of a bell crank r mounted on the stud 101 @be carrier itsellf' is actu# on 108 trom the cam 80 lie-ld in engagement by a 'lbe arrangement of parts is l as tbe" shaft and the cam 80 the pan'l lcarrier 105 will be nated once in eacb revolution `and will vence tbe ratchet xvlieel 104 and the gear t i step by step These movements of tbe Wheel 103 produce corresponding movements oi tbe Wheel 102 and tlie spindle e. 'The rotation of the spindle is 'thereby produced "ill'ie caro. 80 furthermore, and as already explained, actnates the pawl 82 to move the spindle axially forward and backward The cow/5er.

The carrierf110 comprises an .1 -shaped Wedge block or cam 90 which is rotatively mounted in the horizontal arm of the support, a clutch mechanism for gripping the interior Walls of' a tumbler, and a guide 113, y

` Afiixed to the vertical shaft 112' and below the bearing, provided by the support, is a ratchet wheel 11st, (see Fig. 7)' which is adapted to be engaged by a spring-pressed pavvl 115. A pawl carrier 116 is rotatively mounted on the shaft 112 adjacent to the ratchet Wheel and has an odset projection 117 in which the pa-Wl is supported. The carrier 116 has a laterally projecting-arm 118 which is advanced between a pair of limiting stops 119 during each rotative movement of the support about the spindle as an axis, the head stock being provided Witli a stationary projection 120 having a cam surface 121.

Directly above the bearing of the vertical shaft 112 is a notched disk or Wheel 122 which is engaged by a paw/l 128 to determine each of the cutting positions of the glass. The pawl is pressed into engagement with the notched periphery of the. disk by a spring and is released from the disk in opposition to tbe torce of the spring by the cam surface 125 of a projection 126. The pawl is also tripped once for each rotation of the support about the spindle as an axis.A Above the disk 122ivhich is removable and may be replaced by disks liaving different arrangements of notches, is the clamping mechanism which is capable of being eX- panded to firmly grip tlie interior-Walls of sections together. The section 127a has a hollow boss 130 through which a resilient key 131 extends so as to engage one of a series of recesses or depressions 132 in .tlie vertical shaft 112. By this meansthe seo tion 12Ta is removably secured' to tbe shaftA and the liub section 127 thereon;

The shaft 112 is hollow and a. rod 133 extends tliroagli it. The rod near its upper end is provided with a .transverse pin 1314 sliaft and is aiited to tbe 'hub 127, The slot is of suliicient length topermit a limited isa-mounted to slide' axial movement of the hub on thejshanft;A

Secured to tbe sliai't 112 near its upper en'd is 'a circnlar clamping plate 136 which is preferably provided with al gasket or Washer 137 of rubber' or other yieldi'ne material,l il. helical spring 138 surroundsl thev upper end; ofthe shaft 112, being'interposed 'which extends through a slot 135 inthe between the clamping plate 136 and the body ot the. hub 127. 1t therefore tends to press the hub sections 12T-12Ta together. The hub section 127a .is provided Vwith a flange 139 to which are loosely attached a plurality of sectors 140 which have conically curved inner surfaces to cooperate with the truste-conical outer surface of the body of the hub 127. IThe arrangement of parts is such that the sectors 140 are pressed outwardly by the action of the springs 129 and the spring 138. Their outer surfaces are curved to conform to the interior surface of a tumbler or other article to be cut.

he springs 129 are relatively light and consequently it is only necessary to press upwardly on the rod 133 in order to separate the hub sections 12?*1271 sectors or wedge blocks 140.

In order to still further insure that a tumbler cannot accidentally be removed from the carrier, a bloclr let-1 which is pivotally secured to the guide arm 113 is pressed against the bottom of the tumbler by means ot a spring M2, the arm being pivotally mounted at 1li-3 near the upper end oi the L-shaped support 111.

Before describing` the moditied structure shown in Fig. 8 or discussing the designs illustrated forth the opeiation of the machine. Assuming that the carrier occupils the position substantially as shown in Fig. #l otl the drawings,cxcept that no tumbler or glass article is in place, a rod 111- which may be comic-gtn ed with av loot press orothersnitable device, is for ed upwardly to engave the lower crd of the rod 13B. As already explained` when this rod is forced upwardly relative vto the shaft 112, the clamping` mechanisn'i is released hy the separation ot the hub sections lift-1278; lt, now, the guide arm 113 is swung out of the way on its pi vot 1&3, the tumbler m L e forced downwardly onto the carrier until the disk 136 is pressed closely into it. The rod 133 will then be released and thereupon the springs 138 and 129, draw the hub sections together and force the sectors 140 in position to clamp the interior surface of the tumbler. The guide arm 113 is then placed in position as shown in Fig. so that the spring 2 draws they pressure block 1411 against the bottom ot' the tumbler.

The grinding process may now .be commenced by starting; the rotation ot the driving shaft (il. This rotative movement is transmitted through the fears tSIi and (il to the cam 58 and the cam 'lhe rotation of the cani so acts upon the roller Sl ol the pawl S2 as to permit aspx-ing' l-lB to force lthe spindle l5. together with the carrier and tumbler toward the grinding nina-l 25, whichot' course is rotating at Ya high rate of speed. The glass' is l'orled against. the wheel.l a single cut, such as one oli those and release the in Figs. 9, 10 and 11, l will setk shown in Fig. 9, being produced in the glass'. 'lhe progress of thev spindle is haltet when the eut reaches a predetermined depth by the engagement of the glass with the lingers ot the bell crank lever 24C and the consequent rocking o the bell crank lever. A slight movement of the fingers produces a material upward movement of the rod 95. llhis upward movement, as already eX- plained, moves the wedge block 99 out wardly in the guideways 100 and into the path of the projections 49 of the. disk 47. Thewedge block cooperating with these projections tol-ees the spindle backwardly in opposition to the spring 115. The spindle free to more in this direction and to carry the pawl Si) with it since only the spring 115 is depended upon for moving the spindle forward and the roller 81 is not I )ositivcly held in engagement with the surface of the cam S0. The tension ot' the spring 115 is such as to give the proper cutting speed.

The lurther rotation ot' the cam 80 brings the projection 10Sl into contact with one arm of the. bell crank lever and produces the rocking movement ot this lever in opposition to the spring 109. By this means the pawl 10G advances the ratchet wheel 101 through one notch, the 4gear wheel 10-5 and the gear wheel 102 being turned a corresponding amount. ln consequence ot' this movement. of the `gear wheel 102 the spindle and the carrier 110 are rotated through u predetermined arc, swingA `ing thel tumbler into a position such as that shown in Fig. 0. tor example. @t course the inclination of the tumbler at each. position may be varied and determined by the number of teeth on the ratchet theel 101. The continuing' rotation of th" 50 produces alternately a cut'and a` re'. tionarv movement ot the tumbler about the center el the spindle 45 as an axis. 'When one revolution of. the tumbler and carrier is thus completed7 a series of cuts will have been lormed radiating from a single center as. tor example. the four cuts 146 shown in Fig. 11. Just at the end of a. complete revoA lution of the spindle the pawl 123 released by reason of its engagement with the cani surface 125 and immediately thereafter the pawl carrier 11G is advanced by the engagement of its projection 118 with the cani surface 121. This advancement of the carrier iroduces a rotative move nient ot' the shatt 112 and of the tumbler about the shaft as an axis. rthis moves the tumbler to the next position and depends upon the notches ot the dish 122.

For each complete revolution of the support 1117 in addition to the foregoing. the ratchet 7? is toi-ccd outwardly producing a movement of the carrier 74 and advance ment et' the ratchet wheel 7;. By this means Leanne Therefore the pin ep f op or the several movements of the carrier die l5 as an axis until finally, 'oler completely rotated on g heen revolved at eaeli step,

the pini es the arm 6T into position The completed tumbler may new be re- 'i iii-,owed and replaced by another and the maenine started and operated as before.

face of 'the grii'iding wheel must o oe main* ined in proper form and Jn and for this purpose have proie facing tool 50. riliis tool may be d to face the tool by turning the nandle and the shaft 17. When this snaltt i: 'turned the. tool 3G as a Whole, is edif'aneed reason oi the'fact that the joost Si has downwardly extending pro- ;Eeetion 2312* which is tapped vto receive one of the screw-threaded portions of the shaft. The turning; the shaft also serves to advance, b equal amount in an opposite i rcetion, both the head stoel: and the only the head stock being provided. i a projection 4G and the block being in'ovided with a projection 231 which proj JLions are tapped and engage the oppo- Silely screw-threaded portion of the shaft as clearly shown in Fig.

As already pointed out, the parts 30, and 40 are mounted in guideways and the oase plate .l5 is provided with suitable slots through which 'the projections 31E, 23 and #10 extend.

The pitch o the, 'threads in each of the sferen/threaded sections of the shaft l? correspond, although one has right hand and the other left hand threads. it is therei'ore evident that when the surfacing tool is advanced to some extent to reduce the size 2' the grinding wheel, bvi'aeina' its surface,

. stop ad aneed by a like amount toward the center oi? the Wheel,-in other Words, the relative positi n of the wheelsuri'ace and of the e `nell crank 2li and the head stock,- ogether stili the tumbler and carrier, are

dilierent cuts made at each or the rotativo positions of `he tumbler, a revolutionary movement of the tumbler being effected for each group. This is not essential to my invention and 'the number of cuts radiating from a single. center may oe varied as de-y sired, as already pointed out.

A group of four sets cuts is shown in Fig. l0 while in liig. 9 there are two diff ferent superposed groups of sets, each group Jcorresgending to those of Figs. l0 and il except that adjacent sets in the same group are spaced so that they lo `not overlap.

ln ease it is found desirable to operate the machine at its yhighest speed, this may be accomplished by providing a slightly modi fied cam 150 as shown in Fig. fi, in order that the cuttingr stroke of the machine may be maintained at the same speed while the driving speed may be increased. The eut-` ting speed is, of course, limited hy tlieolnaractor of llie grinding Wheel and the safe operation of the device.

Attention is-particularly directed lo the fact that the depth of the out is autoniati cally determined by, and furthermore is regulated relative to, the surface of the glass adjacent to the eut.. rlhie several cuts may therefore have e. very uniform appearance and also compensation is made for the variations and irregularities in the thickness and contour of the glass.

ltis evident that various structural modi fic-ations' maj.y he eiected Within the spirit and scope ot' my invention, and l intend that only such limitations be imposed as ureiw dieated in the appended claims.

What l claim is: Y

l. A glass grinding machine comprising a grinding wheel, a support, a spindle siiolably and rotativelj; mounted therein.l a driving shaft and interposed gearing for turning' the spindle and moving itiiorvvard and back.

2. A glass grinding :fnachiiieeorrquising` a grinding'wlieel, a support, a spindle 'rotativelyand slidably mount-eel on the support, a carrier secured to the spindle, a shaft, rotatively mounted on the carrier at an angie to the axis of the spindle, a clamping mechanism associated' with the shaft, and

means for automatically producing move eine ne conipising a has l iounted thereon, a head s o lo saine base, a Sp'nde Toaahi .i suppoied by ehe head Stoch secured to 'bhe Spindle5 a sha ""ioiined on the support ai iQ axis vof "ehe ism mountsiindie, ed on the sha` Gaily moving Wheel and menige of nai inovenoenis Vi 5. A giass 0j machine comprising a hase, a grin whe i mounted ihereon, a head stock mounted on the saine base., a spindle ioiaiiahiy and siidabiy supigolted by 'ihe head sine-ii, a support secured io the spindie, a oiia'it ioiatahiy mounted on the of the spindle, a damping; mechanism mounted on the shai, and means for aujoinatic-aiiy producing a ior'gaiii'o nioveineai, of the eianpin mechanism ain each revoiuion of the foi automati- .i from the Yoaive adjusthe ionGiiudi- Comprising 6. A giass grinding machine 1. a head Stoch. a horizontai a grinding; wheel spindle siidahij/ and iofatahiy mounted ahorouu a dri-ving shaft and interposed gearing for aiiernaieiy 'earning the Spindie and nioing it foi'uai'd and hach` 7 A gian@ grinding machinel ooinpiising a o; nding i'vheei, a head stock, a horizontal 5g die iii and oiaaiiiy mounied tm un shaft geared to Y ity of Cams on for inchino; he spindle7 inea A ,Y unon i Y ihe Canis for reieasiug Le s noiel` and means for ei'eih nmeiy turning "i spmdie and moving 1t vinding machine comprising a l a head a horizontal gioiaaifiyv mounted -1 Shai'i, a cam shaft geared io the driving .Sheitan A fuiaiity Canis on said Shaft, means fo;r looking 'he spindle, means dependem` upon one oi "die for zeieasiug ih@ spindlet a. o "i copeiaizing .Vl Wih a ,Second Cam adapted io nuove 'the spin die hac-inwardly, a spring* ding to press the Spindle for 'aidiy, and n iniuenced by producing rota.`

unie when che lock tive movements of ihe si, is reieased.

9. A giass vinding machine head stock, a horizouiai spindie sidabiy and rotataoiy mounted hei'ein, dri-'fing and interposed gea'rin aiieisnaey mov ing the spindle and .hack and roiaiively,` a Carrier the sjoindie, a sha rotaiively i. e right augies ne u e, damping n eci?.- anism immun-.ed on i shaft., and ineens dependent upon. ine v:Cownuzi@muy menne in in advancing machine e ingsV cari and oep with ehe Surface r oaiiv nreveniina i o deeiiniitqe lne eoinprisi i i roaiia'oie ahejxy angieg lio the anis of he grin ing means for autoinatioaii moving the eaii'iei i'adiaiijy iiouf'ard and from' ihe center of the wheel between oaiive movonients ihereoig'and means dependent 'upon iis engageinen surface .of the glass for au'iomaiieaiij;v deieimining ithe iopth of the grind relai-.ive to said surface. n

i2. A glass; grindingmaehineoornprisinp a base, a grinding;- u'heoi mounted thereon, a hea d Sioci( mounted on the saine hase, a Spindie rotatably and siidably supported by the head Stock, a support secured to the spindle, a shaft rotataiiy mounted on the support ai; righi: angieo to he axis of `ihe spindle, and a, damping mechanism mounied on the Shaft, and means for auioniatically moving;h the spindle io and from the wheel for produ@ ing rotativo adjustments of the spindle hei'u'een the iongiigudinai movements thereof, and means for automatically arresting the forward inovenieniy oi the spindle to determine the depih of the out.

i3. A giasg grinding machine Comprising a base, a grinding' Wheel xnouui'ed thereon, a head Stock mounted on the same base. a Spindio i'otatabi'x' and siidabiy supported by the head stock, a support Secured to the spindie. a shaft i'oai'ahiy mounted on ihe support airighi angles 'to the axis of the spin die` Ciampino` mechanism mounted on `the sha'f, means for autoinatioaiiy producing' a rotative movement of he Ciampino mechanism ai each rovoiution of 'he spindie, and inf-ans for auoznaiiealiy arresting iho fon ward movement of the spindie to deteiinine the dop'lh of the cui.

143A giass grinding a grinding wheel, carrier, means for Inmo ing he carrier towaid and 'from the uhoeh a ngel adjacent o zhe outing' edge of he Wheei and adapiod o be eng-aged ii face of die y S being' cui, and u snonie io sauf L stopping machine compiising or'preventing advancement o the carrier toward the Wheel 1G. A. glass grinding machine comprising a base, a grinding wheel mounted thereon, a head stoel: mounted on the same base,

a spindle rotatably and slidably supported by the head stock, a support secured to the spindle, a shaft rotatably mounted on the support at right angles to the axis et the and a clamping mechanism mounted position of the cuts produced by each rotation oi the carrier about the axis ot the -lnding machine comprising mounted on the same base, a

illi a support secured to the rotatably mounted on the g angles to the axis of the clampii'ig mechanism mounted tor automatically from the Wheel spin-ine, a "naisupport rient spindle, and on the shaft, and means moving the spindleto and and for producingrotative adjustments of the spindle between the longitudinal movements thereof, a notched disk removably attached to the spindle, a latch adapted to engage the notched disk to hold the spindle against rotation, and means dependent upon a forward and back movement of the spindle for releasing the latch to permit av rotative adjustment of the spindle and carrier.

18.l A glass grinding machine comprising a grinding wheel, ahead stock, a horizontal spindlev slidaoly and rotatably mounted therein, a driving shaft, a. cam shaft geared to the driving shaft, a plurality' of cams on said shaft, means for loekingfthe spindle, means dependent upon one of the cams for releasingthe spindle7 a pawl cooperating with a second cam adapted to move the lig Wheel mounted thereon,A

slidably supported by spindle baclrivardly, a spring tending to press the spindle forwardly, means influenced by the cam Ifor intermittently producing rotative movements of the spindle when the lock is released, removable means attached to the'spindle for determining the rotative movements thereof.

19. A glass grinding machine comprising a grinding wheel, a head stock, a horizontal spindle l slidably and rotatable mounted therein, a driving shaft, a cam shaft geared to the driving shaft, a plurality of cams on said shaft, a notched disk removably attached to the spindle, a latch coperating therewith to lock the spindle, means dependent upon one of the cams for releasing the spindle, a pawl cooperating with a second cam adapted to move the spindle back- Wardly, a spring tending tofpress the spindle forwardly, and means influenced by the cam for intermittently producing rotative movements of the spindle when the lock is released.

20. A glass grinding machine comprising a grinder, a holder for the glass, means for bringing the glass into contact With the grinder, and means dependent upon making contact With the surface of the'glass for stopping the advance of the glass holder at a predetermined depth ot grind relative to the adjacent surface of the glass.

21. A glass decorating machine comprising a tool, a spindle, a carrier associated therewith, and a Work holder associated with the carrier and adapted to he rotatively adjusted on an axis at an angle to the axis of the spindle, said carrier being movable to carry the Werl; holder toward and from the tool.

In testimony whereof I have hereunto set my hand this 29th day of August, 1914, in the presence of two subscribing Witnesses.

EDWARD A. RYON.

Nitnessesz R. J. DEARBORN, ANNA T. Bron.

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