US1233608A - Grinding-machine. - Google Patents

Description

E. P. SACREY.

GRNDING MACHINE. APPLICAT|6N mzp MAR. 30. me.

Patented July 17, 1917 1 3 SHEETS-QSHEET 1.

V ywemloi Patented July 17*, 1917 3 SHEETQ-SHEET 2 E. 'P. SACREY.. 4 GRINDING MACHINE. AP PUCATION FILED MAR. 30. I916.

Patnted Jul 3 SHEETS- llllhH Il eas es.

Emma r, SACBEY, or PHILADELPIHIAI, PENNSYLVANIA.

Application fi ed mmh 80,1916. serial No. emu;

7 '0 mill 1171mm (it may (:mimr-n:

Be it knownthat 1-, Emma citizen bf the United States, and resident of Philadelphia, eounty of l hiladelphia, and State ofl.en.usylvania, have invented an ImdH'UVGllIOIIt in (h-inding-Maehiues, of which the following is a specification.

'lhe objeetof my invention-is to providea construction of grinding machine suitable for .efi'eetively' and rapidly grinding arltielesqjaeeording to jpatteru, whereby the wor: may be accurately done and at a eosth y 'idwei-tlam possililewhere 'h'and manipulation of the work alone is-e1n ,ployed. v p I a A further ,objeet of the invention is to euah le the machine to he adjusted to present llhe griudiug wheel at any angle to the work,

and to maintain said angle during the trans- .yeirse .umyeiueut ol' the worlg relativeto the wheel and while the i eoaetion hetweeujthe holderforthe grinding wheel and holder .for the work is (unillolh'd by use of a pattern.

,M'y ohjeet is further. to provide, an adjustable tin'nplet set-in respet't to a delinite patteun carried on.v the iuaehine and by miaulsof whieh adjuslal-mle templet the work may he set so to be properly (-laimmd-upon the work-holding lahle. whereby said work ,,\'il'l have tlu-fdesired position to insure grinding under (-ontrol of the pattern.

A furthei ohjeet is toprovide} in a mal chiner ol the rharael'er v above unheated,

, nieans by whieh the.,eoartioii between the [grinding ii'l leel and work may he'surh that any delinite depth ol rut may he lil jlllfid," when-h after the work IS set aee 'fiahug tol teuiplet, the sameextent ot ei'huliugmayh he had |th eiu-h misting. longing or stamping ol'n the same kind.

Win. the above and other ohjei'tsin View,

the nature of whit-h will he more-fully undevslomt from the desvriptio'u hereinafter,

'lhe innmtiou ronsists in the novel l'UHSill'llb' -tiou id" in.

hiding maehine as hereinafter nunre' Full "described and defined in' the ela ms.

, lteferrin tothe d1' a w ngs :l* igure l 1s aside eleva tionof a grinding machine em hodyi-ug my invention, with portionsnthereay Fig. 21s a front elevat on of tlle same; Fig.5. 3' is a sectional view of the elamping means between the base and head;

Fig. 4 aq plan view showing the mannet of employing" the templ'et in settl ng: the

enmniiwe-mAcm-nr Specifleetion 01 Letters Patent. I

If. Sammy, a y

' work, indicated. at 28 the extent ef the perlfatenteila-Iu ly 17', 1917.

work to-be ground perlim-inary to clamp-- ing it in position; Fig. Tris an elevation of the te11u)let=1'e1noved; Fig. (i is a plan view showln-g tl le'nie'aus for' adjustin'gfthe Work table toinsure the degree oieut; Fig. 7 is a plan yieiv ,of-my improved machine;

and Figs. 8 -=an l 9 are cross sections of the perimeters of the usual shaped grinding wheels employed in lllllCl1l1l8S'0- this a s- 2 1s thebed oi the machine and may be of,

any' suitable shape, that shown being. of

pedestal form. Adjustalily supported upon the top-pf the bed1 2isthe-turret' ii, the con .neetionvheing suehthet the turret'is capable of swinging about a vertieal axis. The. ex-

tent of the adj ustinent of the turret ma-y be indicated by ausca'le '14; and it may be clamped in the position of adjustment by theeen't1'allxilt-13earried by the base of the turretaud drawndown by-the; transversely arranged eecentrie ,shizift 10 in the bed ,adapted to he operated by "the lever 11. \V'hen the-parts are in the positionshowny the turret is fixedly clamped upon the bed.

'lThevnuts 131m the bolt liz ma be adjusted to eou| )eusate for wear and to" insure that the clampingaetioii shall be sufficient for the purpose.

.Theturret 3"1na-y be provided with" a handle Wait so des ired, to facilitate its adjustment' (in the bed; and is provided with i a slidingiheiul l"carrying the bearings 7 in \\*hi( h the shaft 9- of the grindingrwheel 6 is jmlrual'mhsa'idfshaft bei 'ig prot'ided with the helt wheel arrangedhetweenthe bear ings, as shown; ""ilhe shapes of the grinding win-us at'the iperiineters suitable for a inaehine of this eharaeter are indicated .in Figs. 8 male. 'lhe head is adjustably'supported upon the turret by a longitudinal guide 5',

very similar to \vhat'is en'lirloyed in-lathes; 1 and tlusguule is arranged transversel to the axis of'the-jshaft' 9 of'the 'gri ing wheel, so that-the grinding wheel may be i shifted *in., the plane/ of its rdtation'. The, head 4 may be reiaprocated by any suitable handoperamdmeans, that shown, by way. of example, be ng a'riu-,k 15 seeuredto the head a ud; a genr segi'ueut 16 ad rocked by the handle 17-, its-Will be under stood hy referenee to Fig. By=0seillating the handle 17, the head] 4 and its grindingi wheel 6 may .he"shifted horizontally; so i:

missible movementgtoward the work being regulated by the traversing arm 38 and the pattern 37, as hereinafter more fully described. The traversing arm 38 is horizontally guided upon the head 4 and adjustablv clamped in position by the clamp The base 2 of the machine is rovided with a-laterally extending guide rame 18 having one or more adjustable clamps 21 which may consist of slotted portimis 21 to one of which is attached a screw bolt 21 upon which the hub ofa handle 21 is screwed as anut. By throwing the handles upward, the split portions-.21 are forced toward each other so that the guide frame 18 is adapted to ela'mp the downwardly extendingpart 1.9 of the adjustable bed 20. This part 19 is provhled with a rack 48 with WhiCha. pinion 49 meshes, said pinion adapted to be rotated by a handllever journaled toethe guide frame 18. 'The hand lever 50. is provided with a detent 52 which engages holes in a locking segment 51 on "the side .of the guide frame IS, as clearly shown in Figs. land 2. in the position in which the-parts are shown. the head 201s n1 its lowermost position; and as the hand lever 50 is moved tothe right (Pig. 1 ).the head 20 will be raised to-the lesired position and ma then be first locked by the detent 52 am subsequently clamped rigidly by means of the clamps 21 so as to take the strain ofi' the detent 52. x r

The head 20 is formed with dove-tailed guides 23 arranged. transversely to the plane of the'grinding wheel, and supported. upon this head 20 andits guides 2.3 is arranged the slide frame 22. The slide frame 22 1s j .i o.

provided with a lower table do upon which the pattern. 37 is clamped by the clamping devices 36, said pattern heing positioned to cooperate with toe traversing arm 33. as before explained. The slide 22 |s further which are joined in-an auxiliary guide head 25 having dove-tailed guides 29 arranged at right angles to the'gnii les 2 Supported by and guided upon the supplemental guide I head 25 and itsgui-les'20. is the \wn'k-tablo :52; upon which the work 28 is clamped by ineans ol' the'elampmg devices 27'.- it is lhas seen that th table 35 for the pattern and the tahh-Jli for the work are arranged al dill'ijrent elevations the former adapted for ooperation with the traversing arm 3-38 and the latter for cooperation with the rinding \\'heel (3 the action of the. bitter upon the work being controlled and gov-.

erned by the cooperation of the traversing arm 38 \vuh the p:dtern.'il7. As the slide frame-'4 is movable to'and from the. pattern table 35 and the.work-table21L it-is manifest ihat the grinding wheel 6 is permitted to grind the work'to any depth whieh is permitted by ihe lraw-rse arm R in itsconpattern.

be shifted'toward and from the work 28 in accordance with the dictates of the pattern, and as the work is simultaneously moved transversely at the, same rate as the n1ovement of the pattern, the grinding performed on the work will bring the said work to the shape of the pattern. The slide frame 22 may be. shifted upon the head 20- by any suitable means such as employed in lathes, but I prefer a construction such as is illustrated and which comprises av suitable rack 41 secured to the slide frame 22 and engaged by a. pinion 42 secured upon the upper end of the shaft 43 journaled in the head 20. and which shaft maybe rotated by hand control. In the partieuiar mechanism shown, the shaft 43 is provided with a worm wheel 44, and said worm wheel rotated by means of a worm 4:'i secured to a horizontal shaft :46 having a hand wheel 47. By rotatingthe hand wheel 47 in one. direction or the. other, the slide fran'le. 22 may be shifted upon the,

head 20, as above described Any other suitable means for shifting this slide frame 22 may be employed if so desired; and I therefore do not restrict myselfto the particular means shown. I a v y The work table 26' is emmected with the auxiliary guide head 25 by the dove-tailed.

guide 2!) before referred to, and by the means shown for adjusting the table upon the. guide frame longitudinallythereon whereby it may be adjusted relatively nearer or farther from the. grinding wheel to yary the depth of cut under the. control of the In the particular mechanism,here shown; the guide frame 25' is provided with. a groove 32" transverselyto the guides 29, and in this is fitted a slide block 32 in which an eccentric 30 is journaled. vThis eccentric has a journal bearing or axis on the. screw stud 31 carried by the work-table 26. as i-learly shown in. Fig. l. The. eeeen trie 30 is provided with a. lever 39 which is furnished with a pointer traversing the. scale. 33. Vhe'n the. lever 39 is moved over the scale, it rotates tlie eceentric killabout the stud i-iL'andat the sametime shifts the block 32"transversely. but as the block is held against nmvement .to or from the. grinding wheel. it follows that the work-table. 26. the stud 31. and lever i!) move bod'ily' together with the work toward or from the grim-ling wheel under the adjustment caused hvfithe movement of said lever 2!). This form o'l" I so menace adjusting device permits of a very slight adjustment of the table 26 upon the auxiliary guide head 25, and at the same time holds it against accidental displacement when a'd j listed, but I do not confine myself to thls particularmechanism for accoi nplishin this special function. The special object 0 this small adjustment is to enable-the work after being clamped in position to be moved forward to the small extent necessary to enable the grinding wheel to take off just enough cut to provide the proper finished shape. The adjustmentis made with each new piece of work clamped in position upon the table for in practice the work in therough is first clamped. ,in position corresponding exactly to the relative position of the pattern 37 and is then adjusted forward toward the grinding wheel. the small distance which is necessary to secure the proper extent of out upon the casting or other piece of work 28- It will now he understood that in the grinding operation, the pattern 37 is clamped in position upon the table so that its finished edge projects slightly be yond the tahlefthe lover 3-9 is thrown to the rigl it (I1ig. 2) so: that the table 26 is in its normal position farthest away from the grhidingiwheel and with its :forward edge preferablydirectly above the forward edge of the pattern table ivh'cn the pattern 7 has heen'clampcd in position. a. templot arm is applied to and guided down upon vertical guide 1% on one of the parts 2+ of the slideframo 22 until it is in alinemont with the pattern. This templet arm 5a is provided with a slotted extension 54 upon which are clamped a plurality of toinplet fingers said fingers lieing iadjustably clamped in position by any suitable form of clamping devices indicated at 5!) (Figs. l and 5). These tcmplet fingers. 55' are shown as slotted so that they may he moved toward the pattcrnto contact with it sill)- stautially the same as'indioatcd in Fig. 4 where they are shown in contact witlnthc work 28. After the tcmplet lingcrsfifi have liccn once adjusted to the patlicrin the temph-t as a whole is thereafter only employed in' connection with the adjustment ol" the work. i In performing: this function; the lrmph-i' is. mo'vcd upwardly upon the guide I -lto bring the tcinplct lingers 5? to a lover just above the \rork-tahlo 2 and the work 28 is then adjusted to the lingers and rlampod in position by the clamping dorir'cs 27. as indicated in Fig. -l. When this is done, th tgmplct may he slipped oil the.

top ol tho Quidi- Eli during the grinding oi the work :28. \Vhon a new piece, of work is to he applied. the tcmplct is slipped hack into position upon the guide-H in position the new piece of work, and aftrr it has been clamped in position the tcmplrt is again romovod, and soon with each piece of'work so long as the work corresponds to the pattern 37. When the work has been positioned upon the work tahlo 26, the lever 39 is thrown over to theleft (Fig. 2) to the de gree required for the extent of cut necessary which .will push the work 28 forward to the degree required. to insurethe proper grinding. The hand Wheel 47 it; rotated until one edge of the Work comes into alineinent with the traverse arm 38; The lever 17 is then pulled forward to bring the trayei-se arm in contact with the pattern 37, and also to bring the rinding wheel (3 into grinding operationwith the work 28. The lever is maintained under the pull of the hand so that the transverse arm 38 is ma n-- tained in contact with the pattern 37; and at the same time the ha'ndwheel '47 is Totated to "move the slide frame trans= vcrsely. While this action is taking place; the pattern 37 operating upon the travers arm 38 causes the slide frame 4 to be shifted back and forth correspondin to the irregularities of the pattern, and this operation of the frame 4 carries the grinding wheel 6 fi'irward and backward in a'corresponding manner and'ftherefore causes the work -28 to be ground in exact accordance with the shape of the pattern. One complcto traversing of the work across {the grinding wl'icel will give the requisite finish; and therefore the operation is both effective and quick. Moreover, it is Hint possible to perform defective, grinding when the pro visions ofthc' machine are carefully employed in the manner above described.

To some cases where theopcration of lhc portions, it is essential that the grinding whorl shall be adjusted to an oblique plane and this is acromlishcd by rotal'in; the (or rot head 2-; to [ho proper dogzrco aiul'thrri rlamping: it in that positiouol udjustumnt. When this is done [he grinding whorl may perform its lulu-lion in the maimvr ab rt" doscrihod and |)|(Nlll umlcrirutling: in lhc work. \Vhcn the grinding whorl" lu-conu's worn and dressed down by the diamond point :36 so that its diamol'rr is malvrially less than that shown, is is mauil'osl lhal; the traverse arm :38 must. lu' rorros mudingzly adjusted upon lhc slidc lu-a'd l: and lhis is a'cronmlisluul through the adjlistalilo clamp 40. Otherwise, it would be necessary to providca new relative adjustment For the work toward thcgrinding wlu-cl to componsatc for its wear, which-,n|cthod would naturally dorango the simplicity ofthe tcmph-t means of positioning the work with respect to thogrinding, wheel, and I therel'oro prefer to employ the construction in which the traverse arm 38 is adjusted to suit the wearing down of the grinding wheel.

It will now be apparent thatl have devised a novel and useful construction which embodies the features of advantage enumerated as desirable, and while I'have in the present instance shown and described the ,preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it to be understood that I do not restrict myself to the details,

as thesame are susceptible of modification what I claim Letters Patent, 1s:-

1n 'arious particulars without departing from the spirit or scope of. the invention.

- llavin now described my invention, asnew and desire to secureby the slide fralnmmeans for im )artin" atransverse reriprocating movement to the slide frame, a grinding wheel, means for supportin; and moving the grinding wheel. in the '"':||idmovable therewith in allnement. with the slide 'rlampod uponthe support, means for unplane of its rotation toward and from the work supporting l'neans. and means on the supporting means for the grinding wheel the pattern support arranged to traverse a batlern thereon durum the transverse movement of the slide frame for controlling the extent of movement of the grinding wheel 'and its supporting means.

In a g'riiuling machine. the rombination of a main frame, a slide frame adjl'isl'ably supported thereon with (-aparity for transvr'rse' movemont, means movable 'wilh'said slide frame for supporting work to be ground, a pattern support also carried with frame. a pattern, delarhably parting: a transverse reriproraling moves nu-nt to the slidel'ranuu a grinding" wheel,

means I'm' supporting and moving the grinding: wlua-l'ii-i the plane of Its rotation toward and front the worlc supporting means'oi the slide frame, and adjustable means on the ul'e'ans for supporl mg and moving the grind ingwheel aml in alinoment with the pattern arranged to traverse the. pattern for ron trolling the extrnt ol movenwnt of the grinding wheel and its supportingmeans andto rompensate for the wearing down of the grinding wheel. 1

3. In a ,e'rindin; machine, the rombimit-ion of a. main frame, a. slide frame :uljustably supported thereon .with capacity for transverse movement, means movable with said slide l'ran'le for supporting work to be ground,

' a pattern supp- .n-t also rarried with the slide 'l'ranu', means for imparting a reeipl'or'aling movement to the slule lrame, a grinding moving the wheel, means for supporting and moving the grinding wheel toward and from the work supporting means of the slide frame, means on the supporting means for the'grinding wheel and movable therewith in alinement with thepattern support arranged to trav erse a pattern thereon during the transverse movement of the slide frame for controlling, the extent of movement of the grinding wheel and its supporting means, and adjusting devices for adjusting the Work sllpporting means upon the slide frame to or from the grinding wheel relatively with respeetito and independently of the pattern support to govern the extent of cutto be made.

4. In a grinding machine, the combination ofa main frame, a slide frame adjustably supported thereon with capacity for transverse movement, means movable with said slide frame for supporting Work to be ground, a pattern support also carried with the slide frame, eiproeating movement to the side frame, a. grinding wheel, means for s1 1pportingv and grinding wheel toward and from the work supporting,- IIIGRIISLIHBMIS on the supportingmeans for the grinding wheel and movable therewith in alinement with the pattern support arranged to traverse a pat tern thereon during the transverse movement of the slide frame for controlling the extent of movement of'the grinding wheel and its supporting means, and a removable adjustable templet guided upon the slide frame so. as to be shiftable from a position in alinement with apatt-ern upon the pattern support into a )ositionto act as a templet to set the worlc .upon the work supporting means.

- In a grinding machine, the combination of a, main frame a slide frame ad'ustabl supported thereon with capacity for transverse movement, means movable with said slide frame for supportingwork to be ground; a pattern support also carried with the slide frame, means for imparting a reciprocating: movement to the slide frame, a

grinding wheel. means-for supporting and moving the grinding wheel toward and from the work supporting means, means on the supporting means for the grinding wheel and movable therewith qn ahnement with the pattern support arranged to traverse a pattern thereon during the transverse movement of the'slide frame for controlling the extent of movement of the grim'ling'wheel and its supporting,means, a removable adjusta'tble tl'n'iplet guided upon the slidewframe so as to he shiftabl'e from a position in alinement fwith a patter-ft upon the pattern support into a position to act as a tem plet to set the work upon the work supporting means, and

adjusti-mg dm iresfor adj'uslin; the worksupporting.means upon the slide frame to or from the grinding wheel relatively with respect to and independently of the pattern support to govern the extent of .cut to be made.

6. In a grinding machine, the combination of a mainframe, a. slide frame adjustably supported thereon with capacity for transverse movement, means movable with said slide frame for supporting work to be ground, a pattern support also carried with the slide frame, means for im arting a reciprocating movement to the s ide frame, a

: grinding wheel, means for supporting and moving the grinding wheel toward and from the worksupport ing means, means in alin ment with the pattern support arranged to traverse a pattern thereon for controlling the extent of movement'rof the grinding wheel and its supporting means, and means for adjusting the slide frame vertically relatively to thegrinding whee to comperuatc for varying thicknesses 0 work to be ground.

7. In a grinding machine, the combination of a mainframe, a slide'frame adjust ably supported thereonwith capacity for transverse movement alone, means movable with said slide frame for supporting work to be grou'nd,a pattern support also carried with the slide frame, means for imparting a reciprocating movement to the slide frame,

-a grinding wheel,-means for supporting and moving thegrindin wheel toward and from the work supporting means, means 1n vertical ahnenient with theplane fof the grinding wheel and ti 'e pattern support arranged} to traverse a pa tern thereon for controlling the extent of moveme ntyof the grinding wheel and its supper-tum means, andameans for adjusting the grinding wheel: and its supporting radius together with the means fortraversing the pattern to hold the axis of the grinding wheel; said means for traversing the pattel 'at angangle, to the line of adjustmenhthereof to and from thework. supporting mear ersing the pattern'are obliquely arranged to the-line of movement of the slide frame and" the work supporting meansihereof. i 8. In agrinding macl11ne,the combination of a main frame, a transversely reeiproeable slide frame having a work support and a pattern support at diiferent elevations one above the other, means to reciprocate the" slide frameya-sliding head movable'to and from the slide frame, means for reciprocating the head, a ,grindingwheel carried by the head-in substantial horizontal-alinement with the work support, and atra'verse arm also carried by the head in substantial horipattern support at diflerent elevations, means to reciprocate the slide frame, a Sliding head movable to and. from the slide the pattern support, a pattern detachably clamped upon the pattern support and engaged by the traverse arm, and, an adjustable templet means arranged foriuljustment to the pattern and acting as a gage for adjustingthe work upon its support.

10. In a grinding machine, the combination of a main frame, a transversely reciproca-ble slide frame having a work support and a pattern support at different elevations, means to reciprocate the slide frame, a slid ing head movable to and from the slide frdmmaneans for 'rmiprocating the head, a grinding-wheel carried by the head in substantial horizontal al'inement with the work support, a traverse arm also carried by the head in substantial horizontal alinement with the pattern support, a pattern detachably clamped upon the pattern support and engaged by the traverse arm, an adj list-able and relatively to thepattern to govern the extent of cut to be given to the Work.

ll. In a grinding machine, the combination of a main frame, a-transversely reeiproeable slide frame havmg a work support and a pattern support at different elevations,

.means to reciprocate the slide frame, a Slid ing head movable to and from the Slide frame, means for reciprocatingthe head, a grinding wheel carried by the headin substantial horizontal alinement with the worksupport, a traverse arnralso carriedhy the head in substantml horizr'mtal-alinement,

with the pattern support, and a. turret support for the head for adjusting' the angle of the grim'liug'whwl to the work support. v 12. In a grinding 1nacl'nne,-tl1e eombina' tion of a main frame, avslide frame sup ported thereby and iula-pted to be reeipro catedgmeans to reciprocate the Slide frame,

a pagtternsnpport. and a work support t1'- ranged at different elevations nnd'eirrried by the slauframe said supports being parallel to the plane ot-movement of'sald frame,

clamping.devicesufor said supports for respeetively, holding the pattern and work thereon, a slide read supported upon the, mam frame and capable of reeiprooation,

transversely to the line of movement of the.

slide frame, means for: reciprocating the shde head, a grind 1g wheel carried by theslide .head and arranged a linement with 'the line of movement of the slide frame,-

the work support so as to be movable to and from the work held thereon, and a traverse arm also carried by the slide head in alinement withthe pattern support so as to traverse the pattern held uponsaid sup port.

13. In a grinding machine, the combination of a main frame, a slide frame support ed thereby and adapted to be reciprocated, meansto reciprocate the slide frame, a pattern support and a work supportarranged at different elevations and carried by the slide frame said supports being parallel to the plane. of movement of said frame, clamping devices for said supports for respec-- tively holding the pattern and @rk thereon, a slide head supported upon the main frame and capable of reciprocation transversely to means for reciprocating the slide head, a

grinding wheel carried b y the slide head and arranged in alinement with the work support'so as to be movable to 'and from the work held thereon, a traverse arm also carried by the slide head in alinement with the )attern support so as to traversethe pattern held upon said support, a turret support for the slide headby which the direction of its vided reciprocation in respect to the direction of movement'of the slide frame may be adjusted, and means for holding the turret in adjusted position upon" the main frame.

14. I;i 1.a grinding machine, the. combination eta-main frame having fixed guides, with a sliderframe reciprocable horizontally upon the fixed guides thereon and proth. a ,work support fixedly secured thereto to move as a unit with the reciprocating slide frame, a grinding wheel, a head supporting the grinding wheel with its axis,

in horizontalalinementwith the work support and freely re'ciprocable upon the head to move the grindin Wheelhorizontally to and from the worl r means I" reciprocating; the head and its grinding-wheel whereby the grinding wheel 'is reciprocated during the grinding opara:

tern support and a work support-arranged at different elevations and carried by the slide frame said supports being parallel to :the plane of movement of said frame, clampin devices for said supports for respective y.v holdingthe pattern and work thereon, a. slide head supported upon the main frame and capable .of reciprocation transversely to the line of movement of the slide frame, means for reciprocating the slide head,- a grinding'wheel carried by the. slide head and arranged in alinement with support during ,the grindingoperation, and manually operable tern support and a work support arranged at different elevations and carried by the slide frame said supports being parallel to means to reciprocate the slide frame, a patthe plane of movement of said frame, clamping devices for said supports for respectively holding the pattern and work therein, a slide head supported upon the main frame and capable of reciprocation transversely to the line of movement of the slide frame, means for reciprocating the slide. head, a. grinding wheel carried by the slide head and arranged in alinement with the work support so as to be movable to and from the work held thereon, a traverse arm also carried by the slide head in alinement with the pattern support as to traverse the pattern held upon said support, an adjustable bed for supporting the slide framewhereby it together with its work support may be raised and lowered, adjustable means for raising and lowering the adjustable bed ranged'at di erent' elevations and-carried by' i the slide frame said supports being parallel to the plane of movement of said frame,

v 11 1 *spetive y holding the pattern and. work clampin devices for said supports for retherein; a slide head supported upon "the slide frame, means for reciprocating the ,slide head, a grinding wheel carried by the slide head and arranged insalinement with the work support so as to b mo able to and amain frame and capable of reciprocation transversely to the line of movement of the from the work held thereon, a *aversearm V also carried by the slide headfzn alinement' with the pattern support so as to traverse the pattern held upon said support said slide frame also provided with a guide arranged transversely to the plane the pat I .tern and work supports, and an adjustabletemplet adjustably supported by the guide and having ngers said 'templet adapted to support to e gage a pattern thereon for aduStment ofithe fingers and then be brought be brought i to alinement with the pattern 3 into alinement with the work support to enable the work to vbe properly adjusted ti on.

18. In a rinding machine, the combination of a mam frame having fixed transverse guides, with a slide frame reciprocahle upon the fi ed guides and provided with a work support, a grinding wheel in alinement with the work support, a head supporting the grinding wheel and reciprocable upon the main frai'ne to move the grii'iding 'wheel toward and from the work support, a rotatable turret carried upon the upper part of the main frame and upon which the wheel carrying head is guided to change the.v angle of the grinding wired to the work support, manually operated means carried by and nwvahle with the turret for reciprocating the head and grinding wheel, and devices for controlling the extent of movement of the head and grinding wheel comprising devices part of which is secured to the slide and the other to the reciprocating head.

19. The combination of a horizontally reciprocating work sup ort, a rotating grinding Wheel, a support or the grinding wheel, means to reciprocate the support and grinding Wheel to rind from the work support,

-' means to reciprocate the work support transversely to the direction of its reciprocation, and means to control the reclprocations of the grinding wheel and its support comprising a pattern and a t'averse arm movable over the pattern on the horizontally reciprocating work support.

20. The combination of a horizontally reciprocating work support a rotating grimling wheel, a support for the grindin wheel, means to reciprocate the support am grinding Wheel to and from the work support, means to reciprocate the work support across the plane of rotation of the grinding wheel, means to control the reciprocations of the grinding wheel and its support comprising a pattern and a traverse arm movable over, the pattern, and hand adjusting means for adj listing the work support transversely to its reciprocating movement independently of the pattern to regulate the extent of cut on the horizontally reciprocating work support.

In testimony of which invention, I hereunto set my hand.

ELMER P. SACREY.

Witnesses:

R. M. HUNTER, FLORENCE DEACON.

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