USRE13892E - yah norman - Google Patents

Description

0. E. VAN NORMAN.

GRINDING MACHINE.

APPLIUATION 31mm DEG.14,1914.

- 13,892. 5 SI1EETSSHEET 1.

Reissued Mar. 16, 1915.

IN VEN TOR.

fiat/2x2 Vi/zZ Ewmz;

WITNESSES.-

ATTORNEY.

0. B. VAN NORMAN.

GRINDING MACHINE. APPLICATION FILED DEO.14, 1914.

Reissued Mar. 16, 1915.

- INVENTOR. ZTVll/VZ/Wllgg A TTOR NE Y.

G. E. VAN NORMAN.

GRINDING MACHINE.

APPLICATION FILED DEO.14,1914.

Reissued Mar. 16, 1915.

IN VENTOR. 026/? ml," him/12ml,

W1 TNESSES:

ATTORNEY G. E. VANNORMAN. GRINDING MACHINE.- APPLICATION FILED DEG. 14, 1914.

1 3,892. 5 SHEETS-$13331 4.

Reissued Mar. 16, 1915.

r lNf ENTOR. Kid/Z672 Va'm Far/242g WITNESSES.-

- ATTORNEY.

O. E. VAN NORMAN.

GRINDING MAGHlNE.

APPLICATION FILED mg. 14, 1914.

RM H O J W m Z m WN we w m w m a, M u m mu m --|5--1|,{--.L|||- MM 1 J 3% A TTOR NE Y.

have, oscillation on transverse contour :i of (leg.

" UNITED -A-TEs PATENT OFFICE.

CHARLES. VAN NORMAN, OF srmnosmw, MASSACHUSETTS.

GRINDING-MACHINE.

Specification of Original No. 1,102,558, dated July 7, 1914, Serial No.

eisla 'ued Letters Patent. Reisgu ed Dial. 16, 1915.

815,358. Application for reissue filed December 14 1914. Serial No. 87?,241.

To all 'w/e am it may concern:

Be-it'known that I, OHARLESTE. VAN Non- MAN, a citizen of the United States of Algerica, and resident of Springfield, in the county of Hampden and State of Massachusetts, have inventedcertain new and useInl Improvements in Grinding-Machines,

which the following is a full, clear, and

exact description.

his invention relates to improvements in a grinding machine of a class which is char acterized by the provision of a rotary tool spindle, and a. head, on which the piece "to be worked upon by the grinding Wheel. or other tool may he carried and rotated, w ii-Til is ad is mounted for, and automatically i to an, axis which i angles to the axis of the tool spindle.

The machine of the class to which this invention relates especially available forthc grimling, finishing or polishing of the miller-internal hall nice grooves in rings cmployed ball bearings.

One object of this invention is to provide means of practical and convenient character for throwing the oscillatory Woil carrying head out of connection from. or into c i tion with, the mechanism which included in the machine for ii1).,='ni1't.ingmechanicallyand.auconiaticiilly the partial-Total rec'pi-ocatoi'y motion of oscillation to the head, which means is operable during .hc action of the oscillation imparting means.

i-nno'ther object of the invention is to provide means whereby the range of oscillation of the Work carrying -head, or length of'thc are of oscillation may be "varied to come spond, for instance, to ball race-grooves in rings of diilei'cnt depths and consequez itly comprising in the arc -conformirig to the greater or less nnn'iher cos of a circle.

Another object of the invention is to pro viclc means Whcrchy the region or field of oscillation, to \vlmtcver extent such oscillation may he, inn be varied.

Another object of the invention is to pro vide menus for causing the oscillation of the work carrying head which is of an improved character and will especially insure a p61 fectly stoarly'lu'ciion, providing against any lash or chattering between the tool and the piece being operated upon thereby when the tangential thcietc.

horizontal. sectional View on lint-Mi e.

piece has been swung to its limit in one olimotion and is receding; or about to recede in its reversed swinging movement.

Another object of the invention is to so mount and support the oscillatory work carrying head that the spindle ofthe chuck or revoluhle workholder is supported-in a most stable and unyielding so that there may be no spindle transversely of the Anothei object deflection of the axis thereof. of the lDVEIiillOl'lilS to pro VlCle mechanism whereby the grinding or ;.nislnng action of the rotary tool may he mitometicnllj i penformed upon a face which in transverse contour comprises an arc of a circle :mo 32] past upon enriace Anothc object of the invention is to pro "i'lfil lDlplOE'ECi means for acqu ring the.

feet? of the support for the retai tool car tying: spindle and means for automatically cross feedin insuring a cessation of the a and other objects fiction as predetermined; toe invention and by the description hereinafter ,iven.

The invention is iiesci'ihed in conjunction with the accompanying drawings and is clefined in the claims.

In the clrawingsz-Figm=c l is a frontele vation of the improved grinding machine. Fig. 2 is a, partial front elevation to illustrate the cross :leecl mechanism for the grindiing Wheel spindle support. Ttltlfh] with parts shown in 5112 right angles thereto. 4- is Fig. 5 i. 1 h r the plane 1110.2 and ontol sectional VlQW taken on erl by line in Fig, 6 represents hall 0 kind and for the ilming the QILUOVGS; which this machine is e'" s-ted. Fig. it;

iallj well z. a l to he herei'zifizeii referred to. 1S vertical (moi view tl'irongh the hose goon tion of the oscillatoi y worlc 3 and the parts of tlric'i'ozichins loo adjacent the axis of oscillation- Fig. uric-W similar to Fig. 5 but? showing scltiiw tional provisions required in the machine for the grinding of ball races of the particuthe statement of the his kind referred to in advantages derived therefrom Wlll be rendered apparent in and manner and especially ohjectsfof the invention. Rig. ilj m view, and

illustrationof the ball race. having the on just referred td. Fig. 11 is a. partial plan Fig. 12-is on line 12*12, Fig. 11', iuusmarga capa; bil'ity in'the machine which is necessary when the same is equipped for the grinding of ball races of the type shown in Fig. 10. Figs. 13 and 14 are diagrams relations and relative motions of parts to. be ground and the particular shapes of such parts. Fig. 15 is a partial elevation showing a device operative for the connection and disconnection of the oscillatory head and the means for imparting the operating movement thereto. Fig. -16 is a plan'view especially showing provisions hereinafter referred to.

In the drawings, A represents the supporting frame or-bed of the machine mounted on which is the head B in which is journal'ed the spindle C on an axis which is horizontal and ranging on what is here regarded as the longitudinal line of the machine. said spindle isrepresented as being provided with a grinding wheel D; and such spindle is understoodas driven at a very high rate of speed through'rneans therefor forming no art of this invention. -The lower portion of the head horizon al cross sliding movement on another shde E which is so mounted on and engaged with the bed or frame A as to be capable of a-longitudinal sliding movement relatively thereto. G represents the head in which is rotatively mounted a spindle G Y which carries a holder G for the annular the groove thereon 1s to movement w latter is oscillated piece such as represented by a: and m which accurately finished. The head G is slidably adjustable on another slide is slidably adjustable on a base member J which is mounted for oscillation on the vertical axis represented by the line yi Figs. 1 and 8, and by the axial center indicating points y in Figs. 5, 9. 13, 14 and 16. The hich the head G whichdirectly carries the work holder G has on the slide H is one which always radial to the center '3 of oscillation of the base J. while the movement of the slide H-is at right angles to such radial-movement-line of the head G. I a post to the upper end 0 which the base for the work carryin head is connected and by which post when the the base and head carried therebyare also corrcspomlingly oscillated. The bed or frame A of the machine at the portion thereof which is under the base J foxthe work holder carrying head is fitted w i'tli-a section A therein of cylindrical form with a central bore therethrough for'the accomm'odation of the post K and constructed with a somewhat massive circular flange A,

- the top of which is planed perfectly flat;

a cross sectional view.

' the bed proper to represent The B is formed and engaged for a H which in turn and finished support for $011. with .a

smooth, and which forms the the-base which has its oscillacomparatively broad surface ibearing thereon. The comparatively thick flange A of the said section A of the bed is directly sustained by the portion A of thereunder; and it will be perceived that the base J has a support, at the portion thereof which is under the joura for the shaft carrying the work holder G. 'By this construction the rotary work'holder out any deflection and with the utmost steadiness.

. -L represents an annular member loosely .surrounding and revolubly movable relatively to the post K. and in combination with which, mechanism, of a kind hereinafter described, for imparting a partial rotaryreciprocatory motion or oscillation to such annular member, is provided. It is to be understood that whilethe machine is bein run, such oscillatory motion of the annu ar member is constant and a corresponding oscillatory motion of the work carrying head ensues so long as the annular member L is connected with the post K.

For the connection and disconnection of V the member L and'the post K, parts and constructions are provided asfollows: The annular member has in its under side a. socket b for a locking pin; 0 represents a member affixed to the post next below the annular member L and which is provided with the locking pin d fitted to'play vertically in a suitable bore therefor in the part 7) and to engage into' and disengage from the aforementioned socket b. Thelocking pin (Z is extended downwardly andhas engagement with a lug or projection e of a flanged collar e which is vertically slidable relatively to the lower portion of the post. The spring a is so applied as to exert an upward forcing action on the collar sothat. when permitted. the collar will rise audcarry the pin 03 into locking connection with the an nular member L. This is merely one form of a clutch. To operate the collar. short shaft 6 is rotatively fitted in the side of the frame, the same having an eccentric stud or roller e engaging with the flange of the ebb lar e. and also a handle by means of which it mav be operated. The part referred ber L is. as will be perceived in Fig. 8. comosed of two sections, the one f being that to which the oscillation imparting link M is connected, while the one f is that in which the socket b is provided and in which the engagement of the locking pin a! is effected. Thesection f is made with a hub f about which the sectionf is fitted. tion has an annular T-slot f for the reception of the heads and portions of the shanks of bolts 7 which pass through the. thickshaft may be run withto as the annular mem- The one see- 'i', may be said that the fieid of o the equivalent thereof.

at M and P in F 5, so that ion: a vgiven cam the throw of the lever and the ness of the other section, receiving locking nuts thereon. By this provision it is possible by loosening the bolts f, and rotating the section f ,which is the one that is looked to and unlocked from the post,--

relati'ijcly to the section 7, which is the one having the link connected thereto and can-- not he revolubly' moved only as the link inn parts such movement thereto,-the field of oscillation of the work carrying head, can nected by its base J to the post K, may be varied as may-be necessary to accord withdifl'erent characters of work formed in the machine.

Reference being had to the tiiagramfh' tilon may, for instance, be one limit..-

the lines to, w, or by the. adjustment per-- missibie between the sections f and 7" of the to be per A annular members, the field of osciiiation' may be Within the limits defined by the Zine to, 1.12 The dotted lines w, 'w, as compared vith those 10 or those 10 w, as compared, with those w, indicate an extension of the. range of the olsciliation of the worl: can nying head which may be accomplished hy the oscillation imparting means to be now described, reference being had to Figs 1 and 5.

N represents a vertical shaft located with-- in the frame of the machine and rotatively driven from the driving pulley N on the shaft N which by bevel gearing N, N drives a horizontal shaft N" Which by the berei gearsN and N", have connection with the rerticai shaft N. The said shaft N has a cam O allixed thereon .i'ith the edge of which coacts the roller stud P of the .lever P pivoted at .P to swing in a horizonthl plane and with an intermediate portion of which lever one end of the link M is connected. the other end of such link being by pivot L connected, as before stated, to the annular member L.

The snring M has one end secured to the link which is jointed to the lever. and having; its othcrend secured to a fixed. part of the frame and maintains the roiier stud I always in contact'against the edge of the cam and prevents any lash or iost motion especially at the time when the :r 'ais oi ti swing or fiftflil." of the in i parts place and ,es 'ieciaiiy ad arr 5:, for l fv 5(5 gr nding opa bail race ring. A a ord oormected in the manner 'tne spring is shown to he would be The pivot connection of the link H and the lever P is an adjnstebie one reason tad and slot formation represented escillation imparting thrust of thelink m ibe in greater or less extent accordingly as "the ball dist'lcnsibic and contractible.

and m connection M is farther from or nearer to the center P'nf swinging motion of the lever; and, therefore, it is manifest in what manner the range or extent of the oscillat-ion of the work hoider head may be varied. It is desirable that the oscillation of the work just suiiicient to carry the groove in the ring being ground back and forth relatively to the edge of the grinding wheel from one edge of the groove to the other;- no scantiness of movement nor over-running of movement being permissible forthe best and most speedy accomplishment of gi o" .c grindin Ii'iasmuc a as the distance between the different points of possible attachment of the link :g; the length oi the lever P and the Point or the linkconnection with the annuar n-i'rnihcr L is variable under thediiierent adji tmems, the link is made longitudinally the same being represcntccLas composed of the sections m,

m and m, the latter being a right and left hand threaded screw engaging into tapped cores in appz'oacncil ends of the sections m which is to have the groove :ein. is carried in the Work which is heated. ivy the proper Haun -iii; of the head G radially role" tii'el'y c axis of oscillation indicated by y, that W; oi the groove cast or formed in the riii ii'lm be finished in this machine is concentric wifrr 2i i' axis line. This will he appar it n aiwinsgmntion of Figv 1 which sho the axis of oscillation. and the limits in opposite iiflirections of the oscillation oi? the ring which is understood. having rapid rotation imparted thereto through means of the belt and pulley (indicated at G in Fig. 1 of the drawings).

The grinding wheel the high speed spi n die 1:? which 15 mounted on the need .8, is,

feed of snbstantiallyusnal kind is proi'idcil. for co-action .lj'etween the slide I? and the longitudinal or base slide l-Z, mirried rearwardl r beyond the center of the ork lvlder and race ringthere i if."

in so thatthe edge of the wheel will .ha're itsgrinding contact against the surface of the bail groove the automatic character of the cro s feed insuring a YET}: siow and limited tron ,1? feeding inm'enient as the grindaction pro and until the grinding of the groove with precision to the exact extent required shall have been accomplished.

The slicev E which is mmable longitudi nally on the bed has at its end opposite that ,a which the grinding wheel is iocatcd,'an

adjustable screw stop 9 so that when the siide is run toward the oscillatory work caread'it can go no farther than to prea s1 is one whereat a plane mitraily through such s'neehfllldwuy be.-

wheel at its proper Worktween its oppositefaces and at right angles toits axis, intersects the oscillation axis line 3 such point of intersection being a distance from the edge of the. wheel equal to the radius from which the groove in the race ring' is generated. 7

The slide E carries a short upstanding:

shaft E having anoperating handle E aflixed on its upper end and a pinion E affixed on its lower end which meshes with the rack bar E immovably secured to a part of the bed. By this provision the base slide E and all the equipments thereof may be bodily withdrawn longitudinally to retire the grinding wheel from proximity to the work as frequently desirable for the testing, and for the removal of one piece and the mounting in place of another piece.

-The slide B in the head of which the grinding wheel spindle C is carried has the very slow feed motion thereof transversely of the base slide imparted through the feed screw shaft Q, understood as combined with and between the slides B and E in a manner usual and well known; but the particular Ineansdevised by me in this machine for automatically imparting the rotary move- ,ment to the feed screw and automatically terminating the feed movement at ,a predetermined time will be now described.

Adjacent and parallel with the feed screw shaft Q is a short shaft Q having a ratchet wheel Q? and a pinion Q, affixed thereon,. said pinion meshing into a spur gear wheel Q fast on the feed screw shaft.

Q represents a pivoted and oscillatory pawl carrier adjacent the edge of the ratchet wheel, or with the teeth of which wheel the pawl Q engages.

R represents a'member mounted for oscil-- lation on the shaft Q and substantially radially extended beyond the edge of the ratchet wheel and provided with an adjustable abutment member R made in the form' of a screw plug and having a thread engagement with the underside of the extremity of the oscillatory member R. The extremityof' said member R also has an abutment member R for coaction with the pawl carrier.

-On the shaft N is a cam S revoluble in a horizontal plane, and this cam advantageously is formed as a protuberance on the "upper-face of the aforementioned cam 0 comprised in the means for the oscillation of the work carrying head G. The cam, revolving,

imparts a. rising, and permits a falling movement of the thrust rod S which plays I through the top of the bed or machine frame and causes an up and down swinging move-.

ment of the tiltable plate S The upward swinging movements of said plate as imparted by the cam thrust red are always in the same extent, but "there may be a lost motion 'bet'ween the tlltable plate and. the abutment member R in amount accordingly of the ratchet wheel.

B. By this means the cross feed motion of the grinder spindlchead, always comparatively slow, may be at the maximum of such slight speed or at a very much diminished rate according to the desires or requirements of the operator.

Upon the rear side ofthe ratchet wheel encircling the short ratchet wheel. shaft Q? is a disk 71., having an extension 7% to the edge of the ratchet wheel, the extremity of which is forwardly right angularly turned to form a shield h which will, when the portion of the ratchet wheel edge relatively to which the'shield is adjusted is brought to proximity with the pawl, throw out or prevent the pawl in its reciprocations from taking into theratchet wheel teeth.

The disk is peripherally grooved as shown in Fig. 4 in which engages the flange or lug at the inner end of a bolt lei, which bolt has the tensioning nut 72. combined therewith in such a manner that when the nut is L screwed up against the outer face of the ratchet wheel it will exert a tightening draft on the bolt, causing the head 'or :lug thereof to bind the disk firmly against the rear side The shield may be revolubly adjusted when the nut is loosened topermit .the groove edgeddisk to freely turn around on the ratchet wheel shaft.

The ratchet [wheel shaft is provided with the usual handle 0" for manually quickly turning it for the, quick withdrawal of the head carrying the. grinding wheel so that the latter will be transversely displaced whenever desired, from its working location.

ion

The details of construction of the pawl actuating means may be considerably changed without evasion of my claim thereto.

Themachine in addition to the grinding or finishing the surfaces of grooves in ball race. rings, of the form. shown in Fig. 13, is also adapted for the grindingor finishing the surfaces in rings of the type shown in Fig. 14, wherein it is seen that the internal surface in the ring comprises, as considered in cross section, a portion 01: which is the arc of a circle and a portion a which is tangential thereto and conformable to the circumference of a cylinder. For the grindingof work of this kind, the work carrying head has an oscillation, as from a position shown in the full lines in Fig. 14 to that shown in dotted lines, and then the work axis of the work parallel with the axis of the grinding wheel spindle, the carrier for the latter spindle has imparted" thereto a longitudinal reciprocatory movement for the grinding of the surface acfi -the oscillatory movement of thewojrkjcai'rying head carrying head remaining at rest with the i and the reciprocation of the grinding wheel being alternated. And for the performance of work of the character just above mentioned, the machine is equipped as represented in Fig. 9, with av cam T, on. the shaft N, and additional to the cam O, the function of which has been hereinbefore fully stated. Vffith this cam -T coacts a lever U pivoted at U and having adjustably connected along the length thereof a link V having connection with the slide E. The spring U hasconnection with the lever U for maintaining the roller stud thereof, at all times in edgewise contact against the cam, The lever U has a screw shaft U mounted thereon and: in such arrangement that itmay be conveniently turned, such screw shaft being operative to adjust the position, as may be required of the block U to which by the pivot U the connection between the link V and. the lever U is made, this providing for required variations in the longitudinal movement of the base slide for the grinding wheel' spindle.

I The base slide E, represented in Figs. 11 and 1:2, is made with the supplemental mom ber W to which the link V'is connected;

This member V has rack teeth 1V thereon with. which meshes the pinion F. on the shaft E which is provided with the handoperating lever E, said shaft being mounted in the slide proper E. In this. instance the adjustable screw stop g carriedby the base slide E has its limiting abutment against the end of the supplemental slide member 'W, indicated in Fig. 11.

Under working conditions the hand lever E is swung to causethe base slide E to be moved to its limit in the directionnoft the oscillatory work carrying hcad,the enagement between the pinion E and rack l3 maintaining these parts in set relations but pcrmittingthe purposed movement of the base slide E for the withdrawal of. the grinding wheel, on the line of its axis, out of proximityto the ring being worked upon when such temporary positioning is de sir-able.

The machine may be made with equipments herein just described in conjunction with Figs. 9, 11, and 1:2, which are so conditiond that the means for imparting the automatic longitudinal reciprocation of the base slide may be removed, or thrownout of connection and rendered inoperative when only the oscillation of. the 'Gl'rf carrying head relatively to the grinding wheel revoluble in a fixed position is necessary. And it is to be noted that when the machine is being employed for a grinding of arc grooves in ball races "such shown in Fig. 13), the can] 0 will be of a, shape to cause, after the. swinging-ofthe work carrying head in one direction, the immediate rover i ments; but where the race ways of the type represented in Fig. 14 are being ground in the machin the cam of the kind ust above mentioned is interchanged for one which will-insure a dwell of the work carrying head at a time when the spindle thereof is parallel with the axis'of the grinding wheel spindle.

' In 'Fig. 16 the slide H which is movable transversely of a line radial to the axis 3 of oscillation of the head supporting base J is provided with astop t which is cooperativewith a stop t on the base J and the slide G which is movable on the slide H on a line radial to the said axis g; of oscillation has a stop u which is cooperative with a stop 11- on the slide it. These two sets of stops have .such relations that when respectively simultion; and they serve as datums of measurement for adjustably positioning the slidable members to insure that differentl sized"- grooved pieces to be operated upon 0 known dimensions carried by the spindle and hav ing known relations to the latter, cletermined by the dimensions of the work holder at G shall be supported so that the centerirom which the arc of the groove in the piece of work is generated is exactly at the said axis of oscillation.

As Worked out in practice, the outer face of the shoulder or collar 1; ofthe spindle is to be considered as the point or surface which may be brought to an invariable relation to the aforementioned axis of oscillation when the stops u and u are brought to abutment; and the axis of the spindle will always intersect the axis of oscillation when the stops t and t are brought to abutment; therefore, by having gage plugs,rods or bars with their ends right angular to their lengths,-respectively corresponding to work holders G3 of different lengths, plug half the width of the ring to be grooved, and to the distance from the center of the ring to the point 3; from which the arc groove is generated, such gage plugs by being mounted to determine the separation between the stops and o 5 and F, Will insure that the work carrying head with the ring or piece to be operated upon will be positioned exactly so that the arc center and the axis of oscillation 3 will be coincident as is absolutely necessary for the proper operation of the machine.

Of course, instead of the employment of gage plugs as hereinabo've mentioned to be supplied in sets corresponding to different work holders, a measure scale could be em ployed; but it is preferred to provide the gage plugs for precision of results and the avoidance of possible mistakes; and by the provisions of the" gage stops an unskilled tool and means for rotatively'drivi-ngl it work carrying head mounted for 08651131.

- mounted, a be person may secure the proper adjustment or positioning of the work carrying head for the performance of any given work without being required to understand the principles or reasons why the exact positioning is acquired. Z a

' 1 claim: l

1. In a machine of the character described, \ii jr a in combination, a spindle carryin ga rota w;

tion on an axis angular to the axis 'o1f '-th tool spindle, means for imparting oscrlatory movement to said head which ,is ad apte ed to be connected with and disconi eqied from the latter, and means located on a allied part of the machine and adapted to control the action of the connecting and disconnecting means. V

2. In a machine of the character described-,- in combination, a spindle carrying a rotary tool and means for rotatably dr ving it, a; work carrying head located for oscillation on an axis angular to the axis of the tool spindle, a member adapted to move in cooperative axial relation with said head, means for adjusting thefield of oscillation of said memberand head," means for impart ing oscillatory ,movement to said member, means for disconnecting said member and oscillationimparting mechanism and for re-connecting at the proper location, and means located on a fixed part of the -machine and adapted to control the action of the connecting and disconnecting means while the oscillation imparting mechanism. is in'motion.

3. Ina machine of the character described,

in. combination, a'spindle carrying'a rotary tool and driving means therefor, a head ;mounted for oscillation, a vertical pivotal for the said vertical post.

4. Ina machine of the character described, in combination, a horizontal rotary tool car'- rying spindle and means for'driving it, a head arranged for'tnscillation on avertical axis, and having-a journal support, in which a.- rotar' work carrying shaft is (You the top of which the base 0! said head hasa surface contacting bearing support, a. supporting portion of I such contact surface having a location directly under a substantial .portion of the length of the spindle journaled in said head, means for importing oscillatory motion to,

said-head, and-means for disconnecting the head. and t e,' motion imparting means therefor, an ifor reconnecting them in proper relation which means are operable duringthe'action of the oscillation motion imparting means.

5. In a machine of the character described, mbination, abed, a feed-slide, having fi xh rizontal tool carrying spindle mo ably ounted on the bed, a vertical post, to be I oscillated, having bearing supports within the-bed, a head having .a horizontal work carrying shaft, the base of which head is connected to an upper portion of said post, an annular member, surrounding, and revolubly movable. relatively to, the post, a im ember ailixd'to the post adjacent the an n'ular member, means for detachably lock- 1 'ing said members together, While the means for a locking engagement with, and disconnection from, said annular member, a collar slidable onthe post and having an acttia tion connection with the-locking device and means for slidablv operating the collar.

7.. Inamachine of the character described, in combination, a bed, a feed-slide, having a horizontal tool carrying spindle movably mounted on the bed, a vertical post, to be 7 oscillated, ahead, the base of which is con nected to an upper portion of said post, and having a horizontal work carrying shaft, an annular member, surrounding, and revolubly movable relatively to, the post, and .having'in its under side a socket, a member aliixed to the post adjacent the annular member and provided with a locking pin vertically movable and adapted for a. lock ing. engagement in, and disengagementfrom, said socket, a flanged. collar slidable on thepost and having a connection with tool, a support for said spindle slidably movableinthe direction of the line of the axis of the spindle carried thereby, and drivingme'ans for the spindle, a work carrying headmounted for oscillation on'an axis angular to the axis of the tool spindle and relatively to which the latter is coiiperatively arranged, respective mechanism for alternately imparting oscillatory=movement to the head,'and a reciprocatory movement to said spindle support, said spindle support comprising a= member oy-which the spindle is carried, and a member, slidable' relative thereto, with which the mechanism for imparting the reciprocatory movement to such-&

support is connected, and means combined with the members of said support for both connecting them as a unit and for causing a sliding movement of the one. relatively to the other, for the withdrawal ofithe spindle carrying. tool from. the workingposition ielazively tov the oscillatory work holding ea 20. In a machine of' the character de-.

support for said spindle, slidably movable, and driving means forthe spindle, a work carrying head mounted for oscillation on an axis angular to the line of movement of g.-,the tool spindle support and relatively to gysupport angular to the axis of oscillation of:

which the: latter is coiiperatively arranged,

respective: mechanism for alternately imparting oscillatory movement to the head, and a reciprocatory movement to said spindle said head, said spindle support comprising a. member on which the spindle is directly supported, and a member, slidable relative thereto, with which the mechanism for imaparting the reciprocatory movement to such support is connected, means combined with the members, of said support for causing a sliding movement of the one relatively to the other, for the withdrawal of the spindle carrying tool from the working position relative 5; head, and an adjustablestop, up to which the member which directly supports the'tool.

spindle may be brought in its movement toseaward the work holder carrying ahead,

E5. to which the tool spindle is coiiperatively- 21. In a machine of the character described, a spindle carrying a rotary tool, a support for said'spindle whichisslidab'ly 1 movable, and driving means for the spindle, aan oscillatory work carrying head relatively arranged, mechanism for imparting a reciprogatory movement to said tool spindlesupport angular to the axis of osclllation otthe head, said spindle support comprising a membenby which the spindle is carried, and

a-- member, slidable relative thereto with which the mechanism for imparting the reciprocatory movement to such support is connected; and means combined with said scribed, a spindle carrying a rotary tool it.

to the oscillatory work; holding vmembers for causing a sliding movement of the one relativelv to the other, for the Withdrawal of the spindle carrving tool from its working position relatively to thd work holding head. 22 In a machine of the character described, in combination, a support carrying a rotary tool spindle which is slidably mounted, a work carrying head mounted fior oscil1at1on on an axis angular to the'line of movement of the tool spindle support, 'a

rotary shaft'having two cams thereon, pivoted levers with which the cams coact, and

links connectedto said levers, onethereof having an oscillation imparting connection with the tool carrying head, and the other a reciprocation'imparting connection with,

the said slidable tool spindle support.

23. In a machine of the. character described, in combination,.a rotary tool spindle anda support therefor which is slidably mounted and which is composed of two members, the first'carrying the spindle and adapted for a slide movement relatively to, the second member, rack teeth on. the second member and a gear rotatively mounted on the first member and engaging the rack teeth, and a handle for normally rotating the gear work carrying head mounted for oscil tion on an axis angular to the line of movement of the tool spindle support, a rotary shaft havin tw-o cams thereon, pivoted lovers with whic the cams coact, and links connected to said levers, one 'thereof having an oscillation impartin connection with the tool carrying head, an the other a reci ro cation imparting connection with the a orespindle support.

24. In a machine of the character described, in combination, a work carrying head mounted for oscillation and means for named second member of said sli'dable' tool imparting oscillatory movement thereto, a

spindle for carrying a rotary tool arranged angularto the axis of oscillation of said head, a slide movable along a line parallel the s indleis directly carried movable on the feed screw, a ratchet wheel having driving connection with the feed screw, a swinging pawl carrier with the ratchet wheeh-and means for automatically imparting a swinging movement to' the pawl carrier. 7 25. In a 'machine of the character de scribed, in combination, a work carrying head mounted for oscillation and means 'for,

imparting oscillatory movement thereto, a spindle for carrying a rotary tool arranged angular to the axis of oscillation of said head, a slide movable along a line parallel with the spindle axis, and a slide by which the spindle is directly carried movable on rst named slide transversely of the line of movementof such shoe and having a i with the spindle axis,'and a slide by which provided with a pawl coacting "line of movement -.a feed gscrew, a ratchet wheel having driving motion relatively slide transversely 6:1: the of such slide and having the; first uiamed connection with the feed screw, a swinging pawl carrier provided with pawl coacting with the ratchet wheel, and means for automatically imparting a swinging movement to the pawl carrier, which means has provision for a lost motion in its coaction with the pawl carrier, and which provision is adapted for variation of. the degree of the lost motion.

26.. In a machine of the character de- 'scribed, lIl-COfllblIlfitlOIl, a work carrying oscillation on a vertical imparting oscillatory head mounted-for axis and means for movement to said head, a spindle for carrying arotary too], arranged with its axis angular to the axis of oscillation of said head, a base slide movable alon r a line .parallel withthe s indie axis, and'a slide, by which the s in lo is directly carried, movable on the rst named. slide transversely of the line'of-movement of the first named slide, and havin a feed screw, a ratchet wheel having driving connection with the feed screw, a swinging pawl-carrier and a pawl thereon coacting with the ratchet wheel, a

member mounted for oscillation adjacent the pa'wl carrier and provided with an abutment member, a rotary cam, a thrust rod actuated thereby, and apivotally mounted and tiltable plate adapted to be swung by the thrust rod and coacting with the said abutment member.

27. In a machine ofv the character described, in combination, a work carrying head mounted for oscillation on a vertical axis and means for imparting oscillatory movement to said head, a spindle carrying a rotary tool, arranged with its axis horizontal and at right angles to theaxis of oscillation of said head, a base slide movable along a line parallel with the spindle axis, and a slide by which the spindle is carried, movable on the first named slide transversely of the first nlmed slide, and having a feed screw, a rate et wheel having driving connection with the feed screw, a]

pawl carrier and a pawl thereon coacting with the ratchet wheel, a member mounted for oscillation adjacent thg pawl carrier and provided with 'an abutment member, a rotarycam', a thrust rod actuated thereby, and a pivotally mounted and tiltable plate adapted to be swung by the thrust rod and coacting with the sai abutment member, said abutment member and plate being related for a lost motion engagement and means for varying the extent of the lost between said parts.

28. In a machine of the character described, in combination, a work carrying head mounted for oscillation, on a vertical axis, a spindle carrying a rotary tool arranged with its axis horizontal and angular slide, by which the to the-axis of oscillationof said. head and mounted for a movement substantially transverse of the axis of the tool carrying spindle, a mechanism for imparting both or oscillatory movement to the work carryi head and a transverse feed movement to tin tool carrying spindle, and means for terminating the transverse movement of i mounting for the tool spindle after the movement has progressed. to a prer k119i. mined point.

529. In a machine of the character scribed, in combination, a work carry head. mounted for oscillation and act-not b means for imparting oscillatory movement thereto, a spindle carrying a rotary tool ranged with. its axis-angular to the axis of oscillation of said head, a base support ma 1-- nally movable along the line of the spin axis, and a slide by which the tool spin is directly carried slidable transversely of the base slide, feed mechanism coacting with said slide for imparting feed motion to tin" transversely movable slide while the l slide remains stationary, means connec the feed mechanism and the oscillatory lied actuating mechanism, and means for stopping the action of the feed mechanism at any predetermined point. f

30. In a machine of the character dcas scribed, in combination, a work carry head mounted for oscillation on a vex ital axis and means for imparting oscillator-v cillation of said head, a base slide movable the spindle axis and a s indie is directly can ried, movable on the rst named slide transversely of the spindle axis and. having a feed screw, a ratchet wheel having drivin connection with the feed screw, an oscillatory pawl carrier and a pawl thereon enacting with the ratchet Wheel, a member mounted for oscillation adjacent the pawl carrier and rovided with an adjustable abutment memer, a rotary cam, a thrust rod, actuated thereby, a pivotally mounted and tiltable plate adapted to' be swung by the. thrust rod and coac'ting with the said adjustable abutment member, a shield' adapted to over lie a portion of the toothed edge or" the ratchet wheel, revolubly adjustable rela tively to the latter and having means for its adjustment and operative after a predetcr-- mined rotative movement of the wheel to force the pawl to a position oi engagement relativelyto the ratchet wheel.

31. In a machine of the character deltd? scribed, a basemember mounted for oscillation and apair of slide members carried by the base, one of. which is-movable on lino radial to the axis of oscillation and the other movable on a line at right angles thereto,

along the line of one of said members comprising a head having a rotary Work holder spindle journaled therein, eoiiperative gage devices respectively on th'ebase member and the member slidable therein, and on the radially slidable member and the member which is slidable right 'angularly thereto, all of which devices when respectively and simultaneously scribed, a base member mounted for osoillation and a pair of slide members carried by the base,-oi1e of which is movable on a line radial to the axis of oscillation add the other movableon a line at right angles thereto, one of said. members comprising a head having a' rotary ork holder spindle joiirnaled therein, coiiperative gage stops on the base member and the member slidable thereon, and cooperative gage stops on the radially slidable member and the member which is slidable right angularly thereto, which stops are'so arranged that when the slide members are positioned to bring the stops of the pairs to abutment one with another, the work holder spindle is brought to an invariable re lation to the said axis of oscillation.

CHARLES E. VAN NORMAN. Witnesses:

WM. S. BELLOWS, GnR. DRISCOLL.

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