US1280024A - Spindle-stop mechanism. - Google Patents

Description

5 5T: HAZLLTON F. NENNINGE P' SPINOLE smanzcmmsm. I

A'rrugnlon mco atom. 1915. I

-- I Patented Sept, 24,1918.

UNITED srrATEs "PATENT QFF Q 303E311. BAZELTON mm warrant. mmmnann, or cmcmnn'rr, 01110.

srmnz-n-s'ror 'macnmrsm.

Application filedgllec ember sklfli. Serlol 80-39388- To all whom it may concern:

Be i hknownthnt 'we, Ronnn'r T. HAZEIn won and: Imam F. Nnnmnonn, citizens of Ginoim (1 State proved the to!- the United Stalfes, and at I I pin le-Stop Mechanism, of whwh lowing specification is n full disel'osum.

Th lS invention deals with an ilnproyea confirm-system for an opferatmg mechamcal oi-ga inn-Hon, and in" itspreferred more com cret nspecnfit proposes; wmecmarl eys:

or enhancing the, autumn of maehjne-tx-xpls, such :as milling-mnehlnes, sore naohinesyetol F I e objiect warm-11mm eontenl 4 V f in various, mnohinesto efieot a more com le te regli hltion ofcthe automatic opera;

tioms thereof, us well an lnoreeflioienis'ly se-uwNo. the proueloni notion-- l wwork may bo l-rolled (D1116 *9 thmzpECfified tan-bi" "Without f e my to: tl-i'if'nt 'tombnlx-t 'lwy a v Mingeuttor. A mmepnof :in: s oonnoot mn as n1 w=h ruby ti etable 'etlunn; to its iniiti n1 g 111 rap. )roprinte motion t in nutter to provide mm a POS- l lover, without; seth, g In (mm the table hu oompleted its mturn stroke andis 1"oud ngn111 to advance.

on] 'oontrol-gystein that, ,lnny' be made Speed'- tripe to yield a wide r live'r'siey of mo,ve-

ments 'to a worksupportlng table.

Another object is to establish a control mechanism based on a simple mechanical system ajfl'or ing the attendant a wide range of adj 11$!- b'lity; ennbling him in the sim- 1' mrinner, and without drawing 111 a gh order of skill 01" of understanding, to set the mechanism for automatically per forming suchfmore or lessyoomplex actions as maybe best adapted fm accomplishing a given amount of-usefulwork in the shortest aggregate time. e

Another object is to reduce to simpler pro: mrti'onsw Vcert ain speed-cllange el ements' heretoiore required, by rendering available a Patented Sept. 24, 1918.

simple sel -meme, whereby a oll nr age-gear may, v

byflmrely being 'lgransposed, be connected with :1 different during-element and whereby a pair of such gearsmnybebroughtinto reciprocal relntion with the transmission in wlfioh they are embodied.

Another object is toprovide a system of. transmission providing: a. plurality of torlfli FmI-dBIf lhlt-S so related to the-main source of power'und 0 c'lilfirh elements: as to ennbl'eia Wide variety" of 31m 1 rufios and directions of movement to obtained by means of colm'lparati'velyf17 v 'me'chanical pulfts fsuoh as'gen1's, eto. lhxother purpose is to"p1'ov-ide a-simple mochanica] speed-box operated by automatic Another ob ect is t provide a; lneohnnical 1 organization in which a work or tool supportmg-element may be caused automoboally to progress through a. predetermined cycle, of operations, at times under the nctnntmn of 1; 11111101 drrvl-ng-trarn,.and at other Jj jlnogabei'hg propelled'by an auxiliary drivikng-tra'injhfld wklosoin snehsi way as; will 7 enable the seql mnce and duration of such .op-

exertions to be easily ,ndjnsted and determined by ,the attendant withontneoessitating' complex and costly instrumentali ies; Otl objects and advantages will; be in part. indionted, in the following description, andin nart renderml apparent 1:: connection with the unneXed'dra-wmgs.

To enable others skilled in the art so fully to apprehend the underlying features thereof that they may embody the same b the numerous'modifications contemplated by this invention, drawings depicting a preferred typical construction have been annexed as a part of this disclosure, and in such drawings,

like characters of reference denote correspondin parts throughout all of the views, of whiclgz+fi .Figure 1 is a to plan view partly in section showing one. eml odiment of this invention. Fig. "2 is an enlarged section through line 22 of Pi 1 showing the construction of the means or rendering the spindle-stop operative or inoperative. Fig. '3 is an end elevation of said means and Fi 4 portrays the formof the spindle-centre rod. Fig. 5 is sectional end elevation of this embodiment as viewed from the rear thereof. Fig. 6 isa dia ramm aticlay-out of the changegears in t eir relation to the table. Fig, 6 shows gears A axiom-transposed. Fig]. 7 is a, plan of the change-gears as assemb ed and relatedwith the trip-mechanism. .Fi ,8 is a detail-of the trip-element used chie y for yielding fast and. slow movements of the table. ig. 9 detail of the tripelement used primarily for, starting and stopping the table, or reversing the table and the spindle. Figs. 10, 11, 12, 13

stopping and 14 diagrammatically illustrate the positionspf the parts, causing the tableto stop, go rapidly, forward, go slowly forward, go

rapidly backward -.and stop, respectively. Fig. .15 is diagrammatic analysis of the gearing transmissionshowing the flow of motion from thejnitial to the final element anrl illustrating graphically the manner in which the vuriousch'anges the direction a and speed are obtainalile.

- sirleruble time is usually, lOSin-l n Continuing nowhy way of a more dc- ,l'uilcd description-of?the shown excmplificut' ion of this invention, it nuy he preliminarily noted that, in machine-tooloperations, conefl'ecting the I contact between thertool and the work. .The

two will ijhlille first instumee he (listancud' npurt unrl to suvetlmc it is-.necessury athut either the tool or the work, as the case may he, shall he moved: to the other-us r: )idl.y as is pruot icill, but thereafter: it-isiuu-cssary that the rate of travel shulilu; rcdlurrd to 5: point r orrcspmuling to the requirements of thernsuin'g.tooling operation. In the case ofu. millingnnurhine.,.for .cxunn'alo, the work isiholtcd to a table that trnvels with rchltion reason of the Jirokm or, interrupted surfilce f. l ",1 ven plccg of work; H'ugjnnc (if-tooling! he rctliu-edpn lhouggregute li thc table other in retutningioverthcfinishcd athe distance-it has 'just traveled 'while outv the tooling movement is' knotvn und the positioning or non tooling moveproviding a time interval sufiicing for thef replacement of the work on the table.

In another instance, the millingoperation may be practically rhythmic, and the-table ma'y reciprocate-fromone-:eXtreme to the such a way zisrto du icateits cycle of movements duringbot-h t e forward and the backward swing As the tooling operation is necessarily of a relatively long dura- M-tion, the attendant may be enabled to clamp another iece of work to the advancing end of the to lo, while the piece is beipg tooled; but'to avoid lossv of time, it is necessary,

. when the table reverses its direction of travel, to cause it to travel rapidly during the half of its stroke (while thc tool is piece'or through and then the speed, of the table mustting-it) he reduced to the degree required for the tooling operations, since the tool is now "about tocstnrt cutting --the last added piece of work,'and so on infsuccessioni will thus be seen that the}tmvelofthe may be resolved into" \vhatai @really p osit1onmg movements and also into-what are Technically. us a feed really feeding movements.-

ment is termed a traverse or u fq-uick- Now thisinvention proposes an arrangement such thut'thc talfle,.'support or carriage for the tool or the work, as' the case may be, may be caused to feed, to position, reverse, or to advance or retreat in any sequence or duration"ofmierations desireil.

'lutni ugfnriw to the mecl'iinical diagram rc -ircscntcd' by Fig. 15;it' -\vil'l he ohserveil 'thutign number of' terminal-elements (of '|lic' :ifuil"=, l, 2, ii ands-4, are in this cxiinl rle shown) are (-onneoted'hy suitable rrmvtgntional nieclmnicnl parts, such as shafts, gears, or the like to impart to or rcceive mo tilt-m from u'pringury source ofpowor which ,wi'll {he practically typified by a pulley, hu iltdn guotory 'or thc'like. i

:"fCmltuin of =thcsc tcrminul-(ilmn'ents; say thosclnulnhorm] "1mm 2, areconnected toil-(r other.terminul 7 termnurl 1,

. totev whenmore theotherterniiiii'rl el'eand is uslup teftl zis through F unease clutches and gearing to receive motion through either one of the other terminals 2, and 4 so, as may be selected as to be driven at a. rate and direction in proportion 5 to the moi ions of the selected one of the .ter-

minals :2, 3 and 4.- Here, liOP-QXHIIIPlB; the (:UllllOOlilUllH" including the clutch C are such as to eli'eet a reversal "in the direction of the motion transmitted thereby so that, lokvhen terminal 7 derives motion from terminal t4, terminal 7 will be'driven in. a direetion contrary to terminal I, but at a-c0n 1 puratively high rateof-speed, which, in this instance, is approximate y' equal to that of terminal 1. 'lerminal 7, however, may be connected with terniir'ml; 6 instead of with lit] 2, and? inthztt-event: it will be a In emu d ect-io s e mi et hu'tat a materiallydifferent-rate, which, in

this instance, is considerably"'Sloiventliafi thatlol tel -initial '1. Moreover, terminal 6, y aw 9f ther erac e of he ansmission, niay (by reason \of .the speed-ehanger B B) be rlrivenat two different slow speedg by motion derived frol'n terminal 3; or it may be driven at we still different elow ral'ce by motion derived froniterminal 4. In this 'instancethe 'earfratios are roughly indirateil by ligures 'onthe-diagram with- When the clutch ("connects terminal 2 with terminal '7, the tranmiaelOn leading from termii'ial 8 will .yield a fastmovement in one (.lirection (say forward.) provided the clutch D connects terminhl 1 with term'inel 8-; while the tillillSIlilSliitill willyield contrary movement (Say baekward) provided the clutch l) (mnneeteterminal 7- with terminal-8., I l f, howe\;'er, clulyeh C ishiftedi toconnect terminal 7'with termim 6;, then the trimsmission from terminal will yield gwslow forward movement who 'elutch l) connects tern iinalii with termimt in a. very V in Fronitern inal f8 beineused turn an nnati- ,itneuing e' e e D afically yielding alternate fast mrd v peeds i'providing another able tr p cont V l sl w-n otion pojs iolnj Ittliisdaet nlelition trip has movedclutch i into its other position then will the tnble'iexecute .fast forward and fasthackward movements when tl'ie first mentioned trip is oscillated. 'lhefpreferredpractical embodiment of this invention may now be more specifically def scribed. v

Thi machine :embodies' a frame-unit E reference to terminal 4, which taken at.

illing- "elutchn C which, in this instance, is stationary, and

which eerries the weight of a table X,whi,eh here is adapted toreciprocate. One or more frame-units, Such ash and G; are adj ustably connected with the fremeunit E and carry Frame-units H and I, which are vertically adjustable and carry the spindles Y and Z, which here are arranged in=coaxial relation on opposite sides of the reciprocating table. In this way the spindles may be adjusted with relation to the tubleiX.

The prime-mover ishere indicated by I and assumes the form of a pulley adapted to be driven by a belt fromn counter-sl-mft, and which is nornmlly free from the spindle Y, but is adapted to be clutehed thereto; and it provides a gear forming at pert of theqtrimsniiseion conveying motion to the reciprocating table. I This transmission, may".efemiiee, assii'hie varion's formls, but, in this instanee, it comprehends (see Fi i. 5) a ml nber of WH -gears P, P and P" l lad ing in series rem-gear P andactuating a shaft fixed to bevel gear P. These spurgears arejournaled in the frame F which is adjustable along the bed E; and toprovide for sue-h. lIl'OtlOlLtllQ gem-'1 is splined to, the eaid shaft; A bevel I meshes with P and is'fast (see Fig. '1) on shaft Pfl and from this shaft (divers'branch-lin trans miseions (see Fig.0) lead up to. the termi nal members 1-, 2, 3 and 4,. Thus,.the end of this shaft terminates inn boss.provided with a? key. (s e F g-.6) nd at d by and this o1: projeetion acts itself ee a terminalj er, and "i hi nst ute enmn to n iiihuTy-M tlQn with the. s a t jaeent this projection i enother 'similar projection indicated by Bifwhich serves as a slow-speed terminal member, and it derives motion from thes'hafti 1 bye branch line transmission or train gearingincluding the part 1", which drivestlie en r P-P, \vhieh n s. qd it iggtaeeo li uclil ke,

transmissionsare. eueh 'that tenminali 1 r r v as the h ghest speed; term nal 2 about the same as 1,"be1ng slightly less: terminal 3 having but a fraction. of'the speed of nmn her i, say abo it one-tenth as much; and term nal 4 hev ng several tunes; the speed meshing two gears con i speed.

- in the. closely mliaeent groove (:SlLQAVn host Irv Fig. 5. lhes'o trip "elements; together with .theirdogs, ll'lilx llt;

.gaged with (lie-terminal of terminal 3, say about six times as much. Terminals 3 ands, as best shown by the dialgram (Fig. 15),vare used'for delivering motion to terminal 6, and, in this instance, the connection between-6 and these terminals provides a reduction in speed involving furthermore a l plurality of changes of similar to terminal 4,

small pinion-gear .cut in said shaft, and which meshes with a comparatively large spur-gear B" whiclnthrough a yielding connection similar to that already described, drives the terminal (3, This, therefore,

.fOl'll'ls a transmissionwhich will, ;of course,

rei'luee tlies )eed of whatever motion may be oht'ainedirtnn terminals 3 and 'lheT irap between 5 and the two tern'iin'als 3 and -l: 'lsclosed liy a large spur-gear l'\ ii siniil ai" "LXF'L'H 'l heso nan; 111i eh Mm ay. 1e mood in position so that u'uitiiiilly into] the n'rotion tln ioliglilA t first-and then loArHor-firon first and then to A dependi ng-upon whether the large' or the small gear is directly en-' in addition to the speed-changes" invtiliret-l by this retriprocal: change, either otthesie gears may he engagcrh with either the =terrnimds 3 01-4 depending! liponwhethewthcy "are trans posed. rilhatls i'ofsay; both if these gears' Al and 1V li'are -a her-way 1/ and (I? located on om-i -siile of the "middle plane of the. huh'of -'()u the'otlwrside Is an enlarged the gear, bore. (,onsi' qu'entlyf it', the-geay-A he in the position shown hy Fig. ii the,kejiqvai u," will interlitjfwilh the te'nninall lug 3', whereas iti-twhe' turned arolunhas shown will engage only w'itlrthejllig if By means of this simple arrangement, the useijot a machine is enabled to secure four difierentsptaals snnply hy ad ustmg the position of.

these two" gears. and; in that way gain the practicaleffect of a far more costly and elaborate speeil change de'viee.

"ll ie automatic meelmnism. for shifting these elutehmemhers l) nd C to determine the character of motion transmitted to the table. ,eou' plrhends two trip elen'ients I) 'l which are located :uljaeent" and (3" (191"; v thelongitud inal edge of tho tublp and m are 'adapted loho actuated hvdiars: 'adjnsk able in' the upper groove-"'- and the lower as disclosed in patents to -1\d.( il 'ili 'L.

eonstruetek I- precisely [lnrted SI ates Leenw, Nos.

Thuss .artin with the terminal 5,' which in structure 1s I the motion flows through a shaft B'to a very may he caused to} How ei1 her figure (IF-M96"), it

table; I tlrereif'o'rd need not he "here deserlhed in tail. It all SllfliOB to state that the dogs may beset so as to-impact the longer pin (1 (Fig. 8') and the shorter pin d of the in succession so as to osciltrip-element D late it from one position to another, and another dog located in the groove 0 may im. pact the pine and shift the other trip 7 member C out of the-position in which it had previously been set by hand. These tablefso thatithese actions may be timedto take place -in any desiredsequence.

Arranged within the casing supporting these parts, are two clinch-operating levers, together with certain connecting element-s,

three typesofdogs are adjustable along the whereby either one or both of these levers Y may be shifted by reason of the action of the dogs. This is shown best by Figs 8 and 9. Dealingfirst with the mechanism for shifting the. clutch Dvso asito yield fast and slow forward movement's to'thetable Q, (assuming, the clutch b--mesh-ing--witlr the terminal 6), it is noted that the shaft d (Fig;13');eari;ies apart (it having two V- sl1aped1'etamses d'" amid (Fig-.17) separated hva spur (IL A clutch shifting lverD is pivoted about tlic axis d. A sp'ringD? exerts pressure on theplever I) so as to keep' the with the part kl, and these parts are so pro oi-tionedtliat when the, spur d? rests in the notchd, theoluteh D will engage with the terminal 7, whereas .if-the spur a should oc-' 9, andprovides a, spur spur (1 in engagementcilpytheothernoteh (i then will the clutch l) interlock withthe tern'linal 1.v In the for: .mer ease, the tablewvi'll bedrive'nforwardly at a slow rate (Fig; 12). and in'the latter ease (Fig. at i fastrate forwardly, providing the clutch member C be interlocked with t-heterminal 6. Itis apparent that'thedogs may swing't-heItrip element; D so as to cause "the parts to assume eithci posit-ion' and that 1 this shiftin iiiayhbobd o without,'shi ting the ellitch Considering no element Q'kit no v that the shaft 0 thereof" alsoearris a part igc these notches are adagted to receive-a spur r" in a second level: 5, which is'also held by means of'i spring C with its spur seated against the part. c.-

Fig. 7) the other trip I providing-two notches e andp separated'hy a-spur o'y'andt By lockingtheishaft c, it is, therefore, apparentthatflthe clutch.

C'Fnujybe interlocked in; I

I} with ei'iher the terminals 2hr firtherchy proinlerioolwd with the terminal 7. then will thelo e'kingof lheehi'tehC, with the terminal-,2-

' fast 'haekward motion of the a slow forward motion if c be' locked with (i. Or also, if D be locked .with

produce a duringaiieil'eet dependent; upon the position of the eluteh D. Thus; if the clutch D be 1.2mm a 1, then the tablp will have a fast forward the movement, and the bends indicate the motion irrespective of the position of clutch reversals in movement.

O; and if clutch D be free from'boith termi- A nals 1 and 7, thenwill the table "stop irrey 3 5 spectivoo'f the positions of the clutch C. B i The clutch D can be maintained and-hold .in its wholly (lii-scon'noctecl Fositionwhen the a P parts are in tho position SJQWII by; Figs, O )stop 70 and'14, or in largor detail by Fig. 7. This op I 10 position is produced by the impact of a, (log D .i.-..

oalrrilerl by the tag-1e angljfflhe operatioln if 5 i w iici is to cause t -,e sha to" to rotnte'c 'oc wise so l:is to shift the spun a into the notch E 75 c and, y means ofjhc lost motion strap 10, H to film To shaft (1 clockwise to an extent F only suflic-ientto Cause the spur II," to ride G i part way up the spur (I? to occupy the posi- Hon-shown by Fig, 7. This will causoflie p i 8 lover D'? to momr the clntohwD into its en H tziroly disconnected"position, and "this position will be maintnine'd' by reason of the mutual opposition of the spbing C, and. I). flhis will; oioonrs, cause the muohino to i 35 sto New, if-thgxpul t 'CQbJe' turn (If im'an- 0 Hal 3/ anti-clookwiigi tho spur 0" will he I shimaamo tl'xenotch 6-2,. ml um mm 0* will be moved to cause the part C to inter m'fiwn'nm loirk with t'lib tnrminal 6. Tho link 10 will "'f') 90 then he permit-tedto-nio ve to vride sliflicie'n'bly i to permit thespur'rl" to rlmp'in the notch fl,

thus bringing thoparts in the position'rop- J o f v 1 resented by Fig. 111;,- (rorres onding to-a fast d) #f forward tl gi-versgofthc (ah -o. I 5 1 i I i 1 95 i A 110;; m ay thfihflffllllififid; to impaottho a -'--v----- part1) and turn it clockwise to b'r'ing the 4 i r (1" into tho 'notoh (1" mid thus 'soxmow tolm-ioriD. 51stoiocktheaolntohD'with thei y terminal 7: thereby :ittai mg the position K -'-'=-*-*)-9--*-+"--' 100 shown by Fig 1 211116 yii jn gais lo'y'v'fon' ward. movement, orswca-llod feed of the i H o table. If new ho $3.11" toimpaot the i part. (1" alnrll m' 1f olookwiu sov that the; r i spur c -"wlil'lj'fies l fionotoh 'tihon Willi-ho -4----'et o. 105 UlllilZCh (3 be .sh over into-engagement L with the germinal; 2, and the position shown by Fig. 13 will result, anda fastbaokw-ardr v movvimenti will our, i. r +H'IM K T)- 11 inm v -'j3 h.) gd rho otlilob g t H 1' 0 ei ng wthef j e I ii tho so viii 1)v wgffifaiiflfemi" in nny onb by, causin Among the other things achieved by this invention, one of the more important is the instrumentality whereby the spindle is stopped from rotating at the end of the advanced stroke of the table so that, during the return stroke, the operator may not" be injured and the work may. not be marred by action of the cutter. Also, the arrangement is such that the feed will not be drawn into action unless the spindle is also set in motion. This arrangement comprehends a connection extending from the hand-operable tri element 0 to a clutch whichconnects an disconnects the spindle from the prime mover. In this case the s indie derives its motion from a shaft 11 (Fig. 1) throu h the cars 12, 13, 14, 15, 16 and 17' whic are oused in a casing 18 which is adjustably bolted to the frame units F and G, respectively so as to ermit a raising and lowerof the spindle supporting unit- H. The spindle Y directly cu-rries'the gear 17 which is maintained in ro er mesh with the gear 16 by means of a inl: or strap 19 connected with the shaft 20 which is carried by an arm 21 adapted to swing about the axis of a shaft 11. the shaft 11 andthe pulley P-is established the rockers 22 to swing until sufli'cient' riction' occurs between their fin-v gers; 23and. the collar 24in thercbetween. This is-produced by Shi ting a circular wedge 25 so that its conical right.-

hand raceway crowdsunder the collars on the outer end-S of the levers 22 and lifts them in the necessary direction. The conical wedge 25 is splined to the shaft 11, and this housing action may beobtained by manually operating the hand lever 26 which is provided with a fork 27 to shift the part 25.

The way in "which the trip el'ement 'C" may disconnect this clutch will now be ex- 'ilained. By turning to Fig.7, it will be perceived that an arm T? extends'from a shaft fiend terminates in gear teeth, and corresponding'teeth K are c'ut. in oneside of the push-rod K which extends forwardly and is )rovided (see Fi 4) with a narrow notch l adjacent its notch connects the rod K with 'a pin in the lower end of an arm Ldepend'ing from a rock shaft L. This shaft also carries an uprising urni L-' which engages (Figs 2 and 5) with a horizontal arm' 28 secured to the lower end of the shaft of the control lever 26. When a doghits the part- C" through this arrangement, the conical clutch or wedge. 25 will moved to the left until its conical side 29- cqmcs home against a stationary conical surface 30 whereupon a braking effect will result and the s indle will be stopped quickly. Conversel by teeth K and li A driving connection between 1 prevent slip ing feeding said power-driven means *enable the direction of travel of said support tion without setting orward end, which swinging the hand lever 26' the spindle may again be started andthe table may simu taneously be caused to feed through an actuation of the clutch D. It may be observed that the auxiliary spindle Z will have its action controlled by a connection from the shaft L, similar to that used for the s indle Y, and, therefore, .a descri tion 0? this duplicated construction nee not be repeated.

.For certain uses it may not be desirable to have the spindle stopped automatically whenever thetable is reversed,- and, therefore, the connection is formed in such a manner that it ma easily be rendered-inoperative. .Thus, tie rod K has a fiat surface K at an an le of ninety degrees to the l ewise it provides'an elongated slot K adjacent the slot' K By removing the cover plate normally concealing the arm L accesswill be had to the end of the shaft K so turned slightly and the pin on the arm L be caused to occupy the elongated slot K. This will provide sufiicient 'lost-motionso that the spindlewill not be automatically stopped when the part C is actuated by this dog. j

Having. thus revealed this invention we claim as new and desireto secure the foll ing combinationsof elements, or equivalents thereof, by Letters Patent! of the United States:-,

'1. A control-system of the nature disclosed combining, a traveling support; a cutter spindle; power-driven means for simultaneouslyhrotating vsaid spindle and slowly support in a direction trans verse to. the axis of said cutter-spindle; and a purely mechanical means cooperative at a predetermined station in the travel of said support automatically to disconnect said om said spindle and to be reversed to return-it to its initial 'posisaid' spindle in motion. 2. A control-system of the nature disclosed combining a traveling support; a spindleg-a power-dr1ven means for simultaneously ro-qow- L that it-may be tating said spindle and slowly feeding said suppontg'a mechanical; connection ada ted to feed sald support rapidly mechanica means operative at a. predetermined station in the travel of said support automatically to disengage said power-driven means from both said-spindle and said support, and for then establishing a propelling relation between said mechanical connection and said support whereby said su port will return to its initial position wh le said spindle is idle.

. 3; .A control-system of-the nature disclosed I combining a" traveling support; a revolving mam Spindle a power-driven means for actuating:

said support; mechanical trip mechanism oneratit'e meehanieall ate predetermined station-1n the travel 0 said support to automatically disconnect said power driven means from said spindle'to cause it to sta and means enabling, said support to be retreated ivhile said spindle remains idle.

5. control-system of'the nature disclosed combining a rotary cutter spindle; a workl in a d d'i'ii' "Yen it a. n tanmuh. ,YJK)? 1d spindle and slow y advancing port; mechanical trip mechanism t P til-lnratn'e mmzhameally at a predetermined station in the travel of said support to auto matioal ly (liscmnmot said, power (.li'iY-en means from said spindle to cause it, to stop; and means :mtmmiliually causing said sup port to in: retroalwl at a iitliqk lii vel'se tale \\'l-|i|esaiil spindle is idle.

t3. (routro|'-system of, the nature dis closed roniliining a rotary cutterspindleya work support adapted to trai ol in a direclion: transverse to the axis of said (glitter spindle; power driven means for simttl-tane misty rotating said spimlh: and slow adranviw sai support; lrllliltllllV- Li trip iiln-rlunnslj it"Want rnir lmniealiyat re i hlurl j in'd slal'h n the travel olhsai port in antomalnntll i' (iiS'FfllillltIt, said driven means from saidsplndle lo.

relation \\'l'l h change withi s third t lie driven by power (lei said third ling mechanism eluteli means-for eonneeting said n'ieclmnism with either said first or uid second terminatmember; andnn auxiliary elutoh-adwptedr to eonneet said fourth a fourth term-inafi member; a table propelk terminal member with eitheii'saidseeond or I'min-al members.

92 A in ehinetoul eontrol' combining a powerdriven part; to terminal members, 1:, 2,: 3* and: L aparfeonnectiedvwith said-garb rotate di at s was; a fifth terminal member fi Ina 0J1!) e-meehanjsm adapted toconnnot's 1 fift member at, a dill ent speed ratio with either said bird or said fourth terminal amtable propel-ling mechanism and meanswherehy itinay be driven by-po-wer trans mitteil through either'said first said set:- ond or said fifth-terminal member.

10. A machine tool control combining two ro-axinlly arranged members; a transmitting element. adapted to he inturehal'igmi in [)OSIUOII} to engage either one the other (if'said meniliers; a tool siii); ..=-rting part anda work supporting part; int-.1 means for transmitting motion to one of said parts through said transmitting element. 11. A machine tool control oombinin three tan-axially arranged members, one 0 said 'i'nembers being co-axjiaily transposable so as to he. released from the one and engaged with {ha other element; supports for atool a-n'd for-work; and means for utiliz- I tran's 'iosahle element in actuating airp rt 1?: A-i amine tool combining two nonemtri'e inomiiers; a first gear transposable in (-o-axial-relation tlwrewith sofas to be engaged by either one or the other thereof;- a

rotatable part spared away from said metre Ii -rs; a si-eond gear in. detarlndile engagement iyijth said part, said two gears being,

hm mg a- 1. pan-of eo-ax-ialiy ar. nggd spindles; an adjacent y table adapted to reci 'irocale transversely to the axis thereof; mechanism for propelling: said table and sinmltam-ously rotating both of said spindle; and a hand oporatwl control adapted to stop the rotation of both of said spindles without disturbing the normal action of said table.

-n witness whereof, we hereunto subscribe our names. as attested by the two subscribing \Vii'IH'SHtH.

ROBERT '1, HAZEI/FON. LE. "FIG R, I" NI'IXNINGER. W it lHfiHLH.

Hon. EINSTEIN. H. 5, Manama.

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