US1899694A - Brush machine - Google Patents

Description

Feb@ -28, 1933.

C. JOBST BRUSH MACHINE Filed Sept. 2, 1930 4 Sheets-Sheet l BY fmm ALM rmwM-M,

ATTORN EY'S Feb. 28, 1933. C, JQBST .1,899,694

BRUSH MACHINE m "chg,

Q INVENTQR @ma .Z .z/:Zs

ATTORNEYS Feb. 29,119.93..v I c. 'JOBST 1,899,694

BRUSH MACHINE Filed sept. 2, 1930 4 sheets-sheet s we Wfl/lfm" INVENTCR (mma ffs M22-...mmm f 7W@ ATTORN EY'S Feb./' 28. 1933.

C. J OBST BRUSH MACHINE Filed sept. 2. 1930 4 Sheets-Sheet 4 INVENTOH ATroRNEY Patented Feb. 28, 1933 Y ED STA ePrice YCONRAD JoBsT, OF TOLEDO, OHIO, AssIGNoRfTOT-'HE TOLEDO AUTOMATIcfDnU-SH `1\:Ae1111\mCOMPANY, OF TOLEDO, OHIO, A CORDOBATIONOFTOHIO BRUSH MAeHIN-E Application mea septemberfa, i930. ,senat :165479,3'72.

The invention. relates to brush machines :tuft settingnezle tvillf alwaysdeliverthek and more particularly to machines for formtutt' intoithejho-le previously bored 2inthe ing brushes having closely spaced bristle tufts back. j

. mounted in thin backs such for instance as The co'nstru-ctienxef each `of 'the drilling,

5 tooth brushes. It is the object ofthelinventuftfsetti ng7 and trimmingmeclian'isms per. .55

tion to automatically complete the brush after se 'is rieti essential to the preseritzinventin a single setting of the back or handle. This which is adaptedffor u sewith any. suitable necessitates the Vdrilling ofthe hfoles for recombination of such mechanisms.arrangedin ceiving the tufts, the setting ofthe tufts operative relation' to my improvedwrk hord- 310 therein and the trimming of the bristles to ing and feeding unit, and the invention there- W any Vdesired contour, both longitudinally and 'fore consists. in tl'iefnovelf construction, farf 'transversely of the back, all of said vope'rarangement Yand combination ofparts constitions being performed automatically 'in tutingthisv unit as hereinaftersetforth.

proper sequence. Y y1n the drawings: l 23315 In the development of the art machines Figure I is va4 vertical central section 65 have been devised in which the boring ofe'ne 'through the machine; f brush back and the setting of tuftsin a pre- Figure la is ase'ctiOnal detailed-view of a viously bored back are'simultaneously Vac portinofFigurefh v complished. Machines of this type When Figure 2 isa plan viewipartly insectin; [3320 used formanufacturing brushes with cellu- Figure y3 iis `an end e.levati'oli;v 70

loid backs were limited in speed by the length .Figure 4 is a vertical section on Vline 4 4.- 'i of the time interval required Ofor boring ofFigur'eQ; Aeach hole in such'material. In further de- Figure Ela/is *an'elevation vievv'etiatfri'ght velopment of the art, advance'in the speed anglesto:Figure''shovviiigfthefexigagnnt 15325 of forming and lsetting the tufts'rendere'dl it ofjntlier roller with thestepped cam; 75

desirable to segregate the boring and tuft 'Fi'gure'is an;elevation:shoyvirigineansjfor setting operations, inasmuch as the speedof engaging `and releasing "the ybrush back the latter must necessarily be limited bythat clalfnps;` of the former. However, with improvement .Figure 6 isan elevation partly in section of fj 15; 30 in materials for drills it has become possible the mens'contilliig the rotative'llovl'ent ,80

to increase the speed of the drilling operaofthefdrum;

tion so as to equal that of the tutt setting Figur Z is a sectional 'elevation vat mechanism, but to successfully operate 'at 'angles'to:Figuret;` such high rate of speed requires eXtreme ae- FigureS is ,avertical section through the ggg 35 curacy in registration. controllingvvalvemand h i The present invention comprises` essentially Figure ,91 isf an end elevatien;` thereof. a construction of Work holding and feeding `.Generally described, fniy improved A'niaunit With which brush backs may be easily Chine comprises a 'rotary" an`d axially engaged and by which these'backs are vsuc- Vable'druin lizwingv secure'dfto'theperiphery 53:40 cessivelypresented to the drilling, the tuft 'thereof arserieszof fb'rushback 'hO'ldersto- 9o setting and the trimming units and with such gfetliei'H with ,clamping faud releasing "nieiins extreme accuracy of registration as to permit perinittingoftheintrar iictiln; anilr nival of operating at a very high rate ofspeed. ofthe Work, VThis 'is irotatively The construction is also one which is adapted i'nount'edV on aninnfer holl'oyv'f `me lIiieifiljier 45 for use withbrush backs of various shapes 2 Whi'ehfhas itslup'perjed "arecessf''vvith 95 and kdesigns, such as either plain or curved 'the 'ball b'eafringsitjand'jlocated therein.

y faces and with the tufts set either inl straight` ,The drumil liasatop' head vitiia eli v4parallel rows or otherwise'distributed.' `Vith ing "TOr engaging fsaillballjbearlngs 4 every adjustment of this kind there willlbe 'land 5. Intermediatef'tlie diuin land 'the gig; 50 the same 'accuracy of registration'so that the frame Q .isan annular-framedvvlii'cli has: dis- V100 respect to the frame 8 and a frictionlessV Yrotary'movement of the drum lwith respect to the frames2'and 8.

yThe frame 8 has a shelf portion 8a which is horizontally adjustably mounted Aonr` a member 13 which is in fixed4v relationy to the drilling, tuft setting 'and trimming units (not shown). To permit of such adjustment the frame 8: and member 13 are provided with 'registering racewaysV 14 and 15 with ballsl ,lltherebetweem so that the movement is l'comparatively frictionless. Journaled upon the. frame 8 andbetween thesame and the A.druml 1 is a rotary cam carrier 17 which has securedthereto an annular bevel gear 18 .intermeshing with a bevel pinion 19 on a shaft v2O. This shaft isdriven through the ,medium yof changev gears ,21 from a parallel shaft 22 which A:orturn is driven throi'igh bevei gear wheels 23 from a -power shaft 24.v` A.V vertical shaft 25 is also vdriven from this power shaft through the bevel gearfwheel,

26 to which it is splinediso as to permit of axial'fmovement in relationV thereto. The

lower end of the shaft 25 is coupled by bevel4 gear wheels 27 with horizontal shaft 28 mounted on a ,lateral Vextension 29 of the frame 2. A shaft 30 isV axially aligned 'with the shaft 28 and between these shafts is a friction coupling 31 through which a limited i torque lis .transmittedv from the shaft 28 to 32 which :extendsupward between the framev the shaft 30. The shaft 3Q is connected by bevel gear wheels 31with a vertical shaft 2 and the frame Sand has at its upper end a`v pinion v33j in mesh with. a ring gear 34 securedto the under `'side'of `the head 6- of the drum 1. The Varrangement is such that the rotary motion ofthe power shaft 24 is I communicated through Vthe'shafts 25, 28, 30`

and327 pinionl 33 and ring gear 34 to impart a rotary motion to the drum `1 which, however, is not positive as the friction clutch 3 1 willfpermit of arresting' movementof thel drum as will be hereinafter explained. The

f power shaft' 24 also drives the cam carrier 17 thi ough the medium of the vbevelgears23, .shaftl 22, change gears'f21, shaft 2Q, .bevel if pinion 19 and ring gear 18', the rotation of said cam'carrierf being properly" timed by `fthe change vgearsto correspond to the parv'f 'upper enda stepped cam 35 engaging a rollticula'r` character of vwork tobe performed.

Thel cam carrierY 171 has mounted lo n its #er 36` mounted -on a radial extension 37`of the frame 2 which-extension passes through aslot 38 in theframe 8.v The steps on this cam are lin. ascending and descending series `carrier 17 has mounted thereon a seriespoi correspondingto the several rows of tufts and the number of individual tufts in each row. If the number of rows in each brush back is odd, then the cam is provided with at least double that. number of ascending and descending portions, so that after a compiete cycle the starting point will be in the vsame position.

' -In addition to the stepped cam 3 5 the cam peripheral cams for performing various functions. One of these cams 36?l is adapted to cooperate with a rollerfbearing 37a on an arm-38EL extending from the stationary frame 13. The purpose of this cam is to move the frame8 and all of the parts mounted thereon in relation to the fixed frame and the drilling, tuft setting and trimming units, in case. the brush back has a curved instead of a pla-in face. On the other hand, where the brush `back is flat the cam 36 may be concentric with the aXis of the drum so as to impart no movement to the frame 8 relative to the frame 13. A. rod 39 and spring 40 forms a yieldable con-y nection between the vframe 8 and' armk 38B; thereby holding the cam 36 constantly bearingagainst the roller 37.

The stepped cam in cooperationwith the roller 36 will intermittently raise and` lower the frame 2 but willhave no effect upon rotary-movement of the drum l. This rotary movement as previously described is comn iunicated to the drum by the pinion 33 engaging the ring gear 34, but the driving is not positive due to the friction coupling 31 between the shafts 28 and 30. To hold the drum from rotation against this yielding drive it is provided near its lower'end with an. exchangeable ringv 41 having an outwardly` eXp-1 tending flange 42 provided vwithspaced notches 43, corresponding to the spacing of the several rows of tufts in each brush and the spacing between adjacent brushes. This ring 41 may be exchanged for another whenever the number of rows of tufts in the brushes operated upon is changed.y The ynotches 43 are successively engaged by aver- `.tical V-shaned guide member 44 which is of a length greater than the vertical movements ofthe drum and is intermittently radially Withdrawn to permit the rotation of said drum under the actuation of its friction drive.

' Such radial withdrawal is timed by the operation of trip members 45 suitably rotatively spaced around the cam carrier 17 andv cooperating with mechanism constructed as follows:

The guide 44 is mounted upon a bifnrcated` Y arm. 4G which is pivotally rconnected by the shaft 47 with a bifurcatedlever arm48 fulcrumed upon a vertical pivot shaft or4 post 49 mountedon the shelf 8a. On this same pivot shaft 49 is fulcrumed an arm 50 which extends into` proximity to the varm 46 and bears against an adjustable stop 51 on said arm.' A spring 52 engaging a bell crank arm 53' connected to the arm 46 and anchored to a post 52a serves to' yield'ably hold the guide notch 43'. The arm 50 is almostinstaiitly rev Vleased by the passage of the member beyond the member so that the guide 44 will again be' moved inward by the tension of the spring 52. However, in this brief interval suiicient movement will be' imparted to the steps the drilling and tuft sett-ing mecha drum 1 to pass from one notch 43' into registration with another.

As just described, the guide 44 will hold the drum from rotation during its upward or downward step by step-movement actuated by the stepped cam 35. At each of the nisms will operate to respectively drilla'hole in a brush back and toset aV tuft in the corresponding hole of a previouslyl bored back. Also by properly positioning the trips 45 the guide 44 is Withdrawn at the completion of each row of holes and tufts to be?engagedV with the iiextjnotch 43 in whichy positionthe drilling and'tuft setting mechanisms successively operate upon another row. Thus the'tWo rows will be exactly parallelv to each other and consequently the tufts in each row WillV be'spaced a uniform distance apart. It is, however, frequently desirable to have the rows of tufts non-parallel, which vI accomplish in the following manner.

It has been stated that the arm 46 is piv- 'otall}7 connected to a lever 48 which is fulcrumed upon the pivot 'shaft' 49. At the opposite end of this lever 4S'is a roller 57 which bears against a cam 58 on the' cam carrier 17.

The camV 58 is so fashioned as to gradually rock the' lever 48 on its fulcrum 49 and in' so doing` move the pivot 47 to which the arm 46 is attached. This will changethe position of the guide 44 so that the drum 1 instead'l of being held from rotation is permitted to slightly'rotatea-nd thus tochaiige the path ofthe british backs operated upon from an exact vertical line to' van inclined orcurvedI line. This path can be exactly predetermined by properly fashioningthe cam 58 so that any desired inclination or curvaturecan be given to the rows without the necessity of changing f the` guide 44.'

In the lmamifacture of brush backsffroni materials such as celluloid it yhas been found impractical to hold theseV backs to exact di' mensions, .particularly `as to thickness. .'Iherefore, if the brushbaok is positioned in its holder' by the back side, the .front side which is= operated upon bythe drilling and tuft" settiiig mechanisms may vary in ,posi-'f tion* according to thethickness of the indiv-idiiaflv backs.

Tov `avoid the inaccuracy which would result from this variation, I have deviseda` construction where each back is positioned' in relation to its front lor boredv andtuftedl face, instead of'being located by the rear face. It is however, veryessential that the backfshould be rigidly held during thedrilling and tuftingoperations, particu-` larly against the impact ofthe driver which` sets' the' tuftsv so that the IHOUHUS in :the

' holder can not be of a yielding nature. This I' have accomplished by a holder 'of the following construction: Y

width somewhat greater than the width of the brush back and which have at their outer `ends flanges 60 Vwhich slightly overlap the back. Inl each of these channels is a floati ing wedge member 61 which hasat its lower end a laterally extending finger 62 extending beneath the channel portion of the member 59 and between t-he same and an annular flange 63, thereby holding said wedge member fromJ disengagement but permitting itto move radially in the channel. 64 is a cooperating wedge member which is oppositely tapered and fis located in rear of the wedg'e` member 61. wedge 64 has a radially inwardly extending flange 65'which at certain points inthe movement of the' drum 1 will come into registration with an actuating member. As shownI in1 Figure 2 there' are two of these actuating' members 66 and 67 located adjacent to different Vpoints, in the orbit of the drum and vrespectively operatingV to press the wedge member 64- downward for clamping the brush back and to lift said wedge member to re' leasethe back., As specifically shown, the actuafto'rs66 and 67are pneumatically operated andfrfe'ceive the' operating air through conduitis 68wl'i'ich connect with conduits 69 andi'4 7 0: concentrically arranged and passing through the center of the drum 1. The lower ends ofthe conduits 69 and 70 are connected toa vallfvehousiiig 71 byY flexible conduits 71id locatedfon the frame 8 in a position to bein operative relation to a pair of cams 72 and 73on the'cam carrier 17. The arrangement is such Tthat during the revolution of Lthe cam carrier 1:7 the cams 72 and78l will at certa-in points' actuate the valves in thel housing 71`s'o as toadm'itor'exhaust air from the fpneumaticjac'tuators 66 and' 67. This will causethedepression of the wedge membe1""6`4 by one of these actuators and the lift Iing and withdrawalof saidwedge member bythe other of said actuators. Thus assum The upper end of the Secured to the periphery ofthe drum l are- 'the' channeledE holders 59 which are of a stem 84 sleeved on the stem 82. The cams 7 2y `drum the flange 65 registers with the operator 66 the cam 72 will simultaneously actuate valves in the valve casing 71. so as to cause said actuator to press the wedgek 64 downward moving outward the floating wedge 61 and tightly clamping the brush back against the flange 60. The angle of the wedges is such as to be within the angle of friction, so that when once clamped the wedgesremain in this position until again actuated for releasing. The contacting surfaces are also non-parallel as for instance by convexing the surface of the member (S1-so that the point of bearing is intermediate the ends. Thus the surface of themember 61 which bears against the brushl back will automatically adjust itself angularly Vvto distribute the pressure. The release of the clamp is accomplished by the operator 67 at the time in the rotation of the drum when the flange 65 comes into registration therewith.

The pneumatic motors and the actuators 66 and 67 may be of any suitable construction but as shown comprise a piston 73 in a cylinder 74 normally held in raised position by a light spring 7 5. A plunger 76 is held in guides 77 to extend parallel to the piston and cylinder and is provided with an inwardlyl extending-lug 78 for engagingr the piston and an outwardly extending lug 79 kfor engaging the flange 65 of the wedge 64, The actuators 66 and 67 are substantially the same in construction but with their cylinders and pistons reversed Aand with the lug 79 of the actuator 66 above the flange 65 of the wedge and the lug 79 of the actuator 67 beneath the flange 65. These actuators may besupported on an arm or plate80 which extends radially from the outer tubular member 8Oa forming the conduit 70.

The valves in the casing 71 may be of any suitable construction but as shown two pairs of valves arranged one above the other, each and 73 on the carrier 17 directly engage pivoted rock arms and 86 which are arranged to respectively engage the plunger 82 and the tubular plunger 84. In this way each of the valves 83 and 81 can be independently actuated and timed and the arrangement is such that pressure air is admitted to the cylinder by one and exhausted by theother.

On the left hand side of Figure 1v a holder 59a is shown which is the same as the holder 59 but longitudinally curved `instead of being straight. This same curvature is in the flanges 60 and floating wedge 61 so that alongitudinally curved brush back may be insert- .ed and held therein. t is to be understood that the construction shown at 59a is an alternative for the construction of 59, the two not being used on the drum at the same time.

Operation vIn the operationof the machine it will be understood that the drilling mechanism, tuft setting mechanism and trimming mechanism are arranged in positions about the drum l to` be in operative relation to the brush backs in the holders 59 betweenthe' points of `clamping by the operator 66 and releasing by the operator 67. It will also be understood that these several mechanisms'are properly timedV ticular brushes to be formed and mounted on said carrier, and the change gears having also been properly selected, the machine is ready for operation. Motion derived from the shaft 24 will be simultaneously transmitted to the friction drive for rotating the drum 1 and to the cam carrier 17. The drum 1 will, however, be held from rotation `by the engagement of the guide 44 with one of thev notches 43 excepting during the periodic operation of the tripl 45. This disengages the guide 44 and as the friction coupling 31 is in constant rotation it would 'quickly overcome the inertia of the drum and impart ro-'- tary motion to the same. However, the interval inwhich the guide 44 is withdrawn is so brief that it will re-engage the nextsucceeding notch 43 and will arrest further movementof the drum. In each engagement between the guide 44 and a particular notch V43v the stepped cam 35 vwill successively raise or lower the frame 2 and the drum 1 mounted thereon and at each step a drilling and tuft setting operation will be performed. The exact location of each tuft is determined by the combined action of the guide 44 incooperation with the notch 43 and by the cam 58 in cooperation with the lever 48. Inasmuch, however, as the controlling cams are in the same position relative to the cooperating mechanism when the tufts are being set as when the holes are being drilled, the registrationwill be exact and therefore .a high speed of operation is possible.

For feeding the machine, the attendant successively places the brush backs in the holders 59 in advance of the point where the operator'66 tightens the wedges and to which position the lfloating wedge-61 is freely movleaaee able. The same attendant `can remove the completed brushes from apoint beyondor after the operation of the woperator 67 where the wedge 64 has been again released. In-` termediate these two points the back is held rigid and has its front .face exactly located by contact with the flanges 60 so thatl there can `be no variation either in the `depth of the holes bored or the depth of insertion of Ythe tufts therein. `This is of great importance :both in' the vjcost of the product produced and 4in permitting the operation of the :machine at high speed. It is equally imd -portant that the holding of the brushn back Ishould be rigid during the operation which is accomplished by the unyielding pressure of thecooper'ating wedges 6l and 64. .A

What I claim as my invention is: 4

li In a brush machine, the combination of la work carrier, a series of work holders 'mounted on said carrier adapted for the free insertion of the brush, backs therein and the free withdrawal of the brushes when completed at spacedpoints vin the cycle, a locating :bearing for accurately `positioning the front face of the brush back in said holder and means for rigidly clamping and holding the brush backs in said holders against said face .intermediate said points.A d

backs may be Vfreelyl inserted i and` from :which completed brushes maybe freely withdrawn at certain points in the cycle, each of said holders comprising a recessed Vmember hav ing a locating face against which thel front face of the `back bears, a follower forengag-` ing the rear face of .the brush back', .and a wedgefor cooperating with said follower,- and 'means 'located betweenl said 'pointsy in the cycle for actuating ithe wedges when inl registration' therewith to respectively clamp the brush ibacks and-to` 'release ythe same.

A3; In a brush machine, theV combinationy with a work carrier, Vcfa holder comprising a recessed lmember Ifor receiving the 'brush backfand havinga locating face forv contacting -with the front face of said back, a float-- ing follower avithin saidrecessed member ,fory engaging the rear face lof the brush back` and a wedge for actuating said follower to rigidly .clamp the brush back between the; samefand-said locating surface.

.4. In -a brush machine, the combination with a work carrier, .of a work holder comprising a recessedY memberfor receiving'a brush back provided vwith'a locating surface for engaging the front` face of said back, a floating 4follower in said recessed member for engaging the rear face ofthe brush back and `a wedge for engaging said follower to clamp the brush back between the same and` said locatingsurface, the adjacent facesy of .6.51 said wedge and follower being noneparallel.

2. In va brush machine, the combinationof a work carrier, and aseries of work holders mounted on said carrier into which brush and contactingueach other between the ends .of said follower to .j permitangular adjust.

linger at ldiderent vpoints in the cycle to actu-.Q 1 -2 ate said wedge for respectively clampingl and releasing the brush back.I

6. In a brush machine, the combination, with a work carrier, of means for..inter`V` mittently actuating `the said carrier to adjust the same inone directionV stepfby-step, fric?- tionalf jdriving means. for actuating, lsaid carrier l1in al. transverse direction, indexed notched bearings on said carrier, a detent guide for. engaging Vsaid notched bearings to hold said carrier from movement under the friction drive while permittng'stepbyfstepadjustment in the. .transverse direction,.- means` for intermittently disengaging [andA re-'engagingsaid detent guide to :permitfric-` tional movementwofsaid carrier from one notchitov another, and ,meansfor adjusting saidguide intermediate successive disengagementsl to vary the `positions of .the carrier .in Said Step-byestep adjustments. d l,

7. In a brush machine, thefcombination with a rotary work carrier, of means for ing termittentlyV actuating said ,carrier in` an,` axial direction step by step, constantly opy. erating friction means for placing a predetermined torque d on. said rotary carrierfindexed notched bearings onfsaid carrier, ;a;detcntlgllide, `for .engaging r'said .notched bean;

- ings toghold said carrier fromfrotation whilel permittingthe step-byfstep1 axial adjust-ment,-v means fo'r periodically disenga'gingvalldfref, engagingsaid detentpguide ,to permita fr tional rotation of said carrierVv and adj-ustjment thereof fromvonenotchfto another, and` means for moving said guide intermediate' successive disengagements Fto' vary the `posi-` tions ofthe carrier in the successive step-'bystep adjustments thereof.t` j f 8. In a brush machine, the combinationlof a `rotaryvworlr carrierfmeansffor mounting f the workthereon, means for intermittently actuating said carrier stepgby step in an axial: direction, constantly operating friction meansfor'v placing Va torque on saidfcarrier,

a circumferentialfseries of indexed notchedbearings on' said'carrier, a detent -guide forv engaging said notched :bearing to hold'lsaid carrier against said/drivingtorque, means for periodically disengaging .and re-engaging said detent guide to'pcimit rotation-of` said carrier from one notch to another, means for adjusting sald detent guide intermediate successive disengagements thereof to vary the rotative position of said carrierin successive step-by-step adjustments, and means forl adjusting the axis of said carrier whereby Vthe work is adjusted in three transverse planes.

9. ln a brush machine, the combination of a rotary work carrier, means for intermittently actuating said carrier step-by-step in an axial direction, constantly operating friction means for placing a torquey on said cary .rier, a circumferentially extending indexed i a'rec'essed member for receiving abrush back,- 454 notched .flange on said carrier, a guide detent for successively engaging said notched bearings and extending parallel to the axis of said carrier, means for intermittently dis- `engaging and re-engaging said guide detent to permit movement of said carrier from one notch to another, and means for moving said guide detent tangentially of the carrier to change the path of said step-by-step adjust- `ment'.

10. In al brush machine, the combination of a rotary drum, a non-rotative member within said drum and carrying the same, a frame member betweenr said non-rotative `member and saidl drum, means on said frame member permitting axial movement of said 'non-rotative member while restraining the same from rotary movement, a cam carrierr rotatively mounted on said frame member vbelow said drum,- a stepped cam on said cam carrier extending upward within said drum, means cooperating with said stepped cam for raising and lowering said non-rotative member, and a pluralityof'additional cams on said cam carrier for controlling other move- 40' ments of said drum.

11.'In a brush machine, the combination with a rotary work carrier, of a series of work'holders on said drum each comprising a locating 'flange on said recessed member for contacting with the front face ofthe brush back, a floating follower for contacting with the rear face of saidbrush back, a wedge for V5.0., engaging said follower to clamp the brush back between the same and said flange, and luid actuated means located at spaced points in the cycle of said carrier for operating said Wedge to respectively clamp and release the brush back. v

12. In a brush machine, the combination with a rotary work carrier, of a series of work ated means located at spaced points in the cycle of said carrier for operating said wedge to respectively clamp and release the brush back. v

13. In a brush machine, the combination with a rotary work carrying drum, anonrotative member withinsaid drum for supporting the same, a frame member surrounding said non-rotative member and between the same and said drum, means on said frame member permitting the axial movement of said non-rotative member thereon while preventing a rotation thereof, a hollow post projecting upward from said non-rotative member axially of said drum, a series of work holders mounted on said rotary drum into which .brush backs may be freely inserted and from which completed brushes may be freely withdrawn at certain points in the cycle, clamping means for thel brush backs in said holders, fluid actuated motors for operating said clamping means to clamp and re- Y lease the brush backs, said motors being supported upon said hollow post an-d supply conduits for the Vfluid tol said motors passing through said hollow post.

14. In a brush machine, the combination,

of a rotary drum, a non-rotative member within said drum and carrying'the same, a frame member between said non-rotative member and said drum, means on said frame member permitting axial movement of said;

nom'otativememberwhilerestrainingthesame from rotary movement, a cam carrier .rotatively mounted on said frame member below said drum, a stepped cam on said cam carrier extending upward within said drum, means cooperating with said stepped cam forl raisingand lowering said non-rotative member`,a

drive mechanism for rotating said cam car`v rier, mechanism timed therewith for nonpositively rotating said drum, means for arresting movement of said drum', and a cam on said cam carrier for controllingsaid arresting means to produce a step-by-step'rotative adjustment of said drum.

15. In a brush machine,the.combination of a `rotary drum, a non-rotative member within said drum and carrying the same, a

frame member between said lnon-rotative member and said drum, means on said frame member permitting axial movement of said non-rotative member while' restraining vthe same from rotarymovement, a cam carrier f `rotatively mounted on said frame member below said drum, a stepped cam on said cam carrier extending upward within said drum, means cooperating with said stepped cam for raising and lowering said non-rotative member, a plurality of additional cams on said cam carrier including a cam controlling said arresting means, and a cam controlling movement of said frame member.

16. In a brush machine, the combination'of a rotaryv drum, anon-rotative member within loo said drum and carrying the same, an annular frame member between said non-rotative member and said drum, a stationary frame member on which said annular frame member is mounted for movement in a direction transverse to the aXis of 'said drum, a cam carrier rotatively mounted on said annular frame member, a stepped cam on said cam carrier extending upward within said drum,

means cooperating with said stepped cam for raising and lowering said non-rotative member, a second cam on said cam carrier, means cooperating with said second cam for moving said annular frame and members carried thereby upon said stationary frame member and means for intermittently rotating said drum whereby the latter is movable in three planes respectively transverse to each other. In testimony whereof I aiiX my signature.

CONRAD JOBST.

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