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Jan. 11, 1938. R. 'r. SCULLY ET AL 2,105,334 BRUSH FORMING APPARATUS Filed Dec. 14, 1935 By 4 Sheets-Sheet l Wan-'25 444/6 A TTORNEY. Jan. 11, 1938. R. T. SCULLY ET AL 2,105,334 BRUSH FORMING APPARATUS Filed Dec. 14, 1955 4 Sheets-Sheet 2 S. 3,?“ WAN/MRY. 2WE4 W35m T.E4 (LF7121,. E Jan. ‘11, 1938. 2,105,334 R. T. SCULLY El‘ AL BRUSH FORMING APPARATUS Filed Dec. 14, 1955 4 Sheets-Sheet 3 QSQ o __l_ O mum 8 I I I I I I ‘ LLM & Yd; 54.Z/ ;. 17%A W?m wmu?”8/6, P57 T 341“ .R Jan.~_ll, 1938. R. 'r. SVCULLY ET AL 2,195,334 BRUSH FORMING APPARATUS Filed Dec. 14, 1955 4 Sheets-Sheet- 4 12-4 50 INVENTORS. P555 7 $cu¢4 y BY MLTC‘ZS AAA/6 A TTORNEY 2,105,334 Patented Jan. 11, 1938 UNITE STATES PATENT OFFlCE 2,105,334. BRUSH FORMING APPARATUS Rees T. Scully and Walter S. Lang, Pittsburgh, Pa. Application December 14, 1935, Serial No. 54,467 12 Claims. (Cl. 300-2) II of Fig. 1, and showing the bristles being ap Our invention relates to brush forming ap plied to the receiving core; paratus particularly‘ designed for the manufac ture of circular, cylindrical or rotary brushes , of the type in which looped brush material bris 5; tles, i. e.,.hair, wire, ?bre, etc., are disposed on the periphery of a core or brush body and main Fig. 4, a cross-section taken on the line IV—I‘V tained in position thereon by suitable means, such of Fig. 3; Figs. 5 to 9 inclusive, enlarged detail sectional for example, as a binding wire. In the commercial manufacture of brushes of 10; the type speci?ed, it has been the practice to apply looped bristles to grooves on the core or brush body by hand; the operator looping quan tities of bristles beneath the clamping wire dur ing the winding of the latter into the grooves. 15- This practice in addition to being slow and costly is objectionable in that it is very dii?cult to ef feet, a uniform distribution and thickness of the layer of bristles applied. Our invention contemplates a machine where . in we provide automatically operable mechanism 2of for feeding and applying bristles to the periphery of the core or brush body, or to the grooves there of, in an effective and expeditious manner and at the same time maintaining a uniform quantity ,1 of bristles and an even distribution thereof for each of: the looped masses of bristles. Among the novel features of our invention are; a picker device for continuous delivery of a uni form layer of bristles from a source of supply; a ‘ bending member for looping the bristles beneath 3Q. and upwardly around a clamping wire; and a feed screw means for receiving and conveying the bristles in a continuous layer from the picker device to the bending member, coacting with the 35: latter for maintaining the looped bristles in par allel relation, and supporting and conveying the looped bristles in the said relation from the bend ing member to a rotating brush core to be ?lled. By the use of the feed screws, we are enabled 40- to accurately provide a constantly uniform feed or travel of the bristles identical with the periph eral speed of the receiving core, and by simple speed adjustment, the apparatus is readily adapted to the ?lling of brush cores or bodies of 45, various diameters.‘ Additional objects and advantages will be come apparent from the following description taken 'in. connection with the accompanying drawings, wherein: 50 Fig. 3, an elevational view of a preferred form of apparatus for rotating the brush core during the application of bristles thereto; Fig. 1 is a plan view of an embodiment of our invention, showing the same associated with a cylindrical brush core for application of bristles thereto; . v 'Fig. 2, a part elevational and part sectional 55' view, the section being indicated by the line II views taken on lines V-V, VI—-VI, VII-VII, VIII-VIE and IX—IX respectively of Fig. 2, 10‘ illustrating successive positions in the travel of the bristles from the picker device to the receiv ing core, as hereinafter more speci?cally de scribed; Fig. 10, an enlarged detail view of the picker 15 adjustment; and Fig. 11, a diagrammatic view showing a means of driving the screw conveyor device. Referring to the drawings, 2 designates gener ally a bristle supply device, including parallel spaced upper and lower feed bars or ways 3 and N 4, providing a passage 5 therebetween for pas sage of the straight bristles a. The bristles may be inserted in the passage 5 by hand or by gravity feed from a hopper 6, being moved forwardly in said passage by means of a weighted pusher or head ‘I. The bristles are fed in transverse rela tion to the bars 3 and 4, and are centrally sup 5 ported by the latter. Suitable guides B con?ne the ends of the bristles for maintaining the same substantially parallel and even. 30 Positioned at the forward or discharge end of the passage 5 and in the plane of the bristle-sup porting bar 4, we provide a rotary picker de vice in the form of a toothed wheel ID, the lat ter being located midway and slightly above the rear ends of a pair of spaced horizontal feed screws or conveyors H and I2. The bristles are fed into the provided spaces or pockets l3 between picker teeth of the wheel ID by the action of the feeder head ‘I, and are rotated or carried down 40 wardly for discharge transversely onto the upper surfaces of the feed screws II and I2. For the purpose of supporting the bristles in their travel with the picker and for discharge 45 therefrom, the forward end of the lower feed bar 4 is provided with a downwardly extending arou ate ramp l4, terminating at its lower forward end midway between the rear ends of the feed screws and slightly below the upper surfaces 50 thereof. At its upper end, the ramp is spaced from the picker circumference only for clear ance, but the space gradually increases down wardly to a maximum at the terminal end of the ramp. 55 2 2,105,334. Supported from the upper bar 3 by adjustable tact with the clamping wire 23, and the frictional connections I5, we provide a pair of arcuate ?n gers I 6, one on either side of the picker til, the curved edges 1) of which are substantially coin plemental with the forward surface of, the ramp I4, to form a bristle passage 5a. therebetween, said edges b of the ?ngers however being eccen contact thus obtained is su?icient to support said bristles during theremainder of their travel by the feed screws to the receiving core A. In this manner, the bristles are looped and uni trically disposed with relation to the periphery of the picker. The bristles will be out of the open 10 ends of the pockets at a point above the upper surfaces of the feed screws, whereby the bristles carried by the picker IG are deposited onto the formly applied to the clamping wire 23, and by reason of the synchronized action of the feed screws, the terminal portions or ends of the bris tles are positioned and maintained in correct up right position, normal to the clamping Wire. ‘ 10 Feed screws H and I2 preferably extend be yond the disk 2I to a point directly over the " ' brush core A, and are supported a distance back It will be readily seen in Figs. 2 and 10, that 15 by varying the position of the ?ngers IS with respect to the pockets I3 of the picker i and the ramp I4, the volume of the bristle feed may be adjusted in accordance with the requirements from their free ends by backing~up rolls or worm gears 30. These gears mesh with and aid in sup porting the screws, while preventing any separa screws. , of the brush or brushes to be ?lled, and a bristle 20 layer of any desired thickness or’ volume may be thereby applied to the feed screws. The upper feed bar 3 may also be adjustedby its suspension brackets I'I to‘vary the bristle passage 5 as de sired. Suitable guide plates 8a con?ne the ends 25 of the bristles‘during their travel in the, picker, device to insure-proper alinement. tion thereof due to the thrust applied particu larly during the bending or looping of the bristles. While we prefer to employ feed screws of the tapered form illustrated, straight or uniform 20 diameter feed screws may be satisfactorily‘em-r ployed without departing from our invention. The tapered screws having small terminal ends, have the added advantage of minimizing inter ference with the bristles being applied to the 25. core A, as shown in Fig. 9. The reduced ends of The feed screws H and I2 are mounted at their ' rear ends in suitable bearings I 8 and are pro bristles on the rotating core without injury to the vided with meshing gears I9 and 20 respectively. same. 30 The screws are of different form, screw II being of right-hand thread and screw I2 being of left hand thread, and are designed to be rotated in synchronism' in opposite'directions for the pur pose of simultaneously advancing corresponding 35 portions of each, thereby conveying the bristle layer longitudinally while maintaining said bris tles transversely thereof without angulation or separation. ' , 3 the screws pass through the previously applied ‘ In operation, the core or core section A, is 30' rotated by any suitable means at a constant pre determined speed. Hence, knowing the' lead or number of threads per inch of the feed screws and the circumference of the core A, it is’ pos sible to adjust the speed of the screws to feed the bristles a at the peripheral speed of the core; and since the clamping wire 23 is secured to the cir cumference of and driven by the core, the ‘wire 2I designates a bending device in the form of a 40 disk which is mounted for rotation between the and bristles travel at the same rate of speed. feed screws II and I2 forwardly of the picker It). This bending device or ‘disk has a peripheral groove 22, for receiving a continuous ‘strand, of bristle clamping wire 23 fed from a tension roll 45. 24. The wire 23 passes along the under portion of the disk between the feed screws and thence are driven at a peripheral speed equal to the feed of the screws, whereby it will be seen that the en-vv tire travel of the bristles from feed supply to the core is at a constant speed equal to the periphera speed of the core or core section A. ‘ vice in the manner stated, we have shown gear where it is secured by any suitable means 25 with and chain drive, but it is obvious that other means‘ may be employed with like result. As illustrated The 50 wire is wound several times upon the roll 26 and is fed thereto from a reel or‘ other source of supply (not shown) through afriction clamp 21. Roll 24 is mounted on a transverse shaft, which shaft is secured by its ends in adjustable‘ split 55 bearings 28 adapted for regulating the required tension on the wire. ' ‘ ' In addition to'the peripheral groove 22 the bending disk 2| is preferably serrated, providing ?ne teeth 29 for positive engagement with the un 60 supported center portions of ‘the bristles a, the latter'being presented transversely to the rotation of the disk by the feed screws II and I2. " Bb' designates suitable guides for the bristle ends during their travel from the picker iii to the bending disk 2|.‘ ’ ' . ' '- ' > The action of the bending disk ‘BI is clearly illustrated in Figs. 2, 7, and 8, wherein it is shown that the disk bends'the bristles centrally down ward between the feed screws for looping the 70 bristles beneath the clamping wire 23 carried by the disk. ’ Since the direction of rotation of adja cent portions of the feed screws I I and i2 isup ward, as indicated by the arrows, the resulting wiping action thereof urges the lower or looped 75 portions of the bristles a upwardly into ?rm con 45 For driving the feed screws and the picker de outwardly to the brush core or core section A, in the bristle-receiving groove 25 thereof. 65 Likewise, the picker I0 and bending disk 2I a motor M is coupled with a Reeves drive or 50 other variable speed mechanism, diagrammati cally indicated at 3|, from which a sprocket and’ chain drive 32 drives a jack shaft 33. A pinion 34 on this shaft drives one of the feed screw gears I 9 through an idler 35, and gear I9 in turn drives the other feed screw gear 20, as in Fig. 11. A worm 38 on shaft 33 drives a cross shaft 31 by a worm gear 38, and said shaft also drives the picker shaft 39 by a sprocket and chain drive 40. 4| indicates a sprocket and chain drive for driv-' 60, ing the bending disk shaft 42 from the picker shaft 39. ' ' The respective drive ratios of the mechanism‘ are so'proportioned as to synchronize the periph.-‘ eral speeds of the picker and bending disk with‘ the feed of the screws II and I2 for'the ‘purpose described. Adjustment of the mechanism for ?lling brush cores of various diameters is effected‘ by simple adjustment of the variable speed de vice 31, as will be readily understood. ' 70' Various means may be provided for mounting‘ and rotating the brush cores for ?lling by the device described. For example, we have illus trated a frame or bed B having longitudinalrails or ways 43 upon which a carriage C is slidablyv 753. 2,105,334 mounted, this carriage comprising a tail stock 44 and a head stock 45 connected by suitable mem bers Both the head and tail stocks are pro vided with upper and lower rollers 41 for en gaging the rails 43 for longitudinal movement of the carriage thereon. Suitable centering devices are provided in the tail and stocks for rotatably supporting the brush body r core A therebetween. and the mem bers have adjustable means 48 in connection with the tail stock. 44, for accommodating the carriage to cores of various lengths. The shaft 43 of the head stock is mounted for rotation in suitable bearings, and mounts a pul ley driven from a second pulley 5! by a belt 5'2. The pulley El is slidably mounted on a 3 are tightly secured by the tension of the clamping Wire. Various changes and modi?cations are con templated within the scope of the following claims. We claim: 1. In brush making apparatus, means for sup porting and rotating a brush core, a screw con veyor including a pair of screw threaded members leading directly to the core for conveying and 10 depositing bristles onto the core, a bristle bending disk disposed intermediate the ends of the con veyor between the screws and cooperating there with for bending and looping bristles prior to deposit on the core, said screw members being square or splined drive shaft 53 between spaced abutments on the carriage, said pulley having a plurality rollers 55 for assisting in the; slid ing action thereof. The drive shaft 53 is driven at constant speed closely spaced to engage opposite sides of the loop portions of the bristles, and means for feed ing a wire under tension to the bristles, said bending disk acting against the tension on the wire. 2. In brush making apparatus. means for sup by a motor P through a speed reducing device porting and rotating a brush core, a screw con diagrammatically indicated at 56. The weight of the rlage and the core A thereon is counter I balanced by a weight W to facilitate sliding l7) A thereof. In ?lling brush cores or core sections having a ingle circular groove, it is merely necessary to rotate the through one revolution, but in other cores such as the cylindrical spiral grooved core illustrated, it also becomes necesessary to translate said core longitudinally. For this purpose, we prefer to employ a variable f suitable form, including a toothed rack -- ., nted on and extendingllongitudinally of the carriage C, and movable by a meshing gear 6 l. 5i, and therefore the rack and car riage, aw driven from the shaft 53 by a variable belt drive or other suitable means, through connecting bevel gearing 63, whereby the carriage and its core A may be translated at a regulated speed. During such movement, the drive pulley 5i slides along its shaft 53, and at the same time drives the pulley 59 to rotate the core A, the speeds of translation and rotation of the core A beingconstant during the entire ?lling operation. The brush ?lling mechanism is mounted in any suitable manner adjacent the bed B of the core rotating device, with the feed screws H and i2 thereof extending transversely of and terminat ing directly over the core A. In order to ac commodate the ?lling mechanism to cores of vari ous diameters, the base or plate 58 mounting this mechanism, as well as the motor M and variable , speed means iii, are vertically adjustable by means of threaded supports 59 or the like. In. operation, the clamping wire 23 is threaded in the machine and secured by means 25 to the core A in one terminal end of the bristle-receiv ing groove and suitable tension is applied thereto by means 28 associated with roll 212. The bristle feed mechanism is started, and a continuous layer of bristles a is fed through the bending disk 2i and thence to the core A in looped relation. Upon the , bristles reaching the core the latter is rotated by motor P, and with both feed mechanism and core in motion, the spiral groove is continuously ?lled until completed, whereupon the motors P and M are shut off and the wire ‘23 is secured to the core to complete and secure the ?lling of the brush. It will thus be seen that by our invention, the bristles are automatically and uniformly fed and ?lled into the grooved receiving core, where they veyor including a pair of oppositely rotatable screw threaded tapered members leading directly to the core for conveying and depositing bristles onto the core, a bristle bending member disposed intermediate the ends of the conveyor between the screws and cooperating therewith for loop ing bristles prior to deposit on the core, said screw members being closely spaced to engage opposite 30 sides of the loop portion of the bristles, and means for feeding a wire under tension to the bent bristles. 3. In brush making apparatus, means for sup porting and rotating a brush core, means for 35 conveying and depositing bristles directly onto the core comprising a pair of oppositely rotat able spaced screw threaded members. a rotatable bristle bending member operable between the screws and coacting with the threaded members for looping the bristles prior.to deposit on the core. said screw members being closely spaced to engage opposite sides of the loop portion of the bristles and to convey the bristles after being looped, and wire feeding means for feeding a 45 wire to the bent bristles. 4. In brush making apparatus, the combina tion with a rotating brush core having grooves on the periphery thereof, of a pair of closely spaced oppositely threaded and oppositely rotating feed 50 screws for delivering bristles directly to the grooves of the core, the feed of the screws being equal to the peripheral speed of said rotating core, and a rotatable bristle bending member co operating with the screws and disposed inter— 55 mediate of the ends thereof. 5. In brush making apparatus, the combina-' tion with a rotating brush core, of a pair of closely spaced feed screws, a picker device for delivering uniform layers of bristles onto and transversely of the screws, a bending member disposed inter mediate the ends of the screws for looping said bristles between the feed screws and about a clamping wire, said looped bristles being sup ported by the feed screws and conveyed thereby directly to the rotating core. 6. In brush making apparatus, the combina tion with a rotating brush core, of a pair of closely spaced feed screws, 2. picker device for delivering 70 bristles onto and transversely of the screws, a rotating bending disk disposed intermediate of the ends of the screws for looping said bristles between the feed screws and about a clamping wire, said looped bristles being engaged on op 75 I 4 2,105,334 posite sides thereof by the feed screws and con veyed thereby directly to the rotating core. 7. In brush making apparatus, the combina tion with a rotating brush core, of a pair of closely spaced feed screws, a picker device and means associated therewith for delivering bris tles in uniform layers onto and transversely of the screws, a rotating bending disk disposed in wire adapted to be wound upon said core under tension, means spaced from the core for bending and looping a supply of bristles beneath the wire, and means for supporting and conveying said looped bristles from the bending means to the 5 core, said conveyor means including a pair of oppositely threaded and oppositely rotating feed screws for frictionally engaging the bristles, whereby the looped portions of the bristles are maintained in contact with the clamping wire. 10 11. In brush making apparatus, the combina bristles being supported by the feed screws and tion with a rotating brush core, of a clamping conveyed thereby directly to the rotating core, wire adapted to be wound upon said core under the peripheral speed of the bending disk and the tension, means spaced from the core for bending feed of the screws being equal to the peripheral and looping a supply of bristles beneath the wire, 15 and means for supporting and conveying said speed of said core. looped bristles from the bending means to the 8. In a brush making apparatus, a screw con core, said conveyor means including a pair of veyor, means for delivering bristles onto the con veyor in uniform layers, and a bristle bending oppositely threaded and oppositely rotating feed member associated with the screw conveyor, said screws for frictionally engaging the bristles, delivering means being adjustable to change the whereby the looped portions of the bristles are thickness of the layers of bristles. maintained in contact with the clamping‘ wire, 9. In brush making apparatus, the combina the feed of the screws being equal to the travel tion with a rotating brush core, of a clamping of said wire. wire adapted to be wound upon said core under 12. In a brush making apparatus, the combina 25 tension, means spaced from the core for bending tion with a rotatable brush body, means-for ro and looping a supply of bristles beneath the wire, tating the brush body at a predetermined speed, and means for supporting and conveying said a screw conveyor for brush bristles, means for looped bristles from the bending means to the delivering bristles to the conveyor, said conveyor core, said conveyor means including a pair of extending from the delivery means to the brush rotating screw members engaging the bristles on body, means for looping said bristles disposed opposite sides of their looped portions, said mem intermediate of the ends of the conveyor, and bers rotating in opposite directions in frictional means for rotating the screw conveyor and the termediate of the ends of the screws for looping 10 said bristles between the feed screws and about a clamping wire secured to the core, said looped 15 20 7 25 30 contact with said bristles, whereby the looped portions of the bristles are maintained in con tact with the clamping wire. 10. In brush making apparatus, the combina tion with a rotating brush core, of a clamping looping means synchronously with the rotation of the brush body. 35 REES T. SCULLY. WALTER S. LANG.