US2557934A - Hat brim finishing machine - Google Patents

Description

June 26, 1951' D. l. BEHMEl q 2,557,934

HAT BRIM FINISHING MACHINE Filed Dec. 30, 1946 4 Sheets-Sheet 1 FIG.| I

Inwentor 58 0. Ivan .Behmer,

FIG. 6

Q Q "as I J 67 e2 (Ittorncg 4 Shgets-Sheet 2 D. I. BEHMER HAT BRIM FINISHING MACHINE June 26, 1951 Fzled Dec 30, 1946 June26, 1951 L EH ER 2,557,934

HAT BRIM FINISHING MACHINE Filed Dec. 30, 1946 4 Sheets-Sheet 4 I22 |24- 5 ll? l I07 I23 FIG x :09

3nventor D. lvun Behmr,

Watering Patented June 26, 1951 UNITED STATES PATENT 2,557,934 I HAT BRIM FINISHING MAC INE D. Ivan BehmerQLititz, Pa; pplica i nbwemb r 30, 46 S r a q- 7119-11 5 20 Glaims. 1

This invention relates to improvements in hat brim finishing machines, and more particularly to, an improved brim pouncing machine as the term pouncing is used in its broad sense to ern-. brace the various abrading, as by sand-papering' or clothing, operations practiced on the brim of a felt hat in the finishing thereof.

Generally stated, the invention contemplates and aims to provide a direct-drive type of brim pouncing machine capable of achieving high tool speeds, which is. characterized by improved and simplified design and by compact, stream: lined construction throughout, which is easy to control and operate, which is effective and effi-. cient in operation, which produces a uniform and superior hat brim finish, and which is equally efiicient in performing all of the various back and front-shop operations required in the finishing of the brim of a felt hat. A more particue lar object of the invention is the provision of a direct drive type of hat brim pouncing machine in which high tool speeds can be obtained in a safe, dependable and eifective manner and with a minimum of vibration. Another object of the invention is the provision of a hat brim pounding machine of the type wherein the tool carrying arms are driven directly from the motor shaft, which employs an improved means of transmitting drive from the motor to the tool care rying arms and of imparting separation and ap; proach motion to the arms while the machine is running, as required to present the brim-s of the hats being worked to the action of the pouncing tools and to remove them from the machine upon completion of the pouncing operation, without stopping and/or starting the motor.

A still further object of the invention is the provision of a hat brim pouncing machine capable of achieving positive, calibrated control of brim thickness, and which is further so con: structed and arranged that the tools operate under adjustable spring pressure, with the pressure adjustin means being conveniently located and easily operated.

The invention also aims to provide a brim pouncing machine employing an improved and simplified brim feeding mechanism of the type employing positively driven upper and lower feed rollers cooperating to grip and progressively feed a hat brim to the action of the pouncing tools,

which is characterized by a simple yet efiective feed roller drive eliminating belts, sprockets, chains and the like, and which incorporates roller mountings permitting relative separating and approach movements to be applied to the rollers while in motion.

Another important object of the invention is the provision of an improved foot treadle con.- trol capable of interrelating the separating and approach movements of the pouncing tools and (01. 2 23-20) a ,2 h e ro lers n such manner tha Ieed. rollers m re t their q 'qsed q br hfee g m ghon prior to' th casin in the o s to; their normal working position with respect to the brim, .5 an hat th n he tools. s p' t nr i i se ara t ie he ll'er th e y e make mp s ib hev ari h or b ih when and, a e; same um, leaying the operators hands free o. ,fir an hdraw h h he the m hine i i manta,

T above a her h qt an m ture 7 va-ntage win be. apparent. from the ioliiiwing description f the i 'ei tibn, ta en wi h the, o p n ihg a e gs ill strating a ref req n ys l hbod e t an; w er in a Fi i is a ar -se tiona P ain View Of a, l i l Iiciuhcihe machine mora e t e enth he. V13! il u t ifi an reed r lle d n F 2 s: a pa ma hine of the. de ail or h t and Separatin mean,

F g-'3' a a t s ct ona S de elva ieii 1 th m hi when he. he, m hi fi @I the etha trio, cam i l $1 'qafry hj: a ms and the driv; inem hs her Q ie- 4 is a o la view .Q t e te d $9 .6 as; 'sembly with certain parts thereof sn wn in ec, tion; 7

Fi' s a detail ie i st at t e feed id er assemb y in vie Se mon r pect in are th u 1 0. the bou tool's Fig, TiHust -at he a pre rq m u ng of th po ndi too s t h br e qr thei ngu ar ad, m' t- Reierr awin s; whe e n lik r f h charahter i desi nate l k par s th ou 1*; the several vifiws, referenc ch acter I, hat an u h "The hws'hiif i ed at new t on.- Z el, Pl te !5 91 a e a t which )9 inc udes .311 11 Ht co" I is housi f is a .d irj nearer h vin shat 2'! t na-iiy rspqsect 3 As best seen in Fig. 2, the motor is secured to an annular head casting flange l5a which depends from the head plate into the machine housing. The upper or head end of the motor shaft 2! projects through an opening provided therefor in the head plate [5 and its projecting end splined as at 22. The lower or tail end of the shaft projects into a motor frame extension casting 24 affixed to the motor housing and carries a power take-01f worm 25 for driving the brim feeding rollers, as will be hereinafter described.

Upper and lower pouncing pads or tools generally designated 28, 30 have their operative faces oppositely disposed in the usual manner whereby to operate on the opposite faces of a hat brim inserted therebetween, said faces being replaceably covered with a suitable abrasive material selected for the particular pouncing or abrading treatment to be given the hat brim. The tools 28, 30 are carried at the free ends of upper and lower arms 32, 34, respectively, which are mounted for compound oscillating and reciprocating motion in opposite directions whereby their free ends and hence the pouncing tools move oppositely to one another in closed generally elliptical paths of motion. To provide such a mounting, the rear ends of said arms are pivotally connected by vertically aligned wrist pins 35, 36 to upper and lower fulcrum blocks 31, 33 (Figs. 1 and 3), slidable in fore and aft direction in a vertically disposed, channel-shaped bearing shoe 40 which is bolted to the front face of the neck l6 of the head casting. Accordingly, the tool carrying arms 32, 24 may reciprocate by a limited amount in the direction of their axes and may also oscillate laterally about the common axis of the wrist pins 35, 36. Moreover, due to the vertical motion permitted at least the upper bearing shoe 35 in the bearing block 40, the arms are mounted for separating and approaching motion, that is to say, the upper arm 32 may raise and lower with respect to the lower arm 34, when so actuated.

Considering now the means for imparting the aforesaid compound motion thereto, the arms 32, 34 are formed intermediate their ends with the eccentric enlargements designated 32a, 34a (Figs. 1 and 3). Contained in the eccentric enlargement 34a of the lower arm 34 is a rotary eccentric cam 42 whose bore is provided with driving splines 43, and into which extends the splined upper extension 22 of the motor shaft 2|. The eccentric cam 42 is journaled for rotation in spaced upper and lower anti-friction ball bearings 44, 45 secured in place in the arm enlargement as by inner and outer lock bushings 41, 48. Accordingly, drive from the motor 20 is transmitted to the eccentric cam 42 through the splined driving connection between cam and motor shaft, with rotation of the eccentric cam imparting a compound reciprocating and lateral oscillating motion to the arm 34 and a corresponding elliptical motion to the tool 30.

As seen in Figs. 2 and 3, the splined motor shaft extension 22 extends into the eccentric cam 42 for approximately half the axial length only of its splined bore. Extending into the other or up-' per end half of the bore is the lower splined end 49 of a floating drive shaft extension 48 which is driven from the eccentric cam 42 through its splined driving connection therewith. Intermediate its ends the shaft extension 48 carries a solidly mounted rotary eccentric cam 50 for actuating the upper tool carrying arm 32. As best seen in Fig. 3, the eccentric cam 50 is arranged out of phase with respect to the eccentric cam 42 whereby the arms oscillate in opposite directions, and is j ournaled for rotation in spaced upper and lower anti-friction ball bearings 5|, 52 contained in the eccentric enlargement 32a of the upper arm 32 and secured in place therein by inner and outer lock rings 53, 54.

The drive shaft extension 48 is provided with an external thrust shoulder 55 on which the lower end face of the eccentric cam 50 is supported, whereby as the shaft extension is bodily projected upwardly it carries with it the eccentric cam 50. As the latter is vertically fast in arm enlargement 32a and hence to arm 32, any upward movement imparted to the eccentric cam 50 is transmitted to the upper arm 32 and hence to the pad or tool 28 carried at the free end thereof, the inner or restrained end of the arm and its fulcrum block 31 meanwhile sliding vertically in the fulcrum shoe 40. Accordingly, rotation of cam 42 as described efi'ects rotation of the upper cam 50 to impart compound reciprocating and oscillating motion to the upper arm 30 and elliptical motion to the tool 23. Due to the opposite phase relationship of eccentric cams, such tool motion is in the opposite direction to that applied to the tool 30. Moreover, the floating drive connection between drive shaft extension 48 and eccentric cam 42 permits separating and approach motion to be applied to the upper arm and tool carried thereby with respect to the lower arm and its tool.

By reference to Fig. 3, the eccentric cam 50 is extended above the arm 32 so as to enter the bearing sleeve ll of the head casting [4. The drive shaft extension 48 is further extended into the bearing sleeve I1 and at its upper end is journaled for rotation in a floating hearing assembly including anti-friction ball bearings 58, 59 contained in a bearing sleeve 5!] having sliding bearing in a fixed wear sleeve 31 secured within the head casting sleeve I1. The fixed wear sleeve 6! is externally shouldered adjacent its upper end as at 62, the resulting shoulder abutting on an internal shoulder provided in the bore of the head casting sleeve, against which the sleeve 6! is locked in said bore by a lower lock ring 63. A suitable oil retainer assembly 54 is effective between the extended upper end of the eccentric cam 50 and the fixed wear sleeve 6|, as shown.

A flanged shaft ring 66 (Fig. 6) is disposed above the uppermost end of upper bearing 58 and mounts a thrust bearing 61 against whose upper race reacts a tension spring 68 contained within the bore of a cap nut 15 which is screwed into and closes the bore of the head casting sleeve I! as shown. The tension spring encircles a stem 69 whose lower end is bored and interiorly threaded so as to thread on to the threaded upper end of the shaft extension 48. The stem projects through the cap nut and its upper projecting end 59a may be knurled as shown to provide a hand or tool grip, which permits manual turning of the shaft extension 48 and main shaft 21 as is desirable in mounting and adjusting the tools, for example. It will be observed that the tension spring 68 exerts downward pressure on the bearing sleeve assembly and hence on the drive shaft extension 48 which in turn transmits and applies this spring pressure to the upper arm 32 and its tool 28. The tension of spring 68 effective on the tool 28 may be adjusted by the simple operation of screwing down or up on the cap nut 10. I

According to the invention, relative separating and approach motion is applied to the osoiliating arms 32, 34, and "hence to the tools 2.8 and while the machine is in operation. To this end, means are provided to effect relative separation of the motor shaft 22 and it's floating extension 48. Referring to Fig. 2, the motor shaft is axially bored throughout its run length to receive a control rod I supported in suitable end bearings, and whose upper end exte-nd's into the bore of the cam eccentric 42 and is provided with a ball-point 76 adapted to bear against the lower end face of the floating drive shaft extension 4'8. Upon the control rod being positively actuated in upward direction, the shaft extension 48 and par-ts carried thereby, including the upper arm 32, are bodily raised against the action of spring '68, thus to effect separation of the tools 28, 36, as is required to insert and withdraw the brim of a hat being treated. Lowering movement of the control rod 15 results in a cor-- responding lowering movement of the upper arm 32 and its tool 28 in response to the action of spring 68. r

The aforesaid actuation of the control rod I5 in upward direction is eiiected through a treadle control mechanism now to be described. Referring to Figs. 1 and 2, a foot treadle arm Bilis mounted to turn on the axis of a stud 8i carried by a bracket 83 which, illustratively, is fixed to the lower right rear corner of the machine housing I0. Rigidiy afixed to the treadle arm is an upright connecting rod 84 whose upper end is threaded to receive spaced adjusting and lock bolts 85, 85a. for securing the outer end Bio. of a first degree lever 87 being fulcrumed intermediate its ends by a pin 88 carried in a downward extension of a fulcrum ring 8! which is fixedly secured to the motor frame extension casting 24. The opposite or inner end portion of the lever Bl lines up with a ball-point 9i! provided on the lower end of a stem which projects downwardly from a floating bearing housing 91 containing a step bearing 92 which supports a fitting 93 rigidly aiiixed to the lower end of the control rod E5. The bearing housing 9-! cperates in an adjusting gland nut or having cup formation whereby, in addition to its adjustment function, the nut serves also to provide dash-pot action which prevents a too rapid lowering of the tool carrying arm 32.

From the construction, so far described, it will be seen that when the treadle arm '80 is depressed, the inner end of lever 8'! moves upwardly and eiiects corresponding upward movement of the bearing housing 91 and hence of the control rod I5. Upward movement of the control rod is in turn applied through upper oscillating arm 32 to the tool 28, thereby to eiiect separation ofthe tools 28 and 38; By proper proportioning of the parts, the amount or degree of tool separating motion is such as to, permit ready insertion and withdrawal of the brim of a hat therebetween. Upon foot pressure being released from the treadle, the upper arm 32 lowers under, the action of spring 68 and its tool 28 moves. into operative position with respect to tool 39 carried by the lower arm 3%. It will be observed also that upon release of foot pressure applied to the pedal arm 80 the tension of spring 68 is transmitted through the control rod I5 to lever 81 in direction as to effect raising of the outer end 8111 of the lever 81 and return of the treadle arm to its normal raised position.

According to a further feature of the inven-a' 6 tion, means are provided for adjusting the spec? ing between the operative faces of the tools 28, 31!,as determined by the amount which arm 32 can lower with respect to arm 34. In this connection, it will be noted that in their operative or working position the tools are normally main tained in spaced relation by an amount which is fixed by the vertical position of the floating drive shaft extension 48 with respect to the vertically fixed drive shaft 20. Referring to Fig. 2, it will be seen that the outer end 81a of the lever 81 lines up with the ball-point 95 provided at the lower end of a control rod 96 whose upper end extends through the horizontal head plate I'5. Said control rod is supported adjacent its upper end in a thrust bearing 91 and adjacent its ball-point end by a bracket 98 secured to the motor frame extension casting 24. The upper edge surface of the lever '81 may be provided with a concavity 95a providing a seat for the ballpoint 85, The extending upper end of the rod 96 is threaded into a calibrating knob I00 which is 'turnable in desired increments to adjust the vertical position of the rod :and hence of ballpoint 95. To secure the control rod in adjusted, position, there is provided a key lock I (ll vcper ating in a vertical key-way 102 provided in the rod adjacent its lower end. Accordingly, the full raised position of the inner end 81a of lever 81 and hence of treadle arm is determined :by the vertical setting of the ball-point as established by the setting of the calibratin knob I00.- Inasmuch as the lowermost position of the control rod and hence of the floating drive shaft extension 58 is a direct function of the full raised position of the outer end of lever 81 as deter mined as aforesaid, it will be seen that the setting of knob I00 determines the normal spacing between the operative faces .of the tools 28, 31!).v Moreover, since the spacing .between ouncing tools determines the brim thickness of the hat being worked, the described arrangement provides simple and elrective means whereby final brim thickness may be controlled as well asta means for varying the pouncing action of the tools from coarse to fine pouncing, for example. I

According to a further feature of the invention, an improved means for feeding the brim of a hat being worked to the action or the bouncing tools is provided. Referring to Figs. 2, 4 and 5, such brim feeding means includes upper and lower conical feed rollers I05, 106 .afiixed to clined driving spindles I01, I08 journaled for ro tation in bearings I 39, I I0 contained in upper and lower housings HI, H2, respectively. As best seen in Fig, '5, the upper housing I II is hinged as at I I3 to the lower housing H2 whereby it may swing in opening direction relative to the lower housing. The driving spindles in], 108 are driven by bevel spur gears H5, H6 meshing above and below with an intermediate bevel worm gear I I! powered by the rotary core of a flexible shafting drive unit generally designated 118 (Fig. 2) which is supported adjacent its ends in brackets I I9, I20, respectively. The driving or input end of the flexible shafting core carries a bevel spur gear 25a (Fig. 3) which meshes with the herein described power take-off worm 25 on the lower end of the motor shaft 21.

As seen in Fig. 2, the bracket I20 supporting the lower end of the flexible 'shafting unit is mounted from the motor frame extension casting '24. The bracket H9 suporting the upper end of the shafting unit is afiixed to a tension adjusting U-frame I22 secured to the lower roller housing H2 and embracing both of the roller housings. Disposed within the U-frame is a coil spring I23 reacting between the top face of the upper roller housing III and an adapter I24 carried at the end of a tension adjusting screw I25. The head I25a of the screw is formed as a hand-knob which may be conveniently turned to adjust the tension of coil spring I23 and thereby the gripping pressure exerted by the conical feed rollers I05, I03 on the opposite faces of a hat brim disposed therebetween. To provide for limited adjustment of the feed roller assembly as a unit, the bottom face of the lower housing I I2 is provided with a longitudinal T-slot I2'I adapted to receive the head of a clamp screw I28, the threaded end of which extends through a large-size hole in the head plate I5. Accordingly, the position of the feed roller assembly can be shifted both forwardly and rearwardly and laterally as well by a limited amount, as required to adjust its position with respect to the pouncing tools.

It will be understood that conical rollers I05, I06 are normally spaced by a small amount as determined by the spaced disposition of their driving spindles and the pressure of spring I23. To effect substantial relative separation of the feed rollers I05, I06, as required to present and withdraw the brim of a hat to and from their action, there is provided a vertically disposed roller separating pin I30 which is mounted for axial movement in and through the lower housing I I2, and which is provided at its upper end with a head I3I positioned to engage against the under face of the upper roller housing III. The pin is of length to extend downwardly through the horizontal head plate I and well into the machine housing I0. Accordingly, upon the pin being actuated in upward direction, its head I3I will abut against the upper roller housing III thereby to swing it upwardly by a limited amount about its hinge pin II3, such swinging movement being in opposition to the pressure of tension spring I23. Conversely, upon lowering of the pin, the upper housing I I I lowers in response to the pressure of the spring I23 to its working position in which its upper conical roller I05 is in brim feeding relation with respect to the lower roller I06.

According to a further feature of the invention, the separating and closing motion of the feed rollers is controlled by the foot treadle 80 and is moreover so inter-related with the relative separating and approach motion of the pouncing tools 28, 30 that separation of the tools is invariably efiected prior to separation of the feed rollers and, conversely, closing of the feed rollers is invariably efiected prior to closing of the tools. To this end, roller separating pin I30 is aligned with a mushroom shaped head I32 carried at the upper end of an actuating rod I33 vertically supported in upper and lower brackets I34, I34a and having its lower end threaded to receive the spaced adjusting nuts I35, I350. providing an operating and lost-motion connection between said rod and the inner end 81b of the lever 81. Accordingly, upon depression of the foot treadle arm 80 by a predetermined amount, the inner end 8112 of lever 81 swings in upward direction to engage against nut I35, with continued lever motion actuating rod I33 and the separating pin I30 in upward direction. Consequent to such movement of the pin I30, the upper roller housing III isswung upwardly and roller I05 accordingly separates from lower roller I06. Upon release of the foot treadle, the inner end 81b of lever 81 lowers, first under the urge of spring I23 and thereafter of spring 68, with the roller housing III of course lowering under the urge of spring I23.

Through proper dimensioning of the parts and positioning of adjusting nut I35, it will be seen that in the normal raised position of the treadle arm both the tools 28, 30 and the conical feed rollers I05, I06 are in their closed working positions in which the tools engage against the upper and under surfaces of the brim of the hat being worked, and in which the feed rollers grip the brim to progressively feed it to the action of the tools. Upon depression of the treadle arm 80, the inner end 8112 of lever 81 first engages the ball-point as results in raising of the control rod I5 and separation of the tools. At this point in the arc of movement of the lever 81, its inner end 8'") has not raised sufficiently as to effect engagement of roller separating pin I30 with actuating rod I33. However, further lowering of the treadle arm 80 results in the end 81?) of the lever 81 raising by an amount such that it actuates rod I33 and thereby pin I30 in upward direction to effect separation of the feed rollers. With release of the treadle arm 80, the inner end 8112 of the lever 81 disengages actuating rod I33 from the roller separating pin I30 prior to disengaging itself from the ball-point 90, with the result that the feed rollers invariably close prior to closing of the tools. The described interrelation of the opening and closing actuation of the tools and feed rollers makes an uneven sanding operation impossible, since it insures that feed motion is imparted to a hat brim prior to closing of the tools thereon. Moreover, the described control of both tool and feed rollers operation from a foot treadle leaves the operators hands free to present and withdraw a hat brim to and from the action of the tools and feed rollers while the machine is in operation.

So that the machine may be left running, with both the tools and the rollers in their separated or non-active relationship, a treadle latch I38 is affixed to the side wall of the housing I0 adjacent the treadle arm and in position to engage the latter as it is depressed to its substantially full low position. The treadle arm may simply be released from the latch by a slight lowering thereof accompanied by foot pressure to the outside, whereupon the treadle arm automatically returns to its normal full raised position in which the tools and feed rollers are in their normal working position.

According to a further feature of the invention, the mounting of the pouncing tools 26, 30 on the free ends of the tool arms 32, 34 is such as to provide for angular adjustment of the tools about an axis which is transverse to the longitudinal axis of the arms. Referring to Figs. 3, 7 and 8, each of the tool arms is formed at its free end with a convex clamping face I40, and the mounting face of the tool body or casting is provided with a channel or groove I4I whose bottom wall I42 is concave and complemental to the convex clamping face I40. The width of the channel MI is such that it receives the mounting end of the arm with sliding clearance only. As seen in Fig. 7, the tool casting is provided with longitudinally spaced steel inserts I43, I43a screwed thereinto, the inserts being formed with a threaded bore receiving the ends of mounting bolts I44, I44a, operating in a longitudinal slot I45 (Fig. 1)

75 provided in the mounting end of the arm. The

above described mounting permits of angula -.adiust.ment of the tools about a transverse axis since upon loosening of the bolts M4, l44a the :tools .can he slid forwardly or rearwardly relative to tool arm by a limited amount, the curva- :ture of the mounting faces I40, L42 providing for a tilting or cocking of one or both of the tools. Such angular adjustment of tool to carrying arm is of advantage in that it permits setting of the opposed tools to a desired angular relationship of their working faces, that is to say, the tools may "be set so that their working faces are in horizontal or inclined parallelism or are inclined to each other in directions as to ffect heavi r pouncing of the that brim either along its inner or crown edge or along its outer edge, whichever is desirable.

A preferred means of securing the pouncing sheets or cloths to the tool bod is also shown in Figs. 1, 7 and .8, As seen in Fig. 8, the tool body is provided along opposite edges with longitudinal recesses M1, Ala opening through its mounting face. The pouncing sheets are laid across the working face of the tool body and more particularly across the outer face of a felt pad I48 set into the tool body, the ends of the sheets being extended into the recesses. Clamping bars M9, 149a pivoted at their forward ends .to the tool body operate in said recesses, and in their lowered or clamping position function to clamp the ends of the sheets .against the recess bottoms. The clamping bars are each adapted to be releasably secured in clamping position by a locking lug or washer 150 carried .on a threaded bolt l.5l, being swingable thereon from a look ing to a bar clearing position. A wing nut I52 threaded on the bolt I51 serves both as a means to lock its lug I50 in clamp-bar securing position and to unlock the lug so that it may be swung ,clear .of the clamp bar, whereupon the bar may be raised as required to replace a worn pouncing sheet, for example.

The above described mounting of the tools and abrasive sheets is also of advantage in providing for interchangeability both of tools and abrasive, as required :fOr a machine capable of performing both back .and front-shop finishing operations, and as desirable in obtaining a variety of brim finishes.

.Preferably, the main housing, head casting and tool carrying arms are made from aluminum alloy castings, thereby to provide streamlined, lightweight construction throughout. Moreover, the main-housing and its head casting haverninimum dimensions consistent with design requirements, with the result that the machine as a whole requires small floor space and low floor loadings. Due to the mounting ofthe :entire weight of the machine on rubber, vibration, as is likely to ocoure with high tool speeds, is substantially eliminated and the life of the machine isaccordi-ngly ,prolonged.

Without further analysis, it will be appreciated that the machineas described achieves the stated objects and other practical advantages in providing a hat brim pouncing machine capable of being operatedat hightool speeds and which incorporates a novel and :practical drive transmission from -motor'to pouncing tools and brim feeding rollers, and an effective and simply operated means of applying relative separating vmo- -tion-both to saidtools .and brim ;feeding,rollers.

Moreover, the machine as described is simply operated and controlled lthrQlleh t e provision of L a needle ac uat d co t o apable o interrelati-ns he sepa ating and os ng i n ap lied to both the tools and the feed rollers. line control is so organized as to leave the hands of the operator free to insert and withdraw the brims of the hats being worked to and from the tools and feed rollers, with the result that a high rate of production as well as eilicient pouncing action isachieved.

As many changes could be made in carrying out the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown i th acc mpany g dr ng s al be interpreted as illust at ve and not in a im ingsense- I claim:

.In a hat brim fi ishing machine. in combination a pair o opp sitely disp se fi ish g tools for operat n on th pposite fac s of the brim of a hat inserted therebetween, a pair of tool c rr i arms, n m a s o i p ting operati g tion to said a m d hence o sai tools including a rotary eccentric camoperativel-y related to each .of said arms, means directly driving one of said cams and a splined driving connection extending between said cams and driving :the other of said cams from said one cam.

2. In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for p ra ing on th opp site fa s of h :brim of a hatinserted therebetween, a pair of tool carrying arms, and means for-imparting operating motion to said armsand hence to said tools including a rotary eccentric cam operatively related to each of said armaa drive shaft extending into and having a splined driving connection with one of said cams,and a splined driving connection extending between said cams and ,driving the other of said cams from said .one cam.

3. In a hat brim finishing machine; in combination, a pair-of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat i s rt d h re e e n, a p i of tool ca yh s arms, m a s m untingsaid rms t p vide both for tool motion in a closed, substantially elliptical path and fortool separating and approaching motion, and means for imparting .the aforesaid motions to said tools including a rotary eccentric cam operatively related to each of said arms, means for driving one of said cams, and an axially extensibledriving connection afiixed to the other of said cams and driving the same from said one cam.

4. I a hot bri f shi "ma in o bination, a pair of oppositely disposed finishing t o for ope a in on t e opp t fa es o t "b m of a hat inse ed th r bet een, a air of tool carrying arms, means mounting said arms to provide both-for tool motion in a'closed, subst t al l cal a h nd fo ol sepa n a d approach mot o a d means or c ati said arms to provide the aforesaid tool motions including a rotary eccentric cam operatively relatedtoeach of said arms, a driving shaft directly drivingone of said cams, and an axially extensible dr vin onne tion xed to e o e of said cams and driving the same from said one earn.

5. In a hat ibrim finishing machine, in combina on a pa f pos t y d sposed finis i tools for operating on the opposite faces of the b im of a a in e ted t eb t e a pa r of tool arr ng a ms ean o t n s id a ms v de ot o d-mo n ino d, su s ant a y e l pt ca p t an fo too sepa atin and approach motion, and means for actuating said arms to provide the aforesaid tool motions including a rotary eccentric cam operatively re lated to each of said arms, a driving shaft having a direct drive connection with one of said cams, and a floating shaft extension amxecl to the other cam and having a splined driving connection with said one cam.

6. In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a pair of tool carrying arms, means mounting said arms to provide both for tool motion in a closed, substantiall elliptical path and for tool separating and approach motion, and means for actuating said arms to provide for the aforesaid tool motions comprising a rotary eccentric cam operatively related to each of said arms, one of said cams being internally splined, a drive shaft having a splined driving connection with said one cam, a floating shaft extension affixed to the other cam and having a splined driving connection with said one cam, and means for applying separating and approach motion to the floating drive shaft extension relative to the drive shaft.

7. In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a air of tool carrying arms, means for actuating said arms so as to cause the tools to move in a closed, substantially elliptical path and in opposite directions including a drive shaft and a shaft extension mounted for axial movement relative to said drive shaft, and means including the axially movable coaxially disposed shaft extension for applying relative separating and approach motion to the tools.

8. In a hat brim finishing machine, in combition, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a pair of tool carrying arms, means for actuating said arms so as to cause the tools to move in a closed, substantially elliptical path and in opposite directions including a drive shaft and a coaxially disposed shaft extension mounted for axial movement relative to said drive shaft, said shaft extension supporting one of said tool carrying arms, and means for applying axial movement to the shaft extension thereby to impart relative separating and approach motion to the arms and tools carried thereby.

9. In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a pair of tool carrying arms, means for actuating said arms so as to cause the tools to move in a closed, substantially elliptical path and in opposite directions including a drive shaft having an axial bore and a shaft extension mounted for axial movement relative to the drive shaft, and means operative through the bore of the drive shaft for applying axial movement to the shaft extension thereby to impart relative separating and approach motion to the tools,

10. In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a pair of tool carrying arms, means for actuating said arms in such manner as to cause the tools to move in a closed, substantially elliptical path and in opposite directions including a rotary eccentric cam carried by each of said arms, a drive shaft having a driving connection with one of said cams, a coaxially disposed shaft extension aflixed to the other cam and having an axially extensible driving connection with said one cam, and means operative through the drive shaft and coacting with the shaft extension for effecting axial extension of its driving connection and a corresponding relative separation of the tools.

11. In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a pair of tool carrying arms, means for actuating said arms in such manner as to cause the tools to move in a closed, substantiall elliptical path and in opposite directions including a drive shaft for driving one of said arms, and an axially movable shaft extension having an extensible driving connection With said drive shaft for driving the other of said arms, spring means reacting against one end of the shaft extension, and means operative against the other end of said shaft extension for effecting axial movement thereof with respect to the drive shaft and a corresponding relative separation of the tools against the pressure of said spring means.

12. In a hat brim finishing machine, in combination, a pair of spaced and oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, a pair of tool carrying arms, means for imparting operating motion to said arms and hence to said tools including axially separable, rotary eccentric cams journaled for rotation in said arms intermediate the ends thereof, and means for adjusting the spacing between said cams.

13. In a hat brim finishing machine, in combination, a pair of spaced and oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat inserted therebetween, means for imparting operating motion to said arms and hence to said tools including axially separable, rotary eccentric cams journaled for rotation in said arms intermediate the ends thereof, means for setting the spacing of the cams, and means for adjusting said spacing b calibrated amounts.

14. In a hat brim finishing machine, in combination, a pair of conical rollers adapted to grip a hat brim therebetween and to impart a rotary feed motion thereto, spindles mounting said rollers and being each journaled for rotation in complemental and hingedly connected upper and lower spindle housings, respectively, spindle driving means contained in said housings and said upper housing being mounted for separating and approach motion relative to the lower housing thereby to effect corresponding separation and approach motion of the rollers.

15. In a hat finishing machine, in combination, a pair of conical rollers adapted to grip a hat brim therebetween and to impart a rotary feed motion thereto, spindles mounting said r011- ers and being each journaled for rotation in complemental upper and lower spindle housings, respectively, spindle driving means contained in said housings, a hinge connection between said housings whereby the upper housing may swing relatively of the lower housing, and means for imparting swinging motion to said upper housing in both opening and closing direction thereby to effect corresponding separating and approach motion of the rollers.

16, In a hat brim finishing machine, in combination, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat received therebetween, means for imparting operating motion to said tools, means for effecting separation of the tools so as to permit insertion and removal of the hat brim, a pair of feed rollers adapted to impart feed motion to the hat brim, means for effecting separation of said feed rollers so as to permit insertion and withdrawal of the hat brim, and means interrelating the action of said tool and roller separating means in such manner that the tools separate prior to the separation of the feed rollers and that the tools return to their normal working position subsequent to the return of the feed rollers to their normal working position.

17. In a hat brim finishing machine, in combination, a pair of oppositel disposed finishing tools for operating on the opposite faces of the brim of a hat received therebetween, means for imparting operating motion to said tools, means for effecting separation of the tools so as to permit insertion and removal of the hat brim, a pair of feed rollers adapted to impart feed motion to the hat brim, means for effecting separation of said feed rollers so as to permit insertion and withdrawal of the hat brim, a foot treadle, and means responsive to depression of the foot treadle for actuating both said separating means and for effecting the actuation of the tool separating means prior to the actuation of the roller separating means.

18. In a hat brim finishing machine, in comnation, a pair of oppositely disposed finishing tools for operating on the opposite faces of the brim of a hat received therebetween, means for effecting separation of the tools so as to permit insertion and removal of the hat brim, a pair of feed rollers adapted to impart feed motion to the hat brim, means for efiecting separation of said feed rollers so as to permit insertion and withdrawal of the hat brim, spring means operative normally to maintain the tools and feed rollers in their closed or working position, a control treadle for actuating both said tool and said roller separating means, and means whereby de pression of the treadle effects actuation of the tool separating means prior to the actuation of the roller separating means.

19. In a hat brim finishing machine, in combination, a pair of arms each mounting a finishing tool at its free end, the tools being disposed to operate on the opposite faces of the brim of a hat received therebetween, the mounting faces of the arms and tools being complementally convex and concave whereby the tools and their working faces may be inclined to the horizontal plane.

20. In a hat brim finishing machine, in combination, a pair of arms each mounting a finishing tool at its free end, the tools being disposed to operate on the opposite faces of the brim of a hat received therebetween, each said tool comprising a. body having working and mounting faces and being provided with longitudinal grooves extending along the side edges of its mounting face, an abrasive sheet extending across the working face of the body with its ends extending into said grooves, clamp bars pivoted at their one ends and operative in their locked position to clamp the ends of the sheet against the groove bottoms, and releasable means coacting with the other end of the clamp bars for locking the clamp bars in their locked position aforesaid.

D. IVAN BEHMER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 518,661 Brush Apr. 24, 1894 581,870 Peck May 4, 1897 1,774,173 Doran Aug. 26, 1930 2,178,154 Wells Oct. 31, 1939

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