US2137250A

US2137250A - Pouncing machine

Info

Publication number: US2137250A
Application number: US86484A
Authority: US
Inventors: Schultze Paul
Original assignee: JOHN C DORAN
Current assignee: JOHN C DORAN
Priority date: 1936-06-22
Filing date: 1936-06-22
Publication date: 1938-11-22
Anticipated expiration: 1955-11-22

Description

NOV 22, 1938- P. scHuL'rzl-z v 2,137,25

PoUNcING MACHINE Filed June 22,l 1936 4 Sheets-Sheet l v "lNvENToR BYPauZ .Schultze @/Q'MLL/ @awe ATTORNEYS Noir. 22, 1938. P.. sczHuLTzE 2,137,250

- POUNC'ING MACHINE Filed June 22, 1936 n 4 Sheets-Sheet 2 INVENTOR geul Schulz www @MMQ i ATTORNEYS Nov. 22, 1938. P, sHULTzE PoUNcING MACHINE Filed Julie 22, 1936 4 Sheets-Sheet 5 n v ATTORNEYS Nov. 22, 1938. P. scHuL-rzE Y POUNCING MACHINE FiledA June 22, 1956 4 Sheets-Sheet 4 INVENToR Paul Schulze ATTORNEYS Patented Nov. 22, 1938 PATENT OFFICE POUNCIKNG MACHINE Paul Schultze, VRose Hill, Danbury, Conn., as-

signor to John C. Doran, doing business as Doran Brothers, Incorporated, Danbury, Conn.

Application June 22, 193,6, Serial No.` 86,484, c

14 Claims.

This invention relates to a machine for pouncing or nishing hat bodies.

` One of the objects Vof thisy invention is to provide a machine for finishing hat bodies which is simple in construction, efficient in operation and sturdy and durable under conditions of rigorous use. Another object is to provide a machine of the above nature which may be efficiently operated by unskilled labor. machine of the above nature wherein several yof the operating parts are actuated hydraulically. Other objects will be in part apparent and in part pointed out'hereinafter. f

The invention accordingly consists in the features of construction, combinations Vof elements, and arrangements of partsas will be exemplified in the structure to be hereinafter described and the scope of the application ofwhich will be indicated in the following claims.

In the accompanying drawings in which is shown one of the various embodiments of my invention,

VFigure 1 is an elevation of one side of my machine;

Figure 2 is an elevation of the other side of my machine; Y

Figure 3 is an enlarged front elevation of the pouncing tool assembly of the machine a portion thereof being shown in section;

Figure 4 is a sectional elevation taken along the line 4 4 of Figure 3;

Figure5 is an enlarged perspective View" of the feeding mechanism for` the pouncing paper;

Figure 6 is an enlargedplan view of the mounting for the pouncing toolV assembly; 1

Figure? is anenlarged elevation of a portion o the hydraulic system, certain parts thereof being shown in section; and

Figure 8 is an -enlarged fragmentary elevation of part of the paper feeding mechanism, portions thereof being shown in section.

Similar reference' characters refer to similar parts throughout the several views of the drawings.

In general and with reference to Figure 1, the pouncing'machine comprises a column generally indicated at I formedby a base section II, a motor housing I2 and a head I3.-V A shaft I3lJL` is journaled in head I3 and hassecured on one end thereof a chuck generally indicated at III which receives a hat blockV I on which a hat body I6 may be mounted. Preferably shaft I3a is adjustable axially by any suitable mechanical instrumentality (not shown). such asis described in my copending application VSerial NumberV 5,757, led

Another object is to provide a February 9, 1935, in order to change the position of chuck I 4 to accommodate hat blocks of different depths. On the other end of'shaft I3a is a driven pulley ,I1 connected by means of `a belt i'to a driving pulley I9 associated with a clutch 5 Y generally indicated at 20. Clutch 20 is driven by a motor 2| mounted in' housing I2 andthus shaft I3 maybe driven to rotate hat block I5. Motor 2l also drives an `oil pump 22 by

means'of pulleys

23 and 24 and belt 25,011 pump 22 preferably being mounted in the upper` partl of section II of columnIIl. v. "j

Rotatably mountedon a bracket generally indicated at 26 (Figure 1) secured to and extending from sectionA II is a pouncing tool assembly gen- Y erally indicated at 21 which is movable about and toward and away from hat block I5 through instrumentalities to be described hereinafter. Bouncing tool assembly 2'! includes a pouncingv tool and adriving mechanism therefor as will also bedescribedin detailhereinbelow. Y

Oil pump 22 (Figure 41), supplies oil under pressure `to aA hydraulic `piston reciprocably disposed in a cylinder 35 secured to the lower part of vsecftionl II Aof the machine column. A piston rod` 60 vextends through a gland 6I on cylinder 35 and has connectedthereto a rack 62 supported by a guide 63 securedtoV bracket 26. VPouncing tool assembly 2l is mounted on Va vheavy pin or stud 64 which is rotatably journaled in a suitable Yhousing 26a' or the like which may be anintegral part of bracket 26 kvorfconnectedthereto in any suitable manner. Preferably stud 64 has gear teeth (not shown) cut-V thereon vwhich mesh with an idlergear (not shown) which in turn `meshes with the teeth of rack'62. Thus reciprocation of rack 62 causes rotation of stud 64 and accordingly rotation of pouncing tool assembly 2l; For a more detailed disclosure and description of these parts, reference is made to my above-notedcopending application.

`As is more clearly shown in Figures 2 and'6, a collar generally indicatedat 65 is secured to the top of stud 64 (Figure 2) so as to berotatable Ytherewith and from this collar extends a bracket portion 65a. As is more clearly shown in Figure 6, bracket portion 65a; is provided with arms 65h, eaclf of which has a cut out portion 650 (Figures 1 and 2).' A'v resilient strip 235 ,(Figure 6) is secured to each of arms 65h in'cut out portions 65C thereofV (see Figure 2),, screws 236v (Figure 6) holding the strips'in place. The free ends of -strips"235 have secured', respectively thereto'the v legs 61a. and '61h' of bifurcatedpart 61 which is provided witha borefsw receiving a pints.v A set screw 231 extends through part 61 and bears against pin 68 to hold the pin and the part in nonpivotal relationship. The lowermost part of pouncing tool assembly 21 (Figure 3) comprises a supporting member 238 including bored portions 23801,` and 2385 which are pivotally mounted about pin B6. It may now be seen that pouncing tool assembly 21 is resiliently mounted with respect to assembly stud 84 (Figure 1) and this for a purpose pointed out hereinafter.

Preferably the bored portion of bfurcated part 61 (Figure 6) has extending therefroman arm 61d which forms an abutting member engageable with the top of one of arms 85h of bifurcated part 65a to limit the movement of the pouncing tool assembly 21 resulting from the resiliency of Strips 235.

Referring to Figure 3, pouncing tool assembly 21 is preferably built up of several cast housings or the like and accordingly comprises a crank case-21a, a cross head guide housing 21h, a paper roll support 21o (see also Figure 1) and a pad guide bracket 21d, all of which will be described in greater detail hereinafter. Crank case 21a issecured to supporting member 238 and accordingly pivotal movement about pin 66 causes swinging of the entire pouncing tool assembly toward or away from the hat block.

Crank case 21a is provided with

bores

68 and 69 in which are disposed

roller bearings

10 and 1|. Disposed respectively within

bearings

10 and 1| are outer spacer 12 and inner spacer 13, these spacers each being provided with a bore which journals a motor shaft extension 14. Inner spacer 13 hasa large bore 13a. which forms a shoulder 13b against which an enlarged portion 14a of shaft 14 abuts when shaft 14 is properly positioned in the spacers. The other end of shaft 14 is preferably threaded to receive lock nuts 15 which, when taken up against outer spacer 12, securely hold shaft 14 in its operative position in the spacers. Preferably I provide acap 16 which is secured to the outer side of crank case V21a'. by means of screws 11, this cap preferably including portions 1611i which rest against the outer race of bearing 10 to hold the bearing in its proper operative position. Bearing 1| is held in its proper operative position by a suitable shoulder former on inner spacer 13.

Mounted on shaft 14 and rotatable therewith is a main crank disc 18 on the opposite sides of which are smaller crank discs 19 and 88 which are also secured to shaft 14. These three crank discs are centered on shaft 14 between

spacers

12 and 13 by a part 8| disposed between the inner race of bearing 10 and the crank disc 19 and by another part 82 similar to part 8| disposed between the inner race of bearing 'H and crank disc 88. Parts 8| and 82 also conveniently pro- Vide means for throwing oil about the interior of crank case 21 and thus lubricate the parts rotating therewithin while at the same time preventing excessive oil from entering

bearings

10 and 1| which require only a film of lubricant. Bearing 1| and accordingly part 82,

crank discs

18, 19, and part 8| are conveniently held in position in the crank case by means of an annular part 83 which bears against the outer race of bearing 10 and is secured to the crank case by means of screws 84. Preferably I provide an oil seal 85 between inner spacer 13 and annular part 83 to seal lubricant within` the crank case.

Crank case 21a is also provided with a motor (not shown) of this motor being connected to shaft 14 (Figure 4). Referring again to Figure 4, I provide a ball bearing 88 on crank disc 19, a ball bearing 89 on crank disc 18 and a ball bearing 99 on crank disc 80. Mounted on these bearings respectively are connecting rods 9|, 92 and 93 in the upper portions of which are respectively disposed

wrist pin bushings

94, 95 and 96 through which

wrist pins

91, 98 and 99 respectively extend. A pair of balancing rods |00 and |0| having bifurcated lower ends are connected to connecting rods 9| and 93. Thus the bifurcations of balance rod |00, for example, lie on opposite sides of the upper end of connecting rod 9| and wrist pin bushing 94 and are suitably bored to receive wrist pin 91. Balance rod |0| is similarly related to crank shaft 93. Preferably the bifurcations of these balance rods closely lit the opposite sides of their respective connecting rods and wrist pin bushings so as to allow a minimum amount of play therebetween.

Balance rods |00 and |0| are preferably of bronze and are provided for a purpose to be described more fully hereinafter.

A reciprocating rod |02 extends upwardly through cross head guide housing 21b and has its lower end bifurcated and secured to the upper end of connecting rod 92, the bifurcations of this rod preferably closely fitting the sides of the upper end of connecting rod 92 and the sides of wrist pin bushing 95. Wrist pin 98 extends through the bifurcations of rod |02 and is secured thereon by means of a suitable screw |03 or the like threaded into the wrist pin. Preferably the lower end of rod |02 is dimensioned to have a substantially close sliding t between the lower ends of balance rods |00 and |0| thus, in effect, the lower ends of the balance rods constitute a guide for the lower end of the reciprocating rod.

In the upper portion of cross head guide housing 211) I provide a rod guide |08 in which are moimted suitable bushings |04, |05 and |08 which slidably receive balance rod |00, reciprocating rod |02 and balance rod ||l| respectively. Preferably reciprocating rod |02 is a hollow tube fabricated from a light but strong material such as, for example, Dow metal, an alloy comprising about 971/2 per cent magnesium and about 21/2 per cent aluminum, thus providing a rod which is light in weight though extremely rigid. In order to avoid excessive and rapid Wear of rod |02, the portion thereof which reciprocates within bushing |95 is preferably smaller in diameter than the diameter of the bushing and is coated with hard steel which is ground to the size of the bushing, thus providing a bearing surface that will stand long and rigorous use. 'I'he upper end |02a of rod |02 is similarly treated and is received in a bushing |01 disposed in the upper portion of rod guide |08 which extends through paper roll support 21o and is secured to l cross head guide 21h by a bolt |08a (Figure 3). Upper end |02a of hollow rod |02 is preferably threaded to receive a pad supporting rod |09 (Figure 4) the lower end of which has a shoulder IUS-a on which is mounted a ball bearing ||0. The upper end |09b of rod |09 is preferably reduced and has mounted `thereon a ball bearing which facilitates the swiveling of a feeding pad frame 5 as will' be more fully explained hereinafter.

Paper roll support 21e (Figure 4) is provided with an upper annular bearing ||2 which bears against the outer surface of rod guide |08. The

lower end of support 21o receives a ball bearing 7'5.

H3 which is held in the support by a washer H4. The inner race-of bearing H3 restsupon the top of cross head guide housing 21h and thus paper roll support 21e land pad frame H5 are free to pivot about rodguide |08. n

Feeding padframe H5 is provided with portions |5a and Hbwhich t about ball bearings H and IH respectively Vto provide a pivotal relation between frame H and pad vsupporting rod |09. Frame I I5 is heldin its operative position by a pair of lock nuts I I6 threaded onto the upper end of pad supporting rod |09, and these nuts when taken up hold frame l| I5 against the top of ball bearing H0 which in turn is held against the top of reciprocating rod |02. It will also be noted that frame I I5 has a cup shaped portion ||5c which fits over the upper end of rod guide |08 so that upon reciprocation of rod |02 guide |08 extends into cup portion ||5c of frame H5. Extending from portion I |5c I preferably provide aguide. portion ||5f which slides against an impregnated wood guide block 21e during operation of the pouncing tool. Guide block 21e is secured in frame gui-de 21d in any suitable manner. As may be seen from the above, paper roll support 21e and pad frame H5 are pivotally related to rod |03 by bearings H0, H2 and H3 so as to facilitate swiveling of the pouncing pad as it passes over the square of the hat body for example.

As is more clearly shown in Figures 1 and 3,

paper support 21e has extending therefrom a w pair of brackets I I1 on each of which are formed bosses H8 and H9, having coaxial bores extending therethrough. Disposed within these bores is a paper roll supporting pin |20 (Figure 4) which rotatably carries a roll of sandpaper |2I. Preferably boss H8 is provided with a slot I|8a (Figure 3) which receives an extending arm |220.

ofaa spring' |22 (see Figure 2,) secured to one of brackets H1. Arm |2211. when positioned in slot lHd (Figure 3) fits into a depression (not shown) formed in the end 'of pin |20 to prevent casual displacement of the pin. `vWhen the roll of sandpaper |2| becomes exhaustedarm |22a may be lifted out of place to permit withdrawal of pin |20 so that anew roll of sandpaper may be installed.

' Bridging the space between the lower portions of brackets H1 is a pin |23 (Figures 3 and 4) having secured thereto a friction blade hub |24.

spring |31 is provided with a small slotted button |31.V A yoke like latch |39 is movably mounted in the rear part of pad frame H5 and adapted to engage the slotted button |31a. Associated with the rear portion of pad frame H5 is a paper guide strip |40, fastened to the pad frame at the lower end at |40a and the upper end at |405 (Figure 4). It may thus be seen that the action of springy |31, when engaged with latch |39 forces the roller |35 against paper guide strip |40, 'clamping the sandpaper yieldingly therebetween.

Secured to the top portion ||5b of pad frame 'H5 is a top paper guide |4| and to a front portion ||5e of frame H5 is secured a pouncing pad |42, preferably of sponge rubber or the` like. Extending from frame H5 and below pouncing pad |42 are a pair of projections I 43 (Figures 1, 2 and 4) and in and between these projections are rotatably mounted toothed feed drums |44 and |45 (Figure 4) these feed drums being driven lby a mechanism to be described It may now be seen lfrom the above and with reference yto Figure 4 that afterv the sandpaper leaves roll I2| and is fed over guide roller I 25 it extends between guide roll |34 and Iguide strip I 40a, between friction roll |35 and guide strip |40, up and overv the surface of guide strip Y |40 over top guide strip |4|, down over pouncing pad |42 and between the toothed feed drums |44 and |45 upon actuation of which the paper is automatically fed fromv rollr |2I. j

As'has been pointed out above, pouncing tool assembly 21 (Figure 1) is pivotable toward and away rfrom hat body |6 `and is also movable about' the hat body so as to Contact it over a path extending substantially from the apex of the hat to the brim portion thereof. Because of the frusto-conical shape of the hat body it is important that the ,pressure of the pouncing tool thereagainst be varied during the travel of therr pouncingtool. To `this end, as is most clearly shown in Figures 1 and 2, I provide an arm |45y which is revolubly mounted on pin 65 (Figure 3) which carries tool assembly 21. Arm |46 (Figure 1) is preferably T-shaped .and on the lower portion |4611 thereof is rotatably mounted a roller |41 while the upper portion |462) thereof is preferably provided with a pin |48 or the like for a purpose described below. A cam |49 is adjustably secured to the top of Vhousing 26a by a bolt |50, the surface of this cam being designed in accordance with the shape of the hat block |5 being used, and it is upon the upper surface of this cam that roller |41 of arm |46 rides.

A bracket |5| (Figure 1) Yextends from crank case 21e'l to provide a mounting for a leaf spring |52, the `end of which is borne by stud or pin |48 located in end-portion |4611 of arm I 40. Thus it will be seen thatthe extremities of T-arm lie between and Contact the top surface of camV |45 andthe end of leaf spring |52. Thus when tool assembly 21 is rotated by the action of rack E2, which is impelled by the piston in cylinder 35, in the direction of the downward slope of cam |49, arm |45 pivots about pin 65 (Figure 3) so that the tension in leaf spring |52 (Figure 1) is relieved thus permitting tool assembly 21 to pivot toward hatfbody I5 to bring the pouncing tool into contact with the surface of the hat body. ItA

may alsoY be seen that when roller |41 rides up carn` |49, arm |46 is pivoted counterclockwise thus tensioning spring |52 whichcauses tool assembly 21 topivotaway from theghat body. Preferably 75Y surface of the hat body at the apex thereof, upon its return stroke, arm |46 is pivoted upwardly at a faster rate so as to remove the pouncing tool from the surface of the hat body.

Preferably I provide an arm 300 (Figure 1) secured to the bottom of tool assembly 21 which abuts against an adjustable stop 30| mounted on T-arm |46 to limit the swinging'movement of assembly 21 toward the hat block.

While tool assembly 21 (Figure 1) tends of its own weight to swing toward hat body I6, its weight is not sufficient to overcome the tension of leaf spring |52 to bring the sandpaper covered pouncing pad |42 into contact with the surface of the hat body. Accordingly to urge the pouncing pad and sandpaper into contact with the hat body, I have provided a coiled spring |53 (Figure 2). Spring |53 is preferably disposed in a drum |54 and is anchored to. the drum and supporting pin 66, as is more clearly shown in Figure 3, to constantly impel tool assembly 21 (Figure 1) toward the hat body, drum |54 being revolubly associated with pin 66 in any suitable manner for a purpose to be described hereinafter. Thus coil spring |53 may be termed a tension spring whereas leaf spring |52 (Figure l) may be termed a tension relief spring and by adjusting the effective tensions of each of these springs the pressure of pouncing pad |42 against hat body I6 may be given any one of a wide range of Values.

To effect the adjustment of the pouncing-pad pressure against the hat body I provide a rod |55 (Figure 1) having a threaded portion |55a.. The end of threaded portion |55a of rod |55 is revolubly mounted in a bracket |56 while another portion of this rod is borne in spring supporting bracket |5|. The Unthreaded end of rod |55 has secured thereto a hand wheel |51 or the like and preferably disposed between the hub of this wheel and bracket |5| is a cup shaped housing part |53 which houses a coiled spring |59 disposed about rod |55. Spring |59 is preferably an expansion spring and forces the closed end of cup |58 against the hub of hand wheel |51 thus constituting a friction brake to prevent casual turning of the hand wheel and rod |55. Threadably received on the threaded end `of rod |55 is a nut |60 having secured thereto a pointer I6 Pointer 16| registers on a graduated scale mounted on the surface of crank case 21a so as to indicate the value of effective tension in spring |52. Nut |60 also includes a portion (not shown) on which the under surface of leaf spring |52 rests. Thus by manipulating hand wheel |51, nut |60 may be moved in one direction or another to vary the effective pressure of tension relief spring |52.

As mentioned hereinabove, tool assembly 21 is given its rotary motion through a hydraulic instrumentality, namely cylinder 35 and accordingly the hydraulic system will now be described.

With reference to Figure 1, oil pump 22 is provided with an intake pipe 28 (see also Figure 2) which sup-plies the pump with oil from a reservoir or sump (not shown) located in the lower part of section of columnv I0. Leading from oil pump 22 is an oil outlet pipe 20 (Figure 1) connected to a metering valve generally indicated at 36. A direction control valve 3| is connected to metering valve 30 by means of a pipe 32 and connected to direction control valve 3| are pipes 33 and 34 which are connected to the opposite ends of cylinder 35. An exhaust pipe 36 is connected tothe lower part of direction control valve 3| and is also connected by way of T-joint 31 (Figure 2) to the oil reservoir in section of the machine column.

Referring again to Figure l, aA relief valve 38 is also connected to oil pump 22 and this relief Valve is connected by Way of a pipe 39 (Figure 2) to T-joint 31 and accordingly to the oil reservoir in section of the column.

Direction control valve 3| (Figure 1) has disposed therein a plunger (not shown) which is moved vertically upon movement of a plunger rod 40 which is in turn actuated by a hand lever 4| pivotally mounted on housing l2 of the column by a pin 42. Lever 4| conveniently is a bell crank lever the lower end 4|c1l of which is connected to a rod 43 slidably extending through a pair of brackets 44 and 45 secured to housing |2. Disposed between brackets 44 and 45 and about rcd 43 is a return spring 46, this spring being effective to return lever 4| to its original position after the lever is operated to force plunger rod 40 downwardly. When plunger rod 40 is forced downwardly, it is held in this position by a lever 41 having on its lower end a detent (not shown) -which catches on a shoulder 46a formed on plunger rod 40. Thus oil under pressure is directed through pipe 34 to the left-hand end of cylinder 35, as Viewed in Figure l, causing left to right movement of rack 62.

An adjustable abutment |68 (Figure 1) is mounted on piston rod 66 for travel therewith and during the left to right travel of rack 62, and accordingly piston rod 60, abutment |66 engages one end |60a of a bell crank lever |63 which is pivotally mounted on section of machine column |6. Further movement of abutment |63 pivots lever |69 causing upward movement of another arm |691) thereof to which is attached a reversing rod |10, the upper end of which is borne in a guide |1| secured to column E6. As the end of the stroke of piston rod 60 is approached (at which time pouncing pad |42 is adjacent the brim portion of hat body I6) reversing rod |10 is raised (through the coaction of abutment |63 and bell crank |69) sufciently to engage lever 41 so as to disengage the detent (not shown) on the end thereof from shoulder 40m of plunger rod 45. It is apparent that the reversing of piston rod 60 may be advanced or retarded according to the position of abutment |68.

A spring (not shown) in reversing Valve 3| forces the Valve plunger (not shown) upwardly so as to change the direction of flow of oil from pipe 34 to pipe 33 thus yintroducing the oil under pressure into the other end of cylinder 35 causing right to left movement of cylinder rod 60 and accordingly rack 62. Thus tool assembly 21 is rotated in its return direction of travel passing substantially through an angle of 180 degrees measured from the brim portionV of the hat so that the tool ultimately assumes a stationary position spaced from the hat body. When this position is reached, further movement of the piston in cylinder 35 is impossible and `oil fromfpump 22 bypasses through relief valve 38.

Under certain circumstances, it may be desirable to reverse the direction of travel of tool assembly before it reachesthe-end of its forward stroke adjacent the brim portion of the hat body. To effect such premature return, I provide a hand lever |12 secured to a bell crank lever |13 pivotally mounted on the upper portion of section l of the machine column. Counter-clockwise movement of lever |12, as viewed in Figure 1, causes end |13a of the bell crank lever to rise and engage lever 41 thus disengaging the detent (not shown) mounted thereon from shoulder 40a of valve plunger rod 40 causing the valve to effect a reversal of fluid flow.`

Under certain conditions, it is desirable that the feed rate of the pouncing tool over the surface of a hat body vary during its forward travel and during its reverse travel so that the pouncing paper contacts certain portions of the hat-body a less amount than other portions thereof. In the interests of economy of time it is also desirable to effect a quick returnof the pouncing tool from the apex of the hat body to its inoperative position where it is spaced from the hat body.

To effect automatically this varying feed rate I have provided a cam |14 (Figure 1) which is secured to the top of and travels with rack 62. Cam

|14 travels under a roller |15 mounted on ano-ther arm |69c of lever |69 thus causing pivoting ofV bore which threadably receives a speed adjusting screw 5| which is provided with a head Alilo.. Secured to one end of screw 5| is a pointer 52 which indicates the position of head 51a by pointing to indicia (not shown) on the face of dial 50. Screw 5| and the bore in dial 50 are so threaded that relatively small rotation of the screw effects substantial axial movement thereof in one direction or the other, this adustment being provided for a purpose to be described hereinafter.

With reference to Figure 7, uid under pressure flows through pipe 29 into a chamber 36a of metering valve 30. Chamber 30a is provided with an outlet port 30h in which a spring actuated piston 53 (partly shown in section) is slidably received. Piston 53 is provided with a longitudinal tapered groove 53a on its circumference and an outwardly extending stem 53h which abuts a push rod 54. Stem 53h is sealed in a portion 311e of valve 30 by a cap 55 and a suitable oil seal 55m.

Valve 30 is suitably mounted on a bracket 56 (seee Figures l and 7) secured to section of the machine column. Secured to bracket 56 and eX- tending therefrom, I provide a preferably U- shaped bracket 51 (Figure 7) which has a threaded bore 51a extending therethrough. Suitably threaded into bore 51a is an adjusting screw 58 suitably bored to receive push rod 54. Push rod 54 preferably has a head 54a thereon adapted to abut against the adjacent end of screw 58. It may' `other surfaces ited, in that push rod 54 and accordingly collar 54a thereoncan slide through screwV 58 until collar 54a abuts thereagainst thus limiting the closing movement of valve piston 53 and stem 53h.

The outer end of push rod 54Y (Figure 7) is adjacent head 5|a of screw V5| and according to the position of head 5|a with relation to dial 50, head 5|a abuts the end of push rod 54 sooner or later during the pivoting ofbell crank |69. Thus it is possible t'o provide a dwell at the end of the forward feeding motion of the pouncing tool because screw 58 can be set so that, when head 54a abuts the end of the screw, port 30h of the valve 30 is c dial 50, that is, the screw may bemanipulated to retract head 5|a thereof so that when head 54a' of push rod -54 abuts the end of screw 58 continued movement of lever|69 separates the engagement of head 5|a`and the adjacent end of push rod 54. It will also be seen that the dwell can be avoided by manipulation of screw 5| to push head 5|a thereof away from the adjacent side of dial 50 thuspreventing the substantially complete closing of the valve 30-as bell crank |69 reaches the end of its pivotal movement. It is advantageous to provide this dwell so thatV the pouncing tool |42 (Figure 1) may operate on the band portion of hatbody I6 longer than upon thereof, the band portion of the hat often being the most difficult part thereof to pounce.

It may also be seen that depending .upon the position of pouncing pad |42 in relation to the surface of hatbody I6 and consequently the position of cam |14 and lever |69, lthe orifice in metering valve 30 is greater or smaller to effect the desired rate of ow of the oil and accordingly effect the feed rate of the pouncing tool. For a more detailed descriptionV of certainA features of the hydraulic system employed in my pouncing machine, reference is made to my above-noted copending application, Serial No. 5,757, led February 9, 1935. f Y

As noted above, the mechanism encased in tool assembly 21 .includes crank

discs

18, 19 and 80 (Figure 4) and rods-|02, |00 and |0| (Figure 1) which are connected respectively thereto, these crank discs being rotated by motor 81. Preferably reciprocating rod |02'is reciprocated at a high rate of speed which maybe as high as, or higher than 3600 reciprocations .per minute. In order to dampen the vibration naturally en,- suing from suchrapid reciprocation, and prevent rapid deterioration of the mechanism, balance rods |00 and |0| and their respective crank shafts and crank discs and wrist pins are so proportioned as to exactly equal in weight the weight of reciprocating rod |02, its crank shaft, wrist pin and crank disc, pad frame |15 and all of the various parts secured thereto about rod |09.

In order to maintain this perfect balance I have found it desirable to mount' the roll of sandpaper |2| stationary relative Yto pad frame- ||5 and accordingly a feed mechanism for the sandpaper is provided which will be described in called splash system.

. guide 21b Vby a bracket'or clamp |81.

Thus the bottom-'of 'crank case 21a (Figures-3 and 4) conveniently forms a reservoir `into which a suitable lubricant may be introduced in'any convenient manner. VPreferably an oil gauge |16 (Figure 3) is secured to crank case 21a in a position to indicatethe oil level within the crank case. As pointed out hereinabove, parts 8| and 82 (Figure 4) are so formed as to supplement the splashing action of crank

discs

18, 19 and 89 and accordingly act as lubricant throwers to throw oil or other suitable lubricant up into cross head guide 21h to lubricate the several wrist pins and bearings of balance rods and |0| and reciprocating rod |02. These lubricant throwers 8| and 82 also prevent excess lubricant

fromreaching ball bearings

19 and 1|. Preferably I provide -a pair of elbow breathers 41 which are secured to the upper portion of cross head-guide V21, these breathers providing ventilation for-the interior ofthe cross head guide and crank case-21a.

In order to effect a regular feed of sandpaper from roll |2| over` pouncingpad'l42 (Figure 1), I provide a feed mechanism comprising a feed operating rod |11'-which is slidablyreceived in a guide bracket |18 (Figure 3) secured'to one end of stud 66. The lower end of feed rod |11 is provided with a cam piece |19 (Figure 1) for a purpose to be described hereinafter. The upper end of rod |11 has a'pair of'collars |89 and |8| (Figure 3) secured'thereto and between these collars a guide sleeve-|82 is slidably disposed on the rod, Va spring |83 constantly urging guide sleeve |82 upwardly against collar |8l. -Guide sleeve |82-ispivotally-connected' to'a lever l|84 (Figure/1) which is, in turn, secured to a Vshaft |85 rotatably mounted in `a bearing |88 (Figure 3) secured to the upper'portion of cross head On the left hand end of `shaft' |-95,-as viewed in Figure 3, there is secured -a-pawllifting arm |88,-which as 'is more clearly shown in vvFigure 5 has a roller |89 rotatably mounted thereon. Y

It may now be seen that when feed rod |11 (Figure 5) is forced upwardly, lever |84, shaft |85 and arm |88 are given a clockwise movement, as viewed in Figure 5, causing roller |89 to rise against sliding arm shoe |92 which in turn causes arm |9| to ride upwardly forcing pawl |91 into engagement with ratchet wheel |98. Through the medium of gears 299 and 29|, feed drums |44 and |45 are rotated respectively in counterclockwise and clockwise directions upon reciprocation of the pouncing pad, and a piece of sandpaper lying between the feed drums, as shown in Figure 4, is pulled therethrough to the extent of one notch on ratchet wheel |98 for each reciprocation of the pouncing pad. To -prevent backward feed of the sandpaper I have provided a spring urged pawl 292 (Figure 2) which prevents reverse rotation'of ratchet |98. v

Every time rod |11 (Figure 1) is pushed upwardly, sandpaper is fed from roll |2|. This feeding action takesV place during the reciprocation of pouncing pad |42 which causes ratchet |98 (Figure 5) to engage pawl |91 for each stroke of the pouncing pad when arm |9| is in its raised position. Rod |11 and accordingly-arm |9| are raised every time-carnpart |19 rides over Ya roller 293 which is secured to a bracket 2Gb mounted on the top-of housing 26a and the cam part rides over this roller twice duringeach cycle of operation of the pouncing tool. Preferably bracket 2Gb (Figure 1) is provided with a plurality of holes 26o in any one of .whichroller 293 may be secured to advance or retard the feeding of thesandpaper. However, due to the extremely rapid` reciprocation of the pouncing pad, more sandpaper would be-fed than is necessary to replace worn paper were the feeding mechanism to operate twice during each operating cycle ofthe pouncing tool assembly.

Under certain circumstances it might be desirable to effect a complete change of sandpaper upon pouncing pad |42; such a change being readilyeiected by manually raising arm .|9| (Figure 2) during the operation of pouncing-pad motor 81 until the rapid reciprocation of pouncing pad and its Connected parts have caused the feeding of as much sandpaper as desired.

To automatically stop the rotation of the'hat block |5 and the reciprocation of the pouncing pad after completion of the pouncing operation on each hat, I provide a shut-off mechanism which is most clearly shown in Figure 2. Extending through suitable bosses 26d and 26e formed in bracket 28 I provide a shaft 294 which has mounted on the upper portion thereof a lever 295. On the lower portion of shaft 294 is secured a dog 296 and a collar 291, between which is a bell crank lever 298, one projection 298a thereof lying in the path of a projection 84a (Figure l) on tool assembly stud 64. The other arm 2885 (Figure 2) of bell crank lever 298 preferably extends from the shank of the lever to abut an adjustable screw 299 extending through the end of dog 296 when bell crank lever 298 is pivoted by abutment 64a (Figure 1) on stud 84 to contact bell crank lever arm 298a.

Lever 295 (Figure 2) has pivotally secured to the end thereof, one end of a rod 2|0, the other end if which is pivotally secured to an arm 2| la 75 of a bell crank lever 2| I pivotally mounted on section of themachine column. The other arm 2I|b of bell crank lever 2H is pivotally connected to an. operating rod 2| 2 which extends upwardly to a pivot block 2|3, pivot block 2I3 being connected to a lever arm 214 which is, in turn, connected tothe outer end of a s-haft or stud 2|5 pivoted to the machine column. The inner end of stud 2I5 has secured thereto a crank arm 2|6 which lies between two pins 2|1 extending from a clutch operating rod 2|8. Clutch operating rod 2|8 extends through and is borne by a bracket housing 2 I9 mounted on motor housing I2, clutch rod 2|8 having secured theretoa fork 229 having bifurcated arms 22|,

the ends of which lie in a grooved clutch shifting part 222 extending into clutch 21|.

Returning to pivot block 2| 3, there is also pivoted thereto a block 223 to which is secured a rod 224. Rod 224 is pivotally connected at its upper end to one arm 225:1 of a bell crank lever 225, the other arm 22511 of which receives an operating lever 225. Bell crank lever 225 is secured to one end of shaft 42 which is pivotally mounted in the upper part of motor housing I2 and which has secured to its other end a dog 420.. the lower portion of which extends inwardly and under the arm 4Ia, of the bell crank lever Albi. It may thus be seen that movement of operating lever 4| to the right (Figure l) will cause arm 41a, to engage the inward extension of dog 42a and thus through shaft 42 the lever 225 (Figure 2) will move in unison with lever 4| b. However, since the bell crank lever Il Ib is free to pivot about shaft 42, the lever 225 can be operated independently when it is desiredto only rotate the the hat without the pouncing pad moving into engagement as, for example, for the purpose of brushing off the dust after pouncing. Secured between the ends of rod 224 (Figure 2) is a collar 22.1 to which is pivoted a switch arm 228 for operating a mercoid switch 229 or the like. Mer- :oid switch 229 is preferably hooked up in series with main switch 23|) which supplies electricity by way of conductor 23| to motor 81. Thus although the circuit is made through main switch 230, it may be broken by moving switch arm 228 of mercoid switch 229 and this fora purpose pointed out hereinafter.

As pointed out hereinabove. it is desirable toV cause feeding of the pouncing paper only once during one cycle of operation. Accordingly, projection 64a (Figure l) which extends from and consequently rotates with tool assembly mounting stud 54, is preferably so positioned that it contacts bell crank lever arm 298a (Figure 2) shortly after pouncing pad |42 has completed its operations on the apex of the hat body during the return movement of the pouncing tool. When projection 54a abuts bell crank lever arm 29M bell crank lever 258 (Figure 2) is swung so that its arm 2981) abuts screw 299 in dog 296 and accordingly further movement of bell crank lever 298 causes rotation of shaft 294. Rotation of shaft 294 is translated into horizontal linear movement of rod 2I through the medium of lever 295, and linear movement of shaft 2|@ is, in turn, converted into vertical linear movement of operating rod 2|2 by meanswo-f bell crank lever 21|. operating rod 2|2 moves upwardly, clutch operating lever 2|4 also swings upwardly Yto cause clutch pin 2| E to move to the left as viewed in Figure 2, thus causing movement to the left of shaft 2|8 and forked part 220. This movement of part 220 causes outward movement of grooved clutch operating part 220 which, in turn, causes disengagement of the clutch and consequently a cessation of rotation of spindle i3 which bears the hat block I5.

Upward movement of operating rod 2|2 also causes upward movement of rod 224, this in turn causing switch arm 228 to swing upwardly and break the circuit in mercoid switch 22,9 and so shut off pouncing pad motor 81. As these several movements occur quite rapidly, motor 51 has sufcient time in which to stop its rotation before cam part |19 (Figure l) engages roller 293 which would position the various parts of the pouncing paper feed mechanism for feeding of paper.

When the machine is put into operation again to pounce a new hat body lever 4I (Figure 1) is swung, thus directing fluid into the hydraulic kpiston 35 to cause left to right motion of rack 52 as viewed in Figure 1 to start the pouncing tool assembly in its forward feed motion. Through the agency of metering valve 39 and cam |14, the first part of the forward motion of the pouncing tool during which it is not in contact with the hat body is quite rapid, and accordingly cam part |19 is in contact with roller 293 for a very short space of time. However, the reciprocation of pouncing pad frame H5 and the feed mechanism parts mounted thereon is so rapid that, even in the short period of contact between cam |19 and roller 293, ratchet wheel |98 (Figure 5) has been forced against pawl |91 a suiiicient number of times to cause a sufcient amount of sandpaper to be fed over pouncing pad |42. Immediately after cam part |19 (Figure l) has left roller 293,

i sliding arm I9! (Figure 5) falls removing pawl |91 from the range of the stroke of ratchet |98; hence no subsequent feeding ofthe sandpaper is effected.

In operation `the operator of the machine, after securing hat block I5 (Figure 1) in place on chuck i4 and after securing hat body I6 in place on the hat block, manipulates hand wheels |55 and |51 to adjust springs |52 and |53 (Figure 2) so that pouncing pad |42 will bear against hat body i6 with the desired pressure. The operator also adjusts screw 5| of the metering valve to set the forward and return feed rates of the pouncing tool. Also sandpaper feed roller 203 is set in the desired hole 26e, particular hole being chosen in accordance with the amount of sandpaper to be fed per operation of the pouncing tool. The operator also adjusts abutment |69 to time the reversing of the pounching tool in accordance with the depth of hat body |G.

After'the above-noted adjustments have been made the operator swings lever 4I, as viewed in Figure l, thus depressing valveplunger rod 4D to direct the iiow of oil under pressure into the lefthand end (as viewed in Figure l) of hydraulic cylinder 35. The piston rod accordingly moves to the right and rack 92, being attached to the piston rod, pivots pouncing tool assembly 21 in a clockwise movement, as viewed in Figure 1. During the first part of this pivotal movement which, up to the apex of the hat body, is relatively rapid, roller |41 on arm |46 follows the downward slope of cam |49 permitting the pouncing'tool assembly to swingV toward the hat body. When the pouncingr tool reaches the apex of hat body i5 it goes into contact therewith andas the pouncing pad E42 is reciprocating it begins to remove material` from the surface of the hat body.. Roller |41 continues down cam |49 as the pouncing tool moves about the hat body and material continues to be removed as pouncing pad |42 reaches the brim portion of the hat body. At this brim portion a short pause or dwell of the pouncing tool is effected through the operation of metering valve 39 as pointed out hereinabove. Also when the end of the forward feed stroke of the pouncing tool is completed, abutment |68, which moves with piston rod 69, has pivoted bell crank |59 to force reversing arm |79 upwardly thus disengaging the detent (not shown) on lever |51 to permit the plunger in valve 3| to rise. The rise of this plunger effects a reverse flow of oil, the oil flowing to the right hand side of cylinder 35 as viewed in Figure 1.

Upon reverse flow of oil, piston rod 5E moves to the left-hand side as viewed in Figure 1 thus pivoting it in counterclockwise direction at varying feed rates which are determined by metering valve 39 as pointed out above. When the pouncing tool has returned to the apex of the hat body, roller I4? has reached a point on cam |49 where adjusting screw 39| in arm |66 abuts against an extension 399 on supporting member 238. Further upward movement of roller |41 on cam |49 will thus cause the pouncing tool to swing away from the hat body. Also at this time, roller |15 on bell crank lever |59 has reached a portion of cam H where further movement of cam |14, which moves with piston rod 6G, causes a substantial opening of metering valve Sil to effect the rapid return of pouncing tool assembly 21 to its original position spaced from the hat body.

During the return movement of pouncing tool 2 from the apeX of the hat body, projections tta on the bottom of supporting stud 64 engages projecticns 298m (Figure 2) of bell crank 298 to the left as viewed in Figure 2. Continued pivoting of bell crank 298 causes projections 208i) thereof to contact dog 296 and pivot the dog to raise arm 2 l 2 upwardly through linkage provided by rod 2|!) and bell crank lever 2| I. Upward movement of arm or rod 2| 2 causes disengagement of clutch 22|) through linkage comprising bell crank 2M, rod 2|6, pins 2H, rod 2|8 and fork 22|. Also up- Ward movement of rod 2 2 causes rod 224 to break the circuit in mercoid switch 229, the breaking of this circuit shutting off pouncing tool motor 8?. Hence (referring again to Figure l) when cam piece |19 reaches roller 203, reciprocation of the pouncing pad has so substantially subsided that contact between cam piece |19 and roller 293 effects little, if any, feeding action of pouncing paper as pointed out above, the feeding of the pouncing paper being effected during the clockwise pivoting, as viewed in Figure 1, of the pouncing tool assembly.

It may now be seen that I have provided a pouncing machine which is well able to finish a hat body of substantially any size, depth and quality. By providing a varying feed rate of the pouncing tool and by providing adjustments for the effective pressure of the pouncing tool against the hat body, I am able to impart a uniform finish to a number of hat bodies in a thoroughly efcient and practical manner. Accordingly my finishing machine is well able to fulfill the abovenoted objects in addition to many others in a thoroughly efficient and practical manner.

As many possible embodiments may be made of the above invention and as many changes might be made in the embodiment above set forth, it is to be understood that all matter hereinbefore set forth, or shown in the accompanying drawings, is to be interpreted as illustrative and not in a limiting sense.

I claim:

l. In a machine of the character described, in combination, a base, a hat support rotatably mounted on said base, a tool support resiliently mounted on said base and pivotable about said hat support, and a tool reciprocably mounted on said tool support.

2. In a machine of the character described, in combination, a base, a hat support rotatably mounted on said base, a bracket pivotally mounted on said base, a resilient member secured to said bracket, a tool support secured to said resilient member, means for pivoting said bracket whereby said tool support pivots about said hat support, a pouncing tool reciprocably mounted on said tool support, and means for reciprocating said pouncing tool.

3. In a machine of the character described, in combination, a base, a hat support rotatably mounted on said base, a bracket pivotally mounted on said base, a resilient member secured to said bracket, a tool support secured to said resilient member, means for pivoting said bracket whereby said tool support pivots about said hat support, a pouncing tool reciprocably mounted on said tool support, and means for reciprocating said pouncing tool, said means including a plurality of balance rods for dampening vibration resulting from reciprocation of said tool.

4. In a machine of the character described, in combination, a base, a hat support mounted on said base, a pouncing tool reciprocably mounted on said tool support, said tool having an abrasive surface, means for intermittently automatically renewing said abrasive surface, and means inactive during operative engagement between said tool and said hat support for controlling said lastmentioned means.

5. In a machine of the character described, in combination, a base, a hat support mounted on said base, a tool support mounted on said base, means for effecting relative movement between said tool support and said hat support, a po-uncing tool reciprocably mounted on said tool support, said tool support being stationary with respect to the reciprocation of said tool, said tool having an abrasive surface, and means for automatically renewing said abrasive surface, said last mentioned means including parts which are set for operation by said relative movement.

6. In a machine of the character described, in combination, a base, a hat support rotatably mounted on said base, a tool support pivotally mounted on said base, means for pivoting said tool support about said hat support, said tool support being swingable toward and away from said hat support, resilient means biasing said tool support toward said hat support, a spring member associated with said tool support for acting against said resilient means, and a pouncing tool reciprocably mounted on said tool support.

'7. A pouncing machine having a tool support, a tool mounted on said tool support, means for feeding abrasive material over a surface of said tool, means intermittently operative for actuating said feeding means, and means inactive during pouncing activity of said tool for controlling said intermittently operative means.

8. In a machine of the character described, in combination, a rotatable hat support, a tool support operatively associated with said hat support, a reciprocable pouncing tool mounted on said tool support, means for reciprocating said pouncing tool, means for feeding abrasive material over a surface of said tool, means intermittently operative for actuating said feeding means, and means inactive during pouncing activity of said tool for controlling said intermittently operative means.

9. In a machine of the character described, in combination, a base, a hat support operatively associated with said base,.a tool support operatively associated with said base, means for effecting relative movement between said supports, a tool mounted for reciprocation on said tool support, means for reciprocating said tool substantially rectilinearly, and means for Idampening vibration resulting from reciprocation of said tool.

10. In a machine of the character described, in combination, a base, a hat support operatively mounted on said base, a bracket pivotally supported by said base, a pair of spring members secured to said bracket, a second bracket secured to said spring members, a tool support secured to said second bracket, and a tool opera/ tively mounted on said tool support. y

11. In a machine of the character described, in combination, a base, a hat support rotatably mounted on said base, a tool support pivotally mounted on said base, means for pivoting said tool support about said hat support, said tool support being swingable toward and away from said hat support, resilient means biasing said tool support toward said hat support, a flat spring member associated with said tool support to variably resist the bias of said resilient means, means operate on the surface of a hat mounted on said i support, means for effecting a continuous pressure of the tool against the hat, means for varying the amount of said pressure at will, means for automatically and variably relieving the pressure of said last-mentioned means as said tool traverses predetermined portions of the hat, and means for varying at Will the effective relieving action of said relieving means.

13. In a machine of the character described, in combination, a rotatable hat support, means for rotating said hat support, a reciprocable tool operatively associated with said hat support, means for reciprocating said tool, means for traversing said tool about said hat, means for feeding abrasive material over a surface of said tool, means for rendering ineiective said hat support rotating means and said tool operating means substantially at the end of the traversing movement of saidtool, and means operable sub.- sequent to operation of said last-mentioned means to actuate said abrasive feeding means.

14. A pouncing machine having a tool support, a tool mounted on said support, means for reciprocating said tool,V a supply of abrasive material for said tool associated with said support, means for feeding said abrasive material over said tool, said supply of abrasive material being stationary With respect to the reciprocation of said tool, and means for dampening vibration resulting from reciprocation of said tool.

PAUL SCHULTZE.