US2361401A - Scoring machine - Google Patents

Description

Oct. 31, 1944. J HOTHERSALL 2,361,401

SCORING MACHINE Filed June 11, 1941 6 Sheets-Sheet J.

I I INVENTOR ATTORNEYS 1944- J. M. HOTHERSALL 01 SCORING MACHINE Filed June 11, 1941 6 Sheets-Sheet 4 II I nu; T lllli 'iillllllllllllllhlll'llllfllulllllllllllllllll n mum &&

- ATTORNEYS Oct; 33, 1944. M HQTHERSALL 2,361,401

SCORING MACHINE Filed June 11, 1941 6 Sheets-Sheet 6 ATTORNEY-5 Patented Oct. 31, 1944 UNITED STATES. PATENT aO-FFI'CE SCORJI Z hZZLHINE I American Can Compan poration of New "Jersey y, New York, N .'Y., a cor- Application June 11, 1941,.-Serial:No. 397.626

8 Claims. (Cl. 113-15) The present invention relates to scoringmachines for impressing weakening lines in metallic surfaces and has particular reference to'such a -machine which terminates the score lines byioining the ends within the'boundaries of 'th sur-'"' face.

In the manufacture of the well known tearing I strip container or can which is adaptedto be .opened by the removal of aportion of thebody wall'bounded'by weakened'or-score'lines,'it is--= sometimes desirable to leave thecan cover; which results from the removal :of the tearing strip, attached to the can 'bodyby'a hinge portion of the body wall. This isefiected sometimes by forming in the "body wall'a tearing strip that extends only partially around the can body, the

.score lines terminating and joining-each other "within the confines of the body and-adjacent -"the 'side seamthereof so that-a portion ofthe .body wall adjacent the .end of the tearingstrip "remains intact and servesas aahinge .when'the tearing. stripis removed.

The present=invention: contemplates the'provision of a scoring machine for scoring-canbody blanks from which such hinge cover :cans:'are

--made. 7

:An :object thereforeof the invention is'athe provision of a machine for *scoringon impressing weakening .:-lines in' metallic .surfaceswhereinfthe weakening lines donot extend-through theedge but are confined within the surface beingscored.

:Another objectis the-provision of. such ascoringvmachine wherein the impressing of the:score lines is effected by rotating rollers which operate 'to set off a tearing strip in a can zbodyblank :ing'machine wherein the blanks to be scoredzmay be'fed rapidly-into scoring association with the scoring rollers and insynchronism with the rota- .tion of the scoring rollers so that the tearing strip :will be set ofirin a predetermined; position inLthebIank. i I

:Numerous other objects and advantages 'ofzthe i invention'willibe apparent as itis better understood from the following description, which,

staken :in connection :with the accompanying :Fig. 8 is an edge view of "one "rollers;

drawings, discloses a preiferred embodiment thereof.

i-Referring to the drawings: :Figures 1 and 2when-taken togetherillustrate zatopxplanview of a scoring machineembo'dying the instant invention;

Fig. 3 is 1 a .longitudinal :part section and :part elevation taken-substantially along the broken line 3-..3 in Fig. 1;

Fig. .4. iS'-a rear view of the machine shown; in

Fig. -l,:with-tpartsbrokenaway and shownin section;

.Fig. '5 is a transverse part :section -.an'd:p'art elevation taken substantiallylalongthe line 5-v5 inzFigsq-l and'2;

Fig. .6' is ancen'larged' sectional view..taken': substantially along the'line 6;6. in Fig. 1, with parts broken away; v

Fig. '7 'is .a horizontal section taken:substantiallyalong the line rl7 in Fig. '6;

..of the ":scoring Fig. 9 is aiside view. of ithearollershownfin -Fig.z8,-with:parts'broken away and partsshown in section;

' iFig. 11.0 is a. fragmentary :side-view of 1 another,

scoring .rol1er,'-'with a-portion broken :away and shown in section;

Fig. 11 is a part elevation and part sectional view of one of theanvil: rollers. and its-mounting shown in the lower right of Fig-:6; and

51%. -12 is a .plan view of ':a .can 'bodyLblank having a-tearing-stripset .offaby score: linesiimpressed in the surface of; the. blankibythe' present machine.

.As a preferred embodiment of the instantiin- .ventionthe drawings illustrate asscoring machine in which a sheet metal rectangular :canrbody blank A (Fig. '12) is.;impressed 'withagzpair of spaced and parallel score lines 3' located in'a ,predetermined portion in. the blank. rSuchaa .rcan

body-blank preferabl-yis for usein forming round or other shapedncan :bodies .used in 'cans'xof the character disclosed in United States Patent -1,"737,020,-issued November 26, -1929, [to-J; F.

Peters, ,on Tear open tobacco can.

Thescore linesBextendfrom one s-ideasea-m edge oftheblank toward: the other .andterminate short ofthisiatter edge, .-Th scorelines adjacentrone' end of the blankarejoinedby way of short angularly :disposed :connecting'ascore :lines C which together with the score lines -B-set oif :arremovable tearing. strip D- which--is.;adapted-to and. rear retaining bars; l2,

-be'torn away toopen a cana-having a body :made

.from such ablank. v

The plain blanks A to be scored-aret'fedfirom a-stack of such blanks retained in a magaizine .ll .(Figs. 2;ancl. 5) which includes :vertical front 4:3 {which-hold --the stack of blanks in ;place. The front-retaining frame of the machine.

machine frame I l.

bars l2 are Secured to the outer ends of a pair of horizontal spaced and parallel guide rails I5 which are attached to the top of a bed plate [6 .Supportrails IS. The vacuum cup'is fixed to the upper end of a stem 23 which slides up and down in the slideway of .a'bracket 24 secured to the The lower end of the stem is connected to a flexible hose 25 which leads from any suitable source of vacuum and this hose communicates with a passageway in the stem which leads to the vacuum cup.

The vacuum cup 22 is shifted vertically by a segment gear 28 which meshes with a rack 23 formed in the cup stem 23. The gear is mounted on a rocker shaft 32 which is carried in bearings 33 formed'in the main frame H. The rocker shaft is actuated by an arm 34 which is carried on the shaft. The outer end of the arm carries a cam roller 35 which operates in a cam groove 33 of a cam 31 formed on alever 38.

The lever 38 is mounted on a pivot pin 39 carried in a boss formed on the cup stem slideway bracket 24. Thelever'is connected by a link 4| -to an arm 42 mounted on a cross shaft 43 carried in suitable bearings in the main frame H. The shafticarries a rocker lever 44 which is connected .to a crank rod 45. The crank rod surrounds acrank pin 46 secured in an eccentric position in a'paircf spaced crank discs 41 of a crank shaft The crank shaft is jour-' 48 (see also Fig. 3). naled in a plurality of bearings 49 in the main frame I1. I The crankshaft 48 is continuously rotated by' an endless chain 52 which operates over a sprocket 53 mounted on the crank shaft and over a'sprocket 54 which isc'arried on an auxiliary 'drive'shaft 55 journaled in bearings 56 in the main frame IT. The auxiliary drive shaft carries V v a' bevel gear 58 which meshes with a bevel pinion 59 mounted on a shaftfil (Fig. 5) journaled in bearings 62 in the main frame.

' 1 This shaft is rotated by anendless chain 63 which operates over a'driven sprocket 64 mounted on the shaft and over a driving sprocket 65 which is mounted on a rotor shaft 66 of an-elec- "trie'motor 61. This electric motor is the main source of power for operating the entire machine.

When a blank A is pulled down by thevacuum cup 22 from the magazine H it is immediately engaged along its rear edge by feed dogs H (Figs. 1 and which are carried in a pair of spaced below the magazine. these'feed dogs equally spaced along the length of the feed bars." These feed bars slide in suitable grooves formed in the machine bed plate IS. The feed.bars are'secured to a tie-bracket 13 which is connected by a link 14 to the upper end of the rocker lever 44.

Hence as the rocker lever 44 operates to actuate the vacuum cup 22, it also reciprocates the feed bars 12 through a forward or feeding stroke and thence through a backward or return stroke.

The entire stack of blanks rests on a pair' for the scoring operations.

and parallel reciprocating feed bars 12 located,

There are a plurality of upright feed dog I02 secured thereto.

This reciprocation of the feed bars first removes thepulled down blank A from the magazine and then advances it along a straight line path of travel through several idle stations in the machine, in an intermittent or step-by-step movement. The guide rails 15 hereinbefore mentioned, guide the blanks through the idle stations While a pair of hold-down bars 15 frictionally engage against the top surfaces of the blanks and prevent them from being shifted back with the feed dogs on the return stroke of the feed bars.

At the inner end of the path of travel of the advancing blanks A, the innermost blank in the procession is pushed forward by a long finger 18 on the feed bars 12 and is received against a stationary gauge block-l9 (Fig. 5) which is mounted on the bed plate Hi. In this position, the blank is disposed directly above a substantially horizontal lifter arm 8| which immediately operates to lift the gauged blank above the path of travel of the succeeding blanks in the procession.

The lifter arm 8| constitutes one leg of a bell crank 82 mounted on a pivot shaft 83 carried in suitable bearings formed in a housing bracket 84 secured to an adjacent part of the machine frame. The vertical leg of the bell crank carries a cam roller 86 which operates in a cam groove 81 of a barrel'cam 88 mounted on a shaft 89 journaled in bearings 91 in the housing bracket 84. This cam shaft is rotated in time with the reciprocation of the feed bars 12, by an endless chain 93 which operates over a driven sprocket 94 on the cam shaft and over a driving sprocket 95 on the shaft Bl which is driven by the electric motor 61.

The lifter arm 8| lifts a blank A into engagement with a row of permanent magnets 98 which are secured in an overhanging shelf 93 of the gauge block 19. The raised blank clings to the magnets at this higher level where it is in endwise alignment with a cross feeding device disposed at right angles to the entrance feeding device just explained;

The cross feeding device advances the blanks lengthwise along a straight line path of travel Because of the greater length of some can body blanks as compared with their width, the lift transfer of the blanks from one level to another results in a more rapid and more efficient passage of the blanks through the machine. I

The cross feeding device includes a reciprocatingfeed bar [0| (Figs. 3 and 5) having a single The feed bar slides in a slideway )3 formed in a block I04 bolted to the'bed plate l6. A flat plate I05 secured to the top of the block confines the feed bar in its slideway.

' The feed bar If is reciprocated through a shortforward feeding stroke and thence through a return stroke by a segment gear I08 which meshes with a rack H19 formed in the bottom of the feed bar. The segment gear is part'of' a rocker'arm HI formed on a lever H2 mounted on a pivot shaft I I3 carried in a boss H4 on the bed plate Hi. The lever carries a cam roller which operates in'a-cam groove l I! of a barrel cam I 19 mounted on and rotated by the shaft.

Hence as the shaft 48 rotates, it revolves the cam H9 and this rocks the lever H2 and arm IN to reciprocate the feed bar l0l.

ward stroke of the feed bar the feed dog W2 en- 'gages against'the'outer end of the blank which is retained inan elevated position beneath and On the forwise -along the magnets and along the :gauge block' 'I9. This advancement of 'the blank covers only ashort distance which is sufficient to bring the forward end of the blank into a first opera tion scoring station S and into the grip of apair ofrotating rollers which includes an upper "first operation scoring roller I2I and a lower anvil roller I22 (Figs. 3 and 6).

The scoring roller I2! andthe anvil roller I22 -a-re formed with trunnions I23, I24 which are journaled in respectivebearing'blocks I25, I26.

The bearing blocks are adjustably disposed in a manner to be hereinafter explained, adjacent a housing I21 which is bolted to the machine frame IT. "The inner trunnion ofeach-roller is formed "with a tongue I3I which engages in a notch I32 in-the inner end of respective drive shafts I33,

I34. These drive shafts extend through'sleeves I35 which are secured in bores I36 in the housingIZ'I and the outer ends of the shafts are journaled in bearings I3! formed in the housings.

v The scoring roller I2I and the anvil roller I22 are rotated in unison by respectivemeshing gears I38, I39 which are mounted on the outer-ends of the drive shafts I33, I34. These gears are rotated in time with the other moving-parts of the machine by an intermediate gear I4I (Figsl, 4 'and5) which meshes with the anvil roller gear I39 and which is carried on a shortshaft secured in a 'boss I42 formed in the bracket 84. The

bracket '84 is bolted to the housing I21.

7 The intermediate gear I4I meshes with and is driven by a main driving gear I44 which is mounted on the continuously rotating shaft 89 inthe bracket 84. electric motor 61 and hence the gear train just explained and the scoring roller I2! and the anvil roller'l22 are likewise rotated in time with the other moving parts of the machine. In this manner the scoring roller I2I is rotated in synchronism with the passage of a, blank A through the machine and principally with the entrance of the blank into the grip of the rollers I2I, I22.

When theforward end of the blank A is gripped between the scoring roller I2I and the anvil roller I22 it is drawn in by the rollers and advanced endwise through the machine. During this passage between the rollers the blank is scored or impressed with the score lines B, C. For this purpose the scoringroller I2! is made with a circumference equal to the length of the blank A plus the space between two adjacent blanks.

I48 located in a recess I49 in the scoring-roller,

The insert block I48 is held in place by a tapered key IEI which is disposed in the recess I49 adjacent the block and which is secured by a screw I52 against displacement. The key is sunk below the surface of the roller to provide a clearance space I53 between the terminal ends ofthe cutting edges. These raised cutting edges 1I46,.I li cooperate with a flat outer face I56.

(Fig.:6) of the anvil roller I22 in impressing the v score linesin the blank.

When a blank A first enters between the-scoringr roller I2 I 1 and theanvil roller 122,; the..clear Shaft 89 is 'driven'from the .ter.

ance space't53 in 'the .scoring roller is iniaiposition adjacent the anvil roller so thatz.the forward edge of the blankwill enter'into the. clearance space. The scoring roller rotates in 1a counter-clockwise direction as viewed in Fig. 39 and thus scoring of the blank will'not begin until the cutting edges I41 of the insert I48 come into engagement with the blank. However, the blank is in the grip of the rollers and begins to advance through: the rollers as theyrotate; This is brought about by a rubber" feed ring I51, (Fig. 8) which is carried on the scoring. rolleraand which presses the blank down against the-anvil roller and thus advances it between the rollers.

The engagement between the insert cutting edges I47 and the blank takes place a. predetermined distance inwardly of the front edge of the blank, as shown in Fig. 12, and this distance is determined by the relative timing between the cross feed bar- II)! and the scoring roller. When the insert cutting edges come into this-engagement with the blank the scoring operation-begins at the junction lines C and continues by way of the cutting edges I46 to the rear end of the blank as the rollers revolve and thus feed the blank forward. This constitutes a first-scoring operation in which the heavy scoring ofthe blank is effected to a predetermined approximate depth of score cut.

Following this first scoring operation, the blank is further advanced by a pair of feed rollers IBI, I62 (Figs. 1 and 6) between whichthe blank passes. These rollers are mounted on respective shafts I63, H54 journaled in bearings formed in a bracket I65 which is bolted to a side of the scoring roller h'ousing I21. The upper feed roller IIiI rotates by frictional engagement with the lower roller I62 when the blank is not interposed therebetween. The lower roller is positively driven in time with the other moving parts of the machine by a spur gear .I'S'I (Figs. 1 and 4) which is mounted on the outer .end of the shaft I64. This gear meshes with'l-and is driven through an idler gear I 68 which. also meshes with the scoring roller gear I139. "The idler gear is mounted on a short shaft carriedin the bracket I65.

'Theifeed rollers I68. I62 advancetheblanks along a longitudinal table III which'is secured to a table bracket I72 bolted to aside .of the scoring roller housing I27. Duringtheir passage along the tablethe blanks are held 'in line by an inner side guide I73 and an outer. side guide I'M between.whichtheblanks pass. Theguides aresecured to the table I'II.

The feed rollers ISI, .152 transfer the-blank A from the first operation scoring station S intosa second operation scoring station T. At theklatstation, the score is made deeper and-wider to precise dimensions. This second scoringaoperation is effected by an auxiliaryscoringroller I T! (Fig. 3) andan auxiliary anvil roller I18 which are supported in respective bearing-blocks I8 I I82 disposed: adjacent a housing I83 bolted to the machine frame Il. The bearinggblocks; are identical with the bearing blocks. I25, I26zwhich are located at the first operation scoring station S.

The auxiliary scoring roller I'll'is rotated: in the same manner as the scoring. roller- I.2I,.-in this case by a; gear I85 .(Fig. 4) whichis mounted on the outer end of a rollershatt whichmay vbejournaled in thehousing I 83. Thei auxiliary anvil .roller 51573 is. similarly rotatedabyi azgear. I 86 which meshes with the gear I85; and which is mounted on the outer end of a shaft journaled in the housing I83. The auxiliary anvil gear I86 meshes with an idler gear I81 mounted on a short shaft carried in the feed roller bracket I65. The idler gear I81 meshes with and is driven by the feed roller gear I61.

Hence through this gear train the auxiliary scoring roller I11 and the auxiliary anvil roller v I18 are rotated in unison and also in time with the first operation scoring roller I2I and the feed rollers I6I, I62. This brings the blank into the grip of the second operationscoring roller I11 in the same relative position to the roller as it occupied when it first entered the grip of the first operation scoring roller I2I.

For best results it has been found practical to eliminate the re-scoring or second operation scoring of the connecting score lines C in the blank. For this purpose the second operation or auxiliary scoring roller I11 is formed with a clearance recess I9I (see Fig. 10) in its periphery in the place which corresponds to the insert scoring operation takes place until the straight score lines B move adjacent the rollers. These lines B are re-scored as the blanks advance between the rollers by a pair of spaced and parallel scoring or cutting edges I92 (Fig. 10) which are formed on the auxiliary scoring roller I11. These cutting edges extend around the scoring roller and terminate adjacent the clearance recess I9I.

Following the second scoring operation the scored blank A is further advanced along the table I1I by a pair of cooperating auxiliary feed rollers I95, I96 (Figs. 1 and 3). These rollers are or may be identical with the feed rollers I8 I, I62 and are mounted on shafts I91, I98 journaled in a bracket I99 bolted to the auxiliary scoring rollerhousing I83. Adjacent these rollers, the table IN is supported on a bracket 298 which is bolted to a side of the housing I831 The lower roller I96 is the driving roller and this is rotated by a gear 2IlI (Fig. 4) which is carried on the outer end of the roller shaft I98. Gear 28I meshes with and is driven through an idler gear 202 which meshes with the auxiliary anvil roller gear I86. The auxiliary feed rollers I95, I96 advance the scored blank A-into position between a pair of flattening rollers 285, 296 (Fig. 3) which press down any portions of the blank adjacent the score lines which have been raised during the scoring operations. These flattening rollers are mounted on respective shafts 201, 288 which are journaled in bearing blocks 289, 2III adjustably disposed in a bracket 2II bolted to the machine frame I1. The outer ends of the shafts 201, 208 carry meshing drive gears 2I5, 2I6 (Fig. 4). The lower gear 2I6 meshes with and is driven by a gear 2I1 (Fig. 1) which is mounted on a short shaft 2I8 journaled in a bearing 2I9 formed in the feed roller bracket I99. The outer end of the shaft carries a gear 22I which meshes with and is driven by the feed roller gear 20 I.

As a scored blank A leaves the flattening rollers 265, 206 it engages against a deflector bar 225 which is bolted to a magazine rack 226 secured to the'machine frame I1. The deflector bar guides the blank into the magazine where it falls into position on the top of a stack of such blanks previously discharged from the rollers. This completes the travel of a blank through the machine. The blanks are removed by hand from this magazine as needed for subsequent operations.

A more detailed explanation of the scoring roller and anvil roller mountings will now be given. These mountings are the same for both 233 located in the bottom of the slideway. The

bearing block and the wedge are retained in place within the slideway by a flat plate 234 which is secured to the outside of the housing I21.

The bearing block and the Wedge are held tightly together and against the bottom of the slideway by a compression spring 235 which surrounds the shank of a stud 236 which extends up through the bottom of the slideway and through the wedge and is threaded intothe bearing block. The spring is interposed between the housing I21 and an enlarged head on the stud.

Adjustment of the anvil bearing block I26 and the anvil roller I22 carried therein is efiected by shifting the wedge 233 horizontally along the bottom of the slideway. This is brought about by a screw sleeve 238' (Fig. 11) which is threaded into the housing I21 adjacent the slideway 23I. The inner end of the sleeve abuts against the large end of the wedge 233. The outer end of the sleeve is formed with actuating gear teeth 239 which mesh with a micrometer gear 24l disposed in a casing 242 bolted to the housing I21. The casing also encloses the screw sleeve 238 and its gear 239.

At its ends, the micrometer gear or screw 24I is formed with trunnions243. The inner trunnion is carried in the casing 242 while the outer trunnion is supported in a removable plate 244 which is secured to the casing. The outer trunnion also carries'a graduated collar 245 and a nut 246 to which a wrench may be applied for turning the micrometer gear.

Hence when the micrometer gear 24I is turned, it rotates the screw sleeve 238 by way of its gear teeth 239 and thus shifts the wedge 233 horizontally. Such a movement of the wedge shifts the anvil bearing block vertically into the desired position. After such an adjustment the wedge is locked in place against the inner end of the screw sleeve by a long locking stud 241. This stud extends through the plate 244, the casing 242, the screw sleeve 238 and is threaded into the large end of the wedge. Locking of the Wedge is efiected by tightening of the stud and conversely when an adjustment is to be made the stud must first be loosened. The stud is also utilized to draw the wedge outwardly when it is desired to lower the anvil bearing block I26.

The mounting for the scoring roller bearing block I25 will now be considered. This block is mounted so that it may be accurately adjusted in three directions so that the scoring rollers I2I, I11 may be properly aligned relative to each other and tothe blank being scored. For this purpose the top of the-bearingblockl25 is formed with a fiat surface 25* (Figs. 3 and 6) which seats against afiatbottom surface 256 of a swivel plate 251. The. top of this swivel plate is formed with a.convex-.surface 258which extends transversely of the plate and which seats against a concave surface 259- of aseatplate 26L The top ofthe seatplate is fiat and seats against. an overhanginghead section 262 of thehousing'I 21.

The bearingblock I25, the swivel plate 251 and the seat plate 26L are held together and are clamped against the head section 262 .of the housing:I21 by a pair of long bolts 265(Fig. 3') which extend .down through these parts and. have their lower ends threaded into the bearing block. After an adjustment of the bearing block the bolts are screwed up tight to clampand lock the parts in. their adjusted position. The bearing block and its associated swivel plate and seat plate are retained against endwise displacement by side clamps 269 which are bolted to the swivel .plate and to the housing,

The' first of the adjustments possible with such a construction of bearing mounting is for rotating'the bearing block-I25 horizontally s0 that'the first and the second operation scoring rollers I2I, I1I.- may be brought-into parallelism; To-bring this: about the'bearingblock is rotatable about a pivot button" 261 (Fig. 6) which is disposed within-.abushing 268 transversely divided at the junctureofsurfaces 255,256. Thelower bushing section is seated in a recess 259 formediin bearing block I25the upper section in a hole.

21!- in-the-swivel plate 251. The button is located horizontally at the engaging surfaces 255. 1'

2550f the bearing block" and the swivel plate and islocat'ed vertically in alignment with the cutting edges I48 of the scoring roller.

The button 261 is formedon the lower end of airod 213 which extends up through'the hole 21! in the swivel plate and up'through aligning clearance holes 214; 215, respectively formed in the seat plate ZBI and the housing head section 262; The upper end'of the'rod is formed with ahead 215 which rests on top of the housing head thumb screw and also provides for lifting the button up out of its pivotal position so thebearing block may be removed when desired.

Turning of the bearing block I25 on its pivot bu t n-261 is brought about by adjustment of a pair'of long screws 283 (Figs. 6 and '7)' which are threaded into the bearing block. Theinner ends of the screws engage against depending pins 284 which are secured'in the bottom of the swivel plate 251 and which extend down into clearance openings 285 formed in the bearing block.

Thus by loosening one of thescrews 283 and tightening up on the other a force is exerted against the proper pin 284 to rotate the bearing block .relative to the stationary swivel plate 251.

After such an adjustment the screws 283 are 1 locked in adjusted position by locknuts 286 which are carried on the screws.

It is sometimes desirable to out one score line B in the blank to a greater or lessser depth than the other and this brings into play the second the .seat plate has a clamp block 288'secured to it by bolts 289.

The clamp block 288 carries a seat plate micrometer adjusting sleeve 29I which is threaded intotheblock. The innerend of the sleeve rests against a swivel washer 292. Abolt 2,83which 'extends. through the sleeve and. through the washerv and is threaded into. the housinghead section.262, adjustably. secures the clamp block to the housingIZ'l. Thisbolt retains the entire unit of fbearing, bloclgswivel plate,and seat plate in place relative to the housing I21.

In a similar manner the clamp. block 288 is adjustably secured to the swivel plate 251. ..This is brought about by a swivel plate micrometer adjusting sleeve 295 which is. threaded intothe clamp block. The inner end of the sleeve rests againsta' swivel washer 296. A bolt 291'extends through the sleeve and through the washer and is threaded into the swivel plate and this bolt secures the platev to the clamp block.

Thus by loosening the bolt 291 and rotating the sleeve'295 by means of spanner wrenchholes provided in the sleeve, the swivel plate 251'may be shifted through an arc inwardly or outwardly in its concave seat in'the seat plate 26l andthis shifting of the swivel plate tilts the bearing block I25 and the'scoringroller I2I carried therein to the angle desired. After such an adjustment the swivelplate is locked'in its new position by, tightening the bolt-291. I f.

The third adjustment of'the scoring roller I2I has to do with shifting the roller inwardly or outwardly relative to the longitudinal edge of the blank being scored, to bring'the first and second operation scoring rollers into longitudinal alignment relativetotheedge of the blank. Such an adjustmentis efiectedby loosening the. bolt 293 in the adjusting sleeve 29! and rotating the sleeve in the proper direction.

This shifts the seat plate 26L and the swivel plate 251 and bearing block. I25 carried thereon as a unit outwardly or inwardly'as the casemay be and thus brings the scoring roller into the desired position. After such an adjustmentthe seat platev is locked in its newposition by. tightening'of the bolt 293.

Thus with-such a scoring roller mounting construction, the scoring roller may in fact be universally adjusted in almost anydesired direction with micrometer accuracy. The adjusting sleeves and screwsprovide this micrometer accuracyand the location-of the adjusting elementsfurther results in a mountingconstruction which permits of removing the scoring roller bearing blockand its return to its mountingwithout in any way interfering with the adjustment of theblock-or the scoring roller carried therein. It is thought that: the invention and many of its attendant advantages will b understood from the foregoing description, and itwill be apparent that various changes may be'madein the form, construction and arrangement of the parts without departing from the spirit'and cope of the -inventionor sacrificing-all of its ma erial advantages'the form hereinbefore described being merely a preferred embodiment thereof.

I claim: 2

1. In a scoring machine, the combination of devices for feeding a blank of sheet material ing around said roller and terminating adjacent a recess for producing parallel score lines part way across said blank to leave an unscoredportiozitherein, an'insert carried in said roller between the ends of said scoring edges, said insert having an auxiliary score edge forming a continuation of and a connection between the parallel score edges of said roller? at one end of the score lines, a second operation scoring roller and a second anvil roller between which the blank passes to receivev a re-score cut of a portion of the score lines in the blank, said second operati'on scoring roller having a pair of spaced and parallel scoring edges and a recess in its periphery, and means for rotating said second rollers in timewiththe advancement of the blank along its .path of travel to cut deeperthe score lines previously cut bythe first operation roller parallel scoring edges and to leave unaltered the score lines previously cut by the auxiliary score a scoring operation-thereupon, one of said rollers having a pair of spaced and parallel annular scoring edges extending therearound for cutting a pair of parallel score lines in the blank, means for rotating saidrollers, and devices for shifting one of said rollers for cuttingone of said score lines in the blank deeper than the other. a

3. In a scoring machine, the combination of an anvil roller, ascoring roller adjacent said anvil roller for performing a scoring operation upon a blank passed between said rollers, a housing adjacent said rollers, a bearing block in said housing for supporting said scoring roller, a. universal joint connection between said housin and said bearing block so that the block may be angularly and lineally adjusted to bring-the scoring the blank, and means for rotating the scoring roller ineach adjusted position. a

4. Ina scoring machine, the combination of an anvil roller, a scoring roller adjacent said anvil roller for performing a scoringoperation upon a blank as, it passes between said rollers, a housing adiacentysaid rollers, a bearing block in said housingjfor supporting said .scoring roller, a swivel plate having a convex surface mounted adjacent saidbearing block, a seat plate having a'concave surface to receivesaid swivel plate, block adjusting devices for rotatingthe block and the scoring roller, carried therein in a direction parallel 'withtheplaneoi the blank when between the rollers. swivel plateadjusting devices roller'for performing a scoring operation upon a blank when positioned between said rollers,a housing adjacent said rollers, a bearing block in said housing for supporting said scoring roller, a

, universal joint connection for said bearing block and parallel scoring edges formed upon and exrolle'r into a predetermined position relative to for rotating'the block in a direction at an angle to the plane of the'blank, seat plateadjusting devices for lineally shifting the block across the blank, clamping devicesfor securing the block in an adjusted position in said ho using,'and means for rotating the scoring roller in all adjusted positions of the block.

5. In ascoringmachine, the combination of an' anvil roller, a scoring roller adjacent said anvil tending partially around the periphery of each of said rollers, the scoring edges on one of said rollers being longer than those on the other, means for feeding blanks past said rollers and into engagement with said scoring edges, means for rotating said rollers in timed relation to said feeding means whereby each pair of scoring edges operates in succession upon each blank to produce a single pair of parallel score lines thereon, and means for angularly adjusting the axis of one of saidv rollers relative to the blank being scored to vary the depth of cut of each cutting edge of the roller, whereby the score lines produced by said rollers may be of different and varying predetermined strength.

'7. In a scoring machine, the combination of a pair of cooperating rollers, one of said rollers having a pair of spaced parallel scoring edges extending around its periphery and terminating adjacent a recess in: the roller for producing parallel score lines'partially across a blank passed between said rollers to leave an unscored portion in the blank, an insert disposed in said roller recess and having an auxiliary scoring edge forming a continuation and a closed end of said parallel scoring edges, said parallel scoring edges and said auxiliary scoring edge together producing a score out terminating within the confines of said blank to set oil a tearing strip shorter than the length of the blank, and means for rotating said rollers to produce said score out.

8. In a scoring machine, the combination of devices for feeding a blank of sheet material alOng a predetermined path of travel, a first operation scoring roller disposed adjacent the path of travel of the blank and engaging against the blank for producing spaced parallel score cuts of predetermined depth extending partially across said blank and a terminating score cut section on said roller for joining together said spaced parallel score cuts within the confines of the blank, means for rotating said roller, a second operation scoring roller also disposed adjacent the path of travel of the blank and engaging the blank for re-scoring and increasing the depth of said spaced and parallel score cuts to leave the said terminating scored section of shallower depth and stronger thanthe re-scored portion of the score lines, and means for rotating said second operation scoring roller in time with the feeding of the blank to bring the re-scoring out in the desired predetermined locality in the blank.

- JOHN M. HOTI-IERSALL.

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