US1764831A - Strip-feeding mechanism - Google Patents

Description

June 1.7, 1930.- Q N HE ET AL I 1,764,831

STRIP FEEDING uncr'mmsu Original Filed Jan. 12, 1927 4 Sheets-Shear. 1

QTTORNEY;

Julie 1930. c; N HE ET AL 1,764,831

sTiuP FEEDING MECHANISM Original Fil ed Jan. 12, 192'? 4 Sheets-Sheet 2 IgENTORJ BY Ma; M a M,

ATTORNEY.

June 17, 1930. c; FANCHER ET AL 1,764,831

. STRIP FEEDING MECHANISM Original Filed Jan. 12, 1927 4 Sheets-Sheet 5 F/G/O 3 V v /0/ /0 w 76 I 0 F jNVENTORrS. Q M% xdMl BY W M A TTORNE Y.

June 17, 1930. c, J, FANCHYER Er. AL 1,764,831

STRIP FEEDING MECHANISM Original Filed Jan. 12, 1927 4 Sheets-Sheet 4 ATTORNEY.

Our invention relates to improvements in Patented June 17,1930

UNITEDJSTATESI PAT NT OFFICE} CHARLES J. FANCI-IER, onwrnnsoa, VERMONT, Annnonnnr AJJonNs'oN, or Loud MEADOW, MASSACHUSETTS, ASSIGNORS, BY MESNE ASSIGNMENTS, 'ro woonwann, HUBBARD COMPANY, oF-HILL, NEW Hiuvrrsnmmn CORPORATION OFVNEW HAMP- SHIRE STRIP-FEEDING MECHANISM urigiala aiaaon filed January 12, 1927, sari-aim. 16Q,639. Divided and this application filed December i 21, 1927. Serial No. 241,574.

mechanism for feeding strips, and particularly for feeding strips of tempered steel While being cut into glaziers points the same being a divisional part of our appli cation for letters patent of the United States, filed January 12, 1927, Serial No. 160,639. r The primary objectof our invention is to produce mechanism; with which can be fed to cutting mechanism one or more "strips of tempered steel, or morefor less similar material, in a manner to insureprecision, adequacy, and reliability, Said feeding mechanism being comparativelysimple both Structurallyand functionally.

Another object ishto provide mechanism of this character with means for feeding the strips at their leading jen'ds'intermittently, eventhough said strips back of such ends be fed continuously. To' this end clamping elements are employedand applied to the strips, and intermittentlyrotating members are provided to assist in feeding the strips said rotary members engage the strips at points adjacent 'to their leading ends, and remain stationary while said strips atsaid ends are held stationary by the clamping elements. In order to feed to thebest advantage steel strips to cutting mechanism, feeding mecha nism is required which is especially adapt ed for handling such strips. The feeding of steel strips, as distinguished from the feeding of zinc' strips for example, involves the use of means especially adapted for'the purpose, and necessarily different from means capable of feeding strips of material of a character unlike steel, or having characteristics Which diifer fromthose of steel, as will bereadily understood. i

, Our feeding mechanism is designed to handle and feed simultaneously ten "steel strips, but this number as applied to. said mechanism may beincreased or decreased without changing any essenti'a lfeature'of the mechanism or departing from the invention, since even a singlestrip might be fed thereby Without making any ln'echanical' change, or mechanism might beconstructed to' handle a single strip only, or to handle more thanten strips; In this connection it may be noted that, when the feeding mechanism is employed in connection with the manufacture of glaziers points, the stri s are obtained from a roll of steelsuificient y Wide to cut therefrom the required number, as ten, of said strips each equal in width to the width of a diamond-shaped oint be-' tween parallel sides. The stock after being' cut in a slitting machine into the ten, more or less, individualstrips, is rolled on large spools which are supplied as required to the feeding mechanism. 7 V j Other objects and advantages will appear in the course of the following description.

A preferred embodiment of the invention, whereby "we attain the objects and secure the advantages of the same, is illustrated in the accompanying drawings, and we will proceed to describe the invention with reference to said drawings, although it is to be understood that the form, construction,

arrangement, etc., of the parts in various aspectsare not material and may be modified without departing from the spirit of the invention. f a p In the drawings, in which like reference characters designate like parts throughout the several .views',"Figure 1 is afront eleva tion of feeding mechanism which embodies a practical form of ourinvention as aforesaid; 2, a detail in artial section of a modified form of the eed rolls of said mechanism, Fig. 3, a top plan of certain parts and "members of the fee'dingmechanism which may be and here are in the form ofan attachment mounted ona cutter-head, and removable therefrom, Fig. .4, a longitudinal, vertical section through parts of said attachment, taken on lines 4-4;, looking in the direction of the associated arrow in Fig. 3; Fig; 5, a longitudinal section through one of the feed rolls'of said attach ment; Fig.6, a front end elevation of the attachment; Fig. 7, front side elevation of theattachment; Fig. 8, a sectional detail of the adjustable and tilting means for said feedroll; Fig; 9, a top plan of said cutterhead,which cutter-head is a part of the feeding mechanism; Fig. l0, a front side elevation of said cutter-head; each of F igs.

11, 12, 13, and 14, a sectional detail illustrating a stage of the feeding operation; Fig. 15, a transverse, vertical section through the cutter-head, and, Fig. 16, a lonnecessary fully to understand said mech-.

anism in both structure andfuncti'on. It is to be understood, however, thatthe stripfeeding mechanism can be applied to or used in connection with a machine ormachines otherfth an a glaziers point machine.

bed block 1 is supported on atable 2,

a. portion of said block inclining downwardly from rear to front to provide a bed 3 fora cutter-head bed 51 The bed 5. has at the right-hand end bearings 6-6 for a transversely arranged, oblique shaft 7 Posts 8, each having itsbase firmly set in the bed block 1, are rigidly connected at the top by means of a platform 9.. Secured onthe platform 9 is a plate 1 O'above which is journaled in suitable bearings a horizontal shaft 11.v A feed wheel 12 is mounted on and secured to the forward end of the shaft 11. A stand 13 rises from the plate 10 and'has at its upper end a bearing for a short horizontal shaft 14, on which is mounted a weighted arm 15. The arm 15 carries a roll16'and locates the same directly above thetop of the wheel 12. Secured to the rear terminal of the shaft 11 is a worm-wheel 17. Supported from the bed block l at the right-hand end is a bearing,

1.8 forthe lower end of a vertical shaft 19.

The plate 10 is provided directly above the bearing 18 with a bearing20 for the upper end of the shaft 19. A worm 21 is secured to the upper terminal of the shaft 19,: above the bearing 20, and intermeshes with the worm-wheel 17. Secured to the shaft 19 above the bearing 18 is a wormwheel" 22 which is continuously driven by any suitable means and from any suitable source of power, as is also the shaft 7. Here theshaft 7 is provided with a cone 23 as the direct driving member. A worm 24, Fig. 3, is secured to the shaft 19 above the worm-wheel 22.

Ten steelstrips 25, from a spool (not shown), are passed upwardly through a' slotted guide bar 26, over the wheel 12 and betweenv said wheel and the roll 16, into and through a holder 27, and into ten tubes 28. The bar 26 is supported by an arm 210 thatis rigidly attached to one of the posts 8. The tubes 28' are arranged side by side, being held together bymeans of links 1 29 -29, and are supported at their upper ends by the holder 27, and at their lower ends by an arm 30 that is also rigidly attached to one of the posts 8. The tubes 28 extend to the left from the holder 27, then curve downwardly and to the right, and finallydescend to a plane at some distance above the cutter-head.

Inasmuch as the strips 25 are fed vertically to the cutter-head, and it is essential, after the first cut is'made, to produce a plurality of glaziers points at each active stroke of the movable cutter, it is necessary that said cutter-head be set obliquely to the vertical plane'of the strips when they are fed to the cutter. Furthermore, as it is preferred that each point be equal in width, between either pair of its oppositely disposed edges, to the width of the strips from which the point is cut, the cutter-head is set at an angle of 40 to the vertical plane of said strips, that being the degree angle of'two parallel edges of said points when the latter is placed vertically on one of said edges. Due to this angular setting or position of the cutter-head, the same is shown in Fig. 1 as it is actually located in and as a part of the machine, wherein said cutter head inclines downwardly and forwardly from the back to the front side of said machine.

The sides of the cutter-head bed 5 are at right-angles to the top and bottom thereof. This bed carries cutting mechanism that includes a fixed knife 31. Guiding and feeding means for the strips 25 are located directly above the knife 31 in' position to carry said strips downwardly against the right-hand side of said knife. The aforesaid means are embodied in an attachment that is adapted to be mounted on and secured to and removed from the cutterhead bed, as herein illustrated and described. v

The aforesaid attachment has or consists in part of afixture 32 which has its rear end secured to a lug 33 on the bed 5 by a bolt 34. Bolted to the front end of the fixture 32, at right-angles thereto, is a support 35 which is secured at the base by means of two bolts 36 against the front side of the bed 5, two openings 37, Fig. 10, being tapped into said side to receive said bolts. The fixture 32 has uprights 38,39 and 40, the first of said uprights being the longest and in front and the third, of said uprights being the shortest and in the rear. The uprights 38 and 40 are T- shaped, and mounted thereon are two hori zontal bearings 41 for a shaft 42 on which is mounted a feed roll 43.

The upright 39 at its base is bolted to the right-hand side of the fixture 32,, and at the top has a cross-head 44 that extends to the le tover the roll 43 and supports a vertical guide for the strips 25, said guide i hand side of the plate 50,?150' of the plate being locatedby saidupright and cross-head directly above the bite between said roll and a feed roll 45. This guide consists of a plate 46 having in the left-hand side thereof ten vertical grooves 47 with their upper ends located directly below the lower ends of the tubes 28, and a plate 48 secured to the lefthand side of said first-named plate over saidgrooves. The strips 25 are guided by means of the plates 46 and 48 to the bite between'th'e feed rolls 48 and 45, from above. Secured to the fixture 32 and to the upright 39, directly below the plates 46 and 48, are vertical plates 49 and 50 which form a guide to receive the} strips as they pass down between the aforesaid rolls. The plate 49 is grooved like the plate 46, and'thegguide made up of said first na'medplate andthe plate 50 islocated' to open at the bottom directly above the knife;31, with the right- 48, in the'same vertical plane with the-righthand side of edge of said knife, I

e T he feed roll 45 consists'of a hollow core 51 of rubber or other yielding material,

which is mounted directly on a shaft 52, andof ten rings 53 ofunyielding material,

one for each strip 25 and wide enough to ac-' coinmodate itself to the same, mounted on saidcore. The shaft 52-has screw threaded parts, beyondthe core 51 and the rings 53, to receive nuts 54 54 by means of which said rings are held in place on said core, and may be removed therefrom and replaced thereon, or have new rings substituted for the oldones. V Inthe feed ro1l45 provisionis made for a varying tension on the several strips passing in contact with said roll, whereby. isobtained a vuniform feedjforthe strips, which it might not be possible to obtain if a roll obtain the desired result.

having aone-piece periphery, even though that were made of yielding material, .were

employed. The; yielding core 51, between theasha'ft 52, and the plurality of rings-53,

affords the proper amount of resiliency to Each bearing 41 has a part or arm 55 whichextendsto the left and has thereina recess 56, Fig,8, to receive a bearing block 57 for a horizontal rock-shaft 58, said recess being closed at the top by means of a plate 59 bolted to the arm below. A bolt 7 60,: having a check-nutthereon, is tapped 5 into and through the left-hand "end of each arm 55 to bear against the: corresponding side of the block 57 in said arm. The it rock shaft '58 extends beyondthe arms 55 and has mounted on and securedthereto in the center a handle 61, and at the endstwo arms 62., The arms 62 extend to the right, and in their right-hand terminals the shaft 152, which carries thei feed roll 45, is journaled. Collars 63- -63 are pinnedto the out er terminals of the rock-shaft 58, outside the shaft 52 with-the: feed roll .45thereojn, thus carrying said roll away from thewfeed roll43. This opensthe way for the opera tor topass thestrips 25 from the guide supported by the upright 39 down through into the guide comprising the plates 49 and 50. "Afterthe strips have been properly inserted in the lower guide,the roll 45 is moved-down'intoposition to grasp the strips betweenit and the roll 43 ,at;theright,pbe-

ing thus moved into operative position by rocking to the right the handle 61 and therebyiswinging the arms62 downwardly. The amount iof'tension exertedaby themoll 45 on the -st rips 25 between said roll and the roll 43 is regulatedbythe bolts 60. 7

. i=.-The shaft 42011. which. the roll; 43;

mounted is positively driven, l-from the worm 24 on the shaft 19,; through the medium: of a worm-wheel 64, which intermesheswith said worm, a frictionjmember 65', ,aushaft 1 66, a pair of bevel-gears 67, a shaft 68, and

a universal-joint 69. V A horizo'ntalbxacket 76 is secured to two of; the postswS Which arearran'gedone behind theethenby means of a clamp 71 and bolts 7 2; The bracket'fTO hason the top thereof a pair of bearings 73 for the shaft 66,- also ar bearing ,74 for the shaft 68,the first shaft being at right-ai1gles to thesecond shaft, {The friction member 65 is keyed to the shaft66 adjacent [to the 1 outer terminal thereof as shown "in Fig. 4,

bein prevented from sliding off ofs'aid terminal bya nut $75 to receive which lsaid terminal is screw threadedu :Theu wormwheel 64, is loosely mounted onithe shaft'66 between the friction member 65; and j, the

adjacentbearings 73, and theihub ofasaid 1110 worm-wheel at the end adjacent :-'to lsaid friction, member is provided with a friction member '76; AL collar 7 7 is arranged on the shaft 66 between the hub of the worm-wheel 64' andthe adjacent bearingslT3 and there is V a friction disc "78 between'the" friction members 76: and-65ir The nut/Z 5 not only holds the frictionmember b'a in place on the shaft '66, but, by being rtightened or i loosened, increases or decreases the amount of friction between both. friction) members I and the friction-.disc 7 8; The bevelagear 67 on the shaft 66 is at the leftlof theileft hand bearing 73, while the otherrbevel-gear isat the may end of the Sllllftiidbilclilibfftlle a bearing174; The universal' ointf 69. connects the shaft 68 with theshafti42,and is'provid- V red to take care ofi'or compensate for any {angular relationship that may exist between the axes of the driven bevel-gear =67 andthe and carry with it upwardly the arm's-.621and 7 -.Rotary motion from thevertical shaft 19 is transmitted through'the worn'1' 24, the worm-Wheel 6 1 and its friction member 76, the friction-disc 78, the friction'fmember'65, the shaft '66, the bevel-gears 67,. the shaft 68, and the universal-joint 69, to the shaft 42. The ;roll 43 on the shaft 42 and the roll 45 onthe shaft 52, when in motion, carry .the strips 25 downwardly to' the cutting members-and at the proper rate of speed. A friction drive .instead of, a direct or positive drive is provided for the shaft- 66, in order to enable the parts to slip and said shaft to remain stationary when the strips 25 are clamped and can not be fed down further by thefeed rolls, which latter then cease from rotating. This cessation of movement overcomes the driving action-of the worm-wheel. 64. As soon as thestrips' are released .thewor'm-wheel sets-in motion the parts driven thereby. Thus it is seen that this friction drive; enable's' the stripsto be fed: only as fast as they are cut, -and thus prevents crowding or, any other interference with" the successful operation of the feeding and cutting mechanisms.

I the clamp 71. I

' right of the lug 80, is a nut 40 I; to

and is forced to the right spring 87 interposed in said carriage bea The attachment can be removed after tak ing out the bolts 34211161 36, and taking off 84 forces the lug 80. against the nut 85,*and

exerts a constantypressureito the right on said lug I and'the carriage 79. Slidin ly arriage 79 is a rod 86. Thisrod projects beyond theright-hand end of by'means of a tween the left-hand end of saidzrod anda plug 88xtap'ped into -'the--corresponding end of the passage providedin-said carriage for saidrochspring, and *plug. There is a vertical openingf89' in. the'c'arriage 79, and a pin 90 extends downwardly from the carriage..8l into saidopening, said pin being rigidly attached to the rod 86. The opening 89'is-larger thaii the pin 90 to'allow "said pin to move therein and the sprin'g'87 tends constantly to force the=rod 8 6, saidpin, and the carriage 81 to:the}right. The top of the carriage at thewright-ha'nd. end-is elevated, and secured to the elevated portion.

are ten holding rods191; These rods are arranged side by side and extendto the left over the; top of the-carriage and througha block 92 secured to said carriage atthe leftranged in the longitudinal center of :the carthe-carriage 79,

hand 'endthereof, and through a movable knife 93 let; into and rigidly secured to said block at said end. Bolted to the righthand'end of a bed block 941-, at the left of the block 92,-is a gage-bar 95 which receives the descending strips 25 and assists in positioning them for cutting.

- The fixed knife 31 is mounted on the bed blick 94' andsecured theretoby means of an angular bar 96 bolted to the. top of the bed 5, together with'bolts with which said bar'isequipped." In the block 95, beneath the knife 31, are ten channels 97 to receive the points as they are'cut from'the strips,

and wherein said points are held intermittently bythe rods 91. T

- Mounted on and bolted at 98 to the block .92 a'ndextending-to the leftover a portion of the'movable knife- 93" is a guide bar 99, and. having its ends secured to said bar is a "U-shaped guide bar 100; Slidingly arranged in the bars 99 and 100'are ten clamping plungers 101,each provided intermediate of its ends with a collar 102. The passages inthebarfi99' for the plungers 101 are enlarged' at their right-hand terminals to accommodate the; collars 102; Interposed between the transverse part of the bar 100 and the collars 102 are springs 103. These springs .have'a constant tendency to force the collars 102and the plungers 101 to the left or toward the fixed knife.

The knife 93 isadapted, when actuated to the left or advanced, to make withthe bottom right liand edge of the knife 31 shearing'cuts onthe vertical strips 25, which cuts are" at an angle of 40 to the strips. The rods f91 are in line with the channels 97, and"the plungers 101 are at'the right of the right-hand side of theknife 31. I A transverse rock-shaft 104 is journaled in the" bed- 5 below and a littleto the left of-the 'shaft 7, and mounted on and secured in: two bearings109'that rise from'the carriage '79 at the right-hand 'end thereof. Mounted on and secured to the shaft 7 betweenthebearings 6 are two cams 1 10 and 111, the former being larger than and in front of the latter. The cam 110 isin contact with the roll 107, which roll ;is at the left of saidcam, and the cam 111 is in con tact withqthe arm '106, which'is also'at the left of itsca n'L v 7 'At each revolution of the shaft 7 the cam 110', 'acti ng'on the roll 107 and through the medium of; the shaft 108 and the bearings 109,;forces the carriage 79to the left, or

advances it, against the resiliency of the I returned by said spring to retracted or in itial position, and at the same tiinethe cam 111 acting on the arm 106 rocks said arm to the left on the rock-shaft 104 and with it the arm 105, and said last-named arm forces the rod 86 to the left, againstthe resiliency of the spring 87, with the result thatthe carriage 81 is moved to the left or advanced, through the'medium of the pin'90, and then said last-named spring acts to move said last-named carriage to the right into retracted or initial position. i H Referring toFigs. 11, 12, 13, and 14, in

the order named, it will be seen that, while the" movable knife 93 and the clamping plungers101 are iii-retracted position, the

points (represented at 112) in the channels 97"are prevented from falling out of the entrances to said channels'by the holding rods 91; that, after said strips are carried down further by the rolls 43 and 45, the strips descend over said entrancesnto position to hold said points in place,-said rods are tact with the. gage-bar 95, the strips are clamped by said plungers against the face withdrawn fromthe pathof said strips, and said knife and said plungers begin to ad- Vance; that, by the time the strips are-moved down by'sai'd rolls until thelower ends conof thelfixed knife 31, said movable knife advances into cutting position, and said rods are retracted'sothat they no longer project to theleft beyond said movable knife; and that, while the strips areclamped by the plungers, the movable knife continues to ad- Vance and cuts a set of ten points from the lower-portions of thestrips which cover the entrancesto saidchannels: "Next, the mov- (able knife and: clamping plungers recede,

and the holding rods advance,the parts and members again being disposed as in Fig,

11.1 Whilevthe strips 25"at their bottom edges rest on the gage-bar 95, and are held immovable by the plungers 101 the feed roll 43 ceasesto revolve, and with it the feed roll 45 which is actuated thereby or by the intervening strips. The rolls 43 and'45 are held against rotation, by the frictional resistance offered by the strips, such resist" ance beingsuflicient to holdstationary the parts which intervene between said firstnamed roll-and thefriction member'65,so that the worm-lwheel 64 rotates: on the shaft 66 Without imparting'motion thereto;

Froin the' channels 97 the points 112 as they accumulate are forced 7 into: ten channels 118 in acarrier 114i whichextends-to theleft from the bed block 94.- V

"Assumingthat ten steel istrips 25 v have had their leading ends passed between the feed Wheel 12 and the tension roll 16,-introduced into theholder 27, and movedon into and through thetubes 28, and down between the plates 46 and 48,-thje rolls 43 and45, andthe plates 49 and 50, onto the gage-bar 95, and that said: feedwheel and the shaft 7 are in motion, "the operation isldescribed as folloivsr 1 a i v i At each revolution of the cams 110 and 111,-on the shaft 7, theknife 93, clamping plungers' 101, and holding rods 91 are operated to out ten points from the bottoms of the strips 25:and to advancethe points tancein said channels equal to the thickness of a point; The strips 25 are fed conpreviously cutand in the channels97 a distinuously, although: having their lower ends momentarily retardedby the gage-bar and the clamping plungers 101 while the cut is. being made each, time. oWhatever slackin the. strips may 100C111 during, the time they are clamped is distributed and taken careof inthetubes. i

7 The feed rolls "43 and 45 operate down the strips 25 a distance equal to the Width of a point 112 between any two of its tolcarry parallel sides, during athe 1 time the plungers, 101 are-out of contact Withsaid strips, and

said rolls are idle while the strips are held stationary, as hereinbefore fully explained;

The tenlpoints are cut from the tenistrips 25at: anangle of 40 by the knives 93-,and 315 These points are pushed into the chan-.

nels 97 by the cutting parts :of the knife93,

and held there by the rods 91 while" said knife is retracted'and until said strips are a rolls43 and 45. I :The i'rolli45 whicliis positively driven roll, has ih its periphery ten annular grooves 1-1.5 :each of the proper width to receiveone of thestrips 25; and each ofthe rings 53: of the roll45, which tively, inFig. 2, may be substituted for the is the indirectly driven. roll, has an annular raised, peripheral part to enter one of said grooves andeng'agethe: striptherein, and annular, depressed, peripheral; parts on each side of said raised partto form, with such 2 part or parts in-the "adjacent ring or ring's an annular groove or grooves, the raised parts whiclriform saidgrooves being received in thegroove's in the roll 45,. Ob-

Qviously, the strips 251 in :passing. down betweenthe rolls43, and 45 through the grooves 115 wherein they are confined bee tween the raisednpartszofwthe rings 53g are prevented from moving laterally or becoining displaced, and are perforcefed by said' rollswin straight and undeviatingcourses i -.VVe'c1aim: 1 1' 1 i '1 1. In strip feeding mechanism, f clamping means for a strip," continuously operating" feeding'means for said strip,-rotary feeding means for said strip at the leading end, continuously operating driving means for said last-named feeding means, and means to enable said last-named feeding means to be held against, rotationby the strip when in the grasp ofsaid clampingmeans,:while sai d driving meanscontinues to revolve.

2. In'strlp-feeding mechanism, clamping means fora strip, continuously operating feeding mechanism for said strip, and. intermittently. operating feeding mechanism, for

the leading end portion of said strip, adapted to feed thestrip, an'd'to' remain stationary While thestripis held by :said clamping means. V- x Y 3. In strip-feeding mechanism, a; bed, afix tureattachable to-said bed, and provided with bearing members and a support, a-strip guide attached to'said support, a strip guide attached tosaid fixturefagshaft journaled said bearing members, a feed roll mounted onsaid shaft, a feed roll to cooperate with said first-named "feed roll, a shaft carried by said bearingjmembers for; said secondname'd" feed roll, said guides beingabove and below the bite betweensaid' rolls, and mechanism for said: first-named shaft. 1 1 t 7 4. The combination, in strip-feeding mech anism, with an inclined bed, of a fixture at: tachable to said-bedfand provided with bearing :members and .a support,- an upper strip. guide attached to saidsupport, an under strip guide attached tosaidfixture, a shaftjournaled in said bearing members, a

feed roll mounted on said shaft, a-feedvroll to cooperate with saidfirst-named feed roll, a shaft-"carried. by said bearing members for said second-named feed roll, the'bite'between said rolls being between said upper and .underguides, and driving i-jmechanism v for said first-named shaft. 5511i strip-feeding mechanism, bearing members, arshaftjournaled in said members, a feed roll mounted o'nf said shaft,-,a feedjroll to cooperate vwith saidfirst-named roll, means carried by said? bearing members to locate said second-namedroll in and out of'operative position relative to said-ffirstnamed roll, driving zme'chanismfor said shaft,'and guide means associated with said feed rolls; 1 6.7 In strip-feeding mechanism, an attach; ment comprisinga fixture having bearing members and a support, anupper strip guide attached to said support, an under strip 7 guide attachedto said fixture, a'shaft journ'aled in said bearing-members, a feed roll mounted on said shaftya feed roll to co-, operate with said" first-named feed roll, means carried by-"said bearing members'to locate said second-named feedroll in and out of operative position relativeto said firstnamed feed roll, the bite between saidroHs being. between said upper and under guides, and driving mechanism for said. first-named shaft. 7 o i x 'LIn strip-feeding mechanism, bearing members, a shaft journaled in said members, afeedroll mountedio'n said shaft, a rock shaftjournaled. in said bearing members, armsmountedon said rock-shaft, a shaft journaled in said-arms,-a feed roll mounted 011 said last-named shaft to cooperate with said first-named roll,'driving mechanism for saidfirst-nanned shaft, and guide means asso'ciated'with said rolls. 3 Y

8. 'In'stripieeding mechanism, an attachment comprising ;a"fixtu're having bearing members and a support, an upper-strip guide attached tosaid' support, an under strip guide, attached to 'saidfixture, ashaft; ournaled in said bearing members, a feed roll mounted on said shaft, a rock-shaft journaled insaid bearingmembers, arms mounted on. said rock-shaft, a' shaft journaled in saidarms, a feed roll mounted on saidilastnamed shaft to cooperate with s'aidfirstnamed feed'roll, the bite between-said rolls being between'said upper and under guides, and driving mechanismfor said firstnamed shaft.

9.1In strip-feeding mechanism, a feed roll for" strips tobe cut, said roll comprising a yielding supporting member, and a plurality of unyieldingannular members mounted on saidsupporting member, each of said annular members being adapted peripherally to' engage a'stripi. I r 1 =10. lnstripfceding mechanism, a feed roll for strips tob'e cut,:said-roll. comprising a shaft, ayieldihg c-oiie onsaid'shaft, .a plurality of'unyieldingfrings mounted on said core, and meansto secure-said core and rings to said shaft, each of said ringsbeing adapted pcripherallyto engage a strip.

'11. The -combination, in strip-feeding mechanism, with a-feed roll having peripheral grooves to accommodate strips, of a secend feed .roll. comprising a yielding supporting member, and plurality of unyielding annular members mounted on said supporting member, said unyielding members hav ingiperipheral;parts to-enter said grooves and'engag'e individ'ual strips therein.

12.; Theycombinatiomfini strip-feeding 1I1GCl12LDlSII1,'Wlth 8, ,feedfrol-l having in the peripheryfithereof groovesadapted to 'receivexstrips tobe-cut, of a seconcbfeedroll comprising a: shaft,j a yielding coreon said shaft, a plurality-f of: unyielding rings mounted on saidcore, and-:means to secure saidcore and: rings to saidshaft, said rings ably journaled shaft, driving means for said shaft, said means consisting in part of members which are adapted to yield when a predetermined amount of resistance is set up, a fixture provided with bearing members, a

shaft journaled in said bearing members, a feed roll mounted on said last-named shaft,

and driving means between said shafts.

.14. The combination, in strip-feeding mechanism, with an upright, and a bed, of a bracket having bearing members and means to clamp thesame to said upright, a shaft journaled in said members, a driven member loosely mounted on said shaft, interineshing with said worm, and having a friction member, a friction member secured to said shaft, a friction disc betweensaid friction members, a fixture attachable to said bed, and provided with bearing meme bers, a shaft journaled in; said last-named bearing members, a feed roll mounted on said lastmamed shaft, and driving means between said shafts.

15. In strip-feeding mechanism, an attachment comprising a fixture provided with bearing members and a supporting member, grooved plates secured to said supporting member above and to said fixture below,

cover plates secured to said grooved plates,

- ing members, and a feed roll on said second I a shaft journaled in said bearing members, a feed roll on said shaft, means todrive said shaft, a second shaft carried by said bearshaft to cooperate with said first-named feed roll, the bite between'said rolls being in the same plane with the grooves in said grooved plates.

bearing members and a support, grooved plates secured to said support above and to said fixture below, cover plates secured to said grooved plates, a shaft journaled in said bearing members, -a feed roll mounted on In strip-feeding mechanism, an at- .tachment comprising a fixture provided with so that its length" between said feeding means will be greater than the distance between said means when not slack and a guideway between said means for confining a strip and co-operating therewith when in slack condition to tension the same for urging it towards said intermittently operating means. 19. In mechanism for feeding a metallic I strip comprising in combination, means for continuously feeding a strip, means at the leading end of said strip to intermittently feed successive portions thereof and provideslack in said strip between said feeding means and a guideway between said feeding means for enclosing said slack strip and adapted to co-operate therewith and urge the same towards the feeding means at the leading end of the strip.

CHARLES J. FANCHER. ROBERT A. JOHNSON.

said shaft, means to drive said shaft, rocker arms carried by said bearing members, a shaft journaled in said arms, and afeed roll mounted on said last-named shaft to cooperate with said first-named feed roll, the bite between said rolls being in the same plane with the grooves in said grooved plates.

17. In strip-feeding mechanism, an attachment comprising a fixture provided with bearing members and a support, strip guides secured to said fixture and support, a shaft journaled in said bearing members, a feed roll mounted on said shaft, means to drive said roll, bearing blocks adjustably held in said bearing members, a rock-shaft journaled in said blocks, arms mounted on said rockshaft, a shaft journaled in said arms, and

a feed roll mounted on said last-named shaft to cooperate with said first-named feed roll, the bite between said rolls being in the same plane with said guides.

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