Патент USA US2407319код для вставки
Sepf.'a lo? 1946. J, R, MCLAUGHLIN.' ' AUTOMATIC y 2,407,3Í6g GUTTEIÈ A Filed Oct, 23, 1942 4 Sheets-:Sheet l i l Q Q ITI-6.4. lNvENToR. y JOHN R. McLAuGHLlN. BY @@70.. ATTORNEY. 'ì Sept. 10, 1946. ` ' ' - J. R. MCLAU'GHLIN AUTÓMATIG _ CUTTER . 2,407,316 ì v Filed Oct. 25, 1942 Sheets-Sheet 2 1x WIT-0° XU”, f/'I ' mi I I ’JA mvElvToRl » J HN RMCLAUGHLIN. BY @ë Q. g“ .ATTORNEY Sept. 10, 1946. . J. R. MCLAUGHLIN 2,407,316 AUTOMATIC CUTTER Filed bet. 23, 1942 4 Sheets~Sheet 5 INVENTOR. JOHN R. MCL GHLIN. ÓÁMÍQ.ATTORNEY. . Sept» ï0§11946« - J. R. McLAUG-HLIN ¿4079316 , AUTOMATIC CUTTER l Filed Oct. 25, 1942 4 Sheets-Sheet 4 mvE-ÑToR. r e . P1615. ’ , - ' \\/ N ' y v.lo NRMGLAU HUN. vBY, ä «M7 Q ATTORNEY . Patented Sept. 10, 1946 2,407,316 UNITED STATES` PATENT OFFICE 2,407,316 AUTOMATIC CUTTER John R. McLaughlin, New Brunswick, N. J., as signor, by mesne assignments, to Tampax In corporated, New York, N. Y., a corporation of Delaware Application October 23, 1942, Serial No. 463,095 13 Claims. ( Cl. 164-68) 1 2 This invention relates to apparatus for auto . In connection with the present disclosure, ref matically forming Acompressed form-sustaining erence is herein made to the accompanying draw ings which form a part of this specification. wads of absorbent cotton or the like for use for sanitary purposes, and said apparatus more spe ciñcally relates to devices which are coordinated with a sewing machine and adapted to sever the In the drawings: ' ' Figure 1 is a side View in elevation of an ap paratus which embodies the features of my in withdrawing string which is employed in certain types of these sanitary articles. Prior to being compressed, and when leaving vention. ` Figure 2 is a fragmentary sectional view in ele vation taken transversely through the structure shown in Figure 1 substantially along line II--II of Figure 1, looking in the direction of the ar the sewing machinethe cotton or other material has been cut into elongated pieces with the fibers disposed transversely, and these pieces have been rows. stitched longitudinally in spaced relation to each - Figure 3 is a perspective View of a rotary string - other with a connecting string between them. cutter holder utilized in the device shown in Fig Upon leaving the sewing machine, and prior to ures 1 and 2. ‘ » being operated upon by a compressing and form Figure 4 is a perspective View of a blade-retain ing apparatus, the attached pieces in the form of ing plate used in connection with the holder a continuous strip are passed through devices which are adapted to sever the string close to an end of each piece, thus leaving a “tail” at shown in Figure 3. ' Figure 5 is a plan view of a blade of the type it is desired to employ in connection with the tached to each piece. The present apparatus is designed for the purpose of accurately and effec elements herein shown in Figures 3 and 4._ Figure 6 is a top plan view of the apparatus tively performing this severing operation. disclosed in Figure 1. An object of my present invention is to provide a machine that is adapted to rapidly, successively, ’ and efliciently sever the withdrawing string close to an end edge of each piece of absorbent ma terial, and to do this without injury to the re- . ’ Figure 7 is a perspective View of the gear in dexi'ng roller utilized in conjunction with the as sembled apparatus shown in Figures 1 and 6. Figure 8 is a vertical side elevation of the ap paratus, portions of which are in section substan spective pieces while they are being operated tially along line VIII-VIII'of Figure 6. upon. Figure 9 is a fragmentary sectional view taken substantially along line IX-IX of Figure 6, drawn Another object is to perform the cutting op eration automatically and without interference to a larger scale. with the continuous operation of the apparatus which sews the strings. j ` Figure 10 is a diagrammatic plan view showing , Still another object is to provide an apparatus C17 Cil which is capable of being readily coordinated with the sewing machine, or with the compressing and forming apparatus, or both, while my pres ent apparatus is operating in a continuous man the position of severing Isuccessive strips of cot ton having a stitched connecting `string therebe tween after leaving the sewing machine, and showing the string severed at one of the strips. Figure 11v is a fragmentary sectional View taken substantially along line XI--XI of Figure 6. y Figure 12 is a fragmentary plan View taken sub stantially upon the plane of line XII-XII of Fig ner. The above-mentioned, as well as other objects, aims, and advantages of my improvements, will ure 8. be obvious to persons skilled in the art after the construction and operation of my apparatus is Figure 13 is a perspective View of a cam follower 'shown at the lower portion of Figure 12. understood. It may be mentioned that it is an ß" Figure 14 is a sectional View taken substantially aim to provide an apparatus of novel construc along line XIV-XIV of Figure 12. ’ tion; dependable in use; capable of being readily Figure 15 is a vertical transverse sectional view assembled when being manufactured; and is ef taken substantially along line XV-XV of Fig ñcient in performing the functions for which it ure 8. i may have been devised. ' It is preferred to accomplish the objects and aims of my said invention, and to practice the same, in substantially the manner hereinafter fully described, and as more particularly pointed out in the appended claims. Figure 16 is a perspective View of a trip lever such as shown in assembled association in Fig ure 12. AThe drawings are understood to be more or less schematic for the purpose of illustrating a typical or preferred form of my invention, and in said 2,407,316 3 4 ley 39, with its spindle 5l journaled in swinging drawings the same reference characters are used arms 32, is adapted to maintain the apron 2S taut and take up any slack therein. The arms 3f: are pivotally mounted at their lower ends on studs 33 projecting from the vertical plates C, C', and they to identify the same parts throughout the diverse views. The apparatus which is disclosed herein is mounted in a suitable supporting structure corn» are pulled in the desired direction by coiled prising a horizontal base A, having reetB, nand springs' 34,»34, that have their ends suitably con nected to 'said arms and to lateral pins @5, 35 pro jecting from the inner faces of the vertical plates provided with vspaced parallel plates’C, C' ,ì arising vertically from said baseto provide'mounting’s and bearings for the instrumentalities of the appara tus. A lateral extension A' projects to one side ofv the feed or front end of the base A, uponfwhi'ch Cj'C’, as shown in Figure 9. Presser rollers 36, 3S, are mounted above and extension a suitable speed-reducer D is mounted in contact with the top reach or run of the apron strip of material that moves through themachine, 25 dotted lines »in Figure 9 , and frictionally press down 2Iiv so'-> thatvthey normally will bear down upon and driven by a shaft E receiving motion' fron'i> ,a theïa'pro'n. The‘trunnions 3l, 3? of these presser driving pulley E' that is actuated from any suit able source. A transmission'shaft E2 isY connectedv 15 'rollers'SGg 36, rotate freely in upwardly opening verticalslots" 33, 33, in carriers 3S, 39, secured by a clutch device E3 to the main 'shaft Iii of the to the-upper edges of the vertical plates C, C', apparatus that is mounted in' the vertical plates` and said rollers 35, t6, are preferably of solid construction of sufiicient weight to firmly con Suitable vertically disposed guide plates l I; that are fiared away from each other at their outer 20 tact the pieces or wadsl of cotton as the latter successively pass beneathfsaid rollers 35, 36 on ends,~ extend ‘ longitudinally between» the i vertical the'apron- 26' while moving‘through the machine. plate-s C, C' from the|` front’ towardsfthe‘rear' of When thewads of cottonen'gage the presser roll the structure for the'purp'os‘e 'of g'uiding'and' pre ers‘ 36,136“, the'latter will be lifted as shown in venting lateral displacement of the"l articles'for and a conveyor apron II 2 receives theVV articles' after they have been operated upon between the‘gïuides I I and conveysv the separated' articles ï away-` from the apparatus. The conveyor> aproni I~2f travels” upon an in on'said’ wads'until the latter have passed said rollers 3S after' which the rollers 36, 35, will each return to their apron-contacting positions as shown-'in the‘full lines in said ñgure. The-'wads of cotton X are elongated and are clined bed' I 3‘secured toupwardly'eiëtending arms provided with longitudinal stitching Y, and said I4 that are preferably removably connected to the wads are spaced apart suitable distances and are, when being fed into the machine, joined by a string Z which is a continuation of the stitching Y'thatl is adapted to be severed as shown in Fig discharge end-ofl the‘ apparatus; andfs‘aid apron I2> passes around a' pulley’ Ie'at the low'er'end of the bed I3, that has its spindle I6, which-fis 'jour' naledin 'saidï arms I 4,' provided "with an' extended end carrying a‘ sprocket- I'I*A that is’driven- -by a chain I8. The main shaft IQ isiprovided with a' sprocket i5 ureïli) during transit through the machine. The wads’i-and the-strings provide a continuous strip of- material when fed into the apparatus. A't'fthe front end ofi the machine there is a corÚ that is' engaged with-a chain2€l~extending'towards 40 rugated feed roller lie that is fast on the hori zontaïl«main shaft lü that has its end opposite the discharge or rear'fend'of` the `apparatu-'g"where the` sprocket Ig provided with a gear di. Coact saidl chain 20 engages-another sprocket 2 I‘ on" the ing with this feed roller ¿it is an opposing presser~ adjacent end of a jack-shaftï 2'2-'journale’d in- the roller`42 that has its spindle C253 carried in the verticalplatesC; C' through'the- medium' of a sprocket, 2-3» upon-fthe‘otherendof said jack-shaft 45 free-or" swinging ends~ of elongated lever-arms lili that‘incline downward towards the opposite end 22 and-is also engaged withthe’chain- i3; whereby the apron-engaged pulley I5l is actuated‘atrsub ofthe machine where their rear ends are secured stantiallythe- same »speedgasgthe pulley 20.’ that is secured tothe jack-shaft ‘22’ between‘the verti caljplates C, C'. The apron bed~I ß and supporting arms,` lIll may bean’independent-structure that is to the spindle- 28 upon which the-apron-pulley 25 is‘ï'lo’o'sely'mounted for rotation. Said spindle 28 performs the function of a rock-shaft for» ac tuatingcertain portions of thermachine that con trol»the timedv operation of the cutter as later explained. The' presser-roller Il? is yieldably urged towards the corrugated- feed roller ¿lil by lower- ends> ofrsai‘d arms I4 are provided with downwardly- opening slots Ida-'that embrace ad 55 meanslof coiled springs 45, 45, that are connected at their- upper ends to the projecting portions jacent which permits portions the of- the structure pulley .being spindleor lifted‘off shaftthe of-íspindle 133 andv at their lower ends are engaged with lateral pins d5, ¿lâ on the vertical plates machine. IÈi‘he intermediate portions of they arms I4 have supports lßb‘movably connected to' them C, C’. by pivot members IAC. v ,Y v A horizontal shaft [il is journaled in bearings 60 Aboutn'iidway- the length ofthe vertical-plates in the vertical plates C, C', with its end portions C, C' there is a small pulley 25 about which an projected beyond said plates in the manner shown aprorrZS is engaged and whichjsdriven by the in Figure' 2’, and the intermediate portion of detachably connected to the delivery or rear end of "the‘apparatus as detailed in Figure 1'1. The pulley 24 onAV the spindle or shaft' 22- that> extends between the vertical plates C,VC' and is journaled . said *shaftv 41 has a roller ¿it anchored to it for rotation therewith. This roller di is located be therein for rotation` Said apron 2B is disposed tween the corrugated feed roller dû and the apron with its upper reach in a substantially horizontal pulley 25 sothat the upper surface of said roller 48 is disposed in substantially the horizontal plane> plane as shown in Figure 9, and there is a small of the upper reach or run of the-apron'Ziâ. Above idle pulley 2l engaged with the under surface of the apron 25 intermediate thepulleys 24 and 25 70 and in vertical alignment with'the axis of roller 48, there isi' a rotatable severing or cutting device the purpose of which will be later explained. which embodies a mutilated cylinder d@ secured Pulleys 25 and 2'! have their respective spindles, to a rotatable shaft 5o that is journaled in the 28- and 29, suitably journaled in adjacent portions of thel vertical plates C, C', the pulley 25 being freely rotatable on‘its spindle- 28. A tension pul vertical plates C, C', This cylindrical member 49 has a ilattened portion 5l and itis also’pro 2,407,316 5 vided with an angular groove or notch 52 which The sleeve 13 has alined slots 18 to receive the projecting ends of a transverse pin 19 that passes through said shaft 41, and a coiled spring BE) sharpened edge of said blade projects beyond the within the sleeve 13, between the end of shaft 41 circumferential surface of said cylindrical mem and the inner end of the conical head 14, nor ber 49 in the manner shown in Figure 9 so that mally urges the clutch member outwardly on the it will come into contactive engagement with the shaft 41 and away from the clutch member 1i. roller 48 when these portions of the machine are When the solenoid 54 is energized, the lever 55 in operation. will swing inwardly and move the clutch member The movement of the cutting cylinder 49 is 10 12 into engagement with the other member 1I, timed so that the blade 53 will contact and sever thereby connecting the power mechanism through the connecting string Z between the wads of cot gears 4| , 69 and 68 to the shaft 41, causing the tan at a location close to the trailing edge of each latter to rotate and turn the roller 45 and the cut wad as shown in Figure l0. The shafts 41 and ter cylinder 49 through the instrumentalities of 50 have gears 55 and 56 respectively that are se 15 the gears 55 and 55. It is desirable that this op cured to their extended ends and which are in eration be started prior to the disengagement of mesh with each other so that they will be rotated the roller l59 from cam notch 58, and this is read in opposite directions and at the same speed. ily accomplished by providing an elongated finger The roller 48 and the cutter member 45 are pref 8l projecting from a boss 82 that is secured to erably adapted to be intermittently rotated for 20 the rock-shaft 28 between the rocker-arm 50 and each severing or cutting operation performed >by the vertical plate C'. This finger 8i is disposed the blade 53, and when the wad X is between the alongside the portion of said arm 55 which pro roller 48 and the curved surface of cutter mem jects towards switch-button 5i, and it is of the provides a seat in which a blade 53 is secured by an adjustable' clamping plate 54 so that the ber 49 said wad will be in a compressed condi saine length as said arm portion just mentioned. tion due to the fact that the space between the 25 Thus, when the wad X enters between the ad surfaces of these elements is preferably less than vancing rollers 49 and 42 and lifts the latter roller the thickness of a wad X. 42, the carrier arms 44 thereof will turn the rock The end of shaft 41 beyo-nd its gear 55 has a shaft 23 causing the finger 8| to act as a detent cam element 51 secured to it, and the edge of or pawl and operate the switch-button 6|, which said cam is provided with a notch 58 in which 30 will actuate the clutch to start the rotation of a small roller 59, rotatably mounted upon the the cutter devices. When the wad X passes be adjacent end of a rocker-arm 6i), is adapted to yond the advancing rollers 40-42, the latter roll seat while the cutter rollers 48~-45 are intermit er42 will drop back to normal position (Figure 9) tently at rest or inactive. Said rocker-arm El) is and the finger 8i will be thereby disengaged from pivotally mounted for free movement upon the 35 the switch-button 6i.- I-lowever, the rocker-arm extended portion of the apron-roller spindle 28, 5t will continue to hold the button el depressed and the end of said arm opposite its roller 59 is until the roller '59 has left the cam edge and has adjacent an electric switch operating button 5i. seated in the notch 58, whereupon the solenoid A coiled spring 62, extending between the »roller will be de-energized and the clutch elements carrying portion of the rocker-arm 60 and a pin 40 ‘li-12 will be separated by the action of the 63 on the vertical plate C, maintains the opposite spring 80. portion of said arm out of engagement with said Although the advancing or feed rollers «l5-42 K switch-button 5l as shown in Figure 8, but when and the cutter devices 48-49, when operating, the roller 59 moves out of the notch 58 and en travel at the same number of revolutions per min gages the edges of cam 51 the arm 6i! will be 45 ute, the larger diameters of the cutter rollers rocked to depress the switch-button El and thus maintain the latter in this position until the cam has made one revolution and the roller 55 has again seated in the notch 58. ‘ 41-49 give them a higher peripheral speed than the feed rollers ¿lil-42. This has the effect that when the cutting action takes place the part being cut is given tension by the higher surface speed The depressing of the switch-button El is 50 of said cutter rollers. The drive of the apron 26 is so arranged that the lineal speed thereof is greater than the surface speed of the cutter.. rollers 48-49. As the material passes beneath the roller 35, the friction of the material against from the base A and which, at its free end, is ccn 55 the apron 2E will keep the material under tension, nected by a link G1 to the movable element of the while the cutting action is taking place, to enable solenoid 54. The shaft 41, which carries the cam the blade 53 to sever the string Z completely and 51 at one end, has its opposite end extended be cleanly. yond the vertical plate C’ and has a gear 68 loose As the material enters rollers 45-42, the latter ly mounted on it in mesh with an idle gear 59 that 60 roller 42 raises, and this movement causes sole is in mesh with gear 4i on the main shaft I5, so noid E4 to be energized, thus throwing the toothed that the gear 58 will run free on its shaft 41, and clutch members into assembly to start the cutting said gear is maintained against longitudinal rollers, The position of the blade 53 is adjustable movement on shaft 41 by a shoulder 10 on the in relation to the position of the cam-notch 55 so adjacent portion of said shaft. 65 that after the blade has started to move it will A clutch member 1| is secured to said gear 68, engage the advancing material at the exact point and an opposing clutch member 12 is slidably when the string Z is to be out. As the Wads travel mounted on and rotatable with said shaft beyond on the apron 25, which has a greater surface speed the shoulder 1E). A tubular sleeve 13, formed With than the peripheral speed of the cutter rollers clutch member 12, surrounds shaft 41 and pro 45-49, the tension which is thus imparted to the jects beyond the end thereof where it is provided strio of moving material causes the string to with a conical head, the apex of which latter is tighten so that it is cut cleanly and is definitely engaged with the enlarged end 15 of an adjusting separated from the leading wad X close to the screw 16 carried in the adjacent portion of lever trailing edge thereof. After the cutter rollers 65 and maintained in position by lock-nut 11. , 48-49 have made the cut, the clutch elements will adapted to form an electric circuit which will en ergize and actuate a solenoid 64 or the like, and the movement of the solenoid operates a lever E5 that is fulcrumed at one end on a post 65 arising 7~ eng'agem'ent' withl each» other through' themediumv ci? the edg’e‘ofïc'am 57 holding the' remain' switch-button depressed until’the> cutter rollers have made one complete revolution'and have re turned to theirstarting'fpbsitioris. Theïr'oller'äâ moving means-for’receivingtne advanced portion ofthestripV and adapted totighten the adjacent portion‘ thereof; intermittently operable sever ing' devices interposed between said rollers and - said tightening means; and devices Controlling the'rop'eration-o'f said severing devices, said con dropping into cam-notchvâëi will cle-energize thetrol devices: having operable connection with soienoid and permit the clutch elements to become. said bodily movable roller. separated. The roller 42- at this moment Awill have 6. An apparatus for severing articles from a returned to its> normal position well ahead of the continuous strip, embodying opposed feed rollers 10 iast-described movements of theiappara’tus, and for advancing the strip, one of said rollers being the-cutter members are again ready for the next movable bodily towards and away from the other wad oi- thestrip‘oi material as itpasses between roller; means for' receiving the advanced strip the advancing rollers eik-ft2'. The aforesaid cycle and adapted to tighten the adjacent portion oi" operation lwill continue so long as the continu thereof; severing devices interposed between said ous> strip of material is íedfto the-apparatus from rollers andsaidtig’htening means; and devices the stitching machine. controlling the operation of said severing devices, While I have describedmy’invention in.l detail said control-devices comprising a cam; a clutch in itspresent embodiment or preferred form, it w1: Lice obvious to persons skilled in the art, after operatively connecting said severing devices to a and modiiicaticns may be made tnerein without departing `from the spirit or scope thereof. I aim in the appended claims' to- cover all such'changes necting said clutch to said cam. '7. An apparatus fori severing articles from- a and modiiications. encor-said- rolle'rs being bodily movable towards un'derstanding my invention, that various changes 20 drive mechanism; and means operatively con 1'. An apparatus for severing articles from'Y a continuousstrip, embodying continuously mov continuous strip, embodying continuously mov-f ing opposed‘feed'rollersï for advancing the strip, and away from> the other roller; continuously moving means for receiving the advanced por tion’- of the strip and adapted to tighten the adjacent portion thereof; severing devices inter moving means iorï- receiving the- advanced por tion of the strip; intermittently operable- sever 30 posed-between said rollers and said tightening means; and-devices controlling the' operation of ing devices interposedbetween said advancing said severing devices, said control devices corn means and said receiving‘means; and electro-re prising a camp; a clutch'- connecting said severingv sponsive means controlling the operation of said devices to a drive mechanism; and means operasevering devices, said electro-responsive control~ tively connecting said clutch to said'cam. means being’timed responsive to the position of *8.* An` apparatus for severing a continuous and having operable connection with a portion strip» having" spaced enlarged portions, embody of said strip advancing means. ing opposed rotatable feed roliers adapted to 2. An apparatus for severing articles' from a continuouslyad'vance the strip, one of said rollers continuousv strip, embodyingmeans for’ advanc movable bodily away from the other roller when ing the strip; means for receiving the advanced engaged- with an enlarged portion of the strip; portion of the strip; severing devices interposed pivoted-arms upon which said movable roller is between? said advancing means and said receiv mounted; intermittently operable severing de ing means; and means controlling the operation vices spaced from said rollers in the line of travel of >said severing devices, saidcontrol means com-y of- the strip; a drive-shaft operatively connected prising a-cam; a clutch connecting said severing> to and actuating said rollers; means operatively devices toA a drive mechanism;V and means oper connecting said drive-shaft> and severing de atively connecting said clutch to said-cam. vices; a clutch interposedV in said means; electro 3. An apparatus-for'> severing articles from- a responsive devices for moving said clutch into' continuous strip, embodying continuously mov ing-means for advancing the strip; continuously Si) active and inactive positions whereby said sev ering devices are intermittently actuated; and moving means for receiving the advanced portion an indexing nnger having operative connection of the strip; intermittently operable severing with-and actuated by said pivoted arms for con devices- interposed between said advancing trolling said electro-responsive devices. means and said receiving' means; and means 9;y An apparatus for severing a continuous strip controlling the operation of said severing devices, having spaced enlarged portions, embodying op said control'rnea'ns comprisingV a cam; a’ clutch posedv feed? rollers adapted to continuously ad connecting said severing devices to a drive mech vance‘the'strip, one of said rollers movable 'bodily anism; and means operatively connecting said away from the otherv roller when engaged with clutch to said cam. an enlarged portion of' the strip; pivoted arms 4. An apparatus’ for severing’ articles from a uponv which said movable roller is mounted; a continuous strip, embodying opposed feed rollers rock-shaft' actuated by the movement of said for advancing the’ strip, one of said rollers being arms; intermittently operable severing devices bodily movable towards and away from the other spaced from saidiroilersiin the line of travel of roller; means receiving the advanced portion the strip; a drive-shaft operatively connected to of the strip and adapted to tighten the adjacent and; actuating said roilers; means operatively portion thereof ;v severing devices interposedbe connecting said'drive-shaft'and severing means; a tween said rollers and said tightening means; clutch-interposed in said means; electro-respon and' devices controlling the operation of said sev sive devices fo'r moving said clutch into active and ering devices, said control devices having opera inactive positions whereby said severing devices ble connection with said bodily movable roller. are intermittently'a'ctuated; and an indexing` ele 5. An apparatus for severing articles from a ment secured to and" actuated by‘said' rock-shaft continuous strip, embodying -continuously4 movl" forco‘ntrolling saidelectro-responsive devices. ing opposed feed rollers for advancing the strip, l‘Oi Anv apparatus for! severing a continuous one ofV said rollers being bodiiy movable towards ing'r'n'eans for advancing the'strip; continuously and away" from thel other roller; continuously 75 str-ip'y having’ spaced' enlarged portions, embodying 2,407,316 opposed rotatable feed rollers adapted to continu ously advance the strip, one of said rollers mov able bodily away from the other roller when en 10 embodying opposed rotatable feed rollers adapted to continuously advance the strip, one of said rollers movable bodily away from the other roller; gaged with an enlarged portion of the strip; `pivoted arms upon which said movable roller is `pivoted arms upon which said movable roller is C21 mounted; intermittently movable severing devices mounted; intermittently operable severing devices spaced from said rollers in the line of travel of spaced from said rollers in the line of travel of the strip; a drive-shaft operatively connected to and the strip; an apron movable in the direction of travel of the strip; presser means coacting with said apron to maintain the strip in frictional con actuating said rollers; means operatively con necting said drive-shaft and severing devices; a L10 tact therewith and also to tighten the strip be clutch interposed in said means; electro-respon tween said apron and said rollers during cutting sive devices for moving said clutch into active operation of said severing devices; a drive shaft and inactive positions whereby said severing de operatively connected to and actuating said roll vices are intermittently actuated; an indexing ers; means operatively connecting said drive finger having operative connection with and actu 15 shaft and severing devices; a clutch interposed ated by said pivoted arms for initially controlling in said means; electro-responsive devices for mov said electro-responsive devices; a cam rotated by ing said clutch into active and inactive positions said severing devices; and a rocker-arm engaged whereby said severing devices are intermittently with and actuated by said cam, said rocker-arm operated; and an indexing member having opera adapted to control said electro-responsive devices 20 tive connection with and actuated by said pivoted subsequent to the effective operation of said in arms for controlling said electro-responsive dexing ñnger. 11. An apparatus for severing a continuous devices. 13. An apparatus for severing a continuous strip embodying opposed feed rollers adapted to con continuously advance the strip, one of said rollers 25 tinuously advance the strip, one of said rollers movable bodily away from the other roller; piv movable bodily away from the other roller; piv strip, embodying opposed -feed rollers adapted to oted arms upon which said movable roller is oted arms upon which said movable roller is mounted; a rock-shaft actuated by the movement mounted; an apron movable in the direction of of said arms; intermittently movable severing travel of the strip; means coacting with said devices spaced from said rollers in the line of 30 apron to maintain the strip in frictiona] contact travel of the strip; a drive-shaft operatively con therewith and also to tighten the strip between nected to and actuating said rollers; means opera said apron and said rollers during the cutting tively connecting said drive-shaft and severing operation of the severing devices; a rock-shaft devices; a clutch interposed in said means; elec actuated by the movement of said arms; intermit tro-responsive devices for moving said clutch into 35 tently operable severing devices spaced from said active and inactive positions whereby said sever rollers in the line of travel of the strip; a drive ing devices are intermittently actuated; an indeX- Y shaft operatively connected to and actuating said ing linger secured to and actuated by said rock rollers; means operatively connecting said drive shaft for initially controlling said electro-respon shaft and severing devices; a clutch interposed in sive devices; a cam actuated by said severing 40 said means; electro-responsive devices for moving devices; and a rocker-arm engaged with and said clutch into active and inactive positions actuated by said cam, said rocker-arm adapted whereby said severing devices are intermittently to control said electro-responsive devices subse actuated; and an indexing element secured to and quent to the effective operation of said indexing actuated by said rock-shaft for controlling said finger. s n 12. An apparatus for severing a continuous strip 45 electro-responsive devices. JOHN R. MCLAUGHIJN.