US1281231A

US1281231A - Machine for cutting corrugated paper-board.

Info

Publication number: US1281231A
Authority: US
Inventors: Melvan L Twomley; George S Wright
Original assignee: SEFTON Manufacturing CORP
Current assignee: SEFTON Manufacturing CORP
Priority date: 1914-12-19
Filing date: 1914-12-19
Publication date: 1918-10-08
Anticipated expiration: 1935-10-08

Description

M. L. TWOML EY ape. s. WRIGHT.

MACHINE FOR CUTTING CORRUGATED PAPER BOARD.

APPLICATION FILED DEC. 19. 1914.

Patented Oct. 8, 1918 6 SHEETS-SHEET 1.

Patented (m.- 8, 191&

6 SHEETS-*SHEET 2.

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:i. II||||||-Ii lillil r|||||||||1|||il|| 1 .1 www Am w o 9 RN EQBW 7 WW 0 o 0S r 11 o o V J/ o o 0 J v 5 n WQN 6 1 I! I i I l I I l I I I I I i I I I l I I I |||,l|| I l I I l I I I 1 I I I I l ilrllr '6 I- l E2 II: NW v L. TWOMLEY & G. S. WRIGHT. MACHINE FOR CUTTING CORRUGATED PAPER BOARD. APPLICATION FILED DEC. I9, 1914.

M. L. TWOMLEY & G. SLWRIGHT.

MACHINE FOR CUTTING CORRUGATED PAPER BOARD.

APPLICATHJN FILED DE( I. l9. 19H.

Patented Oct. 8, 1918..

6 $HEETSSHEET 3.

V b r N lave/2702 M. L. TWOMLEY & G. S. WRIGHT. MACHINE FOR cumwe CORRUGATED PAPER BOARD.

APPLICATION FILED DEC. 19, 1914- Patented Oct. 8, 1918.

6 SHEETS-SHEET 4.

M. L. TWOMLEY & e. s. WRIGPIT. MACHINE FOR CUTTING CORRUGATED PAPER BOARD.

APPLICATION FZLED DE C.19, 1914.

Patented Oct. 8, 1918.

6 SHEETS-SHEET 5 Z;Z6 "5568 l I MMJZQ M. L. TWOMLEY & G. S. WRIGHT. MACHINE FOR cumma CORRUGATED PAPER BOARD.

APPLICATION FILED DEC. 19. I914.

1 Q8L231, Patented 0ct.8,19l&

6 SHEETS-SHEET 6.

MELVAN L. TWOMLEY, OF CHICAGO, ILLINOIS, AND GEORGE s. WRIGHT, or ANDERSON, INDIANA, ASSIGNORS, BY MEsNE ASSIGNMENTS, TO SEFTON MANUFACTURING CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OE NEW YORK.

Specification of Letters Patent.

Patented Oct. 8, 1918.

Application filed December 19, 1914. Serial NO. 878,101.

To (all whom, it may concern:

Be it known that we, MELVAN L. TWOM- LEY and GEORGE S. WRIGHT, citizens of the United States, residing at Chicago, county of Cook, and State of Illinois and Anderson, county of Madison, and gtate of Indiana, respectively, have invented certain new and useful Improvements in Machines for Cutting Corrugated Paper-Board and the like, of which the following is a specification.

The mechanism is particularly adapted to cutting corrugated paper board into any desired equal lengths and is shown in connection with a machine for forming that material, though it is also adapted for severing lengths of other materials. Corrugated board, as is well known, consists of three plies of heavy paper or cardboard, an 1ntermediate ply which is corrugated and a pair of lining or facing plies or sheets which are secured by cement of some suitable kind to the crowns of the corrugations upon 'opposite sides of the intermediate sheet. Corrugated board so formed possesses considerable rigidity andwhen made in flat sheets can be bent or warped only very slightly w thout destroying the strength of the material or actually crushing it. In order to cut the strip of continuous corrugated board as it is fed from the forming machine without injury it is therefore necessary to provide a cuttin machine which will not warp or bend t e board seriously. It is further necessary or desirable that the cellular character of the board be not destroyed at the cut ends by crushing the material between the knives. It is the purpose of our invention to provide a machine of this character which will neither bend nor crush the board but will receive it as it comes from the forming machine andnccurately sever it into any desired lengths without injuring it 1n the slightest degree.

In the accompanying drawing We have shown our invention as applied to a forming machine of the nature covered by said earlier application. It is to be understood, however, as previously explained that the invention is not confined to machines operating in this relation nor is it confined to the specific mechanism shown and described herein, the detailed disclosure being for the purpose of cxemplification; the scope of the invention, however, is defined in the follow- 5 a horizontal section of a part of the machine upon line 55 of Fig. 4; Fig. 6 a vertical longitudinal section upon the offset line 6-6 of Fig. 5; F ig. 7 a vertical longitudinal section upon the line 7-7 of Fig. 5; Fig. 8

a vertical longitudinal section of a part of the machine on the line 8-8 of Fig. 5; and Fig. 9 is a partial vertical longitudinal section upon the line 9-9 of Fig. 5.

The arrows on the lines of section on Fig. 5 show the direction in which the several views are taken and the same character of reference is applied to each part throughout the drawings and specification.

The side plates 108 which are or may be of cast metal support the rear ends of the

longitudinal members

109, 96 and 110 which support lagging belts comprising the lags. or slats 24, 25 and the

endless chains

22, 23 on which said lags are carried. It will be understood that there are two endless chains for each lagging belt and said chains are supported at their rear ends by the sprockets 90, 94 which are carried by shafts 113, 114 mounted in housings formed upon the side plates 108. This or similar lagging is commonly employed in corrugated board making machines as seen, for example, in patent to Ferres, 746,807 granted December 15, 1903, and need not be further described.

The power shaft 117 is likewise journaled in said castings and provided with a belt pulley 118 of ordinary character for driving the same. The power shaft is further provided with a gear wheel 119 meshing with the gear 120 upon the shaft 114 which carries gear 120 and the sprockets for the lower lagging belt and a gear 121 upon the shaft carrying the sprockets for the upper lagging belt engages gear 120 and is of the same diameter therewith. (See Fig. 3.) Thus the rotation of the power shaft drives the lagging belts but at a considerably reduced speed.

The side plates 122 for supporting the cutting or shearing mechanism are bolted at 123 to side plates 108. A table124 with an. inclined forward edge 125 is located in a position to receive the board as it comes from the lagging belts and is suitably supported upon upward extensions 126 of the side frames. (See Fig. 3.) The cutting mechanism proper is located just beyond this table. As the board is fed continuously, and it is practically impossible to perform the entire cutting operation instantaneously, it is necessary 1n order to avoid buckling the board that the shearing mechanism accompany or move at an equal speed with the board while the knives are in contact with the latter. For this purpose the entire shearing mechanism is mounted in a frame comprising a pair of side or cheek pieces 127 which are pivoted upon a shaft 128 which also has other offices to perform and is located at the lower rear end of the machine. The cheek pieces 127 are connected at their upper ends by a ribbed top plate 129 which is bolted to flanges upon said cheek pieces and the latter are also connected intermediate their ends by a shelf or brace 130. Between these cheek pieces is mounted a flanged knife support 131 which is formed on its rear face with a ledge or rib 132, and to which the cutting blade proper 133 is fastened by bolts 134. The upper or movable knife comprises the usual blade 144 which is secured to a casting 145 the ends of which slide in ways formed in the cheek pieces.

-(See Fig. 3.) The check pieces are formed with ways or slots 146 extending downward from their upper edges through which extend wrist pms 147 for connection to the links 148 by which the knife is operated. The links 148 are reciprocated by cams upon the shaft 128 above mentioned which also carries cams by which the .pivoted knife structure is oscillated to cause the knives to travel with the board; The cams 149 for reciprocating the knives are mounted upon the ends of shaft 128 and consist of disks keyed thereon having internal channels 150 (see Fig. 1) which receive antifriction rollers 151 mounted upon the ends of the respective links 148. As shown in Fig.1 the cam groove is concentric except for the limited portion 152 which is sharply inturned toward the center of the cam to give a short reciprocation to the knife. The links are prevented from other than a reciprocating movement by guides153. The cams 154 for oscillating the knife structure as a whole are located immediately within the side frames .122 (see Fig. 5) and are formed with cam grooves 155 (see Fig. 3) which receive respectively rollers 156 upon bell cranks 157 per arms of said bell cranks are connected by links 159 to brackets 160 bolted to the sta-' tionary knife support (see Fig. 3) so that the shearing mechanism is given an oscillation with each complete rotation of shaft 128.

Normally shaft 128 is at rest but it is provided with a clutch 161 one member of which is keyed to it and the other member loose on said shaft and constantly driven from the main drive shaft. For this purpose the constantly-driven member 162 has securedthereto a sprocket 163 (see Fig. 5) which is driven by a chain 164 passing around the same and around a sprocket 165 upon the drive shaft. An idler 166 is employed to maintain the chain in position. The driving member of the clutch is journaled at 167 upon shaft 128 (see Fig. 5) and prevented from longitudinal movement thereon by a pinned collar 168 and a screw collar 169. The driven clutch member 170 is keyed upon the shaft and reciprocated into and out of engagement with the driving clutch member by a bell crank lever 171 connected to a collar 172 journaled upon a reduced neck 173 on said driven clutch member and held in position thereon by nuts 174, 174.

As heretofore stated the shaft 128 is normally at rest and only rotated when a length of the board is to be cut off. The clutch shifter by which the shaft is set in motion is controlled in its operation by adjustable means driven by the operating mechanism of the machine which may be so set as to cause to be cut off any lengths of material desired. For this purpose the bell crank 171 is normally restrained against the influence of spring 175 by which the clutch is thrown into engagement and to which reference will be made later by a latch 176 pivoted at 177 upon the frame. 'As seen in Fig. 6 the long arm 171 of the bell crank is formed with a housing 178 for containing a follower 179 and a spring 180 by which the follower is depressed into contact'with the shouldered end catch 176 of the latch 176. The downward movement of the follower 179 is limited. however, so that a relatively slight downward movement of the latch releases it therefrom. The other end of the latch carries a roller 181 and catch shoulder 182 and is normally pressed into contact with a revoluble disk 183 by a spring 184 mounted in housing 185 in the frame of the machine. The disk 183 is provided with a depression 186 which receives the roller upon the latch and a notch 187 for the catch 182 so that when the depression and notch come opposite the roll and catch the spring 184 throws the corresponding end of the latch upward and arm 176 downward and releases the bell crank 171 and as above stated the bell crank then permits the driven clutch member to be shifted under the influence of spring 17 The rotation of the controlling disk 183 is accomplished in the following manner: The shaft 113 upon which the rear sprockets for the upper lagging belt are mounted is provided with a beveled pinion 188 which meshes with and drives a similar pinion 189 upon an inclined shaft 190 which is mounted in suitable bearings 191192 attached to one of the end frames of the machine and outside the latter. The inclined shaft is parallel to the face of a friction disk 193 which is rigidly mounted upon the same shaft 194 to which the controller disk 183 is secured. A friction roller 195.is keyed to shaft 190 and adjustable longitudinally thereof toward and from the'center of the friction disk so that by adjusting the roller with respect to the friction disk the speed of the latter may I be adjusted. The friction roller is engaged by a collar 196 which is pinned at 197 to a shifting rod 198, the upper end of which is formed with teeth 199 constituting a rack.

A hand-wheel 200 is journa'led upon the side frame of the machine adjacent the rack and carries a pinion 201 in mesh with the latter so that by turning the hand-wheel the rack and shifting rod may be reciprocated to adjust the friction roller toward and from the center of the friction disk. For convenience in setting-the speed of the friction disk a dial 202 is mounted concentric with the hand-wheel and the latter carries a hand pinned at 205 to the shaft and the'pressure,

203 which moves over the dial. Obviously by rotating the hand-wheel the friction ber of the clutch is pressed into engagement with driving member (see Fig. 5) is in closed within a housing sleeve 204 which is of the'spring may be adjusted by a sleeve 206 threaded upon an extension 207 of nut 174'. In order. to unship theclutch after each-operation of the shears the housing 204 is formed on its exterior with a cam 208 which cooperates with a roller 209 journaled upon the end 171 of the bell crank lever, the cam being so formed and arranged as to thrust the arm 171 outward on the completion of the operation of the shears. When the bell crank is first released by the depression of the "latch 176 and the clutch moves into engagement the follower 179 moves to the right, (as seen in Fig. 6) so that its extended end 17 9 is above the raised or shouldered portion 176 of the latch. As

soon, however, as the roller 181 on latch 17 6 as above described the follower slides over the raised face 17 6'? of the latch to the left (as seen in Fig. 6) until the projecting end thereof drops behind the shoulder on the latch which thereupon retains the bell crank against the pressure of spring 17 5 until the latch is again released by the controller disk. After the release of the driven clutch memher and the shaft 128 to which it is keyed these parts continue to revolve under their inertia and unless provision were made to the contrary would come to rest at different .of the machine and its other end is connected at 213 to an arm' 214 mounted upona rotary bolt 177, (see'Figs. 5, 6 and 7,) which has been heretofore referred to as the pivot of the latch 176 and upon which the latter is loosely mounted, The arm 214 is normally substantially horizontal and the bolt 177 carries-a second arm 215 which is rigid therewith and depends through an opening 216 in the cross plate 217 forming a part of the framework of the machine. A push rod 218 is pivoted to said arm at 219 and is guided in an opening 220 in web 221 depending from said cross plate, and extends into the path of a depending portion 222' of the bell crank lever arm. It follows from this construction that when the bell crank lever is shifted by the cam 208 engaging the roller 209 thereon, the push rod 218 is also shifted and in a direction tolower thev horizontal arm 214 and so bring the friction strap 211 into engagement with the disk 154 to stop the-rotation of the shaft 128. Thus the shaft-is not permitted to revolve under its inertia until the friction of the bearlngs brings it to-rest but it is quickly stopped 'bythe brake just described. Obviously,

however, this mechanism is not sufficient to lnsure the shaft comlng to rest in the same identical position each time though may be depended on to stop said shaft within a we provide additional mechanism for feeding it forward to such point. For this purpose the driving member of the clutch 162 .carries'a gear 223 which is bolted tothe outer face thereof at 224 and engages a pinion 225, the shaft 226 of which is journaled in the bracket 227 carried by the plate 21.7

above mentioned. The other end of the shaft 226 carries a pin or stud 228 (see Figs. 4, 5

choosing the eccentricity of the stud 228 the extent of this oscillation can be determined. A awl 233 is pivoted at 234 upon said arm and engages a ratchet wheel 235 which is rigidly mounted upon the shaft 128. The teeth 236 upon said ratchet do not however extend entlrely around the periphery thereof as is usually the case in ratchet wheels but only for a very limited a'rc' thereof which corresponds to or includes the entire are within which the shaft may be stopped by the brake band above described. It will now be seen thatwhen the clutch is unshipped and the shaft 128 left free it will be brought to rest. or substantially so by the brake band above described or at least its inertia will be overcome thereby when the toothed portion of the ratchet is opposite said pawl. But though its tendency is to stop within the are above described the pawl 233. operated by the connections just described acting on the ratchet teeth feeds the shaft around against the frictional resistance of the brake strap until the end of the series of teeth is reached when the pawl will simply oscillate back and forth without further movement of the shaft. Any suitable spring may be employed in connection with the pawl and we have shown an ordinary spring 237 secured to the arm and bearing upon the pawl.

In order that the engagement between the driven and driving parts of the clutch may be positive and yet the lost motion n 45 the same be reduced'to a minimum'we employ a clutch of the following description: The driven member 17 0 thereof is provided upon its engaging face with a toothed annulus 239 secured in a rabbet 240 by screws 241 (see Fig. 5). The driving clutch member 162 is provided with aseries of toothed sections 242 upon its engaging face, the teeth whereof are adapted to engage the teeth upon the driven section of the clutch.

cavities 245-246 in the toothed sections- Each of these toothed sections is mounted adjacent toothed sections'which are correspondingly rabbeted for this purpose. The teeth upon each such section correspond identically'in size and distance between the edges'thereof with the teeth upon the opposed annulus and diagonally opposite toothed sections are so formed and placed that when one of them is in driving engagement with the teeth of the annulus or in other words with the radial faces of its teeth in engagement with the'radial faces of the teeth of the annulus, the other section of the pair is similarly engaged. Obviously, the toothedsections might be so arranged that all the teeth thereon throughout the periphery of the driving member of the clutch would be simultaneously in engagement with the teeth of the driven clutch member. In that event, however, whenever the engaging faces were brought together unless it chanced that the axial faces of the teeth were in position to engage each other there would be a certain lost motion before the-engagement took place whlch might amount to the full width or arcuate dimension of a tooth. Obviously, though by the mechanism previously described the shaft were stopped at each operation in identically the same position, such lost motion between the members of the clutch would result in unequal lengths of board being cut. In order to reduce the lost motion in the clutch to a minimum the 1 toothed sections are arranged in pairs, the members of each pair being diametrically opposite each other and the teeth of each pair being arranged to simultaneously enage the teeth upon the driven annulus; but the teeth upon each successive pair of sections are sllghtly advanced ,or set back as the case may be with reference to the preceding palr of sections so that when the teeth of one pair of sections are in driving engagement the other pairs will be spaced'apart to the extent of a fraction of the length of a tooth. In other words, the space between the last tooth of one section and the first tooth of the succeeding section is not a mul- 12 tiple of the length of a single tooth but a fraction thereof. Preferably the advance or set back between successive pair of sections is such as to equally divide the arcuate length" of the toothbetween the several 1'26 palrs of sections, on the clutch member.

Thus, if, as in the example shown in Fig. 8,. there arefour pairs of toothed sections, each successive sectionis advanced or set back with relation to the preceding pair of sections a distance equal to one-quarter of a tooth. It follows that the lost motion bedepth for this reason.

' springs heretofore described. are provided to chine which has previously been set by the the latch 176. The latter then releases the permit the sections which are not in the driving position to retreatsufliciently to allow the driving sections full penetration. v

The continuous strip of board as formed is fed by the l'a'g'ging to the shearing mahand-wheel 200 heretofore described to cause operations of the movable shear blade at suitable intervals to'give the desired length of board. The latter moves continuously through the shears and between the blades thereof until the control disk 183 releases bell crank 171 permitting the clutch to be shipped by the spring 175. By reason of the construction-heretofore described the members of the clutch engage positively and Y without material lost 'motlon whereupon the shaft 128 is revolved and the cams thereon cause the movable blade of the shears to. be reciprocated to'sever the board and to feed the shearing means forward along with .the board pare: passu so that the sheet of material is not buckled. Any suitable provision may be made for carrying awayand stacking the product of this a paratus,

The power or drive shaft 11? is provided with a clutch 252 of any usualor approved design, which latter may be 0 eratedqby a rod 253 which in turn'is contro led'by a bell crank 254 and a hand-rod 255 extending to the front of the machine.

It will be seen that the above described cutting device, by reason of its shearaction severs the cardboard without crushing the same, and because the shears moves along with the corrugated board, and at. the same speed, there is no buckling of the' latter which would result in injury thereto. By

" means of the adjustable friction driving connection for the shears the machineimay be set to cut any length .of board desired.

We claim: 1. In a machine of the class described,-

continuously operating strip-feeding means,

for driving the strip-feeding means and shears, connections between the power means and shears comprising a normally open clutch, means for closing the clutch; tri means for normally maintaining the clutc open and permitting it to be closed at predetermlned intervals and a rotary disk adjustably driven from the strip feeding means controlling said trip.

2. In a machine of the class described, continuously operating strip-feeding means, a means for severing the material as it is formed into uniform lengths, power means for driving the strip-feeding means and shears, connections between the power means and shears comprising a normally open clutch, means for closing the clutch, timing means constantly driven by the power means, and a latch controlled thereby for normally maintaining the clutch open but periodically permitting it to close.

3. In a machine of theclass described, continuously operating means forfeeding a continuous strip of material, means for severing the strip into predetermined lengths} comprising a shears, driving means com 'mon to the strip-feeding means and the shears, connections etween the driving means and the shears comprising a normally open clutch, a clutch shifter, a'timing mechanism driven from the driving means,

and alatch controlled by said timin means to normally oppose the clutch shi ter but permit it'to operate at predetermined intervals.

4. In a machine of the class described, continuously operating means for feeding a continuous strip of material, means for severing the strip into predetermined lengths comprisin a shears, driving means common to the strip-feeding means and the shears,

connections between the driving means and the shears comprising a normally open clutch, a clutch shifter, a timing mechanism driven from the drivin means,'"i'n'eans for adjusting the speed 0 the timing mechanism', and a latch controlled by said timing means to normally oppose the clutch shifter but permit it to operate at predetermined 7 intervals.

5'.v In a machine of the class described, continuously operating means for feeding a continuous strip of material, means for severing the strip into predetermined lengths comprising a' shears, driving means common to the strip-feeding means and shears, connections from the driving means to the shears comprising a normally open clutch, a clutch shifter a latch normally maintaining the clutch 1n open position, and a controller disk driven from the. driving means and normally maintaining the latch in operative position [but designed to release the same at regular "intervals.

6. In amachine of the class described, continuously operating means for feeding a continuous strip of material, means for severing the strip into predetermined lengths comprising a shears, driving means common to the strip-feeding means and shears,

connections from the driving means to the shears comprisinga normally open clutch, a clutch shifter, a latch normally maintain ing the clutch in open position, and a controller disk driven from the driving means and bearing upon the latch to normally maintain it in operative position but notched to permitthe latch to move .to inoperative position at predetermined intervals.

7. In a machine of "the class described,

continuously operating means for feeding a continuous strip of material, means for severing the strip into predetermined lengths comprising a shears, driving means common to the strip-feeding means and shears, connections from the driving means to the shears comprising a normally open clutch,

means for closing the clutch, a latch nor-.

mally retaining the clutch in open position, a controller disk continuously driven from the driving means, and operating connections between said disk and driving means 1 comprising means for varying the relative speed of the drivingmeans and disk.

8. In a machine of the class described,

continuously operating means for feeding v a' continuous strip of material, means for ter being adjustable toward and from the center of the friction disk, and means for adjusting the roller.

9. In a machine of the class described, continuously operating meansfor feeding a continuous strip of material, means for severing the strip into predetermined lengths comprising a shears, driving means common to the strip-feeding means and shears, connections from the driving means to the shears comprising a normally .0 en clutch, means for shifting the clutch to c osed position, a latch normally maintaining the clutch in open position, a controller disk normally maintaining the latch in operative position but permitting it to retreat there from at regular intervals, means for driving the controller from the driving means, comprising a friction disk, a shaft parallel to the plane of the friction disk and geared to the driving means, a friction roller keyed to the shaft and adjustable toward and from the center of the disk, and means to adjust said roller.-

10. In a machine of the class described,

continuously operating means for feeding a continuous strip of material, means for severing the strip into predetermined lengths comprising a shears, driving means common to the strip-feeding means and shears, connections from the driving means to the shears comprising a normally open clutch, means for shiftingthe clutch to closed position, a; latch normally maintaining the "clutch in open position, a controller disk normally maintaining the latch in operative position but permitting it to retreat therefrom at regular intervals, means for driving the controller from the driving means, comprising a friction disk, a shaft parallel to .the' plane of the friction diskand geared to the driving means, a friction roller keyed to the shaft and adjustable toward and from the center of the disk, means' to adjust said roller consisting. of a rack parallel to said shaft and adjustable longitudinally thereof and connected to the roller, and a hand-wheel having a gear meshing with the rack. I

11. In a machine of the class described, continuously operating means for feeding a continuous strip of material, means for severing the strip into predetermined lengths comprising a shears, driving means common to the strip-feeding means and shears, connections from the driving means .to the shearscomprising a normally open clutch,

means for shifting the clutch to closed position, a latch normally maintaining the clutch in open position, a controller disk normally maintaining the latch in operative position but permitting it to retreat therefrom at regular intervals, means for driving the controller from the driving means, comprising a friction disk, a shaft parallel to the plane of the friction disk and geared to the driving means, a friction roller keyed to the shaft and adjustable toward and from the center of the disk, means to adjust said roller consisting of a rack parallel to said shaft and adjustable longitudinally thereof and connected to the roller, a hand wheel having a gear meshing with the rack, a dial, and a pointer for indicating the adjustment of the rack.

12. In a machine of the class described and in combination with means for continuously feeding a continuous strip of material, shears for severing the material into predetermined lengths, comprising a transverse shaft, an oscillatory frame mounted on the shaft, a stationary and a reciprocating knife mounted on the frame, a pair of dam disks mounted on and driven by theshaft for reciprocating the movable shear blade and a cam disk also mounted upon and driven by said shaft,.and connections therefrom for oscillating the frame.

13. In a machine of the class described and in combination with means for continuously feeding a continuous strip, an oscillating shears comprising a frame mounted for oscillation in the direction of movement of the strip, a stationary and a reciprocating knife mounted thereon, means for reciprocating the lmife comprising a shaft, cams mounted on the shaft, and links connecting the movable knife blade and cams, a cam for oscillating the frame, and a lever driven by said cam and connected to the frame.

14. In a machine of the class described, and-in combination with means for continuously feeding a continuous strip of material, a movable shears normally inoperative, continuously operating driving means, means for connecting the shears at intervals to the driving means, comprising a clutch, a shaft 'upon which the clutch is mounted and which is connected to the shears for operating the same, said clutch comprising a driving and a driven member, the latter adjustable longitudinally of -the shaft, spring means for pressing the driven member of the clutch into operative connection with the driving member, a lever for controlling the shiftable member of such clutch connected thereto, a

' latch for normally maintaining the lever in a position with the clutch open, a controller normally maintaining the latch in a position to hold the clutch open but, shaped to permit the clutch. to close at intervals, and connections for driving the controller from the driving means.

15. In a machine of the class described, and in combination with means for continuously feedinga continuous strip of material, a movable shears normally inoperative, continuously operating driving means means for connecting the shears at intervals to the driving means, comprising a clutch, a shaft upon which the'clutch is mounted and which is connected to the shears for operating the same, said clutch comprising a driving and a driven member, the latter adjustable lon itudinally of the shaft, spring means or pressing the driven member of the clutch into operative connection with the driving member, a bell, crank lever connected to the shift- -able member of the clutch, a latch normally restraining the lever to hold the 'shiftable clutch member in open position, a controller continuously driven from the driving mechanism no'rmally maintaining the latch in open position, releasing it at intervals, and a cam mounted upon the shaft and engaging the lever for restoring the latter and the clutch to open position. I

16. In a machine of the class descrlbed, means for continuously feeding a continuous strip of material, a shears for severing the strip into sections of equal length, driving means, a connection between the shears and the driving means comprising a normally open clutch having a driving member and a driven member, the latter of which is movable toward and from the driving member, means for shifting the driven member into and out of engagement with the driving member, and means for giving the driven member of the'clutch a supplemental movement, after each operation of the shears to bring it accurately to the proper position for the next operation.

17. In a machine of the class described, means for continuously feeding a continuous strip of material, a shears for severing the strip into sections of equal length, driving means, a connection between the shears and the driving means comprising a normally open clutch having a driving member and a driven member, the latter of Which is movable toward and from the driving member, means for shifting the driven member into and out of engagement with the driving member, pawl and ratchet means for accurately positioning the driven member of the clutch after each operation of the shears.

18; In a machine of the class described, means for continuousl feeding a continuous strip ofmateriaL-a s ears for severing the strip into sections of equal length, driving means, a connection between the shears and the driving meanscomprising a normally open clutch having a driven member and a drivin member, the former of which is movab e toward and from the driving member, means for shifting the driven member into and out of engagement with the driving member, means for accurately positioning the driven member of the'clutch after each operation of the shears, comprising a frict1on brake, and means for-operating the same when the clutch is thrown into open position.

19. In a machine of the class described, means-for continuously feeding a continuous strip of material, a shears for severing the strip into sections of equal length, driving means, a connection between the shears and the driving means comprising a normally open clutch having a driving member and a driven member, the latter of which is movable toward and from the driving member, means for shifting the driven member into and out of engagement with the driving member, means for accurately positioning the shiftable member of the clutch after each operation of the shears comprising a friction drum connected thereto, a band cooperating with the drum, and means for simultaneously Withdrawing the shiftable member of the clutch for engagement with the driving member, and applying the band to the drum.

20. In a machine of the class described, and in combination with the means for continuously feeding a continuous strip of material, means for shearing said strip at predetermined intcrvals. comprising a shears, continuously operated driving means, means for intermittently connecting the driving means to the shears comprising a shaft connected to the shears for operating the same, a clutch mounted, on the shaft comprising a driving and a driven member, the latter adjustable longitudinally of the shaft, a spring tending to force thedriven member of the clutch into contact with the drivingmember, a lever normally maintainingthedriven member out of contact with the driving member, a latch for normally maintaining the lever with the clutch in openposition, a controller for normally maintaining the latch in operative position but permitting it periodically to retreat therefrom, a

cam on the shaft adapted to engage the lever to restore it to open position, against the pressure of the spring, a 1 brake drum mounted on the shaft, a brake band engage ing the drum, and means operated by the cam which operates the lever for at the same time operating the brake band to cause it to engage the disk.

' 21. In a machine of the class described,

driving and a driven member, the latter adjustable longitudinally of the shaft, a spring tending to force the driven member of the clutch into contact with the driving mem-' ber, a lever normally maintaining the driven member out of contact with the driving member, a latch for normally maintaining the lever with the clutch in open position, a controller for normally maintaining the I latch in operative position but permitting it periodically to retreat therefrom, a cam on the shaft adapted to engagethe lever to re store it to open position againstthe pressure of the spring, a brake drum mounted on the shaft, a brake band engaging the drum, a

rotary bolt having an arm attached to the brake band, a second arm, a reciprocating bolt connected to said second arm and extending into the path of the lever whereby operation of the lever in opening theclutch will operate the brake band to cause it to enterial, a shears for severing the material into gage the drum. a

22. In a machine of the class described and in combination with means for continuously feeding a continuous strip of mapredetermined lengths, means for operating the shears comprising a continuously driven shaft and connections therefrom to the shears, comprising a rotary shaft, a clutch mounted thereon consisting of a driving member and a driven member movable upon the shaft toward and from the driving member, means for causing the driven mem-f;

her to engage the driving member at pre-' determined intervals and to be released therefrom, means for restoring the shaft and driven member of the clutch toa:

definite postion comprising a ratchet wheel mounted on the shaft and having a discontinuous series of teeth, a ratchet forratchet, and means operated from the driving member of the clutch for continuously operating said pawl.

engaging such teeth, a pawl engaging the 23. In amachine of thclass described,

means for continuously feeding a continuous strip of mat r1al,.a shears for severing the.

strip into R edetermined equal lengths, a driving meahs, a connection between the driving means comprising a shaft, a clutch mounted on lthe shaft consisting of a driving and a dr'rtten member, the latter adjustable toward and from the driving member,

means for arresting theshaft and driven member when released from the driving member within a definite arc, and means for restoring the shaft and driven clutch member to a predetermined position when released from the drivi clutch member.

24. In a machine 0 the class described, means for continuously feeding a continuous strip of material, a shears for severing the strip. into predetermined equal lengths, a

driving means, a connection between the driving means comprising a shaft, a clutch mounted on the shaft consisting of a driving and a driven member, the latter adjustable toward and from the driving member, means for arresting the shaft and driven member when released from the driving member within a definite are, means for restoring the shaft and driven clutch memher to a predetermined position when released from the driving 'clutch 'member, com rising a discontinuous ratchet on the she and a pawl driven by the driving member of the clutch cooperating with the ratchet.

25. In a machine .of the class described,

and in combination with a continuously v operating means for feeding a continuous strip of material, a shears for severing the strip of material, a driving means for the shears, normally inoperative connections between the driving means and shears comprising a shaft, a clutchamounted on the shaft consistm of a driving and driven member,

a brake or arresting the movement of the driven imember and shaft when released from the driving member, a ratchet disk having a discontinuous series of teeth. on the periphery-thereof, a pawl engaging said teeth to feed the shaft. to a predete position, a gear mounted'on the d" member of the clutch, a piniondriveii y said gear and mounted upon a shaft, a

pivoted pawl arm, connections from the last said shaft for driving the pawl arm, and a pawl carried by the pawl arm engaging the ratchet disk.

26. In a machine of the class described, a shears for severing the product into desired lengths, power means for operating the shears, a clutch intermediate said power means and shears and comprising a driving and a driven member, means for stopping the driven member after it is freed from the driving member short of a predetermined position and supplemental means for slowly feeding the driven clutch member forward 15 into said predetermined position.

'MELVAN L. TWOMLEY.

GEORGE S. WRIGHT. Witnesses:

F. E. NEAL, F. V. POWELL.