US1996306A

US1996306A - Measuring and cutting machine

Info

Publication number: US1996306A
Application number: US676915A
Authority: US
Inventors: Harry S Rubens
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-06-21
Filing date: 1933-06-21
Publication date: 1935-04-02
Anticipated expiration: 1952-04-02

Description

April 2, 1935. H. s. RUBENS MEASURING AND CUTTING MACHINE Filed June 21, 1935 4 Sheets-$heet 1 April 1935. H. s. RUBENS MEASURING AND CUTTING MACHINE 4 Sheets-Sheet 2 Filed June 21, 1953 F 5W ym kwwmw April 2, 1935. H. s. RUBENS MEASURING AND CUTTING MACHINE Filed Jun 21, 1933 4 Sheets-Sheet 3 fave/27%":

' A ril 2, 1935. H. SQRUBENVSLJY MEASURING AND CUTTING, HACHINE I Filed June 21, 1953 "'4 Sheets-Sheet 4 Patented Apr. 2, 1935 umrso .sTA'rss PATENT OFFICE,

MEASURING AND CUTTING MACHINE Harry S. Rubens, Chicago, Ill. Application June 21, 1933, Serial No; 676,915

18 Claims. (01.164-42') This invention relates toa measuring and cutting machine and more particularly to a machine for measuring and cutting a continuous web of material into strips or sheets of equal length.

While the invention is especially suitable for measuring and cutting into sheets of equal size a continuous web of cellulose wrapping material such as Cellophane wound upon a rolland drawn therefrom and fed through the machine by feed mechanism which operates to feed the web intermittently or step by step and in equal lengths, it is to be understood that the invention may be employed with paper or other materials as suitable or desired.

In the specific embodiments selected for illustration', the invention has certain advantages not found in machines of theprior art, first of which is its ability to handle very thin and fiexible'celluloseand like materials which have advantages well known in the art and have come. into wide use for wrapping purposesand the like. The machine which I provide is compact and inexpensive and operates positively and effectively. It is light in weight and easy to manufacture and assemble, and the parts are all such: as to be formed at minimumcost, simple'operations on relatively few and small parts only being required. The feed rolls of the mechanism for drawing the materialfrom the rolland. feeding itthrough the machine are both preferably positively driven, and the means for operating the feed mechanism has stop means for limiting positively the feed mechanism actuating operation, and preferably also the resetting movement of the feed mechanism-operating. means. The stop means for limiting the feed mechanism actuating operation is preferably adjustable for the purpose of adjusting the lengths of the strips of sheets measured and cut by the machina and the stop means for limiting the'resetting movement of the feed mechanism operating means may be and, in the illustrated embodiments, .is adjustable to assure proper positioning of the feed mechanism operating means in the resetting movement thereof.

I further wish to call attention to the fact that the mounting and replacement of .the 'rolls of material which are measured and cut by the machine are obtained with ease and facility; that at least one of the feed rolls is preferably held yielldingly in cooperating with the other feed roll by means which assumes proper feeding cooperation of the surfaces of these rolls at all times; and that provision is made for holding and guiding the swingable arm, I 1

'ceive the opposite ends of the shaft or trunnions Another feature which is of importance 'in'my invention residesin the provision. of guide means for guiding the material from the feed mechanism, whichguide means is adjustable for sheets of diiferentwidths.

Another feature is the provision of means for preventing back-lash in the feed mechanism Another feature is the provisionof means for yieldingly preventing over-running or turning of the roll of material too freely on itsrotatable support. g c

Further features and advantages will be apparent from the following detailed description taken in connection with the accompanying drawings, in which: i

- Figure 1 is a fragmentary side view of a machine embodying the present invention; Figure 2 is a fragmentary top plan view;

Figure 3 is a fragmentary vertical section taken on the line 3-3 of Figure 2; I

Figure 4 is a fragmentary detail view showing a modified form of means for holding the periph-. erally toothed feed mechanism operatingiwheel' against back-lash;

Figure 5 is a fragmentary side view of the another embodiment of the invention; and

Figure 6 is a fragmentary perspective view showinga brake device for preventing back-lash in the feed mechanism. i V e Referring to the drawings, the machine shown comprises a bench,.table, or other member, having a hat. horizontal top 5. Secured fast at 6 tothe top 5 are a pair of uprightsor frame members I, theupper ends of which are notched at 8 to re- 9 of the roll of material I0. i g c The material In is preferably a thin flexible web of cellulose material, such as Cellophane wound upon theroll, but itis to be understood that any other suitable or preferred material, such as paper or the like, may be employed within the scope of the present invention.- The instant machine is especially suitable for measuring and cutting sheets of wrapping material for use with the wrapping method covered by my copending application Serial No; 676,420, filed June 19, 1933. It is not, however, in anywise limited to such use, but may be employed wherever it is desired to measure and cut a continuousweb of material into strips or sheets of equal lengths.

Mounted in one of the uprights l beneath the trunnions Q and with its axis in a vertical plane through the axis of the trunnions 9 is a short shaft i2 which, in the embodiment of Figures 1 to 3 inclusive, is'fixed against rotation in the adjacent upright and projects outwardly therefrom. A relatively large spur gear or other peripherally toothed wheel 43 is mounted upon the shaft l2 for rotation freely upon the shaft [2 in a clockwise direction, and preferably is held at all times against back-lash or turning movement in a counterclockwise direction (Figure 1) by an over-running clutch indicated at M.

Other suitable or preferred means may, of course, be provided for holding the spur gear or peripherally toothed wheel against back-lash or rotation in a counterclockwise direction in lieu of the over-running clutch M. For example, in the modification shown fragmentarily in Figure 4, the relatively large spur gear or peripherally toothed wheel indicated at 13 and which corresponds with the gear or wheel E3 of Figures 1 to 3 inclusive, is held against back-lash or rotation in a counterclockwise direction by a locking dog It pivoted at H upon the adjacent upright 1' which, in this case, isextended above the periphery of the wheel or' gear l3. The wheel 13, in this embodiment, is either rotatable loosely upon the short shaft ['2' which is then fixed against rotation in the adiacent upright, or it may be fixed upon the shaft l2, in which case this shaft 12 is rotatable freely in a suitable bearing on the upright. The nose of the dog it is pressed yieldingly at all times into engagement with the teeth in the periphery of the wheel or gear 13' by a spring [8 and operates to permit turning of the wheel in a clockwise direction and at the same time to hold the same against back-lash or turning in a counterclockwise direction.

Now, referring again to Figures 1 to 3 inclusive, an arm 20 is mounted substantially intermediate its length upon the shaft l7. to swing freely in clockwise and counterclockwise directions. To turn the gear or wheel lit in a clockwise direction by clockwise swinging movement of the arm 20 about the shaft 2, an actuating dog 2! is pivoted to the arm 20 at 22. The nose of the dog 2! is pressed yieldingly at all times into engagement with the teeth in the periphery of the wheel or gear I3 by a spring 23 connected at one end to the arm 20 at 2 and at the opposite end to the tail of the dog 2| at 25. The dog 2! operates to turn the wheel [3 positively in a clockwise direction with clockwise swinging movement of the arm 20, and at the same time yieldingly over-runs the teeth of the wheel [3 in the opposite direction to permit return or resetting movement of the arm 23 free of the wheel 13 and without turning the same in a counterclockwise direction.

The mechanism for drawing the web 28 of material from the roll in and feeding it through the machine comprises a pair of feed rolls 29 and 3B. These rolls are preferably of hollow cylindrical or drumlike form as shown in Figure 3, and their cylindrical outer surfaces are preferably surfaced or covered with rubber or like material at 3! and32 respectively. The roll 29 has fixed thereto at its opposite ends trunnions 34 positioned beneath the wheel l3 and mounted or journaled rotatably in theopposite uprights 'i with their axes in the vertical plane of the axes of the roll l0 and wheel I3. The trunnion 34 at the side of the machine at which the wheel i3 is disposed projects outwardly from the adjacent upright 1 and has fixed thereon a pinion 35 which meshes constantly with the teeth in the periphery of the gear wheel l3. The trunnions 36 fixed to the lower roll 39 are loosely journaled at 31' in the upright 1, the journalling openings provided for the trunnions 36 in the upright i being elongated slightly as shown in Figure l to permit the roll 30 to yield slightly with respect to the roll 29 for assuring proper feeding cooperation of the surfaces of these rolls at all times. The roll 30 is pressed yieldingly against the roll 29 by coiled springs 39 confined in sockets 40 in enlargements on the webs 4| integral with the uprights 1 and between screws 42 and stud-like projections 43 integral with the trunnions 36, and which operate slidingly in the sockets 4G. Threading of the screws 42 into or out of the sockets 40 adjusts the tension of the springs 39, it being understood that there is one of such spring arrangements at each of the opposite ends of the roll 30 although only one such arrangement is shown in the drawmgs.

The

trunnions

34 and 36 at the side of the machine opposite the side at which the wheel I3 is disposed project outwardly from the adjacent uprights 7 and have fixed thereon meshing

spur gears

45 and 46, which gears are of equal diameter and drive the roll 30 positively in a clockwise direction by turning movement of the roll 29 in a counterclockwise direction and at a onethe vertical leg 53 of this connecting web. The

under side of the inner end of the plate is tapered at 54 to fit well between the

rolls

29 and 30, and the legs 48 may be webbed at 55, the web 55 on the leg 48 at the side at which the wheel 13 is disposed having 'an opening 5% in the plane of swinging movement of the arm 20.

The right-hand end of the arm 20 (Figure. 1) is depressed or actuated by a treadle 60. The treadle 6B is hinged or pivoted at 6|, as for example, upon a bracket on the floor, to swing vertically, and its opposite end is connected by a chain 62 and rod 63, or other suitable connecting elements, to the arm 20. The lower end of the element 62 is connected at 64 to the free end of the treadle B8, and the upper end of the element 62 is connected to the lower end of the rod 63 at 65. The rod 63 is reciprocable vertically through an opening 68 in the top 5 and through the opening 56 in the web 55 of the adjacent frame or upright I, and the upper end of the rod 63 has an eye 69 by means of which and a thumb nut the upper end of the rod is pivoted to the adjacent end of the arm 20. Longitudinally aligned openings 72 in the arm 255 permit the upper end of the rod 63 to be pivotally connected to the arm at different positions inwardly and outwardly from 1e axis of swinging movement of the arm, or, in other words, these openings (2 permit adjustment of the pivotal connection between the arm 20 and the rod 63. Slidable upon the rod 63 above the lateral extensions 15 of the web 55 is a collar 76, which collar 16 is adapted to be secured fixedly indifferent positions upon the rod 83 by a set screw 11. The collar 16 constitutes an adjustable stop which, by engagement with the pro- 2 The plate 58 is the collar 16 to different positions upon'the' rod '53 andagain tightening the screw 11'when the collar '16 is positioned as desired, the "amount ofdownward swingingmovement of the arm 20 upon each depression of the treadle B is adjusted. This adjusts the amount of rotation or turning movement imparted to the gear I3, and thereby the amount of turning movement imparted to the feed rolls 29 and'30 upon eachactuation or" the treadle 60. The amount ofturning movement imparted to the feed rolls 29 and 30, inturn, determines the length of web fed through the machine upon 'eachoperation ofthetreadle and thereby the length of the sheets'or strips measured and cut by the machine.

At the opposite end of the arm is a return or resetting mechanism therefor. This mechanism comp-rises a rod 80 vertically reciprocable through an opening BI in the top 5 and provided at the upper end with an eye 02 pivoted to the arm 20 by means of 'athumb screw or the like 83. A; plurality of longitudinally aligned openings 84 in the arm 2!! permit adjustment of the pivotal connection of the rod 80*to' the arm 20 inwardly and outwardly from the axis of swinging movement of the arm. At the bottom of the opening 8| is an upwardly cupped or concave ring-like guide plate 85 through the opening in which the rod 80 passes.

Mounted upon the rod 00beneath the plate 85 for vertical sliding movement of the rod 80 there'- through is a collar 86, the top of which is rounded in conformity with the concave portion of the plate 05, and a spring 88 is coiled about the lower end of the rod 8t and confined between the bottom of the collar 80 and a collar 81 secured fast upon the lower end of the rod 80. As the treadle 60 the rod 86 up vertically through the opening BI.

This upward movement of the rod 80 is against :the tension of thespring 83 which is compressed thereby so that, after the feeding operation is completed and'the treadle 60 released, theexpansive effort of the spring 88 against the collar 81 'will force the rod 80 downwardly and, through it,

resetor return the arm 20 to position for the.

next feeding operationof the machine. As the spring '88 operates to reset or return the arm 20 to position for the succeeding operation "the'dog 2| "rides freely over the peripheral teeth in the gear or wheel l3 and without turning this gear with this movement of the arm.

For the purpose of guiding the web 28 over the flat upper surface of the plate 50 as it is fed from the machine, the plate 50 is provided with a pair of side guides 5N3 and SI spaced apart a distance substantially equal to the width ofth e web 28 and cooperating with the opposite edges of the web as shown in Figure 2 to guide the same from the machine. The. guides 90 and 0! have entrance projections curved or spread outwardly at 92 and 93 to receive the web and guide thesame between the parallel guide edges of the guides.

To permit adjustment of the space between the guides 90 and 9! for accommodating sheets or webs of difilerent widths, the guide'90 is adjustably mounted upon the plate 50 for adjustment toward and away from'the guide 9| which may be secured fast by screws 94. For purposes of this adjustment, the guide" 90 has 'an integral lateral extension 05 provided with a slot 96 disposed at right angles to the width of the web 28, and a screw 91, the shank of which passes through the slot as, is adaptedfor'securing the guide fast in: any desired adjusted position. Topr'eventturning of-the'guide' at about the shank of the screw 91, thefouter end of theextension '95 engages and is guided'in a-notch 98in the web 99 of thelateral legpart 48 of the adjacent frame part or upright 1 or,ii1 lieu of this, a second screw (not shown) may be arranged outwardly of the screw 91 with its shank passing through the slot '06 and threaded into the adjacent frame or upright part or" the machine.

' The cutting mechanism, designated, i its uponthe "shank of the-bolt or-screw I03 ahead of the nut I05, and a spring I08 'is coiled about the shank of the screw or bolt and disposed between the washer I01 and the lateral frame extension E04. The knife I02'has a handle IIO and acut ting edge H2 which cooperates with the cutting 'edge'of-the bar N10. The part of the knife I02 along which the cutting edge H2 is formed say be normally disposed slightly obliquely'with reference to the cutting edge of the bar 100, and as the blade or knife I 02 is depressed the spring mounting at I 08 permits the blade to swing laterally slightly into parallelcooperation with the cutting edge of the bar I00 as the blade is swung downwardly into engagement with this bar. This assures proper cutting cooperation of the knife I02fwith the bar I30 atiall times, but the knife I02 may be of straight forinf and the cutting mechanism'=-may be otherwise varied within the scope of the presentinvention. I The knife I02, in theillustrated embodiment, is operated manually by grasping the handle I I0 and swinging the same downwardly into cooperation with the cutting edge of the bar I00, but it is to be understood that this knife may be operated automatically from the foot treadle G0 or other feed mecha The axis nism operating means of 'the machine. of the roll 30 is'in" a vertical plane through the axes of the roll 29, toothed wheel I3, and the roll of materialIIJ. i

To prevent over-running or too free turning of the roll of material ID on its rotatable support, one end of the journal for the roll has fixed thereona collar or other suitable abutment I15. A spring arm I16, secured fast at its lower endto a' shaft I11, has an enlargement.l18 at its'upper end bearing against the adjacent end of the roll I Il' and specifically against the hub or roll part proper; This spring I16 forces the collar I15, at'the opposite end of the. roll, yieldingly against the adjacent upright 1, and holds the, roll of material' yieldingly against over-running or too free turningon its rotatable support. The shaft 111, which anchors the lower end of the spring arm I16, is slidable in "a sleeved part I10 so that the.

spring arm maybe moved toward and away from the upright at the opposite 'side of the machine to accommodate rolls of different lengths, and is secured fast in adjusted position by a set screw I80.-

The operation of the illustrated embodiment in roll form at I0, and the free end of the sheet or web 28 is led down and out between the feed rolls 29 and 30 over the plate 50 and between the guides 90 and 9|. With the free end of the web positioned between the

rolls

29 and 30, operation of the foot treadle 60 turns these rolls an amount determined by the position of the stop 16 to draw a predetermined length of web from the roll I and feed the same out between the guides 90 and 9|. After depression of the treadle 60, the knife I02 is swung downwardly from its raised position shown in Figure l to cut the web 28 transversely across its width and thereby divide the sheet 19 therefrom. The depressions of the treadle 60 will feed equal lengths of the web 28 from the machine, and by operating the knife I02 after each web feeding actuation of the treadle 60 the web is cut into sheets or strips 19 of equal length. The operation of the web feeding means is intermittent and the cutter is operated after each operation of such web feeding means. As already pointed out, adjustment of the stop 16 on the rod 63 adjusts the length of the strips or sheets.

I For the purpose of limiting positively the resetting movement or repositioning of the arm 20 after each actuation of the treadle 60, the rod 63 is provided with a second stop I20 adjustable thereon and fixed fast in such position by a set screw I2I. The stop I20 operates beneath the lateral extension 15 of the adjacent upright and, by engagement with said lateral extension, limits the upward stroke ofthe rod 63 and thereby the resetting movement of the swingable arm 20. This stop assures proper positioning of the feed mechanism operating means in the resetting movement and the adjustability of this stop enables maintaining proper resetting positioning of the arm 20 so that this arm and the web feeding mechanism will operate properly upon each actuation of the treadle 60. r

In the embodiment of Figure 5, theperipherally toothed wheel or gear member I25 corresponds with the peripherally toothed wheel or gear member I3 of Figure 1, and the arm I26, swingable about the axis of the shaft I21, corresponds with the arm 20 of Figure 1. In this embodiment, the arm I 26, instead of having one feed mechanism actuating dog, has two such dogs I28, I29 pivoted at I30, I3I on opposite sides of the axis of swinging movement of the arm and having their noses pressed yieldingly into engagement with the teeth in the periphery of the wheel I 25 by springs I32, I33. The roll of material is indicated at I34, the upper and lower feed rolls at I35 and I36 respectively, and the means for actuating the arm I26 is shown as comprising the vertically reciprocable rod I31, treadle I38, and connecting element I39. The top is indicated at I40 and the cutting mechanism is shown as comprising the fixed cutting bar MI and swingable knife I42.

In this embodiment, the adjustable stop members I43 and I44 on the rod I31,for limiting the feed mechanism advancing movement and the return movement respectively of the arm I26, instead of cooperating with a lateral extension of a web part on one of the upright frame members of the machine, cooperates with a fixed stop indicated at I45. This stop I45 comprises a relatively short shaft or post secured fast at its inner end to the adjacent upright I46 and provided at its outer end with a square part I41, which square part has a transverse opening through which the rod I31 extends.

Instead of the resetting mechanism connected to the opposite end of the arm I26, as in Figure 1, the resetting or repositioning movement of the arm I26 is obtained by a coiled spring I49. This spring I49 is coiled about the shaft or trimnion I21 and has one end engaging the adjacent upright I 46 and the opposite end I50 engaging the arm I26. As the outer end of the arm I26 is swung downwardly by the rod I31 this spring is tensioned, and when the treadle I38 is released it acts to return the arm I26 to position for the next operation, it being understood that in the clockwise swinging movement of the arm I26 the engagement of the dogs I28, I29 with the wheel I 25 advances this wheel with the movement of the arm, and that in the return movement of the arm the dogs I28, I29 ride freely over the toothed periphery of the wheel I25 and permit this return movement of the arm without rotating the wheel. The engagement of the spring I49 with the adjacent upright I46 is indicated at II.

In this case, instead of providing an over-running clutch at I4 or a locking dog at I6 as in Figure 4, brake means is provided at I55 for preventing back-lash in the feed mechanism, and particularly in the peripherally toothed wheel I25 and in the feed rolls I35 and I36. This brake means comprises a pair of thin metal plates I56, I51, which may be of spring metal and which are mounted upon a post I58 secured fast and extending laterally from the adjacent upright I46. At their free ends, the opposing faces of these plates I56, I51 are covered with leather or other suitable friction material at I60, and these friction surfaces are clamped yieldingly by screw and thumb nut means at I6I into braking engagement with the opposite faces of the gear I 62, which gear I62 is mounted coaxial with the upper feed roll I35 and drives the lower feed roll from the upper feed roll but in reverse direction. A coiled spring is interposed between the plate I51 and the wing nut I6 I, and the nut I6I may be threaded upon or from the screw to adjust the braking engagement of the friction surfaces of the plates or shoes I56, I51 with the gear I62. As the wheel I25 is rotated or advanced with the swinging movement of the arm I26, the gear I62 is turned against the braking action of the brake means thus provided, but as the arm I26 is reset by swinging movement in the opposite direction, this brake means prevents back-lash in the gear I25 and connected feed rolls. The pinion for driving the roll I35 from the wheel I25 is indicated at I65.

While I have described certain detailed embodiments of the invention, it is to be understood that the invention is not limited to the details of these embodiments and that all possible equivalents of the details illustrated and described are contemplated within the scope of the appended claims.

I claim:

1. In a machine of the class described, the combination of a frame for rotatably journaling a roll of thin flexible wrapping material at the axis of the roll and independently of the periphery of the roll, a shear device for severing the wrapping material across its width, feed mechanism comprising a pair of feed rolls journaled on said frame and having cooperating surfaces and adapted for drawing definite increments of wrapping material from said first roll and feeding the same between said feed rolls to said shear device, said feed rolls having their axes in a plane intersecting the plane of said material roll, with its axis in the plane in which said feed rolls are mounted and which intersects the axis of said material roll, a wheel rotatably mounted on said frame and adapted for operating said feed rolls, and an arm swingable about the axis of said wheel and coacting with the wheel to turn the same upon swinging movement in one direction and swinging free of said wheel in the opposite direction, said frame extending substantially along the'plane of the axis of said feed rolls, said material roll and said operating wheel, whereby the stresses imposed by said feed rolls,

said material roll and said operating wheel are substantially concentrically imposed upon said m j 2. In a machine of the class described, the combination of a frame for rotatably journaling a roll ;of thinflexible wrapping material at the axis of the roll and independently of the periphery of the roll, a shear device for severing the wrapping material across its width, feed mechanism comprising a pair of feed rolls journaled 'onsaid frame and having cooperating surfaces and adapted for drawing definite increments of material directly from said first roll and feeding the same between said feed rolls to said shear device, said feed rolls having their axes in a plane intersecting the axis of said material roll, with its axis in the plane in which said feed rolls are mounted and which intersects the axis of said material roll, a wheel rotatably mounted on said frame and adapted for operating said posed upon said frame.

3. In amachine of the class described, means for supporting aroll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably mounted and adapted for operating said feed mechanism, aswingable arm coacting with said wheel to turn same upon swinging movement in one direction, said arm swinging free of said wheel in the opposite direction, means pivotally connected to said arm for swinging the same, and means adjustably mounted on said arm swinging means for adjusting the limit to the turning movement imparted to said wheel by said swingable arm. V

4. In a machine of the class described, means for supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably mounted and adapted for operating said feed adjustable on said rod member for limiting swinging movementof the arm and operation of saidfeed means. I

, 5. In a machine ofthexclass'described, means for supporting aroll 'of material, feed mechanism for drawing material from the roll and for supporting a roll of material, a peripherally toothed wheel rotatably mounted, a swingable arm coacting with said wheel to turn same upon swinging movement in. one-direction and :swingfeeding same through the machine, a wheel rotatfeed roll cooperating with said driving feed roll and having. a driven gear meshing with said driving gear to drive said drivenfeed roll from said driving roll and in a reverse direction, a

pinion for said driving roll meshing with said roll from said wheel, and an arm swingable about the axisof the peripherally toothed .wheel having dog means yieldingly coacting with opposite sides of said peripherally toothed wheel for turning said wheel upon swinging movement in one direction and permitting swinging movement of said arm in the opposite direction free of said wheel.

7. In a machine of the class"described, means for supporting a roll of material, a peripherally toothed wheel rotatably mounted, a swingable :arm coactingwith said wheel to turn same upon swinging movement in one direction "and swingiingfree of said wheel in the opposite direction, a drivingfeed roll having a driving gear, a driven feed roll cooperating with said-driving 'feed roll and having a driven gear meshing with said dr'iving gear to drive. said driven reed roll from said driving roll and in "a reverse'direction, a pinion for, said driving roll meshing with said peripherally toothed wheel to drive the drive feed roll from said wheel, a swingablearm having dog means yieldingly coacting with said peripherally toothed wheel for turning said wheel upon swinging movement in onedirection and permitting swinging movement of said arm in the opposite direction free of said wheel, a foot treadle operating mechanism, a reciprocablerod connecting said operating mechanism and said arm, and means on said rodlforlimiting swinging moveing freeof' said wheel in the opposite direction,

a driving feed roll having a driving gear, a driven feed roll'cooperating with said driving feed roll and having a driven gear meshing with said driving gear to drive said driven feed roll from said driving roll and in a reverse direction, a pinion for said driving roll meshing with saidperipherally "toothed wheel to drive the drive feed roll from said wheel, a swingable arm having dog means yieldingly coacting with said peripherally toothed wheel for turning said wheel upon swinging movement in' one direction and permitting swinging I vmovement of said arm in the opposite direction free of said wheel, a reciprocable rod connected to said arm for swinging the same the direction for turning said wheel, a reciprocable rod connected to the opposite end of said arm, and spring means associated with said second rod for resetting said arm by turning movement free of said wheel.

- 9 In a machine of the class described, means for supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably mounted and adapted for operating said feed mechanism, a swingable arm coacting with said :wheel to turn sameupon swinging movement in one direction, said arm swinging free of said wheel in the opposite direction, a part having a generally'horizontal surface over which the sheet is fed from the machine, guide means spaced substantially equal to the width of the material and cooperating with opposite edges of the material toguide the same'over said surface, said guide means comprising a guide member adjustably mounted adjacent one edge of the material upon the part with the generally horizontal surface for adjustment in a direction across the width of a the material, a cutting member at the outer end of said surface, and a knife pivoted at one end andadjacent said guide means swingable into upon cooperation therewith.

cooperation with said cutting member to sever the material transversely across its width.-

3 10, In a machine of the class described, means for supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably versely across its width, and means for mounting said knife pivotally and yieldingly at one end,

said knife being normally disposed slightly obliuuely with respect to said cutting member and moving into parallel relation to said member 11. In combination, a horizontal top, uprights mounted thereon and having'means for journalin'g rotatably a roll of material, a peripherally toothed wheel-rotatably mounted on one of said uprights, a feed roll geared to said wheel, a second feed roll geared to said first feed roll to bedriven in reverse direction thereby, an arm 'swingable on the axis of said peripherally toothed wheel, and means on said arm and yieldingly engaging the teeth in saidwheel for turning said wheel by swinging movement of the arm in one direction and permitting swinging movement of the arm free of the wheel in the opposite direction.

12. In combination, a horizontal top, uprights jmounted thereon and having means for journaling rotatably a roll; of material, a peripherally toothed wheel rotatably mounted on one of said uprights, a feedroll geared to said wheel, a second feed roll'geared tosaid first feed roll to be driven in reverse direction thereby, an armswingable onvthe axis of. said peripherally toothed wheel, means on. said arm. and, yieldingly engaging. the

teeth in'said wheel for turning said wheel by swinging movement of the arm in one direction and permitting swingingmovernent of the arm free of the wheel in the opposite direction, a foot treadle beneath the top, connecting means between said foot treadle and one end of said arm and operating reciprocably through an opening in said top, means connected to the opposite end of said arm and operating reciprocably through another opening in said top, an abutment on said last means, and a spring confined between said abutment and said top for resetting said arm.

13. In a machine of the class described, a pair of upright frame members, a material roll having journals at its opposite ends for rotatable mounting in said frame members, anabutment on one journal, and a spring arm fixedly anchored and cooperating yieldingly with the opposite end of said material roll to force said roll endwise into cooperation with the upright frame member at the other end of the roll.

14. In a machine of the class described, a pair of upright frame members, a material roll having journals at its opposite ends for rotatable mounting in said frame members, an abutment on one journal, a spring arm fixedly anchored and cooperating yieldingly with the opposite end of said material roll to force said roll endwise into cooperation with the upright frame member at the other end of the roll, and means for adjusting said spring arm toward and away from the upright frame member cooperating with one end of the material'roll to accommodate rolls of different lengths.

15. In a machine of the class described, a frame for supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably mounted and adapted for operating said feed mechanism, a swingable arm coacting with said wheel to turn same upon swinging movement in one direction and swinging free of said wheel in the opposite direction, said feed mechanism comprising feed rolls having meshing gears, brake means for yieldingly preventing back-lash in said feed means, said brake means comprising a pair of brake arms secured to the frame and embracing and cooperable laterally with opposite sides of one of the meshing gears of said feed rolls, and means yieldingly clamping the brake arms into braking engagement with the opposite faces of said gear.

16. In a machine of the class described, means for supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably mounted and adapted for operating said feed mechanism, a swingable arm coacting with said wheel to turn same upon swinging movement in one direction and swinging free of said arm in the opposite direction, said feed mechanism comprising feed rolls having meshing gears, and brake means cooperating with one of said gears to yieldingly preventback-lash in said feed means, said brake means comprising a pair of spring arms adapted to receive one of said last gear members between same and having friction surfaces pressed yieldingly into engagement with opposite sides of said gear member.

17; 'In a machine of the-class described, means for. supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel rotatably mounted and adapted. for operating said feed 1,996,306 mechanism, a swingable arm coacting with said wheel to turn same upon swinging movement in one direction, said arm swinging free of said wheel in the opposite direction, treadle means, a connecting link between said treadle means and said arm for swinging the arm by said treadle means, and means adjustably mountedon said connecting link for limiting the turning movement imparted to said wheel by said arm.

18. In a machine of the class described, means for supporting a roll of material, feed mechanism for drawing material from the roll and feeding same through the machine, a wheel 'rotatably mounted and adapted for operating said feed mechanism, a swingable arm coacting with said wheel to turn same upon swinging movement in one direction, said arm swinging free of said wheel in the opposite direction, treadle means, a connecting link between said treadle means and said arm for, swinging the arm in the direction in which said wheel is turned by said arm, spring means for swinging said arm free of said wheel in the opposite direction, and means ad- 'IlI-IAlFtIEtY S. RUBENS. I

(JERTIFICATE 0F CORRECTION.

Patent No. 1,996,306. April 2, 1935.

HARRY S. vRUBENS.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 5. first column,

lines

1, 2 and 3, cieim i5, and 5188 29, 30 and 31, claim 2, strike out the words "with its axis in the plane in which said feed rolls are mounted and which intersects the axis oi said materiai roii" and insert the same after "frame" in lines 4 and 32, oi said claims; and

lines

3 and 31, claims 1. and 2, strike out the comma, before the article "a"; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the. case in the Patent Office.

Signed and sealed this 28th day oi May, A. D. 1935.

Les! ie Frazer (Scat) Acting Commissioner of Patents.