US1145450A - Machine for cutting strips of material into predetermined lengths. - Google Patents

Description

J. T. WOOD.

MACHINE FOR CUTTING STRIPS 0F MATERIAL INTO PREDETERMINED LENGTHS.

APPLICATION FILED MAR. I6, 1914.

Lmfifififla Patented July 6, 1915.

2 SHEETS-SHEET I.

J. T. WOOD.

' MACHINE FOR CUTTING STRIPS 0F MATERIAL INTO PREDET ERMINED LENGTHS.

APPLICATION FILED MAR- I6| 19I4. I

' Patented July 6, 1915.

2 SHEETS-SHEET 2.

B I I If! ,M TTORNEY WITNESSES lowing is a specification.

erases learners? caries.

JOHN T. WOOD, OF PRQVIDENCE, RHODE ISLAND, AS SIGNOR TO FRANKLIN PROCESS COMPANY, OF PROVIDENCE, RHODE ISLAND, A. CORPORATION OF RHODE ISLAND.

MAUI-ENE FOB CUTTING STRIPS 0? MATERIAL INTO PREDETERMINED LENGTHS.

Specification of Letters Patent.

Patented July 6, 1915.

Application filed March 16, 19M. Serial No. 825,009.

To all whom it 171 ay concern Be itknown that I, JOHN T. Wool), a

citizen of the United States, residing at Providence, in the county of Providence,

State of Rhode Island, have invented cer-' tain new and useful Improvements in Machines for Cutting Strips of Material into Predetermined Lengths, of Which the fol- My invention relates to improvements in machines for cutting strips of fabric or similar material into predetermined lengths, the object being to provide a simple and eliicient mechanism for this purpose and one capable of a wide range of adjustment for different classes of work.

My new machine is particularly adapted for severing a continuous strip of tubular fabric into relatively short lengths as required for use in various arts. For instance, the usual tubular lamp-wicking, stocking web and flexible, covering sleeves are fabricated by weaving or knitting the same in continuous strips of relatively great length, for the sake of economy in manufacture, and the strips are then cut up into shorter pieces as required. One particular purpose for which -these short lengths of fabric sleeving are adapted is for covering coptubes used in dyeing yarn in package form. In United States Reissue Patent No. 13,223 to F. Ii. Daniell, dated March 28, 1911, there is described and illustrated a cop-tube of this character consisting of an interior metal Erai'nework covered by a porous sleeve of reticulated fabric. The present machine is designed particularly for cutting the tubular fabric into sleeves of the required length for this purpose, but it will be obvious that it is equally well adapted for various similar purposes in. different arts.

The invention is fully described in the following specification, illustrated by the accompanying drawings, in which like reference. characters designate like parts.

In the drawings: Figure l is a front elevation of my improved cutting-off machine;

is an enlarged detail view of the cutting knives and mechanism for operating the same; and Fig. 3 is a plan view, of the same.

Referring first to Fig. 1, A designates the main frame of the machine and B is the driving-shaft supported to rotate in bearings 7), b. Preferably the bearings b, b

teeth 7'? on its periphery.

are mounted on brackets 7), 7), secured to the side of the frame A, or they might be constructed as a part of the frame. Mounted on the outer end of the shaft 13 is a driving-pulley C held fast by the set-screw c, and adjacent thereto is a loose pulley C onto which the driving-belt (not here shown) is shifted when it is desired to arrest the operation of the machine. The pulley C is held in place against the hub of the pulley C by a collar 0', and two collars abut the ends of the bearings I), Z) and are secured to the shaft B to prevent longitudinal displacement thereof. On the inner end of the shaft '13 is a bevel-pinion D which meshes with a larger bevel-gear D fast on a vertical shaft E. The shaft E rotates in bearings f, 7 formed on the brackets F, F which are secured to the side of the frame A, and two collars c, e abutting the ends of the bearings prevent end play of the shaft. Secured to the end of the shaft E above the gear D is a smaller bevel-gear G which meshes with a similar gear G on a horizontal stud-shaft II. The shaft H is mounted to rotate in a bearing 2' formed as a partof a bracket- I which is fastened to ably formed with side flanges is for holding 1 the material in position on its periphery. It is mounted on a dead-spindle or axle N which is adpistable in a slot (1 in the frame A and is secured in position by suitable means such as the nut n screwed onto its shouldered portion a. Secured to the inner side of the wheel K, or constructed as a part thereof, is a hub 71 formed with ratchet- Mounted freeto turn on the spindle N between the wheel. K

the end of the link or connecting-rod I1 is secured by the bolt or pin Z. The opposite end of the link L is pivotally secured to a stud j which is mounted on the disk J and serves as a crank-pin therefor. Preferably, the crank-pin j is adjustable in a radial slot 1" in the disk J and is secured in place by a nut i which binds a shoulder on the and frame A is a rockable arm 0 to which pin against the side of the dish. Threngh this means the ameunt of throw at the c 'ank pin duringthe' rotation of the disk l can be adjusted to vary the range of oscillation of the rockable arm 0. The arm 0 carries a pawl 0 which is held in engage ment with the teeth 70 on the hub of the Wheel K by means of aspi ing 0. The ro tation of the crank-disk 5 causes the arm to be rocked back and fcrthorrthe spindle N, and With each forward movement of the arm in the direction indicated by'the arrow Fig. 1, the pawl 0 will engage the teethit to turn the wheel K in the same direction. ll' hen the arm 0 moves rearwarclly in the opposite direction fron'i that indicated by the arrow 9?, the pawl 0 rides back overthe teeth J0 and the inertia of the relatively heavy Wheel K is sullicient te r sist any tendency to turn it backwarcily.

Referring now to the other views of the drawings, two brackets P, P are fa stened to the front of the frame A and are termed with a sort of platen or table It which serves as a support for the cutting-knives or shears S, S". The top of the table It is formed with. raised grades 7*, r running lengthwise of its sides and a central, rectangular openii'ig r" through which the material adapted to feed. Let into the top of the table R is a relatively thiniplatc S which held in place by suitable means, such as the rivets 8, etc, shown in Fig. 2, and serves as the fixed limits-blade. T he movable i nite S is of greater thickness than the blade and is titted to slide betveen the guides r, r on the table It. being held in place by the ovcrla ir ixing strips 7 r which. are secured to the table by the bolts The twc knife-blades S, 55" are made with opposite V-shapel openings which COI'IQSPDllCl to the rcctan r ular opening 7" the table It and are beveled oil to form the shear like cutting edges ch, 8 [ts the blade if" slides across the top of the blade S the edges 8" 5 meet at right-angles to shear the material M. At the rearward curl. of the blade S a vertical stud. or pin Z riveted in place as shown in Figs. 1 and lotatably mounted on the stud t is a roll T helcl in place by a collar 6 fastened by the set-screw Z Referring particulzn'ly to l? 3 a cam U is mounted on the vertical shatt l) with its face a adapted to engage the periphery of the roll T. The cam ll secured re tatirely with the shaft by a taper pin u or any other suitable means. Two springs V are s cured at their ends to pin c prejecting from the side of the frame A, see Fig, 1, while their opposite ends are as tenedte pins *0, 21' driven into the knifeblacle The springs V act to withdaw the blade bearing on the canrface a.

5; to its inoperative positioihasc -5- shmrn in Fig". 3 and to maintain the rcll T movement at L I maseec pivotali y mounted. a doable, crooked arm ll,

only one side of which is shown in the draw-- ings. itotatably n'icuntcd (lira pin '10 tending between the sides of the arm il is a Wheel or roller X adapted to hear on the inatcrial as it leads around the pcrijheiji oi the Wheel K. .31 similarly 'l ormcc dew l le-sirle 1l arm ll i'\'ete(l on the pin '21," and carries at its opposite end a pin 10 en which is rotatably mounted a secend pressure roller X". The outer end of the arm cz'rrries a pin w to which is fastened a v0 having a Weight suspended at its r 'liher'eight ll acts tarou the arm n 1 pressure to the reller X te held tl' aterial M against the rim ct the Wheel JLS the mrterial draws up from its of supply, not here shcwm it passes a wire guide Y which projects from of the frame A.

its the material iii l delivers from the riln K it feeds through a funnel-shaped hop-yer 5? which is supi ierted an arms 2 pivoted erthe pin 1 Attire h r the hc ncr I: is a cross-piece s, H adapted 1m strike against the u tairned rs of ste members secured en the screws 7' as shown in hmizontallv i rcim the cellar i which is mounted on the stud If at the end (it the cut ter-blacle til, is a pin t locked in the cellar by a check-nut Z1 l' ermally, the hem hangs suspended. with its "rcss-bar 2 res a against the stc' 3, but as the cr ter-hlade 55': mm. he left the end or 1;, pin l? strikes agn its sine and tilts it into the position llustrated by (lash lines e machine is s led up thre the W i i ll Lil Lin. Ll

shearingrd ades Si F51 When the dr from the idlerwullev c (x 1 r v r the shart is r z 11 cf gearing belt is the turned tr direction it is rot it the c ans act thrmigh the 1:01

late the arm O; 'l

arm is 21 ansnxitter feel the Wheel lie inrlica 7c l l tent el this in term 1' may be varied by adjusting the c toi 'arrl er away ti-cm the l i in this the amount th l1 the lit er durii WllGSl l T' $4 1-H i. acceruancemm. the it regulated 1 "to be During the operation of the feeding-means the shaft B, being continuously rotated, will operate the cam U to slide the cutter-blade S to the left to bring its sharpened edge .9 into cooperation with the edge 8 on the fixed blade S. At the end of the stroke of the blade S the pin 25 comes into engagement with the side of the hopper Z and tilts it into the position illustrated by the dash lines in Fig. 2. The sharpened edges of the cutter-blades S, S now meet and sever the material with a scissors-like action. After the short length of material has been cut off from the main strip it drops through the tableR into a suitable receptacle arranged beneath. As soon as the severing operation has been completed the movable cutter-blade S starts to recede from the fixed blade S and the hopper Z drops back into its original position as shown by the full lines in Fig. 2. The operation of the crank-disk J is so timed that as the cutter-blade S moves forward to sever the material the pawl 0 on the arm 0 is moved back across the teeth 7&2 on the hub 76' and the wheel K remains at rest.

Then, after the material has been severed the arm 0 will be moved forward to .turn

the wheel and feed the strip M through the hopper again. Thus the feeding of the wheel K takes place intermittently after each severance of the short length of material and the machine continues to operate in this manner until the whole strip is cutup. The purpose of the auxiliary roller X is to provide for holding the material M in place on the feed-wheel K clear to the last end of the strip. That is to say, if only the roller X were used, after the end of the strip passed thereunder there would be no means for holding the material in place for another severing operation. \Vith the presentan rangement the strip is held on the wheel K even after its end feeds almostv down into the hopper Z, and in this way the machine is adapted to cut the material into short lengths without wasting the last end. By adjusting the radius of movement of the crank-pin the turning movement of the wheel'K can be regulated to feed a shorter or longer length of material to the cutterblades as required and a still wider range of adjustment can be provided by substituting feed-wheels of different diameters. The tiltlng action of the hopper Z is provided in order to insure that the severed end of the main strip of material will be carried back into proper position to feed between the knives after each cutting operation. If the end of the strip were left free it would be carried up on top of the blade S as the blade S sheared throiigh the material, so that it would not feed down between the blades again after the withdrawal of the movable cutter. As now arranged the depending end of the strip is controlled by the hopper Z to as can derangement or getting out 'of order and once set the mechanism will operate automatically for long periods without any attention from the operator.

Various modifications might be made in the structure and arrangement of the parts of my new device without departing from the sp1r1t or scope of the invention.

Therefore, without limiting myself to the precise construction. shown and described,

what I claim is:

1. In a machine of the class specified, the combination with a feed-wheel adapted to receive a strip of material on its periphery,

of means to intermittently rotate the wheel to feed the material downwardly therefrom in predeterminedv lengths, horizontally disposed cutter-blades arranged below the wheel to adapt their cutting edges to act on the material as it is fed therebetween, means to operate one of the cutter-blades to peri odically sever the material, guiding-means engaging the material as itdelivers from the feed-Wheel, and means to operate the guiding-means after each. severing operation to bring the feeding end of the material into position to enter between the cutter-blades at the next feeding operation.

2. In a machine for cutting strips of material into predetermined lengths, the combination with a horizontal table provided with an aperture, of'a knife-blade fixed on said table, a movable knife slidable on the table. a feed-wheel arranged above. the table to adapt it to receive the material to feed the latter down through the aperture therein, means to rotate the feedwheel at predetermined intervals, and means to reciprocate the movable knife to sever the material in lengths as the feed-wheel delivers it thereto.

3. In a machine of the class specified, the combination with a. horizontal table pro; vided with a. central aperture and guides extending along its sides, of a knife-blade fixed on the table with its cutting-edge overhanging the edge of the aperture, a movable knife arranged to slide in the guides on the table to carry its cutting-edge across the edge of the fixed blade. means for reciprocating the movable knife, a feed-wheel arranged above the table to adapt it to receive the material on its periphery and feed the same down through the aperture between the edges of the knives, and means for roice tating the feed-wheel at intervals to deliver the material to the knives in predetermined l engths.

'l. in. a machine of the class specified, the combination with a main frame, of a horintal, apertured table overhanging the side or the frame, a cutter-blade fixedly mounted on. said table over the aperture therein, a movable cutter-blade sliclable on the table across the face of the fixed blade, a cam for operhting the slidable cutter-blade, power mat unted means for operating the cam, a feed-wheel mounted in hearings on the i-ranie above the table to adapt it to receive a strip of material to feed it downward through the aperture between the cutter-- hlades, and means to rotate said feed-wheel at intervals to deliver the material to the utter-blades in. predetermined lengths.

In a machine of the class specified, the combination of a fixed cutter-blade formed with a sharpened cutting-edge, of a movable blade having a similar cutting-edge and adapted to slide across the face of the fixed hlade, a roll on the movable blade, a cam engaging the roll to slide the blade, and means to feed a strip of material between the blades at regular intervals to cause the same to be severed into predetermined lengths.

(5. in a machine of the class specified, the combination with a fixed cutter-blade, of a movable blade adapted to slide across the face of the fixed blade, a rotating camv for o 'ierating the movable blade, resilient means for retracting the movable blade to its-inoperative position, and means to iDi'Ql'T-llttently feed a strip of material between the blades when the latter are open to Omit-5 3 the same to be operated upon at regular intervals to sever it into pi'edeterininedv lengths.

7. In a machine of the class specified, the combination with cutter-blades formed with shearing-edges, of means to cause a relative s reciprocation between the blades, means to intern'iittently feed a strip of material between the shearingedgcs of the blades, guiding means engaging the sheared end of the strip to bring it into position to enter between the blades during the feeding op eration, and means to operate said guiding);- Ineans after each shearing action of the out ter-blades.

8. In a machine of the class specified, the or; combination with a wheel adapted to receive a strip of material on its periphery, means to intermittently rotate the wheel to taped the material in predeterinii'ied lengths, sew erii'ig-ineans for cutting the material as it {ill feeds thercthrough, a hopper through which the material feeds 2 it leads from the wheel and means to actuate said hopper during the operation of the severing-n1ains to bring the several end of the material into prop position to food through the severing-moans.

In testimony whereof I ailixniy signature in presence of two witnesses.

JOHN T. WOOD.

Witnesses llnnnnn'r K. ALLAnn, time. A. l VHI'rI-J, Jr.

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