US1306992A - Sheet-stripping machine - Google Patents

Description

S. BARRILE AND l. L. MARANHAS. Y

SHEET sTRlPPmG MACHINE.

APPLICATION FVILED JAN. l?. l9|9 Patented June 17, i919.

Ja" l 1r sTATEs `MEET PNUE# sALvADOE BAERILE, OE BOSTON, AND iLDEEONsO L. MAEANHAS, OE soMEEvILLE,

MASSACHUSETTS.

SHEET-errements MACHINE.

Specification of Letters Patent.

4 Patented June 17, 1919.

Application med January 17, 1919. serial No. 271,581.

To all ankam t may concern Y w Be itknown that we, SALVADOR BABRILE and ILDEFONSO L. MARANHAS, citizenof the ful Improvement in Sheet-Stripping Machines, of which the following is a speoification, reference being had therein to the accompanying drawings.

The object of our invention is to provide a simple device for stripping sheet material into narrower strips for any use. One particular use'of a device'embodying the invention is to cut sheets of leather into strips of suitable width for the side boxingrr on chair y cushions.' Another specialuse'is to cut cloth or silk into strips of any widthdesired. The invention, however, is broadly useful in Vconstruction of machines for cutting any kind i adjustment Of'theedge guide.

f Other features will beifmore particl`1 la'i'lyV setforth hereinafter.

of sheet material into strips whether leather, silk, cloth,paper or other material. .i Y`

.One feature -of the invention relates to the knife and knife holder. Y i

`Another. feature relates to the combined presser roll andV edge guide and means for adjusting them lfor varying width of strips tobep'roduced.

" `Another feature relates to themethod of mounting thepresser 4roll on the edge guide so as to secure a yielding'movement to allow for varying thiclmessesrofinaterial or l'iumps 1in* the sheet..

.AAnother feature relates 'to the; bedplate -on whiohthefknife, presserroll and-edge .guideare mounted." l IAnother featurerel. 40 i clam-ping'the 'bed to atwork bench' or table' ,Y and vto the connection of the clamp withthe 'bed .plate to avoid interference the The invention will be fully understood Afr-Ornthe following description when taken in connection with the accompanying drawings and the `novel features thereof willyfbe pointed out and clearly-defined Vin the claims V'at the closeofthisspecication.

In the drawings, Figure 1 is a plan view of a device embodyingthe invention.

Fig. 2 is a side elevation.

Fig. 3 is a front-end view.

Fig. 4 is a side elevation partly broken away showing theknife adjusted to a different position from that shown'in Fig. 2, this being the preferable position `for use in cutting veryethin and iexible materia-l like silk or paper, theA cutting edge being inclined backwardly while in Fig. 2 it is shown inclined forwardly for use in heavier or. stiffer material such as leather.

` Fig. 5 is a detail side view partly in sec-v tion through the bed plate showing the fixed lpart of the knife holder.`

Fig. 6 is a detail view of the removable clamping block portion of a knife holder.

Yeferring now to the drawings, 1 is a bed plate on which are mounted the other parts of the device and which is intended to be clamped to a work bench or a table. In one l edge of the bed plate near one corner is inserted -a metallic block 2 which forms a fixed portion of the knife holder and is secured to the edge of the table 1 in any suitable manner as for instance by screws 3. The knife f4' which has a straight cutting edge 5 is clamped to the fixed member 2 by a separable clamping block 6. The knife 4 is held between the fixed member 2 and the movable member 6 of the holder, the movable member or 'block 6 `being secured to the fixed member 2 by a screw 8 which screws through a hole 9 inthe movable member 6 and into a hole 10 in the fixed `member 2. Preferably the screw Vis provided with a wing head l1 for convenience' in setting'up the screw.

The stationary member2 is formed with a laterally extending, flange l 12 near its under "side on which-the movable clamping mernben 6 isseated.4 `,Itis also'provided at its ,upper edge withthree laterally extending `' flanges orlugs 18, 14 and 15 all spaced apart from each other, these upper` anges all beingV in alinement1 with` eachother and parbrallelV with the lower flange 12, thus forming -a groove between the lower flange and the upper set of flanges of a width substantially equal to the width from the upper to the lower edgefof the movable knife clamping member 16, said member 6 having a sliding fit in said groove. The upper `middle ange yllis much shorter than the lower flange 12` andispreferably so located thatits median line vertically is in alinement -with themedian line vertically of the lowerflange l2.

The left hand end of the bottom flange 12 as viewed in the drawings is formed with a Y as bevel l16and the left hand end of the flange 14 is formed with a bevel 17 at the same anglelasthelbevel 16 andv in the-same Vstraight line so that when the knife 4 is clamped within the holder the straight cutting edge 5 may rest on the two beveled edges 16 and= loosened'.

When .the blade is set in this position and as shown inFigs. 1 and' 2 the cutting edge 5 inclines upwardly toward. the presser roll 19 and the cutting edge of vthe blade forms an acute-angle with the face `of the bed plate which serves to give a little better bite of the ,knife on the sheet as thesheet is drawn toward the knife than if the knife were set perpendicular or at an. obtuse angle to the I bed plate.

As previously stated,for some classes of material it is 'preferable tohave the blade inclined backward from thepresser .roll for convenience of handlingv thematerial if the character of the material is suehlthat the knife` will readily cu't it in that position als ythough it does not have such abite as is given bythe 4acute angle arrangement. 'llo this end, therefore the rightihand end of the flange 12I is formed with beveled end 20 inclined at an equal angle to the bed plate as the beveled. end 16but .in another direction and the upper middle -flange 14 is formed with a bevel 21'at its right hand, end in alinement with the bevel v of the lower flange thus forming a seat fortheback edge 22 nof the knife blade asshown in Fig. 4.

The Vleft handend ofthe upper :flange .15 is formed with ,an under cut bevel 23 andthe i lower flange 24 isforined with an undercut vbevel 25 in alinement withthesbevel 23., both of said under cut bevels23 and' 25.1being-pa-1e ,Y allel with the bevels `2O and --21 thus` forming `a grooved way for the blade 4..to..iit -therein as shown infFig. V4. y Y

.By slightly loosening the-clamping screw. 8A, the blade'4mayb`e taken font of the holder and shifted from the'positionshown in Fig. 2 to theposition shown `in ,'Fig. l4, and clamped'in itsadjusted position by again ysetting up the screw 8. Vlhen in the position shown in. Eig.- 2the cutting edge of the blade lrestsagainst `the back Vedge 17 ofthe i flange;.14,` but whenthe blade is in theposition5 shown in Fig. 4, the Vback edgeofthe blade restson thebevel edge-,21 of the :flange 14, the cutting edge being in allcases on the side toward the roller, whichever way it 1s inclined. Y

A straight edge guide 26 which lies in a plane parallel with the plane of the knife blade 4vis secured to a slide bar 27 which is slidable and adjustable transversely of the planeof the knife blade so that the straight edge 26 may be adjusted to varying distances vfrom the plane of the knife blade. In order to permit the adjustment of. the said slide bar with the straight edge and to vclamp in its adjusted position, the bed plate 1 is formed with a slot 28 extending therethrough and Lyingat right angles :to

the .plane of the knife and the intended line i ofthe straight edge.4 A4 guide pin 29eX tends up throughjsaid slot 28 and through i a. hole in the bar 275 the lower end" ofthe said pin-havinga iange head 30to prevent Y its being pulled up through the slot andthe upper end of the pin being threaded to receive a nut 31, preferably a wing nut Aas shown, which may be setup toclamp the bar 27 and the straight, edge guide 26 in its adjusted position. Preferably a washer 32 is provided between the head 31 Vand the upper faceof the bar 27 totake up the wear i when the nut is set up. Preferably also the under side of thel table is formedwith a transverse groove 33 `of somewhat greater width than the guide slot 28 and into which the guideslot opens2 said groove being for the purpose of forming a counter-sink for the head 3Q of theV guide pin 29.

with twopairs of guide pins 84ftheV two pairs being onopposite: sides off the center -100 The bar 27 is also preferably provided" guide lpin 29, eacli` pair being in. aline parallel with the guide slot 28, aiidjeach pair of pins engages with atransversegui'de slot 35 inftheloedVv platel. "The/seguirle pins' 34, 34 .engaging with the `greore 535 previent the oscillation of gthe straight 'edge Vguide bar 27 on the guideY pin 29 vande maintain the.V straight edge always `.at right angles tof the y `plane of the knifeibladei By loosening the"V i i wing nut Slthe straight. edge `banmaybe iesY :ilo

adjusted. tofany position ,towardor'from the knife blade. as permitted by thejlengtlrt of/thet guide sl-ots..V

Amcasuring scale `36 is `set into Yor marked l.iis

off upon the bed 41 transversely ofthefbed, the unitsof measurement beginning with the plane Vof the knifeblade 4.-` flhestraiglitg,120

edge .bar may therefore" beqadjusted to greater or less distaneesfrom the blade-4, the Y distance between `the blade and the straight Y A edge. governing the widthofthe strip which will be cut from` the sheet.

A yieldingpresser roller "19 is journaled l'on a shaft 38, which is provided with a bracket stem SQseCured toithe upper .face of the straight edgesbar `27. The shaft and presser roller proj ectfrom `themounting on the straight-edge bar over the upper A,face of the bed plate 1 transversely thereof just back of the edge of the knife blade. The presser rolleris long enough so that when theedge guide is 'set to the extreme width of the widest strip which the device is intended to cut said presser roller will extend acrossthe full width of the strip,l Vso that the same presesr roller is adapted for use in cutting a strip of any `,width within the range of`capacity of the machine as controlled by the rangeof adjustmentof the edge guide.

i The presser roller is yieldingly mounted so that it exerts a yielding pressure upon the sheet of material which is fed under it. It will yield to varying thicknesses of the materia'l whether the whole sheet is of uniform thickness or whether there may be varying degrees of thickness in any particular sheet. The preferred yielding means for securing the presser roller tothe straightedge bar are as follows: Two pins 40, 40 pass loosely through the bracket 39 and are screwed into the straight edge bar 27 but s0 as to have upwardly projecting shank portions. Tension springs 4l are coiled around the shanks of the pins 40, 40 above the bracket 39 one end of each spring Ibearing against the bracket and the other end of the spring bearing against the under side of the head of the pin, thus holding the bracket end of the shaft with a yielding. pressure on the straight edge bar. The vother end of the `is unsupported, but the shaft will be `held by means of its bracket connection 39V with the straight edge bar in properv position above the bed plate. The presser roller, Vwhich is preferably of rubber, is'of sufficient diameters'o that its periphery will normally be in contact or nearly in contact with the face ofthe bed plate so thatV it will have to `yield very slightly tol allow the sheet which V isnto be stripped to be fed under it, thus always maintaining thev i sheet smooth and a 4liat' when vit reachesgthekni'fe bladeand there ,v will' also be suliicient drag-on `the that it'willnot slip too freely. 3 -;l a stripping the sheet i` it will'be. fed for-f f ward under the roller withonefedge against Y ,`the" `straight edge 26 and drawn forward until'itlengages the bladeof the knife, then lLby taking hold ofthe ,sheet atjeach of the two front corners and pulling the Ysheet against the knife,keepingthe sheet flattened .l down to the surface of the Abed platefit will, j cut off a strip of a width equal to thedisj tance between the plane of the knife and the "line of the straightY edge. As will be well l understood, the straight edge may be adjustj i sheet so ed to cut any width ofstrip desired within width it may be the entire width will be engaged by the presser roller.

As previously stated the device is intended to be clamped to the edge of a bench or work 'the clam-p.

ztheretoi" transverse groove 42 extending in from the edge on the opposite side from the edge in whichv the knife holder is set, said groove extending in beneath the edge guide bar 27. A bracket clamp 43 is provided having one arm 44 which fits into said groove 42 and having vanother arm 44 which extends beneath the table 45. A clamping' screw 46 is provided which may be set up to engage the under side ofthe table 45 to holdtheclamp firmly to the table and clamp thebed plate to Vthe table. ,In order to `properly position the cla-mp `with relation to the bed plate the upper arm 44 is provided with a lug or stud 47 which engages in ahole 48 in thebottom of the groove 42.- Thegroove 42 forms a counter-sink for the arm 44 of the clamp so that the arm of the clampfwill lie flush withor at least not extend above the surface of therbed plate. Thisv allows the straight edge bar to be adjusted the full width of the bed plate and slide over the arm 44 of Preferably the arm'44 is somewhat wedge shaped, the taper however being on the 4 under side as shown in Fig. 3 so that the upper side will be parallel with the face of the bed plate. i The groove 42 will be of `varying depth, that is have a slanting bottomto correspondwith the angle of inclination ofthe lower face of thearni 44.

Q What weclaim is:

i `11.'A machine for cuttingsheet material into strips'havinga bed plate, a knife and `a holderjfor the knife, said holder comprisfing fixed member "secured to one. side of the bed plate, and a movableclampinglblcck,

A the xed member `being formed withtwo sets ,.offgrooved guide slots having inclined seats Vfor the knife, whereby theknife may ber supported-in either' of said grooved slots atfa fixed angle of inclination with relation tothe face ofthebedplate, one setfofwsaid a guidefslots 4holdingy theknife *withf the `cutting edge-inclined "forwardlytoward the sheetas the sheet drawnj toward theblade, and the' other 'setfof' guidel slots holding the Y knifefwithj'its cutting edgeinclined backwardly Lfrom` the sheet atf` `an`,-'obti1`se angle f2. A `n nachine'for 'cuttingjsheet material into strips having a bed plate, a knife and a holder for the knife, said holder comprising rioV axed membersecured to one side ofthe Y theliixed memberbeing'formed with two setsofgrooved guide slots having inclined seats for the knife, whereby the knife may 4 ,bed"plate," and ajmovable clamping'block,'`125 `the range of the adjustability, and whatever .slide is adjusted. w. j l for cutting sheet material roll above the `bed plate, a straight edge guide, aknife andV aholder for the'knife, a Y slide to which said straight edge guidey isV ,1 5.V A .machine ,knife with its cutting edge inclined back- `wardly from ,the sheet at an obtuse angle thereto, a groove in the side of the fixed member ofthe holder .to formv a guideway and yseat for said clamping block and `means for binding the said clamping block in said groove in the fixed memberand clamping the knife between the said block and fixed member.

3. A. machine for cutting sheet materia into strips having a bed plate, a knife and a .holder for the knife, said holder being .formed with two -sets of inclined'guides for the knife, one set of guides being inclined in suchadirectionthat the knife blade when positioned in said guides will have its cutting edge inclined at an acute angle to the upper face of the bed 4plate and tothe sheet as it is drawn against the knife edge, the other set of guides being inclined in adirection so that when the knife is positioned properly with relation to said ,guides the cutting edge of the knife will .be inclined at an obtuse angle to the upper face of the bed plate, and to the sheet as the sheet is drawn against the knife edge, and means for clamping the knife blade to its seat in said holder.`

4. A machine for cutting sheetV material into stripshaving a bed plate, a presser roll above rthe .bed plate, a straight edge guide, a knifeand a, holder for the knife, said straight edge guide beingl adjustable transversely of said bed plate soas toy vary the distance between the lineV of the straight Vedge'and the plane of the cuttingedge ofV the knife, said'presser roll being, secured to thefsaid straight edge guide and movable therewith. A i c Y j for cutting sheet material into strips having a. bed plate, a ypresser roll above thebed plate, a straight edgel guide, Y a knife and a holder for .the knife, said straight edge l guide being connectedrto a slidewhichis adjustable transverselyref the 50,`

bed plate so as to vary thedistance between 4the straightedge guide and the -plane of the i knife, said presser roll having .an extension member atone end which is secured to ,said Slide therebyholding thepresseryrolltransversely vof theV bed plate, the otherlendyof" said,presserfrollbeingfree, said presser roll being carried bythe said slide when'the said j 6. machine into strips having Va bed plate, a presser connected and .which is adjustable transversely of the bed plate andso as to vary the distance between ,the straight-edge guide and th'e ,plane of theikn-lfe, 5 said presser roll having :.an extension member Y at one Aend which .is secured 5to vsaid `slide thereby hold- `ing the presser roll transversely of the bed plate, ,said presser rollbeing carried -by the said slide lwhen theV saidfslide is adjusted,

,thecextension ,portion of the presser roll being secured to `the said slide `-by pins passing loosely through said extensionmember into the slideand having projecting .shank portions and having, tension'sprimgs which held the said extension member. against the said `sli'delby a yielding pressure therebyallowing the presserroll itself toyieldingly press thesheet-against thebed .plate when asheet is fed beneath theV presser roll to the cutting knife. e j

7.V A machine for cutting sheet material into strips `,having a bed plate, apresser Vroll above thebed plate, a straight edge guide, avknife and a holder for ,the knife, a slide to Vwhich said Vstraight edge guide is con-V nected and which is adjustable transversely of thebed plate so as to vary the distance between the straight edge guide and the plane of the knife, said presser roll having an extension member at one'end which is secured to said slide thereby holding the presser roll transversely of the Vbed plate, said presser' roll'being carried by the said slide whenthe said slide is adjusted, the saidY bed plate being `formed with a transverse guide slot and the said slide being securedto the bedplate by a screw pin passing up through said slot'in the" bed plate and through the said slide, the said pin being formed with ahead onits lower end and Y a binding nut which screws onto theupper end of said screw :pin to bind the said slide :in its adjusted position tothe ',bedplate.

8. A machine V:for cuttingl sheet material into strips having abed plate, apresser roll above the bed plate, a straight edge guide, Y Z11o aknife andza holderforfthe knife, a slide to which fthejstraight ledgeguide is connectedV Vand whichy is @Stable .trlsvefselyfof i the ybed plate so as tovary the distance between'the straight'. edge bguide .and y the plane c I of the-lniife, said presser roll having an eX,-

.tension member 'at one end which i'ssecurejd in the bed plateandthrough, the said slide, thesaid pin being formed with ahead on to said slide therebyeholding'the presser roll transversely of fthe bed plate, said *presser roll, bein-g Vcarried by `the said slide whentheV said slide isadjusted,l the said bedvplate be- Y ingformed witha transverseguide slot and' the said slide'bei-ngV secured toA thebed plate Y 4 by a screw pin passingup through said slot Y its lower end and abinding nut which screws onto the upper end of said screw pin to bind the said slide in yits adjusted 'posi-v tion to the bed plate, thebed plate fhaving a countersink on its underside on both sides of the guide slot to receive the head of said screw pin. Y

9. A machine for cutting sheet material into strips having a bed plate, a presser roll above the bed plate, a straight edge guide, a knife and a holder forthe knife, a slide to which the straight edge is connected and which is adjustable transversely of the bed plate so as to vary the distance between the straight edge guide and the plane of the knife, Asaid presser roll having an extension member at one end which is secured to said slide thereby holding the presser roll transversely of the bed plate, said presser roll being carried Iby the said slide when lthe said slide is adjusted, the said bed plate being formed with a transverse guide slot and the said slide being secured to the bed plate by a screw pin passing up through said slot in the bed plate and through the said slide, the said pin being formed with a head on its lower end and a binding nut which screws onto the upper end of said screw pin to bind the said slide in its adjusted position to the bed plate, said slide being provided with additional guide pins on` two opposite sides of the said first mentioned guide pin and the bed plate being formed with guide grooves to receive said guide pins.

l0. A machine for cutting sheet material into strips having a bed plate, a straight edge guide, a slide to which said straight edge is connected and which is adjustable transversely of the bed plate, a presser roll secured to said slide and movable therewith and extending transversely of the bed plate, a knife, a holder for the knife mounted in said bed plate in proximity to the presser roll, a bracket having an upper arm secured to the bed plate and a lower arm adapted to extend under the top of a table,

and means for clamping the said bracket' to a table, said bed plate being formed with a transverse groove in its upper face t0 receive said upper arm of the bracket, said groove being of sufficient depth so that it will form a counter-sink for the' upper arm of the bracket and permit the slide which carries the ed e guide to slide over the top of said upper racket arm.

In testimony whereof we affix our signatures.

, SALVADOR BARRILE.

ILDEFONSO L. MARANHAS.

` Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images