US2601183A - Adjustable strip cutting tool - Google Patents

Description

P.l H. UNSINGER 2,601,183

ADJUSTABLE STRIP CUTTING TOOL Filed July 5,` 1947 June 17, 1952 14 6263 64 TIE-7 INIVENTOR.

45 Philip H. Unsmgez' .n/y @M4/yn ATTORNEY Patented June 17, 1952 ADJUSTABLE STRIP CUTTING TOOL Philip H. Unsinger; Fremont, Ohio, assignor to Unsinger A P Corporation, Fremont, Ohio, a

.corporation of Ohio Application July 5, 1947, Serial No. 759,107

4 Claims. (Cl. Sil-293) This invention relates to a strip forming device and more especially to an apparatus or device for shearing strips fromv a larger area of material.

The invention embraces the provision of means for subdividing a strip of wood or the like into narrow strips and is inclusive of adjustable means for obtaining different widths of strips from the supply of material.

The invention comprehends the provision of a device including an adjustable cutter for a strip severing device, the cutter being arranged for adjustment to produce strips of various widths from a supply of material andin which the operative or cutting edge of the tool is enshrouded so that there is no liability for the user to be injured by the tool.

Another object of the invention resides in the provision of a strip forming or shearing device in which a strip may be severed from a supply of material while the device is held in the hand of the operator or the device may be used while mounted upon a supporting surface.

A further object of the invention resides in the provision of a strip forming device adapted to rapidly shear thin strips from a wider strip of material and whereby the portion of the device taking over the strip is adjustable to accommodate material of various thicknesses.

A futher object of the invention resides in a strip forming or shearing device in which the cutting or shearing instrumentality is adjustably supported, the device being provided with indexing or gaging means for determining the size of strip to be formed, the combination including a securing means for retaining the cutting tool or instrumentality in adjusted position so that a plurality of strips of identical widths may be formed.

Further objects and advantages are within the scope of this invention such as relate to the arrangement, operation and function of the related elements of the structure, to various details of construction and to combinations of parts, elements per se, and to economies of manufacture and numerous other features as will be apparent from a consideration of the specification and the drawing of a form of the invention, which may be preferred, in which:

Figure 1 is a top plan view showing one form of my invention with which is illustrated a comparatively broad strip of material from which narrow strips may be obtained;

Figure 2 is a front elevational view of the Strip forming device shown inFigure 1;

Figure 3 is a side elevational view of the strip forming device;

Figure 4 is a vertical sectional view taken substantially on the line 4 4 of Figure 1;

Figure 5 is a vertical sectional View taken substantially on the line 5-5 of Figure 2;

Figure 6 is a sectional view similar to Figure 4 embodying a modified form of cutting instrumentality;

Figure 7 is a detail sectional view taken substantially on the line 'I--'I of Figure 6, and

Figure 8 is a plan view of one of the elements forming a part of the strip forming device.

While I have illustrated my invention as embodied in means particularly adapted for subdividing or severing strips from a larger strip of wood, it is to be understood that the principles of my invention may be embodied in arrangements for performing various cutting or severing operations upon strip material as for example routing, recessing, fluting, impressing or forming various cross-sectional configurations in strips of material.

Referring to the drawings in detail and especially to the form of invention shown in Figures 1 through 5 inclusive, there is illustrated a frame Il! which is formed with a horizontal portion II and a projecting flange I2. Disposed in substantial parallelism with the plate-like portion II is a base or member I4 which is secured to the flange portion I2 by means of screws I5. The heads of the screws I5 are preferably countersunk so that their exterior surfaces do not project beyond the lower surface of the base member I4.

The space between the plate portion I I and the base member I 4 accommodates the material or wood W from which strips are to be severed or formed. The portion I I is formed with spaced upwardly extendingl projections I'I defining an intermediate uniplanar surface IB; The uniplanar surface I8 and walls 2li form a suitable guiding means or way adapted to accommodate a cutter supporting means or member 2|. The member 2I is tted between the projections Il for relative slidable Amovement providing for adjustment as hereinafter explained. The member 2| is formed at one end with an upwardly extending portion 22 which is formed on its forward face with a recess 23 adapted to receive and accommodate the body portion 25 of a cutting or shearing tool26.' The projection 22 is provided with a threaded bore' which registers with an opening in the shank 25 of the cutting tool 25 adapted to accommodate a screw 28 for retaining the cutting tool to the projection 22. The member 2| carrying the cutter 26 is slidably adjustable to position the cutter with respect to the ange 2 in order to vary the widths of strips 43 severed from a supply of material W. The portion is formed with a slot 3U to accommodate adjustment of the cutter 26. The member 2| is provided with -an elongated slot k3| through which extends a screw or bolt 32 and which is adapted to receive a thumb nut 33 and washer 34, the thumb nut being utilized to secure the cutter supporting member 2| in adjusted position. The body portion is provided with-a threaded opening to receive the threads of thescrew 32 so that upon loosening or releasing the thumbnut the screw 32 will remain in fixed relation with respect to the portion The canted face portion of oneofthe projections is calibrated with graduations, and the member 2| is provided with an index line 38 which is adapted forregSiration with the vgraduations 36 to indicate the width of strips40 that may be severed `from thclarge stripor supply W. Thus the graduations 36 maybe spaced Itorepresent distancesofqlg of Aan .inch or any other unit of measurement. The innerfacel, of the portion l2 provides the guiding means or initial. positioning means for the material Wand thedistance of the cutter 28 from the guidingface .4| determines the width of vthesevered strip ,40.

Means are provided whereby the device may accommodatematerials of various thicknesses. In the form ,of the invention disclosed, this means is in the form of ,a resilient memberv43, the same being shown per se in Figure 8. Member 43 ,is formed with a centrally disposed projection45 provided withan opening 4S toaccommodate the. passage of thebolt or-screw 32. As shown in Figures land 5, the central portion of member 43 is also formed witharecess 41 coextensive with the slot or recess-'30 in portion to accommodate the relativewmoyement of the cutting instrumentality 26. The member 43 is provided with resilient portions 4 9 which are curved toward the b ase plate |4 as shown in` Figure 4. They extremities of portions'43extend upwardly as at150 adjacent the ends of portion and plate |4. `The curved portions v-49 and 50 are kjoined by curved sections -or configurations 5|. The portions49are integrally joined-.with the ycentral'or uniplanarportion 52, the juncture being configurated -by'ridge portions-53,as shown inFigure 4. These ridges are for the purpose of adding strength or stiffness to the eentralportion 52 so that the latter will lie in coextensive relation with the lower surface of portion Each of the curved portions v49 Vare formed :with a series of spaced parallel slots 54 to render the portions `49 yresilient :so that -they -may be readily exed into engagement .withthe wood or material to be severed by the'device.

The upper portion of base plate |4 is lformed with a groove or depression 56 to accommodate theapex or point of the cutter 51 which projects into the groove for the purpose of insuring the severing of thin `strips of material.

The device of my invention may be vutilized when disposed upona surface such `as a table .top or the device may be used while held in the hand of the operator. The user first pre-determines the width of strips tobe sheared orfcut -froma source of supply of wood or other material. This isaccomplished byreleasing the thumb :screw 33 and slidably adjusting member 2| -until the index line 38 is in -registration with proper graduation 36 representing the width of 'the istrip'to vbe -ob- 4edge of the supply W in engagement with the k guiding face v4l. lThe resilient portions 43 of the 'stripretain-ing means are flexed in an upward difrection-,asviewedinFigure 4 to accommodate the rentranceofthe-ewood supply W. The curved portions5| -on;member 43 and the curved por- .tiOr 1s.55 on thebase plate |4 facilitate the entrance of the wood W into the device. The wood supply fis maintained in engagement with the guide face 4| as the wood is brought into contact with they euttingdges vof cutter 26. It should benoted ,that .the cuttingedges 2 are formed by bevel configuration, as indicated in Figures 3 and 4, so that the bevel tends to hold the yedge of-.the wood ;supply in;close engagement with the guidingface 4I while the..strip.40 is-being severed therefrom. V,'Ihusafter the .operator or user has started. the cutter.26 through .the wood supply, the angle or bevel..2|' of the cutter serves to thereafter urge .the wood. into contact with the guiding. face 4|'v during Ithe entire cutting operation .so that va uniform width of .strip is fashioned or-sheared from.the..supply W. It should be notedv that theexible member 43 renders the device adaptable to receiveblocks of woods of varyingnwidthsup .to athickness that will pass through the space betweenthe central ledges 53 formed. onmember 43 and the upper surface of the base ,|.4.

The device may-be used by placing the-same upona tabletop; .or ,other .suitable surface, holdingthe .device .against movement with vrespect to suc-h ,surface..and forcingthewood supply W through. the device AVEigures, .6 and .'7 illustrate rthe v`arrrfmgement of my vinvention vembodying a different form of shearingforeutting tool. yMounted .upon the projection .22'.and disposed withnthe recess 23 is a member rlliwhichis securedto the projection 22 by-agscrew 28'. The lower portion `of member 60 is, provided witha kerf6| which is of a width suitable to.-accommodate a circular cutter or whee1a62; having:.a,radial beveled portion 63 forming a-cutting-edge 6 4. lThe cuttingwheel 62 is suitablydournaled onfa stub', shaft V66 disposed in aligned openings provided in vthe yfurcations formed by thegkerf 6|. Inthe use offa circular cutterof theftypef'disclosed the plate |4 is formed with a concavity 68 to provide clearance for the cutting wheel 52. With this type of cutting or shearingtool, thessame-maymotate on the shaft B Sfduring strip shearinguor cutting operations.

. -While l the .frame construction and member y2 are illustrated as 4formed of-molded plastic, it is to be understoodthatthe construction may be made of-metalior other 'suitable material.

It is apparent that, -within the scope of the invention, modifications and different arrangements A`may abe :marie other than is herein disclosed,the present disclosure is illustrative merely, 'the inventioncomprehending Aall variations thereof.

What I claim is: v1. fIn combination; a vstripshearing device including a. frameiplateyhavingaprojecting ange;

said flange forming a guide portion; a member having a portion spaced from said frame plate; means cooperating with the iiange on said frame plate and said member for connecting said member and frame plate together; an element mounted upon said plate and slidably adjustable transversely thereof; a strip shearing tool removably supported upon said ele-ment and disposed in the space between said frame plate and member; a transversely extending groove formed in said frame plate to provide clearance for said shearing tool; means for securing said element in adjusted position; an arcuately shaped flexible plate connected intermediate its ends to said member for biasing the material to be severed into contact with the frame plate; and means including calibrations formed on said element and said member for determining the space between said tool and said guide portion to regulate the width of strip to be formed.

2. A strip shearing device including a frame formed of plastic material and having spaced uniplanar portions; the space between said uniplanar portions being adapted to receive a supply of material from which strips are to be formed; means including a flexible plate secured to said frame :and disposed within said space; said flexible plate being arranged -to engage said inaterial at spaced points for urging the same into engagement with one of the uniplanar portions of said frame; an element arranged for adjustment in a direction tranversely of the uniplanar portions; -a shearing plate of V-shaped form carried by said element and having two cutting edges projecting in the space between said uniplanar portions, and means for securing said element in adjusted position with respect to said frame.

3. A strip shearing device including a frame formed with spaced uniplanar portions; the space between said uniplanar portions being adapted to receive a supply of material from which strips are to be formed; a guide portion formed on said frame; means for urging material from which strips are to be severed intoengagement with one of the uniplanar portions of said frame; said means including a flexible plate having its ycentral portion secured to said frame, the portions of said plate disposed either side of the securing means being exibly biased to normally extend across the space between the uniplanar portions of said frame and adapted for engagement with the material from which strips are to be formed; an element slidable transversely of said frame; means for locking said element in adjusted position; a shearing tool secured to said element and having a cutting edge projecting into the space existent between the uniplanar portions of said frame and intermediate the ends thereof; the cutting edge of said tool being beveled on the side adjacent the guide portion to urge the severed strips toward the guide portion formed on the frame.

4. A strip shearing device including a substantially rectangular frame construction of U-shaped cross-section; a strip guiding surface formed on the frame; a shearing tool arranged within the U-shaped portion of said frame construction and intermediate the ends thereof means including an element transversely adjustable relative to the frame and carried by one of the leg portions of said U-shaped frame for supporting said shearing tool; the space between the leg portions of the U-shaped frame and bounded by the strip guiding surface being adapted to receive material from which strips are to be severed; and means including an arcuately shaped resilient plate secured intermediate its ends to the frame and engageable at its end portions with the material for urging the latter into contact with one of the leg portions of the frame during strip severing operations.

PHILIP H. UNSINGER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 142,584 Rice Sept. 9, 1873 673,375 Bayha May 7, 1901 1,315,128 Jacquot Sept. 2, 1919 1,463,312 Dillinger July 31, 1923 2,121,681 Bassett June 2l, 1938 FOREIGN PATENTS Number Country Date 137,031 Germany Dec. 16, 1902

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