US1821716A - Paper trimmer - Google Patents

Description

J. J. KUSIV PAPER TRIMMER Sept. 1, 1931.

Filed Jan. 24, 1930 2 Sheets-Sheet l INVENTOR. Jame s-lKusiv ATTORNEYS FIG. 8.

. l6 7 3y J k Sept. 1, 1931. us v 1,821,716

PAPER TRIMMER Filed Jan. 24, 1930 2 Sheets-Sheet 2 INVENTOR. Jameslffisiv /w fwx ATTORNEYS.

Patented Sept. 1, 1931 I PATENT OFFICE JAM S J. xnsiv, o nEwAnm nEw JERSEY PAP R TRIMMER Application area January 24, 1930. .Serial' No. 423,148.

i The present invention relates to an i m{:j proved cutter or trimmer for use n severing j paper, cloth or slmllar sheet mater al and the.

' .primary object of the invention is to provide an improved cutter or trimmer for severing sheet material thru a mere forward sliding motion of the device. o p

A further object of theinventionis to pro: vide an improved paper trimmer or cutter lofwhich will greatly expedite cutting and trimming of sheet material with little or no eflort upon the part of the operator.

,A further object of the invention is to prowvide a device of this character which] will sever the material on a straight clean out line.

A still further object of the invention isv to provide an improved paper trimmer embodying a pair of elongated runner bars between which the paper is disposed during the severing operation, and having means for. guiding the parted edges of the paper. in a straight line parallel'to the longitudinal axis f the runner bars. Q A still further object of the invention is to provide a novel and efficient device of this character whereby new or discarded safety razor bladesmay be employed as the [cutting device. Y i V 30. A still further object resides in'the novel construction of the device permitting of the same being formed from relatively simple stampings. r a

Other objects and advantages of the in vention will be apparent during the course of the following detailed description, taken in connection with theraccompanying drawings forming a part of this specification and ,in which drawings: Figure 1 is a side elevation ofthe trimmer and showing the same in condition for use. Figure 2 is a side elevation showing the lower runner bar or foot swung downwardly. V Figure 3 is a vertical longitudnalsection thru the trimmer.

Figure 4 is a top edge view of the trimmer. Figure 5 is a section on line 55 of Figure 1.

Figure 6' is a side elevation of a slightlymodified form of trimmer and showing a' .tion 5 and a minor or footportion 6 pivotally sheet material is guided to be severed by the power driven cutting" disc for use in cutting= soft or damp sheets of l paper, cardboard, i tracing'clothor any similar thinsheet ma- 1 terial. i

Figure 7 isat'op plan view of the trimmer shown in Figure 6.

Figure 8 is an enlarged fragmentary section showing the "manner of mounting the cutting disc and the drive means therefon I Figure 9 is a section on. line 9-9 of Fig. C 6 ure 7 In the drawings, and wherein'similar reference characters designate corresponding.- parts thruout the several views, the letter A may designate "the-form of trimmer provided with a fixed'cutting blade, and B the form' of trimmer provided with a power driven rotary cutting blade. M s

The trimmer A'embodies a main body porconnected at one end'to the body portion5. The mainbody portion 5is preferably formed from a light metal such as aluminum or the like and is preferably constructed from two sections"? and 8 as shown in Figure5 secured 7 together'by screwsorother suitable fastening elements9. The companion pair'ofi'sections 7 and 8 form'the longitudinally divided main body portion5 andare of such shape as to form an elongated shank portion 9having at its rear end theupwardlyoffset and rearwardly' extending handle portion 10.

The longitudinally divided shank portion 9 is provided with a straight bottom edge 11 and has its forwardend beveledandrear-[Q wardly inclined as at 12 defining a guide point 13'at the foremost end of the shank portion; As will be observed'in Figure 4;;

'this uide point 13 is disposed at the longitudinalcenter line'of the shank portion 9.

The forward end of the straight flat bottom edge lli'scurved upwardly at the lower ends f of the be'vels 12 as at 14to form theupper wall ofa flaring mouth 15 .into which the cutting blade 16.. H i I In the example shown the fastening 'ele- .ments 9 are in thefform of machine screws having counter-sunk heads seating flush in the section 8 and having threaded connection with the section a I a 7 Disposed about the shank of the machine screw extending thru the handle portion and the machine screw disposed at the forward end of the shank portion 9 are spacing washers 17 which serve for slightly spacing the sections 7 and 8. posed between the intermediate portions of r the sections 'T'and 8 is a relatively thinshim 18 a portion of which extends below the edge 11 forming a guide plate portion 19. This elongated shim 18 is secured in position by.-

the fastening element 9 connecting the intermediate portions of the sections 7 and 8.

The spacing washer 17 between the forward ends of the shank sections and the shim 18 between the rear-sections of the shank portion provides a thin slot 20 thru the shank 7 portion in which is received the thin cutting blade 16. The cutting blade 16in the example shown is a conventional type of 'double edge safety razor blade and which blades are formed with openings for mounting of the blades in the safety ra holders. It may here be Well to state that the shim washers.

17 'and'shim 18 are of a thickness equal to the thickness of the cutting blade 16 so that the thin bladereceiving slot 20 will snugly receive the cutting blade.

The shank portion 9 is provided at opposite sidesof the blade receiving slot2ti with aligning upwardlyand forwardly inclined keyways 21 for receiving the shank of a clamping bolt 22'which projects thru one of the openings in the blade 16 and has threaded thereon a wingnnt 23 which when turned tight on thebolt 22 firmly clamps the blade in an inclined positionbetween theshank sections. The blade 16 disposed in the slot 20 with its forward cutting edge extending in an upwardly and forwardly inclined relation tothe axis of the shank portion and with the rear edge of the blade spaced closely adjacent the forwardedge of the guide Plate portion 19 of the shim 18. Thebladc 16 of course projects below the bottom edge 11 of the shank portion.

A guard 24 may be provided for the upwardly projecting portion of the blade and this guard; may be ofU-formation having its arms insertable into suitable pockets 25 formed in the confronting surfaces of the shank portion sections adjacent the front and rear edge of the blade receiving slot 20. The guard may be removable or may hare its arms clamped in the slot 25. This clamp-H ing means for the blade 16 permits adjustment of the blade for disposing new portions of the cutting edge in a cutting position be neath theshank portion 9. I

It willhere be notedthat the side surfaces of the fiat cutting blade are in direct alignment with the side surfaces of the guide plate portion 12} and that the cutting edge of the bladeis in alignment longitudinally of the trimmer with the guide point or tip 13.

- portion 5.

The minor or foot portion 6 for co-acting with the shank 'portion9 for directing the sheet material to be cut to the cutting blade 16 is also preferably formed of alight metal such as aluminum or the like and is preferably formed in two sections divided longitudinally. "The companion sections 27 and 28 are joined by means of inachinescrews one of which designated at 29 arranged at the'rear end portion of the sections extends thruthe guic e'piate'portion 19 for pivotally connecting the foot portion to the main body a spacing washer 30 is arranged between theforward portions of the sections 27 and 28 "The elongated foot portion or runner 6 is formed with a flat upper edge 31 forconfronting relation with the flat lower edge 11 of the shank portion 9. The for Ward end of the runner is tapered as at 32 and projects-beyond the forward end of the shank portion 9 so that the upper curvature of the taper 'co-acts with the curvature 1% for providing the flaring mouth 15'. I The spacing of the runner sections 27 and 28 by the walsnerSO and guide plate 19 forms an opening for receiving the lower end of the blade '16 when the runner is in operative relation to the shank portion 9. The guide plate 19 may be notched at its forward end as at 33 to form a stop shoulder against whichthe intermediate attaching screw 29 i niayabut for limiting swinging movement of therunner toward the shank portion 9. This'liinited iii-ovement of the runner (5 forms a shallow guide way 34l between the confronting edges of the portions (5 and 9 thru wnich the paper moves and is parted by the blade 16.

l orined vertically thru the foot or runner 6 with its upper end disposed at, the cutting point ofthe blade 16 is an opening 35 preferably having a tapering upper endfas clearly shown inFigui-e 3 opening no the fiat upper edge 31'. This opening 35 serves to carry small particles of paper away from the cutting pointof the blade so as to prevent wedg-r mouth and alignthe guide point 13 with the line on which it is desired to sever the llaper. "Forward movement of the trimmer then moves the blade into engagement with the paper and as the paper is severed the part ed edges will be retained in the straight guide way 3% in engagement with opposite sides of the guide plate 19 so that the trimmer is guided in aperfectlystraight path. making aclean and straight out. l Because of the desirabilitylof having the blade 16 and guide p1ate'19 extremely thin for properly severing the sheet Imaterial be ing cut without rolling the cut'edges, it is preferred that the sectionsb and 6-each be formed of companion sections separable on a line longitudinally of the trimmer. This arrangement permits of the steel shim 18 being formed of a thickness no greater than j the thickness of the'blade 16. I

Referring now to the rotary cutter type of trimmer Bshown in Figures 6 to 9 111Ci11 sive, the trmnner ncludes the main 1 body together by means of suitable machine screws 46. v V up Journaled at its 611ClS1I1 suitable bushings 47 and 48 mounted respectively in the shank sections 43 and 44 is a shaft 50. Secured by apressed fit to the central portion of the shaft 50 is a bevel gear 51 -fitting in apocket 52 provided in the inner side of the shank section 48. Fitting also on the shaft 50 in abutting relation with the bevel gear 51is the cutting disc 42 which is held against rotation on. the shaft by means of a preferably round 7 nut 53 having threaded connection upon the shaft. The nut 53 is disposed in a' pocket 54 provided at the inner side of the shank section 44. The gear 51 abuts with the .bush- 48 for preventing"longitudinal shifting of the shaft 50 andretains the cutting disc in alignment at the longitudinal center of the shank portion 45. The cutting disc 42 is of such diameter as to project below the lower edge of the shank portion and extend into the runner 41. It may here be well to state that the r'uner 41 is of identicalconstruction as that of the runner 6 shown and described in Figures 1 to 5 inclusive.

The portions 40 and 41 are 10inedby a shim having the depending guide plate por tion'56t'o which the portion 41 is pivotally connected by thecombined pivot-and cons necting screw 57. lhusit will be seen that the rotarycutting disc 42 is in direct align-V ment forwardly of the guide plate portions 56, An arcuate guard 58 is preferably dis: posed over the upper exposed portion of the cutting disc 42 and maybesuitably secured a body-portionincluding an elongated shank v,

at its ends'to the shank portion 45.

The gear 51 niesheswith-abevel pinion 6O suitably journaled in a bushing 61 thru which a flexible drive shaft 62-extends for connec- 1 tion with the bevel pinion. This fleXible drive shaft 62 extends 'rearwardly thru theldivided handle portion-63 and at the rear end of the handle portion may be suitably connected with a flexible drive shaft64 operated in any desired manner.

This power driven cutting disc will be found especially well adapted for use in cut-' ting soft ipaper'such as blotting paper, news- 7 paper and the like, and will also'be found especially well adapted for cutting .da mplblue print paper,blotting paper, cardboard, tracing cloth,or"any similar thin sheet material.

. XVhileboth forms of trimmer A and B are primarily intended, for use in cuttingandl trimming blue prints by merely pushing thev trimmer along a line on which it is desired to sever thepaper, itwill'readily be apparent, V that'thewtrimmers maybe -used for cutting various kinds 'ofsheet material. From the foregoing it willfbe observed thatv an'iimproved construction for paper trlmmers hasbeen disclosed whereby. the paper may be severed on a straight clean cut line-withoutrequiring a straightedge or linealong which athe trimmer may be guided for. producing,

a straight cut. It will also be apparent that with a trimmer such as disclosedy-the paper or other sheet materialissevered thru merely I push ng the device across the paper andpermits-of the paper being 01117111 an easymanner.

Changes in detail maybe: made to the forms of invention herein shown I and described,

without departinglfrom the spirit of the invention or the scope ofthe following-claims. I claim: I I I i i l. A paper trimmer comprising a main body portion including an elongated shank,. v V an elongatexil runner disposed in parallel rela ing 47 and the nut 53 abuts with the bushing" tion beneath theshank, a thin web connecting the rear portions of the shank and runner in. slightly spaced apartrel'ation andproand runner; forwardly of the web and having its side surfaces in alignment with the side surfaces of the web.

2; A paper trimmer comprlsing a main body portion including an elongated shank having a straight under edge, a guide plate depending from the rear lower portion of:

the shank at the longitudinal center thereof, 7

an-elongatedrunner mounted: upon the guide plate and having a straight :upp'er. edge'pars allel to and slightly spaced beneath the" straightledge of the shank, and a cutter carrie'd by the shank in alignmentat the forward 3. A paper trimmer comprising a main end of the guide plate in alignment longis tudinally of the shank with the guide plate.-:

portion having a straight under edge and a guide plate depending. from the rear portion straight lower edge of the shank portion, and

a'flat cutting blade extending across the spacing between the shank portion and runner in alignment between the guidepoint and,

guide plate.

4. A paper trimmer comprising a main body portion including an elongated shank portion having a straight under edge, said shank portion having a beveled forward end forminga guide point at the longitudinal center ofthe shank, a flat guide-plate carried by and depending from the rear portion of the shank, arunner pivotally connected at its rear end to the guide plate and having a straight upper edge for movementinto spaced I parallel relation to the lower straight edge of the shank, and an inclined blade extending between the shank portion and runner at the forward end ofthe guide plate in alignment longitudinally of the trimmer between the guide'point and guide plate.

5. A paper trimmer comprising a ma1n body portion including. an elongated shank portion having a beveled forward end providing a guide point, a guide plate depending 'from therear portion of the shank portion in alignment longitudinally of theshank with theguide point, a runner pivotally connect-ed at its rear end to the rear portion of the guide plate and extending longitudinally beneath the shank portion, said runner having a tapered forward end projecting beyond the forward end of the shank portion, and a cutting blade carried by the shank portion at the forward end of the guide plate in alignment between the guide point and guide plate.

6; A paper trimmer comprising a main body portion including a shank portion a guideplate depending from the rear portion of the shank portion, with its side surfaces in a planelongitudinally of the plate portion, a runner pivotally mounted at its rear portion upon the guide plate for extending longitudinally beneath the shank portion, a

cutter carried by the shank portion in align-.

ment forwardly of the guide plate and having its forward cutting edge extending into the runner, and an opening formed thru the runner at the cutting point of the cutting edge. I

7 A paper trimmer comprising a main body portion including a shank portion having astraight under edge and a guide point at its forward end at the longitudinal center of the shank portion, a flat guide plate depending from the rear, portion of the shank, an elongated runner pivotally mounted at its rear-end upon the rear portion of the guide plate and having a straight upper edge for confronting relation with the straight under edge ofthe shank portion, means limiting upward swinging movement of the runner toward the shank port-ion to provide a paper receiving guide way, said guide plate when the runner is in operative relation to the shank portion extending into the runner, and

a blade carried by the shank portion at the forward end of the guide plate and extendinginto the runner,said blade being in alignment between the guide point and guide shank portion.

9. A' paper trimmer comprising a main body portion including an elongated shank portion having a vertical slot therethru, a plate depending from the shank portion rearwardly-of the slot, a runner pivotally connected at its rear end to the plate for extending longitudinally beneath the shank portion, a double edge blade extending thru the slot in alignment with the plate and projecting above and below the shank portion, a guard carried by the shank portion and extending about the upper projecting end of the blade, and a clamping bolt extending thru the shank portion for adj ustably and removably retainingthe blade in 'the shank.

10. A paper trimmer comprising a longitudinally divided main body portion including sections forming an elongated shank portion,means connecting the sections in slightly spaced relation, a shim plate connected between the sections at the rear of the shank portion and having a depending portion providing a guide plate, a longitudinally divided runner embodyingseparable sections pivotally connected at their rear portions to the rear portion of the guide plate, and a cutter mounted between the sections of the shank portion in alignment forwardly of the shim and having its lower end extending between the sections of the runner.

11. A paper trimmer comprising a main body portion including a shank portion and a handle portion, a runner extending longitudinally beneath the shank portion, a thin web connecting the rear portion of the shank to the rear portion ofthe runner and forming a paper receiving guide way between the shank andrunner, a cutting disc rotatably mounted in the shank portion in alignment forwardly of the web, and drive means for rotating the disc embodying a flexible drive shaft extending longitudinaly thru the handle portion.

12. A paper trimmer comprising a main body portion including a shank portion and a handle portion, a runner extending longitudinally beneath the shank portion, a thin Web connecting the rear portion of the shank to the runner, a shaft rotatable in the shank portion forwardly of the Web, a circular cutting edge afiixed to the shaft and disposed in alignment forwardly of the Web, a bevel gear aifixed to the shaft, a bevel pinion meshing With the bevel gear, said gears being enclosed in a pocket formed in the shank portion, and a flexible drive shaft connected with the bevel pinion and extending rearwardly to the rear end of the handle portion.

JAMES J. KUSIV.

Images