US1591047A - Blade holder - Google Patents

Description

H. l.. MoRsEv July s, 1926.

BLADE HOLDER Filed' sept. 2e,

@y ffm? Patented Julye,Y 1926,

'tranny L. molesti, or wnsTfRoXBUnYLnrAssAorrUsErTs f' 1 Application neuestem-berne, w24-...sensi No1/*740;o45-i l lThis invention'relatesltofcutting devices i `particularly useful for; ripping' seams in fab'- ric goods', although alsou'seful asa scraper for scraping paint or 1 varnish from surfaces 5" and kfor other purposes "requiring v azkeep,

sharply edged bl'ade.f; v I f y Y Objects of the invention areto provide a simplecutting device kiny which' the sharp edgefof'thefcutting blade-is normally pro'-l` t'ected and which isl constructed .in 'such'a manner thatthe 'blade'may be moved to cut-` ting position without the necessity'of being handled by the'user'; and ft'o provide' after described. l f

The invention comprises a holder whichis lcrfinstructed to'receive a blade having a held in inoperative or non-cutting position'.y Preferably a camfifsfarranged to engagethe blade in 'suchl a Linaner that 1movenient` of the cam in -on'e *direction advances thesharp' edge of the blade" to cutting position and the blade .togsuchfap'ositionthat the sharp edge is prot'ectedk --It' will be Vevident that such a device isi extremely useful lfor ripping seams inv fabric goods,4 scraping paint o r varnish from "furniture, or removing 'paint vor other spots from glass, and for otherand varied purposes and may. conveniently be handled N'and carried from place 13oplace` Vwithout'danfgerto the user'of beingcu't yby thesharp edge of the blade. Furthermore, in accordance with Vthis invention a cutting device may be vconstructed 4at a relatively lowl V*-inanufacturing cost' becausevof its extreme be apparent. l v f "f The 1invention is shown by way of illustration vin the 'ac cfcxmpa'jnying''V drawings in trated. the holder: A i-s made Afrom a single piece Vof relatively thin', stiff, `and resilient sharp"y cuttingfe'dg`e a blade `being normally movementv in the oppositeA direction retracts f by 'stamping fout, a str1-p: of; suitablev dimensions a-ndlbendingl it; upon itself to form, op;

simplicity of construction as willhereina'fter sheet metal folded itself to y and rear sides; or iiaps l and2 respactively,` the free edges of f which-arieeven and fp ar-g form a spring; hin-gen)y which serves tio-hold.

theside yflaps .1 and 2together .for an- .f 4' vother purpose hereinafter described. y V'llhefront Hap 1 is slitor punched to form an actuator 4 in the form ofa tonguegwhich normally diverges fromithe flap 1,-the,.jslift extending a slight distance-in'the'flap 2 as allel.v The 'fmetal Yin the region of :the fold f 1s forced outwardly as b'ya vdie inorder to i indica-ted in Fig. 2 in orderto obtain-.maXi- 'mum Vresilience and forf the purpose-of,

strength.l I `rItwill be observed that thevslit -V 1 is made a'substa-ntial distance from the sidesV ofthe iiap's so that the connection between the'fl-apsis sturdy andcapable lof resisting distortion-tothe 'maximum degree.` v

Secured to the :inner face of the actuator l4 are apair of offset'ears or cam Vmembers which. are linclinedfnipwardly, toward spring 'f hinge 3 and are arranged to vextend structed -of--sheet-'m'etal and `maybe'fortified posed sides''and 8; thefree/ endsextending through apertures iintheiiap 1 'and'y bent }toward each other-'upon'.the 4vflap to 'hold the lug securely Iin place.l For strength'eningV purposesfthemetal is bent 4on opposite rsides `throughsubstantiallyrectangular apertures Y 6 in the flap` 2; The.lugs-5z are` likew ise-condo to `form flanges 9., so that thelugsare capable Y f of withstanding hard usage.v *lt 4will beobserved that the' sides 7 and. 8V arenot parallel, and as will hereinafterlbe described the side 8 serves to ladvance the blade andthe'sidej'lk serves to retract the,bilade. V

lugs rfr'omfthe apertures a blade 1 0 may be `inserted into the holden The particular are positioned to extend; through twofofthe apertures lli'n the blade; and in the normal separating the flapsfl vand moving `the actuatorto withdraw the l blade 10 show-n is ofwellfkno'wn Vconstruc'- i tion ordinarily used in safety razors andis @provided with spacedapertures llnand a -lylthin and iiexible'and y admirably serves as i l a seam ripper or scraper, being used as lsuch in many places. K lis/indicated,Y the lugs 5 5,

position of the actuator 4 the cuttingedge of the' blade is held in retractedornon-cutting position, the outer end portions of the side 7 of tlie lugs bearinglagainst the upper side of the apertures 11 of the blade. ItV

`said holdeiyand spring means arrangedjto Y will'be evident that in this positionk the de- *ting edge. v v Y v*When the user wishes torusethe cutting kvice can be carried without dangerV to the userof being cut byv a projecting sharp cutedgeof the blade the actuator 4 is depressed toward the sidev flap l in order Vto'force the lugs V5 well into the aperturesfintlie side flap 2. -Owing to the inclination ofV the lugs 5 the sides Sthereof bearing against the `lower sideoftheholes 6 in the blade force the cutting edgeY beyond the adjacent edges ofthe flaps 1 and2 as shown in Fig. 4. -As

Y soon as the user releases the pressure on the actuator 4 the spring vhinge1 automatically returns the actuator to normaly position therebylretracting the'cutting edge of the Yblade within the holder."V The devicey is shapedto it into a comfortable position in thetusershand Vso that it can be used for an extended period of time withoutdiscomfort. Y Although I havey shown andV described but on'eform of the invention it will be understood'that many changes in detailsof con-v 5 Ystruction andY arrangement mayV be 'made without departing from the spirit ofV the invention. Y Y

Iclaim:-V f f Y A f ,1. A device 'of the'classdescribed com'- prising a protectiveholder or sheath, a

blade4 within the holder, the blade havingasharpfcutting edge `normally retracted with'- in the holder, and means 'actuatedby the pressure of the lingers of the user in grasp-V v ing V,the holder to advance'the cutting edge of the blade into` operative position beyond the-holder and for retracting the cutting edgeof thebladey to normal. position when the pressure of the ngers is relaxed.

2.`A V'device of thev class'` described comprising a protective holder or'sheath, a blade within the holder, the blade having a sharp cutting` edge normally concealed within/the sheath, means actuable by the pressure of the fingersof theuser in grasping the holder for advancing the cutting edge of the vblade Vinto operative:V position beyond the holder, rand spring means associated with the cutter advancing means for automatically restoring therv blade to fitsl normal in'- operative position when the pressure offthe Y fingers is relaxed.

'3. A cuttingfde'vice comprising a protectiveholder, a blade `having a'cuttingY edge Vin said holder, and cam means for advancing vsaid blade to'bring the cutting edge thereof beyond'the adjacent edge of said holder, said'means being-actuated automatically to retract said bladeraway fromA the edge of theholder. Y

4. Acutting device` comprising va protective holder, a bladehaving a relativelythin lcutting edge in said. holder, cam meansfl'or. advancing said blade to bring the cuttingV edge thereof beyond tlieadjacent edge of return said cani means to normal position,

thus to retract said blade within the edge of the holder.

Y5. A cuttingdevice comprising a protective holder consistingofv a pair of separablev elements, a blade having a relatively thin cutting edge between said `elements,fcam

meansV for advancing said blade to bring theV cutting edge beyond the adjacent edges of said elements and retracting-said bladeV` from cuttiiigedge between said elements, a spring controlled actuator associated with'said ele ments, and cam-means .Onsaid actuatorfor advancing and retracting said blade relatively to said elements, whereby when said 'actuator is pressedv toward said elements the cutting'edge of said blade is advancedvto vcutting position and when pressure thereon is released said cuttingedgeis automatically Aretracted between said elenientsto non-cutting position.

l 7. A cutting devicecomprising a'pair of vconnected plates, one ofsaid plateshaving an aperture, cam means associated yvvithjone plate movable to extend into`s'aid aperture,

and a relatively thin cutting blade between said plates having an aperture through which saidy cam means also extendswhere-V by when said cam means. is moved in one direction intoboth of the apertures the .cute

ting edge of the blade is advanced beyond the adjacent edges of said plates andmovement of said cam means in the opposite` direction retracts the cutting Vedge between the edges of said plates. p. j A j 8. c A cutting device comprisingay pair of connected plates,'one of saidplates havingV an aperture, cam means Aassociated with said plates movable to extend into saidaperture.

Y a relatively thin cutting'blade between said plates having an aperture Y*to receive YVsaid cam means, and spring means associated,V

withY said cam means forl holding thelatter in retracted position Vwhereby Ywhen said .camv means is moved into bothof the V.apertures the cutting edge'of the blade is advanced beyond the adjacent edges of said plates and when pressurejis 1'released said spring means movessaid cam means in the' opposite kdirection thereby retracting the` Y vcutting edge rbetween thel edges ,of .said plates.

cutting device comprising yafpairY of plateshaving registeringopenings, an actuator associated with said plates, Vcam means Aen said actato arranged to extend-lint() plates 'andrnoielnentjefvjtlie 'actuator' the l l i l* f said openings, a thin cutting blade between opposite dreton retractsthe cutting` edg'ef1-f` vsaid plates having an'apertureaganst the vaway from the'ed'ges of the' plates. l :y 10 ,p sides of which said cam means bears, where- Y Signedv `by me at' Boston, lYIassaehusetcs5l e L by When said. 'actuator is movedfrtowafr'd said this 22nd day ofSepteInber1924:. plates the cutting Vedge of the blade. is ad# 1 1 vanced beyond the adjacenbredges of the 4 l' HARRY L.

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