Патент USA US2406094код для вставки
Aug._2o, 194s. ' J. M. MiLLER 2,406,094 ‘ KNIFE AND SGISSOR SHARPENER Filed May 1'7, 1945 INVENTOR! TIM/‘Tiller a; 926M164.‘ ATTD RN EYS _ Patented Aug. 20, 1946 ‘2406,1194 UNITED STATES PATENT OFFICE , 2,406,094 7 KNIFE AND scrssoa SHARPENER Joseph M. Miller, Littleton, 0010., assignor to J. D. Cochran, Grass Lake, Mich. Application May 17, 1945, Serial No. 594,187 1 Claim. (CI. 76-87) 1 2 My present invention has reference to a sharp ening device of the type in which two pivotally supported discs are employed and which discs closed by my drawing. With my improvement it is impossible for the discs to spring apart, and, therefore, the discs positively act upon the cutting edge of the knife so that the cutting edge of the knife is effectively sharpened by drawing are designed to have drawn there-between the blade of a knife or scissors to be sharpened and the object of the invention is to simplify and the same between the discs and as the discs are pivotally mounted the pressure of the knife be materially improve this type of knife or scissors tween the said discs will cause only a slight turn sharpening devices. ing of the said discs and such pressure also tends The invention, therefore, resides in the con struction, combination and operative association 10 to force the discs toward each other and not to spread the discs, and, therefore, into tight bind of parts such as will hereinafter be de?nitely set ing and grinding action against the edge of the forth in the following speci?cation, speci?cally knife. set forth in the claim and illustrated by the ac The base I and associated parts, with the ex companying drawing. 15 ception of the steel discs are made from one piece In the drawing: and bent to form the device as illustrated. Fig. 1 is a plan view of the improvement. Fig. 2 is an end view thereof. Fig. 3 is a side view thereof, with a knife K in The discs can be changed when worn, thus prolonging the life of the sharpener. ' The scissors guides are shown off center of Fig. 4 is a plan view thereof, with a pair of 20 the discs to retain the proper bevel for the cut ting edge, and the action is repeated for each scissors S in operative position. operative position, and The improvement contemplates the employ blade of the scissors. ' The space H between the knife guides 6 and ment of a triangular metal base i which ‘is de ‘I is shaped to conform with the shape of the signed to be ?xed on a suitable support. The base, at one of its corners, is notched, as at 2, 25 knife blade. The base I is provided with an opening [2,’ to and the sides, adjacent the said notched corner permit the base to be fastened to a suitable are preferably integrally formed with upstanding support. sides or ears 3, respectively. The ears 3 are pro It is to be understood that my invention is vided with parallel scissor guide portions 4 and 5 respectively, and the ends thereof are upwardly 30 susceptible of various changes in its form, pro portions and minor details of construction, and extended to form knife guide portions 6 and 1., I reserve the right to make such changes as prop respectively. There is pivotally secured on the erly fall within the scope of the appended claim. inner faces of the ears, preferably by machine Having described the invention, I claim: screws 8, the sharpening discs 9 and I0, respec A knife sharpener comprising a substantially tively. It is to be noted that discs 9 and H] are 35 triangular base having one of its corners notched not arranged in spaced parallel overlapping rela and its sides, adjacent to the notch formed with tion nor are the inner corners at the peripheries upstanding ears aligned angular scissor guides of the discs disposed in slight contacting engage formed integral with the upper edge of said ears, ment as is true for instance with respect to the patent to R. J. Dearborn, No. 1,069,768,, but the 40 and spaced from each other at the ends thereof, upwardly extending knife guide portions extend periphery of the disc I0 is closely adjacent the ing upwardly from the ends of said guides and inner face at the periphery of the disc 9. shaped on the inner sides thereof to conform to The angular relation of the discs is the vital the shape of a knife to be sharpened thereby, feature of my construction. By this arrange ment the cutting edge of the knife cannot spring 45 a sharpening disc pivotally secured to each ear, and the periphery of one of the sharpening discs the discs apart which has been found true with being in close proximity with'the face of the respect to the Dearborn and also with respect to other devices wherein the cutting discs are not ‘ arranged at the same relative positions, as dis cooperating sharpening disc. ‘ JOSEPH M. MILLER. '