US1477488A - Knife sharpener - Google Patents

Description

Dec. 111

C. J. HOLLAND KNIFE SHARPENER Filed Sept. 18. 1922 INVENTOR a QC fioZZarza.

WITNESSES ATTORNEY Patent Dee. Bil, EdZd.

UNET @T? JJQHN HKJLANID, OF PATTERSON, IDAEIU.

KNEE SHARPEE.

Application med Qeptember 18, 1922. Serial Ito. 5%,991.

To all whom it may concern:

Be it known that ii, Gimmes JonN Hon- LAND, a citizen of the United States, residing at Patterson, in the county of Lemhi and State of Idaho, have invented new and useful Improvements in Knife Sharpeners, of which the following is a specification.

This invention relates to metal tools, and more especially to Sharpeners for cutting tools; and the object of the same is to produce a knife blade sharpener carried by a box which is mounted removably within a recess in the handle adjacent the heel of the blade so that when the box is in place the contour of the blade is uninterrupted, but

when the sharpener is needed the box can be instantly removed from the recess and reciprocated along the edge of theblade. Details will appear in the following specification, reference being made to the accompanying drawing wherein Figure 1 is a side elevation of this device complete, and Figure 2 is a similar view with the box removed from the recess in the handle. and applied in position to sharpen the blade.

Figure 3 is a sectional view on the line 33, of Figure 1, thru the handle, and an end elevation of the box slightly removed from the handle and itself partly in section to show how the sharpening stones are held in place.

Figure 4: is a plan view broken away.

Figure 5 is a bottom plan view of the handle, illustrating at one side the recess therein and being partly in section at the other side.

In the drawing, 1 have used the letter B to designate a blade of the knife whose shank or tang T is preferably integral with the heel of the blade and stands on edge in the planethereof, and I have used the letter H to designate the wooden handle into which said tang is projected in the usual manner, the knife shown herewith being an ordinary butcher knife, altho I do not wish to be limited in this respect. In contour, handles of this kind are usually rectangular and with their corners slightly beveled off, and the broad idea of my invention is to cut away the lower side of the handle next the inner end or heel of the blade to produce a recess (shown em ty in Figure 2) which recess is normally lled by a member that I call the box whose contour is such that of the box, partly it fills out the recess and preserves the exterior configuration of the handle when the boxis in place, so that at this time its presence will hardly be noticed. The box is merely a carrier for the shar ening devices proper, which project inwar into a longitudinal groove or channel in the upper side ofthe box, and fastening devices are provided to hold this box in place.

, Coming now to the details as shown illustratively in the drawing, the recess 1 best seen in Figure 2 removes the wooden ortion of the handle for about one and a alf inches from its front end, and from its lower edge upward a suliicient distance to expose the tang T of the blade which therefore projects down into the transverse center of such recess and constitutes a fin as seen at T in Figure 3, and at either side of this fin the remaining porton of the handle constitutes a downwardly facing shoulder 2. Into this shoulder at its mid-length is cut an opening 3 whose lower end is partly closed by a strip 4: which is secured to the face of said shoulder 2 along its outer edge. Above this strip the opening extends longitudinally within the handle as seen at 5, and within such extension is mounted a spring 6 having at its free end a button 7 which projects laterally outward thru a hole 8 in the side of the handle directly above the opening 3, and the outer ends of the buttons may well simulate the rivets which ass elsewhere thru the handle and tang or holding the blade in position in the handle, as well understood; otherwise everything thus far described is concealed.

The recess 1 in the handle is normally filled out by a box 10 which may well be of wood if the handle is of wood, and whose size and exterior configuration conform accurately therewith, and this box has a V- shaped channel 11 throughout its length as best seen in Figure 3, adapted to receive the tang or fin T when the box is in place. Each wall of said channel contains a recess 12 of less length than the box and adapted to contain the grinder or sharpener proper 13, which isof stone, carborundum, or the like, held in its recess by a longitudinal strip 14 removably mounted over the recess and secured to the upper face of the box by screws 15 or the like. It is obvious that when these are withdrawn and the strips removed, the stones can be taken out of place in their recesses for washing, grmd- 7 body; and the length of the exposed the box carriesan outwardl ing, or-replacement if they-should become worn;'but when they are replaced their inner or active faces project slightly into the channel 11 and converge downward toward eachother, so that when this sharpener as a whole is applied to the edge of .the blade as seen in Figure 2 and moved longitudinally thereon, the same will be sharpened in a well-known manner. At other times the box fills out the recess 1 in the handle,-and the fin T'projects into" the channel llbetween the. stones so that the active faces of the same are well protected from dirt and grease.

The fastening means for holding this'box in place is shown herein as duplicated at oposite sides of its channel, and is perhaps est illustrated in Figures 3 and 5. The numeral 20 designates a spring tongue whose lower end is seated in the body of the box just outside the strip 14, whose body above facing catch 21 having an abrupt lower ace and a beveled upper face, and whose upper extremity or tip 22 is again straight in line with its ortion of this tongue is such as 'to cause it to substantially fill the depth of the opening 3 in the remaining portion of the handle. When now the separated parts as seen in Figure 3 are brought together by raising the box, the tongues pass upward into the openings, and their catches 21 ride by the inner edges of the strips 4'so that the abrupt lower faces thereof engage over said strips just at a time when their tips 22 stand opposite the free ends of the springs 6, or in other words, opposite the buttons 7. Now the tongues spring outward, and the box is latched to the handle.

When it is-desired to employ this sharpener, the operator asses his thumb and finer astride the re uced portion of the hanle and bears on the two buttons 7. This presses them inward as their springs 6 permit, and the tips 22 of the tongues are borne inward so that their catches 21 disengage the strips 4. Then with the other hand he grasps the box and moves it downward out of the recess 1, after which it is carried forward and reciprocated along the edge of the blade B to sharpen the same in a manner which will be clear. After said use it is replaced, and by simply pressin it upward from the position shown in igure 2, its 5 ring tongues engage the openings 3 and t eir catches re-enga e the strips 4 so that the box is latched to the handle and fills out forth.

the contour thereof in manner which will be clear. I do not wish to be limited to the sizes, sha es, proportions or materials of parts, an details may be modified to suit the convenience of the manufacturer and the -desire of the public.

jacent the heel of the blade, and atang on the latter projected into the handle and exposed within said recess; of a knife sharpener, a box of substantially V-shaped'internal configuration to receive said tang and of an exterior configuration to fill out the recess in and complement the external configuration of the handle when in place, and means for detachably holding the box within said recess.

3. The combination with a tool and its handle, the latter having recess'in its lower edge defining downwardly facing shoulders, and said shoulders having openings, and strips partly covering the mouths of said openings; of a tool sharpener, a box containing the same and of a contour to fill out said recess, and spring tongues rising from said box at points to enter said openings and having catches adapted to engage said strips.

4. The combination with a tool and its handle,'the latter having a recess in its lower edge defining downwardly facing shoulders and said shoulders having openings, and holes from the openings to the sides of the handle, strips partially covering the mouths of said openings, and spring actuated buttons mounted in said holes; of a tool sharpener, a box containing the same'and of a contour to fill out sald recess, and spring tongues mounted in said box and rising therefrom, each having in its projecting portion an outwardly extending catch ada ted to engage over one of said stripsand a ove the same a tip adapted to come opposite the corresponding button, for the purpose set In testimony whereof I afiix my signature.

CHARLEY JOHN HOLLAND.

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