US1558187A - Knife sharpener - Google Patents

Description

D. LAMBERT KNIFE SHARPENER 7 Filed Nov. 15. 1923 hppiicatlor filed. Wave-inner .15, 135123.

all whom it may co-ucem-s Be it known that l, Dnvrn LAMBERT, a citizen of the United States, residing at Cleveland, in the county of Cuy'ahoga and State of @hio, have invented certain new useful Improvements in Knife Sharpeners, of which the following is a specification. V

My invention relates to improvements in knife Sharpeners, the present embodiment of the inventibn being particularly designed and adapted for use in quickly sharpening kitchen or household knives or various 0' and types.

The primary object is tit provide a generally improved knife shar llener, which will be exceedingly simple in cohstruction, cheap of manufacture and efficient in use.

A further and Try important object is the provision of an improved form and ar-' rangenient of sharpehing discs extending toward each other in overlapping relation and conjointly forming a V-shaped article receiving and sharpening recess, said cutting or sharpening discs being arranged in gangs and loosely mounted on gang-axle shafts so that the same are adaptfii jtdbetilted or canted on such axle shafts to present one edge or the other of the sharpening discs against the article edge to be sharpened in accordance with the direction in which the article edge is drawn.

A further and important object is the provision of loosely mounted and spaced cutting and spacing discs adapted to move or creep around the axle shat-t circumferentially us being operated upon by the article being sharpened, thereby presenting variable cutting edges, the knife edge sharpening or cutting discs being of suitable tempered steel and ground-to a perfect cutting edge and being adapted to be removed for re-grindi-ng when dull.

With the above mentioned and other ends in v'ew, the invention consists in the novel construction, arrangement and combination of parts, hereinafter described, illustrated in one of its embodiments in the accompany ing drawings, and particularl pointed out in the appended claims.

Referrin to the drawings, forming a part of this specification. Figure 1 is a side eleration of a knife sharpener constructed in accordance with this invention Fig. 2, a cross sectional view of the same. taken on line 2-2 of Fig. 1.

Fig. 5, an end elevation of a set of loosely; mounted sharpening discs and a supporting 'ilarged top plan V ew or a. pan;

sharpening discs canted axle, detached from the supporting frame or" holder therefor.

Similar numerals of reference designate like parts drawings.

The improved able support or holder carrying a pair of gangs of loosely mounted overlapping cutring or sharpening discs forming an article throughout all the figures of the receiving and sharpening recess and loosely mounted on suitable axle members so that the same may betilted or canted to present their edges at acute angles to the ed e of the article to be sharpened as the latter 1s drawn over said cutting edges of-the disc s, as hereinafter fully referred to.

The support or holder may be of any suitable and convenient construction, said support, in the presentinstance, comprising a suitable base 1 adapted when in use to rest upon a suitable support, such as a table, shelf, or the like, said supporter holder in cluding spaced bearing members or brackets 1, adapted to receivt and carry suitable hear ing members or axle shafts 1 The axle members it may be fixed or secured in the bearing members 1 in any suitable and convenient manner, as for example,-by means of rivet heads 1 and smaller upset heads 1. In the present instance, the brackets 1 and base 1* are connected by end walls 1, thereby forming a receptacle for the sharpening and spacing discs, mounted and arranged as hereinafter referred to, and adapted to receive and carry the cuttings and other foreign substances arising from the sharpening operation. In the present instance, the receptacle forming base or support is pro-' vided with a handle, 1, but it Will be understood that the support may be permanently secured upon a table or shelf in any suitable or Well known manner.

As a means of enabling the cutting or sharpening discs 2, to be tilted or canted sharpener comprises a suit- "as well as leavingsuch discs fill 'ing gangs of loosely mounted in their active knife sharpening operation, free to creep around the shafts 1 to thereby present variable cutting edges, the. sharpening discs 2 are provided with openings '23 somewhat larger than the bearing shafts 1, as shown most clearly in Fig. 5 of the drawings, and as a means of holding the sharpening discs 52in proper spaced relation to each other, suitable spacing discs 3, are provided, said gangs of discs 2 and 3 being of an aggregate thickness or cross dimension of considerable less than the dimension of the space between the bearing brackets 1, as shown most clearly in Fig. 2 of the drawings. The spacing discs 3 are likewise provided with hearing openings of larger diameter than the axle members 1" and it will be seen that the sharpening discs 2 extend toward each other in overlapping relation and conjointly form a V-shaped article receiving and sharpening recess 4, a somewhat similarly shaped but larger recess 1 being provided in the support between the bracket members 1, as

shown. 1

The outer peripheries of the sharpening discs 2 are preferably ground so as to present relatively sharp cuttim edges 2 against the cutting. edge of the article 5 to he sharpened when the latter is drawn over such cutting edges, as shown most clearly in Figs. 3 and 4; of the drawings. For example,-when the article 5 is drawn in the direction of the arrows the sharpening discs will be tilted. or canted as there shown, thereby presenting the outer peripheries or cutting edges 2 at an acute angle to the cuttingedge of the article being sharpened, and it will he understood that if the knife or article being shar' ened is reciprocated or drawn in reverse direct-ion to that shown in Figs. 3 and l; of the drawings, the cutting discs will be tilted or canted in reverse direction, brin ing the opposite cutting edges 2 into action.

Having thus described one of the ernbodimerits of my invention, Without having at tempted to set forth all the forms which it may be made, or all the modes of its use, what I claim and desire to secure by laetters Patent is,-- I

1. In a knife sharpener, support, and

of spacing and overlapping sharpening discs loosely. said support with their edges at acute angles to the surface of the article being treated.

2. In a knife sharpener, a plurality of loosely mounted spacing and sharpening discs the latter being arranged in overla ping wohbl ing relation transversely of their anes to present acute article sharpening edges.

3. In a knife sharpener, a support carryspacing and overlapping sharpening discs laterally oscillatory on their axes thereby presenting their mounted and cantahie on edges at acute angles to the edge of the article being sharpened When moved to one:

extreme position or the other byvljlhe move ment: of the latter.

4. In a lmife sharpener, a pluiiality oi spacing discs and a plurality of overlapping sharpenin discs-between said spacing discs having tieir peripheries ground at right angles to their longitudinal planes and means for axially supporting and permitting said discs to be rocked thereby presenting said peripheries at acute angles to an article being sharpened.

5. In a knife sharpener, gangs of loosely mounted overlapping sharpening discs including disc spacingcleinents forming an article receiving iecess'and loosely mounted and tiltable with their edges at acute an ice to the plane of movement of the article being sharpened.

6. In a knife sharpener, spacing discs, and

overlapping sharpening discs having their peripheries ground at right angles to their longitudinal planes and means for supporting said discs in gangs and permitting the same to be canted by the article being sharpened bringing said peripheries at acute an gles' to the plane of movement of said" article.

'4". In a knife sharpener, a support including axle shafts carrying angs of .oseiy mounted spacing and overapping ing discs forming an article receiving recew said discs being provided was hear-i open-- ings, larger than said axle pawl tting said discs to have a limited rec-hing motion,

thereby p s their at neutral? gles to the edge of the article to sharpened as the latte over sail l arpen r, supporti 8. In a hm I s sn discs having enlarged nea ing said axle shaits permitting sa oscillate axially on said axle sharts and senting their ed es at acute angles eml edge of the article being sharpened and in accordance with thedirection in which the latter is drawn, and spacing discs having enlarged bearing openings on said axle s and loosely interposed between sharpening discs.

9. In a knife sharpener, a support including spaced her ing brackets carrying axles extending then between, and gangs of spec'- ing and sharpening discs loosely mounted on said axle, said sharpening discs overlapping each other and being provided with hearing openings larger in diameter than said axles whereby said sharpening discs are canted by the article being sharpened so as to cause their planes to intersect thereby presenting their edges at acute cutting angles thereto.

10. In a knife sharpener, a support in- Leonie? eluding axle shafts extending transverselythereof, gangs of sharpening discs loosely mounted thereon and extending toward each other in overlapping relation and cohjointly forming an article receiving and sharpening recess, and spacing discs being loosely mounted on said axle shafts between said sharpening discs, provided with hearing openings larger in diameter. than said axle shafts permitting said sharpening discs to be canted in one direction or the other as the article is drawn thereover thereby presenting the edges thereof at acute anglesto the edge of the article being sharpened.

11. A knife sharpener, comprising a support including spaced bearingniembers, axle shaftscarried by the latter, andsharpening and spacing discs looselxmounted on said axle shafts, said sharpening discs extending toivsrd each other in overlapping relation DAVID LAMBERT,

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