US2570564A - Grinder for sharpening cutlery - Google Patents

Description

Oct; 9, 1951 w, KUBLlN 2,570,564

GRINDER FOR SHARPENING CUTLERY Filed Dec. 51, 1948 INVENTOR; FRED W. KuBL/N ATTORNEY M grinders for sharpening cutlery, and particularly to an improved toolof this character which is especialy suitable for household use.

Patented Oct. 9, 1 951 .1."

GRINDER Fort SHARPENIN G CUTLERY Fred William Kublin, St. Louis,"Mo., assignor to Dazey Corporation, St. Louis Mo., a corporation of Delaware Application December 31, 1948, Serial No. 68,530

invention relates to improvements in The principal object of my invention is to provide a small, compact, highly efficient sharpening machine.

An important object of the invention is achieved in the provision of an improved twostage velocity increasing gear mechanism wherein a manual crank and a grinding wheel driven thereby are mounted in coaxial relation on opposite sides of a bracket arm that forms a housing for the gear mechanism.

Another object resides in the provision of improved means for supporting a tool for sharpen- 7 ing purposes at one side of the grinding wheel. I These and other objects andadvantages will appear from the following description. of a practical and presently preferred embodiment of my invention, reference being made to the acco panying drawing wherein: j

' Fig. 1 is a side view with a portion of the side wall of the housing and the crank member broken away;

Fig. 2 is a plan sectional view partly in section, as taken at section line 22 of Fig. 1;

Fig. 3 is a fragmentary sectional view as taken at line 33 of Fig. 2, and

Fig. 4 is an inner end view of the grinder.

Referring now to the drawing, the body or frame structure of the grinder is a hollow armlike housing designated generally I, consisting of a pair of complementary sheet metal sections 2 and 3. These sections fit together at their margins, the section 2 having a peripheral bead 4 which accommodates and conceals the margin of section 3. The sections are secured together by pins 5 which are driven into the ends of a tubular spacer that provides a bearing for a gear 3Claims. (c1.-51 111)- assembly to be hereinafter designated and described. The housing sections are also secured together at one end by a plate I having openings through which extend lugs or tabs 8 and 9 formed integrally on the ends of the housing sections. These tabs are projected through openings in the end plate I and are bent over as shown in Fig. 4. The plate 1 constitutes a wall mounting element and has downwardly convergent side edges for detachable connection with a correspondingly shaped socket plate (not shown) which is adapted to be secured to a wall or other support.

There is formed in the housing section 2 near the end thereof remote from the wall mounting plate a circular opening and the marginal metal surrounding this opening is turned inwardly to form an annular rim or collar I0. serves to positiona cupshaped member I I hav- The rim I0 ing a base flange I2 by which it is welded or otherwise'suitably secured to the housing section 2. The member I I constitutes 'a bracket 01' support for ashaft I3 whichextends centrally through the cup-shaped bracket I I and is rigidly secured is effected by means of a flanged collar I4 which is press-fitted on the shaft and is welded to the end wall of the cupped bracketI I. I

The shaft I3 projects centrally through an opening I5 formed 'in'the 'side wall of the housing section 3, and with the flanged collar I4 provides a bearing for a gear and crank assembly. This assembly includes a relatively large gear I6 and a crank I! having a flanged hub part I8 which is permanently secured to the gear I6 as by welding. A recessed portion I9 of the crank I is provided with an openin to receive the shaft l3 and the described assembly is retained on the shaft by a spring retainer'ring 20. A rotatable manipulating knob 2 I -.is provided on the free end of the crank.

The gear I6 meshes with and drives a small pinion gear 22 fixed to a sleeve 23 which is journalled for rotation on a stationary bearing sleeve 24, the latter being secured at its ends to the housing sections 2 and 3 by the headed pin 5, previously referred to. A relatively large gear 25 is also fixedly secured to the sleeve 23 and this gear projects through an opening 26 formed in one side wall portion of the cupped shaft bracket I I. The gear 23 meshes with and serves to drive a small pinion gear 21 keyed to the inner end of a bearing sleeve 28 which is journalled on the stationary shaft I3. The sleeve 28 is of hexagonal external section, and a grinding wheel 29 having a hexagonal central opening is mounted on the sleeve and adapted to be turned thereby.

The grinding wheel 29 is preferably composed of a pair of half sections 290. and 2% having bevelled inner peripheral edges which together form a V-shaped groove 39. The wheel sections are normally held in pressure engagement with each other by a spring 30. A washer 3I retains the wheel sections on the sleeve 28.

The stationary shaft I3 projects outwardly beyond the end of the grinding wheel bearing sleeve 28 to provide a mounting for a tool rest 32. This tool rest comprises a sleeve having a flange from which projects a plate 33 disposed at an angle to the side surface of the wheel. The plate 33 is adapted to support an edged tool such as a scissors blade and hold the same at the proper angle to the side of the wheel. The tool rest 32 is adapted for angular adjustment about the shaft 13 and is retained on the shaft by a retainer ring 34 which seats in grooves formed in the said shaft and in the sleeve of the tool rest.

I have described my invention with reference to a preferred; practical workinggembodiment thereof. It will be understood thatchanges. may be made without departing from the spirit and full intendment of the invention which is defined the appended claims.

I claim: 1. A cutlery grinder comprisingyanelongated housing having mounting-means; at oneiend, a.

bracket disposed within and fixed to said housing near its opposite end, a stationary shaft rig-idly secured at an intermediate point to said bracket, said shaft projecting laterallytfrom said housing, a grinding wheel at one side'of said housing, rotatably mounted. on said' shaft, a driven gear disposed within the housing and fixedlto said grinding wheel, said shaft-project- .ing; outwardly beyond the outer sideface of said wheel; a tool rest mountedonv said projecting outer end of said shaft,,a-crank disposed at the opposite side of said housing, and rotatively mounted on said stationary shaft, a driving gear fixed tov said. crank and disposed within the housing, a rotatable countershaft in said housing spaced between said stationary shaft and said housing mounting means, and a pair of gears hired to: saidicountershaft and operatively engaging said driving'and, driven gears.

2. A cutlery grinder comprising an; elongated housing, means at one end for attaching, the housing to a support, said housing having an internal bracket member-near its opposite end, a

stationary shaft rigidly secured *at' an intermediate point to said internal bracket member;said

jshaft projecting'laterally from the. housing," a

grinding wheel at one'side of said housing, rotatably mounted; on saidstationar-y shaft, a driven" gear rotatable on esaidshaft and :fixed'to said wheel, a manual crank at theppposite side 4 of said housing rotatably mounted on said stationary shaft, a driving gear fixed to said crank and disposed within the housing, a rotatable countershaft in said housing spaced between said stationary shaft and said end mounting means, and a pair of gears fixed to said countershaft in meshing engagement with said driving and j drivengears;

'operatively interconnecting said .sleeve forrotation byg said crank, and a tool rest comprising a collar disposed for rotational adjustment on the outer end ofsaid-shaft and a tool supporting plate'secured to said collar.

' FRED WILLIAM KUBLIN.

REFERENCES; CITED The followingreferences are of record inthe file- 01 this patent:

- UNITED STATES PATENTS" Number Name Date 822,070 McLeran May 29, 1906 871,785 Cook Nov, 26, 1907 909,319 McLeran Jan. 12, 1909 970,542 Panyard Sept. 20, 1910 1,100,722 Fry June23, 1914 1,119,196 Siebert .Dec. 1, 1914 1,414,172 Brown Apr. 25, 1922 1,558,194 Lueblen Oct. 20, 1925 1,756,710 Tuttle' Apr. 29, 1930 2,465,528 Goodwin Mar. 29,194!) 2,515,247 McCabe July 18, 1950

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