US1919772A - Knife sharpener - Google Patents

Description

July 25, 3933. E. W. CARPENTER KNIFE SHARPENER Filed Nov. 8, 1930 PMS/9 i so Patented July 25, 1933 unit-s sass PATENTTQFFl-CE EDWARD W. CARPENTER, OF FAIR-FIELD, CONNECTICUT, ASSIGNOR TO THE E. W. CARPENTER MANUFACTURING COMPANY,.OF BRIDGECPORT, CONNECTICUT, A COR PORATION OF CONNECTICUT KNIFE SHARPENER Application filed November 8, 1930. Serial No. 494,306.

This invention relatesto new and useful improvements in blade sharpeners of the type employing two series of hardened steel dlscs, the discs of each series being spaced apart and the discs of one series being opposite the spaces between the discs of the other series and the discs of one series discs of the other series. I

An object of the invention is to provide an improved mounting frame or housing for blade sharpeners of the type described'the improved housing being formed of a single blank of sheet metal and including side walls on and between which the sharpening discs are arranged, the housing also including feet for resting on a supporting surface and sub stantially enclosing the discs but being cut away to provide an entrance for the blade to be sharpened and further including 1ntegral resilient extensions to be received in a handle.

overlapping the It is also an ob]ect to provide a housing or mounting of the character described and which shall be neat and of good appearance and which may be manufactured and sold at a relatively low cost.

Other objects and advantages will become apparent from a consideration of the following description taken in connection with the accompanying drawing wherein a satisfactory embodiment of the invention is shown. However, it will be understood that the drawing and description are for the purpose of disclosure only and that the invention comprehends all such changes and modifications as fall within the scope of the appended claims. r

In the drawing:

. improved sharpener Fig. 2 is a top plan view of the same, a portion of the handle being shown in sec-- tion;

Fig. 3 is a bottom plan view of the sharpener with the handle removed; and

Fig. 4 is an end elevational View with the handle removed, one of the legs being sectioned.

Referring in detail to the drawing the sharpener as shown includes a housing 5,

within which is disposed the series 6 and 7 of I hardened sharpening discs, the discs of the respective series being spaced as by washers 8 and the discs of the series 6 being arranged opposite the spaces between the discs 7 and vice versa and the discs overlapping as shown. The sharpener is adapted to be moved about and held by a handle 9, connected to the housing or mounting frame 5 as will later be described in detail.

The housing 5 is formed from a single E1806 ofsheet mketal bent upon itself wherey it is of substantially inverted U-shape in transverse cross section including a connecting portion 10 and side walls or portions 11 and 12. Extending between and supported by the walls 11 and 12are spaced pins or rivets 13 on which are, rotatably supported the spaced discs 6 and 7 and the washers 8 pre viously referred to. i

Intermediate the ends of the housing 5 the connecting portion 10 and the side walls 11 and 12 are cut away as at 14 to provide an entrance for the blade to be sharpenedwhereby it may be introduced into the channel 15 to be operated and sharpened by drawing it across the discs in a manner well known. At their lower edges the side walls 11 and 12 flare out vlai'lly as at 16 and 17 and are cut away as a a The vertical edges of the outwardly flared portions 16 and 17 carry extensions or lugs 19 bent to extend toward each other as shown whereby to give the housing a neat and finished appearance. Further, the lower edges of the portions 16 and17, at the extremes of the cutaway portions 18 carry lugs or extensions 2O inturned as shown and providing feet for supporting the sharpener.

These feet 20 are disposed below the lower edges of the extensions 19 to provide flat surfaces for engaging supporting surfaces whereby the likelihood of scratching or otherwise mar-ring the supporting surface is walls 11 and 12 above the flared portions 16 and 17 are a pair of extensions 21 and 22 bent toward each other and abutting as at 28. These extensions 21 and 22, from the point 23 are designated 21, and 22 and are transversely curved as shown and tend to spring apart as most clearly shown in Figs. 3 and 4.

The portions 21, and 22,, are adapted to be received in a socket 24 in the handle 9. To accomplish this the portions 21 and 22 must be sprung together and when received in the socket 24 tend to spring apart and thereby frictionally secure the handle to the housing. A ferrule 25 may be provided on the end of the handle to keep it from splitting." From the foregoing it will be seen that the housing or frame 5 is formed in one piece stamped and shaped as shown. Further, a housing of neat appearance is provided since the exten sions 19 conceal the feet 20 and give a flnished product. Additionally, the extensions 21 and 22 extending toward each other close the space between the rear edges of the vertical portions of the sides or walls lland 12.

The housing being stamped and bent ma be manufactured at a comparatively low cost. Since the extensions 21 and 22 for securing the handle 9 to the housing, are formed withthe housing, no additional expense is involved in providing means for attaching the handle. It will also be appreciated after an inspection of the drawing that the discs 6 and 7 are substantially enclosed and the handle 9 being remote from'the entrance 14 for the blade to be sharpened there is little chance of the operator becoming injured. Also, the flared or outwardly and downwardly inclined portions 16 and 17 of the housing give the latter a relatively wide base whereby the same is not likely to tilt or wobble while in use. Having thus set forth the nature of my in vention, what I claim is: v

1. In a sharpener of the class described including overlapping sharpening discs, a housing, said housing being substantially inverted U-shape in transverse section, said sharpening discs supported within the housing, the side walls of the housing each cutwardly flared at its lower portion, the said flared portions having the central portion of their lower edges cut away, and said flared portions at their lower edges at each end of their cutaway portion carrying extension turned under the housing andhaving their lower surfaces disposed below the lower edges of the housing whereby to provide relatively broad supporting feet for the housing.

2. In a sharpener of the class described including overlapping sharpening discs, a housing, said housing being substantially inverted U-shape in transverse section, said sharpening discs supported within the housing, the side walls of the housing each ontwardly flared at its lower portion, an extension on each vertical edge of said flared portions, said extensions on the corresponding edges of the flared portions disposed toward each other and each partially closing the space between said side walls, the said flared portions having the cen ral portion of their lower edges cut away, and said flared portions at their lower edges .ach end of their cutaway portion carrying extensions turned under the housing and having their lower surfaces disposed below the lower edges of the housing whereby to provide relatively broad supporting feet for the housing.

3. In a sharpener of the class described including two overlapping series of sharpening discs, a housing, said housing being substantially inverted U-shape in cross section, said discs disposed between and supported by the side walls of the housing, said housing cutaway to provide an entrance to the sharpening discs for the blade to be sharpened, extensions on corresponding edges of said side walls, said extensions bent toward each other across one end of said housing and then tending away from one another, a handle having a socket, and said extensions adapted to be sprung toward each other and insert into the socket whereby the handle is attached to the housing.

l. In a sharpener of the class described including two overlapping series of sharpening discs, a housing of resilient sheet metal and substantially of inverted U-shape in cross section, means mounting the discs in the housing, said housing having an opening in its top wall providing an entrance for the blade to be sharpened, the lower free edges of the side walls forming feet to support the device, an integral extension on one upright edge of each side wall and normally tending to separate at their free ends, and a handle having a socket, said extensions being inserted in said socket and holding the han dle thereto bytheir resilient action.

EDWARD W. CARPENTER.

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