US1182785A - Can-opener. - Google Patents

Description

E. H. MORRISON.

CAN OPENER.

APPLICAHON FILED NOV. 20. I915.

1, 182,785. Patented May 9, 1916.

PATENT @Fldllfildl,

EDGAR I-I. MORRISON, OF VIRGINIA BEACH, VIRGINIA.

CAN-OPENER.

Application filed November 20, 1915.

To all whom it may concern Be it known that I, EDGAR H. MoRnrsoN, a citizen of the United States, residing at Virginia Beach, Princess Anne county, and State of Virginia, have invented and discovered certain new and useful Improvements in Can-Openers, of which the following is a specification.

The present invention relates to can openers and consists in the combinations and arrangements of parts hereinafter described and particularly set forth in the accompanying claims.

It has been heretofore proposed to construct a can opener with a blade having a serrated or saw tooth cutting edge, but this feature has evidently been found impractible, inasmuch as tools of such character are not now on the market, and for the obvious reason that such a cutting blade would produce only a rough or ragged edge, and the operation of the tool would itself be laborious. It is also believed true that the present used straight edge blade, while defective in many ways, is superior to the former, and it is therefore the'purpose of this invention to provide a cutting blade for can openers which will embody only the desirable features of the two above mentioned tools, and to this end it is proposed to construct a toothed cutting edge in which the several teeth thereof are each constructed with cut ting points and cutting edges all cooperating, in the working of the tool, to produce a clean and even cut with the least amount of labor.

The invention is shown by way of illustration in the accompanying drawings, wherein Figure 1 is a side elevational view thereof, Fig. 2 a top plan view of the same, Fig. 3 an enlarged view of the cutter blade and fulcrum arm, Fig. i a transverse sectional view taken on the line 4l of Fig. 3, and Fig. 5 a detail perspective view of one of the teeth.

Referring to the construction in detail, the device consists of a handle 1,-having a suitable gripping portion 2 and a forked extension 3, the prongs 4 of which provide suitable fulcrum points for manipulating the device after the usual manner. The construction of these elements forms no part of the present invention, and no claim is made thereto.

Specification of Letters Patent.

Patented May $5, 1916.

Serial No. 62.613.

The cutter consists of a plate, or blade, 5 suitably secured to the handle 1 by rivets 6, or otherwise, and said handle 1 is cut away or recessed, whereby the working edge of the blade is located evenly between the fulcrum bearings l for the proper working of the tool.

The cutting edge of the blade 5 is con structed with a plurality of teeth 7, arranged after the manner clearly illustrated in Fig. 3, and each tooth is formed with a cutting edge 8 and a second cutting edge 9 disposed at an angle relatively thereto, and said cutting edges 8 and 9 provide cutting points 10 and 11 located at the respective ends of the edges 8. From the points 10, the several teeth are under-cut, as at 12, giving the proper clearance for the diagonal cutting edges 9, and the several edges 8 form a continuous knife edge that is disposed parallel with the handle extension 3. This knife edge (2'. e. the several edges 8) is adapted to work after the manner of a ripping blade,

and in operation the ripping action is transferred from the edge 8 to the next adjacent edge 9, and in succession for the-length of the blade.

The several teeth have their sides 12 tapering to the edges 8, and, in like manner, tapering to the edges 9, thereby giving a virtually continuous knife edge to the blade, and the aggregate length of which is appreciably greater than the over-all length of the blade 5. This feature makes possible the easy operation of the tool when working through ordinary cans, and causes a cut of considerable length by a simple movement of the tool. And the extreme edge of the blade 5 is formed pointed, as at 13, for easy penetration of the metal, and the inner edge 14: of said blade is also formed with a knife edge.

It is obvious that those skilled in the art may vary the details of construction and arrangement of parts without departing from the spirit of the invention, and therefore I do not wish to be limited to such features except as may be required by the claims.

Having thus described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. A cutting tool comprising a blade constructed with teeth having alined and diagonally disposed straight cutting edges, the

alined cutting edges of the teeth overlying the diagonal cutting edges of the respective adjacent teeth and. forming a substantially continuous cutting edge, substantially as set forth.

2. A cutting tool comprising a blade constructed with diagonally disposed teeth having each a plurality of cutting points and straight cutting edges, a portion of the cutting edge of each tooth overlying a portion of the cutting edge of its respective adjacent tooth. and forming a substantially continuous cutting edge, substantially as set forth.

A can opener comprising a handle and a blade carried thereby, said blade having its cutting edge constructed with teeth, said teeth each having a pair of cutting points and a pair of straight cutting edges, and the respective sides of said teeth being tapered and forming substantially a continuous knife forming a substantially continuous Working knife edge for a given movement of the handle, substantially as set forth.

In Witness whereof, I have hereunto set my hand and seal at Virginia Beach, Virginia, this 8th day of November, A. D. 1915.

EDGAR H. MORRISON.

lVitnesses V. T. JARVIS,

NOAH Jnonsoiv.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. 0.

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