USRE10443E - Frank sharp - Google Patents

Description

P. SHARP. GAN UPBNER.

Reissued Jan. 29, 1884.'

FIG-1.

` Z'o alt whom 1li/may concern:

. in the rI erritory ed certain new to advance or retract, and 'will holdsaid cutter bar,

`knife or cutter, said shank being slotted so as 4minating with an arrow rowpoint serve as of the cutting-edges,

Furthermore, the sides of this knife are so concaved or rounded as to turn down the edges of FRANK sriinr, cribs ANGELES, lcM.1r'oinnA.

ciu-OPENER.'

srncrifmAfrIoN' formingparnbf missiles. Letters Patent No.V 1o,-443, cated January 2e, 1884.

Original No. 253,432, dated February 7, 1832i Application for reissue filed December 1. 1883.

Be it knownaa I, FRANK snmp a citt zen of the United States, residing at Los An- -transverse section of the implement taken in the'planejof the cutter. Fi'gdt 1s a similar section, but taken on an enlarged scale, and

geles, in the county of Los Angeles', State of show-ing' oneof the shoulders of the cutter cn- C-alifornia, but formerly a resident of Socorro, gaged beneath the head ofthe can \or box.

of New Mexico, have inventl and useful Improvements in Can0peners, of which the following is a speci- A cation, reference being had tothe annexed l drawings.

The object of my invention is to provide an implement wherewith ordinary sheet-metal cans or boxes are capable of being cut open in the most expeditious and convenient man-V Fig. 5 is an enlarged ken in the plane of the adjusting-screw.

A represents a suitable handle, from which projects a bar, B, having'at its outer end a point, C, and an upwardly-projecting lug, D,

for one end of a'screw, E, the opposite end of said screw being journaled in the handle of the implement. This screw is readily turned einer. Said implement consists of a suitable 'ther to the right or left by means of a thumbhandle, from which projectsa bar terminating. wheel, F, attached thereto. Furthermore,-

with a point, adapted to penetrate the can and to serve as a pivot or fulcrum for the opener. Journaled in this handle and in a lug of the and arranged parallel with the latter, is a screw that engages with the shank of the this screw' engages with afemale thread in the shank G of cutter H, as more. clearly seen in Fig. 5, said shank being slotted at I, to enable said cutter to travel freely along the bar B. This knife H has an arrow-shapedpoint,` J, the shoulders of which, K K', merge into the cutting-edges L L', as more clearly seen 'in Fig. 4. Of these edges the one L' may as the front cutter,n and the other edgeLas the back cutter. `|lhe sides of this cut-ter .ar'e rounded inwardly or coneaved, as shown at N N in Fig. 5. O represent-s the top to be opened.

The method of using follows: The point C is first thrust intof the can-top at or near the center of the same, and the knife H is adjusted so as to cause it to cut comparatively close to the rim of the can, the screw E enabling said knife to be readily advaneedor retracted, so as to bring the latter into the desired position. Aslight pressure on handle A forces the knife H J L L' down through the ean-top O, the point C now serving as a fulcrum, that facilitates this operation,

after which act said point becomes a pivot,

to allowthe-cutter to travel freely along said bar; By this arrangement the proper turning of said screw will cause the cutter either as 'may be necessary, to any desired adjustment. without the employment of setscrews or other special retaining devices, as hereinafter more fully described.

Another feature of my invent-ion consists in i making the knife with two cutting-edges ter- -shaped point, that readily pierces the can or box to be opened. By this construction the shoulders of the arbearings, which run under the sheet to be' severed and slightly in advance thereby maintaining the knife in the most effective position and preventing it slipping out of the can orA box.

my implement is as the slot cut in the can, by which arrangement 'that enablesl said handle to be swung around the top' of the latter' is left perfectly smooth, in the direction indicated by the arrow in Fig. as hereinafter `morefully described. 2 'Whenythus swung around, the knife-edge ln the annexed drawings, Figure 1 is a see tionized elevation, showing my implement in the act ofcutting open the head of a can', part of the handle of said implement being broken away. Fig. 2 is a plan thereof.4 Fig.

L cuts a concentric slot or slit in the can-top,

1 1" ot' the slot to as represented in that the top of the causing the opposite cdgcs bend down into the can, 3 is a- Fig. l; VItwill thus be seen which lug ispierced to afford a journal-bearing be designated NITED. STATLSQPATENT .'Orricn. l j

.55 section of the cutter tai the concave sides N N of said cutter or knife ICO Y knife advances in the direction of the arrow substantially as can will be perfectly smooth gafter being'ent."

`prevent the cutter accidentally slipping up the handle A, the bar 7B, having a curved point, C, and a perforated lug, D, upon its forward end, the swiveled screw E, having thumb-wheel F upon its inner end, and the' cutter H, having in its shank G a screw-hole to receive the screw E and a perforation to re ceive the bar B, as set forth. i

Reference to'Figx 4 shows that as the the shoulder K engages under the can-top O, and thereby holds the latter in contact with the cutting-edge L. Hence it is apparent that said shoulder serves as a bearing or stop to out of the slot while the latter merge rear of said knife, purpose specified. can-opener knife whose sides N N are f rounded or concaved for the purpose of bendrespectively, as and. for the indicated in Fig. 2, the other shoulder, K, and edge L will then operate, as justdeseribed. l

I claim as my invention- 1. The combination, wltha can-'opener ofthe made in the vessel, :is at scribed. o y a In testimony whereofI afx my signature in presence of two witnesses.

FRANK .SH AR P.

I, P', herein dcwithout employinga special retalning device,

herein described.4

2 A can-opener constructed substantially as herein shown and W'itnesses:

H. C. GRAHAM, N. J. ULi-mim.

to hold the latter to any desired adjustment/ described, consist-ing of L L at the front and edges of the slit

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