US1168979A - Can-opener. - Google Patents

Description

K. URAKAWA.

CAN OPENER.

APPLICATION FILED AUG. I8, I9I5.

Patented Jan. 18, 1916.

THE COLUMBIA PMIIIOGRAPH co.. WASIIINUTON, n. c..

KAMETARO URAKAVIA, OF SEATTLE, 'WASHINGTJ Specification of Letters atent.

Patented Jan. t3, 19rd.

Application ledfAugust 1915. Serial No. 46,1%.

To all whom it may conce/fn .Be it known that KAMETARO Unsnnivrx, a subject of the Emperor of Japan, residing at Seattle, in the county of King and State of lWashington, have invented Certain nevv and useful lImpr(wements in Can-Openers, and do hereby declare the following to he a tull, clear, and exact description of the invention, such as Will enalole others skilled in the art to which it appertains to make and use the same.

This invention relates to can openers, and has for an object to provide an opener which. will eut a complet-e circle from the top of a can by depressing a handle.

A further object of the invention is to provide a can opener embodying means for embracing and engaging the top of a can and remaining stationary therewith, positioned and proportioned to out a complete circle out of a can top actuated by depressing a handle member.

With these and other objects in vieiv the invention consists in certain novel 'features of construction, combination and arrange'- ment of parts as will be hereinafter more fully described and claimed.

In the drawings: Figure l is a diametrieal seo-tional view of the improved can opener, certain parts being shown in side elevation broken away. Fig. 2 is a top plan view of the supporting hars and their adjusting means as indieated by arroiv 2 at l. Fig. 3 is a top plan view of the cutter bars taken on line 3-3 ot Fig. l. Fig. 4 is an end view of the supporting bars as indicated hy arrow t at Fig. l. Fig. is an end vieiv of the cutter hars and their knives as indieated by arrow 5 at Fig. 3. Fig. `6 is a transverse sectional vieiv through the supporting hars taken on line (5-6 of Fig-` 2. lfig. 7 is a transverse sectional view through the Cutter hars taken on line T---Jt' or' Fig. 3. Fig. 3 is a detail of the drum on line 3 of Fig. l.

Like characters ot reference designate corresponding parts throughout the several views.

rlhe improved can opener which forms the subject-matter oi this application comprises Y a body l0 having vertical grooves l1 and l2 formed therein. Sliding in the grooves is an inverted U-shaped 'frame 13, carrying at its upper end a handle le: and held resiliently at its upper extreme ot movement by springs l5 and 16. rlhe lower ends of the trame 13 are turned inwardly to form lugs l? and i3 moving respectively in spiral grooves 1D and 2O formed about the peripheryv of cylinder 2l Which is rigid upon shaft Slidahly mounted in the body l0 are horizontal supporting hars and 24: retained in parallelism byV keepers 2F. The inner edges of the hars 23 and 2d are! provided with rack teeth rlf'he raek teeth 26 intermesh .vith the teeth of the pinion mounten tree to rotate upon the shaft 22. At their opposite ends the hars 23 and 24 Carry supporting members or legs 23 of general tiel-shape. having oppositely opening slots si, #l2 formed in their sides and notches 29 formed in their loiver'ends to engage upon the head at the periphery of the usual and ordinary tin can. lt will oe oh vious that hy moving the hars and 2li the position oft the supporting members 23 may he 'varied to engage the head of a can of any desired diameter, and having' once engaged such head they Will he retained thereby in such adjusted position. The adjustinent of the hars 23 and 2li is aeeoinplished manually hy grasping the extended ends of such bars shoivn Fig. l. Upon the loiver end oithe shaft Q2 a 'drum 30 is fixed having horizontal openings 3l and entirely therethrough as shown at Fig. 3, such openings being in parallelism with, but odset upon opposite sides of the diameter of said drum. Through the openings 3l and 32 cutter hars 33 and 3ft respectively are. slidahly insertar, the .latter being helow the 'former but in parallelism therewith and retained in such parallelism hy keepers rifhe hars 33 and are also provided upon their inner surfaces with rack teeth 3G interineshing with pinion 37 also mounted tree to rotate upon the shaft @ne of the keepers 35 is provided with a set screw by which the adjusted position of the parallel cutter bars and 34E oe retained. it ivill he noted especially at Fig. l that the :tace ot' the pinion 37 is ivide enough to engage looth of the bars 33 and 34.1.

The hars 33 and 34- earry respectively cutting knives 39 and t0 which are Capable of being set to out a slit the desired distance 'from the periphery of the head loy moving the hars 33 and relative to eaeh other and binding them in such position by the set screw 38.

In normalV position the extended endV of the bar '34 rests in the slot 4l in one leg 2S While the extended end of the'bar 33 rests in the slot 42 in the other. Vhen the device has been rotated one-half a revolution the shape of the legs permitsthe extended ends to move beyond the original position so that the cutting knives 39 and 40 mayv ing knives therewith to sever the disk fromV the top of the can as described. y

It is believed that the operation of the device Will be clearly understood from the foregoing description of its construction.

I claim l. In a canY opener, an upright shaft having fast on its lower end adrum provided with parallel openings through'it on opposite sides of its' center and at different heights, and means for rotating said shaft at will; combined with parallel rack bars slidable through said openings, a long pinion loose on the sl aft within the drum and en'- gaging the teeth of both bars, and a knife depending from one end of each bar for theV purpose set forth.

2. In a can opener, an upright shaft having fast on it a drum provided with parallel openings through it on oppositeY sides ofvits center, and means for rotating said shaft at will ;c'oinoined with parallel rack bars slidable through said openings a pinion Within the drum and engaging theteeth of both bars, a keeper near one end of each bar through which the other bar slides, a set screw yin one'keeper for engaging the bar Within it, anda knife depending from one end -of each bar for the purpose set forth.

3. In'a can opener, abody, racks slidable substantiallv diametricallv relative to the body and provided at Vtheir opposite ends with supporting members, a pinion inter-Y posed betsveen the racks Avvhereby the racks move in unison, other bars substantially` diainetrical relative tothe body and provided with racks, a pinion interposed racks, cutters carried at the extremities of Copies of this patent may `be obtained for ve cents each, byaddressing Washington, D. C.

between the the bars, a member attached to the cutter bars and provided with spiral slots, and a frame movable vertically having lugs engaging in the spiral slots.

4.. In a can opener, a body, racks slidable substantially diametrically relative to the body, a pinion interposed between the bars engaging the racks, supports carried at the extremities of the bars and provided Vwith bod and luOs carried bv the verticall slid- Y s Y ing frame engaging in the spiral grooves.

5. In a can opener, a body having opposite vertical grooves, a frame slidabl'e in said grooves and having inturned lugs, an upright shaft journaled in said body, anda cylinder fast on the shaft and having spiral grooves engaged by said lugs; combined withY a support carried by said body, a drum fast on the lower end of the shaft, rack bars passing transversely through the drinn and .having depending knives at Vtheir outer ends, and means for permitting the simultaneous longitudinal movement of said bars.

6. In a can opener, a body, an upright shaft journaled therein, means for rotating it at Will, a pinion loose on the shaft, anda support coinpiising parallel Track ,bars guided horizontally through said body With their teeth engaging opposite sides ofsaid pinion and doWnturned legs on opposite ends of opposite bars, each leghaving side slots opening in opposite directions; combined With a drum fast on the shaft beneath said pinion and having transverse openings at diderent heights, a pair of rack bars slidably mountedV through said openings and each having a shortend with a knife depending' from it and a long end lying normally in oneof the slots in one of .said legs, and a pinion loose on the shaft Within Vthe .drum and engaging the teeth of the last-named bars, for the purpose set forth. Y

In testimony whereof I aliix my signature.

irai/.fernen 'neairhvvn the Commissioner of Patents,

ioo

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