US1016513A - Can-opener. - Google Patents

Description

M. P. NEWGOMB. CAN OPENER.

- APPLICATION FILED 0012s, 1909.

Patented Feb.6,1912.

3 SEEETS SHEET 1.

- Snoznfoz warm w J COLUMBIA PLANOGRAPH cc WASHINGTON, n. c.

M. P. NEWGOMB.

0m OPENER.

APPLICATION FILED OUT. 26, 1909. 1,016,513. Patented Feb. 6, 1912.

3 SHEETS-SHEET 2.

M. P. NEWGOMB.

CAN OPENER.

APPLICATION FILED OUT. 26, 1909.

1,016,513, Patented Feb. 6, 1912.

3 SHEETSSHEET 3.

u u u u v u u u u u I w u u u nu 3110a nl'on LANODRAPH co., WASHINGTON, D. c

wamwm v Mad MICHAEL P. NEWGOMB, OF SANDPOINT, IDAHO.

CAN-OPENER.

Specification of Letters Patent.

Application filed October 26, 1909.

Patented Feb. 6, 1912.

Serial No. 524,619.

To all whom 1' t may concern:

Be it known that I, MICHAEL P. NEwooMB, a citizen of the United States, residing at Sandpoint, in the county of Bonner and State of Idaho, have invented a new and useful Improvement in Can-Openers, of which the following is a specification.

This invention relates to can openers, and more particularly to that class of openers in which the knife is held stationary and the can is revolved below the same, the object being to provide a can opener with a revoluble table having means for clamping a can thereon in such a manner that the can can be easily and quickly secured in position or removed therefrom.

Another object of my invention is to provide a knife which is carried by a spring actuated shank in such a manner that after the knife has been forced down through the top of the can it will be held in that position so that when the can is revolved under the same a circular out will be formed in the top of the can so that the intermediate portion can be readily removed in order to enable the contents of the can to be readily removed.

A further object of the invention is to provide the revoluble table with clamping jaws which are operated in such a manner that they can be readily expanded or contracted in order to suit different sized cans.

A still further object of the invention is to provide means for adjusting'the knife with respect to the table whereby the same can be adjusted so as to out different sized cans.

Still another object of this invention is to provide a can opener which is especially adapted to be used in hotels where it is necessary to open a great number of cans at once, said can opener being adapted to be secured to a table or other suitable support whereby it will only be necessary to securethe can upon the revolving table and by operating a crank the can will be revolved under the cutting knife.

A still further object of the invention is to provide a can opener which is exceedingly simple and cheap in construction and one in which the parts are so arranged and connected together that they can be easily and quickly attached or detached.

Another object of my invention is to provide a revoluble table in which is mounted a transverse shaft carrying clamping jaws and provided with a central worm which is adapted to be engaged by a gear carried by a shaft which is operated by a crank.

With these various objects in view, my i11- vention consists in the novel features of construction, arrangement and combination of parts, all of which will be hereinafter fully described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a side elevation of my improved can opener. Fig. 2 is an end elevation of the same. Fig. 3 is a section taken just above the revolving table showing the table in plan view. Fig. 4 is a vertical section through my improved can opener, part of the same being shown in elevation and the upper pora tion of the bracket arm being broken away. Fig. 5 is an enlarged detail vertical section through the knife carrying member. Fig. 6 is a transverse section through the guideway and sliding block showing the manner of securing said block in its adjusted position, and Fig. 7 is a section taken on the line 7-7 of Fig. 1.

In carrying out my improved invention, I employ a casting A which comprises a base having an upwardly projecting yoke provided with journal bearings in which is mounted a transverse shaft B which is locked within the bearings by a pin B and has a beveled gear C and a crank arm D secured upon one end for the purpose hereinafter fully described. The yoke is connected together by a portion A which is provided with an annular bearing A on which is revolubly mounted the annular bearing portion E of the hub of a beveled gear E which meshes with the beveled gear G and is held in position thereon by a vertical shaft F which is secured within the portion A by a pin F and is provided with an annular groove F in which fits a pin E carried by the hub of the beveled gear E whereby the hub will be allowed to rotate freely around the same and yet will be held firmly in position on the bearing A Secured on the top of the beveled gear E by screws G is a table H provided with outwardly projecting oppositely disposed portions H over the ends of which are secured bearing plates H in which are mounted the ends of a transverse shaft I which is provided with oppositely threaded end portions on which are mounted the downwardly projecting threaded lugs J of plates J which are rabbeted as clearly shown and adapted to fit within guideways K formed in the sides of the portions H so that when the shaft is revolved the plates slide in the guideways toward each other. The lugs J of the plates J work in grooves formed in the bottom of the table H and secured upon the top of the plates J are angular serrated jaws J 2 which are adapted to engage the opposite sides of a can when arranged upon the central circular supporting table H so as to securely lock the can thereon in such a manner that the same will be revolved with the table when the crank D is turned.

The shaft I is provided with a central worm I adapted to mesh with a gear LT carried by a shaft L extending transversely through the table at right angles to the shaft I said shaft being mounted in bearings formed in the sides of the table and secured upon one end of the shaft L is a sleeve L to which is hinged a crank arm L for operating the shaft and it will be seen that when the crank L is turned the shaft I will be rotated through the medium of the worm gear so as to cause the jaws to travel toward each portion M of a bracket arm M which extends upwardly and inwardly as clearly shown and is provided with a vertical guideway N in which is slidably mounted a block 0 the opposite sides of which are grooved to receive the guideway and the sides of the guideway are slotted longitudinally through which extends bolts 0 carrying thumb nuts O for locking the block in its adjusted position within the guideway and it will be seen that by loosening the thumb nuts the block can be moved up and down in the guideway. The top of the block 0 is provided with a horizontal guideway which extends outwardly as shown at O in which is slidably mounted a plate P which has an integral vertical sleeve portion P at one end in which is slidably mounted a spring actuated shank Q, the lower end of which is bifurcated in which a knife Q is adapted to be secured and the upper end is provided with a knob Q which bears against a coil spring Q which rests upon the top of the sleeve P and normally has the tendency to force the shank upwardly. The shank is provided with a series of notches Q adapted to be engaged by the beveled end of a pin R which is mounted within a boss formed in the side of the sleeve P and is provided with a ert an inward pressure upon the pin so as to force the pin in the notches of the shank, and it will be seen thatby this arrangement the shank will be looked as the same is forced downwardly for the purpose hereinafter fully described. A screw R extends inwardly from the opposite side of the sleeve P for guiding the shank and as the shank is forced downwardly the pin R is forced outwardly by the notches of the same so that when released the pin will be forced inwardly into the notches so as to hold the shank against the tension of the spring Q The plate P is provided with a set screw P for locking the same in its adjusted position Within the guideway O and it will be seen that by this arrangement the sleeve carrying the shank can be adjusted with respect to the can-carrying table so that any size or width can can be cut.

The operation of the device is as follows: A can is placed upon the table H and the crank L is operated until the jaws are forced into engagement with the opposite sides of the can so that the same will be securely locked in position thereon. The thumb nuts 0 and the set screw P are then loosened and the sleeve carrying the shank provided with the knife is adjusted over the can so as to bring the knife into engagement with the top of the same adjacent the edge and the set screw and thumb nuts are then tightened and the knob Q is given a slight blow so as toforce the pointed blade Q, through the top of 'the can and it will be seen that as the shank passes over the beveled end of the pin it will be locked by the same so as to hold the knife through the can and by operating the crank D the table carrying the can will be rotated so as to cause the top of the can to be cut out.

From the foregoing description, it will be seen that I have provlded a can opener which is so constructed that it can be used for opening all sizes of circular cans in such a manner that the top of the can can be completely cut out in order that the contents can be readily removed and it will be seen that with this device all danger of the person operating the same cutting his hand is prevented.

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

1. In a device of the kind described, a combination with a rotatable can holding table, said table being provided with radial grooves, of plates provided with jaw portions having depending lugs extending into the grooves of the table, a shaft having oppositely threaded end portions, saidportions working respectively in said lugs, a central worm formed on said shaft, and a worm gear meshing with said central worm, as and for the purpose set forth.

- 2. In a can opener, a rotatable table centrally cut out, said table having lateral extensions diametrically opposite each other,

said extensions having vertical end and side members, a shaft journaled in the end members of said extensions, the sides of the extensions being undercut to form guide Ways, plates slidably held in said guide Ways, inwardly projecting V-shaped jaws carried by said plates, the said table being grooved radially and along the central longitudinal line of said lateral extensions the shaft above mentioned rest-ing in said grooves, said shaft having oppositely threaded portions, lugs carried by the plates and adapted to travel in said grooves, said shaft passing through Copies of this patent may be obtained for said lugs, a central Worm upon the shaft, said Worm being arranged in the central opening of the table, a Worm gear meshing With said central Worm, and a can supporting portion mounted upon the table and 00V- ering said central portion, as and for the purpose set forth.

MICHAEL P. NEWCOMB.

five cents each, by addressing the Commissioner of Patents, Washington, I). 0.

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