US1008932A - Can-opener. - Google Patents

Description

- E. WALTHER.

CAN OPENER. V APPLICATION FILED JUNE 27, 1911.

1,008,932. Patented Nov. 14, 1911.

2 SHEETS-SHEET 1.

E. WALTHEiL I 1 CAN OPENER: APPLICATION FILED JUNE 27, 1911. f 1,008,932. Patented Nov. 14, 1911.

2 SHEETS-SHEET 2.

wit- ED S PATENT OFFICE? I EMIL WALTHER, 0F W ERDAU, GERMANY, -ASSIGNQR T0 '1'. A; SATTLER, OF

' NEUKIRCHEN, GERMANY, A FIRIVL' CAN-OPE ER.

I Specification of'LettersPatent. v 'Patehted Nov, 14, 1911, vApplication filed June 27, 1911. Serial No. 635,627.

-To all whom at may conaem:

.f0llowing. is..a specification, reference being had therein to the accompanying drawing. The invention is a contrivance for open mg conserve and similar boxes with which, as

is well-known, a circular knife is applied ,that cutting into the tin while being turned. With the box-openers of this kind and hitherto in use, the circular knife is quite firmly situated, and it is for this reason that on the one hand no fixed depth of the cut can be set and on the other hand the knife cannot get over possible obstructions in cutting, siich as for instance soldering.

The nature of the invention "consists in the advantage that the shaft of the knife admits of being displaced in a perpendicular plane and has theadvantage of being movable in the direction of .the major axis of the sleeve,

the force of a spring. tending to move the knife nearer to the r1m. After putting the box on a table capable of being perpendicularly adjusted, the axle of the knife is so far lowered through an adjusting-screw that the knife cuts through the tin just at the surface, and the cut is close to the rim of the box. If the axle of the. knife is turned while the box is moved at the same time, then the cover is cut-out without the formation of burs. The axle of the knife is more or less displaced toward the middle of the box if the knife meets with any obstructions, such as soldering or the like. v

The drawing represents such a contrivance for opening conserve and similar boxes in 4 one form of execution.

Figures 1 and 2 are side views of the contrivance with different positions of the single parts. Fig. 3 shows a front view in connection with Fig. 1, and Fig. 4 gives thereto a view from above.-

The frame A is so fastened by means of a clamp C, on a plate a, as to be removable, and it carries in its upper box-like end a sleeve 6, movable in a perpendicular plane around the pin 0?. Therein rests in an axially movable -manner and permanently pressed by spring 7 toward the right side the axle h of a circular knife 5. connected with the hand-crank g, the knife serving inthe well-known manner for cutting open There is situated the covers of boxes. closely beneath this knife, the axle of which can be raised or lowered' ad libitum by means of the screw is, an'clementsupporting in the well-known manner the conserve on similar box m and capable of :beingeasily taken out, as for instance anelastic hoop 11, whereby the box is prevented from slipping sidewise while being slowly turned beneath thecircular knife, so that accordingly the cover of the box cut out is a circular disk. A table 19, capable of being perpendicularly adjusted by means of the toothed mechanism .0 with several bands q and a movable roll 1" for the box, as already employed with other I box-openers, serves as a support to. the box and holds it in such a secure way between the bands referred to and on theroll that even an unskilled-person is able to cut out the cover in a thoroughly perfect manner.

If boxes are to be opened that are not-circular .and have an eight-angled or similar base, then the hoop n is removed in the manner shownby Fig. 2, and the plate ufastened to the bar S. by means of the finger screw 25 is carried beneath the circular knife, whereupon the box is drawn along against the part '1; and may be cut open by the ro tating knife.

If the depth of the cut is properlyset, the cover of a box is easily cut open so that on account of. the movableness of its axle the knife avoids all obstacles. Moreover the formation of much bur, as is unavoidable with a large depth of the cut, is impossible. The cutting-plane of-the' circular knife may be also so arranged as to be parallel to the cover of the box, so that the knife cuts into the lateral walling of the box and thus separates the cover. (See po-',' sition of the box as shown in dotted lines in Fig. 1.)

Patent claims:

1. A can opener comprising av frame, a sleeve pivoted on said frame and rotatable in a vertical plane, a set screw to maintain said sleeve at the desired angle, a shaft disposed lengthwise in said sleeve, a circular cutter on one end of said shaft and a crank on the other end of said shaft, and a .verti cally adjustabletable beneath said cutter, substantially as described. Y

. 24A can opener comprlsing a frame, a sleeve rotatable 1n a'vertical plane on a pin on said frame, a set screw to maintain said sleeve in the desired position, a shaft disposed lengthwise in said sleeve, a circular cutter on one end of said shaft, means to rotate said shaft on the opposite end thereof,

resilient means I permitting axial movement 7 of said cutter, a vertically adjustable table having a roller beneath said cutter, and an expansible can holder adjacent the top of the can, as specified. I

3. A can opener comprising a frame, a sleeve rotatable in a vertical plane on a pin on said frame, a set screw to maintain said sleeve in the desired position, a shaft longitudinally disposed in said sleeve, a circular pansible can holder adjacent the top of the 4 can, means to removably attach said can holder to said frame and means to hold the side of a can against said cutter,'as herein set forth. o

In testimonywhereof I aflix my signature.

EM'IL WALTHER. In the presence of I J. KLUHPEN, CHARLES NEUER.

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