US2085219A

US2085219A - Can opener

Info

Publication number: US2085219A
Application number: US35075A
Authority: US
Inventors: Frank F Hosmer
Original assignee: WILLIAM HALL GILBERT
Current assignee: WILLIAM HALL GILBERT
Priority date: 1935-08-07
Filing date: 1935-08-07
Publication date: 1937-06-29
Anticipated expiration: 1954-06-29

Description

iFun@ 29, 1937. F. F. HQsMl-:R l 2,085,219

CAN OPENER Filed Aug. 7, 1935 Patented June 29, 1937 UNITED STATES PATENT OFFICE CAN OPENER Calif.

Application August 7, 1935, Serial No. 35,075

2 Claims.

My invention relates to a can opener and is an improvement on the can opener covered by United States Letters Patent, No. 2,028,778, issued to me January 28, 1936.

The principal objects of my. present invention are, to generally improve upon and simplify the construction of the can opener disclosed in my aforesaid patent application; to mount on the upper one of the jaws of the opener, a bracket havn, ing a depending finger that engages the other jaw when the can opener is being used in order to firmly hold the jaws in proper operative position and prevent lateral separation thereof during the can top cutting operation, which bracket also serves to engage the top of the can so as to maintain the latter in proper position during the cutting operation; further, to mount one of the can engaging wheels so that it may slide for a short distance lengthwise upon its axis in order that the can opener will function properly while the blade thereof is passing around the corners of a square can and further, to provide on the lower one of the jaws a short lip or extension against which the wall of the can bears while the opener is in use in order to prevent the surface of the can and its wrapper from scraping against the toothed feeding wheel of the opener.

With the foregoing and other objects in view my invention consists in certain novel features of construction and arrangements of parts that will be hereinafter more fully described and claimed and illustrated in the accompanying drawing in which:

Fig. 1 is a side elevational view of a can opener of my improved construction.

Fig. 2 is a top plan view of the opener.

Fig. 3 is a vertical section taken on the line 3-3 of Fig, l.

Fig. l is a vertical section taken on the line 4-4 of Fig. l.

Fig. 5 is an elevational view looking in the direction indicated by the arrow 5 in Fig. 2.

Fig. 6 is -a perspective View of the blade utilized in my improved can opener.

Referring by numerals to the accompanying drawing which illustrates a preferred embodiment of my invention, I0 designates a short section of strap metal, the rear end of which is bent into a horizontal plane to form a handle II and the 50 forward end of the strap is bent outwardly to form a jaw l2 that occupies a plane offset from and parallel with that portion of the strap that connects said jaw and the handle I I.

Member I0 is pivotally connected preferably by 55 means of a rivet I3, to the vertically disposed leg I4 of a combined jaw and handle and the upper portion of said leg is curved rearwardly so as to occupy a position above the member I0 and the rear portion of this member is bent so as to occupy a substantially horizontal plane to form a handle I5 that is positioned above and spaced apart from handle II.

The horizontally disposed leg IB of the combined jaw and handle and which horizontally disposed portion functions as a jaw, occupies a posi tion just below and to one side of the jaw member I2 and the strap from which the combined jaw and handle is formed is extended outwardly at right angles from the forward end of the jaw I6 and thence rearwardly parallel with and spaced apart from said jaw I6, as designated by II.

A shaft i8 has its ends journaled in the forward portions of members I6 and Il and mounted on said shaft and retained thereon by a set screw iS is a pinion 20.

Shaft I8 extends a short distance beyond member II and suitably secured to the projecting end is one end of a crank handle 2 I.

Journaled in the rear portions of members I6 and Il, is a shaft 22, the forward end of which projects a short distance beyond jaw member I6 and mounted on this shaft and secured by a pin or key 23 is a gear wheel 24 that meshes with pinion 20.

The end of shaft 22 that projects through member I5 has fixed thereupon a disc 25 having a notched or serrated edge.

The notched edge of disc 25 engages the bead or ange that is formed between the side wall and end of a can.

Rigidly secured to the intermediate portion of jaw l2, is one end of a stud 2l that occupies a position directly above shaft 22 and mounted to rotate freely upon said stud is a disc 28, the size of which is such that its periphery occupies a position immediately adjacent and spaced a slight distance apart from the points of the teeth on the periphery of disc 25 when the bead of a can is engaged between the jaws.

Mounted on stud 2 to the rear of disc 28 or on the opposite side from jaw I2, is an expansive coil spring 21a that is normally under light tension and said spring is retained on said stud by a cotter pin 2lb that passes through said stud.

The periphery of disc 28 is formed with portions of slightly diiferent diameters, thereby providing a groove or offset on said periphery and which arrangement accommodates both upstanding and outwardly presented beads or anges that are the accommodation of stud 21.

Formed through the end portions of the body member 3|, are threaded apertures 33 that receive the threaded ends of screws 313e, which latter pass through apertures in the jaw member I2 and thus detachably secure the cutting member to said jaw.

Depending from the intermediate portion of the lower edge of body member 3|, is a blade 34 having a beveled lower edge 35 that is inclined lengthwise and the lowermost portion of this beveled edge occupies a position just above the center of the shaft 22 that carries the notched disc 25, thus providing a point 36 that is adapted to puncture the can upon which the open-v er is used and the sharp edge on the lower end of the blade 34 extends forwardly and upwardly so as to cut through the thin sheetmetal that forms the top of the can that is being opened.

Secured by means of one of the screws 33a to the outer face of the forward end of member I0, is the outer leg of an inverted U-shaped yoke 31 that functions as a brace and strength? ening member and formed integral with and projecting inwardly in a horizontal plane from the lower end of the outer leg of this yoke, is a nger 38.

Depending from the lower end of the inner vertical leg of this brace 37, is a nger 39 which, when the jaws are closed, bears against the inner face of the jawv I6 (see Fig. 4). AFormed on the lower edge of jaw I 5,. directly below the shaft 22 that carries disc 25, is an outwardly and downwardly presented lip or flange 45 which functions as a bearing to engage the wall of the can during the operation incident to the cutting of the top therefrom and the engagement of the wall of the can against this bearing lip prevents the upper portion of the wall of the can and its wrapper from scraping against the toothed feeding wheelr25.

In the use of my improved can opener, the handles` II and I are swung away from each other on the pivot formed by rivet I3, thus separating the jaws I2 and I6 andthe beaded edge of the can that is to be opened is positioned directly over the top of the toother disc 25.

The handles II and I5 are now brought together by the pressure of one hand so that the point 36 punctures the top of the can immediately adjacent the bead on the edge thereof and as the jaws are brought together, the bead will be firmly clamped between the disc 2S and the teeth on the edge of disc 25.

Crank handle 2l is now manipulated so as to rotate pinion 2li and rotary motion will thus be imparted to gear wheel 2li, shaft 22 and toothed disc 25, with the resultthat the can will be slowly rotated with the engaged bead passing between the edge of disc 23 and the teeth of disc 25, which teeth engage the bead so as to impart rotary motion to the can.

As the can is thus rotated, the sharp beveled edge 35 of the blade produces a clean edged cut through the top of the can immediately adjacent the bead on the edge thereof so that when the can has been completely rotated a clean edged disc of metal is cut from the top so that the contents of the can may be readily removed Y without encountering rough or jagged edges such as are produced by certain types of manually operated can openers.

The disc or wheel 28 that clamps the beaded edge of the can against the toothed disc 25, provides a rolling bearing for that portion of the bead that is directly engaged by the teeth of said disc 25 and as a result the rotation ofthe can when properly engaged by the jaws of the Vcan opener may be readily accomplished and further, such operation is conveniently accomplished through the use of a crank handle and pinions of different sizes for imparting rotary motion to the shaft 22 that carries toothed wheel During the can cutting operations, the horizontally disposed finger 38 bears on top of the can directly in front of the blade 34, thereby preventing the can from tilting while engagedrby the opener and at the same Vtime the finger 39 bears against the jaw I6 so as to firmly hold jaw I2 against outward flexing movement, particularly while the toothed wheel 25 and wheel 28 are passing around vthe corner of a square can. When the opener is used for opening square cans and the

wheels

25 and 28 .pass around the corners, wheel 28 may slide a slight distance lengthwise on stud 2l against the resistance of-V fered by spring 21a and after. the parts reach the straight edge of the can, wheel 28 returns to its normal position.v Y

During the can opening operation, theY wall of the can that is engaged by the device bears against lip or flange 40, which bearing tends to hold the can firmly during its rotation and the upper portion of the wall of the can and its wrapper is held away from the toothed wheel 25 so that said wall and wrapper will not scrape against said wheel.

Thus it will be seen thatI haveV provided a can opener that is relatively simple in construction, inexpensive of manufacture and very effective in performing the functions for which it is intended.

It will be understood that minor changes in the size, form and construction of the various` parts of my improved can opener may be madeV and substituted for those herein shown and described without departing from the spirit of my invention, the scope of which is set forth in the appended claims. I claim as my invention:

1. In a can opener, a pair of pivotally connectedY handles, jaws projecting from the forward ends of said handles, a shaft journaled in the Vlower jaw, a toothed wheel carried by said shaft, manually operable means for imparting rotary motion to said shaft, a blade carried by therupper jaw,

a roller journaled on the upper jaw and positioned adjacent said blade and above said toothedwheel,

a bracket secured to the end of the upper jaw, a

portion of which bracket is extended downwardly Y `from the jaw below said toothed wheel, a blade carried by the other jaw, a stud projecting from the jaw that carries said blade, a roller loosely mounted on said stud and positioned above the toothed Wheel on the other jaw, means for yieldihgly resisting the movement of said roller in one direction upon said stud, a bracket secured to the jaw on which the stud and roller are mounted, a

portion of which bracket overlies the jaw that carries the toothed Wheel and another portion of said bracket projecting downwardly so as to overlie one of the side faces of the jaw that carries the shaft and toothed wheel.

FRANK F. HOSMER.