Cutlery – Can opener – With driven roller to continuously engage bead and...
Patent
1980-08-01
1982-12-28
Jones, Jr., James L.
Cutlery
Can opener
With driven roller to continuously engage bead and...
B67B 734
Patent
active
043654177
DESCRIPTION:
BRIEF SUMMARY
RANGE OF APPLICATIONS
Many foodstuffs and other products are packaged in tins. Tins are opened with the aid of tin openers of various types. The present invention relates to a tin opener intended for opening a tin by cutting away from the remainder a part of the tin, wholly or partially. It is intended mainly for tins with two flat surfaces and a body shell connected with the aid of beads whereby at least on of the flat surfaces is cut away from the body shell in the vicinity of a bead, wholly or partially.
STATE OF THE ART
A tin opener for opening tins with two flat surfaces and a body shell connected with the aid of beads generally comprises a feed roll designed for driving engagement with the tin and for supporting the tin at the bead. A flat surface of a tin is frequently cut by means of a cutter roll, which in a working position near the feed roll is in cutting engagement with the flat surface. For the introduction of a tin which is to be opened between the cutter roll and the feed roll, or for the removal of a tin which has been opened, the outer roll can be shifted in some manner to a position of rest further removed from the feed roll and the cutting position.
One know method of arranging for the displacement of the cutter roll consists of mounting the cutter roll in a device capable of parallel displacement in a radial direction relative to the feed roll.
Another know method of arranging for the displacement of the cutter roll consists in mounting the cutter roll eccentrically on a device which can be rotated about its centre. An example of such a tin opener is described in U.S. Pat. No. 2,592,936.
EXPOSITION OF INVENTION
With a tin opener in accordance with the invention cutting as such is effected by a cutter roll capable of rotating about a rotary axis, which, during the cutting process, is rotated by a driving shaft via a driving gear-wheel and a gear-wheel. During the cutting process the tin is supported by a feed roll which is in driving engagement with the tin and mounted on the drive shaft. In order to enable the introduction of a tin which is to be opened between the cutter roll and the feed roll, or for the removal of a tin which has been opened from between the cutter roll and the feed roll, the cutter roll is mounted in such a way as to be capable of being rotated about a second axis separate from the axis of the drive shaft and from the feed roll. The mounting is such that the axis of rotation is inclined in relation to the other axis and is located at a distance from the latter. The cutter roll is preferably mounted on a spindle eccentrically secured within a tooth segment device capable of being rotated about the second axis.
DESCRIPTION OF FIGURES
FIG. 1 gives a view of the tin opener.
FIG. 2 shows the opening mechanism of the tin opener and a section through its mounting in the body of the tin opener as seen from the front.
FIG. 3 shows a drive shaft with pinion in the opening mechanism.
FIG. 4 shows a cover in the body of the tin opener as seen from the inside.
FIGS. 5 and 6, respectively, show a tooth segment device with spindle seen from the cover and in a direction as right angles to the drive shaft and the spindle, respectively.
FIG. 7 illustrates how the tooth segment device with the spindle is orientated in relation to the drive shaft with the pinion when the opening mechanism is in the working position.
FIG. 8 shows how the tooth segment device with the spindle is orientated in relation to the drive shaft with the pinion when the opening mechanism is in the position of rest.
BEST EMBODIMENTS
The tin opener 1 shown in FIG. 1 consists of a body made of a plastic and an opening mechanism. The body is designed with a handle section 2 and a predominantly disc-shaped main section 3 angled in relation to the handle section. The handle section, which is partly hollow, contains a hole 4 for hanging the tin opener on a hook or similar device. The actual opening mechanism is supported by the main section which, as can be seen in FIG. 2, is hollow and has an inner space 5
REFERENCES:
patent: 2462416 (1949-02-01), Nelson
patent: 2522382 (1950-09-01), Lampl
patent: 2592936 (1952-04-01), McLean
patent: 2843931 (1958-07-01), Lindahl
Eslinger Lewis H.
Jones Jr. James L.
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