1. A packaging for foodstuffs, comprising a bottom part having at least one row of shaped depressions formed therein for accommodating separate articles, and a lid part configured for swing action on the bottom part, the bottom part and the lid part being provided with complementary clamping elevations and clamping openings,
wherein the clamping openings are arranged on one of the lid part or bottom part and the clamping elevations are arranged on the other of the lid part or the bottom part, the clamping openings being offset in relation to the clamping elevations.
2. The foodstuffs packaging according to claim 1, wherein the clamping elevations and the clamping openings are respectively no higher or deeper than a maximum nesting height of 4 to 15 mm.
3. The foodstuffs packaging according to claim 1 or 2, wherein the clamping openings are arranged approximately centrally over adjacent clamping elevations.
4. The foodstuffs packaging according to claim 1 or 2, wherein the top edge of the lid part is configured such that the spacing of the nearest clamping opening is less than or equal to the free spacing between two adjacent clamping elevations.
5. The foodstuffs packaging according to claim 1 or 2, wherein the clamping elevations and the clamping openings have a conicity of 2\xb0 to 15\xb0.
6. The foodstuffs packaging according to claim 1 or 2, wherein at least six clamping elevations arranged in a double row are provided.
7. The foodstuffs packaging according to claim 1 or 2, wherein the lid part has a trough, which is open in the upward direction and a cover which closes off the trough in the upward direction.
8. The foodstuffs packaging according to claim 7, wherein the cover is a sticker.
9. The foodstuffs packaging according to claim 7, wherein the lid part is provided with retaining depressions connected to the trough.
10. The foodstuffs packaging according to claim 9, wherein the trough and the retaining depressions have approximately the same depth.
11. The foodstuffs packaging according to claim 7, wherein the trough or the retaining depressions has a depth which is no greater than a maximum nesting height of the foodstuffs packaging.
12. The foodstuffs packaging according to claim 9, wherein the retaining depressions are offset laterally in relation to the shaped depressions.
13. The foodstuffs packaging according to claim 9, wherein the retaining depressions have an indent on their floor.
14. The foodstuffs packaging according to claim 9, wherein the clamping openings are formed by the retaining depressions.
15. The foodstuffs packaging according to claim 1 or 2, wherein the articles being packaged are eggs.
16. The foodstuffs packaging according to claim 1 or 2, wherein the clamping elevations and the clamping openings are respectively no higher or deeper than a maximum nesting height of 7 to 9 mm.
17. The foodstuffs packaging according to claim 1 or 2, wherein the clamping elevations and the clamping openings have a conicity of 7\xb0 to 9\xb0.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A shredded tobacco feeding apparatus for a cigarette manufacturing machine, comprising:
a feed passage extending to a tobacco band of the cigarette manufacturing machine;
supply means for causing shredded tobacco to fall to an inlet of said feed passage to supply the shredded tobacco to said feed passage;
pneumatic transport means for producing, in said feed passage, a flow of air flowing toward a suction surface of the tobacco band, to pneumatically convey the shredded tobacco fallen into the inlet of said feed passage by means of the air flow;
a separation chute having an upper end opening in the vicinity of the inlet of said feed passage, for receiving shredded tobacco that falls down across the air flow;
a separation passage having an upper end opening into said feed passage on a downstream side of said separation chute and having a lower end opening downward;
delivery means for collecting the shredded tobacco fallen into said separation chute and delivering the collected shredded tobacco to an intermediate portion of said separation passage, said delivery means sealing a junction between said separation chute and said separation passage in an airtight fashion;
introducing means for causing a flow of air flowing toward said feed passage to be produced in said separation passage at a location higher in level than the intermediate portion thereof, thereby allowing outside air to be introduced into said separation passage from the lower end thereof; and
detection means arranged in said separation passage at a location lower in level than the intermediate portion thereof, for detecting stagnation of the shredded tobacco delivered to said separation passage.
2. The shredded tobacco feeding apparatus according to claim 1, wherein said detection means includes:
a reflecting mirror arranged on one of opposite side walls defining a width of said separation passage and having a reflecting surface facing the other of the side walls; and
an optical sensor arranged on the other side wall and having a light emittingreceiving surface for emitting detection light to the reflecting surface and receiving the detection light reflected from the reflecting surface.
3. The shredded tobacco feeding apparatus according to claim 1, wherein said detection means includes optical sensors for emitting detection light from one of opposite side walls defining a width of said separation passage, and for receiving the detection light on the other of the side walls, respectively.
4. The shredded tobacco feeding apparatus according to claim 2, wherein said detection means includes air blowing means for ejecting air along at least one of the reflecting surface and the light emittingreceiving surface.
5. The shredded tobacco feeding apparatus according to claim 1, further comprising alarm means for providing a predetermined alarm when stagnation of the shredded tobacco in said separation passage is detected by said detection means.
6. The shredded tobacco feeding apparatus according to claim 1, further comprising removing means for removing stagnation of the shredded tobacco in said separation passage when the stagnation of the shredded tobacco is detected by said detection means.
7. The shredded tobacco feeding apparatus according to claim 6, wherein said separation passage is defined between two walls facing each other, and
said removing means vibrates one of the two walls to remove the stagnation of the shredded tobacco.
8. The shredded tobacco feeding apparatus according to claim 1, further comprising:
removing means for removing stagnation of the shredded tobacco in said separation passage when the stagnation of the shredded tobacco is detected by said detection means; and
alarm means for providing a predetermined alarm when the stagnation of the shredded tobacco in said separation passage is detected by said detection means.
9. The shredded tobacco feeding apparatus according to claim 4, wherein said separation passage is defined between two walls facing each other, and
said shredded tobacco feeding apparatus further comprises removing means for removing stagnation of the shredded tobacco in said separation passage by vibrating one of the two walls when the stagnation of the shredded tobacco is detected by said detection means.