Sheet feeding or delivering – Feeding – Pack holders
Patent
1992-07-21
1995-04-04
Bollinger, David H.
Sheet feeding or delivering
Feeding
Pack holders
271162, 74 20, 74 21, B65H 100
Patent
active
054029970
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for opening and closing a sheet-film cassette with two cassette portions connected by a hinge and a locking member pivotally mounted at the free end of the cassette lid, said device comprising an unlocking member associated with said locking member and spring-biased pressure bolts associated with the area of the locking member and acting vertically on the cassette lid as well as an opening element pivoting the cassette lid into its open position.
In a device of this type, which has been disclosed in DE-37 17 786-A1, the closing force of the cassette's locking mechanism is reduced in that the lid is depressed by means of pressure bolts so that said mechanism can be operated without much force being exerted and without being subjected to much wear and tear. The unlocking member of this known device is guided over a constant path of movement so that it cannot be adapted to different tolerance-dependent positions of the locking member to be engaged.
It is the object of the invention to provide a device of the generic type such that the unlocking member always engages the locking member of the cassette in a position not affected by tolerance variations.
In accordance with the invention this object is obtained in that plate, in parallel with the free end of the cassette lid and
According to a useful modification of the invention the opening element has the shape of an angular lever which engages below the cassette lid and is pivotably associated with said lid such that it is brought into a functionally useful position in response to the position of the unlocking member and the position of the support element respectively.
According to a further useful modification the support element is attached to the free ends of stationarily mounted arms and is moved up and down by a lever gear driven by a motor.
In a particularly advantageous manner the unlocking member is provided with a wedge-shaped spring-biased operating element which is movably mounted and has a concave operating surface.
Further features and advantages can be inferred from the description of an embodiment illustrated in the drawing and from the subclaims. The drawing shows schematically in
FIG. 1 an oblique view of the device with the cassette in its open position;
FIG. 2 a partial view of the device according to FIG. 1;
FIG. 3 a partial view of the device according to FIG. 2, showing a longitudinal section along line B--B, however at the beginning of the unlocking operation;
FIGS. 4 longitudinal sectional views taken along line A--A of the device to 9 according to FIG. 1 and illustrating the different steps of the unlocking, opening and closing operations.
The device according to the invention forms part of a known unit not illustrated for automatically loading and unloading X-ray sheet film cassettes 1 wherein an exposed sheet film is removed from a cassette 1 and fed to a film processing unit not illustrated whereupon the empty cassette 1 is loaded with another sheet film which has been removed from a supply magazine arranged within the unit.
The known cassette 1 which is to be handled consists of two cassette portions 1a, 1b which are connected by a hinge if and can be locked in their closing position by a locking member 1c. The locking member 1c which is pivotally mounted on the cassette lid 1b and spring-biased in the direction of closing engages a locking hook 1d arranged in the lower portion 1a of the cassette, see in particular FIG. 3. The cassette portions 1a, 1b are closable in opposition to an inherent bias which causes the cassette portions 1a, 1b to snap open easily when cassette 1 is unlocked. In the area of locking member 1c, lid 1b is provided with a recessed portion 1e which allows the operator to reach below locking member 1c.
By known means not illustrated cassette 1 is moved in the direction of the arrow "C" up to an abutment member 30 provided at the end side. Lateral alignment elements not illustrated align the cassette 1 in a central position so that the centrally arranged locking member 1c is p
REFERENCES:
patent: 4895357 (1990-01-01), Lippold
patent: 5145166 (1992-09-01), Neudecker et al.
patent: 5149078 (1992-09-01), Matsuda et al.
Scholpple Gunther
Ueffinger Friedrich
Bollinger David H.
Eastman Kodak Company
Schmidt Dana M.
LandOfFree
Device for opening and closing a sheet-film cassette does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for opening and closing a sheet-film cassette, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for opening and closing a sheet-film cassette will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2376274