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US 4,045,014 AGranted
Sheet film magazine for an X-ray film exchanger
AssigneeSiemens Aktiengesellschaft
InventorRonny Karlsson
Life of this patent
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AssigneeSiemens Aktiengesellschaft
InventorRonny Karlsson
Estimating the term…
A sheet film magazine for an X-ray film exchanger includes a housing with a chamber, a drum rotatably mounted in the chamber with a portion urged toward the cylindrical surface with the teeth resting thereon. A leading end of each sheet inserted into the chamber is guided between the cylindrical surface and the belt. Thd drum and belt are driven in a stepwise manner with the distance of movement of the surface of the drum and the belt being equal to the distance between adjacent teeth on the belt.
A sheet film magazine for an X-ray film exchanger which has means for transporting individual unexposed sheets of film received from the magazine to an exposure station, said magazine having a housing with a chamber, a drum mounted for rotation in the chamber and having a cylindrical surface, a belt having a set of teeth spaced along one surface thereof, means for mounting the belt for movement along a path in the chamber with a portion of the belt being biased toward a portion of the cylindrical surface and the spaced teeth being urged into engagement with said portion of the cylindrical surface, means disposed in said housing for guiding a leading edge of an inserted sheet of film between the belt and cylindrical surface, and drive means connected to one of said means for mounting and the drum for rotating the drum and moving the belt in said path with the surface of the drum and the belt moving together in an incremental step-like manner with each step having a distance equal to the distance between adjacent teeth on the belt, so that a portion of each sheet of film inserted into the magazine is engaged between the cylindrical surface and the belt and the leading edges of adjacent sheets are offset from each other a distance equal to the distance between adjacent teeth.
Dependencies are inferred from the claim text.
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Using X-rays: apparatus for direct X-ray cinematography
Holders for X-ray films: apparatus for loading or unloading the holders
Apparatus or arrangements for taking photographs or for projecting or viewing them
Term ended 30 Aug 1994 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
The present invention is directed to a sheet film magazine for an X-ray film exchanger which magazine stores the sheets of film between a cylindrical surface of the drum and a belt coacting therewith.
2. Prior Art
FIG. 1 is a cross-sectional view with portions in elevation for purposes of illustration of a sheet film magazine in accordance with the present invention;
FIG. 2 is an enlarged cross-sectional view with portions in elevation for purposes of illustration of an embodiment of a magazine in accordance with the present invention;
FIG. 3 is a cross-sectional view with portions in elevation for purposes of illustration of a second embodiment of a magazine in accordance with the present invention; and
The principles of the present invention are particularly useful in a sheet film magazine 1 illustrated in FIG. 1 which is utilized in connection with a film exchanger 2.
The magazine 1 comprises a housing 3 which is provided with a lid 4 attached to the housing by a hinge, and the lid 4 enables inserting individual sheets of film into an insertion slot or guide passage 12 during loading of the magazine 1. The housing 3 is illustrated as being formed of a plurality of sheet members joined together to provide the insertion passage 12, a reception chamber 13 and a chamber 51. It should be realized that the housing may be constructed of sheet members along with molded or solid members to obtain the desired configuration.
Magazine 1 includes a transport system for transporting individual unexposed sheets of film into the film exchanger 2. This transport system comprises a drum 5 which is mounted for rotation in the chamber 51 and an endless tooth belt 10. The drum 5 has a cylindrical surface with a portion being embraced by the endless tooth belt 10 which is supported by mounting means illustrated as four rollers 6, 7, 8 and 9. As illustrated, the endless tooth belt 10 has a first set of teeth spaced along one surface and a second set of teeth spaced on the opposite surface and aligned with the first set. The rollers 6 through 9, which have spaced grooves for receiving the second set of teeth, determine the path of movement of the endless belt 10 and as the belt moves along its path, a portion 10a of the belt which portion extends between rollers 6 and 9 is urged into engagement with the cylindrical surface of the drum 5 with the teeth facing the drum resting thereon. To urge portion 10a against the cylindrical surface of the drum 5, the rollers 6 and 9 are preferably mounted in the chamber 51 by means which biases or urges them toward the drum 5.