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US 4,241,528 AGranted
Picture viewer
AssigneeLicinvest AG
InventorPeter Ackeret
Life of this patent
Estimating the term…
Abstract
A picture viewer having a housing to contain a pile of pictures, a slide in the housing, a window in the housing, a pressure plate confronting the window, springs mounting the plate, in certain embodiments biased to press the plate toward the window, and in other embodiments biased to retain the plate away from the window, a control to alternately move the plate against the spring bias or release the plate to alternately apply and relieve pressure on the pile of pictures, the control operating in response to withdrawal and return of the slider and also being manually operable.
Claims21
A picture viewer for a pile of pictures, comprising
- enclosure means including a frame defining a viewing window and a slider reciprocably mounted on the frame, the frame and slider having relative obverse and reverse sliding movements in opposite directions along the window, the enclosure means also defining a picture compartment having one end adjacent the window to contain a pile of pictures with a picture at one end disposed at said one end of the compartment and adjacent the window,
- a pressure means on the enclosure means and confronting the window at the compartment to press the pile of pictures against the viewing window,
- a picture changing mechanism adjacent the picture compartment for removing an individual picture from one end of the pile and returning the individual picture to the other end of the pile in response to such relative obverse and reverse movement of the frame and slider to present a new picture at the window for display,
- said picture changing mechanism including a pile transporter and an individual picture transporter, one of the transporters being connected with the frame and movable therewith and the other of the transporters being connected with the slider and movable therewith, the pile transporter being disposed at one side of the compartment to engage one side of the pile of pictures, the picture transporter being disposed at one end of the compartment to engage such an individual picture at the corresponding end of the pile of pictures, the transporters producing relative movement of the pile of pictures and of the individual picture during changing of the picture at the window, and
- a disabling device having functional connection with the pressure means and acting to alternately effect relief and application of pressure on the pile of pictures during operation of the picture changing mechanism to facilitate the change of pictures.
2 more elements
A picture viewer for a pile of pictures, comprising
- enclosure means including a frame defining a viewing window and a slider reciprocably mounted on the frame, the frame and slider having relative obverse and reverse sliding movements in opposite directions along the window, the enclosure means also defining a picture compartment having one end adjacent the window to contain a pile of pictures with a picture at one end disposed at said one end of the compartment and adjacent the window,
- a pressure means on the frame and including a plate confronting the window at the compartment to press the pile of pictures against the viewing window, the pressure means including a pressure spring resiliently urging the plate toward the window,
- a picture changing mechanism adjacent the picture compartment for removing an individual picture from one end of the pile of pictures and returning the individual picture to the other end of the pile in response to the relative obverse and reverse movement of the frame and slider to present a new picture at the window for display,
- a disabling device acting on the pressure means to alternately effect relief and application of spring pressure on the pile of pictures in response to operation of the picture changing mechanism to facilitate removal and return of the individual picture to the pile, the disabling device including a cam on the slider and moving along and against cam following edge portions of the pressure plate for drawing the pressure plate away from the window to relieve the pressure on the picture, and
- an additional disabling control movably mounted on the frame and protruding to the exterior thereof and having connection to the pressure spring of the pressure means to move the pressure spring and plate away from the window of the frame.
2 more elements
Dependencies are inferred from the claim text.