Camera focusing means

• US 4,602,860 A
• Filed: 02/06/1985
• Issued: 07/29/1986
• Est. Priority Date: 02/06/1985
• Status: Expired due to Term

• Current Assignee: Morris Hoffman
• Original Assignee: Morris Hoffman
• Inventors: Hoffman, Morris
• Primary Examiner(s): Hix, L. T.
• Assistant Examiner(s): Brown, Brian W.
• Application Number:
  US06/686,448
• Time in Patent Office: 538 Days
• Field of Search: 354/160, 354/189, 354/190, 354/191, 354/188, 355/40, 355/55
• US Class Current: 396/150
• CPC Class Codes: G03B 19/10 Plate or cut-film cameras with provision for alternative use with roll film G03B19/08
• CPC Class Codes: G03B 3/02 moving lens along baseboard

Abstract

In a camera of the flat bed type having a base, the camera being focused by looking at ground glass back viewing screen supported on a frame which is movable for focusing; means are provided to adjust the frame to simultaneously move the frame forward and backwards, sideways and rotatably for focusing the camera, and means are provided to lock the frame in position when the camera is focused. This invention combines four movements for the back of a folding type or flat bed camera. 1. A rising back, 2. shifting from side to side, 3. lateral swing and 4. tilting toward front or back. All these movements are achieved without using a center pivoting point. Doing it in a continuous working procedure, efficiently and with ease of movement with positive locking. The locking of the vertical movement clamping is accomplished on the sliding member and pivoting on the bottom axis. Means are provided for pivoting from either left or right side with its clamping means when camera is in focus.

Claims

1. In a camera of the folding or flat bed type having a base, a moveable frame, a box member, and the camera being focused by looking at ground glass viewing screen supported on the frame which is moveable for focusing, the viewing screen being mounted in the box member:

3. Apparatus as in claim 1 wherein the means for raising and the means for tilting comprises:

a first elongated support member pivotally mounted on the rear of the movable frame,

a first slot in the first support member,

a slide member mounted on the box member and sliding in the first slot,

a first screw mounted on the box and extending through the first slot and a first locking knob threadedly mounted on the first screw,

a second elongated support member pivotally mounted on the front of the movable frame,

a second slot in the second support member,

a second screw mounted in the box member and extending through the second slot and a second locking knob threadedly mounted on the second screw whereby the camera back may be raised vertically with or without tilting.

2. means mounted on the moveable frame for raising and means mounted on the base for tilting the said viewing screen, the tilting means being pivoted on the base, at the bottom of the frame, the tilting and raising means being separate and independent, whereby when the viewing screen is raised, the amount of tilt of the viewing screen remains constant, and means to lock the viewing screen in position after focusing.

4. In a camera of the flat bed type having a base, the camera being focused by looking at a ground glass back viewing screen in a box member supported on a frame having side sections which is movable for focusing:

slideable linkage means connected to the frame to adjust the frame to simultaneously move the frame forward and backward, sideways and rotatably for focusing the camera, and means for raising and tilting said viewing screen comprising a member fixedly mounted on the base, a first slotted member pivoted on said fixedly mounted member for raising the screen,

a second slotted member pivoted on said fixedly mounted member for tilting the screen,

and means connected to the frame to lock the viewing screen and frame in position after focusing.