General Information

Serial #

4088A1807

Part Number

1

Total Parts

4

AKA

N/A

Patents

N/A

General Description

.1 Body made of metal/ .2 Bulbs made of glass & metal/ .3 Lighting unit made of metal. Pts made of wood.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

N/A

Width

N/A

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Printing

Category

Duplication

Sub-Category

N/A

Manufacturer

AKA

Photostat

Country

United States of America

State/Province

New York

City

Rochester

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Used by Mapping Branch of federal department of Energy, Mines and Resources.

Function

Copies photographically any size material without intermediate negative. Reduces and enlarges.

Technical

Example of a photographic system once commonly used for copying documents. Main unit consists of the camera, which contains a roll of photosensitive paper, a built-in paper cutter, and trays containing fluids for developing and fixing the exposed image. A darkroom is not required. The resulting copy, or "photostat" is a negative image. The operator makes positives by copying this negative. Although focus and exposure settings are simplified, Photostat machines do require a trained operator. For this reason, and because the copying process is slow and the chemicals and paper expensive, Photostat machines were rendered obsolete by the perfection of dry process, electrostatic copiers like the Xerox.

Area Notes

Unknown

Details

Markings

.01: Photostat focusing chart reads: "CORRESPONDING/ DIMENSIONS OF/ PRINT TO BE/ MADE ON/ THE PHOTOSTAT/ [Scale based on size of the subject - diagram of chart]/ DIRECTIONS - LOCATE THE/ SELECTED DIMENSION OF THE/ SUBJECT TO BE COPIED ON THE CHART/ AT "SIZE OF SUBJECT" FROM THIS NUMBER/ FOLLOW TO THE RIGHT THE HORIZONTAL/ LINE TO ITS INTERSECTION WITH THE VERTICAL/ COLUMN HEADED BY THE NUMBER IN INCHES/ WHICH IS THE DESIRED CORRESPONDING DIMENSION/ OF THE PRINT. THE NUMBER AT THE INTERSECTION/ SHOWS THE PROPER PERCENTAGE SETTING ON THE/ FOCUSING SCALES OF THE PHOTOSTAT./ EXAMPLE - SUBJECT 28 INCHES LONG TO BE REDUCED/ TO 21 INCHES. FOLLOW LINE FROM 28 TO RIGHT TO INTERSECTION/ OF VERTICAL COLUMN HEADED 21, AND 75 IS THE SCALE SETTING/ FOR BOTH HORIZONTAL AND VERTICAL SCALES./ PHOTOSTAT/ REG. U.S. PAT. OFF./ FOCUSING CHART" Instructions plate reads: "INSTRUCTIONS/ NEVER ALLOW CHEMICALS TO STAND IN TRAYS OVER/ NIGHT. WHEN THRU DAY'S WORK, RINSE BOTH TRAYS/ WITH FRESH WATER./ USE HOT WATER FOR DEVELOPING TRAY IF AVAILABLE./ NEVER PUT HOT WATER IN HYPO TRAY./ WHEN NOT IN USE, CLOSE MAGAZINE, CLOSE BELLOWS/ TURN CURTAIN DOWN, RELEASE TENSION ROLLER./ WATER WILL REMOVE FRESH CHEMICAL STAINS. KEEP/ APPARATUS CLEAN." Manufacturer's plate reads: "NO.4 [number stamped in]/ PHOTOSTAT/ REG. U.S. PAT. OFF./ DESIGN 4088A1807 [number stamped in]/ MANUFACTURED BY/ PHOTOSTAT CORPORATION/ ROCHESTER, N.Y., U.S.A./ UNDER ONE OR MORE OF THE FOLLOWING UNITED STATES PATENTS/ 1793837/ 1802194/ 1811779/ 1818461/ 1818462/ 1824281/ 1834897/ 2065939/ 2109373/ 2124134/ 2142853/ 2236712"

Missing

Lens From CA of 03/15/2002 by David Daley: No - Complete

Finish

Walnut wood grain finish.

Decoration

N/A