General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Mahogany/ Wood/ Cast iron.

Dimensions

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

Length

64.7 cm

Width

44.4 cm

Height

116.8 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Photography

Category

Still processing

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Unknown

State/Province

Unknown

Period

Unknown

Canada

Elwood-type enlargers were an inexpensive design and were popular for use in small portrait studios.

Function

Used to project an enlarged image from a negative onto a sheet of photographic paper.

Technical

This enlarger, invented by Elwood C. Rogers of Indianapolis, Indiana, is designed to evenly illuminate the negative and projected field, which consequently avoids uneven heating of the negative and possible warping of film negatives or breaking of glass negatives. In order to achieve these objectives, Rogers used a frosted or coated light bulb as the light source, as well as a non-diffusing reflector (or polished reflective surface). Between the negative and reflector, Rogers inserted a sand blasted glass screen to correct inequalities in the light rays which would otherwise pass through the negative. The rougher, more heavily blasted surface in the centre of the screen provided more diffusion of the strong, direct light rays from the bulb. According to the Focal Encyclopedia of Photography (1969), the resulting soft, diffused light produced by this type of enlarger tended to "subdue fine image detail, especially blemishes." This enlarger is also able to project both vertically and horizontally.

Area Notes

Unknown

Details

Markings

Patent info. engraved in wood reads: "PAT NO 1633228"

Missing

No lens. Glass diffuser screen appears to be missing.

Finish

Mahogany negative carrier, separate/ Incandescent light source/ Miscellaneous wood parts, separate/ Stand is cast iron painted black/ Stand is mounted on a rough wooden base/ On-off switch in the middle of the cord/ Fair condition.

Decoration

N/A