General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

all metal construction

Dimensions

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

Length

30.0 cm

Width

20.5 cm

Height

23.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Domestic Technology

Category

Food processing

Sub-Category

N/A

Manufacturer

AKA

Borg Warner

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

North America

State/Province

Unknown

Period

This type used c. 1936+

Canada

Part of a collection of refrigeration parts and service items from Dr. G. Leslie Oliver. Dr. Oliver added to and documented a collection begun by his late father, of household and automobile technology. Dr. Oliver's father, T.H. Oliver established a refrigeration & electric service business in Aurora, Ont. 1924, the first and oldest such organization in York Region. In 2000, the business was sold but continues to operate under the T.H. Oliver name.

Function

To compress the refrigerant gas in order to raise it's pressure and temperature.

Technical

Like other types of compressors, the rotary compressor takes low temperature, low pressure gas and converts it into a high temperature, high pressure gas. The pumping effect necessary to accomplish this is produced by a rotary motion. Advantages of this type of compressor include strength of materials [of construction], durability and reduced vibration. [Ref. 3] Norge's "Rollator" obtained compression by means of an eccentrically-driven roller, moving in a gyratory manner in a closed cylinder. Of note is the absence of discharge valves to prevent high pressure refrigerant vapour from flowing back through the compressor during the "off" cycle. (Ref. 2, pp. 213-217]

Area Notes

Unknown

Details

Markings

"ROLLATOR/ MADE IN USA" cast in raised print on exposed end of casing. "B62320" / F3" stamped into casing. "EC", "30", "N" and "91" stamped into perimeter of casing. "9" and "X" cast in raised print on casing back. "CC15" and "7 6" (?) stamped into casing support.

Missing

Drive wheel missing. Missing attachment at flat plate at proper right side.

Finish

Original finish completely obscured by aluminium-coloured paint applied to most surfaces.

Decoration

N/A