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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Promotional leaflet for Lotus Fan & Dynamo Transmission Belts, detailing features, sizes, and prices.

Identifier  ExFiles\Box 55\2\  Scan183
Date  8th September 1924 guessed
  
FAN LOTUS BELTING

THE LOTUS FAN & DYNAMO TRANSMISSION BELT was specially designed to overcome the difficulties common with many types of Link Belts, namely, Stretching, Slipping and Wearing of the Vee Pulleys. The Lotus Belt cannot stretch, being a Steel Chain throughout. Both inner and outer links have raised cup bearings, giving perfect flexibility. The Side Plates are made of Rubber, ensuring perfect grip and silent running. Patented in Great Britain and abroad.

SIZES and PRICES
Width x Depth ... ...per foot s. d.{John DeLooze - Company Secretary}
1/2" x 1/2" ... ... ... " 3 3
9/16" x 9/16" ... ... ... " 3 6
5/8" x 9/16" ... ... ... " 4 0
3/4" x 3/4" ... ... ... " 5 6
7/8" x 3/4" ... ... ... " 6 0
1" x 3/4" ... ... ... " 6 6
1" x 7/8" ... ... ... " 7 0
1 1/4" x 1" ... ... ... " 8 0

Morris size Belt in Carton, 9s. 0d.

Terms on application. Carriage paid on orders amounting to over £3. Cases charged at cost and credited on return.

FAN LOTUS BELTING

Actual size of Link for 1 1/4" x 1" Belting
END SECTION

Actual size of Link for 1" x 7/8" Belting
END SECTION

Actual size of Links for 1" x 3/4", 7/8" x 3/4" and 3/4" x 3/4" Belting
END SECTIONS

Actual size of Links for 5/8" x 9/16" and 9/16" x 9/16" Belting
END SECTION

Section of Continuous Steel Chain shewing Raised Cup Bearings
  
  


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