Help identifying window operator U.K. PAT. 2135397

A quick learner from San Diego, CA says:
I am looking for a replacement window operator and I am hoping someone can help me find it. I have attached several pictures which could help identify it, the only writing on is U.K. PAT. 2135397.

Thank you
User submitted picture of window operator UK PAT 213597.
Profile picture of Donna
Donna from SWISCO responded:
Please see SWISCO product code 39-312, Awning Operator. Compare the measurements and let us know what you think.
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