Image: Two-stroke deflector piston (Autocar Handbook, 13th ed, 1935)

Description: How the ports are arranged in a two-stroke motor cycle engine. Either a deflector piston or a special arrangement of tangentially inclined ports may be used to admit the fresh charge (solid arrows) and keep it from contamination with the burnt gases seen exhausting (dotted arrows).
Title: Two-stroke deflector piston (Autocar Handbook, 13th ed, 1935)
Credit: Scan from The Autocar (Thirteenth edition, circa 1935) Autocar Handbook, London: Iliffe & Sons., pp. p. 26
Author: Andy Dingley (scanner)
Permission: Public domainPublic domainfalsefalse This UK artistic work, of which the author is unknown and cannot be ascertained by reasonable enquiry, is in the public domain because it is one of the following: A photograph, which has never previously been made available to the public (e.g. by publication or display at an exhibition) and which was taken more than 70 years ago (before 1 January 1950); or A photograph, which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January 1950); or An artistic work other than a photograph (e.g. a painting), which was made available to the public (e.g. by publication or display at an exhibition) more than 70 years ago (before 1 January 1950).  This tag can be used only when the author cannot be ascertained by reasonable enquiry. If you wish to rely on it, please specify in the image description the research you have carried out to find who the author was.  The above is all subject to any overriding publication right which may exist. In practice, Publication right will often override the first of the bullet points listed. Unpublished anonymous paintings remain in copyright until at least 1 January 2040. This tag does not apply to engravings or musical works. More information You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
Usage Terms: Public domain
License: Public domain
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