Simplex projector head assembly used in Australian cinema

Made in United States, North and Central America, 1925-1955.

The Simplex projector was designed with extraordinarily high tolerance on parts - up to ten - thousandths of an inch on critical components. This and other innovations led to its commercial success and adoption as the industry standard projector by the late 1920s. The design of the Simplex projector underwent modifications and developments over forty years of production however in this time it retained much of what had made it such a successful design.

This particular projector head assembly wa...


Object No.


Physical Description

Projector, Simplex projector head assembly and parts, metal / glass / plastic, designed and made by The Precision Machine Co, New York, United States of America, 1925-1955

Simplex 35mm projector head assembly with Westrex shutter blade assembly.

Small collection of 7 tagged used parts removed from working St. James Theatre projectors around 1956.

Spare or used film advance mechanism from Simplex projector head assembly in shipping crate.
Upper film reel holder for mounting on top of Simplex head.



Due to extraordinary tolerances in the design and machining of critical parts for the Simplex projector it became the industry standard in a short time. This machine with the spring arrangement on the lens mount was produced from 1919.





Collected by Robert James Lucas. Possibly retained after removal from St. James theatre, Sydney in late 1950s. Retained by the Lucas family until its donation.


Credit Line

Gift of the Lucas family, 2007

Acquisition Date

28 November, 2007

Cite this Object


Simplex projector head assembly used in Australian cinema 2014, Museum of Applied Arts & Sciences, accessed 23 January 2018, <>


{{cite web |url= |title=Simplex projector head assembly used in Australian cinema |author=Museum of Applied Arts & Sciences |access-date=23 January 2018 |publisher=Museum of Applied Arts & Sciences, Australia}}

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