Passenger cars were made to suit doctors and wealthy businessmen, and commercial vehicles were produced for duty as delivery vans, ambulances, and hearses.

[2] After resigning in January 1904, he filed a master patent in May 1904 for a Chambers car featuring coil springs and a twin cylinder transverse engine with chain drive.

[3] Production was undertaken in Cuba Street, Belfast,[4] in association with Jack's brothers Robert and Charlie who had been operating as millwrights from 1897.

[1] With no military orders for vehicles and massively reduced civilian demand, the company turned to munitions (such as shell cases and percussion caps for hand grenades),[4] and aircraft components (for Avro 504 biplanes).

[1] Expensive retooling, a growing reliance on other manufacturers for components and increasing competition from mass-produced cars eventually lead to the operation being voluntarily wound up in 1929.