Harvard Lock Company

Harvard Lock Company 

Reading, Pennsylvania, USA

Established ~1925

While the Harvard Lock Company did not produce a wide range of restraints, they also produced ships bells. When brass and bronze were in short supply during the war period, Harvard Lock Company made cast iron bells. 

Here is a link to a recent auction of a rare Harvard Lock Company combination restraint, along with some background information on the firm. 

https://vintagerestraints.blogspot.com/2026/05/harvard-lock-company-transport.html?m=1

Here is a selection of their bells, below.