A
Dissertation
on the
Construction
of
Locks.
Containing,
First—Reaſons and Obſervations, demonſtrating all Locks, which depend on Fixed Wards, to be erroneous in Principle, and defective in Point of Security.
Secondly—A Specification of a Lock, conſtructed on a new and infallible Principle, which, poſſeſſing all the Properties eſſential to Security, will prevent the moſt ruinous Conſequences of House Robberies, and be a certain Protection againſt Thieves of all Deſcriptions.
By Joseph Bramah.
London:
Printed for the Author. Sold by R. Baldwin,
Pater-Noster-Row.
