Bramah Lock Cylinder.
Bramah locks, designed and first manufactured by
Joseph Bramah in 1784, were probably the first commercially
produced cylinders to offer good security against manipulation,
perhaps even measured against today's standards.
Joseph Bramah's interests went well beyond locks; among his
other inventions include the first beer pump, a flush toilet,
a hydraulic pump, and a number of industrial machine tools.
An updated version of the original lock design is still
produced and sold by Bramah Security Equipment, London
(owned by Jeremy Bramah). These locks are produced in
relatively small quantity and are not inexpensive
(a rim cylinder retails for about $100US); they seem to be
aimed primarily at the high-end residential and commercial
The basic design could be described a tubular cylinder
(the type commonly found on vending machines and
U-shaped bicycle locks) whose tumblers (called "sliders")
are more like wafers than pins. The current design uses
seven sliders. Versions have been produced with as many
Image taken with a Nikon D-100 digital camera with a Nikkor
85mm 1:2.8D tilt/shift macro lens (with Kenko extension tube).
Lit by electronic flash and various reflectors.
Copyright © 2003 by Matt Blaze. All rights reserved.
You may not copy, modify or use this image for any commercial or
non-commercial purpose without permission.
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