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Trade catalogs and pattern books were propelled by the printing press. Although its origin is unknown, historians believe that the oldest known version was invented in China around 1000 AD. Printing was refined in China in 1297, leading to the mass production of books, and 150 years later the Gutenberg printing press appeared in 1440 in Germany ...
Vulcan Works, Thornton Road, Bradford, ca 1888, founded by Robinson Thwaites, was one of several Victorian era iron mills sharing the name; like many others, it made a wide variety of machinery including mining equipment and locomotives
The parts included in the typical US mortise lock installation are the lock body (the part installed inside the mortise cut-out in the door); the lock trim (which may be selected from any number of designs of doorknobs, levers, handle sets and pulls); a strike plate (or box keep), which lines and reinforces the cavity in the door jamb or frame ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 January 2025. Device to open or close door Various examples of door handles throughout history A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including: exterior doors of residential and commercial buildings, internal doors, cupboard ...
Higher security lever locks (such as the five-lever) usually have notches cut into the levers. These catch the locking bolt and prevent it from moving if picking is attempted (similar to the security pins in a pin tumbler lock). The Chubb detector lock is a variation of the lever lock which was designed to detect and prevent picking attempts.
When the correct key is inserted, it will clear the wards and rotate about the center post. The key may then strike a lever, activating a latch or sliding bolt, or it may itself push against the latch or bolt. In a double acting lever lock, the key may additionally push against a spring-loaded lever which holds the sliding bolt in place.
A Suffolk latch is a type of latch incorporating a simple thumb-actuated lever and commonly used to hold wooden gates and doors closed. Comparison of Suffolk and Norfolk latches. The Suffolk latch originated in the English county of Suffolk in the 16th century and stayed in common use until the 19th century.
The ESTC began life as the Eighteenth-Century Short Title Catalogue, with the same abbreviation, covering only 1701 to 1800.Earlier printed works had been catalogued in A. W. Pollard and G. R. Redgrave's Short Title Catalogue (1st edn 1926; 2nd edn, 1976–91) for the period 1473 to 1640; and Donald Goddard Wing's similarly titled bibliography (1945–51, with later supplements and addenda ...