The use of pulleys to make it possible to lock and unlock doors.

An engraving depicting the use of pulleys to make it possible to lock and unlock doors without getting out of bed. Dated 19th century. (Photo by: Universal History Archive/Universal Images Group via Getty Images)
An engraving depicting the use of pulleys to make it possible to lock and unlock doors without getting out of bed. Dated 19th century. (Photo by: Universal History Archive/Universal Images Group via Getty Images)
The use of pulleys to make it possible to lock and unlock doors.
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Credit:
Universal History Archive / Contributor
Editorial #:
1130661313
Collection:
Universal Images Group
Date created:
02 January, 1836
Upload date:
Licence type:
Rights-managed
Release info:
Not released. More information
Source:
Universal Images Group Editorial
Object name:
917_05_wha_136_0074.jpg
Max file size:
5587 x 3754 px (47.30 x 31.78 cm) - 300 dpi - 12 MB