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A lever corkscrew. The lever or "rabbit" corkscrew is operated using a pair of handles which are used to grip the neck of the bottle, and a lever which is simply pressed down to twist the screw into the cork, then lifted to extract the cork. Expelling the cork from the device is done with a similar press/lift action. [11]
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.
Double-paddle keys have one arm for each of the two contacts, each arm held away from the common center by a spring; pressing either of the paddles towards the center makes contact, the same as pressing a single-lever key to one side. For double-paddle keys wired to an "iambic" keyer, squeezing both paddles together makes a double-contact ...
Graph_level_structure.pdf (685 × 283 pixels, file size: 65 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
Janney Type E double-shelf couplers are yet another variety, typical on North American hazardous material tank cars. [19] [20] [21] The Janney coupler is commonly used on railway couplings, as it is strong and locks automatically. Janney coupler was patented by Eli Janney after the US Civil War. The Janney interlocking coupling system is much ...
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.