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a throttle lever or regulator, which controls the amount of steam entering the cylinders [3]: 75 : 82 a reversing lever or (US term) Johnson bar, which controls the timing of the admission of steam into the locomotive's cylinders. [3]: 65 This is required for two purposes. One is to reverse the locomotive's direction, e.g. when shunting.
The Victorian Railways decided to convert two AS carriages, and so in autumn of that year cars 12AS and 13AS were altered to composite carriages 1ABS and 2ABS respectively. Each car retained the existing compartments at the first class end, but had second-class seats installed in the other half, providing accommodation for a total of 24 first ...
A backplate with threads may screw onto a threaded spindle nose (for lathe work) or onto an adapter plate with the same nose, to be mounted on the table of milling machines or surface grinding machines. This "threaded spindle nose" type of mounting was the typical method in the 19th century through 1930s.
A common form is the constant lead cam, where the displacement of the follower is linear with rotation, such as the scroll plate in a scroll chuck. Non-invertible functions, which require the groove to self-intersect, can be implemented using special follower designs. Sash window lock, traditional cam style, for double-hung sash window
Victorian architecture is a series of architectural revival styles in the mid-to-late 19th century. Victorian refers to the reign of Queen Victoria (1837–1901), called the Victorian era, during which period the styles known as Victorian were used in construction. However, many elements of what is typically termed "Victorian" architecture did ...
A locomotive's direction of travel and cut-off are set from the cab by using a reversing lever or screw reverser actuating a rod reaching to the valve gear proper. Some larger steam engines employ a power reverse, which is a servo mechanism, usually powered by steam. This makes control of the reversing gear easier for the driver.
Applications of single scroll forms can be seen in the volutes at the head of an Ionic column, the carved scroll at the end of the pegbox on instruments in the violin family (resembling fiddleheads in nature), and the heads of many Western crosiers. Scrollwork is a technique used in cake decorating. "Albeit a bit baroque, scrollwork lends a ...
Small, horizontal lames that protect the small of the back or the buttocks, attached to a backplate or cuirass. Arm: Couter or cowter: Plate that guards the elbow. Eventually became articulated. May be covered by guard of vambrace (see below). Spaulder: Bands of plate that cover the shoulder and part of upper arm but not the armpit. Pauldron: 15th