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The foreground shows the mandrel for the base. Behind the finished vase are the spinning tools used to shape the metal. Metal spinning, also known as spin forming or spinning or metal turning most commonly, is a metalworking process by which a disc or tube of metal is rotated at high speed and formed into an axially symmetric part. [1]
Continuous tracks on a bulldozer A dump truck with continuous track wheels crosses a river and dumps its load in Kanagawa, Japan. An agricultural tractor with rubber tracks, mitigating soil compaction A Russian tracked vehicle designed to operate on snow and swamps A British Army Challenger 1 tank
The Farmall F-20 is a medium-sized two-plow row crop tractor produced by International Harvester under the Farmall brand from 1932 to 1939, with approximately 148,000 produced. It replaced the Farmall Regular , and was itself replaced in 1939 by the Farmall H .
The Ford N-series tractor helped revolutionize modern mechanized agriculture with its Ferguson three point hitch. A tractor is an engineering vehicle specifically designed to deliver a high tractive effort (or torque) at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction.
A wheel would be placed on the rear frame section of the truck, which at the time had only four wheels, making the additional wheel the "fifth wheel". The trailer needed to be raised so that the trailer's pin would be able to drop into the central hole of the fifth wheel. Fifth wheels were originally not a complete circle and were hand forged.
The modern racing sulky has shafts that extend in a continuous bow behind the driver's seat, with wire-spoked "bike" wheels and inflated tyres. [1] [2] A sulky is frequently called a "bike". Historically, sulkies were built for trotting matches and made from wood with very tall wheels and almost no body, just a simple frame supporting a single ...
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An articulated bogie (aka Jakob-type) is any one of a number of bogie designs that reduce weight, increase passenger comfort, and allow railway equipment to safely turn sharp corners, while reducing or eliminating the "screeching" normally associated with metal wheels rounding a bend in the rails. There are a number of such designs, and the ...