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Timmis was an innovative design of double coiled springs, originally used for railway rolling stock, such as on the Barsi Light Railway c1889, as formulated by Everard Calthrop (1857–1927).
The inventor was Illius Augustus Timmis [1]
US Patent 432341 was filled in 1889 and published in 1890. [1]
A bogie is a chassis or framework that carries a wheelset, attached to a vehicle—a modular subassembly of wheels and axles. Bogies take various forms in various modes of transport. A bogie may remain normally attached or be quickly detachable. It may include a suspension component within it, or be solid and in turn be suspended ; it may be mounted on a swivel, as traditionally on a railway carriage or locomotive, additionally jointed and sprung, or held in place by other means.
The term rolling stock in the rail transport industry refers to railway vehicles, including both powered and unpowered vehicles: for example, locomotives, freight and passenger cars, and non-revenue cars. Passenger vehicles can be un-powered, or self-propelled, single or multiple units. A connected series of railway vehicles is a train.
A coil spring is a mechanical device which is typically used to store energy and subsequently release it, to absorb shock, or to maintain a force between contacting surfaces. They are made of an elastic material formed into the shape of a helix which returns to its natural length when unloaded.
A leaf spring is a simple form of spring commonly used for suspension in wheeled vehicles. Originally called a laminated or carriage spring, and sometimes referred to as a semi-elliptical spring, elliptical spring, or cart spring, it is one of the oldest forms of vehicle suspension. A leaf spring is one or more narrow, arc-shaped, thin plates that are attached to the axle and chassis in a way that allows the leaf spring to flex vertically in response to irregularities in the road surface. Lateral leaf springs are the most commonly used arrangement, running the length of the vehicle and mounted perpendicular to the wheel axle, but numerous examples of transverse leaf springs exist as well.
A buffer is a part of the buffers-and-chain coupling system used on the railway systems of many countries, among them most of those in Europe, for attaching railway vehicles to one another.
In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is known as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is known as cold rolling. In terms of usage, hot rolling processes more tonnage than any other manufacturing process, and cold rolling processes the most tonnage out of all cold working processes. Roll stands holding pairs of rolls are grouped together into rolling mills that can quickly process metal, typically steel, into products such as structural steel, bar stock, and rails. Most steel mills have rolling mill divisions that convert the semi-finished casting products into finished products.
The Indian Railway Service of Mechanical Engineering, abbreviated as IRSME, is one of the group 'A' central engineering services of the Indian railways. The officers of this service are responsible for managing the Mechanical Engineering Division of the Indian Railways. Till 2019, IRSME officers were drawn from the Combined Engineering Service Examination (ESE) and Special Class Railway Apprentice (SCRA) examination conducted by Union Public Service Commission. All appointments to the Group 'A' services are made by the president of India.
For servicing suburban commuter lines, electrified on 25 kV, AC, the Railcar Manufacturing Plant of Riga produced ER9, then ER9P and other modifications of electric trainsets in the 1962-2002 period. The mass production of these trains had begun in 1964.
Everard Richard Calthrop was a British railway engineer and inventor. Calthrop was a notable promoter and builder of narrow-gauge railways, especially of 2 ft 6 in narrow gauge, and was especially prominent in India. His most notable achievement was the Barsi Light Railway, but he is best known in his home country for the Leek and Manifold Valley Light Railway. Calthrop has been described as a "railway genius". Later in life he took an interest in aviation, patenting some early designs for parachutes.
Barsi Light Railway (BLR) was a 202-mile (325 km) long, 2 ft 6 in (762 mm) narrow-gauge railway between Miraj and Latur in the state of Maharashtra in India. It was the brainchild of British engineer Everard Calthrop, and regarded as having revolutionised narrow-gauge railway construction in India.
The Derbyshire Dales Narrow Gauge Railway (DDNGR) was a short, 2 ft narrow-gauge railway located at Rowsley South at Peak Rail. It operated ex-industrial diesel locomotives and carriages.
Flexicoil suspension is a type of secondary suspension for railway vehicles, typically having steel coil springs between the bogie trucks and chassis/frame of a passenger coach, goods freight wagon, or locomotive. Suspension systems using steel springs are more common than those with air springs, as steel springs are less costly to make, relatively wear resistant, and require less maintenance.
The South African Railways Class 8X 2-8-0 of 1901 was a steam locomotive from the pre-Union era in the Cape of Good Hope.
National Steel Car is the largest manufacturer of railway rolling stock in Canada, based in Hamilton, Ontario. The company was founded in 1912, and has been a top 3 rolling stock manufacturer in Canada for its lifetime. National Steel Car is a subsidiary of National Industries Inc. and is currently led by Greg Aziz, chairman and CEO of National Steel Car.
Buffers and chain couplers are the de facto International Union of Railways (UIC) standard railway coupling used in the EU and UK, and on some railways in other parts of the world, such as in South America and India, on older rolling stock. Buffers and chain couplers are an assembly of several devices: buffers, hooks and links, or turnbuckle screws.
An equalising beam, equalising lever or equalising bar links the suspension of two or more adjacent axles of a vehicle, especially a railway locomotive.
Indian Railways operates India's railway system and comes under the purview of the Ministry of Railways of Government of India. Indian Railways operates more than 4000 cargo and goods trains daily. It hauls variety of cargo to cater to various requirements and have specialized rolling stock corresponding to the cargo hauled. Indian Railways uses a specific wagon numbering system, adopted in 2003.
Timmis may refer to:
Valley Heights Steam Tram Rolling Stock is a heritage-listed collection of tramway machinery at 17b Tusculum Road, Valley Heights, City of Blue Mountains, New South Wales, Australia. It was built from 1889 to 1891. The property is owned by Steam Tram and Railway Preservation (Co-op) Society. It was added to the New South Wales State Heritage Register on 21 October 2016.
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