The design of a mechanical interlocking frame is much like a mechanical puzzle, but once understood, the principles can be applied to any track and signal arrangement.

Structural, mechanical, and electrical engineers and other specialists, are hired by the client or the architect, who must ensure that the work is co-ordinated to construct the design.

It was first described in 1837 as the successor to Babbage's Difference Engine, a design for a mechanical computer.

Swedish engineers Georg and Edvard Scheutz, inspired by a description of the difference engine, created a mechanical calculation device based on the design in 1853.

The mechanical and logic design was worked out by Dr. Atanasoff over the next year.

They quickly became the Achilles ' heel of the system because of their combination of an overly complex mechanical design with a very low-cost internal flex circuit system.

In the early 1860s, Frenchmen Pierre Michaux and Pierre Lallement took bicycle design in a new direction by adding a mechanical crank drive with pedals on an enlarged front wheel ( the velocipede ).

Eversharp, a maker of mechanical pencils, teamed up with Eberhard Faber in May 1945 to license the design for sales in the United States.

Bistability as applied in the design of mechanical systems is more commonly said to be " over centre " -- that is, work is done on the system to move it just past the peak, at which point the mechanism goes " over centre " to its secondary stable position.

A system can be mechanical, electrical, fluid, chemical, financial and even biological, and the mathematical modeling, analysis and controller design uses control theory in one or many of the time, frequency and complex-s domains, depending on the nature of the design problem.

Control engineering is the engineering discipline that focuses on the modeling of a diverse range of dynamic systems ( e. g. mechanical systems ) and the design of controllers that will cause these systems to behave in the desired manner.

Also includes an e-book library of classic texts on mechanical design and engineering.

He was followed by Gottfried Leibniz who spent forty years designing a four-operation mechanical calculator, inventing in the process his leibniz wheel, but who couldn't design a fully operational machine.

Although Babbage's design was technically feasible, no one had built a mechanical device to such exacting standards before, so the engine proved to be much more expensive than anticipated.

Diesel's inventions have three points in common: they relate to heat transfer by natural physical processes or laws ; they involve markedly creative mechanical design ; and they were initially motivated by the inventor's concept of sociological needs.

As turbocharged or supercharged engines produce more power for a given engine size as compared to naturally aspirated engines, attention must be paid to the mechanical design of components, lubrication, and cooling to handle the power.

Also includes an e-book library of classic texts on mechanical design and engineering.

Very different mathematical treatments apply to the design of filters termed infinite impulse response ( IIR ) filters, characteristic of mechanical and analog electronics systems, and finite impulse response ( FIR ) filters, which can be implemented by discrete time systems such as computers ( then termed digital signal processing ).

In addition, an open bolt indicator, such as the yellow safety flag distributed by CMP may be inserted in the barrel ( needed if the firearm design lacks a mechanical hold-open device ).

Geotechnical engineering uses principles of soil mechanics and rock mechanics to investigate subsurface conditions and materials ; determine the relevant physical / mechanical and chemical properties of these materials ; evaluate stability of natural slopes and man-made soil deposits ; assess risks posed by site conditions ; design earthworks and structure foundations ; and monitor site conditions, earthwork and foundation construction.

The series of cards could be changed without changing the mechanical design of the loom.

One original design incorporated a large, heavy, solid iron flywheel with a mechanical friction brake, developed by John Harrison of Leichhardt Rowing Club in Sydney, later to become a Professor of Mechanical Engineering at the University of New South Wales.

Because of the compact size of the pistons and mechanical simplicity of design, these models are typically not as large or as expensive as the others types.

He was early exposed to the mechanical world, and in his youth often helped his father, David Brown, master clock and watchmaker, as he plied his trade.

Perhaps the outstanding standard bearer of Mr. Brown's tradition for accuracy was Mr. Oscar J. Beale, whose mechanical genius closely paralleled that of Mr. Brown, and whose particular forte was the development of the exceedingly accurate measuring machinery that enabled Brown & Sharpe to manufacture gages, and therefore its products, with an accuracy exceeding anything then available elsewhere in the world.

A big mechanical ditcher was running the trenches, and the town building inspector was paying a friendly, if curious, visit.

One of the important aspects of this study was to determine the oxygen transfer relationships of the mechanical aerator.

Once regarded as an agricultural nuisance, psyllium was sold in the 1930's as a mechanical laxative under 117 different brands.

The simple mechanical strain of overweight, says New York's Dr. Norman Jolliffe, can overburden and damage the heart `` for much the same reason that a Chevrolet engine in a Cadillac body would wear out sooner than if it were in a body for which it was built ''.

In the era of mechanical calculation it was common to

" The term made an impact into English pulp science fiction starting from Jack Williamson's The Cometeers ( 1936 ) and the distinction between mechanical robots and fleshy androids was popularized by Edmond Hamilton's Captain Future ( 1940 – 1944 ).

The Analytical Engine was a proposed mechanical general-purpose computer designed by English mathematician Charles Babbage.

Babbage's first attempt at a mechanical computing device, the Difference Engine, was a special-purpose calculator designed to tabulate logarithms and trigonometric functions by evaluating finite differences to create approximating polynomials.

The input ( programs and data ) was to be provided to the machine via punched cards, a method being used at the time to direct mechanical looms such as the Jacquard loom.

After James Prescott Joule had determined the mechanical equivalent of heat, Lord Kelvin approached the question from an entirely different point of view, and in 1848 devised a scale of absolute temperature which was independent of the properties of any particular substance and was based solely on the fundamental laws of thermodynamics.

He compiled a survey of mirror configurations in his work on remarkable mechanical devices which was known to Arab mathematicians such as Ibn al-Haytham.

The Norden bombsight was a highly sophisticated optical / mechanical analog computer used by the United States Army Air Force during World War II, the Korean War, and the Vietnam War to aid the pilot of a bomber aircraft in dropping bomb s accurately.

It was " intended to afford a medium for the presentation and analysis of any and all questions of interest or importance in pure and applied Mathematics, embracing especially all new and interesting discoveries in theoretical and practical astronomy, mechanical philosophy, and engineering ".

In 1450, the Italian art architect Leon Battista Alberti invented the first mechanical anemometer ; in 1664 it was re-invented by Robert Hooke ( who is often mistakenly considered the inventor of the first anemometer ).

Once the keys had been pressed they were locked down until mechanical contacts in a distributor unit passed over the sector connected to that particular keyboard, when the keyboard was unlocked ready for the next character to be entered, with an audible click ( known as the " cadence signal ") to warn the operator.

He took his last win in the opening race of the 1970 season and was competitive throughout the year, although mechanical failures blunted his challenge.

In earlier times, it was used in reference to mechanical computing machines.

The only mechanical device that existed for numerical computation at the beginning of human history was the abacus, invented in Sumeria circa 2500 BC.