Victorian Cased Demonstration Gyroscope by Elliott Brothers London

For sale, a large Victorian cased demonstration gyroscope on stand by Elliott Brothers of London.

This solid brass gyroscope is held in a U-shaped frame from which a circular mount is attached. The mount holds the central rotor disc which is attached by a spin axis to the top and bottom and can be spun to high resolution by means of winding a string around the axis which is threaded through a small hole. The U shaped frame has a shaft which sits freely in a solid brass base on which the maker’s name is engraved, “Elliott Brothers, London”.

The gyroscope also has two original weights which may be hung on either side of the circular mount and an original wooden bobbin and string which is employed in applying power to the gyroscope. The set is complete in its original fitted mahogany case with a working lock and key.

The name gyroscope was coined by the French scientist, Leon Foucalt in 1852 as a result of his investigations into the rotation of the earth and the development of the ideas of the German scientist Johann Gottlieb Bohnenberger from 1817. The experiment was commonly used thereafter to show how a spinning rotor resists changes to its orientation due to the angular momentum of the wheel. A phenomenon also known as gyroscopic inertia or rigidity in space, gyroscopes have been central to development of navigational instruments.

The makers. Elliott Brothers, was formed in 1804 by William Elliott. Following the completion of his apprenticeship to instrument maker, William Blackwell, he began trading under his own name, W. Elliott and plied a successful trade in London. Elliott is considered to have been married three times during his life and early records suggest a number of makers with the same surname working in London. Evidence is not yet complete to confirm just how many of them were related, but William’s son Charles Alfred from his third marriage was apprenticed to him by 1837 after which he also spent time with the talented instrument maker, JF Newman of Regent Street. William must have been a man of means by this point as his elder son, Frederick Henry had also graduated from Christ’s College in Cambridge by 1845.

Four years later in 1849, William took both of his sons into business changing the name to William Elliott & Sons and in the following year exhibited at The Great Exhibition where they were a recipient of a bronze medal for their work. By this time, the company had moved from their original base in High Holborn to a new address at 56 The Strand.

William died in 1853 leaving the business to his sons and by 1854, the pair had changed the name to Elliott Brothers. In 1857 the company subsumed the highly renowned instrument making company, Watkins & Hill after the deaths of the partners. The Watkins & Hill Charing Cross premises were then leased and Elliott Brothers moved to larger premises at 449 Strand. Under the astute business leadership of Frederick, Elliott Brothers went on to work with a number of leading scientists of the period involved themselves in the production of early electrical instruments, telegraphic equipment and the new aneroid barometer as well as their standard stock. During this time, numerous patents are registered for barometers, telescopes and drawing boards amongst others.

In 1867 the company exhibited at The Paris Exhibition and three years later in 1870, records show that the partnership was dissolved upon Charles’s retirement. Frederick continued to direct the business until his death in 1877, however, it continued as Elliott Brothers under the guidance of William’s wife Susan who took leading telegraph engineer, Willoughby Smith into partnership.

Upon Susan’s death in 1880, the firm finally fell away from family ownership although the Smith family continued to run Elliott’s with Willoughby’s sons, William Oliver and Willoughby Statham taking roles as manage