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Updated: May 23, 2025
The Service balloon principally used was made of goldbeaters' skin, containing about 10,000 cubic feet of hydrogen, which had been produced by the action of sulphuric acid on zinc, and compressed in steel cylinders. A special gas factory was, for the purpose of the campaign, established at Cape Town. It is here that reference must be made to some of the special work undertaken by Mr.
In these latter the gas escaped, and Cavallo was about to try goldbeaters' skin at the time that the Montgolfiers came into the field with their hot air balloon.
This system requires but a very small balloon, made of three or four thicknesses of goldbeaters' skin, measuring from 7 to 10 feet in diameter, and needing only two or three gas cylinders for inflation. Within the balloon, which is sufficiently translucent, are placed several incandescent lamps in metallic circuit, with a source of electricity on the ground.
Fifteen thicknesses of goldbeaters' skin about the most expensive covering obtainable were used for the envelope, which was 25 feet in diameter. A slight shower of rain in which the airship was caught led to its wreckage, owing to the absorbent quality of the goldbeaters' skin, whereupon Capper and Cody set to work to reproduce the airship and its defects on a larger scale.
While he tried to follow his son's train of thought, he went through the list of odds and ends of plant needed by a country business, drawing David now to a hot-press, now to a cutting-press, bragging of its usefulness and sound condition. "Old tools are always the best tools," said he. "In our line of business they ought to fetch more than the new, like goldbeaters' tools."
While he tried to follow his son's train of thought, he went through the list of odds and ends of plant needed by a country business, drawing David now to a hot-press, now to a cutting-press, bragging of its usefulness and sound condition. "Old tools are always the best tools," said he. "In our line of business they ought to fetch more than the new, like goldbeaters' tools."
It happened that close to the Calton Hill, in the valley at its northern side, there were many workshops where interesting trades were carried on; there were coppersmiths, tinsmiths, brass-founders, goldbeaters, and blacksmiths. Their shops were all arranged in a busy group at the foot of the hill, in a place called Greenside. The workshops were open to the inspection of passers-by.
Larger paper balloons were now constructed, capable of carrying simple self-recording instruments, also postcards, which became detached at regular intervals by the burning away of slow match, and thus indicated the path of the balloon. The next attempt was more ambitious, made with a goldbeaters' skin balloon containing 4,000 cubic feet of gas, and carrying automatic instruments of precision.
The first had been named 'Nulli Secundus' and the second was named 'Nulli Secundus II. Punch very appropriately suggested that the first vessel ought to have been named 'Nulli Primus, while a possible third should be christened 'Nulli Tertius. 'Nulli Secundus II. was fitted with a 100 horse-power engine and had an envelope of 42 feet in diameter, the goldbeaters' skin being covered in fabric and the car being suspended by four bands which encircled the balloon envelope.
Once aerostation had been proved possible, many people began the construction of small balloons the wholehole thing was regarded as a matter of spectacles and a form of amusement by the great majority. A certain Baron de Beaumanoir made the first balloon of goldbeaters' skin, this being eighteen inches in diameter, and using hydrogen as a lifting factor.
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