1851 Great Exhibition: Official Catalogue: Class VIII.: Frederick Ayckbourne
23. AYCKBOURN, FREDERICK, 129 Strand — Sole Inventor and Manufacturer.
Patent float, or invisible life-preserver, and swimming-belt. This apparatus may be worn without inconvenience, may be instantly rendered available in cases of shipwreck at sea, and may be used as a support in learning to swim. It is portable, easily managed, and will last for years.
Models of life-boats and portable boats, invented by the exhibitor.