1851 Great Exhibition: Official Catalogue: Class X.: J. Sparks and Co
591. SPARKS, J., and Co. 28 Conduit Street, Regent St., and 115 New Bond St. — Manufacturers.
Spinal machine, with elastic spring crutches, for weakness of the spine. Registered.
Dr. Foucart's spinal rectifier, and chest-expander.
Dr. Foucart's improved splints for fracture of tibia and fibula.
Extending knee instrument for contracted knees. Portable spring crutch, for convenience in travelling, &c.
New elastic single and double spring trusses, with vulcanized Indian-rubber pads. Umbilical truss, with air pads. Bathing truss, covered in India rubber.
Elastic spiral silk stockings, ankle socks, and knee caps, for relief and cure of varicose veins, and for giving support after fractures, dislocation, sprains, etc.; elastic silk belt for giving support, etc.
Elastic steel backboard, with vulcanized India-rubber arm straps, for stooping of the shoulders, etc.
Young lady's boot, for weak ankles.
Moulded leather hip knee and ankle splints, for confining the motion of the limb during disease.
Hydrostatic, or water bed, invented by Dr. Arnott. India-rubber water-pillow, for holding hot or cold water. Waterproof silk coat.
Portable cloak boat, for crossing rivers and lakes; can be worn as an ordinary cloak, being waterproof and light, and can be instantly inflated. Hand paddles for cloak boat.