1862 London Exhibition: Catalogue: Class VIII.: Patent Frictional Gearing Co
1953. The PATENT FRICTIONAL GEARING COMPANY, Glasgow.
Specimens and examples of the application of Robertson's patent frictional gearing.
MACHINERY IN MOTION.
DOUBLE-CYLINDER STEAM WINCH, geared with wedge and grooved frictional wheels, with patent break movement, the steam cylinders 6 in. diameter, stroke 10 in. capable of lifting 2 tons.
STEAM ENGINE WITH CIRCULAR SAW for cutting hot iron, driven by wedge and grooved frictional wheels, steam cylinder, 7 in. diameter, stroke 10 in.; circular saw 3 ft. 6 in. diameter.
HOISTING AND TRAVERSING STEAM ENGINE for travelling cranes geared with frictional wedge and grooved bevel wheels, cylinder 5 in. diameter, stroke 10 inches.
SMALL STEAM ENGINE and MODEL of DAVISON'S PATENT HOT AIR, geared with wedge and grooved frictional wheels.
SPECIMENS OF PATENT WEDGE AND GROOVED FRICTIONAL GEARING AND FASTENINGS.
Pair of spur wheels.
Pair of bevel wheels.
Pair of mitre wheels.
Pair of wedge and groove adjustable tyred plate wheels.
Wedge and grooved disc coupelings and keys.
Frictional screw motion.
Two models of hoists.
Rolled iron wedge and groove fastenings for iron structures; girders, roofs, plate work, etc.
Seven sectional drawings of patent wedge and grooved wheel surfaces.
Steam engine and main factory gearing, for increasing speed.
Incline hauling engine, with frictional gearing and patent break movement.
Steam engine and rolling mill geared with frictional wheels.
Steam engine with circular saw for cutting wood, geared with frictional wheels.
Single cylinder hoisting engine, geared with frictional wheels with patent break movement.
Steam engine and fan, driven by frictional wheels.
Frictional screwing rolls for straightening round bars and tubes.
Two drawings of warehouse hoists.
A drawing of shafts with wedge and grooved couplings.
Drawings illustrative of the action and application of frictional screws.