Toolrunner
Plastic
- Joined
- Dec 5, 2009
- Location
- Canberra
I am having trouble finding out about the clutching mechanism shown in the photos below. It was part of cargo hoisting machinery popular in the 1910s to 1960s on small Australian coastal trading vessels, and I suppose also their British counterparts.
The first pic below is of a Smart & Brown motor winch circa 1914, driven by a 4 h.p. paraffin motor. It was intended for use on small motor barges and the like. The photo is from the "Marine Oil Engine Handbook", 3rd ed. London: Temple Press, 1914, p.150. (link here) The accompanying text says: "The winch itself is merely a drum driven directly off the engine by a large friction pulley that is entirely controlled by one lever, the latter throwing the friction drum in or out of action as desired. On the rim of the friction drum there are four deep grooves, which interlock with duplicate grooves on the driving pulley."
The second two pics show another winch, with the same sort of clutching mechanism, being used on a WWII Australian Army vessel in Papua New Guinea.
I am hoping to find out exactly how the mechanism worked, as in, if one were to make one today, what components would we make?
Hopefully there is some information in an old textbook I've overlooked.
I have a large pdf library of old engineering books from Internet Archive and normally I am quite able to answer all my own queries from them. But on this occasion I am struggling to come up with anything and would be grateful for input.
Ian Scales
Canberra, Australia
The first pic below is of a Smart & Brown motor winch circa 1914, driven by a 4 h.p. paraffin motor. It was intended for use on small motor barges and the like. The photo is from the "Marine Oil Engine Handbook", 3rd ed. London: Temple Press, 1914, p.150. (link here) The accompanying text says: "The winch itself is merely a drum driven directly off the engine by a large friction pulley that is entirely controlled by one lever, the latter throwing the friction drum in or out of action as desired. On the rim of the friction drum there are four deep grooves, which interlock with duplicate grooves on the driving pulley."
The second two pics show another winch, with the same sort of clutching mechanism, being used on a WWII Australian Army vessel in Papua New Guinea.
I am hoping to find out exactly how the mechanism worked, as in, if one were to make one today, what components would we make?
Hopefully there is some information in an old textbook I've overlooked.
I have a large pdf library of old engineering books from Internet Archive and normally I am quite able to answer all my own queries from them. But on this occasion I am struggling to come up with anything and would be grateful for input.
Ian Scales
Canberra, Australia