A headframe (also known as a gallows frame, winding tower, hoist frame, pit frame, shafthead frame, headgear, headstock or poppethead) is the structural frame above an underground mine shaft so as to enable the hoisting of machinery, personnel, or materials.
How does a headframe work?
Cables from a mine’s hoist house passed over sheave wheels at the top of the frame, lowering miners to their work, transporting mules, equipment and supplies down the shafts and most importantly, bringing up load after load of ore.
Why do the legs on a head frame?
The left “legs” of the head frame slope towards the hoist. This is due to the tension in the cable pulling the whole frame in that direction. The sloping legs prevent the head frame from toppling or falling over.
What Is a Winding house of a mine?
For those who are not aware: a winding house is where the wind for the mine elevator is located, typically a steel rope operated by a steam engine or later by an electric engine. In this case it is the original steam powered Victorian winding engine of the abandoned Elliot Colliery .
What are the difference between the two mine winches shown here?
So what are the differences between the two? The biggest difference is that a hoist is designed to both lift and lower a load, whereas a winch is designed to pull a load – and depending on design, hold it in place.
What do you call the two parts of lift that goes down a mine?
Answer: The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine.
What are the two parts of lift that go down a mine?
Answer: The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine. The sheave wheel reduces the sliding friction of the mine cable.
What does it mean when a woman sits with her legs open facing you?
Sitting with slightly open legs is a relaxed position, showing the person is comfortable. Sitting allows a wider opening of the legs and can thus be even more of a sexual ‘crotch display’. If the person is a bit worried about this, then their hands may cover the genitals.
Why do guys stand with their legs apart?
When a man uses this legs-apart stance, it often signifies dominance, as it highlights the pelvic area. It allows men to highlight their masculinity and show solidarity as a team by all performing the same actions. So, if you want a confidence boost, or just to appear confident, use this stance.
What is the difference between two mine winches?
What does Colliery mean?
coal mine
: a coal mine and its connected buildings.
What are two parts of lift that go down a mine called?
