Title: Theory / Unimportant / Experimental / Machines / Basic and how they work - navy / Screw

Name: A screw
Definition: an inclined plane wrapped around a cylinder
Page: 33 (1)
Chapter: 5

Name: A jack screw
Page: 33 (1)
Chapter: 5

Question: The TMA of a screw is
Answer: \(\frac{2\pi r}{p}\) with \(r\) the length of the handle, \(p\) the distance between corresponding points on successive threads
Page: 33 (1)
Chapter: 5

Name: Micrometer
Page: 34 (2)
Chapter: 5
Intuition: Device used to measure really small sized, up to thousands of inchs
Typ: Screw

Name: Turnbuckle
Page: 35 (3)
Chapter: 5

Name: A rigger's vice
Definition: ￼
Page: 35 (3)
Chapter: 5
Typ: Screw

Name: A friction brake
Definition: ￼
Page: 35 (3)
Chapter: 5
Typ: Screw

Name: Left hand thread
Page: 35 (3)
Chapter: 5

Name: Right hand thread
Page: 35 (3)
Chapter: 5

Question: How to reduce slackness in rope or cable ?
Answer: Use a turnbuckle
Page: 35 (3)
Chapter: 5

Question: Why turnbuckle does not open themselve under the pressure
Answer: They are constructed to have a lof of frictional resistance
Page: 35 (3)
Chapter: 5
Answer2: Some have locknet on each screw to prevent slipping

Name: winch
Definition: A mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the "tension" of a rope or wire rope (also called "cable" or "wire cable").
Page: 35 (3)
Chapter: 5
French: Treuil

Name: Wire rope
Definition: several strands of metal wire twisted into a helix forming a composite "rope", in a pattern known as "laid rope".
Page: 35 (3)
Chapter: 5
French: Câble de traction

Question: How to hold in place wire rope ?
Answer: With a rigger's vice. ￼
Page: 35 (3)
Chapter: 5

Question: How to stop a winch with load suspended in mid air ?
Answer: Use a brake.
Page: 35 (3)
Chapter: 5

Name: Screw gear
Page: 35 (3)
Chapter: 5
Intuition: steering gear used on many small ships and as a spare steering system on some larger ships

Name: Quadrant davit
Page: 36 (4)
Chapter: 5

Name: chapter
Definition: to end, with a loft of english word unknown
Page: 36 (4)
Chapter: 5