I had find many products about FR PTFE Soft Strips. FR PTFE Soft Strips FR soft strip material is a composite material with bronze wire mesh as frame and calendered with a film of PTFE, MOS2, and Graphite, sintered and rolled to a specific thickness. It has low friction and low wear. Owing to its softness, it can be easily wrapped into small diameter flanged bushes with thin wall thickness. It is widely used in textile machines, spherical bearings, automobile door hinges, and the operating rods for cars et
And you can see more from king flat sheets welding carbon steel folding chair metal shank steel extrusion tube designer bed sheets stainless steel tape stainless steel strip drilling metal
A leather cannon was an experimental Swedish attempt of constructing a lighter weapon that would bridge the gap between muskets and heavy stationary cannons. Ordered by Gustavus Adolphus of Sweden, it was unsuccessfully fielded in the third Polish-Swedish war.
Contents
1 Background
2 Leather cannon
3 See also
4 References
//
Background
Cannons in the early 17th century were of a plethora of calibers and all were too heavy to be moved during battle, as they had been developed as siege weapons. Gustavus Adolphus reduced the number of calibers of guns fielded to guns firing 24-, 12- and 6-pound cannonballs (roughly 10, 5 & 2.5 kg) in order to simplify logistics. Guns used in the field were limited to bronze cannons; others, such as guns made of cast iron were placed in castles and fortresses.
Gustavus Adolphus’ tactics were based on use of effective firepower. While heavy cannons were effective at the start of the battle, they could not be moved from the hill that they usually were deployed on (the guns themselves weighed from roughly 300 kilograms to 3 tons). As such, the artillery could not respond effectively to developments in battle.
Leather cannon
In order to fill the gap, the so-called leather cannon was developed. A relatively thin copper tube was reinforced by heavy ropes and finally clad in leather (alternatively clad in leather straps first and then rope). While the weapon was light enough to be mobile, and at the same time was cheaper in construction, it turned out to be flawed.
The reinforcing material acted as an insulator, and did not let heat dissipate fast enough. Thus, after only a few shots the gun became red-hot. The heat would either deform the tube and drastically decrease accuracy or at the very least prematurely ignite the gunpowder, severely injuring the loader. As a weapon, it turned out to be a fiasco.
The weapon had still shown its usefulness by giving mobile fire support. Before Sweden’s entry in the Thirty Years’ War, a new weapon had been developed, the bronze 3-pound regimental cannon. It could be towed by one horse or three men and had a range and rate of fire three times greater than the muskets of the period.
See also
Grasshopper cannon
References
Sadan vuoden sotatie, Suomen sotilaat 1617-1721, Jussi T. Lappalainen, Gummerus, Jyv?skyl? 2001 ISBN 951-746-286-7
Categories: Infantry guns | Military equipment of Sweden(and so on)
You can also see some feature products :
corrugated metal sheets solenoid valve coil washers steel burner cast iron stainless steel strips chrome steel balls aluminum scrap metal mazda ignition coil heli coil pipeline steel cut wire shot sconce metal chilled water coils king bed sheets paper party plates grinder metal rollers steel nickel bars chi ceramic hair iron vinyl wire square paper plates
