very early forms were long tubes with interchangerble lengths added to the mouth piece
Pocket trumpets, like normal trumpets, are most often keyed in Bb, but this doesn't mean that all pocket trumpets are in Bb.
I believe that F trumpets were used most widely in the late Classical/early Romantic periods (1800~1900).
trumpets were used in religious services as early as c. 2000 B.C.E. It is also know that two early trumpets were found in King Tutankhamen's tomb in Egypt (c. 1339 B.C.E.).
The crude construction of early trumpets didn't allow for the precise control of pitch required for producing music. The natural trumpets of the Medieval period were the first trumpets known to really be considered "musical" instruments.
They're like trumpets without valves.
the elephant
There does not seem to be a brand of trumpets called Cortley. There is a famous trumpet player with the last name of Courtley, but he does not make trumpets at this time (2014).
Perhaps - symphony, orchestra, band, quartet or trumpets etc.
Trumpets have been used for thousands of years, although they haven't always looked like the ones played today. For example, archeologists in South America recently discovered a trumpet fashioned from a sea shell thought to be at least 3,000 years old. Early trumpets were also made from hollow tree branches and the horns of cows and sheep. Eventually, craftsmen started making trumpets from metal, although the valve trumpet wasn't invented until the 19th century. Early trumpets were used mainly for signaling and for religious ceremonies. Trumpets weren't widely used to play music until the Middle Ages.
If you mean "reeds" no, trumpets do no use reeds. Some woodwind instruments use reeds, like the saxophone, clarinet, and oboe.
It sounds like trumpets horns and recorders
well, it is hard to say, as they sort of 'evolved.' Numerous early cultures, such as those in Africa and Australia, developed hollow, straight tubes for use as megaphones in religious rites. These early "trumpets" were made from the horns or tusks of animals, or cane. but they changed slowly over the years as people discovered what they could do with them. Trumpets are among the oldest musical instruments dating back to at least 1500 BC. Older trumpets did not have valves; however, modern trumpets have either three piston valves or three rotary valves, each of which increases the length of tubing when engaged, thereby lowering the pitch. if you need anymore info on trumpets, just message me.