riddle 17...solved by My68Charger...riddle 18 and 19...solved by bsimms89...

[captnsim]

I have four wings, but can not fly,
I never laugh and never cry;
On the same spot I'm always found,
Toiling away with little sound.

What am I?

[My68Charger]

Your a windmill 

[captnsim]

 ...good job My68Charger... riddle 18

Fisherman love me
Doctors hate me
Children want to eat me
I am a 13 letter word
What am I

[bsimms89]

Chathuringmes

Answer this: Why is a raven like a writing desk?

[captnsim]

Because Poe wrote on both.
Actually this is a fake riddle by Lewis Carrol, from Alice in wonder land...

[captnsim]

Letter after f plus half of 8 plus shadow of q
plus oppisite of d plus the letter before m
plus the middle of sea plus 2 into the 19th letter
plus the end of you

[bsimms89]

god bless u

[captnsim]

  correct again