Here is my collection of vintage funk/soul breakbeats. All loops in wav quality (and not converted from mp3).
Every break manually sliced (rex2), some breaks have 2 or more versions, for example, cd and vinyl. Sources: Doubleclick, Loachm, Uber break packs, some sampled by me.

Click right mouse button and select "save as" for single file download.
For mass download use DownThemAll for Firefox or Download Master for Chrome.

Please be careful! It's not a royalty-free samples!