Today in 1906, US Patent 831635 A was issued, an invention of Joseph Strunce, for his “Beer Pipe Cleaner.” There’s no Abstract, although in the description it includes these claims:

This invention relates to certain new and useful improvements in an apparatus to be used for cleaning pipes, and while it is more especially intended to be employed for cleaning beer-pipes, such as are used for drawing beer from kegs, casks, or vessels, yet it is applicable for cleaning pipes used for other purposes; and it consists in certain peculiarities of the construction, novel arrangements, and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.