are fitted overhead in the various departments. The number and size of the sprinkler tanks vary according to the requirements of each mill, hut 011 an average each tank is from 30 feet to 60 feet either way, and carries permanently about 6 feet of water. The water is mostly a clean supply derived from the municipal mains, though an emergency connection with the millpond by means of a pump is al...

Variable fill fluid couplings are used in the speed control units. Also, variation in coupling oil volume is used in adapting one size of coupling to a wider range of power transmission applications. Available model for the partially filled fluid couplings, has a good performance for couplings with fixed amount of oil but their performance will be degraded if they are used for the variable fill...