Mercantile privileges were granted to the shoemakers in Oxford thus: "Know ye that I have granted and confirmed to the corvesars of Oxford all the liberties and customs which they had in the time of King Henry my grandfather, and that they have their guild, so that none carry on their trade in the town of Oxford, except he be of that guild. I grant also that the cordwainers who afterwards may come into the town of Oxford shall be of the same guild and shall have the same liberties and customs which the corvesars have and ought to have. For this grant and confirmation, however, the corvesars and cordwainers ought to pay me every year an ounce of gold." A guild merchant for wool dominated and regulated the wool trade in many boroughs. In Leicester, only guildsmen were permitted to buy and sell wool wholesale to whom they pleased or to wash their fells in borough waters. Certain properties, such as those near running water, essential to the manufacture of wool were maintained for the use of guild members. The waterwheel was a technological advance replacing human labor whereby the cloth was fulled. The waterwheel turned a shaft which lifted hammers to pound the wet cloth in a trough. Wool packers and washers could work only for guild members. The guild fixed wages, for instance to wool wrappers and flock pullers. Strangers who brought wool to the town for sale could sell only to guild members. A guildsman could not sell wool retail to strangers nor go into partnership with a man outside the guild. Each guild member had to swear the guildsman's oath, pay an entrance fee, and subject himself to the judgment of the guild in the guild court, which could fine or suspend a man from practicing his trade for a year. The advantages of guild membership extended beyond profit in the wool trade. Members were free from the tolls that strangers paid. They alone were free to sell certain goods retail. They had the right to share in any bargain made in the presence of a guildsman, whether the transaction took place in Leicester or in a distant market. In the general interest, the guild forbade the use of false weights and measures and the production of shoddy goods. It maintained a wool beam for weighing wool. It also forbade middlemen from profiting at the expense of the public. For instance, butchers' wives were forbidden from buying meat to sell again in the same market unless they cooked it. The moneys due to the king from the guilds of a town were collected by the town reeve.