Hides. Distinguished from skins, in the trade. Hides refer to skins of animals which are over twenty-five pounds in weight. Skins refer to smaller animals; as skins of goats, calves, sheep.
Inlay. A trimming of the upper by an insertion of the same or different kind of material than that of the body in which it is inlaid. It is used for decorative purpose on a shoe.
Inseaming. Sewing sole on turn shoe. Welting and inseaming are practically the same operation.
Inseam Trimming. Cutting off the surplus leather; term is also applied to pulling sole tacks.
Insole. The first sole laid on the last, and is the foundation of all shoes with insoles. It is an important though invisible portion of a shoe. This inner sole is the part to which the upper and outsole are sewed or nailed in the McKay and welt shoes.
Inspecting. The examination of shoes to see that the work is perfect; it is sometimes called crowning.
Inspecting Insole. The operation of looking inside of the shoe for tacks.
Instep. The top of the arch of the foot.
Iron. A term indicating the thickness of sole leather; each unit is approximately one thirty-second of an inch in thickness.