It is surprising how quickly and easily the work is done on the
Goodyear Welt Sewing Machine. This famous machine has been the
leading factor in the great revolution that has taken place in shoe
manufacturing. Its work should be carefully noted--all stitches of
equal length and measured automatically, the strong linen thread
thoroughly waxed and drawn evenly and tightly; for the machine never
tires, and it draws the thread as strongly in the evening as in the
morning. Every completed movement of the needle forms a stitch of great
strength, which holds the welt, upper and insole securely together.
As the lasting tacks as well as the tacks which hold the insole in
place on the last were withdrawn just prior to this operation, it will
be seen that the inside of the shoe is left perfectly smooth. After
this process the surplus portions of the lip, upper and welt which
protrude beyond the stitches made by the Goodyear Welt Machine are
trimmed off by the Goodyear Inseam Trimming Machine--a most efficient
machine, in which a revolving cup-shaped knife comes in contact with
the surplus portions of the leather and trims them off very smoothly
down to the stitches.
[Illustration: PUTTING THE GROUND CORK AND RUBBER CEMENT IN SHOES