Affixing Machine

An Affixing Machine is a machine that affixes postage stamps to an envelope, postcard or wrapper. The first affixing machines appeared in the 1850s but were not widely used until the early 20th century. There were also much larger floor models produced for this purpose. Stamp affixer machines were brought about by the need to mechanically affix stamps for bulk processing of mail. A secondary reason for the machines was to make the theft of stamps more difficult for employees with access to large inventory of coils.

see also:
postage meter
bibliography:
George P. Howard - The Stamp Machines and Coiled Stamps
Martin A. Armstrong - United States Coil Issues 1906-38
online source:
Private Perforations on U.S. Vending and Affixing Machine Coil Stamps
Early Office Museum