| 摘要 |
An elongated web of stamps comprising a plurality of stamps connected together by a backing strip or longitudinally spaced transverse rows of perforations and formed into a roll is used in the dispensing apparatus disclosed. The stamp web is moved from the roll through an opening in the housing the distance required to position the desired number of stamps to be cut from the web each time the apparatus is actuated. To accurately position the web so that the web is cut along a connection between stamps such as a row of perforations, the web travels over a freely rotating indexing wheel having ridges positioned to engage the web at the connection between stamps only. The tension in the web during the dispensing operation and the structural weakness of the connection causes the web to bend at the line of contact with the ridges which insures that the wheel is rotated by the web without slippage and provides a very accurate means of controlling the position of the web when the dispensed stamps are severed from the web. Between dispensing operations, a roller exerts a resilient force on the web between two ridges in which the web is in contact, which holds the wheel and web in a known position for the start of the next vending operation.
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