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Browse Prior Art Database

Hot Stamp Unit

IP.com Disclosure Number: IPCOM000079728D
Original Publication Date: 1973-Aug-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Erickson, RA: AUTHOR

Abstract

This unit provides reliable hot-stamping of sequential numbers with improved reliability and accuracy. Due to the changes in temperature in a hot stamp unit, parts tend to expand and contract out of tolerance. By careful design and machining, the fit between each pawl and ratchet provides precise, slip-free location of the ratchet and its associated numbering wheel, even when heated.

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Hot Stamp Unit

This unit provides reliable hot-stamping of sequential numbers with improved reliability and accuracy. Due to the changes in temperature in a hot stamp unit, parts tend to expand and contract out of tolerance. By careful design and machining, the fit between each pawl and ratchet provides precise, slip-free location of the ratchet and its associated numbering wheel, even when heated.

The spring pressure unit includes a pressure transfer arm for the pawl of each numbering wheel in the stamp unit. Each transfer arm has a mechanical leverage advantage of about 2:1. The arms are all supported by a common support body, with each arm having a dual spiral spring arrangement between itself and the transfer block. The pressure on each of the spiral springs is adjustable by a set screw. By utilizing two spiral springs at each arm, the unit remains operational even if one spring is disabled.

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