Claims
- 1. An improved label carrier strip transport for a heat transfer labelling machine of the type in which the label carrier strip is fed at a basic speed to a first shuttle roll which is mounted on one end of a shuttle slide, past a labelling site, to a second shuttle roll at the other end of the shuttle slide, and thence to a takeup point, and in which the basic speed of the label carrier strip is modified at the labelling site by reciprocating the shuttle slide using a periodically rotating cam which is mechanically coupled to the shuttle slide, wherein the improvement comprises the use of a conjugate cam for said periodically rotating cam, said conjugate cam acting to increase the basic speed of the label carrier strip during the greater part of the cam rotation period, and to decrease the basic speed of the label carrier strip during the balance of the cam rotation period.
- 2. The label carrier strip transport of claim 1 wherein said conjugate cam acts to increase the basic speed of the label carrier strip during from 0.65 to 0.85 of the cam rotation speed.
Parent Case Info
This is a division of Ser. No. 915,025, filed June 12, 1978, U.S. Pat. No. 4,253,904.
US Referenced Citations (5)
Divisions (1)
|
Number |
Date |
Country |
Parent |
915025 |
Jun 1978 |
|