Patent · US Expired

Safety device for counter rollers in a printing machine

US4454812A · kind A · utility

15Cited by

9References

4Claims

0Family size

Assignee

VEB Kombinat Polygraph Werner Lamberz Leipzig · DE

Inventors

Hans Johne · Radebeul, DE
Lothar Schmidt · Bochum, DE
Arndt Jentzsch · Coswig, DE

Key dates

Filing date	Sep 27, 1982
Grant date	Jun 19, 1984
Priority date	—
Expiry date	Sep 27, 2002

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41F33/0018
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A printing press is provided with a safety device mounted in the vicinity of a gap formed between two counter printing rollers for preventing the gap from intrusion by foreign elements, such as a mop or the hand of an operator. The device includes a four-link transmission unit operatively interconnected between pivotable guard plates and a cam switch adapted to actuate an end switch of the printing press to shut the latter off. The guard plates are swung away from the rollers so that the gap is enlarged.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.