BULLETIN OF THE 
U.S. BUREAU OF LABOR STATISTICS 
NO. 447 
WASHINGTON 
JUNE. 1927 
SAFETY CODE FOR RUBBER MILLS AND CALENDERS 
INTRODUCTION 
The mechanical hazards involved in the rubber industry are of 
such a character that the American Engineering Standards Com- 
mittee has recognized the necessity of standardized practice in the 
safeguarding and the quick stopping of all machines used in breaking 
down, washing, milling, cutting, molding, and vulcanizing of rubber, 
together with calenders, spreaders, coaters, and dryers, and similar 
machinery used in the manufacture of rubber goods. 
One purpose of this code is to serve as a guide to State or other 
supervising authorities. It is also intended for use directly by the 
concerns operating machines of this or a similar character and may 
be adopted by any manufacturing concern as a standard to be fol- 
lowed by its superintendents, foremen, designers, mechanics, and 
operators. It is also intended for use by machinery concerns manu- 
facturing rubber-working machinery. 
SCOPE 
The entire code shall cover the mechanical hazards encountered in 
‘he manufacture of rubberized fabrics, rubber tires, fire and garden 
nose, footwear, molded rubber goods, rubber belting, reclaimed 
rubber, rubber solution and products made therefrom, and miscel- 
laneous rubber materials; shall cover the machines used in breaking 
down, washing, milling, cutting, molding, and vulcanizing of rub- 
ber, together with calenders, spreaders, coaters, and dryers, and 
other machinery used in the manufacture of rubber sheeting ; special 
machines used in the manufacture of rubber tires included. but 
spinning and weaving fabrics excluded. 
On account of the broad field to be covered, it was decided by the 
sectional committee to consider in this preliminary issue the safe- 
cuarding of mills and calenders at the point of operation, and this 
is the limited work that is dealt with in the following rules. 
INTERPRETATIONS AND EXCEPTIONS 
The purpose of this code is to provide reasonable safety for life, 
limb, and health. In cases of practical difficulty or unnecessary hard- 
ship, the enforcing officers or body may grant exceptions from the 
literal requirements of this code, or permit the use of other devices 
or methods, but only when it is clearly evident the equivalent pro- 
tection is therebv secured.