1&8 LABELING CANS 
chines are adjustable to various sizes of cans and can be oper- 
ated by hand, motor, or belt power 
Principle of Labeling Machines.—The cans are placed into 
a chute from which they roll into the machine by gravity. They 
are caught by two endless belts which draw them through the 
machine. They first pass over revolving metal dises that touch 
each can with a trace of “pick-up” cement: From here the can 
rolls over the label table which is loaded with a stack of labels, 
face-down. The touch of “pick-up” cement on the cans causes 
each can to pick up one label, which is automatically wrapped 
Fig. 79. Burt labeling machine 
Courtesy of Burt Machine Co. 
around the can as it rolls on. An endless belt passing through 
a paste box apples a small strip of paste to the lap of the label 
and a curling rod stretches the label taut and Gives its lap an 
inward curl, making it to conform to the shape of the can and 
ensuring a perfect seal. 
‘The label table is equipped with an automatic feeding ar- 
rangement which pushes the stack of labels up as fast as the 
labels are being used. 
Wrinkles and Rust Spots on Labels.—-In the latest models 
of labeling machines no paste touches the cans proper. The 
pick-up" cement used on the cans, is moisture-proof and is 
applied hot. ‘This is a great advantage from the standpoint of 
ensuring freedom from rust spots on labels. The cement, being 
applied hot, dries instantly and having no corrosive action on the 
