Each push button has {HEAD ~ its own coiled return spring}, received and detained in a semicylindrical nest, offset laterally on the carriage and overlapping the valve member and {TAIL ~ the contactor}, thus affording a highly compact construction 
overlapping
Each push button has { HEAD ~ its own coiled return spring } , received and detained in a semicylindrical nest , offset laterally on the carriage and overlapping the valve member and { TAIL ~ the contactor } , thus affording a highly compact construction
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH