assembly 10 is advanced accordingly assembly 20 24 is termed the travelling applicator head and assembly 22 26 the stationary applicator head it will be appreciated that all of the steps as set forth herein will be of a timed or position triggered and therefore sequential form suitable for automated or semi automated operation to this end various optical sensors switches and other mechanical devices may be employed to assist in the accurate sequencing of the operations through a central controller in fig1 the apparatus for applying sealant according to the method of the present invention is illustrated in greater detail the apparatus indicated generally as 100 includes an infeed conveyor 50 and an outfeed conveyor 52 which are preferably belts oriented to transfer the assemblies in a nearly vertical orientation as this is the more stable orientation for glass supports 54 and 56 also nearly vertical include casters or other suitable guides to support the assemblies in addition the conveyors are preferably provided with position sensors 53 seen clearly in fig1 to detect the presence of a glass assembly and place it correctly in the application station indicated generally as 110 advantageously the conveyors may be driven separately or in unison allowing assemblies to be run closer together in the production line the application station 110 includes two applicator heads to apply sealant according to the method of the present invention a travelling applicator head 200 is supported on a traveller 204 movable on a linear preferably nearly vertical path on a track.