Abstract: A mixhead for a reaction injection molding machine utilizing at least two liquid components supplied under pressure from a delivery system including a recirculation line. The mixhead comprises a housing having a longitudinal channel through the housing and a ram fit with a close slide fit in the channel. The ram is reciprocable from a first upstream position to a second downstream position. A first inlet port extends through the housing into the channel. A first exit port extends from the channel through the housing upstream from the inlet port and on the opposite side of the channel. At least one other similar inlet and outlet port is provided, each spaced peripherally around the channel from the first inlet and outlet ports. Spaced apart recirculation passages extend through the ram to connect the respective inlet and outlet ports when the ram is in its second downstream position.

Abstract: This disclosure is concerned with enabling the use of multiple liquid adhesive nozzles principally to provide continuous uniform adhesive layers, particularly in relatively small items such as cigarette filter tips or the like, wherein a critically oriented adhesive shear surface adjacent the nozzles causes the plurality of adhesive beads simultaneously deposited by the nozzles to merge into a full, continuous, uniform coating, and with additional control features provided to control the degree of merger from separate adjacent beads to uniform merged coating.

Abstract: This disclosure is concerned with enabling the use of multiple liquid adhesive nozzles principally to provide continuous uniform adhesive layers, particularly in relatively small items such as cigarette filter tips or the like, wherein a critically oriented adhesive shear surface adjacent the nozzles causes the plurality of adhesive beads simultaneously deposited by the nozzles to merge into a full, continuous, uniform coating, and with additional control features provided to control the degree of merger from separate adjacent beads to uniform merged coating.

Abstract: This disclosure involves periodically bumping webs such as a cigarette filter paper or the like against a shear surface disposed beyond a multi-nozzle adhesive extruder to provide longitudinally intermittent bands of adhesive coatings for the filters or the like, with optional provision for continuous marginal lines of adhesive along and between the bands for adhesion on the head and tail ends of such filters or other articles as well.

Abstract: This disclosure involves periodically bumping webs such as a cigarette filter paper or the like against a shear surface disposed beyond a multi-nozzle adhesive extruder to provide longitudinally intermittent bands of adhesive coatings for the filters or the like, with optional provision for continuous marginal lines of adhesive along and between the bands for adhesion on the head and tail ends of such filters or other articles as well.

Abstract: An automatic precipitation sampler contains a precipitation detector which signals a control system to remove a cover above the collector surface at initiation of precipitation. Water flows from the inert collector surface, through a sample distributor having an inert surface, to a storage means. The cover is replaced over the collector at the termination of the precipitation event and the storage means is automatically sealed to prevent contamination and evaporation. The time of initiation of sampling and duration of sample collection are measured with a digital clock and stored in memory for later retrieval. Multiple storage means attached to a sequencing sample distributor permit collection of samples from a number of separate events or multiple samples from the same event. Power to operate the system is obtained from a battery and compressed gas making possible operation in remote locations for long intervals.

Abstract: This disclosure is concerned with wrapping sheet material about cylindrical inserts, such as wrapping cigarette paper about filter inserts, with controlled application of spaced adhesive dots or dashes for securing the material to sections of the insert and synchronously controlled cutting of the same to minimize adhesive collection upon the cutter.

Abstract: The present disclosure relates to novel fluid application processes and apparatus wherein fluid extruded through a nozzle is wiped off the nozzle at varopis angles of attack by forcing a moving sheet, web, or other article against the nozzle in a controlled manner as the same moves past the nozzle, thus to produce predetermined in-line coatings upon the sheet, web, or other article, ranging from an array of dots and lines to an array of bands or elongated continuous bands of coating fluid.

Abstract: Novel fluid application processes and apparatus wherein fluid extruded through a nozzle is wiped off the nozzle at various angles of attack by periodically forcing a moving sheet, web, or other article against the nozzle in a controlled manner as the same moves past the nozzle, thus to produce predetermined coatings upon the sheet, web, or other article, ranging from an array of dots and lines to an array of bands or elongated continuous bands of coating fluid.