A system of synchronizing the drive of a plurality of machines comprising means for sensing when the machines are running out of synchronism and valve means operative in response thereto for controlling the flow of hydraulic medium to which the drive of at least one of the machines responds to restore synchronism, more particularly applied to the flow treatment of articles, such as containers, through successive machines. One machine, however driven may be treated as the master machine and the o...

Carriers are mounted on vertical rails having a wear plate on the bottom which rests upon wear plates on a continuous chain which drives the carriers from one machine station to another where one or a group of carriers may be retained stationary as the chain continues to advance. A reciprocal control mechanism engages the wear plate of a carrier and advances it to a station where the pallet carried thereby is accurately oriented and clamped during a machining operation. The clamped pallet preven...

A silicon-germanium hetero bipolar transistor comprising a silicon collector layer, a boron-doped silicon-germanium base layer, a silicon emitter layer and an emitter contact area. The transistor is fabricated using an epitaxy process on a surface of pure silicon. An electrically inert material is incorporated into the epitaxial layers in order to link the defects in the semiconductor structure and to reduce the outdiffusion of the dopant. Thus, a transistor for high-frequency applications can b...

In the case of a plant for transporting textile fabrics (1), with at least one permeable and suctioned conveyor belt (4) for the transport of a textile fabric (1) delivered by a textile machine onto the conveyor belt (4) at a delivery point (5), it is provided that on the side of the conveyor belt (4) facing away from the textile fabric (1), several air guiding means (6) extending transversely to the conveyor belt (4) are arranged, said air guiding means deflecting the air entrained by the conve...

A conveyor for transferring articles from station to station in an operation which includes lifting the article, transporting it to the new station, and lowering the article into position. Means are provided to sense the presence or absence of an article at every station and to provide for advance of articles from every station in rear of the most advanced empty station.

A transfer feed in which the work gripping fingers are connected to a pair of feed bars. The bars are supported intermediate their ends and at their ends for sliding lateral and longitudinal movement. Cam units are connected to the bars at either end to effect the lateral movement and a third cam unit connected to one end of the bars effects longitudinal movement. No torsional forces are imposed on the bars thus permitting the feeding of heavier parts than has been possible with other types of f...

An accumulating transfer machine provides means for automatically advancing all workpieces located rearwardly of an empty work station on a single-stroke cycle of the transfer bars. This is accomplished by a detector bar which senses the absence of a workpiece and sets up the next rearward dog, which in turn is interconnected to all of the remaining rearward dogs to similarly set them up into workpiece-engaging position.

In work transfer machinery, particularly for machine tool application, which includes a work station and a pallet movable into and out of the station, apparatus for automatically locating the pallet in a predetermined position, and thereafter releasably clamping the pallet in this position. An actuator shaft operates to first move the pallet locators into the pallet and to subsequently provide for spring pressure activated movement of clamping arms into clamping engagement with the pallet.

A conveyor or rotary index drum transport system for brush blanks. The system utilizes a series of lightweight blank receiving work holders sequentially indexed through a series of stations with selected stations incorporating means for shifting the work holder to an operative position outward of the indexing or transporting means. The transport conveyor or drum also travels through stationary loading and unloading stations.

A novel gene isolated from Deschampsia antarctica coding for a lipase like protein is disclosed. A system for production of recombinant enzyme is also disclosed as well as uses for the enzyme.