Abstract: The device includes two elongate, identical members hinged together at one end, and having locking tabs projecting from their opposite ends for securing to two members in a closed position in which confronting operating surfaces there are secured over diametrally opposite sides of a garden hose at two axially spaced sections therealong. The confronting operating surfaces of said members have therein a first pair of semicircular, complimentary recesses surrounding a cylindrical coupling on one end of the hose, and having in the bottoms thereof coaxial, arcuate grooves in which diametrally opposite sides of the coupling are seated to prevent removal from the closed members. Another pair of confronting recesses in said operating surfaces frictionally engage diametrally opposite sides of the hose adjacent its opposite end to lock that end of the hose.

Abstract: Each of the two, pivotal, roll supporting arms of a thread rolling attachment has therethrough adjacent the end thereof remote from its pivotal axis a bore in which one end of a cylindrical pattern roll supporting shaft is adjustably secured. The axis of the bore, and hence the axis of the shaft and the pattern roll mounted thereon, are inclined slightly to the pivotal axis of the roll supporting arm, so that the axis or rotation of the pattern roll will be inclined slightly to the axis of rotation of the stock which is to be engaged by the roll. The pattern roll is releasably attached to one end of the support shaft, and is drivingly connected to one end of an internal pin, which is mounted intermediate its ends for rotation in an axial bore which is formed through the support shaft. At its opposite end the pin is releasably connected to a roll gear to which rotation is imparted by the pin upon rotation of the pattern roll.

Abstract: An annular threading roll is releasably secured to one end of a support shaft by a ball detent which in its locking position seats at one side in a semi-spherically shaped recess that is formed in the inner peripheral surface of the roll, and which is engaged at its opposite side by an enlarged-diameter head formed on one end of an operating member that is mounted for limited axial movement in an axial bore in the shaft. The operating member is spring-loaded into a position in which its head engages the detent to keep the latter in its roll locking position, but the member can be pushed axially to a second position to remove its head from behind the detent which can then shift radially inwardly of the shaft to release the roll for axial movement off of the shaft.

Abstract: The wedge-shaped operating member of a thread rolling attachment is reciprocated by a piston rod which extends into one end of a fluid pressure cylinder. A rotatable valve stem is mounted intermediate its ends in the opposite end of the cylinder for limited axial movement, and has thereon a valve seat normally closing a port which leads to a reversible valve that directs fluid under pressure selectively to opposite ends of the cylinder to shift the piston rod between retracted and advanced positions. The inner end of the stem is slidably connected to the piston rod so that when the latter reaches its advanced position it momentarily unseats the valve seat from the port to effect reversal of the valve and consequent return of the piston rod. The valve stem is rotatable to adjust the length of the stroke of the piston rod.

Abstract: An outboard thread rolling attachment for an automatic screw machine for rolling a pattern on a workpiece comprising:a roll arm yoke; a pair of roll arms supported by the yoke end diametrically opposed to each other relative to the axis of rotation of a workpiece placed therebetween; each roll arm having a rotatable shaft with a thread roll positioned at the lower end of each shaft; fluid pressure means including a first cylinder element, a first piston element and a wedge element connected to the roll arm yoke and in contact with and operable on and between the inner end of the roll arm.The first piston element comprises a second movable cylinder element and a second piston element having adjustment means for adjusting the travel of the wedge element.