Abstract: Disclosed are a method and apparatus for coating the interior surface of a cylinder wherein separate consumable electrodes are fed to an arc formed between a rotating non-consumable electrode and directing an atomizing gas through the arc formed to carry the molten metal of the consumable electrode to the cylinder wall to coat the wall and wherein a first consumable electrode in introduced in the cylinder bore with a rotating thermal spray head and a second consumable electrode is introduced into the cylinder from an end opposite the rotating non-consumable electrode and wherein either or both consumable electrodes may be utilized to form deposits on the cylinder of mixed or alternative composition.

Abstract: Disclosed are a method and apparatus for coating the interior surface of a cylinder wherein a consumable electrode is fed to an arc formed between a rotating non-consumable electrode and directing an atomizing gas through the arc formed to carry the molten metal of the consumable electrode to the cylinder wall to coat the wall and wherein the consumable electrode is introduced into the cylinder from an end opposite the rotating non-consumable electrode.

Abstract: Disclosed is a new carriage feed system which utilizes in the preferred embodiment a single double rod feed cylinder having its rod ends mounted to the top bridge and base of the tower respectively.The cylinder is hydraulically fed at the ends of the rod. A sheave carrier is mounted at each end of the barrel of the cylinder. The cylinder barrel forming the structure for support of the carriers which are also guided in the tower structure for linear movement along the tower. The cable reeving for the system is disposed about sheaves on the carrier and anchored at the tower midpoint. Suspended from the cable and guided on the tower is a drill head which performs the usual drilling functions. The system is fully balanced with regard to loads in the cables and about the cylinder to minimize offset stress. In addition, all draw down forces are taken in tension in the cylinder rods.

Abstract: An improved push button socket release mechanism which utilizes a locking ramp form which provides for a wide range of socket retention fit, and improves both the self-locking and anti-rattle capability of the socket retention mechanism.

Abstract: A wrenching apparatus for torquing a fastener to its yield point and automatically shutting off once the yield point is reached. The yield point is sensed by having the wrenching apparatus resiliently restrained and creating a pulse signal in response to an increment of restraint. Rotational output of the wrenching apparatus also creates a pulse for each increment of rotation chosen. The rotational pulses are counted and the restraint pulses are utilized to cancel the sum of the rotational pulses. The yield point is detected when the sum of the rotational pulses exceeds a predetermined number without having received a restraint pulse cancellation. The count system is activated only after a predetermined level of total restraint is achieved thereby assuring the fastener is seated and the fastener tension is increasing in its linear range.