Abstract: An overshot adapted to engage and disengage a fishing neck in a well bore. The apparatus comprises an overshot body, a set of collet fingers which deflect radially and have a surface to grasp a fish in a well bore, a tapered surface abutting the collet fingers which deflect inwardly and outwardly to engage and disengage the fish, and a cam and cam follower mechanism. The cam preferably includes a set of inwardly projecting pins which engage grooves formed on a cam body. The grooves cause the cam body to move upwardly and downwardly with respect to the overshot body. The cam body reciprocates, moving the fingers relative to the tapered surface, thereby providing the engagement and disengagement movement. The cam body causes repetitive movement lengthwise of the cam body relative to the pins which serve as a cam. The groove enables movement toward one end of the body and then toward the other. A spring forces the cam body in one direction while it is forced in the other direction by contact with the fish.

Abstract: A method of and apparatus for cutting substantially vertically disposed pipe is disclosed. The substantially vertically disposed pipe is cut by positioning a receiving member around the pipe at a predetermined distance from the desired cutting plane. A cutting element is mounted on a frame for moving circularly around and radially toward the pipe and the frame includes supports for locating the cutting element at a predetermined distance from the receiving member and for supporting the frame uniformly about the pipe. The frame is positioned around the pipe and the supports are mounted on the receiving member to locate the cutting element within the desired cutting plane. The frame is then prevented from moving relative to the vertically disposed pipe and the cutting element is moved circularly around and radially toward the pipe to cut the pipe along the desired cutting plane at the predetermined distance from the pipe receiving member.

Abstract: A portable airless spraying device using an airless spray gun for spraying paint and a hose mounted with the spray gun for carrying paint to the gun is disclosed. The device includes a vessel having a dividing wall to provide a first compartment within the vessel which holds a quantity of paint and a second compartment within the vessel for holding pressurized gas. A gas inlet is mounted with the second compartment of the vessel for receiving a supply of gas and a paint inlet is mounted with the first compartment of the vessel for receiving paint. Coupling apparatus is mounted with the first compartment for mounting the hose to the vessel and a pick-up tube is mounted within the first compartment of the vessel with an inlet in close proximity to the bottom of the first compartment and an outlet mounted with the coupling apparatus.

Abstract: A check valve is disclosed which uses a valve body having a bore with a first section smaller than a second section, an inlet communicating with the first section to receive flowing fluid, a shoulder disposed between the first section and the inlet for providing a valve seat, and an outlet communicating with the second section for discharging the fluid. A valve element is mounted within the inlet for engaging with the valve seat to shut off the fluid flow. A movable piston is mounted with the valve body to control movement of the valve element. The piston has a body portion slidably mounted with the second section, the body portion having a shoulder facing away from the valve element; a male portion is slidably mounted with the first section and extends from the body portion, the male portion having a shoulder facing toward the valve element; and a stem extends from the male portion into the inlet of the valve body for mounting with the valve element.

Abstract: A check valve used in a fluid flow line is disclosed and includes a body having a first portion defining an inlet passageway, an outlet passageway and a shoulder which directs fluid flow upwardly through an opening into the outlet passageway and a second portion with a tubular section threadably engaged in the opening which receives the flowing fluid in one end for flowing up the tubular section and out outlet ports. A flange extends outwardly from the tubular portion at a location below the outlet ports to define an upwardly facing sealing surface. A plunger member is mounted within the body and includes a plug slideably mounted within the longitudinal passage and a tubular sleeve mounted to circumscribe the tubular section with the sleeve having a shoulder forming a downwardly facing sealing surface which is engageable with the upwardly facing sealing surface on the flange, the sleeve being moved upwardly by the pressure exerted by the fluid on the plug.

Abstract: The present invention relates to a new and improved method of unloading dry particulate matter in containers wherein the containers are positioned in an enclosed drum and rotated. Thereafter, a releasable spout mounted with the drum enables the dry particulate matter to be dumped or released from the drum without danger to workmen or dangerous spreading of the dust from the dry matter.

Abstract: A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of segments positionable in end-to-end relation around the pipe. Each segment includes spaced parallel annular lips flaring from its inner periphery with each lip being an integral part of the segment and having a bent tip portion extending toward the matching oppositely positioned tip portion of the opposite lip. A connecting means is used to connect the segments together in end-to-end relation, the lips extending from the segments to thus form an annular recess around the pipe when the segments are connected. An access means is provided in the frame to permit passage of a liquid sealant into the recess and the lips direct flow of the sealant into direct contact with the pipe to form a self-energizing seal between the lips and pipe.

Abstract: A self-propelled drilling tender has mounted therewith a drilling rig and a jack-up platform adapted to be mounted on the drilling tender or ship for transportation from one drilling site to another site. Thereafter drilling operations occur with the drilling on the ship thus enabling the ship to operate as a drilling ship or the platform legs can be lowered to jack the platform off the ship to thereby enable the platform to operate independently as a drilling platform. Further, if desired, the rig can be disassembled or lifted from the drilling platform and moved to land operations adjacent or in the vicinity of the drilling platform and ship to thereby enable land drilling operations to occur.

Abstract: Apparatus is provided for cleaning a filter to permit continuous gas filtering operations. At least one filter is used in a gas filtering device to remove particulate matter from the gas. A support mechanism movably supports the filter. Urging apparatus is used in the device for urging the filter into a tense position. Releasable automatic moving apparatus is provided to automatically overcome the urging apparatus and moving the filter to a less tense position and thereupon released for returning the filter to the tense position thereby causing removal of particulate matter from the filter.

Abstract: A vibratory separator for separating drilling solids from drilling mud after return from the well bore, including a separator screen and a screen cleaning device positioned adjacent the screen. The screen cleaning device is supported by suitable means to permit filtered mud to pass freely through the device for collection below. The screen is a fine wire mesh mounted in a unique manner to the separator housing such that it vibrates during operation of the system to keep drilling solids from clogging the wire mesh and restricting the flow of drilling mud. The screen cleaning device serves to support the screen and mud thereon in addition to vibrating and wiping the screen as the device rotates due to the orbital oscillatory vibrations of the system.

Abstract: In one exemplar embodiment, a combination closure conduit and closure plug are provided for closing a side opening into a pipeline. The closure stub or conduit is attached to the pipeline around the side opening and has an interior annular shoulder. A closure plug adapted for insertion into the conduit has a projecting peripheral shoulder and provides a first sealing means. A peripheral sealing means disposed on the plug ahead of the peripheral shoulder provides a second means of sealing the plug to the conduit. Locking screws engage a peripheral surface on the top of the plug to lock the plug in place. A by-pass valve is carried by the plug to allow fluid communication through the plug during insertion of the plug.

Abstract: A releasable stabilizer is disclosed for adjustable positioning along a drill string. The stabilizer includes a body positionable around the drill string; a coil spring mounted within the tubular body with the spring having a first and second end; anchoring apparatus mounted with the body to prevent the first end of the string from moving circumferentially around the drill string; and a rotating apparatus mounted with the body for moving the second end of the spring circumferentially around the drill string and anchoring the second end after the spring has gripped the drill string sufficiently tight to secure the body to the drill string while permitting the second end to be released when desired.

Abstract: A flanging tool used with an impact tool to attach a vehicular door panel to a door frame is disclosed. The flanging tool has a connecting end and a crimping end with means attached to the connecting end for connecting the shank to the impact tool. A hook is mounted with the crimping end of the shank for folding a door panel edge over and crimping the edge to the door frame lip. The hook has a flared lip to aid in folding the edge over the lip and a crimping portion to force the panel edge against the door frame lip. The crimping portion is of generally U-shaped cross-section with one side of the "U" extending into the shank and the other side of the "U" extending into the flared end which generally curves outwardly from the shank side. The folding and crimping of the edge to the door frame lip is accomplished by use of the impact tool.

Abstract: In one exemplary embodiment, the efficiency of an acoustic-energy-type cleaner for vessels, such as heat exchangers, is substantially increased by propagating through the fluid in the vessel, a plurality of opposing acoustic wave trains, and continuously varying at least the frequency or phase relationship of said opposing wave trains for causing constructive interference between said opposing acoustic waves to create a series of augmented acoustic waves that are spatially displaced in relation to each other and successive in time interval for sweeping over the surfaces of the body to be cleaned.

Abstract: A method and apparatus for a tapered pipeline seal includes a means for enabling a line to be sealed with a rotatable tapered sealing plug or apparatus.

Abstract: A new and improved method and apparatus for plugging a branch line connection from a main line connection includes welding a suitable flange connection to the main line across from said branch line, tapping the walls of the main line from the flange connection to the branch line and positioning a plugging member adjacent and in said branch line wherein the plugging member seals against the inner surface of the main line which is normally smooth and also enables the pressure in the main line to further enhance the seal by enabling the pressure from the main line to exert pressure on the rear of the plug to seal against such main line immediately adjacent and around the periphery of the opening of the branch line.

Abstract: A tool is disclosed which fishes an object from a bore hole. The tool uses a tubular body having an upper and lower end, fingers are mounted within the body for moving between an opened position and a closed position and a spring is mounted within the body to use the fingers toward the lower end of the body. The movement of the fingers between the opened and closed positions is controlled by a camming mechanism slidably mounted within the body, which uses a sleeve forming a cam face defining a recycling "J" slot grooves and a pin extending from the body into the groove to cause the sleeve to rotate. Lugs are mounted with the sleeve for nesting within slots formed in the body to limit movement of the pin within the stems of the "J" slotted grooves.

Abstract: A releasable spear adapted to be run on a wireline or a tubing string, as desired, incorporates an elongate body and an external slidable sleeve. The sleeve is forced downwardly by a compressed spring at the top end of the sleeve. The sleeve supports a pair of internal projecting lugs which are received in an external groove formed in a tubular member. The lugs and groove function as a cam and cam follower mechanism controlling upward and downward movement. The body terminates in an elongate tapered plug. The lower end of the sleeve incorporates a set of collet fingers which have external upwardly facing serrations to lock on the interior of a fish. The external sleeve incorporates a protruding shoulder which catches the upper end of the fish. The cam and cam follower mechanism controls axial movement of the elongate tapered plug to force the collet fingers outwardly to engage, or cause them to deflect inwardly to disengage a fish.

Abstract: An apparatus adapted to be connected in a drill string is disclosed. It utilizes an axially located turbine which is driven by the mud flow through the drill string. The turbine is supported by a shaft and connected to an appropriate gear train. The gear train rotates an outer sleeve which has multiple turns of an external screw thereon. The screw or helix extends toward the wall of the drill bore. The helix lifts the column of mud in the annular space above the drill bit away from the drill bit thereby reducing the back pressure just above the drill bit. This improves the jetting action of the mud pumped through the drill bit and provides for a more rapid excavation of the immediate vicinity, thereby increasing the rate of penetration of the drill bit.

Abstract: In one exemplar embodiment, a leak repair clamp for pipe and pipe flanges, valve bonnet flanges and the like is disclosed having a divided clamp frame positionable about the pipe or pipe flange. The divided clamp frame has a pair of spaced parallel channels disposed about its inner periphery. Deformable self-energizing seal members are disposed in each of the channels and having a flexible sealing tip portion radially extending from the inner periphery of the clamp frames. A retaining member is disposed in each of the channels adjacent the seal member for engaging the seal and the channel and retaining the seal member fixed within the channel.