Abstract: Machine for stone blocks' sawing.The sawing machine includes a frame mounted in order to pivot around a horizontal axis (6) and wearing two saw blades (8) on each side of this frame, the cutting edge of the blades (8) having an arc shape which center coincides with this horizontal axis (6).Means are provided to animate the frame with an oscillating movement around this horizontal axis (6) and to have a forward movement horizontally of the stone blocks (23) in direction of the saw blades (8).The machine is used for cutting particularly hard stone blocks in slabs (FIG. 1).

Abstract: Adjustable torsional type latching means (5) for triggering a mechanical well jar tool comprises torsionally actuated gear racks (20,22) including acme threads or teeth which extend axially on opposite adjacent side portions of telescopic parts (1,2). The gear rack teeth which mesh in the latched position have incline tooth faces that can be disengaged by applying a strong axial force which torsionally stresses and rotates a torsion sleeve (16) portion of one telescoping part (1) and gear rack (20) thereon away from the other part (2) and gear rack (22). Upon release of the latching device (5) the telescopic parts (1,2) of the well jar and the kinetic energy stored therein are freed for a limited longitudinal jarring movement. The torsion sleeve portion (16) has an end portion connected to the other telescopic parts by a second slot-spline-gear (15) of relative short axial length, which serves as a torque support in the latched position and becomes deengaged during a jarring stroke.

Abstract: A stable lightweight low mass recrystallized silicon carbide kiln furniture module (M&M') adapted for mounting on a kiln car (C, C') has a plurality of triangularly arranged post support blocks (20, 20') and hollow one piece vertical posts (30, 30', 30", 32, 32') inserted therein. The posts are provided with vertically spaced ledges (30a, 32a) or hollow pins (30a', 32a') or notches 30a" supporting refractory batts (34, 34', 34") and hollow end caps (36, 38, 36') with tie pins (36a, 38a, 36a') insertable into upper open ends thereof. Thin overlapping tie plates (40, 40') each with triangularly arranged holes interconnect with and tie the tie pins, (36a, 38a, 36a') end caps (36, 38, 36') and posts (30, 30', 30", 32, 32') together and a hollow tie bar (42, 42') interconnects with and ties the posts (32, 32') and overlapping inner portions of the tie plates (40, 40') together.

Abstract: A self powered downhole tool anchor device (10) preattached to a downhole tool (T) and unitarily supported by a drill string (DS) for a single trip into a well bore, actuated by forceful engagement with the bottom or plug (P) in the well bore and attachment to a well bore casing (C). The anchor device comprises an inner mandrel (20) and lower cone (34) containing a piston (30) and fluid (F) for axially displacing an outer mandrel and piston (44) connected thereto by shear screws (46). An upper cone (20) on the outer mandrel is connected by shear pins to a slip housing (50) containing radially expandable slips (38) keyed to the lower cone (34).

Abstract: A multi position safety valve retainable within an internal portion of a drill string casing (s) and responsive to the greater differential pressure in an internal fluid passage to displace a valve head (32) relative to a valve seat (VS) from its normal partially open position to either a wide open or a closed position. The valve head (32) is attached to a valve stem (30) that extends through a valve chamber and slideably mounted in opposite closed ends of a valve body and returnable to and maintained in the partially open position by opposing compression springs (34) (36) situated between opposite ends (22) of the valve body (VB) and one side of an intermediate abutment (30c) of the valve stem (30) and an intervening disc (38) on the opposite side thereof. The disc 38 is moveable into and out of seating engagement with an intermediate stop (20a) by one spring (34) and the intermediate abutment (30c) of the valve stem respectively.

Abstract: A core barrel flushing device and method is disclosed particularly for flushing drilling fluid, mud and other undesirable material from a pressure core barrel downhole at existing conditions and pressure.The flushing device (F) comprises an outer barrel attachable to the drill string and core barrel (10), and an inner barrel (90) within the outer barrel (70). A sealed chamber (C) within the outer barrel (70) contains a piston (114) and flushing medium (M) displacable from the chamber (C) and into the core barrel during forceful displacement of the piston following actuation of the flushing device.Actuation of the flushing device is initiated by means (B) passed down the drill string into engagement with actuating means (94) allowing displacement of the piston and flushing medium from the chamber into the core barrel.Tripping means (112) are also disclosed responsive to the final movement of the piston to actuate, and seal the flushed pressure core barrel (10) and core sample (51) therein downhole.

Abstract: A drill bit (10) comprises a cast body (12) with full length wide overlapping integral spiral stabilizer lands (14) between intervening spiral grooves (16), integral short, strong, stubby spiral fingers (18) reinforced by additional web portions (12a) angularly spaced about a short core receiving bore (b) and the longitudinal axis of the body (21).An inclined core ejection passage (P) extends radially outwardly from a spherical inlet end thereof connected to the core receiving bore (b) and at which an inclined hard core cutter breaker inserted within a pocket is situated. The leading sides of the fingers have support surfaces (18a) and shoulders (18b) for supporting engagement with composite abrasive compact cutters comprised of a carbide backing (30a) bonded to the support surfaces (18a) and layers of bonded polycrystalline abrasive particles at opposite cutting sides (30b) inclined at a negative rake angle.

Abstract: A device (10) is disclosed for mounting a hearing protector (90) on each side of a hard hat, pressing the hearing protectors at a substantially constant force about the ears and moving them in oppositely incline planes between an operative wearing position (W) and an extended inoperative pressure relieved stored position (R). Each device comprises support means (20) including a pivot (28) adapted for attachment to and retained to a side of the hard hat (H), by retainer means (30), guide means (40) (50) including at least one incline surface (44) (54) and a key boss (46) (56) projecting into a key hole shape slot (74) in a rigid central end portion (72) of a resilient flexible support arm (70) secured by releasable clamping means (60).

Abstract: A flame spray gun (10) for feeding and melting rods (R) of heat fusible material and spraying molten droplets thereof onto a substrate comprising an improved main supply valve connected to air, fuel gas and oxidant conduits (14-22) (44-48) including air, fuel gas and oxidant inlet and outlet chambers (28-38), continuous seals (40) and vents (42) between the chambers, a valve shaft (50) with axially spaced slots movable within a bore and seals to connect the inlet and outlet chambers, a valve locking device (54-56) for maintaining shaft (50) either in a LIGHTING or ON position and an unlocking device (62-66) to release biased valve shaft to an OFF position. An improved combustion head (70) and flame spray nozzle (82) has seals situated on opposite sides of oxidant and fuel gas chambers and between the combustion head and nozzle.

Abstract: A device (10) is disclosed for mounting a hearing protector (90) on each side of a hard hat, pressing the hearing protectors at a substantially constant force about the ears and moving them in oppositely incline planes between an operative wearing position (W) and an extended inoperative pressure relieved stored position (R). Each device comprises support means (20) including a pivot stud (28) adapted for attachment to and retained to a side of the hard hat (H), by retainer means (30), guide means (40) (50) including at least one incline surface (44) (54) about the pivot stud projecting into an elongated slot (74) in a rigid central end portion (72) of an adjustable support arm (70) secured by releasable clamping means (60). Support arm (70) has at least one flexible resilient leg of fixed length extending from the rigid central portion (72) to a fixed pivot axis or point of connection (80) with a hearing protector (90).

Abstract: Protective unit (10) including a hard hat (12) with a lower rim or flange (12c), an accessory such as goggles (20), a goggle or accessory band or cord (22) attached to a plurality of accessory band attaching and retaining clips (30) attached to the lower rim of the hard hat. Each clip 30 has a slot of special configuration adapted to accept at least one and preferably a plurality of rims or flanges (12c) of different configuration (60, 70, 80 and 90), a substantially rigid stationary portion (32) and an opposing resilient clamping portion (42) for clamping engagement with opposite sides of the rim (12c), an opening (56) adapted with an expandable side passage or entrance to receive the band without threading therethrough or detaching it from the accessory and latching means (52) (54) (57) (58) latched to prevent escape of the band and unlatched to insert and remove the band (22).

Abstract: This invention relates to improvements in pressure core barrels of the type described in U.S. Pat. No. 3,548,958 wherein a controlled pressure is maintained on a core sample during surfacing. Among the improvements provided by the present invention are an improved arrangement of the pressure control valve, a device for positively latching the assembly (both in the open and closed positions) and the provision of a hydraulic assist for moving the outer barrel to the sealing position. Another particular feature provides an improved device for flushing drilling mud from the core barrel mechanism with sealing valve open and while the core sample is maintained substantially at a pressure at which it was sealed in the bore hole and to facilitate subsequent freezing and removal of the core sample therefrom for analysis.

Abstract: Safety spectacles (10) comprising a one piece flanged and curved front face piece (12) adapted to wrap around the forehead to the wearers temples. The face piece (12) is provided with a nose piece (14), a substantially distortion free spherical viewing and eye shield front wall portion (16) of varying thickness, an upper protective flange (18) and opposite side portions (20) with upper and lower flange portions (22) (24) including pivot pin receiving apertures therein pivotally hinged to temple bars (30). Each temple bar is provided with upper and lower pivot pins (32) projecting outwardly from upper and lower extensions of flanges (36) (38) extending inwardly from a relatively wide forward portion of the side wall (40) with or without vents or louvers (L).

Abstract: A low flow liquid distributor and redistributor for a liquid/gas contact tower comprises: one or more receptacles each extending over a cross sectional area of the tower chamber and adapted to receive a source of liquid supplied either directly thereto or indirectly from the source via liquid feed splitter means that divides and dispenses the liquid received to each receptacle. Each receptacle has at least one side wall including one or more metering weirs dividing the liquid flow into one or more streams directed against a liquid distribution drip plate situated relatively close to the sidewall of the receptacles.

Abstract: Organic bonded abrasive bodies such as snagging wheels and wheel segments for conditioning billets, slabs, and castings have abrading portions with 0 to 8% pores by volume, a low abrasive content of from 24 to 45% by volume of 4 to 36 grit size abrasive, substantially constant volume of a thermosetting resin of from 18 to 24% by volume and a high content of filler material constituting from 29% to 56% by volume of the body and wherein at least 80% by volume of the filler material is inorganic material.

Abstract: A high speed rotatable elongated holeless reinforced resin bonded abrasive body (10) comprising a central mounting portion (12) including diametrically opposite arcuate segments (14) with arcuate inclined surfaces (16) angularly displaced normal to diametrically opposite grinding portions (18) extending radially therefrom to arcuate grinding surfaces (22) and reinforcing elements (26) bonded to and extending continuously through the central portion (12) and grinding portion (18).Spindle mounting means (40) (70) are provided with inner drive flanges (44) (74) and outer clamping flange (60) for clamping and driving a single abrasive body (10) an outer flange (90) for clamping and driving a plurality of angularly spaced abrasive bodies (10a and 10b) and to which flanges (60) (90) additional similar clamping drive means may be fastened and angularly spaced from one other, to mount additional abrasive bodies (10) to the spindle mounting means (40) (70).

Abstract: Earplug unit with inserter and tie adapted to be worn as a unit which can be folded and compacted into a relatively small carrying case, comprises one or a pair of earplugs (10) (30) each having an outer end attached to one or both ends of a tie member (22) (32) on which is slideably carried and retained an earplug inserter moveable from a carrying position into engagement with the outer end of an earplug for its insertion into the auditory canal (c) of an ear (E).

Abstract: A segmental grinding wheel includes abutting, interfitting and interchangeable composite abrading segments clamped to a rotary chuck, each of which comprises a preformed bonded abrasive segment of simple shape with at least a portion of each side, except a working face thereof, encased in a relatively non-abrasive precision molded plastic shell of precise dimensions, more complex and perfect interfitting configuration. The shell is preferably made of material that is or contains a grinding aid, prevents coolant swarf from filling the pores of the abrasive segment and reinforces the abrasive segment.

Abstract: Precision molded plastic cellular packing elements (10 and 40) of polygonal and curvilinear spriral shape are provided for mass transfer and effluent treatment apparatus. Each spiral element (10 and 40) has more than one convolution (16 and 46), a maximum transverse width (W) significantly greater than its axial height (H) whereby it has a greater tendency to orient itself horizontally and its relatively shorter wall surfaces substantially vertical, angularly spaced ribs (24-26) (52-54) which extend from the axis (x) and interconnect the convolutions; and wherein adjacent wall portions of the ribs and of the spiral convolutions around open end cells of the element are either in alignment or inclined in one direction, or oppositely inclined relative to one another whereby the element may be provided with either or a combination of straight, tapered or oppositely tapered cells.

Abstract: A fluid injection packing support with improved directional fluid flow characteristics, increased strength, rigidity and load carrying capacity includes a plurality of adjoining elongated hollow sections extending across a tower chamber and supported at opposite ends by a ledge fixed to the wall around the chamber. Each section has a spaced pair of inclined sidewalls diverging downwardly from an upper arched top wall portion to adjacent horizontal wall portions extending to adjoining short vertical wall portions. The inclined and horizontal wall portions have apertures with smoothly curved entrances and raised flange portions extending around and projecting to more sharply defined exit ends of the apertures which not only strengthens the wall and section but provides low resistance to the entrance and flow of the counter flowing fluids in one direction and greater resistance to the entrance and flow of the counter flowing fluids from the opposite exit ends of the apertures.