This application discloses a method of joining two materials together by alloying wherein only a portion of one of the materials is heated to a temperature less than its melting point but greater than the eutectic temperature of the two materials. After the portion of the material has been so heated, the second material is brought into contact with the heated portion. A cooling medium may be passed over the materials alloyed to aid in the cooling of the alloy junction. A preferred embodiment of ...

A substantially prismatic or cylindrical article having two parallel, plane end faces is provided with a tubular sheath of a shrinkable plastic sheet material the end portions of which project beyond said end faces. The sheath is subjected to heat to make said end portions shrink into plane shape. The length of the projecting end portions is such that they when shrunk do not entirely cover the respective end faces. Prior to the heating step, a patch of plastic sheet material is applied to each o...

A filter element for the high pressure filtration of synthetic polymers is locked and sealed in a filter body by providing a peripheral shoulder in the filter element and a soft metal rim seated in the peripheral shoulder, the rim having a longitudinal corrugation which is flattened to radially expand the rim inward and outward to lock and seal the filter element in the filter body. A hard metal locking rim may be used to provide a seal if a means is provided to maintain a pressure on the rim to...

A method and apparatus for finish boring a bore in a workpiece wherein a tool is moved axially and rotated with respect to the bore to take a first cut and is thereafter moved radially outwardly and retracted axially while rotating the tool relative to the workpiece to provide a finish cut resulting in a finished bore.

Method an apparatus for sealably securing a plastic closure to a thin-walled flexible tube by spin-welding wherein the tube is held against the closure by resilient clamping means during rotation of the closure. In one form of the invention the closure may be welded to a tubular container after the tube is filled.

A method for duplex printing by forming on the surface of a first plate an electrostatic latent image conforming to the information to be placed on the first side of a support material, then forming on the surface of a second plate an electrostatic latent image conforming to the information to be placed on the opposite side of the support material, developing the latent images, and transferring the developed image on each plate to its respective side of support material.

A drilling method which includes the usual steps of rotating a drill string and circulating a drilling fluid together with the steps of detecting an increase in the rate of increase of temperature of the drilling fluid and taking appropriate steps responsive to such increase in rate such as increasing the weight of drilling fluid, setting casing to allow drilling fluid weight to be increased, to prepare for a high pressure formation being approached by the drill bit or stopping the drilling to a...

A method of knitting a sleeved garment on a knitting machine, the method including the steps of knitting a first fabric portion constituted by shoulder portions of the sleeves in reciprocatory manner on both beds of a pair of opposed beds of a knitting machine such that pieces of each shoulder portion on the two beds are joined together at the edge of the sleeve which is innermost on the machine, and knitting a second fabric portion constituted by front and rear upper body portions of the garmen...

A composition and method for preventing catastrophic vibration of a drill string during slim hole drilling wherein there is employed an additive composed of sulfurized lard oil, mineral oil, and halogenated paraffin.

A chamber mining technique whereby a series of horizontal slopes are formed between haulage and bleeder entries. Upon completion of a crosscut, the top and sides are drilled and blasted in a retreat operation and the broken ore is hauled out. The mined-out area need not be entered and there is no need for support or scaling since failure of walls between stopes will at no time endanger men and equipment.