A tubular body section having threads attached at one end and a nut held captive on the other end with a tool engaging portion attached intermediate the threads and nut and a method of making the foregoing including the steps of forming the tubular body section from sheet metal, positioning the tool engaging portion on the tubular body section, providing a thread form on the tubular body section adjacent one end thereof, brazing the parts together, thereafter positioning the nut on the other end...

A method of attaching a bracket to a tooth comprising the steps of providing a bracket through which ultraviolet light can be transmitted, applying an adhesive which hardens when exposed to ultraviolet light to an area where said bracket is to be secured to said tooth, placing said bracket on said tooth, and exposing said adhesive to ultraviolet light by directing ultraviolet light through said bracket to harden said adhesive and thereby bond the bracket to said tooth. An orthodontic bracket ins...

A blasting method and primer assembly for blasting agents wherein the primer assembly comprises a high explosive priming charge, a connector and an intermediate length of detonating cord, the connector being adapted to hold the detonating cord in close lengthwise proximity to and slidably movable along a downline of detonating cord.

This invention relates to the formation of a new composition of matter, active as a fungicide. This product is prepared by heating either methyl levopimarate or a salt of levopimaric acid in the presence of a proton acceptor such as potassium hydroxide, sodium hydroxide, tris-n-butylamine, etc., and the resulting mixture ozonized and the ozonide oxidized with chlorine.

Method of affecting separation of particulate matter from a gaseous carrier by selective subdivided passage of said carrier through a plurality of discrete filter chambers disposed in vertical superposed relation interconnected by a vertically oriented conduit member that is constituted, at least in part, by permeable filter medium that forms a portion of the defining walls of each such chamber. The invention also includes an improved cleaning method wherein the filter media associated with each...

A prosthetic denture and method of manufacture comprising a set of artificial teeth which are reinforced at their base portions by a U-shaped frame. The set of artificial teeth are bonded to a fairly rigid continuous thermoplastic or thermoset material. As a second stratum another less rigid thermoplastic or thermoset layer is included. The latter layer is deformable to intimately fit the gum area and/or the palatal area of the mouth. The denture is used by placing it in a person's oral cavity a...

A method and apparatus are disclosed for brazing articles such as honeycomb sandwich structures. The apparatus includes a cold wall box-like housing separable into upper and lower sections. Each section carries a ceramic die member provided with passageways terminating in small ports for conducting a cooling fluid adjacent to the work. The workpiece is heated by electrical resistance heater strips passing above and below the workpiece. Means are provided for evacuating the housing and back-filli...

The present invention relates to a method for esterifying an aromatic acid component consisting primarily of terephthalic acid with a glycol component consisting primarily of ethylene glycol which comprises conducting the esterification in the presence of an alkyl amide having a boiling point lower than that of ethylene glycol and represented by the following general formula: ##SPC1## Wherein R.sub.1 is a hydrogen atom or an alkyl group, each of R.sub.2 and R.sub.3 is an alkyl group or one of th...

Method and apparatus for installing electrical wire or the like along a predetermined path on the surface of a base member by providing a groove in the surface of the base member along the predetermined path, simultaneously positioning in the groove guide means for laying said electrical wire and nozzle means for applying a material for maintaining the electrical wire within the groove, and then feeding electrical wire and said material to said guide means and nozzle means while moving the guide...

This invention relates to a vitreous semiconductor comprising at least one metal and at least one nonmetal which is solid at room temperature, the semiconductor having at least 0.5 atomic percent metal and a greater than stoichiometric percentage of nonmetal. The invention also relates to a method for producing such semiconductors by coevaporating the metal and nonmetal and simultaneously quenching said metal and said nonmetal onto a substrate held at a temperature below the condensation point o...