An acoustic method and apparatus for investigating an earth formation penetrated by a borehole are described. Acoustic transducers are mounted on a tool to accurately determine the distance between a segment of the tool and the wall of the borehole. The acoustic transducers are positioned in such manner that the stand-off distance between individual resistivity measuring electrodes in an array, wh...

PURPOSE:To reduce the factor of labor for assembling a speed change gear and to smoothly reduce the speed change gear in its weight by solidly forming side walls clamping a sun gear and a planetry gear and a guide wall for guiding lubricating oil to a engagement portion with a metal plate by pressing. CONSTITUTION:A lubricating oil flow-out device 45 of a speed change device T includes the first a...

A rotary punch for punching envelope blanks from moving webs of paper or the like or for making shaped cuts from prepared envelope blanks has a backup roll which bears on a cutter roll. The punch is characterized by the provision of intermediate bearings with an adjustable member therebetween. This precludes unwanted movements in the bearings between the two rolls due to varying cutting and out-of...

PURPOSE:To automate the attaching of a bead and the folding of a ply and to uniformalize the products, by providing a bead supporting segment with a movable piece capable of moving axially outwardly the bead together with a tool head with the bead forced against the ply. CONSTITUTION:The ply 28 is wound around a dry 27, and the ply end is folded inwardly to be forced to engage with the drum side s...

The invention relates to a cross-country skiing or ski-hiking ski binding, comprising a slide 12 rotatably carrying two jaws 14 intended to grip the ski boot and having cam surfaces 26 applied via a spring 60 onto a piece 28 which is stationary relative to the ski, so that the spacing of the jaws 14 relative to each other is reflected in the displacement of the slide 12 relative to the piece 28 an...

Process for adhesively bonding a face 31 of a first rubber body 3 or 30 or 7 onto a face of a second rubber body 1, consisting in: a. applying the said face 31 of the said first body 3 or 30 or 7 to the said face of the said second body 1 with interposition of a layer 2 of vulcanisable bonding gum; b. evacuating the gaseous inclusions trapped between the said rubber bodies and/or resulting from ...

Samples are taken from the tissues thereby that certain parts thereof are pyrolysed punctiform and the pyrolysate so obtained is collected and its composition is examined and the results of this examination are compared with reference data. Thereby the character of the tissue is determined, whereafter samples are taken repeatedly and the boundary of the tissues is indicated and the separation is p...

Drying felts provided with a seam in order to facilitate mounting in a paper machine and press felts with such a seam in order to prevent the paper web from being marked by the seam have a wadding flap covering the seam as a continuation of the wadding layer which is fastened to the felt. The wadding flap is worn in different ways when the felt is used in a paper machine and its firmness limits th...

An apparatus for atomization of high temperature melts to from very finely divided powder. The apparatus has a ceramic central melt delivery tube. Melt is introduced at the top and exits at the bottom. At the exit surface a high velocity gas impinges on the melt to atomize the melt into fine particles. The bottom portion of the melt delivery tube has an internal shape to expand the external config...

An apparatus for atomization of high temperature melts to from very finely divided powder. The apparatus has a ceramic central melt delivery tube. Melt is introduced at the top and exits at the bottom. At the exit surface a high velocity gas impinges on the melt to atomize the melt into fine particles. The bottom portion of the melt delivery tube has an internal shape to expand the external config...

In atomizing a body of molten material having elevated melting point by directing the molten body as a stream into an atomization zone and directing a stream of atomizing gas into said stream to atomize and disperse it, the orifice from which the gas is delivered is positioned closely proximate the surface of the stream to be atomized, e.g. less than 0.45 inches way. A large percentage of fine par...

In atomizing a body of molten material having elevated melting point by directing the molten body as a stream into an atomization zone and directing a stream of atomizing gas into said stream to atomize and disperse it, the orifice from which the gas is delivered is positioned closely proximate the surface of the stream to be atomized, e.g. less than 0.45 inches way. A large percentage of fine par...

The method of producing fine powder molten metal comprising providing a source of the molten metal to be atomized, delivering molten metal from said body to an atomization zone through a melt delivery tube, the portion of said delivery tube which is exposed to said atomization zone consisting essentially of boron nitride, directing a stream of atomizing gas against said stream in said zone to atom...

The method of producing fine powder molten metal comprising providing a source of the molten metal to be atomized, delivering molten metal from said body to an atomization zone through a melt delivery tube, the portion of said delivery tube which is exposed to said atomization zone consisting essentially of boron nitride, directing a stream of atomizing gas against said stream in said zone to atom...

Non-woven webs are impregnated with 15-60wt% of a composition comprising a latex containing 30-65wt% of one of three defined types of copolymer each containing units of a carboxylic acid or anhydride monomer, the latex being neutralised to pH5-9 by an alkali metal base. A copolymer of styrene/butadiene/acrylic acid is used in examples. The composition may also contain a latent acid, e.g. NH4Cl.

Non-woven webs are impregnated with 15-60wt% of a composition comprising a latex containing 30-65wt% of one of three defined types of copolymer each containing units of a carboxylic acid or anhydride monomer, the latex being neutralised to pH5-9 by an alkali metal base. A copolymer of styrene/butadiene/acrylic acid is used in examples. The composition may also contain a latent acid, e.g. NH4Cl.

A process for the manufacture of a non-asbestos corrugated sheet comprising forming into corrugated form an aqueous slurry of a mixture comprising, on a dry weight basis, 40-60% cement, 30-40% silica and 5-15% cellulose fibres, compressing said corrugated form so produced in a press to reduce its thickness and increase its density, removing said form from said press and submitting said form to aut...