Abstract:
Apparatus for opening a carcass hide preparatory to removal of the hide (20) from the carcass (26). The apparatus includes a clearing blade (11) with a leading cutting edge (16) which is inserted between the hide (20) and subcutaneous tissues (21) and is advanced along the carcass (26) to separate the hide (20). An opening blade (31) trails behind the clearing blade (11) and creates an opening cut along the hide. The hide edges (22, 23) peel up and outwardly and can be clamped. A drive arrangement (50) includes a mounting (51) for the clearing blade (11) and the opening blade (30) and drive means (52) to advance the mounting (51) along a track (56) located adjacent to the carcass (26). Rump lifting means (65) elevates the carcass rump to the desired height for starting the hide opening at the cleared opening (61) at the anus.
Abstract:
A cored electrode wire for pulsed electric arc welding, wherein said core includes from 2.5 to 12% calcium fluoride, from 2 to 8% calcium carbonate, from 0.2 to 2% silicon dioxide and from 0.5 to 1.5% of a fused mixed oxide. Also disclosed is a cored electrode wire for pulsed electric arc welding, wherein said core contains from 4 to 15% elemental manganese and from 2 to 8% elemental silicon, the remainder of the core comprising fused mixed oxide, desired alloying components and iron powder. In each of the above cases, the wire is suitable for use with the following welding pulse parameters: pulse energy: 8 to 250 J and preferably 10 to 120 J; pulse frequency: 10 to 500 Hz and preferably 15 to 350 Hz; background current: 8 to 250 A and preferably 10 to 100 A; wire feed speed: 1 to 20 m/min and preferably 4 to 17 m/min.
Abstract:
Liquid dye deposited on the pile (18) of a carpet tile can be fixed by inserting an array of heated pins (11) into the pile. The pins, mounted on a block (12), penetrate the tufts of the pile which have liquid dye thereon, but do not penetrate the backing of the carpet tile. A heating element (13), to raise the pins to the fixation temperature of from 90 DEG C to 100 DEG C, is clamped to or located within the block. Preferably, both the block and the pins are made of metal (not necessarily the same metal). This equipment can be used to heat other penetrable media. Replacement of the heating element with a cooling element enables similar equipment to be used to cool a penetrable medium.
Abstract:
An electric arc reactor having a substantially straight feed material passage (8) extending through both the anode and the cathode (1, 2). Gas is fed into the gap (5) between the two electrodes (1, 2) so as to swirl about the axis (17) of the feed passage and thereby confine the lateral extent of the arc (15) and also confine the location at which the upstream arc root (18) attaches to the upstream electrode (1). An enlargement (12) of the passage in the gap end of the upstream electrode provides an internal sloping root attachment surface (31). A similar enlargement may be provided in the downstream electrode, but spaced from the gap (5), if the downstream electrode (2) forms the cathode. Gas flow (16) in a direction towards the upstream end of the feed passage is used to control the location at which an arc root (18) attaches to the sloping surface (31) of a passage enlargement (12). Magnetic means (14) is provided to induce rotation of the arc (15) such as to form a hollow arc column which is coaxial with the feed passage (8) and through which feed material can pass.
Abstract:
An electric arc generating device including, a first electrode (1) and at least two further electrodes (2, 3, 4). A source of electrical power (11) is connectable to said electrodes so as to cause an arc to burn between the first electrode and one of the further electrodes. The distribution of power within the zone of the arc is controlled by repetitively changing the path of the arc. That is, one root of the arc may remain attached to the first electrode, whereas attachment of the other root is transferred between twor or more of the further electrodes on a repetitive basis. The timing and extent of each change may vary according to circumstances of use. The changes in arc path are due at least in part to repetitive modification of the influence of the power source on one or more of the further electrodes, but variation of the flow rate of gas/material (7, 9, 10) through the arc zone (6) can be another controlling factor.
Abstract:
5 A method of monitoring for contaminants in highly elongate textile product such as yarn includes diffusely applying light to the yarn and monitoring light reflected by the yarn. The yarn is drawn past a background therefor and light is diffusely applied to both the yarn and said background. The background is arranged so that the total amount of monitored light reflected from the yarn and the background is substantially independent of the dimensions and density of the yarn and of the distribution of constituents in the yarn. In this way, a prescribed change in the reflected light intensity indicates a selected contaminant or range of contaminants in the yarn. The background is conveniently provided by an elongate channel so as to be close behind and to each side of the yarn.
Abstract:
The activity of an arthropodicidal compound is increased by substituting at least one deuterium atom for a hydrogen atom attached to a carbon in the structure of the compound. Preferred compounds with arthropodicidal activity have the general formula (1) wherein A represents any group which in association with the remainder of the molecule gives arthropodicidal activity and which may contain a deuterium atom in place of any hydrogen atom which is attached to a carbon atom having four separate bonds; Y is O, S, CH 2 , or NH; R' is hydrogen or deuterium, R" is hydrogen, deuterium, -CH, -C≡CH or -C≡CD and R'" is hydrogen or fluorine; provided that the compound contains at least one deuterium atom. Compositions containing them and methods of using and making these compounds, and a deuterated alcohol starting material, are described.
Abstract:
A method for protecting synthetic and natural fibres against phototendering. The method comprises treating the fibres with a substituted benzotriazolesulfonate of the following formula: wherein (I) R 1 is hydrogen or halogen, R 2 is hydrogen or alkyl, R 3 is hydrogen or hydroxy, R 4 is -S0 3 X where X is hydrogen or an alkali metal, and R 5 is hydrogen, with the proviso that R 2 is not methyl when R 1 and R 3 are hydrogen: or (II) R 1 R 3 and R 4 are hydrogen, R 2 is -S0 3 X where X is hydrogen or an alkali metal, and R 5 is -OR 6 where R 6 is hydrogen or alkyl; or (III) R 1 is hydrogen or halogen, R 2 is -S0 3 X where X is hydrogen or an alkali metal, R 3 and R 5 are hydrogen, and R 4 is hydrogen, alkyl or benzyl; or (IV) R, is -SO 3 X where X is hydrogen or an alkali metal, R 2 is alkyl, R 3 and R s are hydrogen, and R 4 is hydrogen or alkyl; under acidic conditions. The method is particularly suitable for treating wool, silk and nylon fibres, including blends thereof.
Abstract:
The present invention discloses both a method and apparatus whereby the integrity of elongate magnetically permeable member(s) can be determined even if coated with a non-magnetic substance or embedded in a non-magnetic body. A magnetic yoke having field winding(s) and sensing winding(s) is used to induce a time varying magnetic field in the magnetically permeable member(s). Changes in the reluctance experienced by this magnetic field alter the output of the sensing winding(s). The invention finds particular application to testing conveyor belts, but is also applicable to steel cables, and both rubber and concrete bodies, including steel reinforcing.