Abstract: In an assembly for use in fastening a railway rail to an underlying rail foundation, a resilient railway rail fastening clip (1, 2,3) has at least one portion (1a) which when in use bears on, and extends substantially parallel to, a flange (301) of an adjacent railway rail (300), and retains an insulator (13, 13') for electrically insulating the clip (1, 2, 3) from the rail (300) when in use. The insulator (13) is held in engagement with the clip (1, 2, 3), which has a rail bearing portion of substantially circular cross-section, such that it can rotate about the longitudinal axis of the said rail bearing portion (1a). Unlike the prior art the insulator is self-aligning on the rail flange (301) when the rail (300) moves. One insulator (13, 13') disclosed has at least two load bearing surfaces (13a), such that it may be rotated so as to present an unworn load bearing surface (13a) to the rail flange (301).

Abstract: A system for employing a computer to control a device to provide a plurality of services for a plurality of entities. Each entity corresponds to exactly one of the services and each service has its own copy of the code which defines the service. The system associates a process which executes the service with each service. The code for a service defines a finite state machine which is continually executed by the service's process. While in a given state, the finite state machine may traverse a decision graph which is directly accessible to the process. Actions to be taken on traversal of a node of the decision graph may be defined in the finite state machine. The service's process communicates with other processes and with itself by means of interprocess messages. Each state of the finite state machine contains event handlers for responding to messages received by the service's process.

Abstract: A process for producing a thermoformable acrylic sheet comprising polymerizing an acrylic monomer in the presence of 0.02 - 3.0% by weight of a cross-linking agent, the reaction conditions being such that the fully polymerized sheet would have a reduced viscosity of 1.5 - 4.0 if cross-linking agent were absent.

Abstract: An overload warning device for use in a crane having a telescopic jib which includes, in a transmission between a slave jib and a pointer, a bank of cams each appropriate for a different length of jib, a common follower cooperable with the cams, and a selector mechanism operable automatically in response to change in the jib length for effecting relative movement between the follower and the cams to bring the follower into cooperation with the cam corresponding to the newly selected jib length.

Abstract: The invention discloses a novel damp proof composition, suitable for making into sheets for roofing purposes, comprising (a) from 5 to 40% of a polychloroprene rubber, (b) pitch in an amount of up to 45%, and (c) at least 5% of a filler. The filler may be particulate or fibrous, and the composition may further include a supplementary polymer, for instance a nitrile rubber.

Abstract: Finely divided micro-particles of tyrosine having a glutaraldehyde-treated allergen dispersed therein are prepared by mixing a solution of tyrosine in a strong aqueous acid with a solution of glutaraldehyde-treated ragweed pollen extract as the allergen and then neutralizing the resultant solution.

Abstract: A portion of a beam of light directed towards a flow of particulate material is interrupted with an edge such that the edge casts a shadow across the material. The shadow profile is sensed and a signal indicative of the sensed shadow profile is derived and monitored as a function of flow velocity to determine the volume of flow.

Abstract: Antibacterial 3-carbamoylbenzyl cephems and 3-(carbamoylpyridylmethyl) cephems, pharmaceutically acceptable salts and in vivo hydrolyzable esters thereof; pharmaceutical compositions containing antibacterially effective amounts of such cephems and intermediates therefor. Minimum inhibitory concentrations against various bacteria are given. The cephems and compositions containing the same are suitable for administration in conventional forms to humans.

Abstract: Cephalosporin analogues of the formula (I): ##SPC1##and their salts and in-vivo hydrolysable esters (wherein R is an acyl group as found in known antibacterially active penicillins and cephalosporins and R.sub.1 is a hydrogen atom or a carboxylic acid group) are useful antibacterial agents.

Abstract: This specification discloses an ice accretion detector for aircraft comprising a sensing hole or port formed in part of the aircraft structure where icing is known to occur and connected to the key control port of a OR/NOR fluidic key and an air supply supplying air under pressure to the supply port of the key while a pneumatic indicator is connected to the output port of the key. When the sensing hole is closed by the formation of ice the fluidic key is switched into its other state and the pneumatic indicator senses this change and indicates the formation of ice.

Abstract: A curable composition comprising (a) a resin containing free hydroxyl groups which is obtained by the reaction of a compound of formula R'(CH.sub. 2 X).sub.a, wherein R' is a divalent or trivalent aromatic hydrocarbon or a di(aromatic hydrocarbon) ether, X is an alkoxy group of 1 to 6 carbon atoms or is chlorine, bromine or iodine and a is 2 or 3, with a phenolic compound, (b) a cycloaliphatic epoxy compound containing at least two 1,2 - epoxide groups per molecule and (c) an amino compound selected from the group consisting of imidazoles, N-substituted imidazoles, triethylene diamine, and benzimidazoles.

Abstract: A compounded perfumery composition comprising component A and component B, component B being from 0.1 to 95% by weight based on the weight of said compounded perfumery composition. Component B comprises at least one compound of the formula wherein R is at least one group selected from methyl, ethyl, propyl, iso-propyl, n-butyl, sec-butyl, tert-butyl, pentyl or hexyl.

Abstract: Sterilising composition comprising a chemical reactive compound with a perfumery alcohol or phenol such as bleaching, scouring, chemical cleansing and sanitary sterilising, e.g. mobile toilet, compositions are perfumed by the incorporation therein of one or more monomeric or oligomeric titanium or zirconium esters of a perfumery alcohol or phenol. Preferred esters are monomeric titanate esters of formula Ti(OR).sub.4 where R is the residue of a perfumery alcohol or phenol. Said oligomers are prepared by hydrolysis of a monomeric titanate or zirconate ester with from 50 to 90 moles water per 100 moles monomeric ester. Said sterilising compositions provide controlled release of perfume by hydrolysis of said esters during use and exhibit reduced degradation of said perfumery alcohol or phenol during storage.