Abstract: This invention provides a ferromagnetic material Fe.sub.60 M.sub.x N.sub.y where M is at least one element selected from Al, Ga, In and Tl, N is at least one element selected from P, As, Sb and Bi, x has a range of 1.ltoreq..times..ltoreq.39 and x+y=40 and excluding Fe.sub.60 Ga.sub.X AS.sub.y. A preferred ferromagnetic material is Fe.sub.60 Ga.sub.x As.sub.y , preferably when x has a range of 3.ltoreq..times..ltoreq.37, more preferably when x has a range of 20.ltoreq..times..ltoreq.37, and even more preferably when x has a range of 30.ltoreq..times..ltoreq.37. Typically, ferromagnetic materials of this type can be homogenised by annealing or melt spinning. Melt spun Fe.sub.60 Ga.sub.x As.sub.y can show Curie Temperatures (T.sub.c) of about 470.degree. C. and saturation magnestions of about 89 emu/g. Typically a ferromagentic material of the Fe.sub.60 M.sub.x N.sub.y has a B8.sub.2 type structure.

Abstract: A ferromagnetic material having the formula MGa.sub.2-x As.sub.x where 0.15.ltoreq.x.ltoreq.0.99 and M represents one of Fe.sub.3, Fe.sub.3 partially substituted by manganese or Fe.sub.3 partially substituted by cobalt.

Abstract: A non-sintered permanent magnet is formed by a cold compacting technique or by resin bonding using particles of a stoichiometric alloy (e.g. R.sub.2 Fe.sub.14 B where R is at least one rare earth and/or yttrium, particularly La, Ce, Pr, ND or Y or a mixture thereof) which have been coated with a reaction product of the alloy or a non-magnetic metal such as Sn, Ga, Zn, Al, or Cu. The use of a stoichiometric alloy avoids the presence of a reactive grain boundary phase normally present in non-stoichiometric alloys.

Abstract: A device for feeding workstock to a saw blade. The device includes a friction drive adapted to engage a surface of the workstock to propel the same. The drive is mounted for a range of movement in a direction to accommodate workstock with varying dimensions. A gas spring holds the drive in any selected position within the range of movement and resiliently biases the same against movement away from that position. The gas spring includes a valve system which is operable at least to reduce the bias to facilitate selected adjustment of the drive and closable to hold the drive in a substantially fixed orientation throughout the range of movement.

Abstract: A hydrogen storage material for releasably storing hydrogen having a microstructure containing an alloy phase of the general formula R.sub.2 Fe.sub.17, wherein R is cerium and lanthanum and, optionally, at least one other rare earth element, and wherein a microstructure also contains from about 2 to 35% by weight, based on the total weight of all phases, of a eutectic of the formula R'/R'Fe.sub.2, wherein R' is lanthanum-starved R; the alloy phase of the general formula R.sub.2 Fe.sub.17 being present in an amount of not less than 40% by weight of the material, and the material contains less than 60% by weight of cerium based on the total amount of cerium, lanthanum and, if present, at least one other rare earth element. A method for producing such material by heat treating in an inert atmosphere so as to homogenize same and to increase the proportion of alloy phase in the material is also described.

Abstract: A device is provided to propel workstock to saw blades or other power tools and especially circular saws. The propulsion is effected by a friction drive preferably in the form of a pair of parallel belts engaging a surface of the workstock. The device is mounted for ready vertical adjustment at the will of the operator via a parallel linkage system which is held in any selected position by a gas spring that also provides a resilient bias to produce the necessary pressure for the friction drive. The device is additionally arranged for lateral adjustment.