Abstract: A method of and apparatus for handling a band saw for the purposes of effecting manufacturing and/or repair operations upon the band saw characterized by, during such manufacturing and/or repair operations upon the band saw (5), supporting the band saw in such manner that the weight of the band saw (5) is not carried by an edge of the band saw (5). The support includes rotatable supports (24, 25) for supporting the band saw; the rotatable supports being positionally adjustable to accommodate differing band saw lengths; and in that adjustments are provided for enabling the rotatable supports to be displaced to advance the band saw to a machining station (22) for defining a working station/position at which a manufacturing and/or repair operation can be effected.

Abstract: Apparatus for securing hard material tips to the teeth of a cutter tool includes a carrier unit for presenting an end of a rod of the tip forming material to a tooth to be tipped, a spring for exerting pressure between the tip forming material and the tooth to be tipped during a welding operation such that the end can be welded to the tooth with the tip forming length positioned with respect to the tooth at substantially the rake angle for the tip. Following the welding operation the rod or bar is severed from the end thereof attached to the blade tooth in such manner that the cut surface defines the top face of the tip.The carrier unit brings the lower end of the bar into contact with the tooth that is located at the welding station to hold the lower end in place during the welding operation.

Abstract: There is provided a length of material from which may be cut tips for use with tools involving tips of material that is harder than that of the remainder of a tool, wherein said length of material is so preformed as to present at least one axially extending planar surface (17-25) which when a tip forming length (9) is cut therefrom and the tip forming length is mounted to a tool (4), lies substantially at the required operational angle for one of the faces of the tip that is to be involved with the cutting action thereof.

Abstract: To gain access to the cutting edge of a saw tooth in the direction of both the back and the front face of a tooth in a single grinding process, the grinding tools (27,37) are adjustable in relation to both their respective pivoted arms (2,3) and with them relative to the machine frame (11,12). Only the primary pivoted arm (2) is driven up and down by a drive (43), pivoting the secondary arm (3) with it by a drive joint (6). Because the pivot axes of pivoted arms (2,3) are not parallel, a universal coupling (6) must be used. This drive joint (6) is offset relative to the pivot axles (32) upwardly from the saw-blade guide (13) in the plane (14) of the saw-blade. Thereby with an otherwise identical device wide or larger-diameter saw blades can be ground.