maundril

English

Etymology

Compare mandrel.

Noun

maundril (plural maundrils)

1. (historical, mining) A pick with two prongs, used for prying.
   • 1865, Hilary Bauerman, A Descriptive Catalogue of the Geological, Mining, and Metallurgical Models in the Museum of Practical Geology, page 27:

     The cutting maundrils taper directly from the centre to the points, the holing maundrils are somewhat stronger and bluffer.

2. Alternative form of mandrel
   1. (round object for shaping material)
      • 1836, John Turton, The angler's manual; or, fly-fisher's oracle, page 1:

        They must be fitted with lined or double hoops, drawn on maundrils to fit quite tight; the bottom pieces being bored at the joint, and a peg left at the end of the part above to fill it up, so that when put together, all the wood being there, the joint will be as firm as any part of the rod: besides, the wood cannot swell when wet, and can easily be taken to pieces.

      • 1859, Thomas Fairbairn, William Andrew Fairbairn, George Fairbairn, “Improvements in the mode or method of casting ordnance, &c.”, in Abridgments of the Specifications Relating to Fire-arms and Other Weapons, Ammunition, and Accoutrements, page 236:

        Hollow maundrils of metal are used instead of cores to form the internal surfaces of chambers of guns. The maundrils are to be formed accurately to the shape of the surfaces required for the castings, so that subsequent turning and boring may be dispensed with.

   2. (tool or component that guides, grips, or clamps)
      • 1853, McConnell, “On Hollow Railway Axles”, in The London journal of arts and sciences, page 365:

        The whole cylinder is then placed in the furnace, and brought to a proper welding heat; it is next passed through a series of grooved rollers, the grooves of which are furnished with a maundril, or an egg form, attached to, and supported on, the end of a fixed bar, firmly secured at the opposite end, to resist the end pressure or strain during the process of rolling. The maundrils are made of cast-iron, chilled, and are socketted on the end of the bar, and secured by a screw-nut, so that they may be easily removed, when required.

      • 1857 May 1, “Barber's Machinery for Mill and Other Engraving Rollers”, in The Engineer, volume 3, page 347:

        The increased facility for dividing and punching the pitch pins on the rollers for engraving by mill and other machines, and in setting out for hand and other engraving, is obtained by an improved method of securing the roller to the maundril. Instead of the usual box maundril made in segments or wedges and coned inside to fit the inside circle of the roller, the roller is fastened on the maundril by a bell chuck or chucks, formed so as to grip the whole outside coated circle of the roller, the chuck being coned inside to receive rollers of different sizes, one of the chucks either forming part of the maundril or not, as required.