Mould Core and Mantle for Casting the Horse; Number Table
Four mounted fragments: iron armature for a bronze mould, mechanisms, and a place-value table
Four fragments are mounted together: an ink-and-wash drawing on a blue-tinted sheet and three red-chalk or ink mechanical sketches, plus a small numeric table. The transcribed notes concern casting: iron bars and bolts held fixed in the mould core, and half-circles fastened into the mantle so they can be drawn from the bronze once the horse is shown. A short columnar table pairs three-figure numbers with their tenfold values, and the sketches show roller-, bar- and belt-driven mechanisms.
On this page
Iron armature in the mould core and mantle (a, c, b, d)
The irons a c b d and their bolts are to stay fixed in the core; when the horse is shown, the bolts, which are thinner on one side, are drawn out. Half-circles are then set into the mantle and fastened with sunken bolts so that they may afterwards be pulled easily from the bronze, these circles and bolts being made thick.
Analogous figure of the fixed iron (a, b; e, d, c, l, i, o, m, K, n, h, g, f)
A companion diagram carries the letter groups e d c, l i o, b a, m K n and h g f. The note states simply that the iron a b will be the one that stays fixed.
Place-value number table
A short columnar table pairs three-figure numbers with their tenfold values: 003 with 300, 004 with 400, and so on up to 009 with 900, then 1000, 1100 and 1200 (written in reversed form as 0001, 0011, 0021). It sets out a scale of decimal place value.
Mounted mechanical sketches
The mounted fragments carry red-chalk and ink sketches of mechanisms built from rollers, bars and belt- or band-driven wheels, with a row of small elements along the top of the blue-tinted sheet. No transcribed text describes these particular drawings.