Object Title

3.25 in mortar

3.25 in mortar



Object Number



Old Tower Collection

Physical Description

Of small size. They are cast with a square collar towards the base of the chase (cf. No.124). The trunnions are placed at the base of the breech in the usual manner but the vent has been positioned on the side showing that the mortar was mounted with the trunnions in a vertical plane. The lower flat of the square collar is cast with a secondary trunnion or peg. At some period in the mortars' working lives the original vents have been plugged and new vents drilled in the upper trunnion, this trunnion being shorter than the lower, possibly so made originally. The mortars were both damaged in the Grand Storehouse fire of 1841 and on XIX.282 the lower trunnion and peg are missing


Dimensions: Length: 9.5 in (24.1 cm) Weight: 27 lb (12.2 kg)


Serial Number None visible


3.25 in (8.25 cm)


Places England

Bibliographic References

H.L.Blackmore, The Armouries of the Tower of London, Ordnance Catalogue, H.M.S.O. London 1976, P.96.


Both mortars, which were probably made for experimental purposes, formed part of a specially mounted display or trophy of relics of the 1841 Fire (XVIII.76). They may be the remains of the thirty 'Brass Mortar-pieces, 3.25 (inches diameter) on a frame and carriage' which appear in the 1713 Inventory (App.1). This same battery of mortars was described in 1708 as 'An Engine of small Mortars which shoots 30 shells at a time' (E.H. Hatton, 'A New View of London (London, 1708),636). The 1750 Guide refers to them as 'A destroying Engine that throws 30 Hand-granadoes at once, and is fired by a Train.