Pantograph engraving machine and parts

Made:
1865 in London
maker:
Bryan Donkin and Company

Pantograph engraving, milling machine and accompanying parts, 1865, associated with geometric lathe by Bryan Donkin and Co., c.1821.

This machine was was constructed by Bryan Donkin and Co. in 1865, and its main purpose was to mill the bronze blocks which ultimately formed the interlocking compound security printing plates which were engraved with complex mathematical patterns by Donkin's 1821 geometric lathe (inv. 2008-26). Initially, the bronze blocks were cast bronze, but a better and more accurate fit between the two could be reached if they were milled instead. This machine was adapted from a planing machine previously used by Donkin in the construction of papermaking machinery. Thereafter, both machines, the lathe and pantograph, worked until the 1950s in conditions of closely-guarded secrecy

Details

Category:
Hand and Machine Tools
Object Number:
2008-27
Materials:
wrought iron, cast iron, gunmetal, steel (metal) and paint
type:
pantograph
credit:
Bryan Donkin Archive Trust

Parts

Spare arm for holding workpiece on pantograph

Spare arm for holding workpiece on pantograph

Object Number:
2008-27/10
type:
pantograph component
Bag of metal borders for dies

Bag of metal borders for dies

Materials:
metal (unknown)
Object Number:
2008-27/15
type:
dies
Template, pierced pattern for bottom plate

Template, pierced pattern for bottom plate

Materials:
metal (unknown)
Object Number:
2008-27/20
type:
templates
Template, with pattern for bottom plate

Template, with pattern for bottom plate

Materials:
metal (unknown)
Object Number:
2008-27/21
type:
templates
Interlocking shapes for template die base

Interlocking shapes for template die base

Materials:
metal (unknown)
Object Number:
2008-27/27
type:
templates
Wooden lettering on irregular board –IGH- ANNAS

Wooden lettering on irregular board –IGH- ANNAS

Materials:
wood (unidentified)
Object Number:
2008-27/28
type:
templates
Wooden lettering –R-E RUP--- --GT –NNAS

Wooden lettering –R-E RUP--- --GT –NNAS

Materials:
wood (unidentified)
Object Number:
2008-27/29
type:
templates
Two templates for script, on irregular board

Two templates for script, on irregular board

Object Number:
2008-27/30
type:
templates
Assorted templates for scripts

Assorted templates for scripts

Object Number:
2008-27/35
type:
templates
Box of rings, borders and parts

Box of rings, borders and parts

Object Number:
2008-27/36
type:
pantograph parts
Interlocking pair of oval metal templates

Interlocking pair of oval metal templates

Materials:
metal (unknown)
Object Number:
2008-27/37
type:
templates
Interlocking pair of oval metal templates

Interlocking pair of oval metal templates

Materials:
metal (unknown)
Object Number:
2008-27/38
type:
templates
Metal stamp ‘The address only to be written on this side’

Metal stamp ‘The address only to be written on this side’

Materials:
metal (unknown)
Object Number:
2008-27/39
type:
stamp
Jig with cut out patterns of die top plate

Jig with cut out patterns of die top plate

Materials:
metal (unknown)
Object Number:
2008-27/41
type:
jig - tool