Accession No

6269

Brief Description

5 organ pipes by Yeates & Son, Dublin (not an original set).<br />Second half of 19th century.

Origin

Dublin; Ireland

Maker

Yeates & Son.

Class

sound

Earliest Date

1865

Latest Date

1900

Inscription Date

Material

Wood (mahogany; other); glass; metal (brass; paint.

Dimensions

6269.1 length 295mm, width 57mm, depth 56mm. 6269.2 length 310mm, width 65mm, depth 65mm. 6269.3 length 320mm, width 45mm, depth 49mm. 6269.4 length 505mm, width 67mm, depth 52mm. 6269.5 length 720mm, width 130mm, depth 75mm.

Special Collection

Provenance

Purchased from Trevor Philip and Sons, 75a Jermyn St, London on 21/05/2009.

Inscription

Yeates & Son
Opticians
Dublin

Description Notes

5 organ pipes by Yeates & Son, Dublin (not originally part of a set).

6269.1 Organ pipe with glass viewing window showing reed inside. Crack to one of the panes of glass. Top section with reed removable.
6269.2 Square-section tapering organ pipe.
6269.3 Organ pipe with manometric flame capsule. Stamped “C4” on front.
6269.4 Organ pipe with manometric flame capsule with tuning slide. Stamped “E3” on front.
6269.5 Organ pipe with 3 manometric flame capsules attached to gas pipe. Glass viewing window.

Good/Fair – Some wear to the wood, but all components present. One crack in one of the small panes of glass (6269.1).

References

Events

Description
These organ pipes would be used to provide pure sounds which could be made visual using a manometric flame apparatus. A rubber diaphragm turns the standing wave in the pipe into a modulating air supply which in turn makes a flame vibrate at the frequency of the sound. By using two pipes at once, the relative frequencies of the two sounds can be compared. The largest pipe has three outputs and can be used to show the relative strength of the standing wave at different points along the pipe.
15/06/2009
Created by: Derek Scurll on 15/06/2009

FM:46752