tools and parts to maintain submarine telegraph equipment
date: label: date made
content: ca 1920
notes: label: Description (Brief)
content: An assortment of tools and parts used to maintain submarine telegraph equipment. Items tagged as 283729.05.xx as follows:
label: Description (Brief)
content: .01: "Spirit lamp" - glass; brass; cotton - a small oil lamp with glass reservoir, brass collar, cotton wick. No extant maker's marks.
label: Description (Brief)
content: .02: Two pieces of wax - wax - 1" x 2.25" x 1"; 1" x 1.5" x 1.25" - two irregularly shaped pieces of wax, purpose unknown. No extant maker's marks.
label: Description (Brief)
content: .03: "Shunts for direct writer coil" (written on envelope) - metal; plastic - (3 each) 3.75" x .25" dia; (1 each with bent leads) 3.5" x 7/32" dia - a set of 4 resistors that appear mid-20th century in make. Color coded bands are different on each.
label: Description (Brief)
content: .04: "Direct writer siphons" (written on box) - a box of 16 bent glass tubes (2 bends) shaped to fit a siphon recorder, no extant maker's mark, box is not original.
label: Description (Brief)
content: .05: "Recorder siphons" (written on box) - a box of 46 bent glass tubes (3 bends) shaped to fit a siphon recorder, no extant maker's mark, box is not original.
label: Description (Brief)
content: .06: copper brushes - 1.625 x .125 x .05 (on average) - One full box (100), one partial box (29), and about 200 loose braided copper strips used as brushed for motor armatures. Full box is stamped: "100 / 10384 Brush" and written "CXR". Partial box is labeled "Dou 100 Ble / 9295 [crossed thru] Brush". Lengths vary slightly.
label: Description (Brief)
content: .07: "Almag" wire on spool - aluminum-magnesium? - wire: .0013" x 100 meters[?]; spool: .75" x 3.5" dia. - An aluminum spool wrapped with thin wire. Tag attached to spool reads: "Oscillograph / string / suspension + / Spare wire". Spool is marked: "ALMAG .0013" .45mg/200[?] 10/20/44" and "3406 / 32 / 5". This does not appear to be a full spool so the length of the remaining wire is unknown.
label: Description (Brief)
content: .08 - copper wire on mandrel - mandrel: 1.75" x 1.25" dia; wire: thin - A hard rubber mandrel wound with thin copper wire. No extant markings.
label: Description (Brief)
content: .09 - A plastic eye dropper with rubber bulb. Presumed used to refill ink trays in submarine telegraph recorders.
label: Description (Brief)
content: .10 - copper spatula - A 1/8" copper rod formed into a spatula for use in repairing submarine telegraph recorders. One end is made into a loop as a handle, the other end is flattened. No extant maker's markings.
label: Description (Brief)
content: .11 - connecting screws - brass; copper - A set of 12 copper connecting screws with steel tips and textured knobs. No extant maker's markings.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Western Union International
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.283729.05
label: accession number
content: 283729
label: catalog number
content: 283729.05
objectType: label: Object Name
content: submarine telegraph components
physicalDescription: label: Measurements
content: .01: spirit lamp: 3 1/2 in x 2 1/2 in; 8.89 cm x 6.35 cm
label: Measurements
content: .02: wax (approximate): 1 in x 2 in x 1 in; 2.54 cm x 5.08 cm x 2.54 cm
label: Measurements
content: .03: shunts: 3 3/4 in x 1/4 in; 9.525 cm x .635 cm
label: Measurements
content: .04: direct writer siphons (each): 1 1/2 in x in x 2 1/4 in; 3.81 cm x .0254 cm x 5.715 cm
label: Measurements
content: .05: recorder siphons (each): 1 1/8 in x in x 2 5/8 in; 2.8575 cm x .0254 cm x 6.6675 cm
label: Measurements
content: .06: brushes (each): 1 5/8 in x 1/8 in x 1/16 in; 4.1275 cm x .3175 cm x .127 cm
label: Measurements
content: .07: almag wire (spool): 3/4 in x 3 1/2 in; 1.905 cm x 8.89 cm
label: Measurements
content: .08: copper wire (mandrel): 1 3/4 in x 1 1/4 in; 4.445 cm x 3.175 cm
label: Measurements
content: .09: eye dropper: 3 5/8 in x 1/2 in; 9.2075 cm x 1.27 cm
label: Measurements
content: .10: spatula: 4 7/8 in x 1 in x 1/8 in; 12.3825 cm x 2.54 cm x .3175 cm
label: Measurements
content: .11: connecting screws (each): 1 1/8 in x 1/2 in; 2.8575 cm x 1.27 cm