Bliss patent log. "Taffrail log" brass rotator with 4 vanes in 9 1/2" long

Made:
1880-1911 in New York state
patentee:
Bliss, John

Bliss patent log. "Taffrail log" brass rotator with 4 vanes in 9 1/2" long, one vane engraved "John Bliss and Co." and dates of patent (78,84,85,USA, 85 English). Recording portion for securing to taffrail of ships, brass hook and pin and metal key for bending slitted portion of two vanes

Details

Category:
Navigation
Object Number:
1911-222
type:
log (record)
credit:
Admiralty Hydrographic Department

Parts

Bliss patent register

Bliss patent register

Brass register with enamel dial face for Bliss Taffrail log, by John Bliss, New York, America, c. 1886

Measurements:
overall: 373 mm x 75 mm x 52 mm, 1.11kg
Materials:
brass (copper, zinc alloy) , enamel and paint
Object Number:
1911-222/1
type:
log (record)
Image ©
The Board of Trustees of the Science Museum
Bliss patent log

Bliss patent log

Brass log with four blades for Bliss Taffrail log, by John Bliss, New York, America, c. 1886

Measurements:
overall: 242 mm 105 mm, .515kg
Materials:
brass (copper, zinc alloy) and steel (metal)
Object Number:
1911-222/2
type:
log (record)
Image ©
The Board of Trustees of the Science Museum
Blade former and wrench

Blade former and wrench

Metal blade former and wrench used to make adjustments on recorder, by John Bliss, New York, America, c. 1886

Materials:
metal (unknown) and paint
Object Number:
1911-222/3
type:
log (record)
Image ©
The Board of Trustees of the Science Museum

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