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Double Trip Mechanism

Environmental Monitoring & Research Equipment

(305) 621-2882

[email protected]

Double Trip Mechanism

For opening and closing nets on messenger command at any depth. This mechanism is to be used as part of a complete plankton net, with a choker band and line for attachment to double-trip mechanism, snapper block, plus an endless loop sewn to cod end (sold separately).

1000DT includes the following
  • 2 (1000MG) messengers
  • 1 wire stop.
Weight 13.00 lbs
SKU 1000DT
Price: $1852.00
Quantity

A unique mechanical device with two pivoting release levers individually opened by successive GO Devil messengers (1000-MG) dropped down the cable from the surface. Used for a variety of functions such as opening and closure of plankton nets (see data sheet 5100-12/85), water samplers, and mid-water trawls. Conveniently releases multiple ballast and flotation packages. Bronze and stainless steel construction provide for long, reliable service in seawater.

Operation:

Attaches to cable by two quick-release pins which hold the unit loosely astraddle a cylindrical cable stop (M odel1 OOO-WS),allowing the double-trip mechanism to swivel freely about the cable. Initial GO Devil messenger (A) opens upper latch release lever; second messenger (B) disengages the lower lever. Two-step release pin enables successive drop of two messengers (A 1and B1) below the unit for serial operation of several devices along the cable. A clearance hole provides for shackle connection of a third line for retrieval. Price includes 2 messengers and 1 wire stop.

Double Trip Operating Instructions

Specifications:

  • Weight: 3.5 kgs (7% Ibs)
  • Materials: Bronze body, trip fork. Stainless steel levered reset knob, release levers, release pins, main drive shaft and internal hardware.
  • Dimensions: Approximately 22.8 cm (9") by 14 cm (5") by 2.5 cm (1").
  • Depth Rating: Unlimited.
  • Load Rating: 50 kgs (110 Ibs) per release point, 100 kgs (220 Ibs) total. Greater loads may be released by using extra heavy messenger clusters for each trip.
  • Mounting: Quick-release pins for straddle mount over cable stop on cable sizes up to 9.6 mm (3/8") diameter. Extra cable stops beneath the unit are used with heavy loads.

A unique mechanical device with two pivoting release levers individually opened by successive GO Devil messengers (1000-MG) dropped down the cable from the surface. Used for a variety of functions such as opening and closure of plankton nets (see data sheet 5100-12/85), water samplers, and mid-water trawls. Conveniently releases multiple ballast and flotation packages. Bronze and stainless steel construction provide for long, reliable service in seawater.

Operation:

Attaches to cable by two quick-release pins which hold the unit loosely astraddle a cylindrical cable stop (M odel1 OOO-WS),allowing the double-trip mechanism to swivel freely about the cable. Initial GO Devil messenger (A) opens upper latch release lever; second messenger (B) disengages the lower lever. Two-step release pin enables successive drop of two messengers (A 1and B1) below the unit for serial operation of several devices along the cable. A clearance hole provides for shackle connection of a third line for retrieval. Price includes 2 messengers and 1 wire stop See diagrams.

Specifications:

  • Weight: 3.5 kgs (7% Ibs)
  • Materials: Bronze body, trip fork. Stainless steel levered reset knob, release levers, release pins, main drive shaft and internal hardware.
  • Dimensions: Approximately 22.8 cm (9") by 14 cm (5") by 2.5 cm (1").
  • Depth Rating: Unlimited.
  • Load Rating: 50 kgs (110 Ibs) per release point, 100 kgs (220 Ibs) total. Greater loads may be released by using extra heavy messenger clusters for each trip.
  • Mounting: Quick-release pins for straddle mount over cable stop on cable sizes up to 9.6 mm (3/8") diameter. Extra cable stops beneath the unit are used with heavy loads.

1000DT


1000DT.pdf

Choker Band And Line, 30 To 5Ocm

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