Posted 9 years ago
tdflyer
(1 item)
Thanks for looking! I'm not sure what I got here. I do know my father purchased this at auction over 35 yrs ago, but never discussed with him. I just remember him coming home with it. Didn't know it was still around, until this weekend, I came across it cleaning out my mothers house.
It's made of solid brass, weighs over 40lbs and has several different sized diameter nozzels that thread into the "nose". The nose opens up, exposing a hollow cavity. The tail stamp begins with "US D" follow by what I'd expect to be serial number. It's packaged in a strong wooden box which is obviously made for it.
My thinking is it may be some sort of speed or pressure sensing device to be used underwater, just because of the different diameter nozzles. But, really I have no idea.
If anyone can help me determine what I got, or possibly where to go to find more info, I'd be very grateful.
Thanks,
Tim
tschwer@hunyady.com
Here ya go....D-74 replaces D-49. Sediment sampler.
Depth-Integrating Reel Type, US D-74 and US D-74AL
This is a 64-pound (28 kg) sampler for suspension by cable, reel, and crane to take suspended-sediment samples in streams up to 18 feet (5.5 meters) in depth. The sampler has a cast bronze streamlined body 24 inches (61 cm) long, in which a pint or quart (0.47 or 0.95-liter) sample container is enclosed. These samplers also can be cast in aluminum instead of bronze. In this case, the sampler weighs 30 pounds (13.6 kg), and is designated as the US D-74AL. The sampling operation is identical to that of the DH-48.
The instrument is suspended on a hanger bar attached to a stainless steel cable and is lowered and raised by means of a sounding reel mounted on a crane, cable car or boat. Each nozzle is calibrated and supplied in 1/4 inch (0.64 cm), 3/16 inch (0.48 cm) and 1/8 inch (0.32 cm) green color coded nylon sizes. Shipment is made in a hinged, wooden box suitable for storing and transporting. The samplers can be supplied with a special epoxy coating. The US D-74 replaces the old model US D-49. The primary difference was the enlarging of the cavity for the sample container allowing the sampler to use the quart container or pint with adapter sleeve.