These are used in groups of four. Each one is fastened to a long, insulated large flexible wire. Using a long insulated pole (8-25’). After the 3 phase power is shut off and tagged out, three of these clamps are fastened to the 3 wires. The forth clamp is put on a ground wire.
1068. Haven't been able to verify any of the guesses:
1. Piston ring placer
2. Bearing puller
3. Pipe fitting tool
4. Large molly bolt
5. Wire spool support
6. Thread cleaner for screw breech artillery
7. Camera tripod
8. For extracting a circular piece that has been pushed in a conical hole
1069. Probably a wine thief: the dowel fits into the end of the plug, the device is then placed into a barrel of wine, the plug is pulled, drawing a sample into the shaft, the marble acts as a one way valve, letting liquid in but not letting it back out.
The cuts on the end allow it to work while resting on the bottom of the barrel.
1070. Schweitzer and Conrad Inc. high power fuse puller, probably from the early 1900's:
1071. Timber scribe, also called a marking iron, race knife, or timber groover; cuts an identification mark in the end of a plank or log.
1072. Fish scaler
An update on a device posted a couple weeks ago, a reader of this site found the patent for it:
1055. Vibration meter, patented in 1928, number 1,687,507; from the patent:
One application of my invention is to the determination of the vibrations to which incandescent lamps and similar devices are subjected.
Last week's set is seen below, click here to view the entire post:
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.