Judges 16:14

And she fastened it with the pin ... - The meaning of the verses seems to be that the seven long plaits, in which Samson’s hair was arranged, were to be woven as a woof into the threads of a warp which stood prepared on a loom in the chamber, which loom Delilah fastened down with a pin, so as to keep it firm and immoveable. But Samson, when he awoke, tore up the pin from its socket, and went away with the loom and the pin fastened to his hair.

The beam - Rather, the “loom,” or “frame.” The beam is the wooden revolving cylinder, on which the cloth is rolled as fast as it is woven, the Hebrew word for which 1Sa 17:7; 1 Chronicles 11:23; 1 Chronicles 20:5 is quite different from that here used.