What is the name of the rope used in early elevators that continuously loops?

The rope used in early elevators that continuously loops is known as the bull rope. This type of rope is essential for elevator operation, as it provides the necessary support and tension to lift and lower the elevator car. The bull rope is typically designed to handle heavy loads and endure the repetitive strain from continuous movement, which is characteristic of early elevator systems.

In contrast, the other terms refer to different components of elevator systems. For instance, hoisting ropes are generally related to the mechanism that raises and lowers the elevator car but do not specifically denote the continuous looping feature. Guide ropes are used to keep the elevator car aligned within the shaft, and gripper ropes generally relate to the mechanism that secures the car in case of a malfunction. Thus, the bull rope distinctly represents the looping element crucial for the operation of early elevators.