A patent for a Mechanical Bola was patented on September 23, 1952, by B.D. Manning with the purpose of helping a single person rope and manage cattle. The drawing reminds me of the early modified Texas hunting jeeps like this one.
“A peculiar trait of such cattle is their curiosity with respect to motor vehicles. They soon become accustomed to jeeps, for example, and will come up to examine one, particularly if the motor is running. One can drive right up to a bunch of cattle in a jeep, without any of them taking the trouble to move, so long as the driverstays in the car.
With the device of my invention attached to aj eep or other auto vehicle, it is a simple matter to capture a single animal without waste of time, or if it becomes necessary to inspect or treat a large number of cattle for Screw-Worm or other disease, this may be done expeditiously, for if the rest runoff at the casting of one animal curiosity brings them back shortly if the driver moves his vehicle about a bit.”
