In the early 70's Yankee Mechanic's Inc. of Newport, N.H. a subsidiary of Sturm & Ruger Company Inc. produced two models of the Winch-Hoist as noted on the spec sheet below. An application for TM was filed on August 20, 1971 and a TM image was filed on March 9, 1972. The image was a Red Clydesdale Horse super-imposed on a Winch-Hoist. I do not know how long or how many were made, but they all had serial numbers.
I have only seen three different pictures and one of those is in the forum classified's right now. The first picture is a complete unit in excellent condition.
This picture is one that was for sale on ebay a few years ago and up until now was the only one I had a chance to bid on.
I was watching it on ebay with two days left and planned to put a hefty bid on it in the last 30 seconds. Long story short I forgot the time and checked it one hour late,
it sold for $487.00 as I remember. 
