Always see during winter time old lady with difficulty dragged through the snow their shopping carts with products, and wheel trucks get stuck in the snow.
I propose by analogy with the runners for baby carriages made of metal of area a small slider, and to them fastened a tin box that tightly would include truck wheel. Length of slider — 200 mm below the removed they were placed at the bottom of the cart bag.
Recommend to read
BELOW NAVIT SPRING
Using just two wooden bars, metal bars, vise and elastic steel wire, we can quickly produce the spring. Its length depends on the number of turns around the rod, operated by a bunch of...
LATEST JET FIGHTERS OF THE LUFTWAFFE
During the Second world war working on jet engines were in Germany on a broad front. They are ahead in this area all of the country and was able to convey in the production of two types...
