For opening tins
A tin can opener.
The can opener.
A tin-opener.
With a tin opener?
The primary function of the can opener is to open tin cans. Though the first tin can have been in use since 1772 in The Netherlands, the first tin can was patented in 1855, though earlier un-patented models may have invented.
It is not possible.
Fulcrum I think.
In a tin opener, the fulcrum is typically located at the pivot point where the lever arm of the can opener meets the body or handle. This pivot allows the lever to rotate, enabling the cutting wheel to puncture and cut through the metal lid of the tin can. By applying force on the handle, the user creates leverage around this fulcrum to open the can efficiently.
The tin can opener was invented in 1858. This was necessary after the invention of the tin can 48 years earlier, in 1810.
Well, I'd call them a tab collecter.
with a can opener
A tin opener can be considered a force multiplier in the context of its ability to enhance human effort when opening cans. It increases efficiency and reduces the physical exertion required compared to using bare hands or other tools. By providing leverage and a mechanical advantage, a tin opener allows individuals to open cans more easily and quickly, thus amplifying their productivity in the kitchen.