On the guns I mentioned on which the top lever returns to center when opened I simply assumed that everyone would realize that if the gun had an automatic safety it would be necessary to push it OFF safe. You then pull the triggers just enough to clear the sears & release them as the gun closes the hammers drop, the top lever is cammed over to the right re-setting the safety
& when it closes the lever snaps back to center bolting the gun, no device necessary to trip the lever. What Patriot describes works virtually the same except you do have to have some object to stick inside the rib cut in the frame to release the trip. On a Lefever with the 3-position safety you just pull the triggers & close the gun, nothing else required, I have done all of the above for years. (Never Owned an Uggie so can't speak for them). I had a 20ga Ithaca Flues once that if you were real careful you could release the bolts just a hair before the latch caught the lever so it would return to center without tooling allowing the hammers to be eased down.