Adjustable Weight Hammer

They sometimes say, "If at first you don't succeed, get a bigger hammer." However, that can be inconvenient, prying yourself from whatever tight location you might be in, just so you can crawl out and find that bigger hammer, and then crawl back into that tight spot, to use it.

This hammer is mostly hollow. Both the head and the handle are hollow. Empty, it has a modest heft (tap-hammer magnitude), for light work. There are some special parts to this hammer, which now need to be described.

First is a kind of valve between the hollow hammer head and the hollow handle. We start this discussion with the valve in the closed position.

Second and third are some screw-type gadgets that can move through the interior of each hollow. You would twist external knobs to make them do that.

Now, suppose we filled the hollow handle with lead pellets. They might rattle loosely, so we turn the knob on the hammer handle, and the screw-gadget moves a kind of barrier down the hollow handle, until the slack is taken up, and the pellets no longer are able to rattle.

Meanwhile, the hammer head has the same mass or weight as before. It is still a tap-hammer.

Open the valve, and let some of the lead pellets move from the hollow handle to the hollow hammer head. The valve is then closed again. Adjust the handle-knob to once again prevent the remaining pellets in the handle from rattling.

And now you rotate the hammer-head knob, to move the other interior barrier, so that the pellets in the hammer head don't rattle, either.

The hammer is now effectively a medium-duty hammer.

Loosen up on the hammer-head knob, open the valve and let still more pellets move from the handle into the head, and you can have a "bigger" hammer.

Note that there should never be a need to add or remove pellets from the overall hammer; they can be permanently sealed inside. They simply are able to be manipulated, moved from the handle to the head and back again, as needed, so that your one hammer can be "smaller" and "bigger" as required.

And, of course, we shouldn't use lead pellets in the first place. We should use pellets of depleted uranium, instead. The Government, after all, is willing to throw the stuff away, giving it to any enemy they shoot their shells at, so it should be available cheap. And it is 70% denser than lead!