IMPROVEMENTS IN DRILLING MACHINES AND HOISTING MACHINES
Year: 1867

page_text: PROVISIONAL SPECIFICATION left by George Allix at the Office of the
Commissioners of Patents, with his Petition, on the 15th June 1867.
I, GEORGE ALLIX, of Saint Helier's, Jersey, Shipwright, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN DRILLING MACHINES
AND HOISTING MACHINES," to be as follows:-
My Invention relates firstly to machines for drilling holes in metal or other
material, and consists in constructing them as follows:-A fly wheel is fitted
on a horizontal spindle at such a height that a man can conveniently work it
by a rod carried down from near the periphery of the wheel and provided at
its lower end with a handle. This wheel is weighted at a part about dia-
metrically opposite the connection of the rod. The spindle of the wheel carries
a bevil pinion in gear with a horizontal pinion of, say, four times the diameter
near the upper end of a vertical shaft. These pinions and fly wheel are:
carried by a bracket extending from an upright; the vertical shaft at the top
works on a centre, while its lower end is formed to receive the drill or tool.
At a short distance from the lower end this shaft carries a small pinion
gearing into another pinion of, say, 4 times the diameter on the top of another
vertical shaft; near the lower end of this second shaft is another pinion in
gear with a larger pinion of, say, 4 times the diameter. The spindle of this
larger pinion rests on a piece or placement carried out from the upright, and
is formed at its middle with a female thread to receive a threaded vertical rod,
the upper end of which carries a top piece to support, immediately below the
drill, the metal or article to be drilled.

page_text: The action is this:-The turning of the fly wheel by the rod and handle
drives the upper pinions and first vertical shaft and therefore rotates the drill;
the second vertical shaft and gearing connected therewith transmit the motion
from the first shaft to the pinion or the threaded rod so that the rod gradually
rises together with the metal under operation and feeds the drill. The
gearing is arranged so that this pinion makes one revolution for, say, 64
revolutions of the fly wheel. To throw the pinions on the second shaft out of
gear when required I raise a lever on which the lower end of this shaft rests.
The vertical shafts and threaded rod are carried down through horizontal
pieces or placements carried out from the uprights to act as guides. A hook
holds the lever when it is not in use.
The chief features in this machine are, the fitting of the fly wheel at a
convenient height and working it by a rod and handle; the bracket to carry
this wheel and the bevil pinions; the fitting of the second shaft with its pinions;
the fitting of the threaded rod which feeds the material under operation; the
pinion formed with a female thread for this rod; the disconnecting lever and
the placements for keeping the shafts and gear in place. The bracket and
placements are preferably made in a piece with an upright of cast or wrought
iron secured to a post or other part.
A modified arrangement for feeding the material under operation consists of
a vertical rod carrying a top supporting piece and resting at bottom on a lever
weighted so that the rod with the top piece is gradually raised to feed the
drill. The lever is carried through the frame of the machine near the bottom,
and by pressing by the foot on the unweighted end the weight is raised and
the drill relieved. The vertical rod is in this case also carried up through
placements extending from the upright or frame.
In constructing machines for hoisting weights by means of a chain or rope
I employ a fly wheel worked by a rod and handle as herein-before described,
and a pinion on the spindle of the fly wheel transmits the motion by other
pinions to a drum round which the chain or cord winds.