Year: 1897

page_text: Date of Application, 11th Mar., 1897
Complete Specification Left, 10th Dec., 1897-Accepted, 12th Feb., 1898
I, ARTHUR ALBERT TATTERSALL, of Mill Hill Tool Works, Mill Hill, Blackburn,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to a tool which consists of a breast, lever, and screw feed
drill capable of being used either alone or in combination with a crank brace and a
ratchet or a ratchet brace.
The present invention is mainly a further development of my prior invention
No. 9576 dated 13th May 1893.
In carrying out my present invention under one arrangement I fit into the stock
or drill holder of the tool a spindle having a tapered and squared end. This tapered
end is made with a screwed socket into which another short spindle can be fitted.
This short spindle is screwed at one end and plain at the other or it may be screwed
at both ends. The outer end is provided with a taper point.
When it is desired to use the drill as a breast drill, a breast plate, which is pro-
vided with the tool, can be secured to the outer end of the short spindle either by
screwing it into position or securing it thereto by means of a pinching screw.
Whenever necessary, in drilling operations, lever pressure can be brought to bear
on the point at the outer end of the short spindle.
A screw feed can be given to the drill by screwing back the short spindle.
The drill is preferably made with fast and slow gear and is provided with a
laterally projecting handle secured into place or push jointed on a stud on the main
spindle.
In place of using a spindle and breast plate arrangement as afore-described, I
may merely insert a. steel stud in the square tapered end of the spindle which is
fitted in the drill stock or holder. This steel stud would have a pointed end for the
application of lever pressure.
When it is desired to use the improved tool as a crank ratchet brace I fit on the
tapered end of the spindle above mentioned a crank arrangement made in three
parts. The ends of these parts are accurately turned and bored to fit into one
another and are locked in position at the joints by means of set screws. The third
part which is removable has a ratchet on it.
When the tool is to be used as a ratchet brace I simply disconnect the crank
arrangement by loosening the set screws and fit the parts thereof end to end in
place of at right angles to each other so as to form a long lever.
The crank part can be extended and used as a ratchet with long lever handle.
Tied this 10th dow of March 1807

page_text: Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
consider novel and desire to claim is:-
1. The use in conjunction with a speed drill of a short auxiliary spindle (h),
or its equivalent, which at one end is adapted to screw into a hole made in the
spindle of the drill and at the other end is provided with a centre and also a remov-
able breast plate, substantially as hereinbefore described with reference to the
drawings annexed.
2. The improved combination tool, comprising the speed drill, the double jointed
crank and ratchet brace and the auxiliary spindle with its removable breast plate,
the several part being constructed substantially as hereinbefore described with
reference to the drawings annexed.