An Improved Device for Transmitting Rotary Motion, particularly applicable to Hand Drills.
Year: 1895

page_text: Date of Application, 2nd July, 1895
Complete Specification Left, 25th Mar., 1896-Accepted, 25th Apr., 1896
PROVISIONAL SPECIFICATION.
An Improved Device for Transmitting Rotary Motion, particularly
applicable to Hand Drills.
Communicated by CESARE TOGGIA, of 15, Via Alessandro Volta, Rome, in
the Kingdom of Italy, Mechanic.
I, WILLIAM PHILLIPS THOMPSON, F.C.S. M.I.M.E. of The Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool and 6 Bank Street,
Manchester both in the County of Lancaster, 118, New Street, Birmingham
in the County of Warwick and 31, High Holborn in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object an improved device for transmitting rotary
motion and is more particularly applicable to hand drills, such as are ordinarily
used by joiners and mechanics, and has for its object to provide an apparatus
whereby greater speed and power are obtained than with any other known form
of hand drill, and the construction of which is very simple and inexpensive.
In order that the said invention may be more fully understood, reference will be
made to the accompanying drawing, in which,
Figure 1 is a side view of the improved apparatus, with a part of the casing
removed, and
Figure 2 is an edge view of the gear wheel.
A is the casing, B is the driving shaft having an endless screw thread, C is the
gear wheel for communicating the motion to the driving shaft, the said gear wheel
being mounted upon a shafte having its bearings on an extension of the casing,
and provided at one end with a handle, not shown in the drawing, by means of
which it is turned.
The main feature of the invention consists in the connection between the gear
wheel and the driving shaft, and in the propeller shape of the teeth of the said gear
wheel, which gears vertically with the endless screw on the shaft, instead of
horizontally, as heretofore practised in such kind of gears.
E is the drill holder, which may form part of, or be secured to the driving shaft.
F is the bearing for the pivot of the driving shaft, which is adjustably secured
to the casing by a screw thread D and nut, as shown, so as to provide for
wearing.
This invention has been described as applied to a drilling apparatus, but it can
obviously also be applied to other rotating tools or implements and to many other
purposes, for the transmission of rotary motion by hand power, and it is not there-
fore intended to limit the invention to this particular scope, which has been
described and illustrated.
Dated this 1st day of July 1895.
WM. P. THOMPSON & Co.,
Agents.

page_text: An Improved Device for Transmitting Rotary Motion, particularly
applicable to Hand Drills.
A communication by CESARE TOGGIA, of 15 Via Alessandro Volta, Rome, in
the Kingdom of Italy, Mechanic.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, 118 New Street, Birmingham in the
County of Warwick and 31 High Holborn in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement :-
This invention has for its object an improved device for transmitting rotary
notion and is more particularly applicable to hand drills, such as are ordinarily
used by joiners and mechanics, and has for its object to provide an apparatus
whereby greater speed and power are obtained than with any other known form of
hand drill, and the construction of which is very simple and inexpensive.
In order that the said invention may be more fully understood, reference will be
made to the drawing accompanying the Provisional Specification in which,
Figure 1 is a side view of the improved apparatus, with a part of the casing
removed, and
Figure 2 is an edge view of the gear wheel.
A is the casing, B is the driving shaft having an endless screw thread, C is the
gear wheel for communicating the motion to the driving shaft, the said gear wheel
being mounted upon a shaft & having its bearings on an extension of the casing, and
provided at one end with a handle, not shown in the drawing, by means of which it
is turned.
The main feature of the invention consists in the connection between the gear
wheel and the driving shaft, and in the propeller shape of the teeth of the said
gear wheel, which gears vertically with the endless screw on the shaft, instead of
horizontally, as heretofore practised in such kind of gears.
E is the drill holder, which may form part of, or be secured to, the driving shaft.
F is the bearing for the pivot of the driving shaft, which is adjustably secured
to the casing by a screw thread D and nut, as shown, so as to provide for
wearing.
This invention has been described as applied to a drilling apparatus, but it can
obviously also be applied to other rotating tools or implements and to many other
purposes, for the transmission of rotary motion by hand power, and it is not there-
fore intended to limit the invention to this particular scope, which has been
described and illustrated.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated
to me by my foreign correspondent, I declare that what I claim is :—
1. The improvement in devices for transmitting rotary motion, particularly
applicable to hand drills, consisting in the connection between the gear wheel and
the driving shaft, the gear wheel having propeller shaped teeth and gearing
vertically with an endless screw on said shaft, substantially as hereinbefore
described.
2. The construction and combination of parts taken as a whole, forming the

page_text: improved device for transmitting rotary motion, particularly applicable to hand
drills, substantially as described and illustrated.
Dated this 24th day of March 1896.
WM. P. THOMPSON & Co.,
Agents.