Improvements in Tools for Boring Metals.
Year: 1894

page_text: Date of Application, 8th May, 1894
Complete Specification Left, 8th Feb., 1895-Accepted, 9th Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Tools for Boring Metals.
We, WILLIAM ANDERSON, of Altrincham, Cheshire, Draughtsman, and GEORGE
RICHARDS & Co. Lp., of Broadheath, Cheshire, Engineers do hereby declare the
nature of this invention to be as follows:-
We employ a boring head or chuck with vee shaped slots on face to carry the
tools. On the back of this chuck, we place a plate which revolves on the chuck,
and which has cut on its face, a screw-thread or scroll; this thread engages with a
similar thread cut on the back of tool-holders, so that by revolving the scroll plate,
we enlarge or decrease the boring capacity of the chuck. We also propose to
expand and contract the tool-holders by means of screws working independently on
each tool-holder, or combined together by means of bevel wheel and pinions. In
either case, we place a set screw in front of the vee shaped tool-holder, so that when
they are set to the required diameter, they may be locked there. For small size
chucks, we employ a screw and cone in place of the scroll or screws for expanding
the tool-holders.
Dated this Seventh day of Mov 1894
WILLIAM ANDERSON.
For GEO. RICHARDS & Co., LTD.,
CHAS. R. IORNS,
Managing Director.
J
We, WILLIAM ANDERSON, of Altrincham, Cheshire, Draughtsman, and GEORGE
RICHARDS & Co. LD., of Broadheath, Cheshire, Engineers 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 :-
Our invention relates to a boring head or chuck arranged to expand or contract
in diameter by means of a scroll plate, or bevel wheel, pinions and screws.
In the accompanying drawing,
Fig. 1 represents front elevation, Fig. 2 cross section, and Fig. 3 side elevation
of boring head.
Fig. 4 represents scroll plate removed from boring head.
We employ a boring head or chuck A with vee shaped or other suitable slots on
face to carry the tool-holders B. On the back of the chuck A, we place a plate C,
which can be revolved on the chuck A, and has cut on its face a screw thread or
scroll (represented by dark line in Fig. 4). This thread or scroll engages with a
similar thread cut on the back of tool-holders B, and by revolving the scroll plate C,
we enlarge or decrease the boring capacity of the boring head or chuck. The
scroll plate C is held in position by means of ring or washer D, and screws E.
We place a set screw F in front of tool-holders B, so that when they are set to the
required diameter, they may be locked there.

page_text: We also propose to expand and contract the tool-holders by means of screws
working independently on each tool-holder, or combined together by means of bevel
wheel and pinions.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is ;-
1st. The combination of a chuck, scroll plate, and tool-holders for increasing or
decreasing the diameter of the boring head, substantially as described.
2nd. The combination of a chuck, bevel wheel, bevel pinions and screws for
increasing or decreasing the diameter of boring head, substantially as described.
3rd. The application of set screws in front of chuck for locking tool-holders when
set to required diameter, substantially as described.
Dated this Seventh day of February 1895
WILLIAM ANDERSON.
P.p. GEO. RICHARDS & Co., Ld.,
CHAS. R. IORNS,
Director.
WILLIAM ANDERSON.
P.p. GEO. RICHARDS & Co., LD.,
CHAS. R. IORNS,
Director.