Year: 1892

page_text: Date of Application, 12th Apr., 1892
Complete Specification Left, 7th July, 1892-Accepted, 13th Aug., 1892
As in the original machine A is the tool stock. B its block fast to and revolving
with the stock A, and F the guide held from revolving with stock A.; and the
carrier D is connected by the ways d d with block B, and the tool holder
connected by ways g₁g with carriage D.
is
In the former machine the stud d was fast to carrier D, and the anti-friction
roll on stud d was controlled by the outer wall only of guide F, its motions towards
the axis being positive from contact with the outer wall of guide F while its motions
in opposite directions were due to springs.
The first feature of this present invention is that stud d' is controlled positively
in both directions, the guide F having two walls ff the outer wall f moving stud d²
positively, towards the axis as before, but the inner wall' moving stud d' away
from the axis. This feature of the invention is obviously applicable to that form
of the machine in which the stud is rigidly connected to carrier D, but in
order to show both features of the invention I have shown stud as part of a
lever dwhose fulcrum is carried by block B. The lever d³ is connected by
pin d' with carrier D.
The tool holder g in which tool G is made fast, is connected to carrier D by the
ways gl g, and the tool holder g is adjusted on carrier D by the screw g³ as
in the former machine.
The fulcrum d is adjustable on block B by means of the nut de; and by the
adjustment of this fulcrum d the throw of carrier is made more or less with a
single.guide F; as will be clear without further description.
The operation as follows:-
The tool G must revolve with stock A, when that stock is revolved in the
usual drilling or boring machine, and it will revolve upon the axis of stock A;
but as it revolves on the axis of stock A, the stud d is caused to travel
between the walls ff of guide F which is held from revolving; and thereby stud d
is moved towards and from the axis of stock A as stock A revolves; and this
motion of stud moves lever d³ which compels carrier D to move across the axis

page_text: of stock A, carrying tool holder y with it; and thereby causing guide F to control
the action of tool G.
D
161
COMPLETE SPECIFICATION.
An Improved Machine for Boring and Shaping.
A communication to me from WILLIAM JOHN SMITH, of Boston, in the County of
Suffolk and State of Massachusetts, United States of America, Engineer.
I WILLIAM EDWARD GEDGE of No. 11 Wellington Street, Strand, in the City
and County of London, Patent Agent, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to an improvement applied to the apparatus for turning
boring and shaping machines the subject matter of William John Smith's
application for Letters Patent No. 15,145 of 7th September 1891, the improvement
consisting mainly in moving the tool carrier positively in both directions by the
guide. A second feature of this invention consists in connecting the tool carrier
and guide by a lever, whereby a single guide will answer for a variety of work by a
simple adjustment of the length of the lever arms.
I will proceed to describe this invention by reference to the drawing left with the
Provisional Specification, upon which :-
Figure 1 is a sectional elevation of this improved machine;
Figure 2 is an elevation ;
Figure 3 is an under plan of the guide;
Figure 4 is a plan of the block detached ;
Figure 5 is a plan of the adjustable fulcrum detached ;
Figure 6 is an elevation of the lever.
As in the original machine A is the tool stock, B its block fast to and
revolving with the stock A, and F the guide held from revolving with stock A ;
and the carrier D is connected by the ways d, d' with block B, and the tool
holder is connected by ways g', g' with carriage D.
In the former macbine the stud was fast to carrier D, and the anti-friction
roll on stud & was controlled by the outer wall only of guide F, its motions
towards the axis being positive from contact with the outer wall of guide F
while its motions in opposite directions were due to springs.
The first feature of this present invention is that stud d is controlled positively
in both directions, the guide F having two walls f, f' the outer wall moving
stud d positively, towards the axis as before, but the inner wall moving
stud d' away from the axis. This feature of the invention is obviously applicable
to that form of the machine in which the stud is rigidly connected to carrier D,
but in order to show both features of the invention I have shown stud d' as
part of a lever whose fulcrum is carried by block B. The lever d' is
connected by pin do with carrier D.
The tool holder g, in which tool G is made fast, is connected to carrier D by the
ways g', g, and the tool holder g is adjusted on carrier D by the screw 9³, as in the
former machine.
The fulcrum d is adjustable on block B by means of the nut do, and by the
adjustment of this fulcrum d' the throw of carrier is made more or less with a single
guide F, as will be clear without further description.
The operation is as follows:-
The tool G must revolve with stock A, when that stock is revolved in the usual
drilling or boring machine, and it will revolve upon the axis of stock A ; but as it
revolves on the axis of stock A, the stud is caused to travel between the walls ff¹

page_text: of guide F which is held from revolving; and thereby stud d' is moved towards
and from the axis of stock A as stock A revolves; and this motion of stud d'
moves lever which compels carrier D to move across the axis of stock A, carrying
tool holder g with it; and thereby causing guide F to control the action of tool G.
Having now particularly described and ascertained the nature of the said
invention, communicated to me as aforesaid, and in what manner the same is to be
performed, I declare that what I claim is :-
1. In a machine of the kind described, a double acting guide combined with the
tool stock, the carrier, and the tool holder; whereby the carrier is wound positively
in both directions by the guide substantially as described.
2. In combination the tool stock, the carrier, the tool holder, the guide, and a
lever connecting the carrier and guide all substantially as described.
Dated the Seventh day of July 1892.
W. E. GEDGE.