PAPERS in Lathe Tools.
Year: 1899

page_text: Date of Application, 13th Nov., 1899
Complete Specification Left, 17th July, 1900-Accepted, 18th Aug., 1900
PAPERS in Lathe Tools.
I, HENRY STEPHEN LAND, of 19, Athenlay Road, Waverley Park, London,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to lathe tools adapted for cutting and shaping articles.
According to this invention it is proposed that the material to be cut and
shaped should be held in the chuck of an ordinary lathe, and that portion of
the material to be immediately acted upon should enter a face or supporting
plate upon the tool holder having an opening approximately of the shape of the
material to be fed through it. The face plate is removably held in the tool
holder and is capable of free rotation with relation thereto and this end is pre-
ferably secured by means of ball bearings interposed between the plate and
holder, the bearings themselves being protected from the ingress of dirt or other
substances by a separate sleeve.
T
The tool holder is provided with jaws or gripping plates adapted to receive
one or a series of cutting or shaping tools which can be set at any desired point
or angle with reference to the material to be acted upon it being deemed pre-
ferable to have cutters or shapers upon opposite sides of the work at the same
time, this construction giving a support to the work. The cutters may be
arranged so as to be fed forward through the jaws or gripping plates.
Dated this 18th day of Nozamba. 1000
LA LA POIS.
I, HENRY STEPITEN LAND, of 19, Athenlay Road, Waverley Park, London,
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:-
My invention relates to an improvement in lathe tools adapted for cutting and
shaping articles, it having been designed particularly with a view to its appli-
cation to surfaces to which a rotary motion is imparted though it is capable of
acting if rotated upon a stationary work the object being to turn or cut with
great rapidity and accuracy articles of various shapes and designs so that large
numbers of articles may be produced after the cutters are once set, each one of
such articles being an exact facsimile of the other.
Di Q77

page_text: One form of tool constructed according to my invention 18 mustrated
accompanying drawing in which:-
Fig. 1 is a longitudinal section of the tool on line
Fig. 2 is a plan of the tool.
Fig. 2.
Fig. 3 is an end view looking in the direction of the arrow Fig. 1.
Fig. 4 is a view of a detached part on line y y Fig. 1 looking to the right, and
Fig. 5 is a view of another detached part also on line y y but looking to the
left.
The material or rod. to be cut or shaped is preferably held in the chuck of an
ordinary lathe and the tool forming the subject of my invention is held by its
shank in a turret head or suitable sliding holder.
The tool consists of the shank 1 carrying an open neck portion connecting it
with a head 2 the latter as shewn being of cylindrical form though it may be
of any suitable shape. The neck portion has an opening 3 through which the
turnings may fall and is recessed or chambered as shewn at 4.
To the upper faces 5 of the neck are applied clamping devices for the tools
which in this case are in the form of plates 6 held to the faces 5 by set screws 7.
In the form shewn each plate 6 holds cutting tools 8, 9, which are of suitable
form for the work required to be done and are placed at suitable angles the
plates being recessed to receive such cutters and maintain them in position as
shewn in Fig. 1.
The cutters being arranged opposite to each other as shewn prevent the work
being deflected as it might be in the case of a deep cut made by tools acting
on one side only.
The centre of the shank 1, has an opening through same carrying a tool 10
which is held in position by a set screw 11 such tool in the form shewn having
a point so that it acts as a centreing tool.
The head is recessed at 12 and is provided with an opening 12ª communicating
with the chambered part 4 of 'the neck. A shoulder is left by such recessing
and such shoulder has a groove 13 adapted to receive anti-friction balls which
are held in place by a ring 14. Figs. 1 and 4 having a similar groove 15.
Inside the ring 14 and passing down the opening 12ª so that it rests upon a
shoulder 16 is a sleeve 17 to protect the hall bearing from turnings or dirt
which would impair its efficiency and to enable this sleeve to turn with the
ring 14, recesses 18. 18. shewn in Fig. 4 are formed partly in the face of ring 14
and partly in the edge of sleeve 17 to receive studs 19 Figs. 1 and 5 on a collar 20
which seats in the recess 12 and which forms a revoluble holding means for the
work. The front face of the head 2 is provided with an undercut groove 21
into which is passed a tapering plate 22 which when in position will hold the
collar 20 and parts of the ball bearing in place. This collar 20 is shewn as pro-
vided with a hexagonal opening 23 so that it is adapted to receive a hexagonal
* rod of material from which the articles are to be turned but such collar will
have its opening shaped to correspond with the shape of the bar or rod which is
being used. The plate 22 has an opening 24 which is larger than the opening
in collar 20 so that the rod may be clear of same. The plate 22 forms a con-
venient means for holding the ball bearing in place but any suitable sub-
stitute for it may be employed.
In oneration the rod of material held in a suitable revoluble chuck is passed
through the opening 23 which it will fit closely, and the tool held in the turret
head is advanced so that the cutters 8 and 9 act on same to reduce or otherwise
shape it and the cutter 10 makes a true centre in the end of the work so that
subscquent operations of drilling or boring of the article if required_can_be
carried on from a centre which will be perfectly true with the periphery. The
ollar 20 ring 14 and sleeve 17 rotate with the rod which is thus supported by
a revoluble holding means close up to the first cutting tool 8 thus enabling very
accurate cutting to be effected while the ball bearing enables the parts to run

page_text: freely. The tool is withdrawn and the work is subjected to other tools for
finishing and cutting off.
If will be obvious that the ball bearing need not be of the exact construction
illustrated as any suitable cup and cone bearing arrangement may be employed.
The cutters shewn consist of pieces of square steel one of them 8 having a
chisel edge and the other 9 a bevel or cutting edge in the form of a graver but
auch cutters may of course be of any suitable form and will be held down by a
clamping plate suitably shaped to their particular construction so that when
they are once in position they are prevented from moving and a large amount of
repetition work may be produced from them such as is required in the case of
sorews clectric terminals bolts set screws tyre valves and like articles.
It will be obvious that the tool may be held in a revoluble chuck and the work
be stationar in which case the parts of the ball hearing which revolve in the
previous case will be stationary the surrounding part of the head revolving instead
and this arrangement I include when I employ the term "revoluble holding
means.
33
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. In a lathe tool the combination of a shank, a neck portion attached to the
said shank. cutters and means for holding the same, a head attached to the said
neck nortion, a revoluble holding device within said head for supporting the
work. and a slide for retaining the holding device in position, substantially as
described.
2. In a lathe tool, the combination of a shank, a neck portion attached to the
said shank, cutters carried by said neck portion, clamps for adjustably holding
the cutters therein, a head, a collar within the said head having an opening
shaped to receive and hold the work, and means for holding the said collar in
place. substantially as described.
:
3. In a lathe tool and in combination, a shank adapted to be held by a holding
device. a neck portion, cutters carried by same, 'clamps for adjustably holding
the cutters therein, a head. a collar carried by same having an opening shaped to
receive the work and a ball bearing for said collar adapted to reduce the friction
when the work or tool is rotated, substantially as described.
4. In a lathe tool, the combination of a shank, a 'neck portion attached to the
said shank, cutters carried by said neck portion, clamps for adjustably holding
the cutters therein, a head. a collar within the said head having an opening
shaped to receive and hold the work, and a slide piece in eaid head for retaining
the collar in place, substantially as described.
5. The improved lathe tool constructed substantially as described and
illustrated.
Dated the 17th day of July 1900
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, Chartered Patent Agent, for the Applicant.
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, Chartered Patent Agent, for the Applicant.