Apparatus for the Production of Straight and Helical Grooves on Conical, Cylindrical, or otherwise shaped objects such as Rotary Cutters and the like.
Year: 1897

page_text: Date of Application, 12th July, 1897
Complete Specification Left, 16th July, 1897-Accepted, 4th Sept., 1897
Date of Application, 12th July, 1897
Complete Specification Left, 16th July, 1897-Accepted, 4th Sept., 1897
PROVISIONAL SPECIFICATION.
Apparatus for the Production of Straight and Helical Grooves on
Conical, Cylindrical, or otherwise shaped objects such as Rotary
Cutters and the like.
I, CURD NUBE, of Offenbach on Main, Germany, Engineer, do hereby declare
the nature of this invention to be as follows:-
This invention relates to apparatus for cutting grooves on cylindrical-conical or
otherwise formed bodies, more particularly applicable to rotary cutters and boring
tools. I will describe the said apparatus with reference to the accompanying
drawing in which Fig. 1 shews an end view of the apparatus, Fig. 2 a longitudinal
section, Fig. 3 a plan view, Fig. 4 a detail of the guide rail Fig. 5 a section
through the slot of the guide rail Fig. 6 shews another section through the guide
rail and bar i.
The construction and mode of action of the apparatus is as follows:
On a plate b which can slide on guides on a base a is suitably mounted a tubular
Bocket t. This tubular socket t, which is adapted to carry the blank of the tool
to be formed, is provided internally with screw threads into which screws the
screw spindles stationary in the longitudinal direction but capable of being rotated
by a hand wheel h or otherwise, and by the rotation of which consequently the
socket is moved forward or backward in its bearings.
On the axis of the spindle s is fixed a toothed pinion in which gears with a
toothed wheel n fixed on an axis n', which is consequently rotated on the rotation
of o.
The spindle is suitably carried in bearings on the framing, and carries a
bevil pinion o gearing with a bevil pinion of which is fixed to a helical or worm
wheeld gearing with a worm wheel d mounted loose on the sleeve of a disc c.
Thus on the rotation of the hand wheel hand spindle s, the wheels mn,
spindle n', and wheels o o¹ and d are all rotated, but no other effect is produced
than the rectilinear forward or backward motion of the socket t. By this motion
straight grooves are cut into an object carried by t, by means of an operating cutter
past which t is moved. If, on the other hand, the socket is to be rotated at the
same time that it moves longitudinally, then a clutch device carried by the
wheel is made to gear with the disc c so as to carry this and the socket t round
with it. This device consists of a spring f¹ and pointed pin g which, by means of
a lever is made to engage with holes formed in the periphery of c.
The disc c
fits with a feather c' in a longitudinal groove on the socket t, so that on the rotation
of the disc the socket is carried round with it.
The socket t carries at its front end a disc, which engages with a corresponding
notch of a guide piece of the bar which slides in the support.
On the rotation of the hand wheel h, wheel & being coupled with disc c as
described, the sockett will be moved longitudinally along the working cutter,
and will at the same time be rotated, and will also carry the bar along with it.
In this case helical grooves will be cut in cylindrical objects carried by the
socket t.

page_text: On the bar i¹ is mounted the guide rail which by means of its slot can be set
to any desired angle in a horizontal direction upon ¹. When this is done, then
on the rotation of the hand wheel h the socket t will be moved forward and at the
same time rotated (assuming to be geared with c), and it will also be shifted
laterally, as a roller or pin r carried by the bearing z is engaged in the slot k¹ of
the guide rail. The bar i¹ with its guide rail is mounted in a dovetail groove
on the base a, the bar ¹ being only capable of being moved backwards or forwards,
parallel with the socket t. All the other parts of the apparatus are mounted on
the plate b which can travel laterally on the plate a on the dovetail guide thereof;
such parts can therefore participate in the lateral motion which is produced by
the oblique position of the guide rail.
If now there be fixed in the front end of the socket ta cutter blank or other
object to be operated upon, it is possible to cut upon this object a helical groove
the form of which will depend upon the form and position of the guide rail, the
cutting of the groove being effected by means of the rotary cutter of a horizontal
or vertical cutting machine.
If the clutch device g be put out of gear, the guide rail being placed in an
oblique position, it is possible to cut straight grooves in conical objects; if on
the other hand helical or spiral grooves are to be cut in conical rotary cutters, a
correspondingly formed blank is fixed in the socket and the guide rail k is set
to the angle corresponding to that of the conical blank; the clutch 9 is put in gear
and the entire apparatus is inclined in a vertical direction corresponding to the
pitch of the helical or spiral groove to be cut.
This is effected by the screws a¹, by means of which the base a is canted in one
direction or the other upon the rounded or knife edge projection y.
Instead of inclining the apparatus, the working cutter may be inclined to
correspond with the pitch or inclination of the helical groove.
The cutting apparatus can be mounted on a vertical rotary cutting machine or
boring machine, and, with suitable intermediate gear it can also be applied to
a horizontal rotary cutting machine, lathe, or the like, for the production of all
kinds of rotary cutters or boring tools or the like with straight or helical or spiral
grooves.
Dated this 12th day of July 1897.
ABEL & IMRAY,
Agents for the Applicant.
Apparatus for the Production of Straight and Helical Grooves on
Conical, Cylindrical, or otherwise shaped objects such as Rotary
Cutters and the like.
I, CURD NUBE, of Offenbach-on-Main, Germany, Engineer, do hereby declare 4
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 relates to apparatus for cutting grooves on cylindrical conical
or otherwise formed bodies, more particularly applicable to rotary cutters and
boring tools. I will describe the said apparatus with reference to the drawing
accompanying my Provisional Specification in which Figure 1 shews an end view
of the apparatus, Figure 2 a longitudinal section, Figure 3 a plan view, Figure 4 a
detail of the guide rail, Figure 5 a section through the slot of the guide rail;
Figure 6 shews another section through the guide rail and bar i.

page_text: The construction and mode of action of the apparatus is as follows:-
On a plate which can slide on guides on a base a is suitably mounted a
tubular socket t. This tubular socket t, which is adapted to carry the blank of the
tool to be formed, is provided internally with screw threads into which screws the
screw spindles stationary in the longitudinal direction but capable of being rotated
by a hand wheel h or otherwise, and by the rotation of which consequently the
socket t is moved forward or backward in its bearings.
On the axis of the spindle s is fixed a toothed pinion m which gears with a
toothed wheel n fixed on an axis n', which is consequently rotated on the rotation
of s. The spindle n¹ is suitably carried in bearings on the framing, and carries a
bevil pinion o gearing with a bevil pinion o¹ which is fixed to a helical or worm
wheel d' gearing with a worm wheel d mounted loose on the sleeve of a disc c.
Thus on the rotation of the hand wheel h and spindle s, the wheels m, n,
spindle and wheels o o' and d are all rotated, but no other effect is produced
than the rectilinear forward or backward motion of the socket t. By this motion
straight grooves are cut into an object carried by t, by means of an operating
cutter past which t is moved. If, on the other hand, the socket t is to be rotated
at the same time that it moves longitudinally, then a clutch device carried by the
wheel d is made to gear with the disc c so as to carry this and the socket t round
with it. This device consists of a spring f¹ and pointed pin g which, by means
of a lever f is made to engage with holes formed in the periphery of c.
The disc c
fits with a feather c¹ in a longitudinal groove on the socket t, so that on the
rotation of the disc the socket is carried round with it.
The socket t carries at its front end a disc u, which engages with a corresponding
notch or fork of a guide piece of the bar which slides in the support.
On the rotation of the hand wheel h, wheel d being coupled with disc cas
described, the socket t will be moved longitudinally along the working cutter,
and will at the same time be rotated, and will also carry the bar along with it.
In this case helical grooves will be cut in cylindrical objects carried by the
socket t.
On the bar is mounted the guide rail k which, by means of its slot l, can be
set to any desired angle in a horizontal direction upon ¹. When this is done,
then on the rotation of the hand wheel h the socket t will be moved forward and
at the same time rotated (assuming d to be geared with c), and it will also be
shifted laterally, as a roller or pin r carried by the bearing is engaged in the
slot of the guide rail. The bar with its guide rail k is mounted in a dovetail
groove on the base a, the bar i¹ being only capable of being moved backwards or
forwards, parallel with the socket t. All the other parts of the apparatus are
mounted on the plate 6 which can travel laterally on the plate a on the dovetail
guide thereof; such parts can therefore participate in the lateral motion which
is produced by the oblique position of the guide rail.
If now there be fixed in the front end of the socket t a cutter blank or other
object to be operated upon, it is possible to cut upon this object a helical groove
the form of which will depend upon the form and position of the guide rail, the
cutting of the groove being effected by means of the rotary cutter of a horizontal
or vertical cutting machine.
If the clutch device g be put out of gear, the guide rail being placed in an
oblique position, it is possible to cut straight grooves in conical objects; if on the
other hand helical or spiral grooves are to be cut in conical rotary cutters, a
correspondingly formed blank is fixed in the socket t and the guide rail k is set
to the angle corresponding to that of the conical blank; the clutch g is put in
gear and the entire apparatus is inclined in a vertical direction corresponding to
the pitch of the helical or spiral groove to be cut.
This is effected by the screws a¹, by means of which the base a is canted in one
direction or the other upon the rounded or knife edge projection y.
Instead of inclining the apparatus, the working cutter may be inclined to
correspond with the pitch or inclination of the helical groove.

page_text: The cutting apparatus can be mounted on a vertical rotary cutting machine or
boring machine, and, with suitable intermediate gear it can also be applied to
a horizontal rotary cutting machine, lathe, or the like, for the production of all
kinds of rotary cutters or boring tools or the like with straight or helical or spiral
grooves.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. Apparatus for cutting straight or helical grooves on conical, cylindrical, or
otherwise shaped objects, such as rotary cutters and the like, wherein a socket
carrying the object to be cut and receiving a rectilinear to and fro motion by
means of a screw spindle, is capable of having rotary motion imparted to it and
also of being shifted laterally to varying positions, whereby it is made to move the
said object past a working cutter either in a stationary axial line or in a laterally
shifting axial line, and either with or without having rotary motion imparted to it,
substantially as described.
2. In apparatus for cutting grooves such as is referred to in the first claim, the
combination of a socket such as t holding the object to be operated upon, and
receiving longitudinal motion from a screw spindles, a wheel & mounted loose on
the said socket and receiving rotary motion by gearing from the screw spindle,
a disc c also mounted on the socket and having a feather engaged with a groove
thereof, a clutch device for connecting the wheel with the disc c, a bar i il adapted
to move longitudinally with the socket t, a guide rail mounted on the bar i ¹
so as to be capable of assuming any desired angle therewith, and laterally sliding
bearings carrying the socket and having a roller or stud r engaged with a groove
on the guide rail, substantially as and for the purpose described.
Dated this 16th day of July 1897
ABEL & IMRAY
Agents for the Applicant.