An Improved Apparatus for Feeding and Holding Tools or Work in Machine Tools.
Year: 1888

page_text: Date of Application, 15th June, 1888
Complete Specification Left, 13th Mar., 1889
Complete Specification Accepted, 8th June, 1889
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Feeding and Holding Tools or Work
in Machine Tools.
I, WILHELM LORENZ of Kriegsstrasse 61, of Carlsruhe in the Grand-Duchy of
Baden, Germany, Engineer and Manufacturer do hereby declare the nature of this
invention to be as follows:-
My invention relates to circular revolving slide-rests provided with a series of
sockets or holders at their periphery for holding tools which, by the rotation of the
slide rest, are brought consecutively in line with the object to be operated upon, or for
holding the objects to be operated upon which are consecutively brought in line with
the tool.
According to my invention, instead of constructing such slide rests to revolve
upon a vertical or horizontal axis, with the tools or articles arranged parallel to
such axis, I arrange them to revolve upon an inclined axis and with the holders
for the tools or articles inclined towards the axis, either at the same angle of
inclination as the latter, or at any other angle, so that the tools or articles all lie
in the surface of a cone, the apex of which lies in an extension of the axis of the
slide rest. By this means the tool or the article to be operated upon, mounted upon
the slide rest, can be brought into position to operate or be operated upon at any
desired angle. Thus the slide rest may be mounted on an axis inclined at an angle
of 45° to the vertical, so that it is also itself inclined at an angle of 45°, and the
holders for the articles being also mounted at an angle of 45° to the axis, it will
be seen that at one point of the slide rest's periphery the article will be presented
in a horizontal position, while at the diametrically opposite point it will be presented
in a vertical position, in either of which positions it can be operated upon by a
correspondingly horizontal or vertical tool. At intermediate points of the periphery
the articles will be presented at correspondingly varying angles, in which positions
they may either be operated upon by correspondingly inclined tools, or the
articles may be introduced into or removed from the holders at such angles, in
which case their entrance or discharge may be effected by gravity.

page_text: On the accompanying drawing Figs. 1 to 4 shew, by way of example, diagramatic
views of various arrangements of the slide rest, constructed as above described.
Fig. 1 shews a revolving slide rest inclined at 45° and revolving on an axis A. B
inclined at 45°, with which work can be carried on either at the horizontal and vertical
positions I and II, or at any of the intermediate inclined positions III IV V &c.
Fig. 2 shews a revolving slide rest with a horizontal working position I, and
another III at any desired angle. Fig. 3 shews one with a vertical position II
and another III at any desired angle, and Fig. 4 shews one arranged for working
positions IV that are neither horizontal nor vertical. Fig. 5 shews a construction
of the revolving slide rest arranged with its axis A B inclined at 45°, the working
position being horizontal and the position for removing the articles vertical.
Dated this 15th day of June 1888.

page_text: An Improved Apparatus for Feeding and Holding Tools or Work
in Machine Tools.
I, WILHELM LORENZ, of Kriegsstrasse 61 of Carlsruhe, in the Grand Duchy of
Baden, Germany, Engineer and Manufacturer, 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 circular revolving slide rests provided with a series of
sockets or holders at their periphery for holding tools which, by the step by step
rotation of the slide rest, are brought consecutively in line with the object to be
operated upon, or for holding the objects to be operated upon, which are consecutively
brought in line with the tool.
By the step by step motion, the object, after being operated upon, is brought to
another point where it is either acted upon by another tool, or is removed from the
slide rest.
Such revolving slide rests as heretofore constructed are arranged either vertically or
horizontally, revolving round a horizontal or vertical axis, the sockets for the objects
or tools being arranged parallel to such axis and at right angles.to the surface of the
slide rest. The supply and removal of the objects operated upon can therefore only
be effected in a horizontal or a vertical direction, and the tools, such as punches,
cutters, borers &c., and the devices that feed the objects or are connected thereto, can
also only be arranged to move horizontally or vertically.
My present invention has for its object to enable the objects to be operated upon to
be introduced into the revolving slide rest and removed therefrom in a greater variety
of ways and also to enable them to be acted on in correspondingly varied directions.
For these purposes I employ inclined revolving slide rests the axes of which are
consequently inclined at right angles to the slide rest surface, while the sockets or
recesses for the objects or tools are not arranged parallel to the axis, but at an
angle thereto, and to the surface of the slide rest. If the sockets or recesses are
all arranged at such an inclination that their extended centre lines meet at one
and the same point of the central axis, which arrangement is the most suitable-
the slide rest presents the form of the frustrum of a cone, the sides of which
constitute the centre lines of the sockets or recesses for the objects or tools.
In the following description I have only given, by way of example revolving slide
rests of the just described arrangement, as being the best adapted for practical use.
These conical inclined revolving slide rests are by preference arranged at an
angle of 45°, and have sockets or recessess which are also inclined at an angle
of 45° to both the surface and the axis of the slide rest, such axis being at right

page_text: angles to the surface, so that the one side of the cone or the centre line of a
socket or recess is in a horizontal position, while that diametrically opposite is
in a vertical position.
With such a revolving slide rest consequently the feed removal and working of
the objects can be effected not only in a horizontal but in a vertical direction,
and in addition, in any angular direction, as an object introduced into the slide
rest in any angular position will pass, consecutively through the horizontal, vertical,
and all intermediate positions, their axes being made thereby to describe the surface
of a complete cone or conical frustrum round the axis of the slide rest, the apex of
which cone substends an angle of 90°.
Thus with this arrangement, tools such as punches, cutters, borers &c. can be
arranged to operate in a position corresponding to any inclined side of the slide rest
and in a direction either towards the apex or towards the base, or in both directions.
Other angles of inclination may however also be adopted for the slide rest, and also
for the inclination of the sockets or the recesses for the objects or tools, relatively to
the axis.
At Figs. 1 to 4 of the accompanying drawings are shewn diagrammatically some
examples of revolving slide rests constructed according to this invention.
Fig. 1 shews a slide rest inclined at an angle of 45° whose axis A B is consequently
also inclined at 45° and whose sockets a or recesses a¹ are inclined at 45° to both.
The arrows I indicate that the objects carried in the sockets a or recesses a¹ can be
operated upon in a horizontal position either from the one side or the other; the
arrows II indicate that this can be effected vertically; and the arrows III, IV and V
that it can be effected in any intermediate position in the direction of the sides of the
cone's surface.
Fig. 5 shews the practical construction of such a revolving slide rest rotating
upon the axis A B. The one half of the slide rest is shewn provided with sockets a
and the other half with recesses a¹. The slide rest is rotated by means of an
eccentrically situated toothed disc C, whose tooth gears with the notches d formed
in the slide rest, so as, by its rotation, to impart to the latter the required step-
by-step rotary motion. Such step-by-step motion may be effected in various other
ways.
Fig. 2 shews a revolving slide rest which is adapted for operating on the object in a
horizontal position, and also in any inclined position lying in the cone's surface.
Fig. 3 shews a slide rest which is adapted for operating on the object in a vertical
position and in any inclined position lying in the cone's surface. Fig. 4 shews an
arrangement in which there is neither a horizontal or a vertical position, but only
inclined positions, such as those indicated by the arrows III and IV.
Fig. 6 shews the principal parts of a machine with such an inclined revolving
slide rest in which the objects to be operated upon are fed in in a horizontal position
and are acted upon in a vertical position.
The objects a are in this instance cut from a wire 6 by means of a suitably
actuated cutter f and fall into the recesses a¹ of the revolving slide rest D which
carries them gradually round to a vertical position.
Here the blank is forced down by an upper punch 9 out of the slide rest into
a matrix (or it may fall into this simply by gravity) and it is there subjected
to the action of the punch g in combination with a second punch i which is
simultaneously raised by suitable mechanism.
The upper punch 9 then again ascends, while the punch i moves farther upward
SO as to raise the object into the recess of the slide rest again, so that by the
further rotation of the latter it is carried away from the matrix and allowed to fall
into a suitable receiver. The slide rest revolves round the axis A B inclined at
an angle of 45°, and is rotated in the same manner as indicated at Fig. 5.
It will be readily seen that either before or after it arrives in the vertical
position, the object can be operated upon in any manner at one of the intermediate
inclined positions.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is :-
Constructing inclined revolving circular slide rests with sockets or recesses such
as a a¹ for the reception of articles to be operated upon, or of tools, the centre or
axial lines of which, in revolving round the axis A B standing at right angles to
the slide rest's surface, describe the surface of a cone or conical frustrum, sub-
stantially as and for the purposes herein described.