A Covered Guide for Slide-rests of Lathes and other Machine Tools.
Year: 1899

page_text: Date of Application, 12th Dec., 1899-Accepted, 17th Feb., 1900
A Covered Guide for Slide-rests of Lathes and other Machine Tools.
I, FRIEDRICH RUPPERT, Civil Engineer, of Kaiserplatz 1, Chemnitz, Germany,
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:-
The present invention relates to a covered guide for slide rests of lathes and
other machine tools and has for its object to construct a device which will
in a considerable degree allow of maintaining the exactness of the guiding
of slide rests and the like.
In the annexed drawings:-
Figs. 1 and 2 shew the main difference between the new guide for the slide
rest and the old device. Fig. 1 is the old guide, whereas Fig.
new arrangement.
represents the
In Fig. 1 the main body a of the slide-rest serves, at the same time as guide
and resting surface on the bed of the machine.
In Fig. 2 this body does not serve as resting surface, since in this case the
resting and guiding are effected by parts which form a hook with the
inner face of the slide-rest.
In the inner space of this hook is arranged a projecting bead c c which
completely covers the supporting surface d d of those parts which serve as
guide to the slide-rest.
In this manner the guiding surfaces are prevented from being injured by
filings, shavings, chips and the like, and it is consequently rendered possible
to maintain the surfaces in a proper condition and to conveniently grease them,
which has hitherto been difficult with the guides in use. The result is that
these guides soon wear off and lose their shape. The covered guides will pre-
serve their exactness for a longer time and therefore represent an important
advance in the construction of lathes or other machine tools.
In many cases it will be sufficient to arrange only one of the guides according
to the present invention when the shavings will fall on one only. In the same
manner, it will suffice to cover only two out of three, when it is not necessary
to protect the third guide.
The special form of the guides may be arranged in different modifications such
as represented in Figs. 3 to 6.
Fig. 3 represents a covered guide for a rest, with the faces of the bed cut on
a bevel.
Fig. 4 shews a guide with the faces of the bed cut straight.
Fig. 5 is a guide for a bed having a ridge like formation.
Fig. 6 shews a combination of two different forms.
However, it is necessary to follow the principle indicated in Fig. 2, that is
to say the main body of the rest must not be supported on the bed of the
machine direct, but it is supported by free parts which are covered by a pro-
jecting bead. This feature forms the special characteristic of the invention.

page_text: 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
A covered guide for slide rests of lathes and other machine tools, characterised
by the feature that the guiding surfaces of the rest are not arranged immediately
on the main body of the slide rest, but that these surfaces are those of free
parts forming a hook with the said main body and at the inner space of which
a bead is arranged, the latter covering the guiding surfaces, for the purpose of
preventing the filings, shavings, emery, and the like from falling on the said
surfaces thus keeping the latter in perfect order whereby the exactness of the
guides will be longer preserved, substantially as described and illustrated in
The annexed drawings.
Dated thi. Dal law of Th 1800
S. S. BROMHEAD,
Agent for Applicant, 33, Cannon Street, London, E.C.