An Improved Slide Rest for Lathes and other Machinery.
Year: 1899

page_text: Date of Application, 23rd May, 1899-Accepted, 8th July, 1899
COMPLETE SPECIFICATION.
An Improved Slide Rest for Lathes and other Machinery.
I, FRIEDRICH GUSTAV WILKE, a subject of the Emperor of Germany, and
resident of No. 26, Elisabethstrasse, Leipsic-Volkmarsdorf, Manufacturer, do
hereby declare the nature of my said invention and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:-
1-
This invention relates to an improved slide rest for lathes and other metal
and wood working machinery and has for its object to enable an adjustment
of the tool against the blank or vice versa, without it being necessary to release
the tool or blank from its carrier.
For this purpose the slide rest for the tool or blank is divided according to an
inclined plane or is formed of a lower and upper part, which may be slided one
upon the other, whereby the upper part, bearing or carrying the tool or blank, is
adjusted upwardly. The whole slide rest is preferably adjustable in the known
or usual manner on a prism-guide of the machine.
Referring to the accompanying drawing:-
Fig. 1 is a vertical cross section,
Fig. 2 an end elevation of the slide rest used as tool holder for lathes; in
Fig. 2 there is also shown in dotted lines a blank carried by the slide rest, such
blank being operated upon by a rotating cutter remaining in a relatively fixed
position.
The slide rest adjustable on the prism 6 of the machine bed or base a or the
like, consists of two parts viz. the lower part which has on its lower side or end
a groove corresponding to the prism and the upper part d which moves upward
and downward on the upper inclined surface of the lower part e, a dovetail shaped
projection or lug on the upper surface of the lower part engaging in a corre-
sponding groove on the lower surface of the upper part d, so that the parts c d
are well guided during operation. By this upward and downward movement
of the upper part d of the slide rest the former, on account of the inclined
surface is adjusted vertically and thus enables an accurate adjustment of the
tool e, carried by this part of the slide rest, against the blank to be operated
upon or worked; such an adjustment is necessary, if, for instance, the point of
the tool is worn off by sharpening. In such cases the tool must, with many
known arrangements, be released and in order that the sharpened point is located
in the proper position according to the height, washers or the like must be
inserted between the carrier and tool.
The upward and downward movement of the upper part d of the slide rest is
effected by means of a screw spindle f rotatably mounted in the lower part of
the slide rest without being displaceable in a longitudinal direction. The round
end of the spindle f engages in a hole of the lower part c and a collar of the
spindle abuts against a lug h with plain hole for the spindle. On the exterior
of the lower part c, a covering plate i is secured by screws or in any other suit-
able manner, in which the spindle f, also as in the lug h, can rotate freely. At
the end of the spindle, a square is provided for receiving a suitable key or handle.

page_text: .
The spindle may also be rotated in any other suitable manner. The spindle
engages with the screw threaded attachment or lug on the upper part d of
the slide rest, the lower part of the slide rest being correspondingly recessed for
admitting of the adjustment of the parts of the rest.
The connection of both parts of the slide rest and with the bed is effected by
a screw bolt or pin with nut, for which the upper part of the slide rest is like-
wise sufficiently recessed as shown in Fig. 1 in dotted lines.
By the spindle m an adjustment of the whole slide rest on the bed is effected
in the known or usual manner. The clamping of the tool e is effected by the
screw bolt by means of the plate or any other suitable device. If the slide
rest serves for fixing the blank o, as shown in Fig. 2 in dotted lines, which may
be, for instance, a round shaft, to be operated upon by a rotating cutter p, the
upper surface of the upper part of the slide rest is, for more securely holding the
blank, preferably recessed according to the form or shape of the blank.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed I declare that what I
claim is-
1. Improved slide rest for lathes and other metal or wood working machinery,
consisting of two parts adjustable one upon the other according to an inclined
surface, for the purpose of enabling the tool or blank, carried by the slide rest
to be adjusted vertically without being released, substantially as described and
shown in the drawing.
2. Improved slide rest for lathes and other metal or wood working machinery,
consisting of the parts c, d adjustable one upon the other according to an in-
clined surface, the upper part d being provided with a lug k, with whose screw
threaded bore engages the screw spindle f capable of only rotary motion, sub-
stantially as described and shown in the drawing.
ས་
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.