A New or Improved Mortising or similar Machine.
Year: 1899

page_text: Date of Application, 25th Aug., 1899-Accepted, 21st Oct., 1899
A New or Improved Mortising or similar Machine.
I, WILHELM LANGNER, of Schillerstrasse 25, Breslau, in the German Empire,
Locksmith, 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:-
This invention relates to a machine for cutting mortises and similar cavities
in doors, window-frames, and the like.
The new machine is illustrated by the accompanying drawings in which
Figure 1 represents it in partial elevation and in partial longitudinal section.
Figure 2 shows the machine in cross section.
Figures 3 and 4 illustrate the reversing mechanism in different positions.
Figure 5 shows in plan a device which may be employed for giving lateral
motion to the apparatus.
The apparatus is mounted upon a frame a which is adapted to be fixed upon the
edge of the door, window-frame, or the like, and to be secured in place by means
of the screws b. c is a drill or rotary cutter attached to or formed upon the
spindle and capable of being rotated by the bevel wheels e and f and the crank
handle g.
A suitable screw h is provided for the purpose of feeding the drill c
vertically.
This cutter or drill e with its driving and feeding mechanism is carried by a
suitable frame or sliding carriage i which may be moved along the rail k, and the
rail may be so mounted in the principal frame of the machine that it may be
moved laterally, as, for example, by means of screws 1, one of which is shown
clearly in Figure 5.
The devices by means of which the cutter is moved along the machine are
constructed and arranged as follows. The shaft d of the cutter c carries a pinion m
which gears with a wheel n carried by an arm o pivotted upon the shaft d.
Secured to the wheel n is a pinion p which gears with one or other of the racks
formed on the rail k, according to the position of the arm o. The arm o is formed
with a slot r into which projects a pin s from a bell-crank levert which is also
mounted to rotate upon the shaft d.
When the drill c and its shaft d are rotated they are also fed along the machine
owing to the engagement of the pinion ? with one of the racks. When they have
travelled far enough the free end of the bell-crank lever t comes against an
adjustable stop u, which causes the lever to swing round and finally carry with
it the arm o so that the pinion p is disengaged from the one rack and caused to
engage with the other. Upon the further rotation of the shaft d the tool is
carried back again. The depth of cut will, of course, be varied by means of the
screw h.
In order to keep the pinion p in engagement with its rack the end of the
levert may be provided with a spring latch or button v to engage with corre-
snonding recesses or grooves in the framing.

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:
-
1. In a mortising or similar machine, reversing mechanism constructed arranged
and operated substantially as hereinbefore described and as illustrated by the
accompanying drawings.
2. A mortising or similar machine, constructed arranged and operated sub-
stantially as herein before described and as illustrated by the accompanying
drawings.
Dated this 24th day of August A.D. 1899.
W. E. HEYS & SON,
Agents for the Applicant.