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Патент USA US2112351

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March 29, 1938.
R. STUHLMACHER
‘
2,112,351
ULATING MACHINES
Filed Aug. 30, 1935
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Patented Mar. 29, 1938
2,112,351
UNITED STATES
PATENT oFF-i-cE
2,112,351
FRAME FOR TYPEWRIT‘ERS, CALCULATING
MACHINES, AND‘» THE LIKE
Richard Stuhlmacher, Siegmar, in Saxony, Ger-v
many, assignor to Wanderer-Werke vorm.
Winklhofer & Jaenicke Akt.-Ges., Schonau,
near Chemnitz, Germany
Application August 30, 1935, Serial No. 38,639
In Germany September 5, 1934
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4 Claims. (Cl. 197—186)
The invention relates to frames for typewriters, provided in one of a pair of abutting frame mem
calculating machines and other of?ce machines hers I, 2 or 3, for example the member 2 or 3.
composed of a plurality of external members.
These grooves are preferably cast in the member
Heretofore such frames, after their assembly, so that machining at this place is entirely un
required ?nishing at the joints of the external necessary. The joint seam 9 then lies in a
members to remove unavoidable irregularities corner of this groove l0 and is quite out of sight.
and projecting edges at the abutting places in the
The purpose of the invention can also be
outer surfaces of the frame members. The joint achieved by providing projections It (Fig. 4) in
seams had to be polished and smoothed by hand. stead of depressions I?, at the abutting places of
The assembled frame was lacquered so that the the members I, 2, and 3 which projections sim
butt joints were entirely covered whereby the ilarly extend along the whole length of the joint
frame could not be taken apart without injuring scams 9. These projections preferably consist of
its external surface.
ribs IS on one of the abutting members I, 2 or
The object of the present invention is to over
3. Also in this case the joint seam 9 which lies in
come these disadvantages and to simplify the a corner of the rib 16 is out of sight.
manufacture of the frame and the assembly of
By the described means the advantage is ob
its parts into a frame of pleasing appearance.
tained that the external members l, 2, 3 of the
According to the present invention, these ob
frame do not have to be ?nished at their abut
jects are achieved by providing on the external ting places after their assembly, nor need they be
surfaces of the frame members at the abutting ?led or polished in any manner. The ?nally as
places, recesses or projections extending along the sembled and connected external members i, 2, 3
scams or butts.
can be lacquered without ?nishing operations
The invention is illustrated by way of example even before the transverse members 4-8 are in
in the accompanying drawing, in which:
serted. The polishing of the assembled external
Figure 1 is a perspective View of the frame, members at the joints prior to lacquering which
from the rear,
was heretofore necessary, is thus eliminated,
Figs. 2 and 3 are elevatio-nal and sectional plan which polishing was very tedious especially in
views, respectively, of a detail, and on a larger the case of cast or welded frames.
scale, Fig. 3 being taken on line 3——3 of Fig. 2, and
The further advantage can be obtained of
Fig. 4 is a sectional view, also on a larger scale, singly lacquering the members of the frame be
of a modi?ed form of joint.
fore their assembly. Separate lacquering of the
The frame illustrated in Fig. 1 is a typewriter members is much easier to accomplish than the
frame consisting mainly of two side members I, lacquering of the entire cage-like frame which
a front member 2 removably connected to the
side members and surrounding the keyboard on occupies a considerable open space. A ?nish lac
quering of the joints is not necessary because the
three sides, a rear member 3 also removably con
nected to the side members I, and a number of lacquered recesses Ill, l5, or projections I6 of the
transverse members 4, 5, 6, ‘l, and 8 for support
ing working parts and internally bracing the
40 frame.
At abutting places of the main outer members
I, 2, and 3 of the frame recesses 50 are provided
in the surfaces of the machine which are external
and visible when it is ?nished, these recesses ex
45 tending along the length of the butt joints 9.
These recesses 10 give the advantage that any ir
regularities and projecting edges are no longer
visible and cannot be objectionable. Although
such irregularities and projecting edges are gen—
50 erally of tri?ing order, they can hardly be avoided
in assembling a frame from a plurality of butt
joined members and heretofore they had to be re
moved by ?ling or polishing as they detracted
from the appearance of the machine.
The recesses may consist of shallow grooves I0
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25
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singly lacquered members i, 2, 3 conceal the
joint scams 9. The pleasing appearance of the
lacquered external surfaces of the ?nished frame
is in nowise impaired by the recesses or projec
tions extending in regular pattern, on the con
trary these recesses o-r projections have a dec
orative aspect.
The material of which the frame parts are 45
made comprises any metal which is universally
used in the present day manufacture of frames
for'typewriters, calculating machines, etc. Fur
thermore the frame parts can be connected to
gether by any known means and, for example, as
shown in Fig. 1 screws 9' are used at the back
and a hinge construction II to M at the front.
0
I claim as my invention:
1. A. frame for typewriters, calculating ma
chines and the like, comprising a plurality of 55
2
2,112,351
members abutting each other forming abutting
lines at the external surface of the frame, parts
of the external surfaces of two abutting members
near an abutting line lying in the same plane,
and one of the abutting members being provided
Cl
with a strip along the abutting line having a non
co-planar surface with said parts for placing the
abutting line into the edge of a re-entering angle.
2. A frame according to claim 1, in which the
non co-planar surface is counter-sunk below the
external surface of the assembled frame.
3. A frame according to claim 1, in which the
non co-planar surface is above the external sur
face of the assembled frame.
4. A frame according to claim 1, in which the
plurality of members are lacquered before the
frame is assembled.
RICHARD S'I’UHLMACHER.
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