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Патент USA US3095084

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June 25, 1963
3,095,075
0. BUTTER
APPARATUS F'OR-v DRAWING LINES AND MARKING MEASUREMENTS
AND INSCRIPTIONS ON DRAWINGS
Filed Jan. 6, 1961
36
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NV va/rak:
Otto .Butl'er
By
States
tent
1
ice
3,095,075
Patented June 25, 1963
2
its segment 2 guide plates 3 and 4. Each of the guide
3,095,075
plates 3 and 4 is guided with ‘bent-over ends 5 and 6 on a
guide rail 18 arranged on a ruler 7. The guide rail 8 is
provided on each of its opposite longitudinal sides with a
Otto Butter, Neckargemund, Germany, assignor to Gesell
schaft fur indnstrieile Technik m.b.H., Heidelberg, Ger
toothing 9 and .10 respectively. The bent-over ends 5
engage in the toothing 10 and the bent-over ends 6 engage
in the toothing 9. On the upper side of the guide rail 8
a raceway 11 is provided for guide rollers 12 and '13
mounted on pivot pins 36 carried by the guide plates 3
APPARATUS FOR DRAWING LINES AND MARK
ING MEASUREMENTS AND INSCRIPTIONS 0N
DRAWINGS
many, a ?rm
Filed Jan. 6, 1961, Ser. No. 81,107
Claims priority, application Germany Mar. 23, 1960.
6 Claims. (Cl. 197-2)
and 4.
Key levers 14 and also type levers 15 actuated thereby
The object of the invention is to provide an apparatus
are provided in the segment .2 as in the case of type
for drawing lines and marking measurements and inscrip
writers, only one of each of these levers 14 and 15 being
tions on drawings Which is also suitable for preparing
shown in FIG. 1. Underneath the key levers 14 a known
drawings on small drawing boards or drawing tables, is
independent of a drawing machine and consequently 15 control lever ‘16 is provided which ‘acts on an escapement
consisting substantially of a shifting pawl :17 and a lock
adapted to be used universally. The apparatus can be
ing pawl 18 which are arranged on a common axle 19 of
employed selectively on a drawing board or on any other
the machine 1 ‘for marking measurements and inscriptions.
?at support. Apparatus of a similar character is disclosed
The locking pawl 18, when in position of rest, engages
in US. Patent 1,185,996 to Groby. Further, the appa
in the toothing 9. When the key lever 14 is depressed, the
ratus of the present invention will be operated by the ac
shifting pawl :17 is pressed downwardly through the inter
tuation and pivotal movement of a key-operated ‘type lever
mediary of the lever '16, the locking pawl 18 being at the
of an ordinary platen-type typewriter as disclosed, for
same time pressed out of the toothing 9' by the shifting
example, in the US. Patent 1,725,231 to Underwood.
pawl 17 acting on a pin 20 on the locking pawl. There
The invention provides an apparatus for drawing lines
and marking measurements and inscriptions on drawings, 25 by the shifting pawl 17 engages in the toothing 9.
On the return of the depressed key lever '14, the shifting
comprising a machine for marking measurements and in
pawl 17 is moved back into its position of rest against
scriptions which is similar to a typewriter and slidable on
an abutment 22 on the segment 2 under the in?uence of
a guide rail in relation to a drawing plane, said guide rail
a return spring 21 connected to the shifting pawl 17.
being constructed as a ruler.
The machine for marking measurements and inscrip 30 During this return movement of the shifting pawl 17, the
locking pawl 18 is carried along ‘by a spring 23 extending
tions can be adjusted at any time to any desired position
and at the same time the ruler, which can be provided with
one or more scales for this purpose, can be used for pur
between the pawls 17 and 18, so that it now once more
engages in the toothing 9 displaced by one tooth. Thev
pulling force necessary for producing the shifting move
poses of measuring. Thus subsequent checking of a ?n
ished drawing is considerably facilitated. The ruler has 35 ment is supplied by a spring-loaded pull-cord 24 engag
at least one toothing.
The guide rail which can be used as a ruler can be
easily produced and the toothing cooperating with the es
capement of the machine ‘for marking measurements and
inscriptions can be produced for example together with
the guide rail by casting. By making the guide rail of
synthetic plastic material the shifting noise is reduced
ing on a connecting member 37 on the machine 1 for
marking measurements and inscriptions, and wound up
in a housing 25 carried by the ruler 7. Scales 26 and 27,
preferably with different igraduations, are provided on the
ruler 7.
To ensure perfect guiding of the machine 1 on a draw
ing board 23, a guide roller 31 is provided on a bracket
considerably.
30 near the striking point of the types, which roller 31
provided on the machine for marking measurements and
tion of the types. In front of the guide roller 31 a type
inking device 32 is arranged which is carried by a bracket
presses the drawing paper tightly against the drawing
According to an important ‘feature of the invention the
ruler may have a raceway for at least one guide roller 45 board 28 at this point and thus enables perfect reproduc
inscriptions.
Furthermore at least one guide roller adapted to rest on
the plwe of the drawing near the point where the types
strike can be ?tted on the machine for marking measure
ments and inscriptions.
If three guide rollers are used they form a three-point
support for the machine for marking measurements and
inscriptions, the perfect position of which is thus ensured.
33. This bracket 33 also carries a cover plate 34 facilitat
ing the adjustment of the machine ‘1, which plate 34
50 preferably has a cross-spider registering with the type
striking point and also avoids soiling in the proximity of
‘the striking point. The cover plate 34 has an aperture
through which the type levers strike on the drawing paper.
A holder 35 is provided on the ruler 7 for ?tting on a con
A spring-loaded pull-cord may be attached to the ruler 55 ventional drawing machine.
It is also possible, even when the scale 27 is required
for effecting the feed movement of the machine for mark
for carrying out the measuring, to pull the machine 1 as
ing measurements and inscriptions and the ruler carry a
well as the housing with the pull cord 24 olf the ruler
holder for connecting to a drawing machine of known
and re?t them the other ‘way round; in this case the
construction.
A preferred embodiment of the invention will now be 60 shifting pawl 17 and the locking pawl 118 will cooperate
with the toothing 10.
described by way of example and vwith reference to the
The invention may be embodied in other speci?c forms
accompanying drawing, in which:
without departing from the spirit or essential character
FIG. 1 is a top plan view showing a ruler carrying a
istics thereof. The present embodiment is therefore to be
machine for marking measurements and inscriptions;
FIG. 2 is a section, on a larger scale, taken substantially 65 considered in all respects as illustrative and not restric
tive, the scope of the invention being indicated by the
on line II—II of FIG. 1, with the addition of an escape
ment, and
FIG. 3 is a section, on a larger scale, through a guide
roller, taken on line II-I—III of :FIG. 1 and omitting the
type inking device.
FIG. 1 shows a known machine 1 for marking measure
ments and inscriptions which carries on the end faces of
appended claims rather than 1by the foregoing descrip
tion and all changes which come Within the meaning and
range of equivalency of the claims are therefore intended
0 to be embraced therein.
I claim:
1. Apparatus for applying indicia on drawings on a
3,095,075
a.
drawing board or the like comprising an elongated guide 7
rail having a ?at lower surface for receipt of a drawing
onto ‘which indicia is to be applied, said rail including a
vertical rib including an upwardly opening, longitudinally
extending raceway portion therealong, a printing assembly
reciprocably mounted on said vertical rib, said printing
assembly including a pair of spaced guide Wheels ro
4
4. The structure of claim 1 in which said printing as
sembly includes a plate-like segment from which said
support portion’extends, said‘guide rail including laterally
opening, longitudinal grooves at opposite lateral edges
thereof, said plate-like segment including inwardly di
rected lips guidingly received in said longitudinal grooves.
5. The structure of claim 4 in which said guide rail
includes at least one series of longitudinally spaced teeth
raceway portion, said printing assembly including a lat
opening along one lateral edge thereof, tension means at
erally projecting support portion at one side of said rail, 10 one end of said guide in ‘engagement with said printing
a third guide wheel journaled on said support portion
assembly for normally drawing the printing assembly in
tatably mounted in coplanar relation and received on said
in parallel relation to said pair of guide Wheels providing
traversing relation along said guide rail, and escapement
a three point, anti-friction support for said printing as
means on said printing assembly operatively connected
to said one operating key and said one series of teeth for
sembly, said printing assembly including at least one
operating key and vertically pivotal type lever, said sup 15 permitting tooth-by-tooth movement of said printing as
port portion including inking means adjacent said third
sembly along said guide rail, said one series of ‘teeth
guide wheel for engagement by type on said type lever
being formed above one of said longitudinal grooves and
having spaces therebetween communicating with said one
'2. The structure of claim 1 in which said guide rail
longitudinal groove.
includes at least one series of longitudinally spaced teeth 20
6. The structure of claim 5 in which said guide rail
opening along one lateral edge thereof, tension means at
includes at least one free longitudinal edge having grad
one end of said guide in engagement with said printing
uated measuring indicia therealong for permitting lines to
assembly for normally drawing the printing assembly in
be drawn and measurements to be made, said free edge
' when type indicia is applied.
traversing relation along said guide rail, and escapement
being disposed along the ‘edge of said guiderail opposite
means on said printing assembly operatively connected to 25 said one series of teeth.
said one operating 'key and said one series of teeth for
References Cited in the ?le of this patent
permitting tooth-by-tooth movement of said printing as
sembly along said guide rail.
3. The structure of claim 1 in which said guide rail
includes at least one free longitudinal edge having grad- 30
uated measuring indicia therealong for permitting lines
to be drawn and measurements to be made.
UNITED STATES PATENTS
986,471
1,725,231
2,460,813
Langanke ____________ __ Mar. 14, 1911
Underwood __________ __ Aug. 20, 1929
Dohn ________________ ____ Feb. 8, 1949
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