Objectives | Figures | Description | Claims | References |
Patented Mar. 6, 1951 |
2,544,426 |
Curt Herzstark, Mauren, Liechtenstein, assignor
to "Contina" Büro- und Rechenmachinenfabrik
A. G., Mauren, Liechtenstein, a firm
Application April 29, 1949, Serial No. 90,342
In Austria May 15, 1946
2 Claims. (Cl. 235-145)
In the known types of calculating machines
with slidebar setting and visible setting control
register, the setting mechanism and the control
mechanism constitute two devices entirely separate
from each other but mutually connected by
special coupling members.
The object of the present invention is to simplify
the setting mechanism and control mechanism to the greatest possible
extent as compared
with previously known types, and to accommodate
same in the smallest conceivable space such as is
available, for instance, in a pocket-size calculating
machine. To this end the setting members
for the setting wheels are, according to the invention,
mounted in such a way on the shafts
carrying the control numeral rollers as to be
axially movable and are coupled to said shafts.
Accordingly, when the setting members are operated,
the control numeral rollers are positively
rotated, so that the figure set is visible in the window
of the setting control register.
Objectives | Figures | Description | Claims | References |
The drawing shows a typical embodiment of the device in accordance with the invention, in which drawing Fig. 1 shows the combined setting and control mechanism of one column of the calculating machine in considerably enlarged vertical section, Fig. 2 an appurtenant front elevation and Fig. 3 an elevation of a detail.
Objectives | Figures | Description | Claims | References |
In the retaining plates 1 of the body
of the calculating machine, the shafts 3 of the control
mechanism and, behind them, the shafts 4 of the
setting mechanism are mounted in the vicinity
of the wall 2 of the case; only one of each of said
shafts is illustrated in the drawing. The control
numeral roller 5 is rigidly mounted on shaft 3, on
which shaft a setting member is so mounted as to
be longitudinally slidable. In the case here
depicted, said setting member is a slide-bar 6 which
projects on one side, by a handle or knob 7, from
a longitudinal slot 8 on the wall 2 of the case, and
is provided on its other side with a projection 9.
Said projection 9 is provided
(Figs. 1
and 3 with
two bifurcations 9a, 9b offset
at an angle of 90o
to each other. The slide-bar 6 is coupled, in the
axial direction of motion, to the setting wheel 10
of the relevant column by means of the bifurcation 9a,
whilst said slide-bar laterally embraces
the bearing 10a of said setting wheel by means of
recesses 9b provided in the outer ends of the
bifurcation 9a. As a result of this lateral embracing
of the setting wheel the slide-bar 6 is held in
a simple manner, without the use of special guide means,
against rotary movement. The setting
wheel 10 is fixedly mounted on the bearing 10a
which latter is so keyed to shaft 4 as to be slidable
in the lengthwise direction of said shaft, and is
driven, when a numeral has been set, by the
driving member, for example a stepped roller 11.
The slide-bar 6 is retained in the set position by
a retaining device. Said retaining device preferably
comprises a ball 12 mounted in the hollow
knob 7 and loaded by a compression spring 13 also
accommodated, in said knob. In the drawing the
slide-bar 6 is shown in the zero position.
In this position, the ball 12 engages in a recess
14 in the shaft 3 and by the action of the spring 13
retains the slide-bar 6 with sufficient firmness to
ensure that said slide-bar can only be moved by
overcoming the pressure of said spring.
The slide-bar 6 is positively connected to the
shaft 3. To this end the shaft 3 is provided with
a spiral groove 15 into which projects a radial pin
16 of the slide-bar 6. Along a curve corresponding
to the spiral groove 15 are provided, in addition
to the recess 14 corresponding to the zero
position of the push-bar, nine further recesses 14
the for the Figures 1-9 which may possibly be set.
The longitudinal slot 8 serves at the same time
as a sight hole for the control numeral roller 5
and is of such width that only one figure on the
roller 5 is visible.
In the device described, when the slide-bar 6 is
displaced, the ten-figure numeral roller 5 is
rotated according to the figure operated, so that the
combined figure set can be readily seen in the
sight holes and, if it has been wrongly set,
corrected before being transferred to the counting
mechanism.
To enable the entire unit, i.e., the shaft 3, the
push-bar 6, the retaining device 12, 13 and the
numeral roller 5 to be laterally removed integrally
from the machine or integrally placed therein
without it being necessary to unscrew or otherwise move
the retaining plates 1, the shaft 3 is
mounted on centres 17 constituted by the free
ends of screws 18 fitting in threaded holes in said plates 1.
With this system of mounting, the shaft
3 with the setting wheel 10 may also, if required,
be finely adjusted to the driving member 11.
Objectives | Figures | Description | Claims | References |
I claim:
1. In a calculating machine, a setting mechanism
with visible setting control register setting
members for setting wheels, the said setting
members being so mounted on shafts carrying
a control numeral roller, as to be axially slidable,
the said setting members being coupled to said
shafts, so that when the setting members are operated
the control numeral rollers are simultaneously
and correspondingly set, the setting
members consisting of slidebars provided with
lateral extensions projecting toward the center
axis of the machine and having two bifurcations,
said bifurcations being provided with a recess at
their outer ends, said extensions being coupled
through said bifurcations in the axial direction
of movement of the setting wheels, while slidable
bearings on which the setting wheels are
fixed, are received by the recess of said bifurcations
whereby said setting members are held against rotation.
2. In a calculating machine, a casing having
a wall provided with straight longitudinally extending
slots, a setting mechanism with visible
setting control register setting members for setting
wheels, rotatable shafts on which said setting members
are slidably and rotatably mounted, handles on said
setting members and extending through said slots, a control
numeral roller
fixedly mounted on each of said shafts, a spiral
groove in each shaft and pins on said setting
members projecting into said grooves, and a
plurality of recesses extending along said spiral
grooves in said shafts and engageable by a yieldable
member carried by said setting member,
whereby upon slidable adjustment of said setting
members by means of said handles, said control
numeral rollers are simultaneously rotated and
set, the setting members consisting of slidebars
provided with lateral extensions projecting in
the opposite direction from said handles and
having two bifurcations, said bifurcations being
provided with a recess at their outer ends, said
extensions being coupled through said bifurcations
in the axial direction of movement of the
setting wheels, while slidable bearings on which
the setting wheels are fixed are received by the recess
of said bifurcations, whereby said setting members
are held against rotation.
CURT HERZSTARK
Objectives | Figures | Description | Claims | References |
UNITED STATES PATENTS | ||||
Number | Name | Date | ||
938,790 | Rein | Nov. 2, 1909 | ||
1,011,617 | Hamann | Dec. 12, 1911 | ||
2,482,935 | Rast | Sept. 27, 1949 | ||
FOREIGN PATENTS | ||||
Number | Country | Date | ||
256,315 | Germany | Feb. 5, 1913 |
Andries de Man 5/15/1997