DE1259589B - Gear for point recorder - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

GOId

German KL: 42 d- 3/45

Number: 1259 589

File number: M 56499IX b / 42 d

Filing date: April 16, 1963

Opening day: January 25, 1968

The invention relates to a gear for point recorders, in which by striking a drop bracket a marking is made on a tracing strip on a measuring tool pointer at time intervals is using a shaft that can be connected to a drive source for the feed of the registration strip or for the control of the drop bracket, which is permanently connected to the output shaft assigned to it is coupled.

It is common practice for point recorders to be driven either by a synchronous motor or by a to get by a spring mechanism. For this purpose devices for connection to a synchronous motor were developed and others built for connection to a spring mechanism. Two types of devices therefore had to be in stock be held, and the buyer had to make the choice of the drive before buying the device. this led to the difficulty that in laboratories where there is no mains connection in some places and portable devices are used, two types of point recorder always had to be available.

The suggestion was probably made for point recorders, for the paper feed and for the Control of the drop bar to use a self-starting synchronous motor, but this could The device does not eliminate the difficulties outlined above in the absence of a mains connection.

It is also known to use a clockwork and an electric motor in a point recorder, which serves as a winding motor for the clockwork.

Similar drive sources were also used in a different type of recorder in such a way that that they were only switched on in a respectively assigned registration speed range.

Finally, a drive mechanism for recording instruments has become known in which the paper drive can be switched to two different running speeds, for which a common Spring drive is provided. The drive shaft is permanently connected via a transmission gear with the spring drive and a detachable clutch and a second gear with a clockwork connectable, which slows down the speed imparted to the drive shaft by the spring drive.

The object of the invention is to create a universal device which can be connected to both a synchronous motor and a clockwork. Furthermore there should also be the possibility of the paper feed from a clockwork and the control of the To get the drop bracket from a synchronous motor, gear for point recorder

Applicant:

METRAWATT Aktiengesellschaft,

Electrical measuring equipment factory,

8500 Nuremberg, Schoppershofstr. 50-54;

Goerz Electro Gesellschaft m. B. H., Vienna

Representative:

Dr. W. Meyer, lawyer,

8500 Nuremberg, Prinzregentenufer 13

Named as inventor:
Josef Dienstl,
Franz Frenzel, Vienna

Claimed priority:

Austria from May 21, 1962 (A 4147/62)

to achieve that the advance of the paper strip is brought depending on the lapse of time, while the control of the drop bracket is unaffected remains, so that either a curve or only individual points in larger intervals can be produced.

This task could not be solved with the known devices. To make this possible, will a transmission of the type mentioned is proposed in which, according to the invention, the drive shaft can be connected to a spring mechanism, preferably a clock mechanism, for advancing the registration strip and the shaft intended for the control of the drop bracket, driven by a motor and axially displaceable can be fixed in three positions, one of which is independent of the drive shaft for the recording strip the drive of the motor of the output shaft for the control of the drop bracket mediates the others a connection of the motor both to the said output shaft and to the drive shaft for creates the recording strip, while in the third position the sliding drive shaft of the motor detached is connected to the drive shaft of the registration strip, in the first and last position the spring mechanism is connected to the drive shaft and in the second position with the aid an additional handle is switched off.

709 720/224

The invention is limited to a combination of all the features characterized in claim 1.

The drawing shows an embodiment of the transmission according to the invention in F i g. 1 in side view and in FIG. 2 in plan view.

The selected gear is a thrust change gear, which can be used for three speeds and three drive positions and has several sets of mutually adjustable gears. These sit firmly on axles, which in turn are rotatably mounted between plates 1, 2. In the present exemplary embodiment, six axles 3 to 8 lying parallel to one another are provided, of which axles S and 7 are longitudinally displaceable and are provided with an axle stub 9 or 10 protruding over plate 1. Each of the stub axles 9 and 10 has a shift lever 14 or IS which engages in notches 11, 11 ', 11 "or 12, 12', 12" of a shift gate 13.

The axis 7 penetrates the plate 2 and is at its end protruding from this with a coupling 16, which connects the axis 7 to the drive motor 17 when the lever 15 is in a certain position.

The axes 3, 4, 6 and 8 can be rotated in the plates 1 and 2, but cannot be displaced. the Axis 6 has an axle stub that protrudes from the plate 1 and can be connected to an external drive 18 is provided and carries gears 19, 20, of which the former depends on the position of the lever 15 selectively engage with the gears 21, 22 or in the gap 23 between the two can stand. On the displaceable axis 5, different sized gears 24, 25 and 26, each according to the translation set by the shift lever 14 with one of the mating gears 27, 28 or 29 of the axis 4 engage. The gear 29 meshes with the gear 30 of the axis 3 on the also one leading, for example, to the transport roller of the recording strip of a point recorder Gear 31 is seated. The counterpart to the axis 3 is the axis 8, which is connected to the gear wheel 22 meshing intermediate gear 32 is provided, which in connection with the selected point recorder the control of the drop handle operated.

The two shift levers 14, 15 are connected by a tension spring 33, which has the tendency to Push the lever into notches 11, 11 ', 11 "or 12, 12', 12".

The transmission described works in the following way: In the setting shown, in which the Lever 15 engages in the latch 12, the axis 7 is released from the drive motor 17 and both with the Axis 6 and also with the axis 8 via the gears 21 and 22 are drivingly connected. At this The drive for the transport roller as well as for the control of the drop bracket takes place from an external drive source via the stub axle 18 and the axle 6.

If the lever 15 is moved into the detent 12 ', the gear 21 disengages from the gear 19, whereby the connection between axes 6 and 7 is interrupted. At the same time the Coupling 16 the axle 7 to the motor 17. In this setting, the motor 17 drives over the Axes 7 and 8 control the drop bar, and independently of this, the external drive source drives Connect the transport roller via the stub axle IS and axles 6, 5, 4 and 3.

In the third setting, when the lever 15 falls into the detent 12 ", the axis remains? With the Motor 17 is coupled, and the gear 22, which continues to mesh with the intermediate gear 32, enters Engagement with the gear 19, whereby both the transport roller via the axis 3 and the control of the drop bracket is connected to the drive motor 17 via the axis 8. With this circuit is the stub axle 18 by releasing a coupling, not shown, from the external drive source separated.

For each of the three switching stages described, three different speeds can be set by means of the lever 14 can be set for the paper feed.

A clockwork, a crank, for example, can be used as the external drive source for the stub axle or the like. Can be used.

Claims (2)

Patent claims: 1. Gear for point recorders, in which by striking a drop bracket on one Measuring tool made a mark on a tracing strip at time intervals using a shaft that can be connected to its own drive source for each the feed of the registration strip or for the control of the drop bracket, which is assigned to it Output shaft is coupled, thereby characterized in that the drive shaft (6) for the advance of the recording strip on a Federwerkj is preferably connectable to a clockwork and for controlling the drop bracket certain shaft (7) driven by a motor (17) and axially displaceable in three Positions can be fixed, one of which is independent of the drive shaft (6) for the recording strip the drive of the motor (17) of the output shaft (8) for the control of the drop bracket mediates, the other a connection of the motor (17) both to the said output shaft (8) as well as to the drive shaft (6) for the recording strips, while in the third position the displaceable drive shaft (7) detached from the motor (17) to the drive shaft (6) of the registration strip is connected, the spring mechanism to the drive shaft in the first and last position (6) connected and in the second position with the help of an additional Handle is switched off, 2. Transmission according to claim 1, characterized in that a shift gate (13) with two groups of three notches facing each other and connected to each other (11, 11 ', 11 "or 12,12 ', 12") for the optional insertion of a shift lever (14, 15) for those with the Motor (17) connectable shaft (7) and a shaft (7) that can be connected to the spring mechanism in the power flow between the motor (17) Shaft (6) and its associated output shaft (3) displaceably arranged transmission shaft (5) is provided, said Lever (14,15) are connected to one another by a tension spring (33).