DE558C - Dynamometer - Google Patents

Description

1877.

Class 42.

SIGMUND SCHUCKERT in NUREMBERG. Dynamometer.

Patented in the German Empire on September 28, 1877.

This dynamometer is used to measure the power requirement of a. Machine; the size of the Force is determined by the length of the extension of spiral springs (as with earlier dynamometers) determined and from this with the help of the number of revolutions and the pulley circumference of the Power requirement calculated. The subject matter to which this patent relates is to arrange how the length of the extension of the spiral springs is brought to a reading for the observer and disintegrates in 2 parts, either: direct reading on an appropriately divided scale, or: automatic recording on paper.

i. Direct reading on the scale: the belt pulley α connected to the motor is fixed on the axis b. The roller a ¹ , with which the machine to be measured is connected, is loose on the axis and is carried along by means of the spiral springs c, which serve as a coupling for both rollers. The greater the applied force, the longer the spiral springs are pulled out and at the same time cause a rotation of the roller a ¹ to α , d is a helical segment firmly connected to the roller α ^l , which acts on the lever arm e as a result of the rotation, so that it moves around its pivot point / ( firmly connected to the axis by g ) in the direction indicated by the arrow. Ax b , which is hollow at this end, carries a rod h which, by the above movement of the. Lever e is pushed outwards, and when the helical segment goes back, it is also pushed back again by a spiral spring, i is a friction roller that guides the lever in the relevant axis cutout. k is the scale, which is divided after, prior attachment of weights to the periphery of the roles. / m is the well-known device for counting the revolutions, which can be triggered at will by means of the lever and then switched on.

2. The device for automatic recording can be seen from Figures 4, 5 and 6: The carrier holds the paper rolls 2, 3, furthermore the horseshoe-shaped guide rod 4 and finally the counting wheel M. The latter brings the roll 3 into motion as it rotates by pressing it in its teeth into the end face of the roll, which is made of rubber at the point in question, and thereby winds up the paper tape attached to this roll. The roll 2 carries the paper in stock, which is maintained by the weight 5 in the correct tension. . 6 is a sleeve which carries the pen 7 and is pushed away from the rod h by a small plate 8 attached to it; when h decreases, the pressure of the around the. horseshoe-shaped chopsticks coiled coil spring back the sleeve back. This creates a graphic representation of the excerpt and on the running paper strip. given the fluctuations of the coil springs c . The pen 9 is used to record the zero line in which it is determined by means of its clamping screw. The whole apparatus can also be triggered and switched on at will if it is moved accordingly around the pivot point 11 by means of the lever 10. The clamping screw 12 (Fig. 6) is used for fastening in any position.

The sketch (Fig. 7) shows a different arrangement of the rollers a, a ', which makes it possible that none of the belt rollers need to be shifted when measuring. With α the gear i "is firmly connected, which engages in the gear 2, with which the roller a ^{l is} also coupled by spiral springs, as in the above case α with α \ everything else behaves as above.

1 sheet of drawings.