DE32712C - Drive device for small working machines - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 46: Air and gas engines. ¹

Patented in the German Empire on December 17, 1884.

Fig. Ι is the view of such a machine from behind, Fig. 2 the drive of the same in Cross section, seen from the side, and Fig. 3 is a cross section taken with the flywheel connected parts - showing parts used to start and stop the machine; Fig 4 are details of the cranked lever.

The table b of the sewing machine B rests on the footboard a by means of the two side parts c. To the. one, to the right side of the person sitting on the seat side part c , the gear train C is mounted inside the plate C ¹ attached to c.

The same is set by the wave of s ^l _r Be in motion. In the middle of it sits the belt pulley s and on its outer part the ratchet wheel s ² . On one side of the latter, the gear s ³ sits loosely on the shaft s ¹ . The same carries on its surface facing the ratchet wheel close to the circumference a shift hook which is in engagement with the teeth of the ratchet wheel s ^2. The wheel s ^s engages in the drive s * of a second shaft, which also carries ^{a gear s 5.} The latter engages in a drive s ^{6 of} a third shaft on which the gear s ¹ sits.

The latter wheel is in engagement with the wheel s ^{8, which is} seated on a fourth shaft. This shaft goes through the side part c and carries at its inner end a gear wheel s ⁹ which is in engagement with the wheel s ^w seated on the flywheel shaft. The flywheel s ¹¹ is provided with a cord for receiving the main shaft of the sewing machine B by means of the cord roller s ^is driving cord s ¹² .

The drive is effected by a belt D, one end of which is attached to the stem of the seat F. The same is passed over the rollers d ² d ^l and d after the roller s and attached to its circumference with its other end. The stem of the seat F is inserted into your: hollow stand E ; in the latter, the rollers d ^l and d ² are also arranged. A spiral spring G wound around the shaft s ^{1 is} attached to one side of the belt pulley s , the other end of which is attached to the side part c. The weight of the person resting on the seat F presses it down, the belt D is tightened and the roller s with the shaft s ^l against the tension of the spiral spring. G pulled in the lengthwise direction of the belt. Due to the gear ratio C, the sewing machine is set in motion for a long time corresponding to the path of the descending seat. After the seat has reached the lowest position, the person occupying it rises; as a result, the shaft s \ is rotated in the opposite direction by the spring G , pulling the seat F back to its highest position. With this rotation of the shaft, the teeth of the ratchet wheel slip s' ² at the switch hook of the wheel ^B s without That the latter and with it any of the other wheels to rotate.

The impeller S , the blades of which can be adjusted, is attached to the main shaft of the machine B. Depending on the weight of the

Claims (1)

When working, the wings are placed in such a way that they more or less resist the air oppose, so reduce the rotational speed of the machine shaft or enlarge. In the housing of the stand E there is provided a rotatable step lever H , one end of which is connected to the lower part of the stem of the seat, while the stepping end of this lever is in the region of the foot of the person occupying the seat. By stepping on this end of the lever, the latter transfers part of its weight from the seat to this lever, thereby causing the seat to return to its initial position. In Figs. 3 and 4 that mechanism is shown by which the person sitting on the seat is able to start or stop the machine. It consists of an inner at the side of a side Theiles c of the machine rotatably montirten, two-armed, cranked lever /, whose lower leg is connected almost horizontally, and by the articulated rod J ¹ with the foot pedal J ^2, while the other upwardly directed leg with its upper, specially arranged end in contact with the circumference of the flywheel s ¹¹ is. This arm is so bent that it does not come into contact with the shaft s ^{1 when it moves.} The other arm is pulled upward by a spring J. At the upper end of the upwardly directed arm, FIG. 4, a sleeve e is pushed over the arm and fastened to it in such a way that it can move lengthways. A piston f made of rubber or the like is fastened in the upper end of said sleeve. A spiral spring g is enclosed in the sleeve between this piston and the upper end of the arm, whereby this sleeve with the rubber piston is pressed outwards. If the person sitting in front of the machine wants to start the machine, the same presses the footstep J ² down and thereby prefers the upright arm of the lever / in the direction of the arrow along and against the lower part of the circumference of the flywheel, causing it Wheel rotates. Due to the displacement of the sleeve and the resilient effect on the piston f , the latter can follow the curvature of the wheel circumference and around. stay in touch with it longer. The lever remains in the assumed position with the foot lever J ² / depressed as long as the machine is in operation. However, if you want to stop the machine, you relieve the foot pedal J ² , whereby the spring J comes into effect and the lever / in the position shown in Fig. 3 prefst against the circumference of the flywheel s ¹¹ , which comes to a standstill. PATENτ claim: The Gesammtanordhung the through FIG. Actuator I ₁ shown to 4 of a sewing or other small engine, which is characterizes by the seat F DAF by the belt D with the tensioned by the spring G, and the machine shaft driving shaft s ^l in the manner connected is that the downward movement of the seat caused by the body weight of the seated person drives the shaft in one direction, whereas when the seat is unloaded the spring causes the shaft to rotate in the opposite direction and lift the seat. For this purpose ι sheet of drawings.