DE121569C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

M 121569 CLASS 14 e.

Round slide control.

The object of the invention is to improve the drive for the final slide with rotary valve controls. In the accompanying drawings shows

Fig. Ι a longitudinal section in its left half and in its right half an exterior view of a steam cylinder, which with a Round slide control with closing slide and the improved drive for the closing slide is provided;

Fig. 2 shows a cross section through the same cylinder in the axis of the control slide;

Fig. 3 shows the positions of the control slide and the final slide relative to one another at the moment of inflow;

Figure 4 is a cross section through the control slide and the closing slide on a larger scale;

Fig. 5 shows schematically the assembly of the organs through which the drive shaft and the controller act on the final slide, and

Fig. 6 and η show some details of these organs on a larger scale.

The control slide a, which is provided with the inlet opening b , is arranged on the cylinder in the same way as in the Corlifs machines; it is displaced in front of the inlet opening c of the cylinder and, by means of the crank d and the rod e , receives its reciprocating movement, which is caused by the end points of the arch

is limited. The Abschlufsschieber / ?, which moves α in the control slide, when the control slide moves from G to f, by a stop on the slider i α taken. It is wedged onto a rod j which in turn is fastened in the middle of a crank disk k to which a tie rod m is articulated. This rod is connected to a sleeve η acting as a piston, which presses a spring q against the cover ο of the air cylinder ρ when it goes upwards. The crank disk k has an incision s which can engage with the tooth r of a ratchet lever t . A stop u, which is arranged on a rod ν , to which a reciprocating movement is communicated, has the purpose of also moving the lever t to and fro and consequently to bring the tooth r out of its engagement with the incision s . The stop u is adjustable on the rod ν.

The device is designed so that when the control slide a, which takes the closing slide h with the aid of the stop i , has reached /, the incision s of the crank disk k has come into engagement with the tooth r of the ratchet lever if opposite and with the same. When the control slide goes back to g , the final slide h remains in its position indicated in FIG. 3 and. the inflow begins as soon as the opening b of the opening c

Claims (1)

of the cylinder faces. But at the moment when the expansion is to begin, the stop u of the rod ν comes into contact with the lever t, which then brings the tooth r out of engagement with the incision s of the crank disk k. The rod m then immediately under the action of the spring q leads the crank disk k back to its starting position and the closing slide h hits the stop i and closes the opening b again. The reciprocating motion of the rod ν is controlled by the drive shaft in the following manner transfer: The drive shaft transmits a constant rotational movement to a bevel gear \ by means of the angular gears w and χ and the shaft y. This bevel gear \ engages which transfers by another with it is firmly connected wheel 2 through the mediation of a bevel gear 4, the movements on a bevel gear with a bevel gear 3 ι. The wheels 1 and 4 run loose, while the wheel 3 is wedged on its axis 5. This axis has the same rotational speed as the drive shaft and carries a crank disk 6 which actuates a pull rod 7 which is articulated on a T-shaped lever 8 which is movable about the axis 9. With the lever 8, the two rods ν are articulated. The rotary movement communicated by the drive shaft of the shaft 5 is converted into a reciprocating movement by means of the crank 6 and the rod 7, which is transmitted to the rods ν by the lever 8. With the help of the stop u, which is adjustable on the rod ν , the machine can be run with the appropriate expansion ratio. permit. The change in the steam inflow through the controller is made by the following device achieved: One end of the axle 10 of the loosely running wheel 4 is firmly connected to a toothed sector 11, while the other end, which forms a sleeve 12, can rotate freely on the axle 5. The toothed sector 11 is in engagement with the rack 13, the rod 14 of which is connected to the sleeve 15 of the regulator in such a way that it can follow the displacements which are communicated to the sleeve by the regulator. Each displacement of the rod 14 then corresponds to a rotation of the axis ίο of the bevel gear 4 by means of the sleeve 12 around the shaft 5, and this results in the relative displacement of the point of application of the rod 7 on the disk 6 in relation to the position of the crank of the drive shaft . If as a result the speed of the machine changes, the crank disk k is disengaged at different times; this results in a change in the duration of the steam inflow. Patenτ claim: Round slide control with expansion slide arranged concentrically in the basic slide, characterized in that the expansion slide (h), which is carried along by a stop (i) of the basic slide (a) and is held during the return movement of the latter, is caused by a stop (u) set in a reciprocating motion is released and returned to the initial position by the action of a spring (q) , the release being effected sooner or later, depending on the speed of the machine, from the controller by means of a suitable transmission for changing the filling. 1 sheet of drawings.