DE1122C - Mechanism for the automatic change of the expansion influenced by the regulator in the MEYER valve control. - Google Patents

Description

1877.

Class 14.

A. PELISSIER in HANAU.

Mechanism for the automatic change of the expansion influenced by the regulator with Meyer’s slide control.

Patented in the German Empire on October 16, 1877.

The purpose of the present mechanism is to reduce the expansion, when using Meyer’s expansion control, to be adjusted automatically by the regulator, in the following way:

The * expansion slide rod is provided within the valve body with a pierced head k , through which the pin ζ of a disk S passes, in which two spiral-shaped slots ss are incorporated, in which the pins tt located on the two expansion slides engage well, so that When the plate 5 is rotated, the two expansion slides, which are guided in the distribution slide, approach one another or move away from one another, depending on whether the rotation is to the left or to the right. The extension of the pin ζ carries, firmly wedged on, a lever A, on the pin c of which a hardened steel roller r is attached, which engages in a square opening recessed in the bolt R , which is fixed to the valve body cover and which is guided in a straight line on rollers, so that, indeed, that the roller moves back and forth within this opening and at the end of its movement just touches its edges. That. One end of the bolt carries a pin d, which is gripped by the elongated pierced eye of a lever m , which is firmly seated on an axis α , which comes out through a stuffing box from the cap cast on the upper wall of the valve body, and between points , easily movable, is held, on the end of which a second lever η is wedged. On the side facing the regulator, a block JB is screwed onto the valve body, in which an axis is mounted, which in its center and firmly connected to it carries a non-circular disc C which, as soon as it is opened by means of the lever / through the regulator is rotated, the surrounding frame / and the lever connected to this by the rod 'b pushes back and forth. If one now imagines the regulator and all parts in their middle position, as shown in the drawing, the lever h. have taken up a vertical position, which will be the role seated on the pin, to move freely to and fro in the opening in the bolt R; The disk "S will also be turned so that the pins of the expansion slide are guided from the center of the slots, whereby a very specific distance of the slide plates from one another and a certain degree of expansion corresponding to this plate position is required. As long as the regulator remains in its middle position, nothing is changed in this state. But if the muff of the regulator lowers as a result of the slower movement of the machine, the non-circular disc C is turned to the right, and as a result pushes the lever η also to the right through the frame surrounding it, whereby the bolt R moves a certain distance to the left will. When the expansion slide rod moves back and forth, the roller r is pressed against the bolt on one side before the rod has completed its stroke, and the lever carrying the roller is thus forced to move around a part of the Hubes corresponding way to turn to the left. In this rotation, however, the disk S takes part, as a result of which the two slide plates are brought closer to one another, as a result of which the steam flows in for a longer period, that is to say, the cylinder is filled to a greater extent. This game will be repeated as long as the regulator's muff remains in a sinking motion and until a new state of rest has entered; on the other hand, the opposite movement of the individual parts and a pushing apart of the plates, that is, a shorter inflow of steam, will take place when the muff of the regulator begins to rise as a result of the accelerated movement of the machine.

Patent claim: The mechanism explained by drawing and description.

1 sheet of drawings.