DE78371C - Control for piston water meter - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 8B: water pipe.

Control for piston water meter.

Patented in the German Empire on May 13, 1894.

The present invention relates to a device on the known control for Cylinder and piston water meters, where the water is distributed alternately the opposite cylinder ends by means of a four-way stopcock or valve takes place, which is changed at the end of each stroke by an overweight. Purpose of Invention is to make this control position a more compulsory one and a lingering one to exclude. This is done by the tilting movement of the valve initiated a little beforehand before the weight overturns. As a result of this starting movement of the piece moving the valve, the action of the weight on the piece is faster and safer; also is the danger the incomplete tax position less great.

On accompanying drawings is

Fig. Ι a perspective view of an embodiment the controller;

Fig. 2 and 3 are perpendicular cross-sectional views of a second embodiment;

Fig. 4 is a side and side elevation, partly in section

Fig. 5 is the corresponding end view of a third embodiment.

The shaft A of the attack weight is rotated alternately in opposite directions by a toothed wheel B (FIGS. 4 and 5) firmly attached to the shaft, in which a toothed rack C engages, which is moved by the piston; this toothed wheel and rack are only shown in FIGS. 4 and 5.

In the embodiment according to FIG. 1, the overflow weight D is loosely attached to the shaft A and is actuated at the end of the piston stroke by an arm E which is firmly seated on the shaft. The weight D acts during the attack on ■ a catch F of a piece F ₁ , which is loosely attached to the shaft A and has an arc of conical teeth which are in engagement with a conical tooth piece G on the spindle G _{1 of} the distribution valve (not shown) . According to the invention, a hub H with a lug J, similar to the cock of an ordinary coupling, is also attached to the shaft A; This lug J acts after it has been taken around by the shaft A and the end of a piston stroke has almost been reached on the piece F ₁ , which is actuated by the overhead weight, and initiates its movement a little before the overhead weight hits this piece.

The piece F ₁ can be actuated directly by the catch J; in many cases, however, it is advantageous or more convenient to convey the movement through an intermediate piece K , which is loosely attached to the shaft A ; this intermediate piece initially moves a certain distance and only then acts on the piece Jp ₁ .

The description of the embodiment according to FIG. 1 also fits the embodiment shown in FIGS. 2 and 3, with the exception, however, that instead of the hub H, an extension E _{1 of} the lever arm E is used in order, by means of a similar intermediate piece K, to catch F _{2 of} the piece F ₁ to act.

Claims (1)

In the embodiment according to FIGS. 4 and 5, receives. the spindle G _{1 of} the distribution valve G _{2 has} two arms L, one of which carries the piece F _1. On the wheel B, which is attached to the shaft A , lever arms E are attached which, when the toothed wheel rotates through the rack C, rotate the attack weight D alternately in one direction and the other. One of the lever arms E also has a catch E ₁ , which acts on the piece F ₁ and thereby on the spindle G _{1 of} the distribution _{valve G 2} , before the overflow weight D expresses its effect. The weight that falls over acts through a lug D ₁ on the valve spindle arms L and thereby triggers the control of the valve G ₂ . Patεντ claim: Control for piston water meter, characterized in that the movement of the distribution valve (GJ is initiated indirectly by lugs, stop arms or the like on the shaft (A) driven by the piston of the water meter, before the valve is controlled by an overhead weight (D) . 1 sheet of drawings.