HYDRAULIC VALVE AND VALVE MECHANISM

VALVE HYDRAULIQUE ET MECANISME DE VALVE

Claims

Claim lst. A valve chamber, having an adjustable partition con¬nected to the valve, and arranged to cut off a portion of the valve-chamber from the inlet port, which is supplied with water under pressure, in combination with a valve-chamber connected by independent passage-ways to the main valve-chamber oa either side of the adjustable partition, and provided with a valve by which communication between the two passage-ways may be opened and closed. thereby varying the pressure on the adjustable partition, so as to operate the valve it is connected to, substantially as and for the purpose specified. 2nd The supply-chamber D, having a passage ay leading into the cylinder II, protected by the valve B, which is connected to an adjustable partition a, designed to form a division in the chamber D, the passage-ways 5, land F, arranged as described, to connect the two divisions of the chamber D to the chamber of the valve A, as described, in combination with the valve C seated on the escape pipe I in the chamber E, and connected to the adjustable partition a, which divides the chamber E, as specified, an d the passage¬way F1 connecting one division of the chamber E with the chamber of the valve A, the passage-ways F and Ft being located in the chamber of the valve A, substantially as and for the purpose hereinbefore explained. 3rd. A passage-way located between the supply and discharge valve-chamber, and having two cheek-valves, the one near the discharge valve-chamber being set so that it remains closed when the water pressure from the supply is within the supply valve-chamber, but opens by the back pressure from the cylinder caused by the weight of the car, the moment that the water-pressure in the supply chamber is removed, thereby opening a passage-way between the lower portion of the discharge valve-chamber and the top portion of both the supply and discharge valve-chamber, so that the pressure of the water from the hydraulic cylinder shall instantly close the valves, substantially as and for the purpose specified. 4th The valve-chambers D and E, provided with valves B and C, each connected to an adjustable partition a, dividing its respective chamber passage ways F and F1, designed to connect the two chambers D and E on one side of their partitions, and the passage-way b arranged to connect the other side, in combination with the check-valves e and d located in the passage-way 5, and so arranged in connection with their respective seats that an excess of pressure in the chamber E will open the valve e and close the valve d, and excess of pressure in the chamber D reverses this action, so that when communication is opened between the chamber E and passage-way f, communication between the passage-way and chamber D is closed, substantially as and for the purpose specified. 5th The double-seated valve-chamber M, provided with passage-ways leading to the valve-chambers D and E and cylinder H, in combination with the double-faced valve N fixed to the valve-spindle 0, and designed to be acted upon by some moving part, so that the valve shall cut off communication between the cylinder H and supply-chamber D when the car reaches the top of the building, leaving the passage between the cylinder and the discharge-chambers open, so that the valve B remains under the control of the operator for the purpose of lowering the elevator, or to cut off communication between the discharge-chamber E and cylinder H, when the car reaches the bottom of the building, in which position the passage-way between the cylinder and supply-chamber is left open, and the valve A remains under the control of the operator for the purpose of raising the elevator, substantially as and for the purpose specified. 6th. The double-seated valve-cham¬ber M, provided with passage-ways leading to the valve-chambers D and E, and cylinder H, in combination with the double-faced valve N fixed to the valve-spindle 0, and designed to be acted upon by some moving part, as specified, and mechanism to hold the valve N in the centre of the centre of the chamber M, when not otherwise acted upon, substantially as and for the purpose specified. 7th The rock-shaft P connected to the spindle 0, and provided with an arm Q, arranged to engage with the sleeve U placed on the guide-rod R, as specified, in combination with the sleeve V adjustably connected to the sleeve U, and arranged to be acted upon by the cross-head S, substantially as and for the purpose specified.