Files

Download

Download Full Text (327 KB)

Patent Number

181,263

Application Date

June 7, 1876

Issue Date

August 22, 1876

Publication Date

8-22-1876

Country of Publication

United States

Description

The objects of my invention are, first, to utilize, for operating freight or passenger elevators, the power derived from the difference in the hydraulic pressure between the high and low service-pipes in city supplies, whereby there is no waste or consumption of water- i.e., the water is taken from the high service-pipes, using the power derived therefrom; it is then discharged by forcing it into the low service-pipes, from which it is available for use; second, to provide a ready and convenient means for efficiently operating the action of the vale; third, by a peculiar construction of the operating parts of the valve or valves, to give to the operator complete control of the car, and insure an easy, uniform motion to the elevator when the water is let on or shut off; fourth, by a peculiar construction of the vale, to obtain a perforated waterport, so the cup-leathers will pass it smoothly.

Keywords

elevator, elevators, passenger elevators, hydraulics, hydraulic elevator, hydraulic elevator.

Disciplines

Engineering | Mechanical Engineering

Language

English

Format

application/pdf

Type

article

Improvement in Hydraulic Elevators


Share

COinS