Hydraulic system for laundry flatwork ironer

Details Hydraulic system for laundry flatwork ironer Hydraulic system for laundry flatwork ironer

1988-10-11

1990-11-13

Look, Edward K.

Textiles: ironing or smoothing

Smoothing machines

Roller presser

38 52, 60488, 92 131, D06F 6300

Patent

active

049692810

ABSTRACT:
A hydraulic system for operating the rollers and one or more steam chests in a laundry flatwork ironer. A two-way, variable delivery, high pressure, main pump operates a hydraulic motor driving the ironer rollers. A one-way, fixed delivery, charge pump keeps the hydraulic circuit between the main pump and the hydraulic motor fully charged. The charge pump also powers a hydraulic control circuit for the main pump and controls the operation of steam chest lift cylinders. The control circuit for the main pump has a positioning cylinder and a speed control cylinder which jointly control the direction and delivery rate of the main pump, thereby controlling the direction and speed of the ironer rollers. The control circuit has a solenoid valve for stopping the hydraulic motor in an emergency and a solenoid valve for selectively controlling the speed of the chest lift cylinders.

REFERENCES:
patent: 3371483 (1968-03-01), Gray et al.
patent: 3484966 (1969-12-01), Gruner et al.
patent: 3992883 (1976-11-01), Cope
patent: 3995425 (1976-12-01), Wittren
patent: 4420935 (1983-12-01), Kobald et al.
patent: 4488365 (1984-12-01), Hord et al.
patent: 4571941 (1986-02-01), Aoyagi et al.

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