washer

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washer

1. a flat ring or drilled disc of metal used under the head of a bolt or nut to spread the load when tightened
2. any flat ring of rubber, felt, metal, etc., used to provide a seal under a nut or in a tap or valve seat
4. Chemical engineering a device for cleaning or washing gases or vapours; scrubber
5. Austral a face cloth; flannel

Washer

 

a machine part mounted under a nut or bolt head. Plain washers (Figure 1, a) are used to increase the load distribution where the load-bearing surface is uneven or of a soft material, where the bolt hole is elongated, or where the hole diameter is enlarged. Bevel washers (Figure l,b) and spherical washers (Figure 1, c) are used to prevent the nut or bolt head from warping during tightening. Open, or C, washers (Figure 1, d) are quick-release types used in fixtures to save time in removing a used part and mounting a new one. Packing washers made of a soft material

Figure 1. Washers: (a) plain, (b) bevel, (c) spherical, (d) open, (e) spring lock, (f) tab lock, (g) end plate

are mounted under the heads of threaded plugs to provide a hermetic seal. Spring lock washers (Figure l,e) reduce the likelihood that a bolt or nut will loosen since the elastic force of the compressed washer acts on the connection. Tab lock washers have sections that can be bent (Figure 1, f) to prevent a nut or bolt from turning with respect to a load-bearing shaft or other part. End plates (Figure 1, g) prevent axial displacement of parts mounted on a shaft (such parts may be held fixed or rotate on the shaft).

washer

[′wäsh·ər]
(design engineering)
A flattened, ring-shaped device used to improve the tightness of a screw fastener.
(engineering)
A device for removing dirt and soluble impurities from pulp and paper stock.
A system for washing photographic materials to remove soluble products of developing or fixing.
A power-driven machine for washing clothes and household linens. Also known as washing machine.

washer

washers
A flat ring, usually thin, of metal, rubber, or other material, depending on its use; used to prevent leakage, to provide insulation; used as the bearing surface under the head of a fastener, such as a bolt, to assure tightness, relieve friction, improve stress distribution, or span large clearance holes.
References in periodicals archive ?
5 gross HP** engine, the new pressure washer is designed to give contractors enough power for any cleaning job, including prepping exterior siding for paint.
Through the statistical analysis, the report depicts the global and Chinese total market of Pressure Washer industry including capacity, production, production value, cost/profit, supply/demand and Chinese import/export.
Consumers should immediately stop using the recalled washers and contact GE for a free repair," the commission warned.
We've added LHT to our 2030 psi-class electric pressure washer systems in order to fill out our line of all electric offerings," intoned Daimer.
Automatic washer detergents formulated specifically for laboratory washers can meet specific needs.
As the container continues to roll, the rubber band eventually twists again-turning some of the motion energy back into stored energy, When the container stops, the rubber band untwists, flipping the washers and pushing the container backward.
Caption(s): Sears touted the benefits of Whirlpool, Maytag and Kenmore high-end washers.
Because washers are used in such a large number of industries--academics, pharmaceuticals, biotechnology, medical and veterinary environments, to name a few--they come in an assortment of sizes.
The law requires that residential washers meet a water-efficiency factor of 9.
Other ways to save on labor costs with washer extractors, according to Kelly, are:
whereas analysis at WIDL clearly shows the non-uniform state os stress within the washer used in the industry.
Consumer Alert was among those giving the Department of Energy (DOE) negative feedback on proposed clothes washer rules that promise to drive up the cost of washing machines for every consumer.