relief frame

relief frame

[ri′lēf ‚frām]
(mechanical engineering)
A frame placed between the slide valve of a steam engine and the steam chest cover; reduces pressure on the valve and thereby reduces friction.
References in periodicals archive ?
The relief frame is an instance of a more general rescue scenario in which there is a hero (the reliever), a victim (the afflicted), a crime (the affliction), a villain (the cause of affliction) and a rescue (the relief).
They get stuck in a tragic mode, an ironic attitude, or a comic relief frame of reference that take nothing in their lives seriously.
This will be done through the sale of the Comic Relief frames which cost just PS2, with 100 per cent of the proceeds going to the charitable organisation.