This section is from the book "Hints To Golfers", by O. K. Niblick. Also available from Amazon: Hints To Golfers.
The cleek is a club used not only to get distance when the ball has such a lie that a brassy cannot get at it, but also in the dangerous distance of approach when neither a driver nor an approaching iron could be safely used, the one sending the ball too far and the other not far enough.
Because the cleek should strike well under the ball, the lower part of the blade is made heavy that the force of the blow will be as low as possible, some cleeks being made with the weight massed at the centre of the blade in order to get the power at one point, the club being balanced by having a shortened socket. As a cleek should graze the ground, the shaft is made stiffer than the shaft of a driver or brassy and because the shaft is shorter and is set nearer a right angle with the head of the club, one should stand nearer the ball. Often in making a cleek shot the club head has to dig into the ground behind the ball with a jerk. This jerk, however, adds to the elasticity of the iron and because the ball travels further than if it had been squarely struck, many golfers play all their cleek shots in this way. In playing against the wind, a cleek is often used with a half swing as it keeps the ball low and gives it great running power.

1 - position of ball when using the driver.
2 - position of ball when using the brassy.
3 - position of ball when using the cleek. a a - sweep of the driver.
bb - sweep of the brassy. cc - sweep of the cleek.
 
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