GB303218A - Improved means applicable for use in practising billiards and similar ball games - Google Patents

Abstract

303,218. McCrea, H. M. Oct. 6, 1927. Billiards and croquet practising appliances.-A device for use in practising billiards, croquet and similar ball games comprises a semi-circular disc or plate a having markings of angular degrees thereon and formed at the centre of the arc with carrying means for a pair of hinged arms b, b<1> which are adapted for independent angular movement over the face of the disc or plate to determine the angle and to indicate a sighting line and the position for the ball in play. An indicator arm d is rigidly attached to the disc a or to the hinged joint of the arms b, b<1>. Stops c enable the arms b, b<1> to be set in alignment. Suitable friction devices hold the arms in their adjusted positions. The arms may have hinged or telescopic extensions. In using the device, e.g. to play a half-ball stroke off the red ball into a pocket, the arms b, b<1> are set as shown at, say 146‹ and the hinge is placed in contact with the red ball g so that the indicator arm d coincides with the diametrical centre line of the ball g and the angularly-set arm b points to the centre of the pocket h. The arm b<1> now indicates the line of aim for the white ball i. After taking aim along the arm b<1>, the device is removed and the stroke may be made.