Patent GB-313069-A (GB)
Title: Improvements relating to adjustable brackets or supports for telephones
IPC: H04M1/12
Filed: 1928-03-06
Abstract: 313,069. Westmoreland, A. G. March 6, 1928. Brackets.-A collapsable lazytongs bracket for supporting a telephone receiver &c. is pivoted to a standard &c., which supports the bracket on a desk &c., the arrangement being such that the bracket can be angularly adjusted in one direction independently of a friction controlled member constituting part of the pivoted connection, means being provided to automatically engage the friction member after adjustment to prevent inadvertent movement of the bracket in the other direction except by the application of sufficient force to overcome the resistance of the friction controlled member. In the construction shown, the end member 9<b> of the lazytongs is freely pivoted on a bolt 10 which passes through the forked end 11<a> of the supporting standard &c. 11 and through a disc 14 located between the arms of the fork so that the disc may be frictionally gripped between the arms by tightening up the bolt 10. The disc is formed with peripheral ratchet teeth engaged by a pawl 15 pivoted at 16 to the lazytongs, the arrangement being such that the bracket may be freely turned to an upwardly inclined position, the engagement of the pawl with the disc 14 preventing downward movement except by sufficient force to overcome the frictional grip of the forked end 11<a> on the disc. The angular movement of the bracket is limited by the abutment of shoulders 9<c>, 9<d> on the end member 9<b> with a projection 19<a> on the forked end 11<a>. In order to prevent inadvertent opening or collapsing of the lazytongs, one of the middle joints may be tightened by a screw and spring arrangement. Inadvertent movement of the arm from a collapsed condition to a downwardly inclined extended position is prevented by a spring 18 attached at one end 18a to the lazytongs and at the other end to a link 19 pivoted at 19<a> to the forked end 11<a> of the standard 11. The arrangement is such that when the bracket is extended downwardly the link 19 is prevented from rotation by its engagement with the head of the bolt 10 so that the bracket can only be extended against the action of the spring 18. To prevent inadvertent collapse of the bracket when adjusted to an upwardly inclined extended position, a lever 20 is pivoted at 21 to the lazytongs and one end attached to a spring 24 while the other end is notched at 20b for selective engagement with a projecting pin 23 on the bracket. The telephone receiver &c. 7 is carried by clips 8 attached by links 22 to links 9<e> pivoted to the outermost bars 9 of the lazytongs which arrangement causes the automatic engagement of the lever 20 with the projection 23 when the receiver &c. 7 is moved to a vertical position. The lever 20 is unlocked by canting the receiver &c. 7. The pivotal movement of the lever is limited by a stud 25 adjacent the pivot 21. The telephone &c. is mounted on the lazytongs so that it assumes automatically a vertical position regardless of the inclination of the bracket or so that it can be brought into a vertical position by a comparatively effortless motion of the wrist. In the construction shown, the mounting of the instrument so as to enable its manipulation to move the lever 20 permits it to be turned instinctively into a substantially vertical position. In a construction mentioned in the first Provisional Specification, the instrument is provided with a sleeve having trunnions engaging and turning in a forked member carried by the bracket so that the instrument automatically assumes a vertical position.