GB165395A - Improved apparatus for registering the arrival of carrier pigeons - Google Patents

Abstract

165,395. Plasschaert FrÞres, A. & H. June 23, 1920, [Convention date]. Cylinder and like machines.-In pigeon-timing apparatus wherein the time impression is effected by means of a roller which traverses guides and presses the record-strip against a dial plate as described in Specification 19131/05 [Class 101, Printing other than letterpress, &c.], the roller is brought into operation by a winch mechanism having mutilated gearing to effect the automatic release of the roller, and the guide or runway for the roller is formed with double straight grooves. The printing roller 13 is mounted in bearings 14 carried by a chain 15 the upper end of which is secured to a drum of a spring barrel 16 while the lower end is attached to a drum 17 and in the initial position as shown in Fig. 1 is completely unwound therefrom. The operating-crank is mounted on a shaft 21 which carries a mutilated gear-wheel 19 adapted on rotation to turn a gear wheel 24 to wind up the chain on the drum 17. The shaft 21 also carries a single toothed wheel 25, Fig. 7, adapted to engage the teeth of a wheel 27 mounted on a shaft 28. During the winding of the chain on the drum 17, the roller 13 is carried along in the upper groove 37 of the runway 32 and the movement causes a raising of the inclined upper length of chain and a pressure to be exerted by the bearings 14 on the runway. At the end of the movement the roller assumes the position shown in Fig. 6, and at the same time the gear wheel 19 releases the gear wheel 24 whereupon the chain and roller, under the action of the spring drum 16, return to their normal position traversing the lower groove 38 of the runway 32. During this movement the roller exerts a pressure on the paper strip 33 so as to press it against the dial plate 34. To ensure that the roller traverses the right groove in its forward and return movements the ends of the runway are bevelled as shown at 35, 36. The pressure exerted by the roller in pressing the paper strip against the plate 34 may be regulated by adjustably mounting the roller guides.