Patent GB-190802708-A (GB)
Title: Improvements in or relating to Recording Targets.
Inventor: ROSE SYDNEY ASTON MERSEY
IPC: F41J5/14
Filed: 1908-02-06
Granted: 1909-02-04
Abstract: 2708. Rose, S. A. M. Feb. 6. Targets.-An electric recording-target is connected with a miniature or replica of the target proper at the firing-point, adapted to be moved synchronously with the movement of the target and to have recorded on it, by electrically-actuated mechanism operated by the movement of the target, marks corresponding in position with the hits scored. A series of targets 2 carried on a band 1 is unwound from a roller 3 mounted in a casing 5, and is wound up on a roller 4 mounted in another casing 6, suitable guide rollers 8, 8<1> and tension rollers 9, 9 being provided. The top pivots 20 of the rollers 3, 4 are adjusted by spring levers 21 and nuts 22. The guide-rollers 8, 8<1> are fitted with ratchets 12, engaging with pawls 13 to prevent any backward motion, while the tension rollers 9 are carried by pivoted spring-controlled arms 10. The roller 4 is driven by friction gearing in the following way. A disk 25 on the end of the roller engages a disk 24 attached to a toothed wheel 23 keyed upon the roller spindle and meshing with a wheel 15 carried by the spindle 14 of the guideroller 8' ; the wheel 15 gears with a spur-wheel 16 on a spindle 17 driven by a wheel 18, which is operated by the endless rope 19 from the firing-point. At this point, the rope 19 passes round a wheel 46, which by gearing 44', 43 rotates a roller 29, which unwinds the recording-band 27 from its drum 28 ; backward movement of the drum is prevented by a ratchet 35 engaging a pawl 36, while the band is kept taut by rollers 47, 38, the latter being carried by spring-controlled pivoted arms 39. The recording-marks are obtained as follows. The target proper 2, after exposure, is wound upon the drum 4, and in so doing passes a number of spring arms 30, 30', Figs. 2 and 7, which pass through the shotholes 68 and by contact with a suitable stop complete circuits through electro-magnets carried by a frame plate of the recording-target. The energized magnets attract their respective pivoted levers 31, which make impressions on the recording-band, either by providing them with pencils, or by forming them with rounded ends 58 which indent the band, provision being made for this by grooving the roller 29. The recording-band may be blank, and a transparent representation 98 of the target placed over the markings, as shown in Fig. 15, to ascertain what hits have been made. Gauge marks are made upon the recording-band by providing each section 2 of the target band 1 with one or more holes 95, Figs. 1 and 15, through which pass spring contacts to cause a corresponding marking 101 on the recording-band. The target representation 98 can be superimposed in correct position by alining gauge-holes formed in it with the markings 101, and the position of the hits on the target thus ascertained. Fig. 16 shows an arrangement used for individual firing. The spring contacts 30, 30<1> are arranged in circuit with a set of resistances 75 which vary the current passing round an electromagnet 76, thereby giving a varying magnetization to the magnet so that a marker 77, carried by the parallel motion 84, is displaced by varying amounts. When the marker has taken up its position, due to the closing of the circuit by a spring contact passing through a slot-hole, an operator closes a circuit 86 through an electro-magnet 85 situated along the axis of the roller 29, thereby attracting the marker 77 which produces an impression on the recording- band. The gauge marks on the recording-band are made by a marker worked by an electro-magnet 97, in a circuit 96 with those contacts that pass through the gauge holes 95 in the target band 1. The pawls 13, 36, for preventing backward movement of the rollers carrying the target and recording-band respectively, are operated by electromagnets 82 in circuits 79, which are closed by electro-magnetic means 81, 83 operated by the main circuit 78.