Patent GB-191218897-A (GB)
Title: Improvement in Smallarms.
Inventor: CUDIA LUDUVICO
IPC: F41A9/23
Filed: 1912-08-17
Granted: 1913-09-17
Abstract: 18,897. Cudia, L. Aug. 28, 1911, [Convention date]. Breech actions, sliding breech-block.-Relates to magazine guns, and consists in providing (1) a magazine which extends substantially the entire length of the gun and into which the cartridges are fed in sets, each containing several cartridges superimposed one above the other; (2) means whereby, as a slide member is reciprocated, the cartridges in each set are raised successively into the firing-chamber, and as each set is exhausted, another is moved longitudinallv into the feeding position; (3) a firing- mechanism for manual operation or quick firing. In the form shown in Fig. 3, the magazine comprises a forward part 13 and a rear part 21. The cartridges in superimposed sets of five are introduced at the rear end in a special holder 31, Fig. 13, and the magazine is closed when full by a hinged cap 24. The cartridges are fed into the firing-chamber by reciprocating a slider 47, which carries a spring-pressed dog 61. Fig. 4, adapted to operate a ratchetwheel 59 pivoted on a shaft 60 to the gun body. Fixed to the wheel is a pinion 55 gearing with a vertical rack 49 fixed to a cartridge tray 51, Fig. 7, and having four holes 57, and a recess 58, which does not penetrate the rack; as the rack is fed upwards a pin 97 on a spring arm 98 fixed to the gun enters each hole in turn, so that the tray is elevated each time by the proper amount to feed the uppermost cartridge into the breech. When the last of the five cartridges has been fed up, the pin 97 rests in the recess 58 so that the arm 98 is bent outwards into the path of a stud on the breech-block 62, and as this is moved forward by the slider 47, the arm 98 is displaced so as to disengage the pin 97 from the rack, which is then returned with the tray 51 to its initial position by a spring 52. The next set of cartridges is then fed rearwards from the chamber 13 by a spring-pressed pusher-plate 14. This set is prevented from being fed too early by a spring arm 102 fixed to the gun at 103 and carrying a finger-plate 100 barring the path of the cartridges. The rear end of this arm is gradually pressed outwards, as the rack 49 is elevated, by a cam 104 on the shaft 60 until, when the rack is in its highest position, the plate 100 is moved clear of the cartridges. At each reciprocation of the slide 47, a projection 111<b> thereon strikes a spring-held sliding bar 111<a> in the stock, and causes a dog 111<1> pivoted to the bar 111<a> to feed a spring-pressed rack bar 108 sliding on a fixed bar 106 one tooth in the rearward direction. The dog 111 prevents forward movement of the bar under the action of the spring 110. When the forward chamber 13 is empty, the rear end of the rackbar is arranged to release a latch 113, locking the rear pusher-plate 28, which then feeds forward the rear division of cartridges into the feeding position. Simultaneously, a spring arm 109 carried by the bar 108 locks the pusherplate 14 in its rear position, to isolate the chamber 13. The dogs 111 and 111<1> may be disengaged from the bar 108 by means of a knob on the outside of the gun, and the bar 108 returned to its initial position when the magazine is empty. The breech-bolt 62 is normally held in the locked position by a latch arm 68. As the slider 47 is moved rearwards. a vertical spring arm 64, carried thereby and engaging the head 63 of the breech-bolt, causes this to move backwards with the firing-pin. compressing the springs 71, 74. An extractor 114 carried by the bolt withdraws the used cartridge-case, and a projection 115 on the extractor rotates the spring-pressed shutter 117 to expose the opening 118, through which the case is discharged by the ejector 119. The firing-pin meanwhile is cocked by its notch 77 engaging the sear 78. As soon as a fresh cartridge has been fed into the breech, the arm 64 engages a cam surface 79 and is displaced out of the path of the breech-bolt, which moves forward under the action of the spring 71 and forces the cartridge into firing position. The firing-pin may be locked in its retracted position by a device which prevents the rotation of the sear 78. For manual operation, the pivoted sear 78 is tripped by pressing the trigger 79<1>, which is connected to the sear by a series of links 80, 81, 85. For quick firing, a lever 90 pivoted at 91 is moved upwards by means of a knob on the outside of the gun until its arm 93 rests against the roller 94 on the link 85 so that, when the slide block 47 is reciprocated, a shoulder upon it strikes the lower end of the lever and trips the sear. The Specification as open to public inspection under Section 91 (3) (a) describes also a lubricating-device comprising an oil-reservoir in the gun stock, a tube leading from the reservoir to the firing-chamber, and a pump operated from the slider 47 for forcing the oil through the tube as the slider 47 is reciprocated. This subjectmatter does not appear in the Specification as accepted.