Patent GB-190523431-A (GB)
Title: Improvements in Apparatus for Carrying or Changing Photographic Plates.
Inventor: PETERS WILLIAM AUGUSTUS
Filed: 1905-11-14
Granted: 1906-08-16
Abstract: 23,431. Peters, W. A. March 29, [date applied for under Patents Act, 1901]. Change - b o x e s ; d a r k slides. - In apparatus for storing plates and transferring them to and from a plateholder, the magazine is contained within a case, and carries a plate discharger which pivots thereon. Provision is made for normally holding the plates against looseness within the magazine and the plateholder, but the plates are freed when the plate-bolder is adapted to the discharger for charging, or when adapted to the opposite side of the magazine for returning the plate. The plate-holder is detachably interlocked with the plate discharger or with the magazine. The shutter slides of the magazine and plate-holder are interlocked for simultaneous withdrawal when the plate-holder is attached, but can be withdrawn independently of one another. The magazine, Fig. 4, is open at the back and front, and is held within the case 1, Fig. 2, by a headed pin 44 engaging a slotted sliding latch 19 which has an enlarged end to take the pin 44. The shutter slides 50, 65 have light-tight traps 52 comprising spring-urged padded metal strips. The plate discharger 58 has an edge binding 59, the rear end of which engages a channel 62, and is pivoted on a tube 66 extending across one side of the magazine. This tube 66 is slotted to contain sliding latch members 69, 70 which are operated by forked arms 72 on the rod 71 to lock the plate-holder on either side of magazine when the latter is attached. This rod 71 also controls a catch piece 79, Fig. 7, which holds the discharger in a tilted position by the catch 81 engaging the projecting part 82 of the discharger, another hook 92 on the latch 79 preventing the shutter 65 from being withdrawn. Whenever the plate-holder and discharger are in the tilted position for transferring a plate, and the rod 71 is subsequently depressed, the cam portion 77 working in the slot 86 swings the latch 79 out of engagement with the keeper 82, whereupon the discharger is automatically snapped back into its original position. An indicating and registering dial 87 works in unison with the latch 79. For holding the plates against looseness within the magazine, the enlarged head 96, Fig. 2, on the leaf spring is urged forward to press against the edges of the plates, by the flap 34, whenever the rod 32 is depresied. This rod is adjusted to be depressed by the spring 38 on the lid of the case, and is normally pressed upwardly by the lower spring 37. The plate-holder, Figs.. 5 and 6, has a felt backing 104, and the inner metallic strip 127 is bent forward and round at 128 to form with the outer casing 124 a channel for the flanges 59 of the magazine. The flange 128 is perforated to receive one or other of the latch pins 69, 70. The plate is held within the holder by the hooked end 136, Fig. 9, of a spring pivoted latch 131, which is disengaged, when the holder is adapted to the magazine, by the flange of the latter engaging the projecting part 135. Bars 122, moving in recesses of the strip 127, limit the outward movement of the slide. The slide has a wiper strip 123 of felt to remove dust from the plate. For interlocking the slides of the plate-holder and magazine, projecting buttons on the handle 109 engage flange sockets of the magazine slide, and upon the opposite side is a leaf spring 113 with a pin 114 projecting through the handle. This pin is retracted by the interaction of the parts 115, 116, when the plate-holder slide is shut. By gripping the corresponding thumb plates 139, Fig. 8, the slides are released from their respective catches 140, 120, and the pin 114 engages the hole 117 in the magazine slide, whereby both slides are withdrawn simultaneously. The plate-holder is itself withdrawn from the magazine by the handle piece 121. The back part of the carrier bottom, Fig. 2, has a sloping recess 14, and the side walls are sloped at 16, 17 to permit the tilting of the discharge, and the transfer of the plate to and from the plate-holder.