Patent GB-190418139-A (GB)
Title: Improvements in Typesetting Machines
Filed: 1904-08-22
Granted: 1905-08-22
Abstract: 18,139. Dow Composing Machine Co., and Dow, A. Aug. 22 Type, setting. - Relates to machines for setting up in line types, matrices, or the like, in which the types are ejected by forcers from the channels of two type cases on to raceways placed beneath each case. Two reciprocating drivers sweep the types along to a channel between the raceways, into which channel the types are forced by a reciprocating type - depresser. Above each raceway is a friction bar which is raised, by the action of the forcers, a distance equal to the width of the type ejected. By depressing a key, a lock is released which allow the type-forcers to be actuated by separate mechanism. The forcers are given a slight initial movement by bell-crank levers actuated by springs. They are carried to the end of their stroke by cam-blades fixed to a rotating shaft, and are returned to their initial position by other spring-actuated bell-crank levers. The main shaft 3 of the machine is driven by fast and loose pulleys 6, 7, Fig. 1, and carries two cam-blades 8, Fig. 7, and a fixed collar 9, in each Ride of which is formed a conical socket 10. The blades 8 are fixed to pairs of collars 12 loose on the shaft 3. In the inner collar of each pair is mounted a tapered pin 13 which is pressed by a spring into the socket 10. Should the blade strike an obstruction, it will thus be disconnected from the shaft 3 during a revolution. The shaft is made in sections united by collars 16 and pins 17. The forcers 18, Fig. 4, are connected by projections and recesses to forcer-tips 19 which push out the lowest type from the bottom of the cases 26 on to the raceways 28. A notch 22 in each forcer can be engaged by a lock 29, and a concave depression in the end of each forcer allows the rotating cam-blade to clear it, in its normal position. A transverse bar 30 carries two brackets 31 in which are mounted the locks 29. The locks are provided with heads 200, Fig. 13, which limit their downward movement, and with lugs 201 which engage with notches in the forcers 18. The locks are pressed down by spring-actuated pins 32 which bear on the heads 200. The lower ends of the locks stand over rods 38 which are actuated by keylevers 40 to raise the locks and free the forcers. An initial movement is given to the forcers by bellcrank levers 43, Fig. 4, one arm of each of which is connected by a spring 47 to a plate, the position of which can be adjusted by a set-screw 52. When the forcers return, the levers 43 are carried against a bar 57 covered with rubber or the like. This bar rests in L-shaped supports attached to brackets 53 which can be adjusted in position by means of screws 206 passing through curved slots. The forcers are returned bysimilar bell-crank levers 25, which are actuated by stronger springs 64 and normally rest against cushion-bars 61. The forcers are provided with spring-supported grooved guides 70. In order that more than one channel in the type cases may be used for one kind of type, pivoted levers 75, Fig. 13, are arranged to shift the rods 38 from one lock to another. These levers are held in position by dogs which engage notches in a plate. The type-drivers 90 are actuated by a bell-crank lever 83, Fig. 1, which is connected by a rod 86 with a pin on a disc 81 driven by bevel-wheels from the shaft 3. The two drivers are connected by a bar 92, Fig. 18, which slides between two plates 95 fixed to a flanged bar 94. A block 96 is fixed to the bar 92 and projects behind the plates 95. Above each raceway 28 is a friction bar 98, Fig. 4, to the ends of which are fixed slotted posts into which project the ends of levers 101 fixed to shafts 102. Springs 104 attached to arms on the shafts 102 keep the friction bars depressed. To each shaft 102 is fixed an arm 105 carrying a pin which is engaged by a hook at the end of an arm 113 connected to a lever 112 on a shaft 108. Arms 107 on this shaft carry a plate 109 in which are placed setscrews 110 adjusted by screws 111. Cam surfaces on each forcer act on the screws 110 and raise the friction bars the amount necessary for each type. To the drivers 90 are attached feet 122, Fig. 16, which are pressed by springs into a vertical position, in which they are adjusted by set-screws 126 abutting against projections on the drivers. Shoes 116, over the bottoms of which the friction bars pass, are attached by means of notches to the feet of the drivers ; should a shoe strike an obstruction, it will thus be released from the driver. On top of each raceway in front of the type case is a guide-bar, in the underside of which are cut notches corresponding in height to the thickness of the types. This bar is removably secured by means of spring arms. The type-depresser 137, Fig. 4, is carried by a T-shaped slide 138 moving in guides and attached at the top to a lever 140 turning on a shaft 141. Another lever 142, turning on this shaft, carries a roller which is held by a spring against a cam 144, on the shaft 3. The end of the lever 142 is bent upwards and is bored out to receive a block 149 which is pressed down by a spring. A lug 152 on the lever 140 is held by a screw 153 in contact with the block 149. This arrangement allows the lever 140 to yield should the typedepresser meet an obstruction. To prevent the type from being carried too far, the ends of the friction bars carry dogs 155, Fig. 23, which can slide in grooves 157 in the bars. The heads of the dogs are provided with downwardly - projecting hooks which are engaged by the type and are carried along until they register exactly with the further side of the type-receiving channel 97. The posts 160 on the ends of the friction bars carry pins 158 which slide in a block 159. The lower ends of the posts have feathers which engage grooves 162 in the friction bars. The posts carry plugs 164 which are pressed by springs on to the dogs 155. The type-depresser 137 consists of three fingers, of which the central one moves in vertical slots formed in the heads of the dogs. A shutter 168, pivoted in a recess ithe channel 97, is pressed up by a spring against a shoulder 172. Pivoted in the opposite wall of the channel are two plates pressed outwards by springs and having shoulders at a slightly-lower level than the shoulder 172. When a type is forced into the channel, these shoulders will press it under the shoulder 172 and prevent it from being pushed out of the channel by the shutter. A pair of spring-pressed plates 180 are mounted in the channel, and these and the opposite face of the channel are slightly curved to prevent the bottom type from falling. To ensure the type being sufficiently far out on the raceways to enter the channel 97, a cam - faced plate is mounted so as to project over the raceways. From the channel 97, the type may be transferred to a justifying or other mechanism. A space key may be provided to operate the lock of a forcer and insert any suitable space.