Patent GB-787242-A (GB)
Title: Improvements in or relating to type-casting and composing machines
IPC: B41B7/04
Filed: 1954-12-06
Abstract: 787.242. Single-type casting machines. LANSTON MONOTYPE MACHINE CO. Dec. 6, 1954 [Dec. 1, 1954], No. 35289/54. Class 100(3) In a typographical composing machine, during type character casting a type character dimensioning element and a matrix case positioning element are operable to determine the forming of type characters in response to signals from a second means, said signals passing into a translating device having means for receiving at least one of a given number of input signals from said second means and forwarding at least one of a greater number of output signals, in the same medium as said input signal, to establish the setting of said elements independently of each other. The machine comprises the usual matrix case front pin block 42, having one fixed pin and seventeen movable pins a-i and ai-hi, of which two pins bi, i are shown, rear pin block 44, having one fixed pin and seventeen movable pins A-I and Ai-Hi, and an air tower supplying compressed air in accordance with perforations in a record strip to lines 208A-I, 208a-i, 304-1 to 9, and four lines controlling various machine functions. The machine also comprises a wedge pin block 76, having one fixed pin and sixteen movable pins 1-8 and 1<SP>9</SP>-8<SP>9</SP>, for controlling the position of the normal wedge and thence the mould width, three decoder valves 68, 70, 72 for the pin blocks 42, 44, 76 respectively, and a stretcher valve 74 to carry over into the second rotation of the cam shaft signals for the wedge pin block. The pin blocks 42, 44, 76 are controlled by air in the lines a-i, A-I, and 1-9 respectively. The valve 68 has an inlet port 208 for each line 1-8, and two outlet ports 216, 218 for each inlet port. Air from the line 9 causes a piston 232 to move upwards in Fig. 18 to connect ports 208 to ports 216<SP>1</SP>, whereas normally ports 208, 218 are connected. Similarly, valves 70, 72 have inlet ports 208 for each line a-h, A-H respectively, and two outlet ports 216<SP>1</SP>, 218 for each inlet port. Ports 208, 218 are normally connected, while air from lines i, I respectively moves pistons 232 of valves 70, 72 to connect ports 208, 216<SP>1</SP>. In addition, air from lines i, I passes to outlet ports 218i of valves 70, 72 respectively. Outlet ports 218 of valves 68, 70, 72 are connected to the pin blocks 42, 44, 76 respectively to actuate pins a-h, A-H, and 1-8, while outlet ports 216<SP>1</SP> are similarly connected to actuate pins ai-hi, Ai-Hi, and 1<SP>9</SP>-8<SP>9</SP>, while outlet ports 218i of valves 70, 72 lead to pins i, I respectively. Air lines a-i, A-I and 9 are connected directly to valves 68, 70, 72, while lines 1-8 are connected to valve 68 through the stretcher valve 74. The stretcher valve 74 has a valve chamber 276 and piston 290 for each air line 304-1 to 8. Air from a line, e.g. 304-8 depress the corresponding piston, at 148 degrees of cam shaft revolution R1. At 340 degrees, a constant air interruption valve 60 is opened by the usual type-ejector blade lever through a rod 61, and air passes through air line 402 to a passage 306 communicating with all the valve chambers 276, and thence, in the case of the piston which is depressed, to an outlet 326 and thence to the corresponding inlet 208 of the valve 68. The air from line 402 will also keep the piston depressed after air is cut off from line 304. At 70 degrees of revolution R2, piston 78 of wedge pin block 76 is moved to the right against the raised pin by a member engaging an abutment 139 and driven by the cam shaft, to set the wedge. At 215 degrees of R2, valve 60 is closed. At 285 degrees of R2, a wedge restoring valve 58 is opened by a finger 54 of the usual jaw tongs bell crank, and air passes through line 412 to urge the piston 78 to the left. At 335 degrees of R2, the mechanical pressure from the cam shaft on the piston 78 is released, the piston moves to the left, and the pin is released and moves downwards. At 40 degrees of R3, the valve 58 is closed. Thus, air in lines 208a-208h raises pin a-h respectively of pin block 42, air in line 208i raises pin i, and air in line i combined with lines a-h raises pin i and pins a<SP>i</SP>-h<SP>i</SP> respectively. Pin i is however inoperative if a pin a<SP>i</SP>-h<SP>i</SP> is also raised, since the latter pin is reached first by the jaw. Pine A-I and A<SP>i</SP>-H<SP>i</SP> are actuated similarly by air in lines 208A-I. Pins 1-8 and 1<SP>9</SP>-8<SP>9</SP> of block 76 are actuated similarly by air in lines 304-1 to 9, but there is no pin 9. The normal wedge is thus set independently of the matrix case by separate perforations in the record strip. Specifications 8633/99, 166,466 [both in Class 100] and 787,243 are referred to.