Patent GB-191302148-A (GB)
Title: Improvements in Printing Machines.
Inventor: SAMPSON CHARLES HENRY
IPC: B41K3/00
Filed: 1913-01-27
Granted: 1913-06-26
Abstract: 2148. Sampson, C. H. Feb. 3, 1912, [Convention date]. Index type-wheel machines; machines for perforating paper types and dies.-A machine particularly for fllling-in the amounts of cheques &c. a word at a time comprises an index-member which sets the type-wheel, operates the impressionhammer, and sets and operates a variable letterspacing mechanism for feeding the cheque through the length of the word printed plus a space. The types and the impression - hammer are formed with inclined grooves adapted to puncture or tear the cheque so that the ink can penetrate. The types are cast with flat faces and the grooves are formed subsequently by the impression-hammer. Index setting-arrangements; alining for impression.-The type-wheel B, Fig. 4, is connected by pinions E<1>, E<3> and bevelgearing E<4>, E<6> to a rotatable sleeve F carrying an index G<2>, Fig. 2, formed with a forked end G<4> arranged over a scale H. The sleeve is rotated for setting the type-wheel by a knob G<2> secured to a lever G, described below, which is depressed at each operation of the machine and is adapted to aline the type for impression by entering between the teeth of a rack-sector K. Hammer-impression arrangements.-The lever G, Fig. 2, engages a lever J bearing on a plunger I which is mounted in the sleeve F and is provided with an arm I<1> engaging a lever C<3> carrying the platen C. The lever C<3> is secured to a returning- spring C<7> and is provided with an adjusting-screw C<6> to engage the arm I<1>. The levers G, J are pivoted in the head F<1> of the sleeve. The lever C<3> is formed with semicircular trunnions C<4> mounted in bearings C<5>, the arrangement permitting the axis of the lever to be practically in the plane of the paper support A<1> so that the platen moves normally to the type during impression. Letter-spacing mechanism.-The cheque D is fed through the length of a word plus'a space after each impression by serrated feed-rollers L, L<1> operated by ratchet-gearing N, N<1> controlled for variable spacing by a drum P secured to the pinion E<1> and formed with a series of longitudinal grooves P' corresponding in length to the word-types. The pawl N<1> is carried by a radius-arm N<2> coupled by a link N<8> to a lever N<3> having a slotted connexion N' with a slide O formed with a pin O<2> adapted to enter the grooves P<1>. The lever N<3> is operated from the arm I<1> on the plunger I through a yielding connexion consisting of a spring Q<2> arranged on a bolt Q pivoted to an arm N<6> on the lever When the lever G is depressed for impression, the pawl N<1> is retracted idly until the pin O<2> is arrested by the end of the slot in position, the yielding connexion Q<2> permitting the plunger to descend further to operate the platen. During the return of the plunger by the springs the pawl rotates the ratchet wheel and feeds the cheque through the required space. The feed-movement of the pawl is limited by a fixed stop N<7>. Sheet feeding and guiding arrangements.-The rollers L, L<1> co-operate with feed-rollers R, Fig. 2, journaled in a spring-pressed pivoted frame R' formed with a releasing-finger R<5>. The cheque engages an adjustable top guide S, Fig. 6, which is secured by a screw S<2> engaging a lateral slotted arm S' on the guide. The feed-rollers are arranged between the guide and the printing line so as to permit the cheque to return to the normal condition after being slightly moved or distorted by the action of the types. Roller inking-arrangements.-The inking-roller T, Fig. 4, is arranged in an overhanging part A<2> of the casing and is journaled in a frame T<1> pivoted at T' to a cover T<3> and pressed towards the type-wheel by a spring T<5>. The cover is formed with a hooked hinge T<4> and can be detached for the purpose of supplying the roller with ink from a pad contained in a drawer V, Fig. 2. The distributing- roller U, Fig. 4, is journaled in a pivoted frame U<1> and pressed upwards by a spring U<3>.