Patent GB-191013798-A (GB)
Title: Improvements in Stenographic Machines.
Inventor: KEHOE WILLIAM JOSEPH
IPC: B41J3/26
Filed: 1910-06-07
Granted: 1911-05-11
Abstract: 13,798. Kehoe, W. J. June 7. Stenographic machines; type-lever and space-key actions.-Key-levers R, Figs. 1 and 2, preferably five on each side of the machine, carry dot- and-dash type r<2> one behind the other in two lines, for understrike impression on a paper strip against a platen roller I. Side standards T on the base-plate A of the machine carry a top plate T', on which is secured a central block TO. Coned pivot rods U, to which the keylevers R are attached by clips U', are mounted in sockets in the block T<2> and in adjustable screws in the standards T, parallel to each other in the horizontal plane of the printing-points. Springs W return the key-levers R. Two space-keys S are provided on a frame S' mounted on a pivot rod t projecting from the block T<2>. Stops s<10> limit the upward movement of the frame S'. The rear end s<2> of the frame S' projects upwards to engage a horizontal part l<1> of a universal frame. To prevent noise, the key-levers R rest at the type ends on cushions N. Web feeding and guiding arrangements.-A paper-spool is supported by levers G', Fig. 1, pivoted to a bracket G<2>, and the paper passes through a guide loop g, Figs. 1 and 2, between a feedroller H and the platen roller I, over a guide, under the platen roller, and back to a receiving- spool G<10>. The guide-loop g is carried by an arm g<1> adjustably secured to a bracket g<2>. The feed-roller H is carried by a spring plate h secured to the bracket g<2> and adjustable by means of a set-screw. The platen roller I is mounted on pivot screws I' in front and rear brackets B, B'. The feed-roller and platen roller are of the same diameter, and are formed of a hollow metal bushing covered with hard rubber. The feed-roller bushing is closed by caps carrying a spindle fitted with a gear-wheel h<2>. The platen-roller bushing is closed at one end by a cap fitted with gear-wheels d<3>, h<3> for driving the ink-ribbon mechanism and the feedroller respectively, and is extended at the other end to carry ratchet-wheels J, K; pivot sockets are formed in the cap and the extension. Letter-spacing mechanism. The ratchet-wheel J, Figs. 1 and 2, on the platen roller is engaged by a driving-pawl J' on the universal frame, and by a spring detent pawl k on an arm k<1> adjustably secured to the bracket B'. The second ratchet-wheel K on the platen roller is engaged by a detent tooth k<4> on the universal frame. The pawl J<1> is provided with a handle, which serves to release the pawl from the wheel J, and also as a weight to hold the pawl in engagement, in conjunction with an adjustable spring j<2>. The universal frame comprises a vertical part l, which surrounds the ratchetwheels J, K and carries the pawl J<1> and detent k<4>, and an horizontal part l<1>, which is engaged by the key-levers, formed with a central opening for the passage of the type, and connected with a lever L<1> extending sideways at right-angles to the axis of the platen roller. The lever L<1> is mounted on pivot screws l<4> in a bracket L<4>, and is pormally depressed by a spring l' adjustably secured to a handle l<6> on a hub l<5>. The upward movement of the frame is limited by a stop, comprising an adjustable cushion m<2> on the stem m<1> of a yoke m attached to the part l<1>. Noisepreventing arrangements comprise the cushion m<2>, cushions x, x<1> on the part l<1> for engagement by the key-levers, ratchet-wheels J, K made of hard rubber, and the pawl J' made of fibre, hard rubber, or the like. Ink-ribbon mechanism.-Spools C, Figs. 1, are mounted by pivot screws c in the front and rear brackets B, B', and carry gear-wheels C<1> for reversible actuation from the gear - wheel d<3>, Figs. 1 and 2, on the platen rollers, through intermediate gear-wheels d<2>, d<1> on a lever D pivoted concentrically with the gear-wheel d<3>. The lever D can be set by hand in two positions determined by stops, and is retained in either position by a spring bar F, which is provided with a central recess so that the lever D can be moved to a central inoperative position.