Patent GB-190723759-A (GB)
Title: Improvements in or relating to Typewriters of the Type-bar Class.
Inventor: MOYA HIDALGO
Filed: 1907-10-28
Granted: 1908-04-02
Abstract: 23,759. Moya, H. Oct. 28. Typewriters.-Relates to actions of the type-bar class, and to a mounting for such actions whereby the type-bars may be shifted for change of case and also the action swung clear of the remainder of the machine and if necessary separated entirely therefrom. Fig. 1 shows a partial central section of the machine, Fig. 4 a perspective view of the universal bar, and Fig. 11 an elevation showing the shift-key. The type-bars D are pivoted at D' in an arcuate block C. The key-levers F are formed with an approximately vertical slot F<3> engaged by an arcuate rail E supported by the block C. The key-levers are also formed with an arm F<2> which engages a rounded recess D' formed in the typebar close to the pivot D<1>. The type-bars are held in normal vertical position against a pad C<3> by means of a spring G which connects the type-bar and the key-lever. When a key is depressed, the lower end of the arm F<2> moves round the pivot D<1> through a quarter of a turn, and the key-lever and the spring move bodily downwards, the spring being also extended. When the key is released, the spring G contracts and the action returns to the normal position. The total extension of the spring is small and it can therefore be made comparatively strong. The type-bars and the key-levers may be guided by combs formed in the block C and also by the usual guides arranged over the platen. To provide means whereby the keys in different rows may have the same depression, the slots F<3> in the top row are inclined forwards, while those in the bottom row are inclined rearwards. The supporting-means for the block C consists of a frame L formed with arms L' pivoted to the base A at L<2> and arms M pivoted to the base at M<3>. The arms L\ M are connected on each side of the base by a link M<2>, and are respectively formed with slots L<3>, M' which receive pins N on the block. Arms O formed with holes which take over the pins N are pivoted to the arms O<1> and pressed by spring washers O<2>. By pressing the four arms O outwards, the block C is released and the whole action may be removed from the rest of the machine and if desired an action having different type characters may be substituted. The means for shifting the action for change of case comprises a shift-key P pivoted to a link P' which is secured to one of the arms L<1>. The shift-key is normally in its highest position and the types d<1> are in operative position. When the front part of the key is pressed, a finger P' on the key engages a stop Q and the block C is moved sufficiently to bring the types d<2> into operative position. When the back part of the key is pressed, the finger P<2> misses the stop Q, and the link P<1> engages a stop R and brings the types d' into operative position. A cam D<3> on each typebar engages a universal bar H. A bar H<1>, pivoted to the base A and to the universal bar H, is also pivoted to a frame H<2> which is pivoted to the base A and carries an arm H<3> pivoted to the universal bar H. To permit necessary play, the bar H<1> has pin-and-slot connexion with the base A, and the arm H<2> has pin-and-slot connexion with the universal bar H. A space-key K, carried by a pivoted frame K<1>, is formed with a projection K' controlled by a spring K<3> and adapted to engage a projection H' on the frame H', and thereby depress the universal bar H, which carries fast and loose dogs J<1>, J' arranged to engage alternately with the carriage-rack B<1>. In a modification the space-key is supported on a spring-controlled lever pivoted at the centre of the frame C, and the universal bar is restored by a spring which is secured to the base and bears on the frame H.