Patent GB-191309669-A (GB)
Title: Construction of Frame and Carriage of Typewriting Machines.
Inventor: PETERMANN OTTO
IPC: B41J29/02
Filed: 1913-04-24
Granted: 1914-01-22
Abstract: 9669. Petermann, O. April 24. Type-lever machines folding machines. - A framework of the kind in which the sides and the back are made from a single sheet of metal is formed with integral parts, described below, for securing the frame at the corners and for mounting the action and the spacing and shift mechanisms. The frame is particularly applicable to folding machines in which the carriage-bed 16, Fig. 1, is pivoted to arms 15 on slides 19 which can be lifted by shift-levers 20. (1) The sides 23 and the back 21 are formed at the top with flanges 31 having at the corners overlapped ears 33, 34 secured by bushings 36. The sides and the back are formed at the bottom with flanges 32 having at the corners overlapped ears 35<a>, 36<a>, Fig. 6, secured by rivets. The sides are connected at the front by a flanged cross-bar 37 having ears secured to the sides by rivets. The sides are formed with parts 42, preferably curved, which serve in the usual manner as rests for the platen 18 when the machine is folded. A curved or flat cover-plate 44 is provided with tongues entering slots in the sides. (2) The type-lever hangers 30 are secured by screws 29 to ribs 27 formed on the back 22. The returning-springs 50 for the key-levers 11 are hooked into apertures in a cross-bar 48 secured to the flanges 32. Space-key actions.-The splce-bar 37<b> is provided with an arm 37 adapted to engage stop-lugs 37<a> formed on the cross-bar 37. The space-bar levers 37<d> are notched to fit over fingers 52 on the cross-bar 48, referred to above, the fingers being formed with side-pieces 53 to guide the levers. Carriage-shift mechanism.-The slides 19 which support the carriage are guided by the bushings 36 in the ears 33, 34. The counterbalancing-spring 57 for the carriage is secured at one end to a finger 58 on the rock-shaft 21 and is secured at the other end to a bolt 55 which is mounted in an integral lug 54 on the back 24 and is provided with an adjusting-nut 56. Letter-spacing mechanism.-The bell-crank levers 60<a> which carry the universal bar 60<e> are pivoted on depending parts 59 of the ears 33. Paper - carriages; line - spacing mechanism.- (1) The carriage-bed 16 and the base 17 of the carriage are each made from a single sheet and are formed with grooves 63, 64, 65, 66, 78 which constitute races for balls 69, there being a pair of balls in the front race and a single ball in the rear race. The balls are connected by a wire separator 70 formed at the ends with bends to encircle the balls. The carriage is held down by the engagement of flanges on the base 17 with a screw 76 and a lug 75 secured to flanges 61, 62 on the bed 16. The carriage is formed with end walls connected by a tie-rod 81. (2) One of the end walls 80 is formed with cheeks 82, Fig. 12, to carry the line-spacing lever 84 and with a finger 83 which can be gripped at the same time as the line-spacing lever. Sound-deadening supports.-The rubber feet 87 are secured to caps 88 which are preferably formed integrally with the frame and the cross-bar 37.