Patent GB-191211183-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: FELL JOHN CORRY
IPC: B41J25/18
Filed: 1912-05-10
Granted: 1912-12-05
Abstract: 11,183. Fell, J. C., [Monarch Typewriter Co.]. lay 10. Tabulating-mechanism.-Column stops are contained in a magazine, and are transferred one at a time to the stop-rack, the transference being effected in the plane of a stop which co-operates with the column stops. (1) In the arrangement shown, the column stops 70 are contained in a fixed magazine 54 and can be transferred to a stop-rack 40 on the carriage 9, for co-operation with the stop-bars 21. of the usual denominational tabulating- mechanism, the transference being effected in the plane of the decimal stop-bar. The stops are strung on a guide-rod 64 in the magazine, shown in Fig. 3 in section looking from the rear, and are confined between a follower 74 and an end-piece 77 which forms a guide for the stop ejecting and returning devices. The follower slides on the guide-rod and is pressed towards the end-piece by a spring 76 arranged in an extension 61 of the magazine. The guiderod terminates short of the end-piece, the first stop being held up by engaging the coned end of a plunger 67 mounted in the guide-rod and pressed outward by a spring 68. The ejector 86 is mounted in guide-grooves in the end-piece, and is adapted to engage notches 73 in the stops. The ejector is coupled by a link 94 to a crank 96 on a rock-shaft 97 provided with a crank 105 connected by a link 109 to the stop-set ' key 110. The mouth 84 of the magazine is in the same plane as the decimal stop-bar. The stops are returned to the magazine by means of a slide 89 which is guided in the end-piece and is formed with an off-set shoulder 91 to engage the stops. The slide is conpled by a link 114 to a crank 117 on a sleeve loose on the rockshaft 97 and provided with an arm 121 which is coupled by a link 123 to a ' clear ' key 124. The stops are preferably set with direct reference to the column-ruled sheet on the platen, the platen-carriage being moved to bring the decimal position in each column successively to the printing point and the stop-set ' key being operated to transfer the column stops to the rack when the carriage is in these positions. As the column stops are transferred in the plane of the decimal stop-bar and as moreover the carriage after being arrested by the engagement of a column stop with one of the stop-bars has as usual a slight further movement to the left after the stop-bar has been withdrawn, the column-stops can be set without making any mental calculation or allowance. The magazine shown is adapted to contain twenty-five column stops. When the last stop has been ejected, the follower 74 comes into the path of the ejector and by preventing full actuation of the key gives warning to the operator. The stops are returned to the magazine by actuating the ' clear ' key each time a stop is brought opposite the mouth 84 during the return of the carriage, the decimal stop-bar being used to ensure register. The column stops and the follower 74 are bevelled to facilitate the ejection and return of the stops. (2) The column stops are retained on the rack 40 by means of a circular rod 43, Fig. 4, mounted in a longitudinal groove in the rack and pressed outwards by springs 44 into engagement with notches 72 in the stops, the rod yielding during the insertion and withdrawal of the stops. The rod is held in the groove by guide-screws at the ends and by a bracket 47. The rack is prevented from sagging by means of a supporting-roller 50, Fig. 1. The front wall 54<a> of the magazine is arranged to engage the column stops to prevent the rack from springing towards the front of the machine. Key interlocks.-(1) The keys 110, 124 may be provided with a full-stroke device consisting of fingers 141, 142, Fig. 12, pivoted on the keystems and formed with flats engaged by springs 145, the ends of the fingers being rounded and off-set to engage a fixed lug 134. (2) To prevent simultaneous operation of the keys 110, 124, there may be provided a known type of interlock, consisting of a pivoted arm 138 provided with a plate 137 adapted to engage the coned faces 136 of collars 135 on the key-stem,