Patent GB-191207016-A (GB)
Title: Improvements in Typewriting Machines.
Inventor: FELL JOHN CORRY
IPC: B41J11/04
Filed: 1912-03-21
Granted: 1912-11-21
Abstract: 7016. Fell, J. C., [Yost Writing Machine Co.]. March 21. Sheet feeding and guiding arrangements; paper-carriages; paper-shelves; platen scales.- Relates to arrangements wherein the paper feeding and guiding devices are constructed in units which can be assembled for carriages of different lengths. (1) The platen-frame consists of end-plates 8 connected by tie-rods 9, 10 and a rock-shaft 11 which are braced by a transverse plate 90. The platen-frame is detachably secured to the truck 5 by the engagement of recesses 18 in the end-plates with pins 7 on lugs 6 and by the engagement of the tierod 10 with lugs 19 provided with catch-springs 21, the platen-frame being mounted or dismounted by a pivotal movement about the pins 7. The truck is provided with four or more lugs 6 so as to be able to carry platen-frames of different lengths. The end plates 8 are a Iso tied by the platen 17, this being provided with heads 13, 13<a>, Figs. 2 and 5, which are journaled in recesses 12 in the end plates and are held down by caps 16. The right end plate is engaged on opposite sides by shoulders on the head 13, and the left end plate is engaged on the inside by a shoulder on the head 13<a> and on the outside by a shoulder on the spindle of the thumb-wheel 14<a>, which is screwed into the head and can be adjusted to take up wear. The thumb-wheels 14, 14<a> are secured by studs 15, 15<a>. (2) The paper-shelf 23 is pivotally mounted on studs 31 on brackets 28, which are secured to the rock-shaft 11, the shelf being held to the bracket by springs 35, which are arranged round the studs 31 and rest in pockets 33 in the shelf. The rear paper-apron consists of sections 24. two being shown, which are secured by screws 70, Fig. 1, to brackets 40 formed on collars secured to the tie-rod 11. The sections are held up by engaging fingers 72 on hangers 25, described below. The front paper-apron 63 extends the length of the platen and is secured to hangers 61, which are journaled on the rod 10 and are pressed upwards by springs 68, Figs. 2 and 5, secured to collars 67 engaged between the arms of the hangers 61. The apron 63 is formed with depending lugs 66. Fig. 1, for guiding the sheet. (3) The rear feed-rollers 26 are mounted on a series of shafts 42, two being shown, which are independently carried by pairs of hangers 25 journaled on the rod 11, The front feed-rollers 57 are mounted on a series of shafts 58, which are independently carried by pairs of hangers 53 journaled on the rod 9. The hangers 26, 53 are connected in pairs by springs 51, Fig. 1, secured to lugs 52 on the hangers 53 and to extensions 46 of the hangers 25, the springs serving to hold both sets of feed-rollers against the platen. The tension of the springs can be adjusted by screws 48 which engage nuts in the springs, the screws having locking-serrations 50 to engage serrations in the extensions 46. (4) The paper-fingers 102 carry marginal rollers 105 and are mounted by sleeves 103 to slide on independent bars 94, which are journaled in the brace-plate 90 and the end-plates 8. The fingers are each held to the platen by a spring 98 engaging the end 97 of the release-finger 96 secured to the bar 94. The turning of the bar is limited by the engagement of the end 97 with a lug 101 on the spring. (5) A side-lay provided in connexion with the paper-apron 24 consists of a finger 111, Fig. 10, formed on a plate 110 connected by bends 109 to a bar 108. which can slide for adjustment in a slotted bar 107 secured in apertures 106, Fig. 1, in the brackets 40. The plate 110 rests on the apron 24. the bends 109 passing through a gap between the aprons 24, 23. (6) A paper-scale 64 is secured to the apron 63. (7) For simultaneously releasing the feed-rollers and the paper-aprons of all the units by rocking the shaft 11, the brackets 40 are provided with pins 73, Fig. 1, engaging the hangers 25, and these are provided with rollers 44 engaging cams 56 on the hangers 53, which are provided with pins 69 engaging the hangers 61. The shaft 11 is rocked by means of a release-lever 74, which is pivoted at 75 and is connected by a toggle 76, 79, Fig. 2, to the shaft. Key-locks.-The lever 74 can be locked in the release position by a locking-key 84 pivoted at 83 and adapted, when depressed, to engage by a shoulder 88 with a pin 89 on the lever 74. The springs connected with the paper-feeding devices cause the pin 89 to jam against the shoulder 88 and hold the parts in the release position. By a slight further movement of the lever 74, the tension of the springs is taken off the shoulder 88, and the key 84 is then automatically retracted by a spring 86.