Patent GB-189708180-A (GB)
Title: Improvements in and pertaining to Printing Telegraphs, Typewriters and the like.
Filed: 1897-03-30
Granted: 1897-07-10
Abstract: 8180. Wise, W. L., [Buckingham, C. L.]. March 30. Type - writers. - Relates to apparatus chiefly applicable for printing telegraphic messages in page form upon sheets of paper. The sheet of paper has two opposite edges pasted together to form a tube, and a row of perforations is made along the stiffened portion formed by the overlapping edges. The invention consists mainly of apparatus for supporting and feeding the tube of paper. The tube of paper is supported by a tubular arm a, Fig. 7, attached at one end to the frame of the machine. Surrounding this arm and the paper tube is a toothed ring l supported by grooved rollers and rotated intermittently by gearing connecting it with the escapement - wheel j. This wheel co-operates with dogs 4, 5 and an oscillating shaft R<1> having an armature R actuated by the magnet M'. To the inner side of the ring l is attached a bracket a' (see also Fig. 9) in which is journalled a small toothed wheel f<1> engaging the perforations h<1> in the paper tube. The rotary movement of the ring l rotates the paper tube on the holder a for spacing the letters and words, and at the end of each line the toothed wheel f<1> is rotated to feed the paper tube longitudinally for a fresh line. The teeth of the wheel f work in circumferential grooves r<1>, s', t<1> in the holder a, and at the point where the line feed takes place diagonal grooves v<1>, w<1>, x<1>, Fig. 3, connect the circumferential grooves and rotate the wheel f <1>. This point corresponds with a gap in the teeth of the escapement-wheel j. The diagonal grooves may be formed in a small block fitted into the support a. A longitudinal groove u<1> is formed to permit of rotation of the wheel f<1> and longitudinal movement of the paper tube when the wheel f is at that point. The wheel f is, after each rotary movement, brought to proper position to engage the grooves r<1> &c. by a spring p<1> engaging a star-wheel q<1>. Another arrangement for setting the wheel f<1> to engage the grooves is described and works in conjunction with means for engaging and disengaging the escapement. In the hub of the escapement-wheel j is a groove 8 engaged by an arm of a longitudinally-movable shaft or rod under control of the operator. The escapement-wheel also carries a disc on which is a stop 7, which, when the wheel j is moved out of engagement with the fixed dog 5, is in position to engage a fixed stop and arrest the parts at a zero or normal position. To the longitudinallymovable shaft or rod is attached a cord connected to a curved sliding bar having an arm for positioning the wheel f<1>. The shaft which moves the wheel j also operates the part 12 of a clutch which puts a fly 13 in gear to prevent the parts from moving to normal position too rapidly when the escapement is disengaged. In a modification, an arrangement is provided for lifting the wheel f <1> from engagement with the paper tube when at normal position. This consists of a movable cam which is moved into operative position when the escapement is disengaged. The rubber band 19 which passes between the hammer P and type-cylinder W is on rollers 18, 20, and is moved by a pawl 15. The tubular support a is made in three sections w, x, y jointed together as at z, z<1>. The central section x is preferably made of iron, and the other two of brass.