Patent GB-191421275-A (GB)
Title: Improvements in or relating to Adding Machines.
Inventor: WADE HAROLD
IPC: B41J11/48
Filed: 1914-10-20
Granted: 1915-07-01
Abstract: 21,275. Wade, H., [Burroughs Adding Machine Co.]. Oct. 20. Adding-apparatus with operating-means; adjusting for recording only; column-spacing.-In Burroughs and like adding and listing machines of the type described in Specifications 3516/10 and 25,068/11, provided with a reciprocating paper-carriage for listing in two columns, provision is made for listing items on a roll strip and for printing single items on separate articles, such as pay envelopes, including means controlled by the position of the paper-carriage for effecting duplicate printing and for ejecting the separate articles. (1) The platen roller is in two independent sections, a main section 2, Figs. 2 and 6, for the roll strip, of usual construction and connected to the line-spacing mechanism, and a shorter section 3 for the envelopes &c. equipped with means for receiving, feeding-in, and ejecting the envelopes &c., and not connected to the line-spacing mechanism. The envelope is dropped into a guide-shoot 6, Fig. 3, which directs it to a flattened portion 3<b>, Fig. 7, of the section 3, into position to be gripped by a rocking clamping-plate 7, which is normally held open against the action of a spring 8 by contact of a tail-piece 9<a> with a stop 10<a>. The section 3 is rotated to feed-in the envelope a definite amount bv means of a hand-lever 20, the clamping-plate 7 closing when clear of the stop 10<a>. A curved guide 10 directs the envelope around the section 3. (2) The means for rotating the platen by the hand-lever 20, Fig. 3, is identical with that described in Specification 15,107/14, [Class 100 (iv), Typewriters &c.]. The hand-lever 20 carries a pawl 21 for engagement with a gear-wheel 18 meshing with a pinion 17 on the spindle 3<a>, Fig. 6, of the section 3; a spring 50 returns the hand-lever. The backward throw of the handlever is determined by means of a pivoted stopplate 22 adjustable by means of a pawl 22 and a segmental rack 23; the pawl 21 is normally tripped by means of a stud 60 on the stop-plate 22. The forward throw of the hand-lever is determined by contact of the pawl 21 against a fixed stop 57 on the rack 23. (3) The return movement of the section 3 is effected bv means of a spring 30 connected to the gear-wheel 18, and is sufficiently forcible to open the clamping- plate 7 and shoot the envelope onwards into a stacking-receptacle 80. Shock of arrest of the section 3 is mainly borne by a stop-pawl 14 engaged by a stud 13 on the section to relieve the clamping-plate 7 ; rebound is prevented by engagement of a roller-stud 70 on the gear-wheel 18 behind a spring-pressed finger 71. (4) The stacking-receptacle 80, Fig. 3, is a rectangular box provided with an arched top and a projecting portion forming a mouth, and is secured on the platen frame with the floor of the mouth flush with the guide 10, Fig. 7. The front and top are provided with inspection openings, and the rear is open for extraction of the envelopes, but is normally blocked by a spring bail. (5) A spring detent 34, Fig. 3, holds the section 3 in its set position against the action of the spring 30. This detent engages with a notched disk 39, Figs. 3 and 6, adjustable on the spindle 3<a> of the section 3 to correspond with the setting of the stop-plate 22; for this purpose, the disk has a cone-and-socket connexion 42 with a spring-pressed drum 41 feathered on the spindle 3<a>. For releasing the detent to eject the envelope, the rock-shaft 96, Figs. 2 and 3, of the line-spacing bail 95, which is actuated in known manner at alternate operations of the machine to line-space the roll strip, is provided with an arm 100 and a loose plate 101 in spring connexion and carrying a spring-retracted wiper pawl 102. The pawl 102 is first rocked upwards and becomes interlocked with the detent 34, and then, in the return movement, releases the detent by a toggle action. (6) For the duplicate printing on the roll strip and the envelope &c.. a ' special repeat' key 150, Fig. 14, is provided and co-operates, through a sliding member 153, 154, with the lever 170 of a motor-drive control such as that described in Specification 18,628/06, and with the usual arm 622 in the connexions of the type-carrier detent release bail 219. The member 153, 154 is drawn forward by a spring 157, but is normally held retracted by engagement of a stud 152 on the part 153 with the hooked end of an arm 151<a> connected with the key 150. Depression of the key 150 releases the member 153, 154, so that a lug 154<b> on the part 154 engages a stud 622<a> on the arm 622, and a spring pawl 155 on the part 153 engages over a stud 170<a> on the lever 170; when the lever 170 is operated, the stud 170<a> rides over on to the top of the pawl 155. The member 153, 154 is automatically retracted after the duplicate print, by the line-spacing bail 95 through a stud 154<c> and arms 192, 191 on a rock-shaft 190. (7) The cam-plate 160, Fig. 2, on the carriage-reciprocating bar 14<a> is adjustable into three positions determined by perforations r, n, l in the bar engaged by a spring- pressed pin 160<a> on the plate, to set the machine to add in either the left or right hand positions. The construction shown requires the adjustment l so that the machine does not add when the carriage is in the left-hand position for printing on the envelope. (8) The carriage-reciprocating bar 14<a>, Fig. 2, is provided with a rack 63 connected through gearing 61 to a centrifugal governor 62.