US239076A - Watchman s electric register - Google Patents

Description

W. A. WILSON. Watc'hmans Electric Register. No. 239.076. Patented March 22,1881.

Km Y 21' I weJsar: fiz'l/eafazr N. PETERS, PHOTO-UTHQGRAPHER. WASHINGTON, D C.

UNITED STATES PATENT OFFICE.

WILLIAM A. WILSON, OF NEEDHAM, ASSIGNOR TO JOSEPH H. ALDEN, OF BOSTON, MASSACHUSETTS.

WATCHMANS ELECTRIC REGISTER.

SPECIFICATION forming part of Letters Patent No. 239,076, dated March 22, 1881.

Application filed February 27, 1880.

1'0 all whom it may concern Be it known that I, WILLIAM A. WILsoN, of Needham,in thecountyof Norfolk and State of Massachusetts, have invented certain new and useful Improvements in VVatchmens Electric Registers; and I do hereby declare that the following, taken in connection with the drawings forming part of this specification, is such a full,clea'r, and exact description thereof as will enable others skilled in the art to make and use the same.

The nature of my invention consists, first, in so arranging the device by which the frictionrolls are held in place that the act of moving the rolls from or to their working place shall cause a temporary holding mechanism to come into action to prevent the paper from running down by its own gravity when not in use or leave it free to be drawn down by the rolls when in use; second,in an arrangementfor moving the stylus in a right line across the paper without the use of guide-rods or a stylus-block, thus avoiding nearly all the friction of the ordinary instruments in use; third, in so arranging the train of wheels as to engage a stop-arm fastened to the armature-lever and acting directly upon the wheels, thus avoiding the use of intermediate mechanism; fourth, several minor improvements which will be fully set forth in the specification fifth, constructing the instrument with a combined bed and back clockplate, which, with the front clock-plate, will hold the registering and, if desirable, the timeclock movements in an immovable adjustment with the other parts, and also avoid the use of Superfious angles and parts liable to get out of order.

The devices may be best understood by ref erence to the specification and drawings, and are especially pointed out in the claims.

Referring to the drawings, Figure l is an elevation showing my device for moving the stylus across the paper, the stop-arm and the stop-pin acting with the armature-lever, and a front View of the friction-rolls and frictionsprings and lever for holding or moving the rolls in place. Fig. 2 is a side elevation of the same, and shows the bent arm for holding the paper in place when not in use, also the general construction. Fig. 3 is a vertical crosssection, showing in detail the mechanism for operating the friction-rolls and holding the paper in place. Fig. 4 is an enlarged view of the swinging stylus-arm, showing its perpendicular motion as the stylus moves across the paper.

In Figs. 2 and 3, E represents a strip of paper such as is used on instruments of this character with time-marks printed on its margin and extendingdownward through the guide G and back of the cross-bar F and between the friction-rolls D and H. These rolls are operated by a clock, from which motion is communicated to H through a gear-wheel on the shaft H, so regulated that the motion of the paper, as it passes over the stylus-point, shall be equal to the time-marks upon its margin, thus indicating the clock-time at which every puncture is made by the stylus.

In Figs. 1, 2, and 3, M represents an electromagnet, which, when in use, is put in circuit through the wires M, with a battery and a series of automatic circuit-closers of the ordinary character, each having its specific number of contact-points. ThemagnetMh-asan armature, 5 A, fastened to a bent lever, A., hung on a fulcrum-shaft, A and having at its lower end a T-shaped piece, A, from which the stop-arm A projects. The stylus B is fitted loosely in the end of the swinging arm B, having a slot in its lower end which slides upon the pivot B but being hung on the secondary arm 13,, which is pivoted to the angle B and is of such a length and pivoted at such a point on the long arm as will make the outside ordinates equal and cause the stylus to move across the paper in a rightline. Afiixed to the arm Bis a projecting catch, B which engages wit-h the toothed wheel 0. This toothed wheel is fixed on the shaft 0, and is moved by a train of wheels operated by a weight or spring, and is held by a stop-pin, G affixed to the wheel next in train to the shaft 0. The relation of the wheel on shaft C to the pinion next in train is as seven to one, so that a revolution of 5 the wheel with the stop-pin C will turn the toothed wheel one-seventh. round, or one tooth. The stop-pin O engages with, and is in turn held by, the stop-arm A%. When an electric current is sent through the magnet M the ar 10o mature A is drawn down and the lever A throws the T-piece A and, disengaging the stop-arm A the wheel-train rotates the toothed wheel 0, which, engaging with the projection B moves the swinging arm B to the right, carrying the stylus B across the paper. Durin g the journey of the stylus across the paper a distinguishing number of currents is sent by the circuit-closer and through the magnet operating the armature and angle and T-piece A, which strikes the stylus B and thereby punctures the paper with the necessary .number of marks. The circuit-closer being regulated to move with the wheel-train, the last current is transmitted before the wheel on which is the stop-pin O has made a complete revolution, and, the lever A being at rest, the stop-arm A is in place to engage with the plll G which, when it comes round, is thus held in place ready for another record.

When not in use it is desirable to take off the pressure from the friction-rolls D, so that the paper maynot run to waste; butin so doing, if not otherwise provided for, the paper, by its own gravity, runs down into the bottom of the case. To prevent this I have invented the holding mechanism shown in Fig. 3. D is the frictionroll, raised from the paper and hung by the shaft D to the springs D, which are affixed to the blocks and shaft D actuated by a hand-lever, D Aftixed to the same blocks and shaft- D is a bent rod, D A movement of the lever D moves all the parts simultaneously around the common central shaft, D and in moving the lever up I take the pressure of the rolls D, and at the same time press the bent rod or arm D against the paper E, pressing it against the cross-bar F and holding it in place, so that it will not run down. By pressing the lever D down the friction-roll D is forced against the roll H and the paper is drawn down, as hereinbefore described. At the same time the bent arm D is thrown back, and, the paper no longer held against the crossbar F, its motion is unimpeded.

By the use of the swinging arm B and its compensating mechanism I avoid the use of the sliding stylus-block and guide-rods, which are objectionable, in that they cause useless friction, and, beingoperated by clock-work, are

easily got out of order by the dust and dirt gathering on their extended and exposed bearin gs, and by the rust which often gathers on the guide-rods.

In construction I use a bed-plate, K, to which are fastened the angles K and K and the posts K To the posts K and the angles K is fastened the front clock-plate, K, by the screws K Between the bed-plate K and the front plate, K, is placed the clock-work for registering, and, when not otherwise provided for, the time-clock also. The bed-plate thus answers the double purpose of holding the parts to one solid base and of a back clockplate. The angles K are braced by the paperguide G. By this construction I save the cost of many useless parts and get a simpler and stronger instrument, with every part easily accessible and more efficient than heretofore.

I claim 1. In combination with the electric registering mechanism, the bent arm D pressure-rolls D, and lever D acting on the paper F, sub stantially as described.

2. In an electric registering-instrumenthaving a stylus operated by a magnet through an armature, a stylus-carryin g device, which consists of a swinging lever, the movement of said lever being so compensated that the stylus moves in a straight, or nearly straight, line in traversing the paper.

3. In an electric registering-instrument, the combination of the magnet M,its armature A, and lever A with the stylus-carrying device B B and stylus B, all arranged to operate together substantially as described, and for the purposeset forth.

4. In combination, the magnet M, armature A, and lever A, and stop-arm A, with the stop-pin substantially as described, and for the purpose set forth.

5. The combination of the combined bedplate and rear clock-plate, K, with the anglepiece K and front clocleplate, K, substantially as described, and for the purpose set forth.

WILLIAM A. WILSON.

Witnesses:

WILLIAM EDsoN, FRANK G. PARKER.

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