US142485A - Improvement in perforators for automatic telegraphs - Google Patents

Description

2 Sheets-"Sheet I.

G. LITTLE. Perforators for Automatic Telegraphs". N0. 142,485. 7 Patented September 2,1873.

r 2 sheets -S heet 2. G. LITTLE.

Perforators for Automatic Telegraphs. No. 42,485, Patented September2,l873.

CIEIDDEIEI DECIDED UNITED STATES ATENT GEORGE LITTLE, OF RUTHERFORD PARK, NEW JERSEY.

IMPROVEMENT lN PERFORAT'ORS FOR AUTOMATIC TELEGRAPH-IS.

Specification forming part of Letters Patent No. 142,485, dated September 2, 1873; application filed March 5, 1873.

To all whom it may concern:

' is a specification:

The object of my present invention is to employ electromagnetism as the motor to project and withdraw the punches that perforate the paper, in order that the hand of the operator may be relieved of the jar and strain to whichit is subjected if the punches are projected by power applied by the finger or hand to the keys.

I employ two electro-magnets, one to project the punches to perforate the paper, and the other to withdraw the punches from the paper and return them to their normal position, and

the connections to these magnets are arranged so that when a finger-key is depressed the c'ir-- cuit to one magnet is closed and opened to the other, and the first magnet attracts its armature and moves a bar, which bar in turn moves a lever upon the under side of the depressed finger-key, and this lever acts upon the proper slides to move them and their punches and perforate the paper. When the finger is removed from the key, the key and its lever are moved upward by a spring and the circuit is broken to the magnet which has been acting, and is closed to the second magnet, and this, by its armature and lever, acts upon the slides and returns them to their normal position, withdrawing'the punches from the paper. The armature and bar of the first magnet is also returned to its place by this lever. The proper feed is given to the paper by the depressed finger-key acting upon pins on a rock'shaft, from which shaft motion is communicated to the drum over which the paper is drawn.

In the drawing, Figure 1 is a plan of a portion of my improved perforating-machine. Fig. 2 is an elevation of the mechanism for project ing the slides and punches and Fig. 3 is a vertical section at the line 00 a, showing the mechanism for withdrawing the slides and punches. The finger-keys a a, three of which are shown in the drawings, are to be of any desired number, according to the number of characters required to he perforated, and these keys are plm'trl side by side, as shown in Fig. 1, and

1 dent rm 0.

forma horizontal ran ge. The keys are hinged to the insulated bar b, and upon the under side of each key a lever, c, is pivoted at 2, and'a spring, d, keeps the key and its lever raised when the key is not acted upon by the finger. Beneath the range of finger-keys are the slides e e, and to them the punches h h are secured. These slides are placed at right angles to and extend the entire length of the range of fingerkeys, and upon one or more of these slides," at points contiguous to the levers 0, there are projections 3 3 for the lever c to act against When a key is depressed, as hereafter set forth. The

slides and punches are guided by the punches passing through the metal plates or blocks ff, and the slides should be supported and guided in a similar manner at one or more places in their length. i is a bar below and extending the entirelength of the range of finger-keys, and this bar is fitted to slide parallel with the slides 12 e. l l are pins or studs upon this bar i, one of which is adjacent to each lever c,- and m is the armature of the electro-magnetn, which armature is connected to said bar by the pen- (See Fig.2.)

. The operation of the parts thus far described is as follows: When a finger-key is depressed the lever 0 moves with it, and is in a position to act against the contiguous projection or projections 3 upon the slides c, and also in a position to be acted upon by its pin lupon the bar 2'. Upon the key touching the stop plate 1) the circuit from a battery is closed to the magnet n, and said magnet attracts its armature, moving the bar 6, and by "a pin, Z, the lever c of the depressed key is moved, and the proper slides are projected forward, and the strip of paper q perforated by the punches. To withdraw the punches from the paper, I employ the electro-magnet r, armature s, lever t, and projections 4-upon the under side of the slides e. The circuit to this magnet r is broken when the magnet 42 is acting, as next explained, and the armature s and its lever t are moved away from said magnet r when the slides e are projected by the pin 8 upon the bar 13 taking against the outer end of said lever t. When the finger is removed from the key, and said key forced upward by its spring, the circuit isbroken to n and closed to r, and the armature s is attracted, moving its lever 23, which takes against the projections 4, and returns the slides and punches to theirnormal position. At-the same time said lever it takes against the pin 8, and moves the bar 6 back to its place ready to. be projected when the circuit to n is again closed. A slight spring, 14, returns the lever c to place when the key is raised, and a stop-pin, 15, prevents the lever being moved too far by its spring.

I will now describe how the circuits are arranged to bring the magnets n 1" into action by the depression and elevation of a key, a. Each finger-key at its outer end is provided with an insulated arm, n, which projects downward, and

at its end is forked, so that one fork rests upon an insulated plate, w, and the other fork upon the adjoining plate when the key a is raised, and in this position the current from the battery enters by the binding-screw 6, and passes through the magnet 1' to the plate to, and by the various arms v and plates to to the binder 7, and back to the battery. When a key, a, is depressed, as aforesaid, the fork of the arm 1; is lifted from its plates to, and the circuit broken to the magnet 1; but so soon as the key touches the stop-platep the circuit to n is closed, and the current from 6 passes through a, and by wire 5, plate 19, key a, bar I), and wire to the binder 7, and the magnet n actuates the punches h alloted to the fin ger-key by the armature m, bar t, pin 1, lever c, and punch-slides e. The rising of the key breaks the circuit through 12, closes the circuit at w, energizes the magnet r, and draws back the lever 25, punch-slides e, and bar 6, the spring 18 aiding in this move- ,ment.

The die-plate 20 Fig. 4, against which the punches h h act to perforate the paper, is secured to the plate f in any suitable manner, and I prefer that the punches be shaped so as to perforate square holes, and that the punches be arranged in two rows, as heretofore usual. The strip of paper q passes through an openingbetween f and w and thence over the drum 1 w beneath the pressure-roller 10. The feed motion of this drum may be given in any desired manner.

I have shown the rock-shaft t I and pins 12 thereon acted upon by pins 13 011 the finger-keys; and from this rock-shaft motion is communicated by the link and crank 01 to the shaft o upon which is a clamp, c, that takes against an annular flange extending from the side of the drum 10 The pins 12 and 13 are positioned with reference to each other, so that the proper amount of paper for the character to be perforated and for the space between two characters is fed forward by the depression of the finger-key, and for the space between words and sentences a key, a may be employed that does not make contact with the bar 1),- hence the magnet n will not be energized, but the paper only will be fed.

The contact-roller 10 is upon an arm hinged to the standard 20, and drawn down by a spring,

21, and a spring, 22, serves to raise the arms 12 and 12, and restore the parts to a normal position.

The hart might be reciprocated by mechanical means, instead of the magnet n.

I claim as my invention- 1. The levers 0 hinged to the keys at, in combination with the punch-slides c and mechanism for actuating the same, substantially as set forth.

2. The electro-magnet a, bar 2', and pins Z, in combination with the keys at, levers c, and slides e, substantially as set forth.

3. The magnet r and lever t, in combination with the slides c and punches h, for returning the punches to a normal position, as set forth.

4. In combination with punches and fin gerkeys, for perforating or embossing telegraphic paper,two magnets and their connections, substantially as set forth, for projecting and withdrawingthe punches, substantially as set forth.

Signed by me this 26th day of February, A. D. 1873.

GEORGE LITTLE.

Witnesses:

GEO. T. PINoKNEY, GHAs. H. SMITH.

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