US545938A - briggs - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. 0. P. BRIGGS 8v W. R. PATTERSON.

TELEGRAPH RECEIVER.

(No Model.) 2 Sheets-Sheet 2. DJP. BRIGGS 8v W. R. PATTERSON.

TBLBGRAPH RECEIVER.

?, @wm @www We@ Patented Sept. 10, E95.

ORLANDO P. BRIGGS AND WILLIAM R. PATTERSON, OF CHICAGO, ILLINOIS, ASSIGNORS TO TIIE WESTERN ELECTRIC COMPANY, OF SAME PLACE.

TELEGRAPH-RECEIVER.

SPECIFICATION forming part of Letters Patent No. 545,938, dated September 10, 1895.

Application iled October l1, 1893.

To cel whom t may concern,.-

Be it known that we, ORLANDO I. BRIGGSV and WILLIAM R. PATTERSON, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Telegraph-Receivers, (Cases Nos. 6 and 99,) of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Our invention relates to telegraphic receivers; and it has for its object the construction of a receiver which will give a clear and perfeet record of telegraphic messages.

Heretofore generally two methods have been employed to record upon paper tape the telegraphic signals as received, one method consisting of printing with ink or by chemical process upon paper tape dots and dashes to correspond with signals transmitted by the sending operator. This method is objectionable, since the signals may be received so rapidly as to cause poor or improper impressions, and, further, the impressions are not permanent.

Another method in use has been the perforation of paper tape as 'it is fed between a punch and die, said punch and die each being actuated by independent mechanisms upon the transmission of signals. This method is objectionable because of Vthe difficulty of proper adjustment of the two operating mechanisms to work in proper unison and the liability of the apparatus to derangement.

It is the object of our invention to provide a receiver which will perforate paper tape to correspond with the telegraphic signals, whereby a permanent record is secured, and, second, to provide a receiver in which the punch and die used in perforating the paper may be operated by a single mechanism, making the simultaneous action of the punch and die certain.

Brieily speaking, our invention consists in the employment of electromagnets, which are adapted to actuate an armature upon the transmission of each signal, said armature, through the medium of levers, releasing the engagement of a dog with a pin or detent upon Serial No. 487.834. (No model.)

a wheel provided with a thread upon its rim when a telegraphic message is begun, which disengagement allows the motor mechanism of the receiver to be brought into operation.

A second wheel, mounted preferably coaxially engage with a lever which depresses a punch, 6e

a spring being provided to elevate the punch after each depression. When the aforesaid dog is released from engagement with the pin upon the threaded wheel upon the transmission of the first signal of a message, it is thrust out and allowed to fall in engagement with the extremity of the thread, but is constantly raised from engagement with said thread and thrust out as each signal is received until the last signal of a message is received, when the dog is allowed to resume its engagement with its pin. Thus during the progress of a message the punch is constantly depressed at regular intervals by the lever actuated by the pins upon the second Wheel and restored after each depression by its elevating-spring. The paper tape, however, is perforated by the punch only when a die is raised to meet it, which is upon the transmission of each signal.

Our invention will be more readily understood by reference to the accompanying draw-- ings, in which- Figure l is a front elevation of our improved receiving and recording apparatus with parts thereof iu section to reveal the hidden mechanism. Fig. 2 is a side view of a portion of ourapparatus with parts removed to show clearly the mechanism of our invention. Fig. 3 is a sectional View of a portion of our apparatus, taken on line 3 3 of Fig. l,`with parts of the mechanism removed and the dog shown in engagement with the outer end of the thread. Fig. Lt is a plan view of one of a pair of feed-rolls employed to feed the paper tape between the punch and die, showing its mounting and the means of controlling its frictional engagement with the second roll of the pair. Fig. 5 is an elevation of both of the feed-rolls. Fig. 6 is a detail of the mounting IOO of the punch. Fig. 7 is a view of a piece of paper tape with a part of a record that may be produced by our receiving apparatus shown thereon. Fig. S is a detail plan view of one of the guides employed to lead the paper tape from the feed-rolls.

Like parts are indicated by similar letters of reference throughout all ot' the views.

Electromagnets d d, are mounted upon a suitable base Z9 and are provided with an armature c, supported by an armature-lever c', journaled to framework d upon rod f. The armature-lever c is provided with two laterally-extending cylindrical projections g g, one of which is secured to rod f, preferably, for the purpose of adjustment by thumb-screw g. Rigidly mounted upon that portion ofthe rod f which extends beyond the framework d is a lever h, adapted to actuate another lever t' upon the transmission of each telegraphic signal. Lever t' is fulcrumed upon a pivot i', supported upon a bracket t2, mounted under base b. Upon the extremity of lever t, to the left of its pivot, is pivoted a die 7c, which is allowed vertical excursion within guide-block 7c', which die is elevated upon the transmission of each signal to meet the reciprocating punch by the engagement of lever h with lever il, as presently described. At the joint where the lever 7L engages with lever i the two levers are provided with sloping contactsurfaces, that upon lever h adapted to slide upon that upon lever t' when lever h is given aslight rotary movement through the medium of armature-lever c and rod fwhen the armature is attracted upon the transmission of a telegraphic signal. This action of lever t upon lever 'L' lowers the portion of lever i to the right of its fulcrum, and consequently elevates the portion of said lever to the left of its fulcrum, which causes the elevation of die 7a within lower guide-block k.

For the purpose of adjustment we place the surface on lever t' which is in contact with the surface on lever h upon a small block of metal l, whose position may be adjusted by burr-nut Z, which adjustment may be secured by jam-nut Z2.

vVhen the armature is restored to its normal position after the transmission of a signal, the lever 7L is swung away from lever 1,', when the retractilc spring elevates the portion of lever t' to the right of its fulcrum, causing the die 7c to be lowered away from the punch. The retractile spring m keeps the sloping surface upon lever iin engagement with .the sloping surface upon lever 7L, thereby limiting the elevation of die k.

Extending upwardfrom the armature-lever c is a rod n, upon the upper end of which is mounted a bifurcated guide-block n', between the jaws of which is engaged a tongue n2, rigidly secured to a rod n3, securely mounted'upon one end of which is a dog n4, which is in engagementlwith a threaded wheel o, which has motion imparted to it by the motor mechanism of the relay when said dog is released from its normal engagement with the threaded wheel. This normal engagement of the dog n4 with the wheel 0 is through the medium of a pin o', from which the dog is disengaged upon the transmission of the first signal of a message, as presently described. When this lirst signal is sent from the operators station to the receiver, the armature c is attracted, which causes the armature-lever c to be rocked sufficiently to release dog n4 from its engagement with pin 0 through the medium of rod n3, tongue n2, bifurcated guide-block n', and rod n, thus releasing the motor mechanism. Then the dog n4 is thus elevated, the repellent spring q presses against the tongue n?, and thereby shoves the rod n3 and dog n4 outwardly until collar q impinges against the framework d, as shown in Fig. 3. When the first signal is completed, the magnets lose their attractive force and allow the armature to assume its normal position, the dog n4', through the medium of its operating parts, resuming its normal lowered position. In resuming this position the dogn4 comes into engagement with the outerend of the threaded Wheel o, and, assuming that no additional signal is sent, resumes its engagement with pin o', thereby arresting the further operation. of the motor mechanism; butduring the progress of a message the dog n4 is lifted from engagement with the thread upon the wheel and shoved outward by the repellent spring q as often as signals are sent. A wheel r is mounted preferably coaxially with wheel o, upon the periphery of which are mounted at regular intervals a suitable number of pins r rr, which as the wheel rrotates make successive engagement with the cam s upon an end of levers', pivoted at s2. As each pin r comes into engagement with cam s the portion s3 of lever s is elevated and the portion s4 correspondingly lowered. The portion s4 of lever s acts to lower the punch-actuating rod t, preferably through the medi um of an adjustable set-screw t. The punch-actuating rod depresses punch u when it is itselt` depressed. After the passage of each of the pins r r r from engagement with cam s the portion s4 is elevated by the overbalancing-weight of portion s3, when the repellent spring o, through the medium of collar u', elevates the punch u and punch-rod t, preparing them for another depression by lever s. Guides w w are provided for the punch-rod. The punch is thus kept constantly reciprocating during the progress of a message; but it is only when the die 7c is raised to meet it that the paper tape is perforated. It is obvious that, as the wheel r is rotated Very rapidly when the motor mechanism is released, if the lever s were not limited in its pivotal motion the impetus given by the impingement of the pins r r r upon cam s would cause the punch to descend too far, and thus become fast in die k, or the overbalancing-weight of portion s3 would allow the punch IOO IIO

IZO

to be elevated irregularly, which would cause an improper spacing between the punchmarks. For the purpose of properly controlling the pivotal motion of lever s we provide adjustable stops w w', mounted in brackets L02 wz above and below the lever s.

1AVihen the last signal of a telegraphic message is received, the dog n4 is shoved out and brought into engagement with the extremity of the thread upon wheel o, and as the rotation of the wheel o continues the dog n4 is brought into engagement with pin o', thereby stopping the motorinechanism. This thread is long enough to afford distinctive spaces between separate messages.

To feed the paper tape between the jaws u u', we provide two feed-rolls, one arranged below the tape and the other w arranged above the tape. tion imparted to it by the motor mechanism of the receiver. It is provided with two ridges m2 ft2, which bear upon corresponding but broader surfaces :r3 m3 of feed-roll at. These bearing-surfaces are preferably made rough or knurled to secure good engagement with the paper. To guide the paper tape between the jaws u u,we provide guides 004 m4, between which the paper tape passes. These guides are similar in construction, a detail of one being shown in Fig. S. Theirends are rounded off into noses 005 005, which project within the annular spaces x6 :ci of feed-ro1ls sc and 0c. .An elliptic space separates the guides, as shown, so that the paper tape may be allowed to bunch and yet be held in proper line when it is retarded by the punch.

The lower feed-roll so is mounted on lever y, fulcrumed at y', and it is adjustably held in frictional engagement with feed-roll 0c by repellent spring ys, the adjustment being had by screw y2.

To guide the paper tape properly between the feed-rolls, we provide a guide a upon lever h and a guide z upon standard z2. The paper tape may be wound about a reel z3, which is supported upon a standard Z4. The adjustment of the armature may be had in any wellknown way.

rlhe motor mechanism we have not deemed it necessary to describe, since any form of motor mechanism may be employed with our invention.

W'e have shown one means of vibrating lever s; but it is obvious that other means may be employed.

We do not desire to limit ourselves to the precise construction shown, as modifications may readily suggest themselves without departing from the spirit of our invention; but,

Having thus described ourinvention, what we claim as new, and desire to secure by Letters Patent, is`

1. In a telegraphic register, the combination with a continuously operating punch, of

va die adapted to be brought in engagement with said punch only upon the transmission of a signal, substantially as described.

2. In a telegraphic register, the combination with a continuously operating punch, of a die adapted to be brought in engagement therewith whenever a signal is transmitted, and means for bringing the paper tape between said die and said punch, whereby perforations in said paper tape are made to correspond with messages to be received, substantially as described.

3. In a telegraph instrument, the combination of a wheel adapted to vibrate a lever, a punch adapted to beactuated by said lever, and a movable die adapted to operate in connection with said punch to perforate paper tape upon the transmission of each telegraphic signal, substantially as described.

4. In a telegraph instrument, a lever adaptn ed to be vibrated, a punch adapted to be operated by said lever, and a die adapted to be brought in engagement with said punch upon the transmission of each signal, substantially as described.

5. In a telegraph instrument, the combina tion with a single motor mechanism, of a punch adapted to be actuated thereby, a mov able die adapted to be brought in engagement with said punch by said single motor mechanism and means for feeding paper tape between said die and said punch, and forI bringing said die and said punch in engagement when a signal is transmitted, whereby a record is made in said paper tape, substantially as described.

6. In a telegraph instrument, electro-mag` nets a., an armature c adapted to be actuated thereby, an armature lever c supporting said armature, rod f, lever h, lever t, die la, retractile spring-m, guide block; 7o', a rod n, guide block n', tongue n2, rod n3, dog n4, pin o normally in engagement with said dog, a repellent spring q, a wheel r, pins r r r supported thereon, lever s adapted to make successive engagement with said pins as said wheel is rotated, rod t adapted to be actuated. by said lever, punch u adapted to be operated by rod t, spring c adapted to restore punch u to its elevated position after each successive engagementof lever s with pins r r r', feed rolls was adapted to feed the paper tape between the punch and die, substantially as and for the purposes set forth.

7. In a telegraph register, the combination with a continuously acting punch, of an electro-magnet, a lever adapted to be moved by said electro-magnet and to bring the die in engagement with said punch, whereby a record of the messsge sent is made by the perforations in paper tape, substantially as described.

8. In a telegraph register, the combination with a die adapted to rest against the paper tape upon the transmission of a signal, of a IOO punch actuated by the lever, and a wheel pro- In witness whereof We hereunto subscribe vided with projections, said wheel being our naines this 26th day ofJiine, A. D. 1893.

adapted to rotate while a message is being transmitted and to bring said projections against said lever, whereby said punch is made to vibrate continuously during the transmission of a message, substantially as described.

ORLANDO P. BRIGGS. WILLIAM R. PATTERsoN.

Witnesses GEORG-E L. CRAGG, CHARLES A. BROWN.

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