US448712A

US448712A - Electric time-alarivl

Info

Publication number: US448712A
Authority: US
Publication date: 1891-03-24
Anticipated expiration: 1908-03-24

Description

(No Model.)

J. J. GALLAGHER. ELECTRIC TIME ALARM.

No. 448,712. Patented Mar. 24,1891.

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UNiTED STATES PATENT OEEicE.

n JOHN .T. GALLAGlllCR, Oh S'l. LOVlS, MISSOURI.

ELECTRiC TiME-ALAREW.

FPECIFICATION formingpart of Letters Patent No. 448,712, dated March 2 i, 1891.

Application filed November 28, 1890. Serial No. 372,901. (No model.)

I (L /T13 whom may concern:

Be it known that I, Joan J. GALLAGHER, of the city of Louis, in the State of )ilissouri, have invented certain new and useful Improvements in Electric Alarms for Clocks, of which the following is a full, clear, and exact description reference being bad to the accompanying drawings, forming a part hereof.

Myinvention relates to improvements in electric alarms for clocks; and it consists in the novel arrangement and combination of parts, as will be more fully hereinafter described, and designated in the claims.

In the drawings, Figure 1 is a front elevation of my complete invention, showing the electric bell the clock, and the drop-weight for making electrical contact set and in a position to be tripped. Fig. 2 is a vertical section of the same, showing the electrical eonnection between the battery and electric bell and also the construction of the electrical contact device or push-button. Fig. 3 is a perspective view of the attachment device connecting the clock and the drop-weight.

The object of my invention is to provide a simple and effective electrical alarm or device for attachment or connection to clocks for making or giving an ominous sound or noise or alarm at some predetermined time, as desired by the operator.

The ineffective alarm or sound produced by ordinary alarm-clocks is well understood, the ineffectiveness, however, arising from only a short or temporary alarm being produced by the clock, as the mechanism is so defectively constructed that it is incapable of pro ducing a continuous sound, so as to arouse the slumberer.

Referring to the drawings, 1 represents an ordinary alarm-clock, which I employ in carrying out my invention, and 2 represents the shaft of the alarm attachment. The connecting-cord 6 is attached to a spool or bobbin 7, which is provided with internal screw-threads and adapted to be screwed. on the end of shaft One end of said connecting-cord 6 is also attached to a trigger S. The ordinary shaft which rotates when the alarm goes oil may be provided either on the outside or inside of the shell i of the clock with a perforation or aperture, through and in which said connecting cord 6, which is essential in carrying out my inventiou,is adapted to be attached. Should the perforation be formed in said shaft on the inside of the shell of the clock, a perforation should be made in said shell to permit the cord to pass there-through in its functional operation. lftheperforation should beformed in the stem on the outside of the shell, there is no necessity fora perforation being formed therein for the passage of said cord. Said trigger consists of a piece of wire or other suitable material, one end of which is bent into and forms an eyelet 9 and projects outwardly from the body of said trigger and forms a catch or support 26 for the plate 10 and drop-weight ll.

.2 indicates a box or receptacle for an ordinary battery 13. To one side of said box or receptacle an electric bell ll, of ordinary and usual construction, is attached in any suitable and appropriate manner.

represents conducting-wires, which are connected to the positive and negative poles of the electro -magnet of the electric bell. Said wires pass through suitable perforations made in the side of the receptacle 12 and are connected one to a contact-spring 16 of the push-button 17 and the other to the positive pole 18 of the battery. The negative pole 19 of said battery is connected to a contact-spring 20 of the push-button by means of the conducting-wire 11 is a drop-weight which is secured to a plate 10, which is adapted to rest on supports One end of said plate which supports the drop-weightrests on a transverse strip 2i as a fulcrum. The weight of the drop weight is adapted to be principally supported when it is tripped by the push-button 17.

Having given an explicit description of my invention, 1 will now proceed to describe its application and use. The operator or the person to be awakened should set the alarm of the clock at any predetermined time, as he may desire. The connecting-cord 6 should then be attached to the shaft of said alarm and the trigger 8 set under one end of the drop-weight l1, keeping always said connecting-cord in a taut condition. Then the alarm goes off at the time set, shaft 2 will rotate and carry round it said connecting-cord,

' of the same, whereby electrical contact is formed between said springs. The electric current generated in battery 13 passes from the negative pole 19 of said battery into conducting-wire 21, then into contact-spring 20 of the push-button, and from the said spring it is adapted to be transmittedtospring 16 of the push-button, and from spring 16 it is transmitted to one of the poles of the electromagnet, thence through the coils of said electro-magnet, and from said coil it emerges and passesout' through wire 15, which wire is connected to the positive pole 18 of battery 13. Having described my invention, what I claim is-- 1. In an electric alarm for clocks, the combination of a drop-weight 11, a trigger 8,provided with an eyelet 9 and catch 26 for setting said weight, a connecting-cord 6, secured in said eyelet and adapted'to be operated by I an alarm-shaft2 for tripping said weight, and a circuit-closin g device adapted to be operated by the same, substantially as set forth.

2. In an electric alarm for clocks, 'the combination of a drop-weight 11, a trigger 8, provided with an eyelet 9 and catch 26 for setting'said weight, an alarm-shaft 2, a spool 7, adapted to be received on the end of said shaft, a connecting-cord 6, secured to said trigger and said spool for tripping said weight, and a circuit-closing device adapted to be operated by the same, substantially as set forth. p I v "he combination of a battery 13, a receptacle 12 for the reception of said battery, an electric bell14t, secured to said receptacle, an alarm-clock 1, provided with ah alarmshaft 2, a detachable s'pool 7, adapted to be received on said shaft, contact-

springs

16 and 20, situated apart and one above the other, a drop-weight 11, located above said' springs, a trigger 8 for setting said weight, and a connecting-cord 6, attached to said alarm-shaft and to said trigger for tripping said weight, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN J. GALLAGHER.

Witnesses:

C. K. J ONES, E. E. LONGAN.