US798143A

US798143A - Electric alarm-clock.

Info

Publication number: US798143A
Application number: US20642604A
Authority: US
Inventors: Joseph Mccarthy
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-05-05
Filing date: 1904-05-05
Publication date: 1905-08-29
Anticipated expiration: 1922-08-29

Description

PATENTED AUG. 29, 1905.

J. MOGARTHY. ELECTRIC ALARM CLOCK.

APPLICATION FILED MAY, 1904.

2 SHEETS-SHEET l.

l l l n l l l nl Inventor Attorneys.

Ygitnesses: u y M No. 798,143. PATENTED AUG. 29, 1905.

J. MOCARTHY. ELECTRIC ALRM CLOCK.

APPLICATION FILED MAY 5, 1904.

2 SHEETS-SHEET 2.

Witnesses: lnventorzfnaq (1.7 WWW By @WMI M Attorneys.

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' UNITED STATES PATENT OFFICE.

ELECTRIC ALARM-CLOCK.

Specification of Letters Patent.

Patented Aug. 29, 1905.

Application filed May 5, 1904x Serial No. 206,426.

To a/ZZ whom it may concern,.-

Be it known that I, JOSEPH MoGAR'rI-IY, a citizen of the United States, and a resident of the city of St. Louis and State of Missouri, have invented a new and useful Improvement in Electric Alarm-Clocks, of which the following is a specification.

My invention relates to alarm-clocks, and especially to alarm-clocks having' an electrically-operated alarm.

The principal objects of my invention are to provide an electrically operated alarm mechanism to which an ordinary alarm-clock may be connected, to provide an alarm-clock that may be caused to operate alarm-bells in a plurality of circuits, to provide means for operating either an alarm-bell on the clock itself or a distant alarm, and other objects hereinafter more fully appearing.

My invention consists in the parts and in the arrangements and combinations of parts hereinafter described and claimed.

In the accompanying' drawings, forming a part of this specification, and wherein like symbols refer to lik-e parts wherever they occur, Figure l is a front View of my improved alarm-clock with the front door raised. Fig. 2 is a rear view of the clock. Fig. 3 is a vertical sectional view on the line 3 3 of Fig'. 2. Fig. 4 is a horizontal sectional view on the line 4 4 of Fig. 2, and Fig. 5 is adiagrammatic view of the circuits.

The clock comprises a case 1 of any suitable form, but preferably ornamental, provided with a front hinged door 2. The latter is hinged at its upper edge and is fastened shut by a pivoted latch 3, which engages in a slot in the forwardly-projecting margin of the lower side of the case. The door is provided near its central portion with an opening of the proper shape to receive an ordinary alarm-clock. In the clock shown thc opening is circular". In this opening an alarm-clock 4 is mounted. The door is of wood or other insulating material, so that the clock is insulated except at the points where electrical conducting contact is desired. This is an ordinary alarm-clock with mechanical alarm mechanism, of which the "Ansonia clock may be taken as an example. The bell usually found on such clocks is removed and in its place a contact member 5 is arranged. The alarm-spring is Wound up and a stoparm 6 is soldered on the alarm-winding fingerpiece 7. A stop 8 is mounted on the clockcase in position to be struck by the stop-arm 6 and prevent more than a partial revolution of the latter. Thus thealarm-spring can never be Wholly unwound. The remaining parts of the clock-the interior mechanism, the time-winding finger-piece 9, the hour and minute hand setting button 10, the alarmsetting button 11, and regulating-lever 12- are unchanged.

In the rear corners of the

case chambers

13 and 14 are partitioned off and

primary cells

15 and 16 are placed therein. Cells of any type may be used, but dry cells are shown and preferred. By inclosing them in practically air-tight chambers evaporation of the moisture of the cells and their consequent deterioration is to a large degree prevented. A chamber 17 is partitioned off between the chambers .13 and 14 and an electric bell 18 of any suitable type is mounted therein.

The top of the casing is formed by a fixed top 19 and a hinged top 9.0. The front door 2 is hinged to the fixed top 19. The hinged top 2() is provided to permit the raising of the front. A spring-contact 21 is secured to the fixed top 19 and projects over a hole 22m the latter. Then the door is closed, the contact member 5 on the clock projects through the hole 22 and makes contact with the springcontact 21.

A contact-piece 23 is secured upon the partition just back of the clock in such position that it may be engaged by the alarm-winding finger-piece 7 when it rotates to the position at which it is stopped by the stop-arm 6 and stop 8.

At the front of the casing and upon the lower side thereof a contact 24 and switch 25 are mounted. A switch 26, having two contact-

points

27 and 28, is mounted on the rear side of the case. Two contact-posts 29 30 are also mounted upon the rear side of the casing.

The several contact members, switches, battery, clock, 85o., are connected by the electrical conductors as follows: A conductor 31 connects one terminal of the cell 15 with the switch 26. The contact-point 28 of the switch is connected with one terminal of the bell by a conductor 32, the opposite terminal of the bell being connected by a conductor 33 with the contact-piece 23 back of the clock. A conductor 34 connects the spring-contact 21 with one terminal of the cell 16. The opposite terminal of the cell 16 is connected by a conductor 35 with the switch 25, the contact Q4 of which is connected by a conductor 36 with the remaining terminal of the cell I5.

IOO

IIO

' prevented by the stop 3.

The operation of the parts described is as follows: When it is desired to set the alarm, the switch 26 is closed on the contact 28, the

switch 25 is closed, and the alarm-winding inger-picce 7, with its stop-arm 6, is turned back, as in the ordinary winding of the alarm, a part of a revolution, so as to break the circuit between the iinger-piece 7 and the contact-piece 23. The hour for the release of the alarm mechanism is set as usual. Then the hour determined upon has arrived, the alarm mechanism is released, as' usual, and the alarm -winding finger piece 7 rotates and makes contact with the contact-piece 23. rIhe circuit is thus closed. Further rotation is The circuit is as follows: cell 15, conductor 31, switch 26, conductor 32, bell 18, conductor 33, contactpiece 23, Enger-piece 7, clock 4, contact member 5, spring-contact 21, conductor 34, cell 16, conductor 35, switch 25, conductor 36 to cell 15 again. The bell will ring until the circuit is manually interrupted. The person to be awakened must get up in order to stop the ringing of the bell.

Other connections for operating alarms at a distance-as, for example, distant rooms of a hotelvare provided. A conductor 37 connects the contact 27 of the switch 26 with the contact-post 30. A vconductor 38 connects the companion contact-post with the contact-piece 23. The contact-

posts

29 and 30 may be connected to any exterior circuit 39 containing an electric bell 40 or a switchboard, by means `of which connection could be made with a plurality of bells.

For use in connection with the exterior circuit 39 the switch 26 is set on the contact 27. The circuit is then as follows: cell 15, conductor 31, switch 26, conductor 37, exterior circuit 39, conductor 38, contact-piece 23, finger-piece 7, clock 4, contact member 5, spring-contact 21, conductor 34, cell 16, conductor 35, switch 25, conductor 36 to cell 15 again.

The battery is shown divided in order to secure a symmetrical arrangement in the ease; but obviously both cells might be inserted at the same point in the circuit. The case shown is made of wood, and hence no other insulator for the contact-piece is necessary; but obviously the case could be made of metal or any conducting material and the contact-pieces insulated therefrom in the well-known manner.

@bviously my device is capable of considerable modification within the scope of my invention, and therefore I do not wish to limit myself to the specific construction shown and described. For example, the contact 23 may be located so as to make contact with the stoparm 6 instead of the iinger-piece 7.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. An electric alarm-clock comprising a case arranged to receive alarm-clock mechanism, an electric circuit comprising a source of current, a circuit-breaking switch and contacts arranged to be connected by the alarm-clock mechanism, an alarm-clock mechanism arranged in said cz se to connect said contacts, a second circuit in said case comprising an electric alarm, a third circuit external to said case comprising an electric alarm, and means for throwing` said second-mentioned and thirdmentioned circuits separately in series with said first-mentioned circuit.

2. An electric alarm-clock comprisingI a case, an electric circuit therein comprising a source of current, an electrically-operated alarm and separated contacts, and alarm-clock mechanism mounted in said case and having a lixed contact for engagement with one of said separated contacts and a winding inger-piece 'for engagement with the other of said separated contacts, a stop-arm on said linger-piece and a stop to prevent more than a partial revolution of said linger-piece.

3. An electricalarm-clock comprisingacase, a front door hinged at its upper side, a hinged top projecting' over said door, said door being provided with an opening to receive a mechanical alarm-clock, a primary battery, an electrically-operated alarm in said case and two separated contacts arranged in said case, said contacts being arranged 'for engagement with parts of said alarm-clock and electric conductors connecting said battery, alarm and contacts.

4. An electric alarm-clock comprising a case provided with a hinged door, an alarm-clock mechanism mounted on said door and provided with a fixed contact and a rotatable contact member, a circuit in said case comprising a source of current, an electrically-operated alarm, a switch, and separate contacts, one of said separated contacts being arranged for engagement with said fixed contact when said door is closed and the other of said separated contacts being arranged Vfor engagement with said rotatable contact member.

5. An electric alarm-clock comprisingacase IOO arranged to receive alarm-clock mechanism,