US1513229A - Alarm - Google Patents

Description

Oct. 28 1924.

. 1,5135229 H. F. DEMMER ALARM Filed Feb. 28'. 1923 ffi'emmer Paented ocgzs, 1924.

UNITED STATES HENRY FERDINA'ND DEME/LER, GF BALLINGER, TEXAS.

ALARM.

Application filed February 28, 1923.

To all vwho/'a 'it mog/ camera Be it known that I, HENRY F. Dnrininn, a Citizen of the United States, residing Ballinger, in the county of Runncls and State of Texas? hare invented certain new and useful lmprovcments in ..-l.larms, of which the following is a specifioation.

This inrention relates to automaticall.V sounding alarms and its primaryv object to provide a simple and efiicient mechaism whereby, when the door of a garage or lil-:el structure isopened, an alarm will l is ne sounded and notice thereh'y given so that7 if the opening is unauthorized, the intrusion will be at once detected. The invention is intended primarl)7 for use to prevent theft of automobiles and is so a-rranged that? when the door of a garage is opened.l the horn of the automobile will he sounded. The invention includes means for holding the alarm inoperative while the door of the z'arage is open and the .ffjarage is occupled by the owner of the Vehiele or other authorized persons, the said means being so arranged as to be released when t ie door is closed and the alarm thereby "or operation. The stated objects of the invention, and other objects which will her inafter incidentally appear, are attained in such 1:.

device as is illnstrated in the aceompanyng drawing. and the invention resides in certain novel features which will he particulfcrlj,Y pointed out` in the appended claims.

In the drawing:

Figure 1 is a view, partly in plan and partly in horizontal Section, showing my improved alarm as arranged in a garage, and

Fig. 2 is an enlarged perspective viewof the operating parts of the alarm showing them as they are arranged when the garage is to he 'occupied without the alarm sounding.

In the drawing, the reference numeral l indicates portion of a garage and 2 a pertion of ztn-automobile therein equipped with a horn 3 which mav be of any well-known or preferred type operated from the battery or magneto of the car. In carrying out my 11 vention,V l provide within the garage a bracket or supporting plate 4 which may he secured in any convenient manner at a point in or adjacent the horizontal plane of the upper end of the door 5. Extendinn' through and rigidly secured in the said suppo 1ting plate are terminals 6, to which are attached conducto-rs 7 and 8 (see Fig. 2) which are to be connected with theyhorn and battery lustrated as co..

serial. No. 621,822.

of the automobile so that if a circuit be closed through the terminal (5 the horn will be sounded just as though in use upon the road. One of the terminals (3 eonstitutes the "fulcrnm or pivot for a circuit-closinnY level' 9 which extends to both sides of said terminal. and has a spring 10 attached thereto near one end7 the opposite end of the Spring being secured in a convenient manner to the supporting plate 21-, as will be most readil'yv understood upon reference to Fig. 2. The lever 9 may be of ai conve ient form and is iltructed from a single strand of stout wire having its ends brought together, as shown at ll, and having eyes l adanted to eno' oartlv nh ol? the cireuit-clo Ang leve' fie bi her. V

V i. secured rigidly to the door near the efloe thereof and near the upper end su ne in position to imp a`4 inst the end of the 'ircnit-closing lever when the doorY is Closed. i

lVhen it is desired to perform any work within the Garage or for other reason the garage is to ne occupied or the door left open and it is desired to prevent sounding of the alarm, the latch 13 is swung into position to engage the wider operating' or handle end of the level` 9, as shown in Fig. 2-, and the length of the latch is such that,V when it so engages the lever., the spring-attached end thereof will be held out of contact with the adjacent terminal 6 against the tension of the sprino' 10 so that the Circuit through the lever will be broken, the Spring acting upon the lever with suf'icient force to hold it in engagement with the latch so that the latch will be gripped1 and between the lever and the loop 15 and the contact end of the lever will be maintained out of engagement with the terminal, as will be readily understood. It will be noted that the bracket 14: has one end turned downwardly, as shown at 17, whereby it may be rigidly secured to the door and the opposite end of the bracket is turned upwardly, as shown at 18, to provide an former at intermediate portions of its length d is 'owner 'or occupants of the adjacentdwelliabutment or lever-striking lip which will project into the pathof the levei` 9. rl`he bracket or switch-throwing arm 14 is so arranged and of such length that, when the door is fully closed, the bracket will pass beside the latch and the lip or Striker 18 will project beyond the end of the latch 13 and will impinge against the lever and swing the.

same slightly about its pivot, whereupon the latch will be released and will drop into the position shown in dotted lines in Fig. 2, the Spring 10 being put under greater tension and the contact. end of the lever being moved a slightly greater distance from the adjacent terminal 6. If the door be then Vopened, the bracket will be withdrawn whereupon spring 10 will contract and at once draw the contact end of thelever against the adjacent terminal 6 'so that the circuit ill be closed Vand the horn of the automobile sounded, the horn continuing to sound until the circuit is again broken. Obvously, if the opening of the garage by some unauthorzed person, the

ing-will at once become aware of the intrusion and may take such action as will vresult in the arrest of the intruder and prevention of the threatened theft of the automobile. The attachment of the conductors 7 and 8 with the horn and the body of the automobile are,V of course, detachable sothat, when the 'automobile'is to be used,

they may be readily separated from the carl' v If so desired, the device may be connected with a bell 22 and a switch 23 in the dwelling Vso that in the night time if the switch 23 be 'closed and the door of the garage should then be opened, the alarm will be sounded in the dwelling and the occupants notified of the conditions. i

My device is exoeedingly simple in the construction and arrangement 'of its parts,

it may be very readily applied to any ga-rage i at a very slight expense, andl will prove highly efiicient in use for the purposes for which it is designed. V

Having' thus descibed the invention, what is claimed as new is:

1. In an alarm, the combination of fixedV electric terminals, a switch lever fiilci'umed upon one of the terminals and extending past the other termmal,V yieldable means connected with the lever and vtending constantly to effect' contact between the lever and sad othertermnal, means adaptedto 'directly-engage the switch lever and hold it out kof contact with said other terminal in'opposition to said yieldable means'9 and means carried'by a moving'part to directly engage 'the lever and release itfrom said holding means and maintain the lever out of contact with saidV terminal. V

2.' n a device for the purpose set forth, the combination of spacedelectric terminals,

a switch lever fulcrumed upon-one of saidl terminals and adapted to form contact with the other terminal, a sprng actng upon the contact end ofthe switch lever to move 'it into engagement with the adjacent terjacent terminal, the withdrawal of the vbracket permtting the lever to make 'con-- tact with the terminal.

In testimony whereof I affx my signa-' ture.

HENRY FERDINAND DEMMER. [L.S.]

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