US408010A - Burglar-alarm - Google Patents

Description

(No ModeL) 2 Sheets-Sheet 1.. T. J. GORDON. BURGLAR ALARM.

Patented July 30, 1889.

SWUW VWOZ I anion 4W1:

@Wmma m,

M. PETERS. PMloLhhog-nphen Wuhingtnn. D. (1

(No Model.) I 2 Sheets-Sheet 2-.

' T. J. GORDON.

BURGLAR ALARM. No. 408,010. Patented July 30,1889.

UNITED STATES PATENT OFF CE.

THOMAS J. GORDON, OF OLATHE, KANSAS.

BU RG LAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 408,010, dated July 30, 1889.

Application filed April 13, 1889. Serial No. 307,100, (No model.)

To all whom, it may concern:

Be it known that I, THOMAS J. GORDON, a citizen of the United States, and a resident of Olathe, in the county of Johnson and State of Kansas, have invented certain new and useful Improvements in Burglar-Alarms; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of this invention, and is a plan view of the alarm mechanism. Fig. 2 is a section taken where the broken line :1; w is marked on Fig. 1. Fig. 3 is a section taken where the broken line y y is marked on Fig.1. Fig. 4 is a section taken where the broken line .2 z is marked on Fig. 1. Figs. 5 and 6 show the manner of arranging the wires connected with the alarm for windows and doors.

This invention relates to certain improvements in burglar-alarms for dwellings and stores; and it consists of the novel combination and their construction of parts, as will more fully appear from the following description.

In carrying out my invention I employ an alarm mechanism, which I will describe as follows: Within an inclosing-case A, secured to a suitable base a for putting it in posit-ion, is arranged a clock mechanism, including an escapement b and a hammer b, which is arranged to strike a gong bisuitably disposed upon the base or bracket a.

O is a transversely or horizontally arranged spring-pressed plate like bar adapted to have a sliding movement and to project through the side of the case A, its actuating end being provided with a knob c. This bar or plate 0 has near one end a shoulder c, which is adapted to rest against the hammer-rod and lock the striker or hammer in position, or hold it away from the gong when desired. This bar or plate has also a slot or aperture 0 therein near its other end, the purpose ofwhich will presently appear.

D is a spring-pressed locking-bar arranged at right angles to the bar or plate 0, and having in its outer projecting or upper end an aperture (Z for the convenient connection therewith of the wire 6, through which connection, as presently explained, is effected with the windows and street or outside doors. The inner or opposite end of the locking bar or rod D is adapted to engage or enter the aperture or slot 0 of the bar or plate 0 when it is desired to lock the said plate or bar O in position, the latter being pressed inward until its aperture or slot coincides with the inner end of the bar or rod D, permitting the springing thereinto of the rod or bar D.

Simultaneously with the inward movement of the bar or plate 0 it will be seen that by the contact of its shoulder 0 with the hammer-rod the hammer b will be moved away from the gong b and will be locked in that position, preventing the ringing or sounding of thelatter. Arranged crosswise of the looking rod or bar D, and having one end extending beyond the left-hand side of the inclosingcase A, is a rotary rod E, which has a knob upon its projecting end for convenient manipulation, and a transverse pin 6' through it, adapted to engage a projection or stop 6 upon the inside of the case A, to limit its rotation when turn ed by the hand applied to its knob. The rotary rod E has opposite the bar or rod D a notch or recess 6 and the rod or bar D has a notch or recess 9 coincident with the rod E.

It will be noticed that with the notch or recess e of rod E facing the rod D the latter is capable of movement, and when the rod E is rotated or turned, so as to cause the said notch or recess to face upward, bringing the convexity of the rod E into the notch or recess 6 of the bar or rod D, the latter is incapable of movement, therefore preventing any possibility of the accidental disconnection of the locking bar or rod D from the plate or bar 0 when holding the gong or bell hammer out of action or in its locked posit-ion.

The spring of the clock mechanism is wound by the application of the key to the shaft f, as will be readily understood, turning the key, of course, to the left. The wire 6 is passed along near the ceiling of the room overpulleys g, suitably disposed, and at points over the windows and outer doors it is severed and connected to rings g. From the rings g extend downward over other pulleys h suitably-disposed branch wires i,which are carried under the lower pulleys h and upward next to the windows and connected in any suitable way to the tops of the lower sashes. The attempted raising or movement of the sashes, it will thus be seen, would set off the alarm and give the required warning or notice.

In the application of the wires to the doors the connection is somewhat diiferent, the branch wires 01 being through an eye or pulley Q1 and having, attached to its end a drop-hook '5 which is adapted to engagevwith a fixed projection or catch 1' upon the'inside of the door at its extreme upper left-hand corner or at the opening side. From this it is obvious that the attempted opening of the door would send in an alarm. In order, however, to permit the occupant of the house to open the door without disturbing the alarm, I connect with the drop-hook i acord j, which is passed over apulleyj, slightly elevated with relation to the top edge of the door, and so arranged as to permit the cord j to extend down closely to the joint, whereby it maybe easily reached and manipulated with the door slightly opened by the hand placed through the open ing thus furnished. A ring 9' is applied to the lower end of said cord j, which is slipped upon a catch or hook 7c, projecting from the door-casing.

It will be observed that the relation of the hook i with the catch i is such that a limited amount of movement is permissible between the same previous to engagement, in order to allow of the slight opening of the door, for the purpose presently disclosed.

It will be seen that while any one ignorant of the presence of the detaching drop-hook contrivan ce just described attempting an entrance would cause the alarm to be sounded, yet by the inmate or occupant of the dwelling or house reaching through the small opening furnished by slightly opening the door, as above stated, andpulling upon the cord j, the drop-hook will be removed sidewise or laterally from the catch or projection 01 upon the door, and catching or slipping the ring 7' upon the catch or proj ection it the door. can be opened in the usual manner and admission obtained without interference with thealarm mechanism.

It willbe understood that my invention is equally applicable to barns, stables, or other out-houses.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. The burglar-alarm having the clock mechanism, the hell or gong hammer and gong or bell, in combination with the plate or bar having a shoulder acting upon the hammer, and a slot or aperture, the springpressed locking bar or rod engaging with the said slot or aperture and having connection with the windows and doors of a dwelling, &c., substantially as specified.

2. The combination, with the spring-pressed locking-rod engaging a slot or aperture in the spring-pressed plate or bar engaging with the bell or gong hammer rod, of the rotary rod or bar having a notch or recess facing the aforesaid locking-rod, substantially as specified.

3. The combination, with the spring-pressed locking-rod engaging a slot or aperture in the spring-pressed hammer-locking bar or plate, of the rotary rod having a notch or recess facing the aforesaid locking-rod, said latter-referred-to rod also having a notch or recess receiving the convex or rounded portion of the rotary rod, substantially as set forth. Y

4. In a burglaralarm, the combination, with the alarm mechanism, comprising the spring-pressed locking-rod, the spring-pressed slotted plate or bar engaged by said rod, the bell or hammer rod engaged by said plate, and the rotary rod or bar having a notch or recess facing said locking-rod, and the alarmtransmitting wire or medium, of the branch wire or its equivalent having a drop-hook engaging a catch or projection on the door and having connected to it a manipulatingcord, or its equivalent, passing over a suitably-disposed pulley, and means for holding the drop-hook away from the door, substantially as shown and described.

In testimony whereof I attixmy signature in presence of two witnesses.

THOMAS J. GORDON.

\Vitn esses: I

BENJ. AMos, D. F. MCKAIG.

Images