US258458A - Burglar-alarfvl - Google Patents

Description

(ModeL) P. MORAN.

BURGLAR ALARM. No. 258,4 58

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e UNtTen States PATENT Greten PETER MORAN, OF PHILADELPHIA, PENNSYLVANIA.

BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 258,&5?, dated May 23, 1882.

' Application filed Man 22,1552. (Model) To all wlm it may coccrn Be it known that I, PETER MORAN, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in BurglanAlarms, ot' which the following is a full, clear, and exact description.

My invention relates to that class of burglaralarms in which a gong is struch by clock mechanism for giving the alarm 5 and to this end my invention consists in a novel eonstruction and arrangement ot' parts, as hereinafter fully described, and pointed out in the elaims.

Reference is to be had to the acconpanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l represents my new and improved burglar-alarm attached to the wall of a room with several cords or wires leading theret'rom to a door and windows. Fig. 2 is a front elevation of the alarm, the cover ot' the box in which the mechanism is contained being open; and Flg. 3 is a sectional elevation, taken on the line :v x of Fig. 2.

A represents the box in which the alarm mechanism is placed, which box is adapted to be Secured to the wall or to any pern'anent object by means of the rings (l, a or any other suitable means i'or securing the box may be employed.

B is the clock niechanism, which is ot' ordinary Construction, and does not require description in detail. U is the gong, and D D reprcsent the double-acting rods, of which there may be any desired number to suit the number of windows and doors with which it may be desired to connect the alarm. These rods D D are held in the box by means of the postsff', through which the rods pass, which posts are secured in the box by means of the plates i t", attached to or made integral with the posts, the said plates being perforated for the passage of screws or similar fastenings, as shown in Figs. 1 and 2; and these rods D D are made douhle-acting by means 'of the springsd, placed upon. the rods between the heads c of the rods and the post f', and any movement of the rods through theposts is communicated to the spring-held escapement-dctent E, which is pivoted to the side of the box by means ot' the pivoted plates'F, pins or studs b Z upon the plate E, and the pins or studs 71, secnred to or formed upon the said rods. The plates F are by preference made T-shaped, as shown clearly in Fig. 2, with the divided end j, the parts of which straddle the pins h, and with the diagonal faces or edges k k at the inner end of the plates, which come between and against the pins or studs b b, as shown; and there will be as many of these plates F as there are rods D.

To the outer ends of the rods D are sccured the setting wires or cords l, which pass out the end of the box between the horizontal frictonrollers c and the vertical friction-rollers c', and lead to the window or door with which it is desired to connect the alarm. The friction-rollers c and c' are held in the frame L, which is secured to the box in proper position, as shown* in the drawings, by means of screws or any other suitable t'astenings.

In case there are several rods D in the alarm, the plates F will all be pivoted upon the same pivot, j', suitable division-blocks beingplaced between them, and the pins or steps b Z in such case will be ot' suflicient length to reach past or above all ot' the plates F, so that the longitudinal movement in either direction ot' any one of the rods D will move the escapemeutdetent E and give the alarm.

Ncar the post f, through which the rods D pass, the' rods I) are perforated for the passage of the pin g, which is adapted to hold the rods against the action ot' the springs in such position that the escapement-detcnt will hold the alarm nechanism at rest.

In setting the alarm, the box having been first sccured to the wall or some other stationary object, and the pin g being in place, the cords l, any one or all of them, are first carried over suitably-arranged pulleys and drawn just tant and attached to the knob, catch, or any other part of the door or window. All of the cords (if more than one is to be used) having been thus attached, the clock mechanismtis to be wound up by the appliaction of a key in the ordinary manner and the pin g removed, so that the rods D will be held against the action of the springs by means of the cords l. In this position the alarm mechanism will still be at rest, and will remain so until one of the IOO windows or doors is opened or tampered with in such manner as to pnll or loosen the cord or wire l attached to it. In ease the oord be pulled, the spring d will permit the movement of the rod D, which Will move the plate F, which will move the escapement-detent and release the alarm neehanism; and should the cord or wire be cnt or loosened or otherwise moved out of its set position the spring d will force the rod downward or backword and will move the plate F, and in like manner also release the alarm mechanism and give the alarm. By this means it will he seen that any tanpering whatever with the oord or wire will certainly set the alarm mechanism in action.

By means of the friction-rollers c and c' it will be nnderstood that the cords l may he earried in any direction from the alarm and still move easily over the rollers, thus increasing the certainty of the action ot' the alarm.

Having thns described my invention, what I claim as new, and desire to secure by Letters Patent, is

, 1. The comhinatiomwith escapement-detent and alarm meehanism, of the spring-pressed slding rods D, and the plate F, connect-ing the rods with the detent, suhstantially as and for the purpose set forth.

2. The combination, with the escapenentdetentE, provided with the pins I), of the sliding rods D, provided with the pins h, and the T-s haped plate F, provided with the inclies k and the slot, snbstantially as and for the purpose set forth.

3. The combination, with the box A, provided with the perforated posts ff', and the detent E, provided with pins b, ot' the rods D, the springs d, and the T-shaped plate F, provided with the inclines Ic, snbstantially as and for the purpose set forth.

PETER MORAN.

Witnesses SAML. F. FLooD, Jr., FRAS. G. THoMAs.

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