US1118810A - Burglar-alarm. - Google Patents

Description

A. J. ROZBORIL.

BURGLAR ALARM.

APPLICATION FILED APR 19,1913

Patented Nov. 24, 1914.

1 1,7116% WW 1 WW w w 0 m H J W Z w m ANDREW J. ROZBORIL, OF PUEBLO, COLORADO.

BURGLAR-ALARM.

Specification of Letters Patent.

Patented Nov. 24, 1914 Application filed April 19, 1913. Serial No. 762,272.

To all whom it may concern:

Be it known that I, Annanw J. Roznonln, a. citizen of the United States, residing at Pueblo, in, the county of Pueblo and State of Colorado, have invented new and useful Improvements in Bi'irglar-Alarms, of which the following is a specification.

This invention relates to burglar alarms and more particularly to audible alarms which are actuated in the opening of a door, window or other closure.

One of the principal objects of the inven tion is the provision of simple and eflicient inccl'ianisiu actuated upon the opening of a window or door to explode a cartridge, wl'icreoy the impression will be given that the owner or occupant of the house is firing at the intruder.

Anothe and very important object of the invention is the provision of a device of this character employing mechanism which includes a lilllllllle and a trigger ar 'anged in. cmicting relation so that the trigger will hold the hammer in cocked position or in uncooked position removed from the cartridge, and whereby the hammer in uncooked position will hold the trigger out of the path of the sash or door so thateither of these parts may he operated without affectin g r the alarm.

Further objects of the invention will appear as the following specific description is read in connection with the accompanying drawing which forms a part of this application and, in which Figure 1 is a plan view showing the parts in operative position; Fig. 2 is a side elevation of the same; Fig. 3 is a side elevation showing the arrangement of the parts with the hammer in, uncooked position; and Fig. l is a top plan view of the device shown applied. to a window. ing, 1 represents a bascfprovided adjacent its ends with openings to receive attaching Referring more particularly to the drawdevices 2.

In Figs. 1 and 2 the device is shown secured to the frame of a door in such position that the trigger will be operated upon opening of the door, while in Fig. 4 the device is arranged upon the upper sash of a window and with the trigger lying in position to be actuated upon the raising of the lower sash or the lowering of the upper sash. Formed integral with the base is a raised cylinder member 3 and a lug 4: in which is ournaled a transverse shaft 5 having secured thereto 1 the hammer or striking element 6 provided with a cap engaging pin 7 adapted to strike the cap of a cartridge 8 when operated, as

will he hereinafter described, the said hammer having an upwardly projecting arm (3 for a purpose to be hereinafter explained.

The cartridge is arranged in a diagonal bore 1) formed in a raised boss 10 immediately forward of the shaft 5. Extending:

through the cylinder member 3 longitudinally of the base is a shaft 11 having one of its terminals bent to provide a locking extension 12 and having its opposite end bent at a point 13, to provide anoperating trigger-ll: which extends parallel with the extension 12. This trigger is adapted to lie over the armh of the hammer and hold the hammer in depressed position against the tension of the operating spring 15 which surrounds the shaft between the hammer and the lug -.l-. and is connected one end to each of these parts. In order to hold the trigger in depressed position there is secured to the base a small raised yoke 16 which is engaged by the offset end 17 of a spring 18 secured to the underside of the trigger, as shown.

In operation, the cartridgeis placed in the bore 8 and the hammer depressed to the position shown in Fig. 2, against the tension of the spring 15. The shaft 11 is turned in the cylindrical. member 3 by depressingthe trigger 1 1 so as to carry the trigger over the arm 6 of the hammer and to lock the spring 18 in engagement with the yoke 16. In this position the trigger is arranged over or in the path of the door or lower sash. as the case may be, and when either part is open the trigger will be raised sufliciently to disengage the spring 18 from the yoke 16. When this is accomplished the tension of the spring 15 on the hammer will throw the trigger to one side and permit the hammer to forcibly engage the cap 1 on the cartridge, exploding the same and sounding the alarm. When it IS desired to hold the parts in inactive position the trigger is raised and the hammer allowed to swing over toward this position the locking extension will hold the hammer out of engagement with the cartridge and the hammer will hold the trigger out of the path of the door or sash, thus permitting either of these parts to be operated without sounding the alarm. In other words, the locking extension 12 practically holds the hammer at half cock and should the trigger be actuated the throw of the hammer would be so small and the striking force so light that the cartridge would not be exploded.

lVhat I claim is Aburglar alarm comprising a base plate having a firing chamber mounted thereon, a lug projecting upwardly from one side of the baseplate, a cylindrical member mounted on the base plate and opposite the said lug and provided with a longitudinal passage therein, and a transverse passage underlying the said longitudinal passage, a sha ftmounted transversely of the base plate and having its opposite ends journaled respectively in the lug and the transverse passage in the cylindrical member, a hammer fixedly mounted-on the transverse shaft and provided with a firing pin, and an arm arranged at an angle to the firing pin, a trighaving a laterally extending arm adapted,

to engage over the arm on the trigger when the latter is in full cock position and to terminally extend beyond one of the longitudinal edges of the base plate, said trig ger having its opposite end bent into parallelism with the first mentioned end so as to engage under the firing pin when the ham mer is in half-cock position, a yoke mounted on the base plate, a spring mountedon the trigger and adapted to engage with the yoke to lock the hammer when the latter is in full cock position and a spring on the shaft forcing the hammer in the direction of the firing chamber when the spring on the trigger is released from the yoke on the base plate.

In testimonywhereof I aflix my signature in presence of two witnesses.

GORDON F. RENNET, LEO. RozBoRIL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner ofJPatents, Washington, D. '0.

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