US1006608A - Combined fire and burglar alarm. - Google Patents

Description

J. M. WALKER.

V COMBINED FIRE AND BURGLAR ALARM.

APPLIOATION FILED 001.22, 1910.

1,006,608. Patented 001211911.

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m an 1% COLUIAUIA PLANPGRAPH C0,,WASNINGTON D C JAMES M. WALKER, 0F QUILL LAKE, SASKATCHEWAN, CANADA.

COMBINED FIRE AND BURGLAB ALARM.

Specification of Letters Patent.

Patented Oct. 24, 1911.

Application filed October 22, 1910. Serial No. 588,522.

To all whom it may concern:

Be it known that I, JAMES M. WALKER, a citizen of the Dominion of Canada, residing at Quill Lake, in the Province of Saskatche-.

- above described character which isvery reliable in its operation and which upon the occurrence of a fire or an attempt to force an entrance into the apartment, will automatically operate a telephone and give the necessary alarm at the fire department or police headquarters.

With the above and other objects in view, the invention consists of the novel features of construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a view showing the interior of an apartment, illustrating the manner in which my improved alarm system is installed; Fig. 2 is a section taken on the line 22 of Fig. 1, showing the connection of the operating cord to the sashes of a window; and Fig. 3 is a section taken on the line 33 of Fig. 1 illustrating the manner in which the device is operated by the opening of a door.

Referring more particularly to the drawing 5 designates a bar or arm pivotally mounted at one end as shown at 6. This arm is normally held in a substantially vertical position by means of a contractile spring 7 one end of which is secured to the arm and the other end to the wall of the apartment or other stationary object. This arm is positioned in convenient relation with respect to a telephone box 8 which has a magneto therein, the magneto shaft extending through the box and having a crank 9 formed on one end. This crank is adapted to be disposed beneath the free end of the arm or bar 5 to maintain the coiled spring 10 which rotates the magneto shaft under tension.

To the free end of the arm or bar 5 one end of an operating cord 11 is secured, said cord passing around pulleys 12 arranged upon the walls of the apartment. This operating cord may be arranged in any desired manner and placed in position where a fire would be most likely to originate. In order to utilize the device as a burglar alarm as well as a fire alarm the cord is extended above the window of the apartment and is drawn downwardly as shown at 12 to provide a loop portion. A resilient U-shaped strip of metal 13 has its ends disposed in staples 14: secured to the upper rail of the lower sash and the lower rail of the upper sash when the sashes are closed. Staples 1 1 are also secured to the sash frame to receive the ends of the spring plate when it is desired to adjust the sashes. A pulley 15 is arranged upon this spring strip around which the looped portion 12 of the operating cord passes. After passing over supporting pulleys arranged upon the wall, the operating cord is again drawn downwardly to provide a second 100p 12 adjacent to the door D of the apartment. This door carries a key actuated bolt of any ordinary form whereby the same may be securely locked, said bolt being movable into a casing C arranged on the door ja-Inb. A plate 16 is movable through the top of the casing and has a hook 16 therein to receive the locking dog B when the door is locked. A stud 17 is transversely disposed within the casing beneath the locking bolt. This stud is adapted to be engaged by the hook 16 of the trip plate when the door is being constantly opened and closed by persons occupying the apartment thereby maintaining the operating cord taut without releasing the slack therein which would cause the operation of the alarm. The end of the operating cord after the same has been extended around the walls of the apartment is fixed to a drum 18 upon which it is adapted to be wound to take up the slack therein after the spring plate has ,eral functions will be apparent.

the tension of the regulated to retract said arm upon the release of either "of the trip elements or the burning of the cord.

From the above the operation of my improved system will be obvious. Should afire originate in the apartment around the walls of which the operating cord extends, the cord will be burned through which will permit the spring 7 to retract, thereby drawing the cord around the pulleys arranged upon the Walls and carried by the trip element connected to the -window sashes and engaging the door bolt. This retraction-of the spring and releasing the operatingcord thus 7 to retract.

1s operated to unlock moved out of the-notch l6 drawn through the various arm 5 elevatedtocause the telephone andnotify the police department with which the telephone is connected.

pulleys and the the manner in which the arranged for the performance of their sev is very reliableand operation and by its use attempted burglary 1s frustrated and the destruction of the;

spring may be suitably movement of said sashes disengaging the 'end' of the springtrip plate lowered portion of "the permitting the spring If forcible entry is attempted by means of the door, when "t-he'locking bolt I the door it will be? in the trip plate thus permitting the operating cord to be operation ofthe The device eflicient in practical building'by'fire is prevented. *It will of course be obvious that the operating cord maybe extended exteriorly of the apartment and to the other parts of the building, or each of the rooms or apartments may be provided with a separate cord, and the telephones connected in circuit with a main telephone which is operated from any one of the apartments giving the alarm.

While I have shown and described the preferred construction and arrangement of the various parts,'it will be understood that the device is susceptible of considerable modification without departing from the essential feature or sacrificing any of the advantages of the invention.

Having thus described the mvention what 1s claimed is The combination with a telephone having a spring actuated crank to operate the telephone call bell, of a pivotally mounted arm normally engaged with said crank 'to prevent operation of the call bell, an operating cord connected to said arm and extended over the walls of an apartment, a resilient hook connected to said cord and to the sashes "of a window, a hook connected to the operatmgcord and engaged with the'bolt of a door, a drum on which said operating cord is adapted to be wound to hold the same taut, a pin to be engaged by the hook and hold the same out the door bolt without retheburning of-the cord or of contact with lea sing *the' cord,

the disengagement of said hooks from the window sashes or the door bolt slackening the operatmgcord, and means 'for elevating i thejpivoted arm out of contact with said From the foregoing it is. believed that various parts are crank whereby the telephone call *bell is operated.

In testimony whereof I hereunto affix'my signature in the presence of'two witnesses.

JAMES M. "WALKER. Witnesses C. F REDERICK'SON,

G120. H. YULE.

Copies of'thi's patent may be obtainedfor five cents each, by'addressingthe Commissioner of Patents,

Washington, D. G.

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