US1156497A - Burglar and fire alarm. - Google Patents

Description

M. J. RYAN.

BURGLAR AND FIRE ALARM.

APPLICATION man JULY 1. 1913.

1,156,497. Patented Oct. 12, 1915.

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BURGLAR AND FIRE ALARM.

APPLICATION FILED JULY 1.1913.

1 156 497, Patented ()0t.12,1915.

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MARK J. RYAN, or CINCINNATI, OHIO.

BURGLAR AND FIRE ALARM.

To all whom it may concern:

Be it known that 1, MARK J. RYAN, a citizen of the United States, residing at Gin cinnati, in the county of Hamilton and Stateof Ohio, have invented new and useful Improvements in Burglar and Fire Alarms, of which the following is a specifi cation.

- This invention is an improved burglar and fire alarm adapted, when used as a burglar alarm especially, to be attached to a door casing and set in operation when the door or a transom over the door isopened, even to a slight extent, andalso adapted to be used a the alarm at any desiredplace and arranged to beset in operation auto- Inatioa'lly whenever there is a decided rise in temperature, the invention consisting in the construction, combination and arrangement of devices hereinafter described and claimed. a

Oneobject ofthe invention isto provide in connection with the actuating element of an alarm apparatus, a trigger lever to hold the same and anovel, spring-pressed catch having a cam surface to normally holdthe trigger element in setposition and yetper- Hit the trigger lever to be released.

Another object is to provide an improved form'of trip arranged to be attached to the trigger" element and to be moved by' the opening ofa door or window, or the like; so as to release the trigger element" and set the alarm apparatus in operation, another object beinggto provide an improved attacher for connecting the trip to the trigger elementL a v Another object is to provide an actuating spring to release the lever and a wax holder to support a body of wax or otherreadily fusible material and normally press the same against the spring so as to restrain the latter from" operation excepting when the wax or other fusible body is melted or softened a dangerous" rise in temperatureas 1 1 -provided. A spring 18 is connected to the in theev'ent of a fire. p

In the accompanying drawingsFigure 1 is 4 a diagrairunatic elevation of a burglar and fire ararm apparatus constr cted. 111110 escapement of a spring gear.

sp' efi m t m- Patented eat. 12, 1915. Appncafidn fiieanu 1,1913. Seria1No.776, 869.

cordancewith my invention and arranged for use in connection 'with a door and a transom over the door. Fig. 2 is a vertical sectionalview of the alarm apparatus. Fig. 3 is a similar view on a plane at right angles to that of Fig. 2. Fig. 4 is a sectional View on the plane indicated by the line aa of Fig. 2. Fig.5 is an inverted plan of the alarm'apparatusp My improved alarm apparatus is here shown as having a casing 1 which isprovidedon one side with a suction or vacuum cup 2 to enable the casing to'be attached to the casing of a door, window or the" like without injuring the casing or marring the finish thereof or the varnish thereon.

The alarm apparatus 3 may be of any usual or suitable construction and includes a rock shaft 1 which is the actuatlng ele ment thereof and which is operated by the This rock shaft has an arm 5 and alsohas' a vibrator arm 6 which extends through and operates in a slot in the top of the casing and is provided with a head or hammer 7 for striking a bell 8.

In Fig. 1 of the drawing, I show the casing of the alarm apparatus secured to the casing Act a door 13 and between the top of the door and a transom C. I also provide a trigger lever 9 which is arranged in the casing 1, is pivotally mounted as at 10 and has an arm 11 which extends through and operates in a slot 12 in the bottom of'the casing and projects below the casing. This triggerlever has an arm 13 to bear on the arm :5 of the actuating shaft 4 and nor-- mally holds the latter in inoperative, set position.

To normally retain thetrigger lever in set position, and yet permit it to be turned to release; the actuating shaft, I provide a catch 14!: which is pivotally mounted as at 15" and has a cam surface 16 for engagement by I a detent 17 with which the trigger lever is catchfand exerts its tension thereon te 1101'- niallyihold the catch in the path of the trig i the trip and causes the latter through the sented to and engaged by the detent 17 When, however, the trigger lever is moved to release the actuating shaft the d'etent l7 slips on the cam surface 16, the catch per-- mitting movement of the trigger lever to release the actuating shaft but the friction created by the tension" of the spring 18 between the detent 17 and the cam surface 16 serves to prevent casual movement. of the trigger lever.

The trigger lever is also provided with an arm 19. In connection with thetrigger lever, Ifprovide a trip 20 which is provided at one "end with an inclined cam arm 21..

The trip is provided at a point intermediate its ends with apair of upwardly extending ears 22 whichare arranged onoppositesides of. an attacher 23 andare-connected thereto bya pivotpin 24-; The attacher is arranged on-one side of the lower portion 11 of the trigger lever, is adjustable thereon and has Ian adjusting slot 24t through which extends 1 a set screw 25 whichengages a threaded opening in said arm of the trigger lever and,

2 arm 26 with the lower side'of the 'attacher is normally held in horizontal position with its-cam arm 21 extendingtoward the door, but arranged slightly beyond the top or one edge of the door, The door is provided with a push rod 27 which is movable in openings in a pair of studs 28-29 which are adaptedto be screwed or otherwise attached to the door.

The push rod has a stop collar 30 thereon to engage the stud 29 and prevent the'push rod from dropping and the said stud is pros vided with a set screw 31 which,.when the pushrod is moved upwardly so as to project its upper or outer end beyond the top or,

edge of the door and intothe path of the trip may be employed to secure the push rod in set position. When the door is opened, even to-a slight extent, the push rod engages instrumentality of the attacher to move the trigger lever in the directionindicated by the arrow in Fig. 1 and thus release the arm 13 of the trigger lever from the arm 5 of the actuating shaft 4 and, hence, cause the alarm to operate. The door may be closed,

however, without afi'ecting the trigger lever as the push rod, by engaging under the cam surface 21 of the tripiwill raise the latter out of the way of the push rod. The. push rod, hence, may b'e'adjusted as requiredeitherwhen the door isopened or closed. A releasing. lever 32 is also provided Whlch by theengagement of its outer is arranged with its lower portion in the casing 1 and pivotally mounted at its lower end as at 33, the upper portion of the releasing lever extending through a slot in the top of the casing. Said releasing lever has an arm 34 projecting therefrom at right angles thereto for coaction with the arm 19 of the trigger lever to release the latter and at the upper end of the releasing lever is an adjustable trip arm 35 which is provided with a longitudinal slot 36 and is secured to the releasing lever by a set screw 37 which operates in said slot. The said trip arm may be arranged in the path of the transom C, so that when the latter is opened, even to a slight extent, the'triplever will. cause the releasing lever to be actuated and, hence, cause the alarm to be sounded.

. To adapt the alarm to be sounded in the event of a fire or a dangerous or abnormal increase in temperature in the room or place where the alarm is employed, I provide, on

the bottom of the casing an actuating spring 38, one end of which is arranged near the trigger lever arm 11 and extends across the slot 12. This actuating spring is here shown as secured atits opposite end as at 39. A holder 40 is also provided which is here shown as a bent arm attached as at. 41150 the securedend of the actuating spring. A

bodyt2, of wax or other easily fusible mate rial is placed in the holder, bears between j the latter and the actuating spring and normally holds the actuating spring at one end ofthe slot 12 and out of. engagement with the arm 11 of the trigger lever. In the event of afire or an abnormal rise in temperature the body 42 will fuse and release the spring 38 and thereupon the latter will strike the arm 11 of the trigger lever and move the latter to releasing position and set of? the alarm apparatus.

My improved burglar andfire alarm. is very compact, is easily portableand may be readily attachedto a door or window in any ordinary room and, hence, is adapted for use by guests in hotels and also in other places.

. While I have herein shown and described a preferred form of my invention, I would have it understood that, changes may be made in the form, proportion and construction of the several parts, without departing from the spirit of the invention and within the scope of the appended claims.

Iclaimz- I V 1. In combination with the actuating element of an alarm apparatus, a trigger lever to hold the same, a spring pressed catch having a cam surface to :hold thetrigger' lever in set position, and means, operated by a door, wlndow or the 'llke, to move the trigger leverto releasing. positlon.

2. In combination withthe actuating ele-'f ment of an alarm apparatus, atrigger lever 1,156,497 r r s,

to hold the same, an attacher adjnstahly seclosing of the door or Window Without outed to the trigger lever, and a trip carried affecting the trigger lever. 10

by the attaoher and adapted to be arranged In testimony whereof I afiix my signature in the path of a door, Window or the like in presence of two Witnesses. for operation thereby when the door or MARK J. RYAN.

window is open, the said trip being piv- Witnesses: otelly connected to the attaeher and being J OHN F. COOK, provided with a cam armto permit the JOSEPH F. ROSENBERGER.

Copies of this pa tent may be obtained for five cents each, by addressing the f Commissioner of Petents.

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