US1057766A - Combined door-bell and burglar-alarm. - Google Patents

Description

C. B. PAGE.

COMBINED DOOR BELL AND BURGLAR ALARM.

APPLICATION FILED APR. 20, 1912.

1,057,766. Patented Apr. 1, 1913.

anvemtoz UNITED STATES PATENT OFFICE.

CLIFFORD 13. PAGE, OF JACKSON, TENNESSEE.

COMBINED DOOR-BELL AND BURGLAR-ALARM.

To all whom-it may concern:

Be it known that I, CLIFFORD B. PACE, a citizen of the United States, residing at Jackson, in the county of Madison and State of Tennessee, have invented certain new and useful Improvements in Combined Door- Bells and Burglar-Alarms; and I do declare the following to be afull, 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 the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to a combined bell and burglar alarm and has for its object to provide a device operated electrically whereby the movement of a door knob in either direction will close an electrical circuit to sound the bell.

Vith this object in View the invention consists in the novel construction of the parts andparticularly in the novel construction and arrangement of the circuit maker arranged in such manner that the same can be quickly and easily thrown into position in such manner that movement of the door knob in either direction will not close the electrical circuit to sound the bell.

The invention also consists in the construction which provides for utilizing the hinges of the door as a part of the electrical circuit in such manner that frequent opening and closing of the door will have no effect upon the conductors over which the electrical current flows.

The invention further consists in certain other novel details of construction and in combinations of, parts, all of which will be first fully described and afterward specifically pointed out in the appended claims.

Referring to the accompanying drawing: Figure 1 is a fragmentary view illustrating portions of a door and a portion of the jamb or casing therefor. Fig. 2 is a vertical sectional view through the plates and illustrating the arrangement of the parts, and Fig. 3 is a fragmentary View illustrating the circuit maker thrown out of operative position.

Like numerals of reference indicate the same parts throughout the several figures in which:

The position of the door knob is illustrated in dotted lines in Fig. 1, which door knob is as usually mounted on a rectangular staff Specification of Letters Patent.

Application filed April 20, 1912.

Patented Apr. 1, 1913.

Serial No. 692,202.

1 upon which staff is arranged a crank 2, said crank 2 having a preferable flexible vertical metallic extension 3 secured thereto in the manner as shown in Fig. 1.

4 indicates the bell, 5 is the battery, and 6 indicates the electrical circuit which, as will appear from Fig. 1, leads to both of the door hinges 7 to which hinges the wires of the circuit are electrically connected. The door knob plate 8 is also electrically connected to the lower hinge 7 while the plate 9 upon which the circuit maker is mounted is electrically connected to the upper hinge 7 the said plates 8 and 9 being normally out of electrical contact as shown in Figs. 1 and 2.

On the vertical sides of the plate 9 are disposed two upwardly turned lugs 10 within which the cross bar 11 is pivoted at 12 in the manner as shown in Fig. 1, and upon said cross bar 11 are arranged two horizontal extending metallic posts 13.

Arranged on the plate 9 and disposed directly under the transverse bar 11 is a leaf spring let having one end 15 secured to the plate 9, the end 16 being a free end in such manner that said spring is capable of depression in the manner as shown in Fig. 3. The said leaf spring 14 is normally in engagement with the bottom surface of the transverse bar 11 and as the said spring is provided about centrally with a depression 17 the tension of the spring 14 normally holds the plate in position shown in Fig. 2 and the pins 13 in position in Fig. 2 which are in the path of movement of the flexible metallic extensions 3, the said two pins straddling the said extensions 3 in the manner as shown in Fig. 1.

Having thus described the several parts of this invention its operation is as follows: The elements being assembled in the manner as shown in the drawing and the transverse bar 11 and extending pins 13 being in normal position as shown in Figs. 1 and 2 rotation of the door knob in either direction will carry the flexible extension 3 into either one of the positions shown in dotted lines in Fig. 1 thus closing the electrical circuit and causing the bell 4: to be sounded, the bell continuing to sound as long as the circuit is closed in the manner described, but ceasing as soon as the flexible connection 3 leaves its contacting post 13 to assume its normal position shown in full lines in Fig. 1; thus the bell is not sounded upon the return movement of the door knob to its normal position as will be clearly apparent from an inspection of the accompanying drawing. As it is necessary to provide a cutout so that at times the door can be opened without sounding the bell I have provided a very simple and novel construction above described and in order to effect an absolute cutout of the bell either one of the posts 18 can be manipulated in such manner as to rotate the transverse bar 11 in such manner that the said bar 11 and extending posts 13 are thrown down mto position shown in Fig. 8 in which position the posts 13 are out of the path of the movement of said flexible connection 3 in such manner that the door knob is free to be rotated in either direction without closing the circuit. As the leaf spring 14 is provided with a central depression 17 as heretofore described the edge of the transverse bar 11 is forced into said depression 17 and is held therein in the manner as shown in Fig. 3 until it is desired to again bring the posts into the path of movement of the flexible connection 3.

Having thus fully described the invention what I claim as new and desire to secure by Letters Patent is 1. A combined door bell and burglar alarm comprising an electric circuit, a flexible member connected to the door knob staff of a door, said door knob stafl and flexible member being arranged in said electric circuit, a metal plate associated with the said flexible member and normally electrically disconnected therefrom, said plate being arranged in the said electric circuit, a source of current, a bell arranged in said circuitand adapted to be sounded upon the closing thereof, a horizontal bar rotatably mounted on said plate, a pair of posts normally ex tending in a horizontal direction from said plate, said posts straddling the said flexible member and arranged in the path of movement thereof, a leaf spring arranged on said plate and in engagement with the lower surface of said bar to maintain the same and said posts in their proper extended position so as to be engaged by the said flexible element upon movement thereof in either direction, the said leaf spring being provided with a depression therein in such manner as to engage the side edge of said horizontal bar to hold the same and the said posts thereon in a lowered position when the said member and said posts are rotated in such manner as to carry the said posts out of the path of-movement of the said flexible element.

2. A combined door bell and burglar alarm comprising an electric circuit, a source of current and an audible sounding device arranged in said circuit and adapted to be sounded upon the closing of said circuit, a flexible element adapted to be carried on the door knob staff of a door, said door knob staff and flexible element being arranged in the said circuit, a plate arranged in said circuit and associated with said flexible element and normally electrically disconnected therefrom, a horizontal rotatable bar mounted on said plate, a pair of posts extending from said bar straddling said flexible element and arranged in the path of movement thereof so as to be engaged by said flexible element in either direction, and means for maintaining the bar in position to hold said posts in proper relative operative position and in the path of movement of the said flexible element and means for maintaining the bar in position to hold said posts in a lowered position out of the path of movement of the said flexible element in such manner as to permit a free movement of the said flexible element in either direction without engagement with the said posts.

3. A combined door bell and burglar alarm comprising an electric circuit, a source of current, an audible signaling device arranged in said circuit and adapted to be sounded upon the closing thereof, a flexible element carried on the door knob staff of a door, said door knob staff and door being arranged in the said circuit, a pair of elements arranged in the said circuit and straddling the said flexible element and in the path of movement thereof in such man ner that one of the said elements will be engaged by the said flexible element upon movement thereof in either direction to close the circuit, said two elements being capable of removal out of the path of movement of the said flexible element, substantially as described.

In testimony whereof, I aflix my signature, in presence of two witnesses.

CLIFFORD B. PAGE.

lVitnesses:

C. M. Fonnnsr, C. HUGH DUFFY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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