US723908A - Door-bell. - Google Patents

Door-bell. Download PDF


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US723908A US11428302A US1902114283A US723908A US 723908 A US723908 A US 723908A US 11428302 A US11428302 A US 11428302A US 1902114283 A US1902114283 A US 1902114283A US 723908 A US723908 A US 723908A
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Clifford Bradley Pace
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Clifford Bradley Pace
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    • E05B45/00Alarm locks
    • E05B45/02Alarm locks with mechanically-operated bells


7 No. 723,908. PATENTED MAR. 31, 190s.- c. B. PAGE. A I
SPECIFICATION forming part of Letters Patent N 0. 723,908, dated March 31, 1903.
' Application filed July 3. 1902. Serial No. 114.233. mamas.)
To all whom-it may concern.-
Be it known that I. CLIFFORD BRADLEY PAGE, a citizen of the United States, residing at Weiner, in the county of Poinsett and State of Arkansas, have invented certain new and useful Improvements in Door-Bells; and I do declare the following to be a full, 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 figures of reference marked thereon, which form a part of this specification.
My invention relates to door-bells, but" defacing the same and which is designed tobe used in connection with' the ordinary knob and bolt.
With these objects in view my invention consists in the novel construction and arrangement of the connections and operating means of the bell.
My invention also consists in the particu lar combination of parts, which will be first fully described, and afterward specifically pointed out in the appended claims.
Referring to the accompanying drawings, Figure 1 is a plan view of my invention, showing the bell and door-knobremoved, but their position indicatedin dotted lines. Fig. 2 is a plan view of my invention in an-operative position. Fig. 3 is a perspective view of my bell-operating mechanism.
Like numerals of reference indicate the same parts throughout the several figures, in which-- 1 is a part of the door-,and2 is the door-knob.
3 is the door-knob bolt.
4: is the bell-plate, which is secured to the door by the screws 5.
6 indicates the bell, which is carried on the post 7.
8 is the clapper, which is pivoted on the plate 4 and which is provided with lug 9.
10 indicates a spring which bears against the arm 11 of the clapper 8.
12 indicates a toothed segment which is se- 5 5 cured to the arm 13 or formed integrally therewith and which is pivoted on the post 7. Pivoted on the arm 13 is a connectinglink 14, provided with a notch 15, which enters said link at right angles thereto near the lower end thereof and which then extends longitudinally a short distance. I
16 is a keeper pivoted to the connectinglink,.having a portion of its lower end cut away, as shown in Figs. 1 and 8.
17 is a crank which is provided with a square opening 18, through which the doorknob bolt passes, and which is provided at its outer ends with a pin 19, which enters the notch 15 in the connecting-link and which is passed into the longitudinal portion thereof,
. after which the keeper 16 is swung into position, as shown in Fig. 1.
In operation the knob is turned either way, which raises or lowers the connecting-link, causing the toothed segment to revolve,wh'ereby the teeth thereof alternately push the lug on the clapper-arm and the spring pushes the lug between the teeth, thus rapidly vibrating the clapper and causing. the same to strike the bell in a manner similar to an electric gong.
.at once apparent, and I have provided for' dis- The simplicity of this arrangement is engaging the bell-connecting means when it isdesired'not to have the bell ring when the knob ,is turned. To accomplish this, the keeper is swung'up in position shown in Fig. 3 and the pin on the crank is disengaged from the connecting-link either manually or by.
simply turning the knob to the right, which will carry the pin out of the notch.
Having thus described my invention, I do not'wish to be understood as limiting myself to the exactconstruction as herein set forth, but consider myself entitled. to all such "changes and modifications that fall within the limit and scope of my invention as defined by the following claims. t
, What I claim as new, and desire to secure by Letters Patent of the United States, is
1. In a door-bell, the combination with the door-knob bolt of a bell-crank carried thereon, a toothed segment, an arm secured thereto, a connecting-link between said crank and notch therein, a keeper pivoted to said link and adapted to hold said link in engagement with said crank; the whole arranged where by the crank Will disconnect itself from the link when the keeper is raised by turning the door-knob.
In testimony whereof I affix my signature :0
in presence of two Witnesses.
\Vitnesses: I
V. 0. HEAD, J. D. YATES.
US11428302A 1902-07-03 1902-07-03 Door-bell. Expired - Lifetime US723908A (en)

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