US3168730A - Door knob contained electric signal structure - Google Patents

Door knob contained electric signal structure Download PDF

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Publication number
US3168730A
US3168730A US282813A US28281363A US3168730A US 3168730 A US3168730 A US 3168730A US 282813 A US282813 A US 282813A US 28281363 A US28281363 A US 28281363A US 3168730 A US3168730 A US 3168730A
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United States
Prior art keywords
knob
shank
electric signal
signal structure
hollow
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Expired - Lifetime
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US282813A
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Fred A Baldinelli
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Individual
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
    • G10K1/063—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated the sounding member being a bell

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  • This invention relates to a signalling device such as a doorbell which is completely enclosed in the doorknobs of a door. It is an object of the invention to provide a compact, convenient and inexpensive signalling assembly which is entirely contained in the knobs of a door, a push button being provided in one of the knobs.
  • FIGURE 1 is a sectional view of a doorknob assembly containing an embodiment of the invention
  • FIGURE 2 is an end elevation of the assembly illustrated in FIGURE l; Y
  • FIGURE 3 is a sectional view on the line 3 3 of FIGURE 1;
  • FIGURE 4 is an elevational view of part of one of the knobs containing the batteries and bell.
  • the inside knob of a doorknob assembly may be made .in two parts 1 and 2, which may conveniently be screw threaded together so that access to the interior can readily be had.
  • the detachable part 1 of this doorknob is provided with a number of apertures 15 .which are covered by a screen 3 on the inside of the knob part 1.
  • Within the knob part 2 may be mounted small ilash batteries 4 and a vibrator audible sound producing means 5 which can be actuated by electric current.
  • the knob 1, 2 is mounted in the usual manner on the inner end of the shank 6 which extends through the door 7.
  • the outer knob 8 is mounted on the threaded outer end 9 of the shank.
  • the shank is hollow, having a bore 17 which extends from end to end thereof. Through this bore ex- Federated Feb.
  • a tended insulated wires 10 which are connected to the batteries 4 and vibrator audible sound producing means 5 in the knob 1, 2 and to a push button mounted in the knob 8.
  • An insulating member 12 is mounted in the knob S flush with the outer surface theerof.
  • a metal member 13 is attached to the inner end of this insulating member in position to be touched by a switch element 16 when pressed inward by push button 14 against the pressure of a spring 11 of non-metallic material.
  • the button 14 is pressed to close the circuit, the vibrator audible sound producing means 5 sounds through the screen 3 and apertures 15.
  • This signalling assembly can be quickly and easily applied to an existing door without requiring any house wiring.
  • the batteries are easily renewed when required.
  • a signalling assembly for a door comprising a shank which is hollow from end to end, an outer knob mounted on the outer end of said shank and an inner knob mounted on the inner end of said shank, said knobs being hollow, the inner knob having a removable part for access to the interior, batteries and a vibrator audible sound producing means mounted within the inner knob, a push button switch mounted in the outer knob, and wires operatively connecting said push button switch, batteries, and vibrator audible sound producing means, said wires extending through the hollow shank.

Description

Feb. 2, 1965 F. A. BALDINELLI 3,168,730
nooR RNoE CONTAINED ELECTRIC SIGNAL STRUCTURE Filed May 23, 1963 INVENTOR. Fred A. Buldinelli United States Patent O M ce 3,163,730 DUUR KNSE CNTAINEB EIECTRIC SIGNAL STRUCTURE Fred A. Baldinelh, 135 Atherton St., Milton, Mass., assigner of thirty-hva percent to Anthony Gaiinccn, Cambridge, Mass., and ten percent to Rocco Shelli, Woburn, Mass.
Fiied May 23, 1963, Ser. No. 282,313 2 Ciaims. (C1. 340-392) This invention relates to a signalling device such as a doorbell which is completely enclosed in the doorknobs of a door. It is an object of the invention to provide a compact, convenient and inexpensive signalling assembly which is entirely contained in the knobs of a door, a push button being provided in one of the knobs.
For a more complete understanding of the invention, reference may be had to the drawing, of which:
FIGURE 1 is a sectional view of a doorknob assembly containing an embodiment of the invention;
FIGURE 2 is an end elevation of the assembly illustrated in FIGURE l; Y
FIGURE 3 is a sectional view on the line 3 3 of FIGURE 1; and
FIGURE 4 is an elevational view of part of one of the knobs containing the batteries and bell.
The inside knob of a doorknob assembly may be made .in two parts 1 and 2, which may conveniently be screw threaded together so that access to the interior can readily be had. The detachable part 1 of this doorknob is provided with a number of apertures 15 .which are covered by a screen 3 on the inside of the knob part 1. Within the knob part 2 may be mounted small ilash batteries 4 and a vibrator audible sound producing means 5 which can be actuated by electric current. The knob 1, 2 is mounted in the usual manner on the inner end of the shank 6 which extends through the door 7. The outer knob 8 is mounted on the threaded outer end 9 of the shank. The shank is hollow, having a bore 17 which extends from end to end thereof. Through this bore ex- Federated Feb. 2, 1965 A tended insulated wires 10 which are connected to the batteries 4 and vibrator audible sound producing means 5 in the knob 1, 2 and to a push button mounted in the knob 8. An insulating member 12 is mounted in the knob S flush with the outer surface theerof. A metal member 13 is attached to the inner end of this insulating member in position to be touched by a switch element 16 when pressed inward by push button 14 against the pressure of a spring 11 of non-metallic material. When the button 14 is pressed to close the circuit, the vibrator audible sound producing means 5 sounds through the screen 3 and apertures 15.
This signalling assembly can be quickly and easily applied to an existing door without requiring any house wiring. The batteries are easily renewed when required.
I claim:
, 1. A signalling assembly for a door comprising a shank which is hollow from end to end, an outer knob mounted on the outer end of said shank and an inner knob mounted on the inner end of said shank, said knobs being hollow, the inner knob having a removable part for access to the interior, batteries and a vibrator audible sound producing means mounted within the inner knob, a push button switch mounted in the outer knob, and wires operatively connecting said push button switch, batteries, and vibrator audible sound producing means, said wires extending through the hollow shank.
2. A combination as described in claim l, the removable portion of the inner knob having a plurality of apen tures therethrough and a screen on the inner surface thereof covering said apertures.
References Cited in the tile of this patent UNITED STATES PATENTS 1,156,809 Pidgeon Oct. 12, 1915 2,301,720 Tyminski Nov. 10, 1952 2,829,257 Root Apr. l, 1958

Claims (1)

1. A SIGNALLING ASSEMBLY FOR A DOOR COMPRISING A SHANK WHICH IS HOLLOW FROM END TO END, AN OUTER KNOB MOUNTED ON THE OUTER END OF SAID SHANK AND AN INNER KNOB MOUNTED ON THE INNER END OF SAID SHANK, SAID KNOBS BEING HOLLOW, THE INNER KNOB HAVING A REMOVABLE PART FOR ACCESS TO THE INTERIOR, BATTERIES AND A VIBRATOR AUDIBLE SOUND PRODUCING MEANS MOUNTED WITHIN THE INNER KNOB, A PUSH BUTTON SWITCH MOUNTED IN THE OUTER KNOB, AND WIRES OPERATIVELY CONNECTING SAID PUSH BUTTON SWITCH, BATTERIES, AND VIBRATOR AUDIBLE SOUND PRODUCING MEANS, SAID WIRES EXTENDING THROUGH THE HOLLOW SHANK.
US282813A 1963-05-23 1963-05-23 Door knob contained electric signal structure Expired - Lifetime US3168730A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341842A (en) * 1964-08-28 1967-09-12 Angelus S A Acoustical signal generator
US4981314A (en) * 1989-02-06 1991-01-01 Carr Anthony L Door knob
US5311168A (en) * 1992-09-10 1994-05-10 Pease Industries, Inc. Lock set with self-contained door alarm and annunciator system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156809A (en) * 1915-03-17 1915-10-12 Thomas L Pidgeon Burglar-alarm bolt.
US2301720A (en) * 1941-12-18 1942-11-10 Stanley E Tyminski Combined doorknob alarm and push-button signal
US2829257A (en) * 1956-11-09 1958-04-01 Dietz Co R E Transistor oscillator circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156809A (en) * 1915-03-17 1915-10-12 Thomas L Pidgeon Burglar-alarm bolt.
US2301720A (en) * 1941-12-18 1942-11-10 Stanley E Tyminski Combined doorknob alarm and push-button signal
US2829257A (en) * 1956-11-09 1958-04-01 Dietz Co R E Transistor oscillator circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341842A (en) * 1964-08-28 1967-09-12 Angelus S A Acoustical signal generator
US4981314A (en) * 1989-02-06 1991-01-01 Carr Anthony L Door knob
US5311168A (en) * 1992-09-10 1994-05-10 Pease Industries, Inc. Lock set with self-contained door alarm and annunciator system

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