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Publication numberUS1118283 A
Publication typeGrant
Publication dateNov 24, 1914
Filing dateMay 25, 1914
Priority dateMay 25, 1914
Publication numberUS 1118283 A, US 1118283A, US-A-1118283, US1118283 A, US1118283A
InventorsRobert Henry Holdefer
Original AssigneeRobert Henry Holdefer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Carrier-pigeon signal.
US 1118283 A
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Description  (OCR text may contain errors)




1 1 1 8,283. Patented Nov. 24, 1914.

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S eeification of Letters Patent.

Patented Nov. 24, 1914.

Application filed May 25, 1814. Serial No. 845,919.

To all wizomit may concern Be it known that I, ROBERT H. HoLDErER, a citizen ofthe United States, residing at Baltimore, in the county of Baltimore, State of Maryland, have invented certain new and useful Improvements in Carrier-Pigeon Signals; and I do hereby 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.

This invention relates to improvements in signaling devices, and particularly to devices for signaling the arrival of a carrier pigeon at one end of its flight.

The principal object of the invention is to provide a device which includes a signal the sounding of which is controlled by the entrance of a pigeon into the cote, the signal automatically continuing its sounding until the circuit is broken by the attendant.

Other objects and advantages will be apparent from the following description, when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is a diagrammatic view of the signaling system. Fig. 2 is a slightly enlarged front elevation of the entrance to the cote. Fig. 3 is a vertical sectional View on the line 33 of Fig. 2. Fig. 4 is a vertical sectional view through a portion of the relay and releasing means therefor.

Referring particularly to the accompanying drawing, 10 represents a portion of a pigeon cote which has the entrance opening 11, and the usual ledge or shelf 12 disposed outwardly of the cote and below the open- 111".

Mounted above the opening are the insulated brackets 13 in which is supported a shaft 14. On this shaft are mounted a plurality of metallic collars 15 provided with the depending metallic bars 16 disposed behind the opening 11 and in position to be pushed in by the entering pigeon. Above the brackets is a metal bar 17 carrying a number of curved spring metal fingers 18 equal to the number of depending bars 16, the lower free end of each of the fingers being disposed close to one of the depending bars but out of contact therewith. On one end of the shaft 14 is mounted a metal collar 19 carrying a binding screw 20 to which is connected an electric conductor 21. To a binding screw carried connected another electric conductor 23.

The above mechanism is located in the cote while the mechanism now to be de scribed is located in the house.

Mounted at a suitable point in the house is an electric bell 24 which is provided with the binding terminals 25 and 26. At a-suit able point adjacent the bell is a relay 27' provided with the three binding posts 28, 29 and 30 respectively, these binding posts being wired up to the coils 31 and vibrator 32 in the usual manner. The armature 33 has a pointed and hooked end 34 which is adapted to pass through an opening in the vibrator 32. Covering the coils and vibrator is a removable housing 35 through one end of which is slidably disposed a plunger 36, the inner end of which is disposed adjacent the vibrator 32 and the outer end provided with a button 37. Between the button and the end wall of the housing is a coil spring 38 which normally draws the plunger out of engagement with the vibrator, a stop lug 39 carried by the plunger engaging the housing and limiting the outward movement of the plunger. A suitable source of electric current such as the battery 40 is provided.

The bell and relay are mounted on a suitable base (not shown). Extending from one side of the battery is a conductor 44 which connects with a conductor 45 leading to the terminal 26 of the bell. A conductor 46 connects the terminal 25 with the terminal 28. Connecting the other side of the battery with the terminal 29 is a conductor 47. Connecting the collar or ring 19 with the terminal 30 is the conductor 31 while the conductor 23 is connected to the conductor 44 above described. It will of course be understood that the conductors 21 and 23 extend from the cote to the house.

Vhen a pigeon enters the cote, it pushes the depending bars 16 forwardly causing them to engage with the spring fingers 18 thus closing the circuit through the bars and fingers. Normally the hooked end of the armature is engaged in the opening of the vibrator and holds the same in vertical position, but when the circuit is closed by the contacting of the bars 15 with the fingers 18 the coil will be energized and draw the armature down thus releasing the vibrator and permitting the same to close the circuit through the bell in the usual manner and by the bar 1'? is cause the ringing thereof. The bell will continue to ring until the plunger 36 is pushed in against the vibrator and forces the vibrator into position to be engaged and held by the hooked end of the armature.

From the foregoing it will be seen that-I have provided a simple and efficient device whereby the arrival of a carrier or homing pigeon will be immediately signaled to the house, so that the time of arrival can be obtained Without leaving the house.

What is claimed is:

1. A device for signaling the arrival of carrier pigeons comprising a source of electrical energy, an audible signal, a relay for holding the circuit When closed, and a circuit closer mounted in a dove cote for actuation by the entering carrier.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 2. A device for signaling the arrival of carrier pigeons comprising a source of elec trical energy, an audible signal, and a relay connected to the source of energy, a plurality of depending metallic bars disposed in the entranee opening of a clove cote, and a plurality of curved resilient metal fingers disposed adjacent the bars and in position to be engaged thereby when the bars are moved by an entering pigeon, said bars and fingers being connected in the electrical circuit.

In testimony whereof, l affix my signature, in the presence of two witnesses.-



5110. E. PoPP, Gino. P. BEnTsnL.

of Patents,

Washington, D. C.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3023283 *Nov 20, 1959Feb 27, 1962George WintrissSwitch apparatus for detecting delivery of parts
US4400696 *Apr 29, 1981Aug 23, 1983Klingensmith Robert RAnimal actuated attention attracting apparatus
US7057515May 12, 2004Jun 6, 2006Pende, Inc.Pet-activated signaling assembly
U.S. Classification340/573.3, 119/422, 200/61.41
Cooperative ClassificationA01K15/023, G07C1/26
European ClassificationG07C1/26