US 2350187 A
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y 1944- J. c. PFEIFFER' 2,350,137
STARLING SCARING DEVICE Filed Apr i1 12, 1940 J05EPH (I, pff/FFEQ,
yauiwam Patented May 30, 1944 UNITED STATES PATENT OFFICE 2,350,187 STARLING SCARING DEVICE Joseph C. Pfeifler, Louisville, Ky. Application April 12, 1940, Serial No. 329,311
. ing drawing wherein an embodiment of the invention is shown as applied to the facade of a building.
A building facade I, as illustrated in the drawing, has one or more windows 2 and ledges 3. Ordinarily, the starlings will roost upon the sills of the window 2, the ledges 3 and other protuberances on the front of the building. I have dis-- covered that the starlings may be eflectively frightened away from a substantial section of the facade siinply by securing one end of a flexible hose 4 at the facade and passing air through the hose under suiilcient pressure to thrash the hose and, at the same time, emit a staccato noise. A series of such hoses, say 6 to 10 inches long. spaced from 10 to 15 feet apart over the upper portion of the facade will ordinarily be suflicient to keep theentire facade clear of starlings.
In carrying out the invention, a desired number of hoses I should be distributed over the facade of the buildingand connected through air-supply pipes to a blower, compressor or other air-supply means 6. AIOperation of the device should be instituted around sundown and continued until the starlings have roosted for the night. Ordinarily, this will require the device to be operated from two to five hours. I have found, however, that after the device has been so operated for a month, more or less, the starlings will avoid the building entirely and make no attempt to roost upon it. Nevertheless, I prefer to continue the operation of the device more or less indefinitely although the daily operating time may be reduced to a In operating the device, it is not necessary to thrash the hose violently or otherwise so operate it as to produce a loud staccato noise. It is effective when the air flow through the hose is suflicient only to produce a soft or dull succession of reports. It will be appreciated that the invention as illustrated essentially involves the use 1 of a movable arm, coupled with means for swinging it and means for making an accompanying noise. Consequently, it may readily be embodied as for example in the form of an arm which is actuated electrically by any of a variety of wellknown electrical mechanisms which are capable of making an accompanying noise.
Having described my invention, I claim:
1'. A mechanism for scaring starlings and the like from the facade surfaces of building structures and the like comprising: a flexible hose hav- I ing an air inlet adjacent one end and an air outlet adjacent its opposite end and providing an air passage therebetween; means securing the air inlet end portion of the hose to hold it at a point adjacent the surface to be protected, the air outlet end portion being free to; thrash over the surface to be protected; and means for creating a flow of air through the hose with suflicient force to cause the hose to thrash about and emit a staccato noise.
2. A mechanism for scaring starlings and the like from the facade surfaces of building structures and the like comprising: an air supply pipe fixedly mounted on the structure and having an air outlet opening adjacent the surface to be protected; a flexible hose' having an air inlet-adjacent oneend and an air outlet adjacent its opposite end and providing an air passage therebetween; means anchoring the air inlet end of the hose to the pipe and connecting the hose air inlet to the pipe air outlet, the air outlet end portion of the hose being free so that the hose may thrash over the surface to be protected and about its anchorage; and means for creating a flow of air'through the hose with sufficient force to cause the hose to thrash about and emit a staccato noise.
JOSEPH C. PFEIFFER.