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Hand-Held Cup Anemometer with Folding Cups: Simerl, 1978

R. A. Simerl (US Patent 4,102,188) · Public domain (expired patent)

작성자

Penny

12. 10월 2026

Hand-Held Cup Anemometer with Folding Cups: Simerl, 1978

R. A. Simerl of Annapolis, Maryland, patented this hand-held wind meter in 1978, US 4,102,188. A cylindrical casing small enough to hold in the hand carries a spindle with three light plastic cups on radial arms. The wind spins the cups, and the spindle's rotation is read as wind speed on a calibrated gauge behind a window in the casing. Earlier cup anemometers had their arms fixed to the spindle; here each arm is hinged to a link in a sliding cap, so pushing the cap up folds all three cups upright and parallel to the spindle for storage.

중급

Workshop process

안내

Casing and spindle

Journal a metal spindle vertically in the casing (aluminium or plastic), projecting through a central opening in its top. Inside, conventional electronic apparatus monitors the spindle's rotation and turns a calibrated gauge behind an arcuate window. Cut two annular grooves near the spindle's upper end and thread its tip.

이 단계의 재료:

눈금 창이 있는 풍속계 손잡이 케이스1 개

홈이 있는 풍속계 축1 개

축 회전 측정기와 풍속 계기1 개

필요한 도구:

금속 선반

드라이버 세트

Spider cap

Make the cap in two plastic parts: a top with three vertical slots in its side wall and pins on its rim, and a bottom with a tubular hub split by four slots and ending in an inturned rib. Fix a spider plate on the spindle's reduced upper end inside the top, slide the hub over the spindle, mate the pins with recesses in the bottom's rim, and fit a lock nut on the threaded tip.

이 단계의 재료:

분할 허브가 있는 2분할 스파이더 캡1 개

스파이더 판1 개

고정 너트1 개

필요한 도구:

사출 성형기

펜치(콤비네이션 플라이어)

Cup arms

Make three plastic arms with a wind cup on each outer end. Pass their inner ends through the slots and pivot each to the lower end of a link, itself pivoted in its slot and running up at about 45° to a pivot on the spider plate.

이 단계의 재료:

피벗 링크가 있는 플라스틱 풍배 암3 개

필요한 도구:

사출 성형기

정밀 핀셋 세트

Fold and open

With the hub's rib in the lower groove, the arms stand horizontal and the cups turn in the wind. Push the cap top up: the flexing hub's rib cams out and snaps into the upper groove, and the links swing the arms up to stand parallel to the spindle. Press it down to open them again.