예술
뷰티 및 웰니스
공예
문화 및 역사
엔터테인먼트
환경
음식 및 음료
역공학
과학
스포츠
기술
웨어러블

The Ice Tongs: Links That Close the Grip as You Lift
A block of ice is heavy, wet and slippery. Tongs that must be squeezed by hand tire the carrier and drop the block; tongs that grip harder as they lift do the work themselves.
Newton K. Wright of Pewamo, Michigan, received US 361,108, dated 12 April 1887 (filed 17 February 1887), for ice-tongs whose legs are joined to the handle by links: "By the pressing down upon the handle the points are forced apart until they embrace the ice, when, by pulling up on the handle, the points are embedded in the ice, and the latter is then easily carried." Flanged heads stop the tongs closing too far, so "the liability of pinching the hand is avoided."
This rung works out why the grip grows with the load, then lifts blocks of different weights.
초급
About 1 hour
안내
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Grip that grows with load
Grip that grows with load
Jupyter 노트북 불러오는 중…
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2
Tongs at the forge
Tongs at the forge
A smith's tongs are the oldest pivoted grippers. The embedded blueprint forges a pair.
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Read US 361,108
Read US 361,108
"The invention consists in the peculiar construction, arrangement, and combination of parts, whereby the legs of the tongs can readily be spread apart to grasp the ice". The two legs are "pivotally secured together, as in the usual manner." Their upper ends "are provided with flanged heads B, and in the rear of these heads the lower ends of the links C are pivotally secured to the legs A, the upper ends of such links being likewise pivotally secured to the ears a of a handle, D."
"If it is desired to lift a piece of ice, the operator grasps the handle and rests the points of the legs upon the ice. By the pressing down upon the handle the points are forced apart until they embrace the ice, when, by pulling up on the handle, the points are embedded in the ice, and the latter is then easily carried. By again pushing down upon the handle the points are released."
"The flanged heads coming in contact with the lower edges of the links C prevent the tongs from closing past a certain point, and the liability of pinching the hand is avoided."
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Lift light and heavy blocks
Lift light and heavy blocks
Freeze blocks of different sizes in loaf pans and a storage box. Weigh each on a scale.
Lift each with the tongs and a spring scale hooked through the handle, raising slowly. Watch how deep the points sink as the load rises. Measure the angle of the links with a protractor while lifting. Lift only a few centimetres over a towel, and wear gloves: a dropped block breaks toes.
이 단계의 재료:
물5 리터필요한 도구:
얼음 집게
식빵 틀
보관 상자
디지털 저울
스프링 저울
각도기
가죽 작업 장갑5
5
Tongs that slip or will not open
Tongs that slip or will not open
Ice tongs troubleshooting.
Flow
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History and honest limits
History and honest limits
**Newton K. Wright** of Pewamo, Michigan, filed US 361,108 on 17 February 1887; it is dated 12 April 1887. He notes one link at each end of the handle would also serve.
**Honest limits.** The patent gives no sizes. The link angles and leg lengths in the notebook are examples, and the model ignores the points' friction and penetration.
관련 블루프린트
이 블루프린트들은 지식을 공유합니다 — 기술, 재료 또는 원리

Forging a Pair of Iron Tongs — The Blacksmith's Essential Gripping Tool
Forge 작성
금속 가공
26
0
0
0
1
0

Making Wooden Fire Tongs — Split-Stick Spring Tongs for Handling Hot Stones and Coals
Woody 작성
목공
45
0
0
0
0
0

Ice Harvesting
Martin 작성
역학
33
0
0
0
0
0

The Law of the Lever — Archimedes' Balance of Weight and Distance
Martin 작성
물리학
54
0
0
0
1
0
CC0 퍼블릭 도메인
이 블루프린트는 CC0로 공개되었습니다. 어떤 목적으로든 자유롭게 복사, 수정, 배포 및 사용할 수 있습니다.
제품 구매를 통해 메이커를 지원하세요. 판매자가 설정한 메이커 커미션 을 받거나, 이 블루프린트의 새로운 반복을 만들어 연결로 포함시킬 수 있습니다.