アート
美容とウェルネス
工芸
文化と歴史
エンターテインメント
環境
食品と飲料
リバースエンジニアリング
科学
スポーツ
テクノロジー
ウェアラブル
The Spring Grapple: Tong-Shaped Spring, Talon Hooks and a Set Joint That Snaps Shut on Touch
Something lying out of reach, under water or down a hole, is hard to grip with a hook on a line.
Orra Warner and Charles S. Gaylord of Gaylord's Bridge, Connecticut, received US 7,709, dated 8 October 1850, for a "grapple" of "a metallic spring of more or less length and thickness, according to the size of the object to be seized, bent so as to resemble in its outlines a pair of sugar-tongs", each end carrying a hook "resembling in form an eagle's talon" on a pin. Forced open, the hooks meet in a set joint held by a set-screw; lowered on a line, wire or pole onto the object, the joint yields as soon as it touches, and the spring drives the hooks together. The grapple was meant for catching fish and animals "and other purposes".
This rung works out how the set joint's angle decides how easily it springs, then forges the spring and hooks and uses the grapple to recover dropped objects from water.
中級者
About 5 hours
手順
1
1
The set joint
The set joint
Jupyter ノートブックを読み込み中…
2
2
Tongs before it
Tongs before it
The embedded blueprint forges tongs closed by the hand. Warner and Gaylord's grapple is tongs closed by a spring, triggered by touch.
3
3
Read US 7,709
Read US 7,709
"When the points of the hooks are forced apart far enough to bring the three axes above described nearly in a right line the set-screw in the shoulder of one hook touches the shoulder of the other, thus making a set joint, and the instrument remains open or set ready for use."
"To use the above-described instrument it is, when fastened to a line, wire, or pole, opened and then lowered onto the object desired. As soon as the set joint touches the object the joint yields and the force of the spring brings the points of the hooks forcibly together. The set-screw causes the grapple to spring more or less easily, according as the joint is made more or less open thereby."
4
4
Make the grapple and recover objects
Make the grapple and recover objects
**Spring.** Heat and bend a 40 cm strip of spring steel into a sugar-tong shape, and forge each end into an ear with a slot cut open at its end.
**Hooks.** Forge two curved hooks from steel rod, shaped like talons, their inner ends flattened with a tenon on one and a mortise on the other so they pin together. Pin each hook in its ear, and pin the two inner ends to each other as the common axis.
**Set-screw.** Drill and tap one hook's shoulder for a small machine screw that touches the other's shoulder when the joint is nearly straight.
**Swivel.** Fit a swivel or a ring in the spring's bend for the line.
**Test.** Open and set the grapple, lower it on a cord into a bucket of water onto a sunken block of wood or a tin, and lift it out. Turn the set-screw and find the setting that springs reliably but does not go off when handled.
このステップの材料:
ばね鋼帯0.4 メートル
軟鋼丸棒0.3 メートル
小ねじ1 個
鋼製リベット3 個
木綿のひも3 メートル
堅木のブロック1 個
ブリキ缶1 個必要な工具:
プロパントーチ
金床
ハンマー
万力（ベンチバイス）
金切りのこ（ハクソー）
やすり（手やすり）
コードレスドリル
ドリルビットセット
ねじ切りタップダイスセット
バケツ
耐熱手袋
透明保護メガネ
リベット工具一式5
5
A grapple that will not set, goes off early or grips weakly
A grapple that will not set, goes off early or grips weakly
Spring grapple troubleshooting.
Flow
Loading...
6
6
History and honest limits
History and honest limits
**Orra Warner and Charles S. Gaylord** of Gaylord's Bridge, Litchfield County, Connecticut, received US 7,709, dated 8 October 1850. The hooks were fastened in the ears by pins c c; the shoulders e e carried the set-screw d; a swivel f in the spring's short bend took the line. They noted that spring hooks with a set joint were already used as a trap under Thomas A. Davies's patent of 1849, which needed a trigger, and claimed not the set joint but the arrangement of the tong-shaped springs, talons and set joint.
**Honest limits.** Forged spring strip and rod stand in for their made parts, and the grapple is used here only to recover objects. The notebook treats the joint as a simple toggle; its force and angles are examples. Your recovered objects are the result.
材料
7- 0.4 メートルプレースホルダー
- 0.3 メートルプレースホルダー
- 1 個プレースホルダー
- 3 個プレースホルダー
- 3 メートルプレースホルダー
- 1 個プレースホルダー
- 1 個プレースホルダー
関連ブループリント
これらのブループリントは知識を共有しています — 技術、材料、原理
CC0 パブリックドメイン
このブループリントはCC0で公開されています。許可を求めずに、自由にコピー、修正、配布、あらゆる目的で使用できます。
メイカーを応援するには、ブループリント経由で製品を購入してください。メイカーには メイカーコミッション がベンダーにより設定されています。または、このブループリントの新しいイテレーションを作成し、自分のブループリントにコネクションとして含めて収益を共有できます。