협업

예술

뷰티 및 웰니스

공예

문화 및 역사

엔터테인먼트

환경

음식 및 음료

역공학

과학

스포츠

기술

웨어러블

Jigsaw: Motor-Rocked C-Frame on a Leaf Spring (Heese, US 2,692,622, 1954)

George O. Heese · Public domain (US patent drawing)

작성자

Woody

3. 11월 2026

Jigsaw: Motor-Rocked C-Frame on a Leaf Spring (Heese, US 2,692,622, 1954)

A small electric jig saw for curved cuts. A long U-shaped frame holds a fine blade stretched between its two arms. The frame's back end hangs on an L-shaped leaf spring, and an eccentric on a motor shaft rocks its lower arm up and down, so the blade saws through a slot in the table while the spring flexes. A wing nut tensions the blade; sawdust falls into a box below. Result: a compact motor-driven jig (scroll) saw. Source: G. O. Heese, US 2,692,622 (1954). Unknown: materials, sizes, the motor and the stroke. Picture: the patent drawing.

중급

Unknown

안내

Build the base and table

Make a long flat base, wider at the front. Fasten a long upright support along it, its back end a separate upright strip. Across the wide front stand two walls with matching upright guide slots, carrying a level table that overhangs to the front with a slot for the blade. Under the overhang set a removable open box for sawdust. Not given: materials, sizes.

이 단계의 재료:

알 수 없는 재료1 base, support, walls, table, box

육각 볼트 모음1 fasteners

필요한 도구:

쇠톱(핵소)

손 드릴

알 수 없는 치수

Make the C-frame and spring hinge

Make a U-shaped blade frame: an upper arm, a lower arm, and a back piece made in one with the lower arm and bolted to the upper. Fix the upright part of an L-shaped leaf spring to the support's back strip; its flat part goes into a slot in the frame's back piece and is held by the same bolt. The frame can now swing up and down on the spring, its lower arm running in the walls' guide slots under the table.

이 단계의 재료:

알 수 없는 금속1 frame arms and back

판 스프링1 개

육각 볼트 모음1 개

육각 너트1 개

필요한 도구:

멍키스패너

Fit the motor and eccentric

Fix an electric motor on the wide front of the base with its shaft running across under the frame's lower arm. Put two bolts down through the lower arm, one each side of the shaft; on them hang a lower strip resting on nuts and an upper strip under the arm, with a coil spring on each bolt pushing the strips apart. Fix an eccentric on the motor shaft between the two strips: as it turns it rocks the frame. Not given: the motor, the throw.

이 단계의 재료:

전동기1 개

편심 부싱1 eccentric

알 수 없는 금속1 two strips

육각 볼트 모음1 two bolts

육각 너트2 개

압축 스프링 세트1 two coil springs

필요한 도구:

멍키스패너

Fit the blade clamps and use it

On the lower arm fix a strip with a forked end that hooks under the blade's lower pin. On the upper arm fit a bracket with a cross pin; an arm rocks on it, its forked front end over the blade's upper pin, its back end pulled down by a bolt with a wing nut. Add forked guide strips above and below the table. To fit a blade, loosen the wing nut, hook both pins and tighten the nut to stretch the blade straight. Switch on and feed the work across the table. Ours: a pinned coping-saw blade.

이 단계의 재료:

알 수 없는 금속1 clamp strips, bracket, arm, guides