CH136845A - Wrench. - Google Patents
Wrench.Info
- Publication number
- CH136845A CH136845A CH136845DA CH136845A CH 136845 A CH136845 A CH 136845A CH 136845D A CH136845D A CH 136845DA CH 136845 A CH136845 A CH 136845A
- Authority
- CH
- Switzerland
- Prior art keywords
- lever arm
- key handle
- wrench
- tooth
- shorter
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/10—Spanners; Wrenches with adjustable jaws
- B25B13/28—Spanners; Wrenches with adjustable jaws the jaws being pivotally movable
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
Schraubenschlüssel. Gegenstand vorliegender Erfindung ist ein Schraubenschlüssel mit offenem Maul für Schrauben mit sechs- oder vierkantigen Mut tern oder Köpfen. Die beiliegende Zeichnung veranschaulicht ein Ausführungsbeispiel des Erfindungsgegens-tandes.
A ist ein Greifbacken, der durch den Bolzen L mit dem Schlüsselgriffteil C dreh bar verbunden ist. Am Greifbacken 9. ist der Greifbacken<I>B</I> mittelst eines Bolzens<I>D</I> drehbar gelagert. Der Greifbacken B ist mit einem Hebelarm H versehen, der an seinem freien Ende zahnförmig ausgebildet ist. Der Schlüsselgriffteil C bildet einen Hebel mit einem längeren und einem kürzeren Hebelarm. Der längere Hebelarm wird durch den Griff des Griffteils und der kürzere Hebelarm durch eine starre Verlängerung G des Griffes gebildet.
Die Verlängerung G ist mit einer zabnlückenförmigen Ausnehmung versehen, durch deren Flanken das zahnförmige Ende des Hebelarmes H gefasst wird. Die Druck feder F wirkt in entgegengesetzten Richtun gen einerseits auf den Greifbacken A und anderseits auf den Hebelarm H des Greif backens B.
Wenn beim Anziehen einer Schraube der _ Schlüsselgriff im Sinne des Anziehens bewegt wird, so suchen sich die Greifbacken scherenartig zu schliessen und halten die Mutter oder den Schraubenkopf durch Klemmwirkung fest, während bei der entgegengesetzten Bewegung des Schlüssel griffes sich die Greifbacken so weit öffnen, dass sie die Kanten der Mutter oder des Schraubenkopfes in einer Rätschbewegung überfahren und sich nachher unter der Wir kung der Feder auf die beiden Greifbacken wieder selbst schliessen.
Wrench. The present invention is a wrench with an open mouth for screws with hexagonal or square Mut tern or heads. The accompanying drawing illustrates an embodiment of the subject matter of the invention.
A is a gripping jaw which is rotatably connected by the bolt L to the key handle part C. The gripper jaw <I> B </I> is rotatably mounted on the gripper jaw 9 by means of a bolt <I> D </I>. The gripping jaw B is provided with a lever arm H which is tooth-shaped at its free end. The key handle part C forms a lever with a longer and a shorter lever arm. The longer lever arm is formed by the handle of the handle part and the shorter lever arm by a rigid extension G of the handle.
The extension G is provided with a gap-shaped recess, through whose flanks the tooth-shaped end of the lever arm H is gripped. The compression spring F acts in opposite directions on the one hand on the gripping jaw A and on the other hand on the lever arm H of the gripping jaw B.
If, when tightening a screw, the wrench handle is moved in the sense of tightening, the gripping jaws try to close like scissors and hold the nut or screw head tight by clamping action, while the opposite movement of the wrench grip opens the gripping jaws so wide that they run over the edges of the nut or the screw head in a ratcheting motion and then close again themselves under the action of the spring on the two gripping jaws.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH114330T | 1928-02-07 | ||
CH136845T | 1928-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH136845A true CH136845A (en) | 1929-11-30 |
Family
ID=25708320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH136845D CH136845A (en) | 1928-02-07 | 1928-02-07 | Wrench. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH136845A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE952069C (en) * | 1952-08-22 | 1956-11-08 | Otto Weiss | Single-legged dental joint pliers |
FR2472965A1 (en) * | 1980-01-03 | 1981-07-10 | Valibus Alain | Open spanner with jaw play aiding nut engagement - uses swivel jaw pinned to fixed jaw with lever end rotating to eliminate play |
WO2001023145A1 (en) * | 1999-09-28 | 2001-04-05 | Facom | Rotational driving tool for screwing member |
-
1928
- 1928-02-07 CH CH136845D patent/CH136845A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE952069C (en) * | 1952-08-22 | 1956-11-08 | Otto Weiss | Single-legged dental joint pliers |
FR2472965A1 (en) * | 1980-01-03 | 1981-07-10 | Valibus Alain | Open spanner with jaw play aiding nut engagement - uses swivel jaw pinned to fixed jaw with lever end rotating to eliminate play |
WO2001023145A1 (en) * | 1999-09-28 | 2001-04-05 | Facom | Rotational driving tool for screwing member |
US6557441B1 (en) | 1999-09-28 | 2003-05-06 | Facom | Rotational driving tool for screwing member |
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