DE657438C - Ratchet screwdriver for electrical work - Google Patents

Ratchet screwdriver for electrical work

Info

Publication number
DE657438C
DE657438C DEF78781D DEF0078781D DE657438C DE 657438 C DE657438 C DE 657438C DE F78781 D DEF78781 D DE F78781D DE F0078781 D DEF0078781 D DE F0078781D DE 657438 C DE657438 C DE 657438C
Authority
DE
Germany
Prior art keywords
ratchet
electrical work
screwdriver
ratchet screwdriver
screwdrivers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEF78781D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Priority to DEF78781D priority Critical patent/DE657438C/en
Application granted granted Critical
Publication of DE657438C publication Critical patent/DE657438C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/12—Handle constructions characterised by material or shape electrically insulating material
    • B25G1/125—Handle constructions characterised by material or shape electrically insulating material for screwdrivers, wrenches or spanners

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

Knarrenschraubenzieher für elektrische Arbeiten Die Erfindung betrifft einen Knarrenschraubenzieher, mit dem unter elektrischem Strom gefahrlos gearbeitet werden kann. Bisher wurden Schraubenzieher dieser Art mit Griffen aus kiinstlichem Preßstoff ausgestattet. Bei dieser Ausführung besteht die große Schwierigkeit, die gesamte Knarrmechanik einschließlich des Griffes zu isolieren, wodurch diese Konstruktion nicht die unbedingt erforderliche Sicherheit erreicht.Ratchet screwdrivers for electrical work The invention relates to a ratchet screwdriver that works safely under electric current can be. So far, screwdrivers of this type have been made with artificial handles Equipped with molded material. In this embodiment, there is the great difficulty that isolate the entire ratchet mechanism including the handle, making this construction does not achieve the absolutely necessary security.

Die Erfindung besteht gegenüber den bekannten Knarrenschraubenziehern für @elektrische Arbeiten. darin, daß der Schraubenzieherschaft vor .der Knarrmechanik unterbrochen und beide Teile des. Schaftes durch eine Kupplungsmuffe aus Isolierstoff verbunden sind, wodurch Handgriffe aus beliebigen, nicht isolierten Stoffen (Holz, Metall usw.) verwendet werden können. Es wird dadurch erreicht, d,aß sämtliche bisher gebräuchlichen Griffe für Knarrenschraubenzieherohne weiteres ,angewendet werden können und dabei vollkommener Isolierschutz besteht. Die Knarrmechanik, die weiter in ihrer bewährten Konstruktion verwendet werden kann, ist dadurch ebenfalls völlig isoliert.The invention exists over the known ratchet screwdrivers for @electrical work. that the screwdriver shaft in front of the ratchet mechanism interrupted and both parts of the. Shank by a coupling sleeve made of insulating material are connected, which means that handles made of any non-insulated material (wood, Metal, etc.) can be used. It is achieved by eating all of them so far common handles for ratchet screwdrivers without further ado and there is complete insulation protection. The creak mechanism that continues can be used in their proven construction, is thereby also completely isolated.

Die Zeichnung zeigt ein Ausführungsbeispiel des Erfindungsgegenstandes. Der - Isolierstoff a ist in eine Metallhülse b gepreßt und erhält von beiden Seiten die jeweils gewünschte Bohrung und Tiefe, so daß eine Zwischenwand zwischen den Schaftteilen stehenbleibt. Die Schraubenzieherklinge c, die mit angepreßten Keilen versehen ist, wird dann unter Druck in die Bohrung der Isoliermasse eingeschoben. Die Knarrmechanik wird auf dieselbe Art mit der Muffe verbunden.The drawing shows an embodiment of the subject matter of the invention. The - insulating material a is pressed into a metal sleeve b and received from both sides the desired hole and depth, so that a partition between the Parts of the shaft remains. The screwdriver blade c, the one with the wedges pressed on is provided, is then pushed into the hole of the insulating compound under pressure. The ratchet mechanism is connected to the sleeve in the same way.

Claims (1)

PATENTAN SFrucFI Knarrenschraubenzieher für elektrische Arbeiten, dadurch gekennzeichnet, d.aß der Schaft zwischen der Schneide des Schraubenziehers und der Knarrvorrichtung unterbrochen ist und die beiden Teile durch .eine Kupplungsmuffe aus Isolierstoff verbunden sind.PATENTAN SFrucFI ratchet screwdriver for electrical work, characterized in that the shank between the cutting edge of the screwdriver and the ratchet is interrupted and the two parts by .eine coupling sleeve are connected from insulating material.
DEF78781D Ratchet screwdriver for electrical work Expired DE657438C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF78781D DE657438C (en) Ratchet screwdriver for electrical work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF78781D DE657438C (en) Ratchet screwdriver for electrical work

Publications (1)

Publication Number Publication Date
DE657438C true DE657438C (en) 1938-03-04

Family

ID=7113154

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF78781D Expired DE657438C (en) Ratchet screwdriver for electrical work

Country Status (1)

Country Link
DE (1) DE657438C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144901A1 (en) * 1981-11-12 1983-05-19 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Electrically insulated connection between two rod-shaped metal elements arranged on a common axis
US6378402B1 (en) 2000-02-29 2002-04-30 Black & Decker Inc. Hand tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3144901A1 (en) * 1981-11-12 1983-05-19 Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart Electrically insulated connection between two rod-shaped metal elements arranged on a common axis
US6378402B1 (en) 2000-02-29 2002-04-30 Black & Decker Inc. Hand tool

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