DE829386C - Fastening screw - Google Patents

Fastening screw

Info

Publication number
DE829386C
DE829386C DEW553A DEW0000553A DE829386C DE 829386 C DE829386 C DE 829386C DE W553 A DEW553 A DE W553A DE W0000553 A DEW0000553 A DE W0000553A DE 829386 C DE829386 C DE 829386C
Authority
DE
Germany
Prior art keywords
screw
fastening screw
longitudinal axis
parallel
slot
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
DEW553A
Other languages
German (de)
Inventor
Carl Weber
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DEP34159A external-priority patent/DE813222C/en
Application filed by Individual filed Critical Individual
Priority to DEW553A priority Critical patent/DE829386C/en
Application granted granted Critical
Publication of DE829386C publication Critical patent/DE829386C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Dowels (AREA)

Description

Die vorliegende Erfindung betrifft eine Befestigungsschraube nach Patent 813222, an deren Spitze eine oder mehrere, sich übereinige Gewindegänge erstreckende Flächen angeschliffen sind, derart, daß eine Kante dieser Flächen als. Gewindeschneider dienen 'kann.The present invention relates to a fastening screw according to U.S. Patent 813222, at the tip of which one or more overlapping threads extending Surfaces are ground in such a way that one edge of these surfaces as. Thread cutter can serve.

Es hat sich ergeben, daß das Gewindeschneiden, wie auch das Wiederherausschrauben der Schraube erheblich erleichtert wird, wenn .die angeschliffenen oder ausgearbeiteten Flächen parallel zur Längsachse der Schraube verlaufen. Eine solche Anbringung dieser Flächen an der Schraubenspitze kann auf verschiedene Weise erfolgen. Es kann beispielsweise das Schraubenende winkelförmig ausgefräst oder es kann auch mit einem einfachen oder einem Kreuzschlitz versehen sein.It has been found that thread cutting as well as unscrewing the screw is made much easier if .the ground or machined Surfaces run parallel to the longitudinal axis of the screw. Such an attachment of this Surfaces on the screw tip can be done in a number of ways. For example the end of the screw is milled out at an angle or it can also be done with a simple or a cross recess.

In der Zeichnung sind einige Ausführungsbeispiele des Erfindungsgegenstandes dargestellt. Abb. i bis 3 zeigen je ein Teilstück eines Schraubenstiftes, an dessen Spitze eine oder mehrere Flächen ausgearbeitet sind, die parallel zur Längsachse der Schraub.. verlaufen; Abb. 4 bis 6 sind Querschnitte nach den Linien -4--h 5-5 und 6-6 in den bezüglichen Abb. i, 2 und 3; AM). i und 4 zeigen einen Schraubenbolzen, der am Ende mit einem rechteckigen Ausschnitt c versehen ist. Der Ausschnitt kann dabei die Hälfte des Bolzenquerschnittes einnehmen oder auch kleiner sein.Some exemplary embodiments of the subject matter of the invention are shown in the drawing. Fig. I to 3 each show a section of a screw pin, at the tip of which one or more surfaces are worked out, which run parallel to the longitudinal axis of the screw ..; Figs. 4 to 6 are cross-sections along the lines -4 - h 5-5 and 6-6 in the related Figs. I, 2 and 3; AT THE). i and 4 show a screw bolt which is provided with a rectangular cutout c at the end. The cutout can take up half the cross-section of the bolt or it can be smaller.

Nach Abb. 2 und 5 ist in das Ende des Schraubenbolzens ein mittlerer Schlitz d eingeschnitten, dessen Begrenzungsflächen parallel zur Längsachse des Bolzens stehen. Jede Fläche bildet dabei eine Kante zum Gewindeschneiden. Der genannte Schlitz kann auch verdoppelt werden, so daß gemäß Abb. 3 und 6 ein Kreuzschlitz d, e entsteht.According to Fig. 2 and 5 there is a middle one in the end of the screw bolt Slit d incised, the boundary surfaces of which are parallel to the longitudinal axis of the Bolt stand. Each surface forms an edge for thread cutting. The said The slot can also be doubled so that, as shown in Fig. 3 and 6, a cross slot d, e arises.

Alle aasgefrästen oder ausgearbeiteten Flächen erstrecken sich auf eine Länge von etwa zwei bis drei Gewindegängen. Alle beschriebenen Ausführungen, besonders diejenigen mit Mittelschlitz, ermöglichen mit Leichtigkeit und ohne Schwierigkeiten das Schneiden von Innengewinden, insbesondere in zähes und sprödes Kunststoffmaterial. Ferner lassen sich auch dis gemäß der Erfindung zugerichteten Schrauben leicht und mühelos wieder aus der Gewindebohrung herausschrauben. .All the milled or machined surfaces extend to a length of about two to three threads. All described versions, especially those with a center slot, allow with ease and without difficulty cutting internal threads, especially in tough and brittle plastic material. Furthermore, the screws prepared according to the invention can also be easily and Easily unscrew from the threaded hole again. .

Claims (1)

PATENTANSPRÜCHE: i. Befestigungsschraube nach Patent 813 222, dadurch gekennzeichnet, daß im Falle mehrerer angeschliffener Flächen diese parallel zur Längsachse der Schraube verlaufen oder daß im Falle einer Fläche diese durch einen winkelförmigen Ausschnitt am Schrauhenende gebildet ist. z. Befestigungsschraube nach Anspruch i, dadurch gekennzeichnet,,daß die Flächen durch einen parallel zur Längsachse der Schraube gerichteten Schlitz gebildet sind. 3. B,°festi.gungsscliraul)e nach Anspruch 2, dadurch gekennzeichnet, claß _ das Schraubenende mit einem Mittelschlitz versehen ist. Befestigungsschraube nach Anspruch 2. dadurch gekennzeichnet. daß das Schraubenende mit einem Kreuzschlitz ausgebildet ist.PATENT CLAIMS: i. Fastening screw according to patent 813 222, thereby characterized in that in the case of several sanded surfaces, these parallel to Run longitudinal axis of the screw or that in the case of a surface this through a angular cutout is formed at the end of the screw. z. Fastening screw according to claim i, characterized in that the surfaces by a parallel to Longitudinal axis of the screw-directed slot are formed. 3. B, ° festi.gungsscliraul) e according to claim 2, characterized in that the screw end with a central slot is provided. Fastening screw according to claim 2, characterized. that the screw end is formed with a cross recess.
DEW553A 1949-02-15 1949-12-06 Fastening screw Expired DE829386C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW553A DE829386C (en) 1949-02-15 1949-12-06 Fastening screw

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP34159A DE813222C (en) 1949-02-15 1949-02-15 Fastening screw
DEW553A DE829386C (en) 1949-02-15 1949-12-06 Fastening screw

Publications (1)

Publication Number Publication Date
DE829386C true DE829386C (en) 1952-01-24

Family

ID=25990302

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW553A Expired DE829386C (en) 1949-02-15 1949-12-06 Fastening screw

Country Status (1)

Country Link
DE (1) DE829386C (en)

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