AT37301B - Wood screw with drill grooves in the screw head. - Google Patents

Wood screw with drill grooves in the screw head.

Info

Publication number
AT37301B
AT37301B AT37301DA AT37301B AT 37301 B AT37301 B AT 37301B AT 37301D A AT37301D A AT 37301DA AT 37301 B AT37301 B AT 37301B
Authority
AT
Austria
Prior art keywords
screw
head
grooves
wood
drill grooves
Prior art date
Application number
Other languages
German (de)
Inventor
Walter Christopher Jordan
Original Assignee
Walter Christopher Jordan
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
Application filed by Walter Christopher Jordan filed Critical Walter Christopher Jordan
Application granted granted Critical
Publication of AT37301B publication Critical patent/AT37301B/en

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Description

  

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 anlasst wird. Die obere Kante der Schneidnut 9 kann mit der Kante des Schraubenkopfes   zusammenfallen, während die Nut selbst, in einem Anschlag 10 endet, der, wenn der Kopf so weit eingedreht ist, dass seine Oberfläche mit der Oberfläche des Holzes in einer Ebene   liegt, ein Weiterdrehen der Schraube verhindert. Die Zahl der spiralförmig oder geradlinig angeordneten Nuten kann je nach der Grösse der Schrauben schwanken. Hierbei ist es auch nicht notwendig, dass alle Bohrnuten mit den zur Versenkung des Kopfes dienenden Nuten direkt korrespondieren und ineinander übergehen. Die zum Versenken des Kopfes dienenden Nuten sind ebenso wirksam, wenn sie nicht in die Bohrnuten überlaufen.

   Die Tiefe der Nuten ist von keiner grösseren   Bedeutung ; wenngleich   es zweckmässig ist, sie   annähernd so   tief zu halten, wie das Sohraubengewinde selbst. Die Schraube selbst kann entweder über ihre ganze Länge gleichen Durchmesser haben, oder auch, wie allgemein üblich, konisch zulaufen.



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 is started. The upper edge of the cutting groove 9 can coincide with the edge of the screw head, while the groove itself ends in a stop 10 which, when the head is screwed in so far that its surface is in one plane with the surface of the wood, continues turning the screw prevents. The number of spirally or linearly arranged grooves can vary depending on the size of the screws. It is also not necessary here for all of the drilled grooves to correspond directly to the grooves used to countersink the head and to merge into one another. The grooves used to countersink the head are also effective if they do not overflow into the drill grooves.

   The depth of the grooves is of no great importance; although it is advisable to keep it approximately as deep as the screw thread itself. The screw itself can either have the same diameter over its entire length or, as is common practice, taper conically.

Claims (1)

PATENT-ANSPRUCH : Holzschraube mit Bohrnuten im Schraubenkopf, dadurch gekennzeichnet, dass die im Schraubenkopf (2) unterhalb der Oberfläche endenden Nuten (9) zu einem Anschlag (10) führen, der ein Weiterdrehen der Schraube verhindert, sobald die Oberfläche des Kopfes mit jener des Holzes in einer Ebene liegt. EMI2.2 PATENT CLAIM: Wood screw with drill grooves in the screw head, characterized in that the grooves (9) ending in the screw head (2) below the surface lead to a stop (10) which prevents the screw from turning any further as soon as the surface of the head meets that of the wood Level lies. EMI2.2
AT37301D 1908-01-07 1908-01-07 Wood screw with drill grooves in the screw head. AT37301B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT37301T 1908-01-07

Publications (1)

Publication Number Publication Date
AT37301B true AT37301B (en) 1909-05-25

Family

ID=3554595

Family Applications (1)

Application Number Title Priority Date Filing Date
AT37301D AT37301B (en) 1908-01-07 1908-01-07 Wood screw with drill grooves in the screw head.

Country Status (1)

Country Link
AT (1) AT37301B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3143120A1 (en) * 1981-10-30 1983-05-11 Wilhelm 5820 Gevelsberg Bieker Cap screw for screwing boards on, especially gypsum fibre boards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3143120A1 (en) * 1981-10-30 1983-05-11 Wilhelm 5820 Gevelsberg Bieker Cap screw for screwing boards on, especially gypsum fibre boards

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