CH113786A - Cap screw. - Google Patents

Cap screw.

Info

Publication number
CH113786A
CH113786A CH113786DA CH113786A CH 113786 A CH113786 A CH 113786A CH 113786D A CH113786D A CH 113786DA CH 113786 A CH113786 A CH 113786A
Authority
CH
Switzerland
Prior art keywords
screw
recess
head
cap screw
pyramid
Prior art date
Application number
Other languages
German (de)
Inventor
Jules Suchsland
Original Assignee
Jules Suchsland
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 Jules Suchsland filed Critical Jules Suchsland
Publication of CH113786A publication Critical patent/CH113786A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00Screwdrivers
    • B25B15/02Screwdrivers operated by rotating the handle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00Screwdrivers
    • B25B15/001Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)

Description

  

  Kopfschraube.    Die vorliegende Erfindung hat eine Kopf  schraube zum Gegenstand, die als Holz- und  Metallschraube Verwendung finden kann.  Der Kopf dieser Schraube kann jede mögliche  Form haben, wie-.     Versenkkopf,    Linsenkopf,  Rundkopf, Zylinderkopf. Zum Zwecke des       Einschraubens    ist in der     blatte    des Kopfes  eine Vertiefung vorgesehen. Diese Vertiefung  hat die Form eines     Pyramidenstumpfes.    Die  Seitenflächen haben nach dem Grunde der  Vertiefung schwachen Anzug. Der Quer  schnitt dieser Vertiefung ist zweckmässig  quadratisch, kann aber auch     dreieck-    oder       polygonförrnig    sein. Der Grund der Ver  tiefung ist zweckmässig pyramidenförmig aus  gebildet.

   Die Kanten der Vertiefung mit der  Oberfläche des Kopfes der Schraube sind  zweckmässig schwach gebrochen.  



  Ein grosser Vorteil dieser Schraube gegen  über den heute gebräuchlichen ist die     urn     vieles grössere mechanische Festigkeit des  Schraubenkopfes. Infolge des schwachen An  zuges der Seitenflächen der, Vertiefung kann  die Schraube auf den Schraubenzieher auf  gesteckt werden und ist     beim    Einschrauben  jedes     Wackeln    der Schraube ausgeschlossen,    was ein sicheres und schnelles Arbeiten     er-          möglicht.     



  Sind die     Kanten    schwach gebrochen, so  hat die Schraube ein gefälliges Aussehen und  Verletzungen an der Schraube sind ausge  schlossen. Wenn eine solche Schraube mit  dem     Hammer    eingeschlagen wird, so leidet  sie weniger Schaden als eine Schraube mit  Schlitz. Eine ganze Serie Schrauben mit  verschiedener Grösse können mit der gleichen  Vertiefung versehen werden. Nach mehr  maligem Ein- und Ausschrauben zeigt die  Schraube absolut keine Spuren von Abnützung.  



  Die Zeichnung zeigt als Ausführungsbei  spiel des Erfindungsgegenstandes eine Holz  schraube. Die Vertiefung hat die Form eines  vierseitigen     Pyramidenstumpfes,    deren Seiten  flächen b nach dem Grunde hin einen schwa  chen Anzug (ca.     10 )    haben, und den Sitz  für den Schraubenzieher bilden. Der Grund c  der Vertiefung ist pyramidenförmig. Die  Neigung der Seiten dieser Pyramide zur       Schraubenaxe    ist ca 60 . Sie kann aber auch  geringer sein zum Beispiel 30 .

   Die Kanten     a     der Vertiefung an der Oberfläche des Schrauben  kopfes sind schwach     gebrochep.         Der Schraubenzieher besitzt eineu der  Vertiefung entsprechenden Kopf, der nur an  den Seitenflächen b anliegt Dadurch wird  ein sicherer Sitz     erreicht.    Die Schraube     kann     mühelos mit einer Hand     eingeschraubt    werden.



  Cap screw. The present invention has a head screw as an object that can be used as a wood and metal screw. The head of this screw can be any shape, like-. Countersunk head, pan head, round head, cylinder head. For the purpose of screwing in, a recess is provided in the blade of the head. This depression has the shape of a truncated pyramid. After the bottom of the depression, the side surfaces are weak. The cross-section of this recess is expediently square, but can also be triangular or polygonal. The bottom of the recess is expediently formed in a pyramid shape.

   The edges of the recess with the surface of the head of the screw are suitably slightly broken.



  A major advantage of this screw compared to the one commonly used today is the much greater mechanical strength of the screw head. As a result of the weak attraction of the side surfaces of the recess, the screw can be pushed onto the screwdriver and any wobbling of the screw is excluded when screwing in, which enables safe and quick work.



  If the edges are slightly broken, the screw has a pleasing appearance and injuries to the screw are excluded. If such a screw is driven in with a hammer, it will suffer less damage than a screw with a slot. A whole series of screws of different sizes can be provided with the same recess. After screwing it in and out several times, the screw shows absolutely no signs of wear.



  The drawing shows a wood screw as Ausführungsbei game of the subject invention. The recess is in the shape of a four-sided truncated pyramid, the sides of which have b towards the bottom a weak chen suit (about 10), and form the seat for the screwdriver. The bottom c of the recess is pyramidal. The inclination of the sides of this pyramid to the screw axis is approx. 60. But it can also be lower, for example 30.

   The edges a of the recess on the surface of the screw head are weakly broken. The screwdriver has a head corresponding to the recess, which only rests on the side surfaces b. This ensures a secure fit. The screw can be easily screwed in with one hand.

 

Claims (1)

PATENTANSPRUCH Kopfschraube welche zum Einschrauben in der Mitte des Kopfes eine Vertiefung von der Form eines Pyramidenstumpfes be- sitzt, dessen Seitenflächen nach dem Grunde der Vertiefung schwachen Anzug haben. UNTERANSPRÜCHE: 1. Kopfschraube nach Patentanspruch, mit einem py ramidenftirmigausgebildeten Grund der Vertiefung. 2. Kopfschraube nach Patentanspruch, deren Vertiefungskanten an der Oberfläche des Schraubenkopfes sehwach gebrochen sind. PATENT CLAIM Head screw which has a recess in the middle of the head in the shape of a truncated pyramid, the side surfaces of which are weakly tightened at the bottom of the recess. SUBClaims: 1. Head screw according to claim, with a pyramid-shaped base of the recess. 2. Head screw according to claim, the recess edges of which are very weakly broken on the surface of the screw head.
CH113786D 1925-01-30 1925-01-30 Cap screw. CH113786A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH113786T 1925-01-30

Publications (1)

Publication Number Publication Date
CH113786A true CH113786A (en) 1926-02-01

Family

ID=4372929

Family Applications (1)

Application Number Title Priority Date Filing Date
CH113786D CH113786A (en) 1925-01-30 1925-01-30 Cap screw.

Country Status (1)

Country Link
CH (1) CH113786A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470282A (en) * 1947-07-28 1949-05-17 Frederick C Baker Mounting for shafts and the like
DE871232C (en) * 1950-10-31 1953-04-13 Erich Dipl-Ing Aue Slotted screw
US2804894A (en) * 1954-08-20 1957-09-03 Cornwall & Patterson Company Screw driver
US4503737A (en) * 1983-04-11 1985-03-12 Digiovanni Donald Threaded fastener removing tool
US5224402A (en) * 1990-09-05 1993-07-06 Sandvik Aktiebolag Screw and screwdriver therefor
ITRN20110005A1 (en) * 2011-01-24 2011-04-25 Polykap S R L THREADED CAP SYSTEM AND RELATIVE SCREWDRIVER
US20230092718A1 (en) * 2021-09-22 2023-03-23 Chien-Ho WANG Building formwork apparatus having locking member
US20230093561A1 (en) * 2021-09-22 2023-03-23 Chien-Ho WANG Locking member for building formworks

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470282A (en) * 1947-07-28 1949-05-17 Frederick C Baker Mounting for shafts and the like
DE871232C (en) * 1950-10-31 1953-04-13 Erich Dipl-Ing Aue Slotted screw
US2804894A (en) * 1954-08-20 1957-09-03 Cornwall & Patterson Company Screw driver
US4503737A (en) * 1983-04-11 1985-03-12 Digiovanni Donald Threaded fastener removing tool
US5224402A (en) * 1990-09-05 1993-07-06 Sandvik Aktiebolag Screw and screwdriver therefor
ITRN20110005A1 (en) * 2011-01-24 2011-04-25 Polykap S R L THREADED CAP SYSTEM AND RELATIVE SCREWDRIVER
EP2479006A1 (en) * 2011-01-24 2012-07-25 Polykap S.R.L. Threaded plug and screwdriver device
US20230092718A1 (en) * 2021-09-22 2023-03-23 Chien-Ho WANG Building formwork apparatus having locking member
US20230093561A1 (en) * 2021-09-22 2023-03-23 Chien-Ho WANG Locking member for building formworks
US11976478B2 (en) * 2021-09-22 2024-05-07 Chien-Ho WANG Building formwork apparatus having locking member

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