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CH241061A - Cylinder head screw. - Google Patents

Cylinder head screw.

Info

Publication number
CH241061A
CH241061A CH241061DA CH241061A CH 241061 A CH241061 A CH 241061A CH 241061D A CH241061D A CH 241061DA CH 241061 A CH241061 A CH 241061A
Authority
CH
Switzerland
Prior art keywords
slots
head
screw
cylinder head
cylinder screw
Prior art date
Application number
Other languages
German (de)
Inventor
Heusser Edwin
Original Assignee
Heusser Edwin
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 Heusser Edwin filed Critical Heusser Edwin
Publication of CH241061A publication Critical patent/CH241061A/en

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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

  

  Zylinderschraube.    Gegenstand vorliegender Erfindung ist  eine Zylinderschraube mit     mehreren    radialen  Schlitzen, deren Ausbildung und Anordnung  bezweckt, den     Schraubenkopf    möglichst  wenig zu schwächen.  



  Erfindungsgemäss nehmen die Schlitze  vom Kopfumfang gegen das Zentrum. der  Kopffläche an Tiefe ab. Auch bei kleinen  Abmessungen des Kopfes ist daher starkes  Anziehen der Schraube möglich, ohne dass ein  Ausbrechen einzelner Kopfteile erfolgt.  



  Auf     beiliegender    Zeichnung ist der     Erfin-          dungsgegenstand    in einer beispielsweisen  Ausführungsform in     Fig.    1     und    2 zur Dar  stellung gebracht, und es zeigt:       Fig.    1     einen        Axialschnitt    nach der Linie  1-1 der     Fig.    2,       Fig.    2 eine Ansicht von oben, während       Fig.3    den zur Anwendung kommenden       Schlüssel        darstellt.     



  Die Schraube .hält die Teile 1 und 2 zu  sammen und deren Kopf 3 ist in Teil 1 ver  senkt. Die drei radial in den Schraubenkopf  eingefrästen Schlitze 4, 5 und 6 bilden unter-    einander Winkel von     12,0 .    Sie beginnen am  Rande in einer bestimmten Tiefe, verlaufen  bezüglich ihrer Tiefe abnehmend und treffen  im Zentrum der Kopffläche zusammen.  



       Diese    Ausführungsform hat sich in der  Praxis am vorteilhaftesten erwiesen.  



  Die Anzahl der Schlitze     könnte    selbstver  ständlich auch nur zwei oder mehr als     drei     sein.  



  Die Winkel zwischen je zwei Schlitzen  könnten auch ungleich sein, für den Fall,  dass die Schraube als Geheimschraube ver  wendet würde.  



  Zum Festziehen und Lösen der Schraube  wird ein Schlüssel verwendet, wie ihn     Fig.    3  teilweise     darstellt.    Die Lappen 4', 5' und 6'  entsprechen in ihrer Form und Stellung der  jenigen der Schraubenschlitze. Der verlän  gerte Schaft kann mit einem Griff versehen  oder zu     einem    Hebel abgebogen sein.



  Cylinder head screw. The subject of the present invention is a cylinder screw with several radial slots, the design and arrangement of which is intended to weaken the screw head as little as possible.



  According to the invention, the slots extend from the head circumference towards the center. the head surface in depth. Even with small head dimensions, the screw can therefore be tightened strongly without individual head parts breaking out.



  The subject of the invention is shown in an exemplary embodiment in FIGS. 1 and 2 in the accompanying drawing, and it shows: FIG. 1 an axial section along the line 1-1 of FIG. 2, FIG. 2 a view from above , while Fig.3 shows the key to be used.



  The screw. Holds parts 1 and 2 together and the head 3 is lowered in part 1 ver. The three slots 4, 5 and 6 milled radially into the screw head form an angle of 12.0 with one another. They start at the edge at a certain depth, decrease in depth and meet in the center of the head surface.



       This embodiment has proven to be the most advantageous in practice.



  The number of slots could of course also be only two or more than three.



  The angles between each two slots could also be unequal, in the event that the screw were used as a secret screw.



  A key is used to tighten and loosen the screw, as shown partially in FIG. The tabs 4 ', 5' and 6 'correspond in shape and position to those of the screw slots. The extended shaft can be provided with a handle or bent to a lever.

Claims (1)

PATENTANSPRUCH: Zylinderschraube, gekennzeichnet durch mehrere Schlitze, die am Kopf radial ein- gefräst sind und deren Tiefe vom Rande des Kopfes gegen das Zentrum der Kopffläche abnimmt. UNTERANSPRüCHE : 1. Zylinderschraube gemäss Patentan spruch, dadurch gekennzeichnet, dass die Schlitze im Zentrum .der Kopffläche zusam mentreffen. 2. Zylinderschraube gemäss Patentan spruch und Unteranspruch 1, gekennzeichnet durch drei Schlitze, die untereinander Win kel von 12,0 bilden. 3. PATENT CLAIM: Cylinder screw, characterized by several slots that are milled radially on the head and the depth of which decreases from the edge of the head towards the center of the head surface. SUBSTANTIAL CLAIMS: 1. Cylinder screw according to patent claim, characterized in that the slots meet in the center of the top surface. 2. Cylinder screw according to claim and dependent claim 1, characterized by three slots that form an angle of 12.0 with each other. 3. Zylinderschraube gemäss Patentan- spruch und Unteranspruch 1, dadurch gekenn zeichnet, dass die Winkel zwischen je zwei Schlitzen untereinander gleich sind. 4. Zylinderschraube gemäss Patentan spruch und Unteranspruch 1, dadurch ge kennzeichnet, dass die Winkel zwischen je zwei Schlitzen untereinander ungleich sind. Cylinder screw according to claim and dependent claim 1, characterized in that the angles between each two slots are equal to one another. 4. Cylinder screw according to claim and dependent claim 1, characterized in that the angles between each two slots are unequal.
CH241061D 1944-05-16 1944-05-16 Cylinder head screw. CH241061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH241061T 1944-05-16

Publications (1)

Publication Number Publication Date
CH241061A true CH241061A (en) 1946-02-15

Family

ID=4462133

Family Applications (1)

Application Number Title Priority Date Filing Date
CH241061D CH241061A (en) 1944-05-16 1944-05-16 Cylinder head screw.

Country Status (1)

Country Link
CH (1) CH241061A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE871232C (en) * 1950-10-31 1953-04-13 Erich Dipl-Ing Aue Slotted screw
US2750821A (en) * 1956-06-19 Tool for removing damaged screws
US2815054A (en) * 1953-09-08 1957-12-03 Phillips Screw Co Removal tool for recessed head screws
DE2641914A1 (en) * 1976-09-10 1978-03-23 Katsuyuki Totsu SCREW
FR2510683A1 (en) * 1981-07-30 1983-02-04 Illinois Tool Works HEAD FOR DRIVING A FASTENING MEMBER AND COUPLING TWO COAXIAL ELEMENTS

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750821A (en) * 1956-06-19 Tool for removing damaged screws
DE871232C (en) * 1950-10-31 1953-04-13 Erich Dipl-Ing Aue Slotted screw
US2815054A (en) * 1953-09-08 1957-12-03 Phillips Screw Co Removal tool for recessed head screws
DE2641914A1 (en) * 1976-09-10 1978-03-23 Katsuyuki Totsu SCREW
FR2370190A1 (en) * 1976-09-10 1978-06-02 Totsu Katsuyuki SCREW AND SCREWDRIVER SUITABLE FOR THIS SCREW
FR2510683A1 (en) * 1981-07-30 1983-02-04 Illinois Tool Works HEAD FOR DRIVING A FASTENING MEMBER AND COUPLING TWO COAXIAL ELEMENTS

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