AT117641B

AT117641B - Rotary can opener handles and methods of making them.

Info

Publication number: AT117641B
Authority: AT
Inventors: Bohumil Polak
Original assignee: Bohumil Polak
Priority date: 1928-05-14
Filing date: 1928-11-28
Publication date: 1930-05-10

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 Grundebene der Hubscheibe geneigt sind, dass ihre Scheitel in lotrechter Projektion ausserhalb der Umrisslinie der Hubscheibe 4"liegen. Nach dieser Ausführungsform brauchen die Handgriffe 1"keine Ausschnitte in der zylindrischen Wand zu besitzen. 



   Die Handgriffe gemäss der zweiten   Ausführungsform   werden erfindungsgemäss vorzugsweise auf folgende Weise hergestellt : Die Handgriffe werden zunächst durch Pressen od. dgl. als zylindrische oder konisehe, hohle, oben   hoNkugelförmig   abgerundete, annähernd senkrecht zur Grundebene der Hubscheibe 4"vorstehende Körper   1" geformt,   wobei jedoch der Mittelteil der Hubscheibe   4" derart   ausgebaucht wird, dass dieser mit seiner konkaven Seite den Körpern 1"zugewendet ist.

   Die beiden vom Drehmittelpunkte am weitesten entfernten und die Vorsprünge 1" teilweise umgehenden Partien der Umrisslinie der Hubscheibe   4" werden   nun vorgeschnitten, wonach der Mittelteil der Hubscheibe 4" so weit durchgebogen wird, bis dieser statt mit der konkaven mit der konvexen Seite den Vorsprüngen 1" zugewendet wird, wobei der Halbmesser dieser endgültigen Ausbauchung ungefähr dem Halbmesser der Dose entspricht. Dabei erhalten gleichzeitig die Vorsprünge 1"ihre geneigte Endlage. Alsdann kann die Umrisslinie der Hubscheibe zur Gänze herausgeschnitten werden. 



   PATENT-ANSPRÜCHE :
1. Handgriffe für drehbare Dosenöffner dadurch gekennzeichnet, dass diese im durch die Längsachse der Hubscheibe gelegten Längsschnitte einen annähernd ovalen äusseren Umriss aufweisen und am äusseren Ende hohlkegelförmig abgeschlossen sind.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 Base plane of the lifting disc are inclined so that their vertices lie in a vertical projection outside the contour line of the lifting disc 4 ". According to this embodiment, the handles 1" do not need to have any cutouts in the cylindrical wall.



   The handles according to the second embodiment are preferably produced according to the invention in the following way: The handles are first formed by pressing or the like as cylindrical or conical, hollow, spherically rounded at the top, approximately perpendicular to the base plane of the lifting disk 4 "protruding bodies 1", whereby however, the middle part of the lifting disk 4 ″ is bulged in such a way that its concave side faces the bodies 1 ″.

   The two parts of the contour line of the lifting disk 4 "which are furthest away from the center of rotation and which partially bypassing the projections 1" are now pre-cut, after which the middle part of the lifting disk 4 "is bent until it, instead of the concave side, meets the projections 1 with the convex side ", the radius of this final bulge being approximately the same as the radius of the can. At the same time, the projections 1 ″ receive their inclined end position. The contour line of the lifting disk can then be cut out entirely.



   PATENT CLAIMS:
1. Handles for rotatable can openers, characterized in that they have an approximately oval outer contour in the longitudinal section laid through the longitudinal axis of the lifting disc and are closed in the shape of a hollow cone at the outer end.

Claims

2. Handle according to claim 1, characterized in that its apex lies at a distance from the pivot point of the lifting disc which is greater than the largest radius of the lifting disc.

3. A method for producing handles according to claim 1 or 2, characterized in that the handles are initially formed as cylindrical or conical, hollow, hemispherical rounded projections at the top by pressing or the like, after which these projections in the direction of the hub disc center be bent away in the longitudinal axis direction of the hub disc center.

4. The method according to claim 3, characterized in that incisions are produced in the side walls of the projections facing away from the center of the lifting disk before turning.

5. The method according to claim 3, characterized in that when the projections are formed, the central part of the lifting disc is initially bulged with its concave side and only afterwards with its convex side against these projections.

6. The method according to claim 3, characterized in that, prior to the bending of the projecting rings, the two parts of the contour line of the lifting disc which are furthest away from the center of rotation and which partially surround the projections are provided.