AT74476B - Process for making drawing board pens. - Google Patents
Process for making drawing board pens.Info
- Publication number
- AT74476B AT74476B AT74476DA AT74476B AT 74476 B AT74476 B AT 74476B AT 74476D A AT74476D A AT 74476DA AT 74476 B AT74476 B AT 74476B
- Authority
- AT
- Austria
- Prior art keywords
- pin
- drawing board
- thickening
- making drawing
- head plate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 230000008719 thickening Effects 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 210000000436 anus Anatomy 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
Landscapes
- Confectionery (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Description
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Verfahren zur Herstellung von Reissbrettstiften.
Man hat bisher Reissbrettstifte durch Ausstanzen aus einer Kopfplatte in der Weise hergestellt, dass der Stift von der Mitte der Platte aus in radialer Richtung bereits in der endgültigen Keilform, die der Stift hat, ausgestanzt, umgebogen und alsdann gestreckt wurde, um ihm die erforderliche, grössere Länge zu geben, die sich nicht von vornherein beim Ausstanzen erzielen liess, weil der Radius der Kopfplatte kleiner ist als die Länge, die der Stift erhalten soll.
Die in dieser Weise hergestellten Reissbrettstifte weisen jedoch den Übelstand auf, dass die Stifte oder
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wird dann nachträglich durch Strecken entfernt, ohne dass der Stift selbst eine Schwächung und Verdünnung erfährt. Auf diese Weise ist es ebenfalls möglich, dem Stift eine den Radius der Kopfplatte überschreitende Länge zu geben und ihm dabei doch die erforderliche Widerstands- fähigkeit zu erhalten.
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dann der Stift b dif aus Fig. 3 ersichtliche Form und Länge annimmt. Dabei bleibt die Spitze d ohneweiters bestehen. Es ist also dadurch, dass die Verdickung c hinter die Spitze d verlegt ist, nicht erforderlich, die Spite erst nachträglich an dem Stift auszubilden.
Andererseits bleibt der Stift, abgesehen von der verdickten Stelle, ungeschwächt, insbesondere also auch an der Wurzd- uder Ans. atzstelle an der Kopfplatte.
Zweckmässig setzt diss Verdickung c in der aus Fig. 2 ersichtlichen Weise absatzartig an dem Stift b an, so dass dadurch ein Widerlager für das Werkzeug bei dem nachfolgenden Strecken des
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<Desc / Clms Page number 1>
Process for the production of drawing board pencils.
So far, drawing board pins have been produced by punching out of a head plate in such a way that the pin was punched out, bent over and then stretched from the center of the plate in the radial direction in the final wedge shape that the pin has, in order to give it the required to give greater length, which could not be achieved from the outset when punching out, because the radius of the head plate is smaller than the length that the pin should get.
The drawing board pens produced in this way, however, have the drawback that the pens or
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is then subsequently removed by stretching, without the pin itself being weakened or thinned. In this way it is also possible to give the pin a length that exceeds the radius of the head plate while still maintaining the required resistance.
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then the pin b dif from Fig. 3 assumes the shape and length shown. The point d remains unchanged. Because the thickening c is moved behind the tip d, it is not necessary to form the spite on the pin only afterwards.
On the other hand, apart from the thickened area, the pin remains undiminished, especially at the root of the anus. etching point on the head plate.
The thickening c expediently starts in the manner of a step on the pin b in the manner shown in FIG
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Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT74476T | 1915-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT74476B true AT74476B (en) | 1918-07-25 |
Family
ID=3596142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT74476D AT74476B (en) | 1915-11-13 | 1915-11-13 | Process for making drawing board pens. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT74476B (en) |
-
1915
- 1915-11-13 AT AT74476D patent/AT74476B/en active
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