DE662017C - Lampshade manufacture - Google Patents

Lampshade manufacture

Info

Publication number
DE662017C
DE662017C DEH150337D DEH0150337D DE662017C DE 662017 C DE662017 C DE 662017C DE H150337 D DEH150337 D DE H150337D DE H0150337 D DEH0150337 D DE H0150337D DE 662017 C DE662017 C DE 662017C
Authority
DE
Germany
Prior art keywords
layers
papers
lampshade
manufacture
lampshade manufacture
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEH150337D
Other languages
German (de)
Inventor
Fritz Herrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEH150337D priority Critical patent/DE662017C/en
Application granted granted Critical
Publication of DE662017C publication Critical patent/DE662017C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/02Frames

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)

Description

Lampenschirmherstellung Nahtlose. lichtdurchlässige Lampenschirme werden u. a. durch Schichtung z. B. von Papier hergestellt. Auf einer entsprechend gewölbten Arbeitsform werden dünne Papierschichten aufeinandergelegt und durch ein (flüssiges) Bindemittel verbunden. Die Schichtung ist bei weichen Papieren leicht durchführbar, weil diese Papiere sich der Form gut anschmiegen, sehr saugfähig sind und infolge ihrer Durchlässigkeit keine Luftblasen zwischen den einzelnen Schichten ientstehen. Es liegt in der Art der Papierfabrikation begründet, daß weiche Papiere nicht genügend lichtdurchlässig sind, wenigstens reicht die Transparenz weicher Papiere für gute, den Anforderungen der modernen Lichttechnik entsprechende Lichtschirme nicht aus. Durch Zugabe von Fettstoffen, meist Ölen, müßte die genügende Transparenz geschaffen werden. Für gute Lichtschirme, die eine lange Lebensdauer haben müssen, ist die Zugabe von Öl aber unerwünscht. Mineralische Öle trocknen nicht. Die Schirme bleiben immer fettig und binden dadurch zu stark Staub und Ruß. Trocknende (pflanzliche) Öle sind auch nicht verwendbar, weil diese schon nach kurzer Zeit einer zu starken Vergilbung unterliegen. Weiche Papiere haben außerdem eine für einen guten Lichtschirm ungenügende Steifheit.Lampshade making seamless. translucent lampshades are among others by layering z. B. made of paper. On a accordingly In the curved working form, thin layers of paper are placed on top of one another and through a (liquid) binder connected. Layering is easy with soft papers feasible because these papers cling to the shape well and are very absorbent and due to their permeability, no air bubbles between the individual layers i emerge. It is due to the nature of the paper manufacture that soft papers are not sufficiently translucent, at least the transparency is softer Papers for good light screens that meet the requirements of modern lighting technology not from. The addition of fatty substances, mostly oils, should provide sufficient transparency be created. For good light screens that have to have a long service life, however, the addition of oil is undesirable. Mineral oils do not dry. The umbrellas always remain greasy and thus bind too much dust and soot. Drying (vegetable) Oils cannot be used either because they become too strong after a short time Subject to yellowing. Soft papers also have one for a good light screen insufficient rigidity.

Papiere, die eine für einen Lichtschirm genügende Transparenz aufweisen, ohne geölt zu sein, lassen sich nur durch Behandlung mit Säuren (Pergamentieren) oder durch starkes lLalandrierenerzeugen. Durch diese Verfahren verlieren die Papiere aber ihre Weichheit. Transparente Papiere sind deshalb immer steif. Die Steifheit reicht zur Bildung eines Lampenschirmes aus, ohne besondere Versteifungsmittel benutzen zu müssen. Dagegen ließen sich bisher diese Papiere wegen ihrer zu großen Steifheit nicht einwandfrei über eine gewölbte Form legen, weil sie zu wenig schmiegsam sind, ein zu geringes Saugvermögen (für das Bindemittel) haben und die zwischen. den Schichten auftretenden Luftblasen nicht durchlassen. Damit gearbeitete Schirme wurden, wie Erprobungen zeigten, sehr unschön.Papers that have sufficient transparency for a light screen, without being oiled, can only be achieved by treatment with acids (parchment) or by strong lalandering. Through this procedure, the papers lose but their softness. Transparent papers are therefore always stiff. The stiffness is sufficient to form a lampshade without using special stiffening agents to have to. On the other hand, these papers have so far been unsuccessful because of their excessive rigidity do not lay properly over a curved shape because they are not pliable, have too low a pumping speed (for the binding agent) and those between. the layers occurring air bubbles not let through. Umbrellas made with it were, as tests showed, very ugly.

Durch die vorliegende Erfindung wurde ein Weg gefunden, diese steifen Papierschicht'"x°y, doch verarbeiten zu können und damit schö Lichtschirme zu bilden, die wesentlich bess sind wie früher, vor allem nicht fettig sind und auch nicht vergilben.With the present invention, a way has been found to make these stiff Paper layer '"x ° y, but to be able to process and thus to form beautiful light screens, which are much better than they used to be, and above all are not and are not greasy yellow.

Die Schichten erhalten in an sich bekannter Weise vor der Verarbeitung eine @entsprechend große Zahl von Luftdurchlässen, z. B. kleine Löcher, Schlitze o. dgl., die aber auch während oder nach der Verarbeitung angebracht werden können. Dadurch wird das Bindemittel besser aufgesaugt, die Schichten erweichen schneller, legen sich besser an die Form an, und Luftblasen zwischen den Schichten werden vollkommen vermieden. Das bekannte Verfahren bringt mithin gerade bei dar Lampenschirmherstellung Vorteile mit %i, die sich auf andere Weise nicht erzielen I #gssen.The layers are given in a known manner before processing a correspondingly large number of air passages, eg. B. small holes, slots o. The like., But which can also be attached during or after processing. As a result, the binder is better absorbed, the layers soften faster, adhere better to the mold, and air bubbles between the layers are completely avoided. The known method brings consequently #gssen especially when represents lampshade manufacturing advantages with% i, the not be achieved in other ways I.

Claims (1)

PATENTANSPRUCH: Verfahren, in steifen, aufeinandergelegten, miteinander zu vereinigenden Schichten kleine Luftdurchlässe (Löcher" anzuordnen, dadurch gekennzeichnet, daB die Anwendung bei Schichten erfolgt, die in bekannter Weise zur Herstellung lichtdurchlässiger, aus miteinander vereinigten Schichten bestehender nahtloser Lampenschirme verwendet sind.PATENT CLAIM: Process, in stiff, stacked, with each other layers to be united small air passages (holes "to be arranged, characterized by that it is used in layers that are used in a known manner for production more translucent, seamless, consisting of layers united together Lampshades are used.
DEH150337D 1937-01-23 1937-01-23 Lampshade manufacture Expired DE662017C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH150337D DE662017C (en) 1937-01-23 1937-01-23 Lampshade manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH150337D DE662017C (en) 1937-01-23 1937-01-23 Lampshade manufacture

Publications (1)

Publication Number Publication Date
DE662017C true DE662017C (en) 1938-07-02

Family

ID=7180906

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH150337D Expired DE662017C (en) 1937-01-23 1937-01-23 Lampshade manufacture

Country Status (1)

Country Link
DE (1) DE662017C (en)

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