CA1195840A - Electrical drying rack - Google Patents

Abstract

A b s t r a c t Electrical Drying Rack A known electrical drying rack has side-members (21) with holes (22) in which are received threaded tubes having a jacket and a plastic material coating.
However, the jacket makes the manufacture expensive and the plastic coating is liable to cracking at the action of the heat.
The drying rack of the invention has ordinary cylin-drical metal tubes (11) which are clamped between side-members (21) by means of nuts (24). The metal tubes (11) house an electrical heating wire (31) in the normal way.
The gist of the rack is that the holes (22) of the side-members (21) are surrounded by tube-formed projections (23) on which wider metal tubes (41), for instance of aluminium, are mounted.
The tube-formed projections (23) safeguard against leakage current, should the insulation of the electrical heating wire (31) be damaged.
The rack is mechanically very stable and makes for an excellent air circulation and heat distribution of clothes hanged thereon.

Description

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The invent,ion relates to an electrical drying rack having a pair of electrically insulating side-members with holes in which are clamped a number of metal tubes housing an electrically insulated heating wire.
In known electrical drying racks of this kind the metal tubes have a jacket which by engaging the side-members impart stability to the rack 9 and the metal tubes are coated with plastic material so that the rack is safeguarded against leakage by touch in case of damage of the insulation of the heating wire.
However7 the jacket and the plastic material coating make these racks rather complicated and therefore expensive to manufacture, the electrically insulating plastic coating is liable to rupture due to the actibn of héat leading to loss of the insulation safety and the heat distribution is far from satisfactoryL
The purpose of the present invention is to remedy these deficiencies in known electrical drying racks and this is brought about through the electrical drying rack according to the invention which is characterized by the fact that the holes of the side-members, on the side facing the opposite side-member, are surrounded by tube-formed projections which are in solid connection with the side-members and which two by two carry a wider metal tube surrounding a heating wire-housing metal tube.
It will be seen that the ~acket and the insulating plas-tic coating on the wire-housing metal tubes are eliminated which brings about a simpler and cheaper manufacture. The plastic coating which is liable to rupture is replaced by a substantially imperishable tube and the heat distribution of the tubes is good because they are metallic and have an im-portant diameter in comparison to the holes in the side-members. The electrical insulation of the wire-housing metal tubes is brought abou-t by the tube-formed projections which prevent leakage current in case of damage of the electrical insulation of the heating wire and the wider metal tubes surrounding the tube-formed projections make for an excellent stability of the drying rack.

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, The invention will be ~urther illustrated below in con-nection with the dr~wing in which fig. 1 sho~s part of a known electrical drying rack in section and fig. 2 presented in the same way, part of an embodiment of the electrical drying ra~k according to the invention.
The known electrical drying rack according to fig. 1 has side-members 21 (only part of a single side-member is shown) with holes 220 Clamped in the holes by means 9f nuts 24 arethr~edtubes 11~ having a jacke-t 12' and a plastic coating 13'.
In the tube 11' extends an insulated electrical heating wire 31. I this wire should lose its~insula$ion by damage the plastic coating 13' on the tube 11' safeguards a risk-free contact with the rack.
The electrical drying rack according to the invention shown in fig. 2 has:in the same way as the rack of fig. 1 a pair of side-members 21 with holes 22. Through the holes passthre~edtubes 11, clamped by means of nuts 241 and in the tubes 11 is an electrical heating wire 31.
The tubes 11 differ from the tubes 11' by not having jacket and plastic coating but have otherwise the same diameter.
The holes 22 of -the side-members 21 are surrounded by tube-formed projections 23 which are in solid connection with the side-members. These projections are surrounded by wider metal tubes 419 w~ich are typically present in a number of five, each tube extending between a pair of tube-~ormed projections 23 facing each other. The metal tubes 41 may be made of electrically oxidized aluminium. The tubes 41 endow the rack with mechanical stability and are substantially imperishable. The tube-formed projections 2 safeguard against leakage current and leakage voltage. In case of damage of the electrical insulation of the electrical heating wire 31 the metal tubes 41 will still be risk-free to touch.
At the outside of the side-member in both sides of the rack is an insulating wall not shown.

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~ he rack according to the invention is simple to manu-facture and brings'about a good heat distribution and air circulation and~clothes which are hanged thereon for drying will not easily slip. - .
A rack according to the invention having five tubes of 60 cm each a~d having a consumption of 70 W can be manu-factured without a cost-increasing thermostat~

Claims

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. Electrical drying rack having a pair of electrically insulating side-members (21) with holes (22) in which are clamped a number of metal tubes (11) housing an electrically insulated heating wire (31), characterized by the fact that the holes (22) of the side-members (21), on their side facing the opposite side-members (21) are surrounded by tube-formed projections (23) which are in solid connection with the side-members (21), each opposing pair of projections (23) carrying a wider metal tube (41) which surrounds a wire-housing metal tube (11).