US2109080A - Furniture frame - Google Patents

Description

Feb. 22; 193s. A BERGMANN 2,109,030

FURNITURE FRAME Filed Sept. 12, 1934 Patented Feb. 22, 193s UNITED STATES- FURNITURE FRAME Adolf Bergmann, Berlin- Charlottenburg, Germany Application September 12, 1934, Serial No. 743,668

In Germanyv September 18, 1933 Claims.

Furniture frames, particularly such as are bent into shape from a single piece of steel tubing, require after the bending a finishing treatment, consisting of polishing and plating, which is all 5 the more diflicult owing to the bulky state of the frame.v

The object of the present invention is to obtain furniture frames of this type whethermade of steel tubing or other material wherein the finishing treatment will not present any particular diiiiculty, and the invention consists in the provision of a frame composed of members each comprising a solid or tubular core and a facing for said core having the form of an enclosing,A exible jacket.

l This arrangement has in the first place the advantage that the core can be made of any suitable cheap material w'lthout regard to the appearance of'the surface thereof, for instance,

rough steel tubing, the necessary finishing treatment, such as nickel or chromium plating being applied to the exible material forming the jacket. The latter may consist of a ilexible pipe or tubing of any well known kind and drawn 4over the core. As an alternative, the jacket may be formed by winding or plaiting thematerial round the core. As a further alternative the jacket may be formed from long or short sleeves or rings which are threaded on the core. The helical or annular members forming the jacket may be of different dimensions, the crevices or grooves between the coarser members being lled in by liner members.

nWhen a iiexible pipe is employed as the jacket,

th'e core may be composed of material which can be injected in plastic condition into the jacket and which will subsequently set hard within the latter. It is also possible to form the core in a separate mold and subsequently cover it withthe jacket.

With th'e foregoing objects in View, several simple and practical embodiments of the invention are illustrated by way of example in the accompanying drawing, in which Fig. 1 represents a perspective-view ofa chair made according to the invention;

Figs. 2 to 5 represent part elevations of dillercnt forms of jackets for the core;

Fig. 6 is a fragmentary, partly sectional view of a frame member provided with a molded core;

Fig. 7 is a section on the line Il-II of Fig. 6, and

Fig. 8 is a sectional view illustrating the molding of the core.`

The chair illustrated in Fig. 1 comprises a frame which is bent into shape from a steel tube c, the latter being subsequently enclosed in a jacket b which is iinished so as to form an appropriate facing for the tube. a is the seat and a' the back of the chair. 5

'I'he jacket may take the form of a flexible metal pipe of any well known kind, being nickel or chromium plated or otherwise nished accorde ing to requirements. y

As an alternative for this arrangement the jacket may be formed by winding about the tube c a wire or the like. Fig. 2 shows such a winding .composed of a wire d of semi-circular cross-section.

In Fig. 3 there is shown a'jacket composed of Celluloid or the like, the surface of which may be provided with any suitable or appropriate design as shown at f.

Fig. 5 shows a sleeve covering-h around` the tube, which pray consist of a plaited or woven wire or strip.

Instead of being bent from a tube or the. like, the core' may be molded from plastic material adapted to set hard as shown in Figs. 6, 7, and 8, in which case the jacket, if in the form of a continuous-pipe, may serve as the mold, it being for this purpose bent .into the desired shape and maintained in this shape until the filling has hardened.

In this manner veryl eilective furniture frames can'be produced.

Compositions which contain hydraulic cement or such as adapted to become rigid by treatment 40 with sulphur, oil or the like, are suitable for mold- Y ing the core, India rubber, plastic wood, artificial resin or similar substances which are plastic while hot and harden ony being cooled, can also be used. i f

' Suitable reinforcements in the form of wires may be employed in the core.

Naturally the core can be made separately and subsequently enclosed inthe jacket. Such a core is illustrated in Figs. 6 to 8. The core is formed in a mold comprising the parts s and r, the upper part being provided with a lling' aperture t. The core material n is molded around reinforcements q provided with barbs or hooks o as shown in Fig. 7. If not non-hygroscopic, the 55 core is rst covered with a Water repelling substance m of rubber or the like, the latter being subsequently faced With Wire gauze l or the like.

Having now particularly described, and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:-

1. A bent furniture frame comprising an ornamental outer exible cover, an inner flexible cover, and an initially plastic core within the inner cover and adapted when set to hold the frame in substantially rigid condition, said inner cover forming a mold for the initially plastic material.

2. A bent furniture frame comprising an ornamental outer ilexible cover, an inner flexible cover, an initially plastic core Within the inner cover and adapted when set to hold the frame in substantially rigid condition, and metal reinforcing members Within said core, said inner cover forming a mold for the initially plastic material.

3. A furniture frame comprising a thermoplastic core adapted when set to be in substantially rigid condition, and an ornamental outer metallic flexible cover covering all of the rigid core Wherever the frame is exposed.

4. A furniture frame comprising a thermo-l plastic core adapted when set to be in substantially rigid condition,l an ornamental outer metallic exible cover covering all of the rigid core wherever the frame is exposed, and metal reinforcing members within said cor'e independent of said core.

5. A rod adapted' to be used in the manufacture of a bent furniture frame consisting of a thermoplastic core adapted when set to be in substantially rigid condition, and an ornamental outer metallic flexible cover covering all of the rigid core wherever the frame is exposed, and strengthening rods within the core.

ADOLF BERGMANN.

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