US1477991A

US1477991A - Lamp shade

Info

Publication number: US1477991A
Application number: US558270A
Authority: US
Inventors: Baker Stanley Henry
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-05-03
Filing date: 1922-05-03
Publication date: 1923-12-18
Anticipated expiration: 1940-12-18

Description

Dec. 38,1923. 1,477,991

S. H. BAKER LAMP SHADE Filed May 3, 1922 2 sheets-sheet 1 Dec. 18, 1923.

S. H. BAKER LAMP SHADE Filed May 3 1.922

2 Sheets-Sheet 2 Patented i8, 1%23.

STANLEY I-U 'N'RY BAKER OF '[VTANCWWFZTER LAMP Application filed May 3,

To all whom it may concern Be it known that STAN n1 HENRY BAKER, a subje -t of the King of Great Britain and Ireland, residing at Manchester, England,

has invented new and useful Improvements in Lamp Shades, of which the follow ling is a specification.

This invention relates to shades as used on lamps and the like and refers in particular to such shades made of paper or thin cardboard cut or shaped in the flat and subsequently folded to form a truncated cone or the like with overlapping edges fastened together. Usually an ornamented pattern or announcement is painted or printed on the blank. The present invention has for its object to simplify and improve the construction of such shades and the method of securing the same in position.

According to the invention the completed shade which may be of circular or non-circular i. e., square, triangular, etc, shape in cross section is cut in the form of a sector ot -a circle or with the bottom or top and bottom shaped to give the desired appearance and with the ends of the segments shaped to interlock. This can be conveniently eiiected by tabs on one end adapted to enter slots in the other end. Said tabs may be shaped to lock in the slots or may be parallel-sided adapted to enter and be turned over or be gummed to secure it in position. The blanks can have an ornamental pattern and or wording printed or otherwise formed thereon, either before or after being cut out [and in practice the inter-engaging tabs and slots ensure that when the flat blank is folded up to form the shade the meeting ends of the pattern are automatically brought into register.

A cardboard or like collar is provided, the perimeter oi which is shaped to agree substantially with the cross-sectional shape of the shade and adapted in the case of electric lamps to fit over the neck of the lamp and rest upon the bulb and the shape and proportions of the blank are such that when folded into the operative position the shade seats itself upon the collar along a line below the top, which extends above the lamp and in line with the lamp holder, the opening in the top being a fit for said holder. The arrangement is such that the shade is positioned vertically at two points along its length so that it is retained concentric ENG-LAND.

SHADE.

1922. Serial mfssaaro.

with the lamp and is prevented from tilting or oscillating relatively thereto.

The invention will be more particularly described by the aid of the accompanying drawings, in which:

Fig. 1 is a plan view of a blank for producing a round shade.

Fig. 2 is a plan view or" the blank folded ready for use.

Fig. 3 is a plan of the disc or gallery for applying to the neck of the lamp.

Fig. 4. is a sectional elevation showing the invention applied to an electric lamp.

Figs. 5 and 6 show two modified forms of 7 discs or galleries.

Figs. 7, 8 and 9 are views corresponding to Figs. 1, 2 and 3 respectively showing the construction of a square shade, whilst Figs. 10, 11 and 12 are corresponding views showing a pentagonal construction.

Fig. 13 is a plan view of a disc or gallery adapted for a triangular shade.

In carryin the invention into ellect according to one convenient manner and as adapted for producing a round lamp shade a blank a is cut or formed to the shape of a sector of a circle, one end of which is provided with projecting tabs Z2, say three on the edges, which are parallel along the edges, but which may be pointed or have the corners rounded to facilitate the insertion into complemental slits 0 formed along the other and near the edge. Preterabl' the top edge of each tab Z) is cut on a slope to form a point 6 at one end as shown in the drawings.

The proportions of the blank (4 are such that when folded into the conical shape of the shade the opening 0 at the top is approximately equal to the diameter of the standard lamp holder say 11: inches from which it tapers to the bottom, the taper being such that when the top is in line with the lamp holder, see Fig. 4, the diameter of the shade (a at that part normally in line with the shoulder 01 the lamp d is slightly larger than the diameter of said shoulder.

A. cardboard or like collar or disc 0 having a circular hole formed in the centre is provided with diametrically opposite slots g to allow of its being threaded over the lamp top. The perimeter agrees in size and shape (circular in the present instance) to the cross-sectional shape of the shade a at a point along its length such that when said shade rests upon the collar or disc c it is supported with the top edge in line with the lamp holder, such point being approximately 1;}: inches from the top of the shade for lamp fittings of standard size. The arrangement being such that the shade does not contact with the lamp thereby preventing any liability for the shade to catch fire.

An ornamental or other pattern is printed on the blank either before or after being shaped and when the blank has been folded up and the tabs Z) placed in the slots 0, the tabs are folded over to secure the shade in the conical shape before being placed on the disc.

The tabs 6 may if desired, be gummed or otherwise positively secured in position and instead of plain tabs, self-locking tabs may be used i. e., tabs which are smaller at the root than at the top so that when sprung into position the top will expand and lock into the slits.

as shown in Fig. 5 the collar or disc I; may be shaped on its perimeter so that it will support the shade and retain its true shape but will only engage the same at points around its perimeter, so as to provide ventilating passages h, or alternatively said disc 6 may be perforated with holes it, see Fig. 6, with the same object in view, though in practice it is thought the slots formed to allow the disc to pass the projecting pins on the lamp will provide etiicient ventilation.

In Fig. 7 is shown a blank a, which, in addition to being formed with, tabs b and slits c is scored along the lines 2' so that it may be folded into a square shape for use as seen in Fig. 8. In this case the disc 6 is made to a square shape in use as clearly seen in Fig. 9.

Figs. 10, 11 and 12 show a blank-scored at 2' and folded into a pentagonal shape and having a pentagonal disc, while Fig. i i shows in plan a triangular disc 6 such as would be necessary if the blank a was scored to form ashade of triangular shape in plan.

The improved shades may be formed of any suitable material, such as mill-board,

card-board, textile fabrics and thin sheet metal, such as tin or aluminium and if desired the top edge of the shade may be suitably slit so as to be capable of expanding slightly when placed in position so as to springwise engage the lamp holder or allow 4 for slightvariation in the size of the lamp holder. 7

Shades so produced may be sent out in the flat form thus enabling the retailer to hold a large stock in a very limited space but. can be readily folded up with the ends of the pattern in correct re ister, the disc being simply placed over tie top of the lamp and the lamp shade placed thereon when the whole is ready for applying to the lamp holder the shade being'automa tically aligned.

What I claim is r 1,. Shades for use on lamps and the like, comprising a blank adapted to be folded to form a downwardly flared shade with an opening at the top, of substantially the same diameter as the lamp holder, tabs at one edge of said blank and complemental slits near the other edge of the blank, a disc within the shade at a distance below the top of the same, said disc being perforated to fit over the neck of a lamp and said perforation being formed with diametrically opposite slots to accommodate the lamp pegs, substantially as described. 7

2. Shades for use in lamps and the like, comprising a blank adapted to be folded to form a downwardly flared shade with an opening at the top, of substantially the same diameter as the lamp holder, tabs at one edge of said blank and complemental slits near the other edge of the blank, a

disc within the shade at a distance below the top of the same, said disc being perforated to fit over the neck of a lamp and said perforation being formed with diametrically opposite slots to accommodate the lamp pegs, provision being. made for th escape of hot air through or past the disc, substan-' tially as described.

In testimony whereof I have signed my name to this specification.

STANLEY HENRY BAKER.