US2522230A

US2522230A - Knockdown reflector construction

Info

Publication number: US2522230A
Application number: US765975A
Authority: US
Inventors: Wayne A Komulaine
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-08-04
Filing date: 1947-08-04
Publication date: 1950-09-12
Anticipated expiration: 1967-09-12

Description

Sept. 12, 1950 w. A. KOMULAINE 2,522,230

mocxnowu REFLECTOR CONSTRUCTIQN Filed Aug. 4, 1947 2 Sheets$heet l [I II a iiHlmL ,0 5E1!!!" 4 wmiilI INVENTQR.

QTTOBNEV Sept. 12, 1950 w. A. KOMULAINE 2,522,230

KNOCKDOWN REFLECTOR CONSTRUCTION Filed Aug. 4, v1947 2 Sheets-Sheet 2 IN V EN 7 '0R.

107' 7' GENE V Patented Sept. 12, 1950 .UNITED STATES PATENT Q'FFICE 2,522,230 KNOCKDOWN REFLECTOR CONSTRUCTION Wayne A. Komulaine, Los Angeles, Calif. Application August 4, 1947, Serial N 0. 765,975

This invention relates to reflectors for use with incandescent electric lamps; more particularly it relates to such reflectors of knock down construction.

It is an object of this invention to provide an improved reflector of this type.

It is another object of this invention to provide such a reflector adapted to be formed in an economical manner of low cost materials.

It is another object of this invention to pro vide a reflector employing sheet material in a novel manner.

It is another object of this invention to provide a knockdown reflector which may be assembled and disassembled in a simple manner, the component parts occupying a greatly reduced space when disassembled.

It is another object of this invention to provide a knock down reflector formed of sheet material, such material being adapted for disposal in folded stacked relation when the reflector is disassembled.

This invention possesses many other advantages and has other objects which may be made more easily. apparent from a consideration of one embodiment of the invention. For this purpose there is shown a form in the drawings accompanying and forming part of the present specification. This form will now be described in detail, illustrating the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense since the scope of the invention rangement of a plurality of reflectors;

Figure 3 is a cross section taken substantially as indicated by line 3-3 of Figure 2;

Figure 4 is a detail elevation partly in section, showing the corner construction of the reflector;

Figure 5 is a cross section. taken substantially as indicated by line 5-5 of Figure 4;

Figure 6 is a development of the reflector ele' ments, and illustrating an initial step in. the assembly thereof;

Figure '7 is a detail section taken substantially as indicated by line l--'! of Figure 6;

Figure 8 is an end view of one of the reflector elements in disassembled relation; and

Figure 9 is a fragmentary cross section on an 12 Claims. (Cl. 24036) enlarged scale, taken substantially as indicated by line 9-9 of Figure 6.

As shown in Figures 1, 2, 3 and 6, the reflector is formed of pieces A, B and C of resilient sheet material appropriately cut so that when assembled they form an open front structure having pairs of diverging walls I and 2, and 3 and 4, a conventional socket 5 being secured in the back of the structure for mounting an incandescent lamp 6. The ends of the walls l and 2, as shown in Figures 1 and 2, may serve optionally to provide a flat base on which the reflector rests with the open front extending perpendicularly thereto, or the reflector may rest on the external curved surface provided by either of these walls, and secured as by suitable blocking or other means, not shown, with the open front at a desired inclination.

The material of which the pieces A, B and C are formed should be sufiiciently flexible to be readily bent as required for assembly, at the same time having sufficient resilience to resume substantially its initial flat condition upon disassembly. Thus, the reflector when disassembled requires only a small space. For example, cardboard of a suitable weight may be employed, the reflecting surface being formed by a layer of aluminum paint. Optionally, a plastic or a light gauge sheet metal may be employed.

As shown in Figure 6, the piece A comprises a rectangular sheet having a stiffening member l0 ably secured thereon. A central aperture II is formed in the sheet for accommodating the socket-5. Equally spaced on opposite sides of the member It, and parallel therewith, are slots or cuts 52 and 13 of restricted length and extending centrally through the sheet A.

The pieces B and C are substantially identical, each having a straight outer edge l6 adapted to connect the corresponding corners of the edges ill and [5 of the piece A when the pieces A, B and C are bent, to maintain the pieces in assembled-relation. The opposite side edges I1 and I8 converge equally from the outer edge It and have a configuration such that they engage the surface of the sheet A when assembled.

The pieces B and C each have a rectangular extension l9 opposite the edge i6, joined to the piece by a reduced neck 28 having a width substantially equal to the spacing of the slots l2 and I3 and which defines tongues I fi--a and l9-b on the opposite sides of the extension 19. These tongues i9c and i9b are adapted to enter respectively the slots i2 and 43 or vice Versa, and

3 when so placed, the neck 2i! cooperates with the slots to position the piece B or C properly with respect to the sheet A. Sheets B and C each have an aperture 2| adapted to align with aperture H for accommodating the socket 5 when the sheets are assembled.

In assembling the reflector, one of the pieces B or C, for example sheet B, is laid on the rib l and sheet A in an inclined position, as shown by the broken lines, Fig. 6, and one edge of the extension I9 is inserted in the slot 12. The piece is then straightened to the full line position so that the opposite edge of the extension Ill enters the other slot [3. At this time, the sheet A may be flexed upwardly about the member Ill and the sheet B flexed downwardly as shown in Figure 7. The other piece C is inserted in a similar manner.

As previously mentioned, the slots l2 and i3 cooperate with the necks 20 to position the pieces B and C lengthwise of the piece A. Furthermore, these slots I2 and I3 are so arranged and located that by the engagement of their ends with the tongues l9a and l9-'b, they limit outward movement of the extensions I9 due to the force exerted by bending the sheets B and C in assembling the reflector, maintaining the sheets properly positioned.

After placement of the extensions 19 in the slots [2 and I3, the pieces A, B and Care bent to bring their adjacent corners together; that is, referring to Figure 6, the pieceA would be bent about the rib ii) to bring the edges [5 and i5 upwardly from the plane of the paper. Similarly pieces B and C each would be bent along the neck m to bring theedges l6 upwardly'from the plane of the paper. The adjoining corners are then secured together, maintaining the reflector assembled. V

For this

purpose members

24,2 5and'26' are provided respectively along the edges I 1, l5 and it (see particularly Figs. 4 and 5) which members each have a tubular portion 21 defining a space or channel anda pair of spaced

parallel legs

28 and 29 between which the edge-of the associated sheet A, B or C is securedas by a stamping operation forming spaced indentations 30 which clamp the sheet against the other leg.

A pair of the members which are oppositely disposed, for example members 25, each rotatably accommodate a rod 3 l having right angle extensions 32 at each end adapted for insertion in the tubular portion 2l of the

adjoining members

24 and 25. The rotatable mounting of the rods 3| facilitates the insertion and removal of such extensions 32.

The lamp socket 5 is entirely conventional, having a cylindricalibody externally threaded on its inner end'5a and having an intermediate annular shoulder 5b.

The socket 5 is inserted through the apertures II and 2|, and is secured by a nut Mthreaded on its inner end, clamping the extensions I9 against the stiffener I8 and sheet A, and sheet A in turn against the shoulder. Thus, the member ID, in addition to stiffening the sheet A, serves asa spacer which maintains the extensions E9 of sheets B and C spaced from sheet A, so that the apertures i l and 2| engage the socket 5 at spaced points and support itadequately;

Whenit is desiredto disassemble the reflector, the socket 5 and'lamp 5 are removed and the corners of the sheets A, B and C are disconnected. This will allow the sheets to be substantially flattened and the extensions l9 to be removed from the slots l2 and I3.

To allow sheet A to be folded so as to be of reduced size and substantially flat, the stiffener i0 is of novel form, see particularly Figure 9. Thus a strip of suitable material, for example the same material as that of the sheets A, B and C, is folded along a medial line to provide a pair of diverging

legs

35 and 36, the end portions of which are bent outwardly and secured to sheet A by a suitable adhesive. The spacing of the attached portions of the legs permits the sheet A to occupy any position between an open flat position .or a folded position about the stiffener, as shown in Figure 8.

The stiffening member 19 may be used, if desired, forattaching the reflector to a mounting means. Thus in Figure 2, a second reflector indicated b the letter D is shown as supported on the previously described reflector comprising the members A, B and C.

For maintaining the reflector D against lateral displacement, a wood'or metal pin P of suitable size is mounted in the member ID of the lower reflector and provides a projection adapted to engage the corresponding member l0-a in the upper reflector D. The upper reflector merely rests on the lower reflector and may be removed at will.

I claim:

1. A reflector structure comprising, means forming a pair of diverging reflecting surfaces having as elements, parallel right lines, a pair of members providing reflecting. surfaces diverging transversely of the first mentioned surfaces, said members being confined between said first mentioned surfaces, means securing the outer ends of said members and said surface forming means together, and means including. overlapping portions respectivelyat the inner ends'of said members securing said inner ends'to saidsurface forming means at points spaced on opposite sides of the medial element thereof.

2. A reflector structure comprising, means forming a pair of diverging reflecting surfaces having as elements parallel right lines, a stiffening rib secured to said means along the medial element of said surfaces, a pair ofmembers providing reflecting surfaces diverging transversely of the first mentioned surfaces, and having as elements parallel right lines extending perpendicularly with respect to the lines of said first mentioned surfaces, each member of said pair having an extension overlying said rib, and means securing said extensions to said surface forming means on opposite sides of said rib.

3. A reflector structure comprising, means forming a pair of diverging reflecting surfaces having as elements paralle'lright lines, a stiffening rib secured to said means along the medial element of said surfaces, a pair of membersproviding reflecting surfaces'diverging transversely of the first mentioned surfaces, and having as elements parallel right lines extending perpendicularly with respect to the lines of said first mentioned surfaces, each member of said pair having an extension overlying said rib, there being slots respectively on opposite sides of said rib through said surface forming means forreceiving the edge portions of said extension and securing said extensions to said surface forming means.

4. A reflector structure comprising, means forming a pair of diverging reflecting surfaces having as elements parallel right lines, a tiffening rib secured to said means along the medial element of said surfaces, a pair of members providing reflecting surfaces diverging transversely of the first mentioned surfaces, and having as elements parallel right lines extending perpendicularly with respect to the lines of said first mentioned surfaces, each member of said pair having an extension overlying said rib, and means securing said extensions to said surface forming means on opposite sides of said rib, there being aligned apertures through said extensions and said surface forming means for mounting a lamp socket.

5. A reflector structure comprising, means forming a pair of diverging reflecting surfaces having as elements parallel right lines, a stiffening rib secured to said means along the medial element of said surfaces, a pair of members providing reflecting surfaces diverging transversely of the first mentioned surfaces, and having as elements parallel right lines extending perpendicularly with respect to the lines of said first mentioned surfaces, each member of said pair having an extension overlying said rib, and joined to the respective member by a reduced neck, there being slots respectively on opposite sides of said rib through said surface forming means and spaced by a distance substantially equal to the versely of the first mentioned surface, each of said members having edges curved to conform with the surface of said sheet, an inwardly directed stiffening rib secured along the medial line of said surface, there being slots through said sheet of limited length on opposite sides of said rib and parallel therewith, each of said members having a plane extension adapted to overlie said rib and engage said slots for securing the inner ends of said members in spaced relation to the central portion of said sheet, and means securing the outer corners of said members to the adjacent corners of said sheet.

10. A knockdown reflector comprising a rectangular sheet foldable along a medial line and adapted to provide opposed flaring reflecting surfaces, a pair of members adapted to provide opposed reflecting surfaces, flaring transversely of the first mentioned surfaces, a stiffening element extendingalong said medial line comprising a pair of legs straddling said line and secured to said sheet, said legs extending inwardly from said sheet and being joined in foldable relation along a line in spaced parallelism with said medial line, and means securing the inner ends of said members against said element.

width of said neck, for receiving the edge portions of said extensions and securing said extensions to said surface forming means, said slots being solocated and of such extent as to locate said members in proper position in said surface forming means.-- I

6. A reflector comprising a rectangular sheet formed to provide a concave surface, a pair of members each formed to provide a concave surface adapted to extend substantially from the center of said sheet to an edge thereof transversely of the first mentioned surface, each of said members having edges curved to conform with the surface of said sheet, and means securing said members and said sheet in assembled relation.

7. A reflector comprising a rectangular sheet formed to provide a concave surface, a pair of members each formed to provide a concave surface adapted to extend substantially from the center of said sheet to an edge thereof transversely of the first mentioned surface, each of said members having edges curved to conform with the surface of said sheet, means securing the inner end of each of said members to the central portion of said sheet and means securing the outer corners of said members to the adjacent corners of said sheet.

8. A reflector comprising a rectangular sheet formed to provide a concave surface, a pair of members each formed to provide a concave surface adapted to extend substantially from the center of said sheet to an edge thereof, each of said members having edges curved to conform with the surface of said sheet, means securing said members and said sheet in assembled relation, and means providing a restricted opening extending along the medial element of the first mentioned surface from one edge thereof to accommodate mounting means for the reflector.

9. A reflector comprising a rectangular sheet formed to provide a concave surface, a pair of members each formed to provide a concave surface adapted to extend substantially from the center of said sheet to an edge thereof trans- 11. A reflector structure comprising: means forming a pair of diverging reflecting surfaces having as elements, parallel right lines; a pair of members providing reflecting surfaces diverging transversely of the first mentioned surfaces, extending therebetween and having as elements parallel right lines; means securing the inner ends of said members to said surface forming means; and fastening means securing the outer edges of said members to the outer edges of said surface forming means, comprising a member rotatably mounted on one of said edges and having an angled extension adjacent one end thereof, and an opening adjacent the abutting end of another edge engaging said extension.

12. A reflector structure comprising: means forming a pair of diverging reflecting surfaces having as elements, parallel right lines; a pair of members providing reflecting surfaces diverging transversely of the first mentioned surfaces, extending therebetween and having as elements parallel right lines; means securing the inner ends of said members to said surface forming means; and means forming a channel along the outer edges of said members as well as of said surface forming means; a pair of rotatable members disposed respectively in a pair of said channels on opposite edges and having an angled extension adjacent each end of said edge, respectively insertible in the adjacent ends of the other pair of channels.

WAYNE A. KOMULAINE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 922,958 Ryan May 25, 1909 1,034,077 Carlstedt July 30, 1912 1,059,371 Kelley Apr. 22, 1918 1,651,640 Spencer Dec. 6, 1927 1,677,602 Spieth July 17, 1928 1,987,705 Pedersen Jan. 15, 1935 2,242,525 Kirlin May 20, 1941 2,261,187 Scribner Nov. 4, 1941