US1740957A - Cover for reflectors - Google Patents

Description

Dec. 24, 1929. -P. D. PHILLIPS 1,740,957

COVER FOR REFLECTQRS Filed March 1, 1928 Patented Dec. 24, 1929 UNITED STATES PATENT OFFICE PAUL D. PHILLIPS, OF CHICAGO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTRIC MANU- FACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS COVER FOR REFLECTORS Application filed March 1,

My invention relates to covers for refiectors.

In certain situations it is desirable that a glass cover be secured across the opening in a reflector in order to keep dust and other foreign material away from the parts within the reflector.

One of the objects of my invention is to provide improved means whereby the glass cover may be readily attached and detached with respect to the reflector.

Further objects will appear from the description and claims.

In the drawings in which an embodiment 5 of my invention is shown, Figure l is a perspective View showing my improved means for holding the glass cover on the reflector; Fig. 2 is a bottom view of the tightening device for the retaining band showing the band in contracted position;

Fig. 3 is a view similar to Fig. 2 showing the band in expanded position; and Fig. 4 is a section on the line H of Fig. 1. Reflectors of the type contemplated in this invention are often secured adjacent the ceiling of a room so that the removal and replacement of the glass cover has to be done' while standing on a ladder, which makes it desirable that this operation be as simple as possible.

. In my construction this is accomplished by providing a clamping band 1 which embraces the adjacent edges of the glass cover 2 and reflector 3 and which can be readily contracted and expanded and which will remain on the glass cover when the glass cover is removed from the reflector.

. Referring to the drawings in detail, the construction shown therein comprises a refleet-or 3, a glass cover 2 therefor, an expansihir and contractible band 1 embracing adedges of the cover and reflector and means for holding the band either in contracted or expanded position. The band is of channel form in cross-section as shown in Fig. 4 and embraces the lower beaded edge 4 of the reflector and theehannel felt cushioning ring 5 which receives the edge of the glass cover.

50 The means for holding the band in either 1928. Serial No. 258,195.

rounds a guide 10 in the form of a sheet metal stamping riveted at both ends to the clamping band 1. This guide strip is formed to provide an outwardly extending abutment 11 against which one end of the spring bears.

The link 8 connecting the lever with the spring may be formed of wire bent to provide a loop portion 12 surrounding the guide 10 and having its ends pivotally connected with the lever at 9. This lever may be in the form of a sheet metal stamping curved so as to conform to the contour of the clamping band 1 when the band is in contracted position, as shown in Fig. 1, whereby smooth constructlon is obtained. The lever may have a hole 13 stamped therein through which a looped securing strap 14 is inserted to provide a pivotal mounting for the lever, this loop being riveted to one end of the clamping band. In order to hold the clamping band in expanded position as shown in F 3 the end 15 of the guide strap 10 is so shaped and positioned as to cooperate with the end 16 of the lever to act as a sort of frictional latch to hold this lever in the position shown in Fig. 3, thus holding the clamping band in expanded position. This lever acts to hold the ends of the band far enough apart so that the attendant can take hold of the complete cover at a point diametrically opposite the glass with one hand and with the other hand over the glass can pull the holder oil without any danger of dropping it. If it were necessary for the attendant to spring the ends of the band apart while standing on the ladder, both hands would he required to do this and as some of those covers are ({uitc large, perhaps 18 in diameter, there wou d be great danger of the cover coming loose quickly and, because of its weight,

twisting itself out of the hands of the attendant. The construction is such that the clamping band remains in position on the edge of the glass cover when the cover and band are removed from the reflector so that the band and glass cover remain assembled with respect to eachother when removed. from the reflector. This greatly facilitates the removal and replacement of the cover with respect to the reflector.

While I have described but one embodiment of my invention, it is obvious that many modifications therein may occur to those skilled in the art, and I desire, therefore, that my invention be limited only by the scope of the appended claims and by the prior art.

I claim:

1. Means for securing a cover to a shade comprising an expansible and contractible band of still construction embracing adjacent edges of the coverand shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a guide mounted on the other end of said band and extending circumferentially thereof, and having both ends secured to said stifi' band, a coil compression spring surrounding said guide, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position.

2. Means for securing a cover to a shade comprising an expansible and contractible band of stiff construction embracing adj acent' edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a guide mounted on the other end of said band and extending circumferentially thereof, and having both ends secured to said still band, a coil compression spring surrounding said guidc, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, said guide being in the form of a strip secured to said band and having an abutment portion against which one end of said spring bears.

3. Means for securing a cover to a shade comprising an expansible and contractible band embracing adjacent edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a guide mounted on the other end of said band and extending circumferentially thereof, a coil compression 4 spring surrounding said guide, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, said link being formed of wire and having a loop portion surrounding said guide and bearing on said spring said link having its ends pivotally connected with said lever.

4. Means for securin a cover to a shade comprising an expansible and contractible band embracing adjacent edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a spring mounted on the other end of said band, and a link pivotally connected with said lever and conuectingsaid lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, and means for holding said band in expanded position when the lever is. moved to expand the band.

5. Means for securing a cover to a shade comprising an expansible and contractible band embracing adjacent edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a spring mounted on the other end of said band, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, and means for holding said band in expanded position when the lever is moved to expand the band comprising an abutment engaged by said lever.

6. Means for securing a cover to a shade comprising an expansible and contractible band embracing adjacent edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a guide mounted on the other end of said band and extending circumferentially thereof, a

guide, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, and means for holding said band-in expanded position when the lever is moved to expand the band.

7. Means for securing a cover to a shade comprising an expansible and contractible band embracing adjacent edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a guide mounted on the other end of said band and extending circumferentially thereof, a coil compression spring surrounding said guide, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to a swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, and means for holding said band in expanded position when the lever is moved to expand the band comprising an abutment engaged by said lever.

8. Means for securing a cover to a shade comprising an expansible and contractible band embracing adjacent edges of the cover and shade, and means for contracting said band about said edges comprising a lever pivotally mounted on one end of said band, a guide mounted on the other end of said band and extending circumferentially thereof, a coil compression spring surrounding said guide, and a link pivotally connected with said lever and connecting said lever with said spring, said lever being movable to swing the pivotal link connection past the dead-center whereby the spring will hold the band in contracted position, and means for holding said band in expanded position when the lever is moved to expand the band, comprising an abutment engaged by said lever, said guide and abutment being formed as parts of an integral strip.

In witness whereof, I have hereunto subscribed my name.

PAUL D. PHILLIPS.

Images