US 1652477 A
Description (OCR text may contain errors)
Dec. 13, 1927.
L HALL 1,652,477
Marh l5. 1926 jwefcop Patented nec. is, i927.
narran sraas whlt?? PATENT FFQF..
LEE HALL, OF CHICAGO, ILLINOIS, ASSGNOR TO FEDERAL ELECTRIC COMPANY, INC.,
K OF CHICAGO, ILLNOIS, A CORPORATION OF NEVI YORK.
Application filed March 13, 1926. Serial No. 94,398.
This invention relates to improvements in signs and consists of the matters hereinafter described and more particularly pointed out in the appended claims.
The invention relates to signs containing glass letter plates, which are attached against a sheet metal face having the letter cut out or stenciled therein, so that the form of the letter is blocked out on the glass letter plate by the said metal face in a familiar manner. Diilculty has been had in providing efficient holding means for securing the glass plates to the metal face of the sign plate. The holding means must be such as to securely attach the letter plate in position, but at the same time, the attachment must not be so rigid that there will be a tendency to break the glass plate under the shocks and jars encountered when the signs arein transit and before erection. In addition, said holding means should be such that the glass letter plate may be easily and quickly applied'to the metal sign plate or removed, when removal is required for change or renewal.
The object of my invention is to provide al holding means whichV will fully meet the above requirements and which at the same time is of cheap and economical construction. Another obi ect of the invention is to produce a holding means free of rivets or bolt heads, so that it may not interfere with the ready and easy cleaning of the inside of the sign body. and will make possible a neat and I sightly appearance on the interior of the sign body.
The lseveral advantages of the invention will appear more fully as I proceed with my speciiication.
In the drawings Figure 1 is a fragmentary view of a sign body of the kind showing the metal plate in which the stencil outline of the letter-is cut out with the glass letter plate which is attached to the back of said metal plate and forms the body of the letter.
Figure 2 is a View representing a vertical section through Figure 1 in a plane indicated A n by the line 2-2 thereof.
Figure 3 is a view on an enlarged scale representing a fragmentary rear view of the parts shown in Figure 1.
Figure i is a view representing a partial p horizontal section through Figure 8 in a plane indicated'by the line 4-4C of Figure 3.
Figure 5 is a fragmentary perspective view of the holding means.
Referring now to that embodiment of the invention illustrated in the drawings 10 indicates a plate preferably made of sheet steel, which forms one face of the sign body and in which are out the stencil openings defining the lettersin this case, the letter F, which are to appear on the sign. 11 indicates a glass letter plate which is attached to the back of the metal plate 10, in position to cover the stencil opening therein. so that it will provide the body 12 of the sign letter. The glass letter plate 11 may be of any familiar type and is generally of opal or similar glass. It may be flat or may have the letter raised thereon, as desired.
13, 13 indicate the holding means or devices at the top and bottom of the letter plate, by means of which it is held against the metal sign plate 10. Said holding means consist of the following :*1a indicates a corrugated metal strip which is attached to the rear face of the metal plate 10 in a position somewhat spaced from the edge of the glass letter plate 11 and extending parallel to said edge. Said strip la is corrugated transversely so as t0 provide on the face adjacent the plate 10, in alternate arrangement, flat, vertically extending ribs 15, 15 and intermediate channels 16, 16 (see Figure 4). The strip is attached to the rear face of the inetalplate 10, preferably by spot-welding the ribs 15 to said plate. When secured to the plate in this way, there are provided by the means of the channels 16, a plurality of vertically extending parallel slots 16a, 16ZL between the strip 14 and the rear face of the metal plate 10.
17 indicates a clip adapted to be engaged in the slots 16, between the strip land the back of the metal plate 10 with its upper end engaged against the marginal edge of the glass letter plate in such manner as to hold the glass plate against the sheet metal plate 10. Said clip is preferably made of brass or like elastic or springy material and is formed in such a manner that it may be stamped or cut from a sheet of metal in quantities. The body of the clip is cut to provide laterally spaced prongs 18, 18, with a tongue 19 intermediate said prongs. The
said parts may be provided by simply severing the metal along the lines dehning said prongs and tongue.
The prongs 18, 1S are spaced apart a distance adapting them to straddle a rib 15 oi? the strip 14, so that they may be inserted in the slots 1G, 1G,`at either side ot said rib. The tongue 19 will then engage bach of the rib 1.5. Said tongue 19 is termed near its bottom to provide an inturned horizontal shoulder 20 and an outturned finger hold 21. Since the clip is made oic spring metal, when itis applied as described, with the prongs 18, 18 straddling a rib 15 ot the strip 14 and with the tongue 19 engaged back et said rib, the shoulder 520 will engage below the bottom edge of the rib 15 oi'i the strip v14 and thus lock the clip against withdrawal i'rom the strip 14.
The upper end ofthe clip 17 is preferably formed to provide. an oit-set part 22 iior engagement with the rear margin ot the letter plate, anda linger hold 23 at an angle to the part 22, to be grasped by inserting one thumb or finger back oir the glass plate. The part 22, which engages the back of the glass plate, being offset from the body o't the clip 17, a more 'or less delin'ed transverse shoulder 23, is formed for supporting engagement with the proximate edge ot the glass letter plate.
The operation of the clip will be manifest from the foregoing description and from an examination of the drawings. The strips or rails 14 are attached to the back of the metal plate 10 above and below, and if de'- sired, at the sides ot the space to be occupied by the glass letter plate, being spaced from the edges of said plate a suliicient distance to permit the `use oit the clips 17.
VSince the hold provided by the clip is yielding, as above described, any jars to the signv body as when the sign. is in transit, tending to separate the `glass letter plate from the metal plate 10, will be taken up and con'ipensated tor by the elasticity o't the clip 17, without any danger of breaking the glass plate, as where rigid, unyielding devices are used, as has been the practice heretofore.
In the case of raised glass letter plates, the convex body of the letters project through the stencil openings in the platev 10, and at the marginal edges ot the stencil letter openings in the metal plate hold the glass letter plate against vertical or lateral movement, so it is only necessary to hold the glass letter plate in such case in close contact with the back of the plate 10, No particular assistance is therefore required from the clip 17 to prevent lateral or vertical movement of such glass let-ter plate. But in the case of flat glass letter plates, where there are no projections on the glass through the stencil openings 'in the plate 10, the clips 17 by means of the shoulders 23 provide the necessary stops against lateral and vertical movement ot the plate, in addition to the frictional resista-nce to such movement brought about by the clamping action of the clips against the glass letter plate.
The glass letter plate is then brought to the position on the plate 10 which it is in tended to occupy and a number of clips 17 are engaged with the rails 14 in the manner heretofore described, with the glass engaging part 22 of the clip 17 engaged upon the rear margin et the glass plate and with the shoulder engaging the edge of said plate. Since the clips 17 are made ot elastic metal the clips will provide a` yielding but quite close engagement of the glass plate against the metal plate, which will hold them in the desired or intended relation. A suli'icient number of clips 17 are used to maintain the contact et the letter plate and metal plate throughout.
The many advantages of my invent-ion will be manifest to those familar with the art.
I claim as my invention 1. In a sign, in combination with a metal stencil plate, a glass letter plate associated therewith, and means for holding said plate to said metal plate comprising a rail extending parallel to but spaced from the edge ot said letter plate,psaid rail Ibeing corrugated transversely to provide ribs for attachment to said metal plate and slots intermediate said ribs, a clip made of spring metal having laterally spaced prongs adapted to straddle the rib of said rail and to engage in the channels at either side of said rib, and an intermediate tongue adapted to be engaged back of said rib, the upper end of said clip being adapted for engagement with the margin of said glass plate.
2. In a sign, in combination with a metal stencil plate, a glass letter vplate associated therewith, and means for holding said plate to said metal plate comprising a rail eX- tending parallel to but spaced from the edge oi said letter plate, said rail being corrugated transversely to provide ribs iOr attachment to said metal plate and slots intermediate said ribs, and a clip made lot' spring metal having laterally spaced prongs adapted to straddle the rib of said rail and to engage in the channels at `either side ot said rib, and an intermediate tongue adapted to be engaged back of said rib, said tongue being formed at its bottom end to provide a shoulder for engagement with theedge ot said rail remote from the edge oiisaid glass plate, the upper end of said clip being adapted for engagement with the margin of said glass plate.
3. In a sign in combination with a stencil plate, a glass letter plate associated therewith, and means `ro'rholding said plate 'to said metal plate comprising a rail eXtendin parallel to but spaced from the edge of said letter plate7 said rail being corrugated transversely to provide ribs for attachment to said metal plates and slots intermediate said ribs, and a clipy made of spring metal having` laterally spaced prongs adapted to straddle the rib of said rail and to engage in the channels at either side of said rib, said clip being formed at its upper end With a part oii'set from the main body of the clip for engagement back of the glass letter plate with a shoulder for engagement with the edge of said glass letter plate.
t. A holding device `for attaching a glass letter plate to a metal Stencil plate comprising a rail attached to the metal plate and a clip made of spring material adapted t'or removable engagement with said rail at one end and for marginal supporting yielding engagement against said letter plate at its other end.
5. A holding means for attaching a glass letter plate to a met-al stencil plate comprising a rail fixed to said metal plate and a clip adapted for Supporting yielding engagement against the back of said letter plate, said clip being made of spring material, and the rail and clip being provided with correlated interengaging parts for removably locking the clip to the rail.
In testimony that I claim the foregoing as my invention, I afliX my signature this 2d day of March, 1926.