US 1094443 A
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I H. ILLIG. PROTECTOR FRAME FOR SCREENS.
APPLICATION FILED MAY 25, 1911.
Patented Apr. 28, 1914 zflz'ilzess as. I 722 We)? Z024 HEINRICH ILLIG, 0F FRANKFORT-O1\T-THE-MAI1 T-BOCKENHEIM, GERMANY.
PROTECTOR-FRAME FOR SCREENS.
Specification of Letters Patent.
Patented Apr. 28, 1914.
Application filed May 26, 1911. Serial No. 629,445.
To all whom it may concern Be it known that I, HEINRICH ILLIG, manufacturer, a subject of the German Emperor, and residing at Frankfort on the Main- Bockenhein'i, Germany, have invented certain new and useful Improvements in Pro-- tector-Frames for Screens-of which the following is a specification.
My invention relates to improvements in protector frames for screens of that kind which comprise two lined glass plates and are particularly adapted for photographical purposes.
The characteristic feature of the new binding 01' protector frame resides in the combination with a suitable number of clamping members of U-shaped section and having longitudinally slotted ends, of corner plates arranged to the inside of the adjacent ends of said clamping members and adapted to be connected thereto, and of longitudinal insertions arranged on the inner sides of said clamping members and adapted to protect the screen from heat while the parts of the frame are being soldered as well as to take up the shocks striking the protector frame. For this purpose the insertions are formed of elastic strips or members the adjacent ends of which are fitted with recesses for receiving the corner plates.
One illustrative embodiment of my invention is represented by way of example in the accompanying drawing, wherein z- Figure 1 shows one half of a screen provided with a protector frame in plan, and the other half in horizontal section, Fig. 2 shows part of the same in perspective, and Fig. 3 is an ei'ilarged horizontal sectional view.
The two plates 1 and 2 forming the screen are cemented together in known manner, and are rabbeted at 3; the U-shaped sides 4 of the protector frame are pushed onto the reduced parts of the plates so that they do not rise above the surface of the two plates. The ends of the sides at are mitered so that they fit one another exactly. The vertical faces of the sides are provided at their abutting edges with narrow horizontal slots 5, through which the auxiliary corner plates 6, which clasp the glass plates within, are
visible. when these parts are assembled in the manner shown in Fig. 2 the frame is quickly soldered by solder being brought by the point of the soldering iron into the slot 5, when it enters between the contacting faces of the corner plate 6 and the sides 4 of the frame, and thus makes a good joint.
Preferably, elastic insertions 7, e. g. of vulcanized fiber, are placed between the sides a of the frame and the edges of the glass plates 1 and Q, the height of which will correspond to that of the reduced edges of the glass plates. The adjacent ends of these members having the form of strips are fitted with. suitable recesses 8 adapted to receive the corner plates 6 so that they will aline with the surfaces of the members 7. By means of these insertions all blows struck on the reduced edges of the screen are 1noderated and, in addition, the heat radiated from the soldering iron is prevented from injuring the glass plates.
I claim 1. In a protector frame for screens, the combination with a frame, comprisingasuitable number of clamping members of U- shaped section and having longitudinally slotted ends, of corner plates arranged on the inside of the adjacent ends of said members and adapted to be connected thereto, and of longitudinal insertions arranged on the inner sides of said frame and adapted to take up the shocks striking the frame, substantially as set forth.
2. In a protector frame for screens, the combination with a frame, comprising a suitable number of clamping members of U- shaped section and having longitudinal slots in the ends, of corner plates soldered to the inside of the adjacent ends of said members across said slots, and of elastic strips fitted with recesses for receiving said corner plates and adapted to form an elastic pad between said frame and the screen, substantially as set forth.
In testimony whereof, I aflix my signature in the presence of two witnesses.
HEINRICH ILLIG. lVit-nesses HERMANN ECKERLIN, JEAN GRUND.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,
Washington, D. G.