angle with the horizontal in order that these mirrors may be more conveniently adjusted at proper angles, so as to deflect the rays of light in the desired manner.

While there may be many ways of adjusting the angles of these mirrors, I prefer the manner shown in Fig. 3 of the drawings, in which one end of one of the mirrors is shown, the view being taken on the section-line 3 3 of Fig 1. Each mirror is provided at each end with a section h, preferably metallic attached thereto by screws h' or in any other desired manner.

h² is a clamp formed of a forked piece which straddles this metallic piece h and is adjustably attached thereto by a thumb-screw h³, so that the position of the mirror in the clamp may be adjusted to raise or lower the mirror in the clamp. This clamp h² has a stud h⁴ projecting from its rear, which sets into a suitable hole in a boss h⁵, a thumb-screw h⁶ being provided to adjust the angle of the clamp h² in this boss, and the boss itself is provided with a clamp h⁷ and screw h⁸, by means of which its position on the rod G is adjusted. Thus the position of the clamp h² with relation to the rod G may be adjusted and the angle of the mirror with relation thereto may also be adjusted. This construction, however, is capable of still further adjustment, for the angle of the rods G, and consequently of all the mirrors, may be adjusted with relation to the plane of the upper sash D, and this is accomplished by the means shown in Fig. 5. Each rod is telescopic, being composed of a sleeve or tube and a rod sliding within it, these two parts being inclicated by the letters g g'. The rod g and the sleeve g' are each pivoted at g² to a hook-shaped clamp g³, which surrounds one of the rods e e' and is provided with a set-screw g⁴, by means of which it may be clamped to its rod. If, therefore, it is desired to raise the rods, and consequently the mirrors, at the rear end, it may be done by unscrewing the rear set-screws g¹ and raising the clamps g³ on the rods e, the necessary change in the length of the rods G being compensated for by the lengthening of the rods G. The screws g⁴ are then tightened again. If desired, of course the front ends of the rods may be raised, and if the rear ends of the rods are too high they may be lowered in like manner. The rods and mirrors thus form a deflecting-frame capable of many adjustments, especially where the position of each mirror may be adjusted about its longitudinal axis, as shown. The mirrors may be of any desired size. It will be seen that by this means llght may be thrown upon any or all parts of the show-chamber, or it may be concentrated upon one part if thought best, and, moreover, the adjustment of the mirrors may be very nicely accomplished to bring about such result, as will be seen from Fig. 1, where it will

be noticed that one mirror H hangs quite below the rod G, the next mirror H' rising slightly above it, the next mirror H² rising a little higher &c., the mirror H⁹ being practically supported from its base, so that it is almost entirely above the line of the rod G. Moreover, intermediate mirrors H¹⁰ H¹¹ may be hung with their reflecting-faces rearward, so as to take the reflection from the mirrors H⁷ H⁸ and throw the light received from them toward the rear upper wall of the show-chamber. It is apparent that various combinations of these mirrors may be utilized, and almost any desired illuminating effect attainable by natural light may be secured in the show-chamber.

In Figs. 1 and 6 the course of the rays of light are indicated by dotted lines.

In Fig. 6 I have shown a modification and simplification of this idea, in which, instead of the roof comprising the reflecting apparatus, such as has been above described, and a dust-proof transparent ceiling to the display-room, I have combined the reflecting and closing elements in one prismatic roof J, which combines the possibility of deflecting the light, together with the dust-proof quality secured in the construction of Fig. 1, by means of plate-glass C. This construction is of value for the reason that the light deflected from the sheet of prismatic glass forming a portion of the front window and caught by the horizontal sheet of prismatic glass (indicated at J) will be thrown downward; but it does not secure the adjustable opportunity which makes the first construction above described of great value.

The value of this construction will manifest itself to any one who has had experience with dressing shop-windows, as not only is the device dust-proof, so that the goods may be kept clean from dust constantly arising from the store itself, as well as from the street, but the amount of available light may be increased and distributed as desired into every portion of the window, and, moreover, this construction will largely overcome the reflection which often throws back light from the plate-glass in the front of the window into the eyes of the observer, all this being accomplished at the same time that the light thrown into the rear of the store is increased over the amount usually received there.

Of course the plain-glass sheet F may be omitted and, if desired, the dust may be kept from the display by carrying the walls B to the ceiling of the display-room, if thought best. Moreover, while mirrors are the best reflectors for this purpose other means for reflecting or deflecting light may be substituted therefor and the means for adjusting the reflectors may be altered without departing from the spirit of my invention, which primarily includes means for downwardly deflecting natural light upon the goods in a