124 



Popular Science Monthly 



A Completely Equipped Portable 

 Cabinet for the Photographer 



THE case shown is 24 in. high, 30 in, 

 long and 6 in. thick. It may, of 

 course, be made any size, but this one 

 can be placed behind a door or in a closet 



out of the 

 way, and is 

 large enough 

 so that the 

 printing box 

 compartment 

 will accom- 

 modate a 5 by 

 7-in, size or 

 smaller. The 

 capacity of 

 the case is sur- 

 prising. On 

 the upper left 

 door are the 

 scales, which 

 can be tilted 

 to bring them 

 level, a drop- 

 ping glass, 

 stirring rod, 

 palette and 

 tweezers. On 

 the upper half are eight 4 by 5-in. holders 

 and an exposure meter. On the upper 

 center shelf is room for all sorts of sen- 

 sitized paper up to 12 by 14 in. in size 

 for enlarging, and the latest negatives. 

 On the right side the shelves occupy 

 only half the width, the remainder 

 being placed on the door. 



In the case will be found 1 lb. of 

 sodium carbonate, '^ ■> lb. of sodium 

 sulphite, 1 oz. potassium metal-bisul- 

 phite, 1 bottle retouching varnish, two 

 3 oz. bottles of toner, 1 box of potas- 

 sium citrate, 1 box potassium bromide, 

 1 box of copper sulphate, 1 box pow- 

 dered alum, 1 box citric acid, 1 box 

 chrome alum, and 1 glass funnel. In 

 the bottom section is a book of for- 

 mulas. On the door is 1 bottle each of 

 10 per cent bromide of potassium, i)yro, 

 aerol, and amidol, 1 box hydroquinone, 

 1 box of potassium ferricyanide, a pack of 

 filter paper, 1 box of opaque, 1 box of 

 sepia toner, 1 box of green toner, 1 box 

 of intensifier and a rack for masks at the 

 bottom. 



When the two doors shown in the 



The cabinet when closed 

 can be carried easily 



lower central portion are closed, the 

 trays, trimming board and blotting pad 

 may be stored therein. When these 

 doors are lowered they at once become 

 available for holding the various trays 

 in development. The door in the fore- 

 ground is covered with rubber. The lower 

 central portion is also provided with a 

 folding rack for glass plates and with 

 clips for holding films while drying, 

 which keeps them out of the dust. 



At the lower left is the printing box, 

 the inside of which is painted red and 

 provided with a curtain of ruby fabric, 

 shown partly raised from the bottom. 

 This runs in grooves and is held up at 

 the top by a spring, thus closing out all 

 white light, making a fine dark lan- 

 tern. 



What appear to be two narrow drawers 

 above the lamp is the printing frame, 

 the lower half slides out only half way 

 and the top part the rest of the way, 

 so that a negative may be inserted and 

 removed easily. The red light reflected 

 from the white enamel door below, 

 throwing the rays up through the nega- 

 tive, makes placing the paper an easy 

 matter. The corner shown partly raised 

 is fastened to the frame so that when 

 the frame is pushed back in the case 

 it is forced down in close contact with 

 the paper and negative by two flat 



The cabinet opened showing the compart- 

 ments for the chemicals, plates and papers 



springs placed beneath the compartment 

 housing the scales. This door is also 

 provided with a spring to open it, as 

 shown, as it is withdrawn from the case. 

 This, of course, stops the printing. 



The lamp shown is for enlarging; the 

 one for printing is back of the curtain 



