The Dictionary Of Photography

A True Historic Record Of The Art & Practice Of Photography 100 Years Ago.

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which, if possible, should face the north, and it is desired to block out this window temporarily, so that the room may be afterwards used in the ordinary way. It is obvious that pasting brown or non-actinic paper on the panes of glass is not admissible; therefore we must have recourse to some other arrangement which can be temporarily applied and bodily re-moved when done with. A convenient contrivance, which can be very cheaply put together by any one possessing a little knowledge of carpentering, may be made, or a working carpenter may construct it in a few hours at a trifling charge. To make it still plainer we will take an actual example made for our own
Fig. 52.
six feet by four feet, and, like most windows, was divided across use. The window which it was requisite to block up measured the middle by a double sash. The sashes of the window measured at the sides one inch in breadth ; at the top and bottom, two inches. Two frames were therefore made, one to fit into the upper part of the window, and one into the lower; the upper frame is shown in fig. 52, the lower in fig. 53. The frames were made of deal half an inch thick and two inches wide: the upper one, fig. 52, had a crosspiece to strengthen it, which was also convenient to lift it up by; the lower one, fig. 53, had two crossbars to strengthen it, and which were also used, as •described hereafter, for the reception of the negative. We have now the skeleton, and it is only necessary to clothe it to make it