CH. XI] 



PRECAUTIONS FOR MOVING PICTURES 



429 



of cement on the corners of the 

 film. Then immediately press 

 the two ends of the film together 

 firmly for a few seconds, being 

 careful not to push the ends of 

 the film sidewise in doing so. 



Several points must be care- 

 fully observed in order to get a 

 splice which is satisfactory and 

 durable. 



i . Cut the film so that the di- 

 viding lines between two pictures 

 come exactly together or there 

 will be a "misframe" when the 

 film is running through the ma- 

 chine. 



FIG. 235A. EDISON FILM MENDER. 



(Cut loaned by the Edison Manu- 

 facturing Company). 



It has three gates or hinges those 

 on the sides clamp down and hold 

 the film while the ends are cut and 

 prepared and the cement is applied. 

 The narrow middle clamp is then 

 closed holding the ends of the film 

 firmly in contact while the cement 

 dries. The gauge shown at the left 

 enables the operator to cut true edges 

 on the film and scrape the proper 

 width for the cementing. 



FIG. 235. METHOD OF PATCHING A 

 MOVING PICTURE FILM. 



One end of the film B, b is cut on 

 the line between two pictures and 

 the other end A , a, is cut a short dis- 

 tance beyond the line between two 

 pictures. The film side of one and 

 the shiny side of the other are 

 scraped, cement is applied and the 

 two ends are placed together so 

 that the sprocket holes will match. 



2. Scrape the film well, 

 both the back side of b, and 

 the emulsion side of a. 



3. Apply the cement and 

 work rapidly. 



4. Be sure to hold the 

 emulsion side of both films 

 either up or down. 



