110 GOODYEAR ON GUM-ELASTIC 



rough weather, while taking the blubber on board the vessel. 

 This invention was suggested by an experienced whaleman ; 

 and, although as yet untried, it is more than probable that it is 

 an important use of elastic cordage. See plate , fig. 



DOOR SPRINGS. 



Door springs are made of knit goods or elastic compound, 

 in the form of an endless belt, about twelve inches in length, 

 one inch in breadth, and one-eighth of an inch in thickness. 

 They are attached to the door on either side, with the different 

 fastenings, as represented in plate ii., by fig. 5, for the inside, 

 and fig. 6, for the outside of the door. 



The elastic ties or letter bands, are sometimes used in the 

 same way for cupboard, bookcase, and other doors. The 

 stayed compound, described on page , made for this purpose, 

 may be used with still greater economy when nailed to gates, or 

 on the doors of out-houses. They answer an excellent purpose 

 at a small expense when properly made. 



IMPROVED DOOR SPRING. 



Instead of the endless belt above described, a spring may be 

 made cheaper and more durable, of a single strip of gum, about 

 one-fourth of an inch thick, and from one to two inches in width, 

 stayed at each end with a small hose, in the manner described 

 on page . They are attached to the door by inserting the 

 fixtures through the hose, see plate , fig. 



LOCK SPRINGS. 



Elastic compound lock springs are the invention of another,* 

 the patentee for the application of vulcanized gum-elastic to car 



* Mr. F. M. Ray. 



