278 Popular Science Monthly 



A Sandpaper Label for the Poison To Make Your Shoes Last Longer, 

 Bottle Gives Warning in the Dark Oil Them Occasionally 



PERHAPS the simplest 

 for protecting people 

 doses from poison bot- 

 tles by mistake, is the 

 sandpaper label shown 

 in the accompanjdng 

 illustration. The act- 

 ual label with its usual 

 skull and crossbones is 

 pasted on a piece of 

 sandpaper large enough 

 to go all around the 

 bottle, so that when 

 you take up the bottle 

 in the night, no matter 

 how dazed from sleep 

 you may be, the rough 

 unfamiliar feel of the 

 sandpaper rouses you, 

 and you recognize at 

 once that the bottle 

 contains poison of some 

 description. The 

 printed label will tell 

 the kind. 



of all devices 

 from taking 



w 



HEN your shoe leather gets dry or 



hard, you 



The sandpaper label is pasted on 

 a bottle which contains poison 



A Trolley Hoist for 

 Handling Coal 



IN small boiler plants where 

 coal has to be transferred 

 from an outside bin to the fur- 

 nace doors, the small electric, 

 cord-operated trolley hoist 

 shown in the accompanying il- 

 lustration solves the problem 

 economically in almost every 

 case. The hoist shown is filled 

 by hand but is self-dumping and 

 self-righting. It has a carrying 

 capacity of a half ton of coal. 



The overhead trolley on which 

 the hoist is suspended is carried 

 clear into the boiler-room which 

 is in the building shown in the 

 background, so that one man, 

 with simply the labor of filling 

 the bucket, can keep a battery 

 of boilers supplied with coal all 

 day long. The bucket can be 

 raised or lowered at will while it is 

 traveling to and fro between the 

 coal pile and the boilers by sim- 

 ply pulling on the operating cord. 



should oil or grease it. 

 To do this, first brush 

 off all mud and then 

 wash the shoe in warm 

 water, drying it with a 

 soft cloth. 



While the shoe is 

 still wet, apply the oil 

 or grease, rubbing it in 

 with a swab of wool, or 

 better still, with the 

 palm of the hand. After 

 treatment, the shoes 

 should be left to dry in 

 a warm, but not in a 

 hot place. Castor oil 

 is recommended for 

 shoes that are to be 

 polished. For plainer 

 footgear, fish oil and 

 oleine or any one of 

 the less expensive oils 

 may be substituted 

 with very good results. 



Althout;li i>cir duiupmi; and sell' iighlin-, the hoisl is 

 filled by hand. It can lift half a ton of coal 



