A 



Popular Sicien 



Holding Asparagus in the Can 

 X asparagus can which, when her 



metically scaled under vacuum, will 

 collapse inwardly and thus increase the 

 gripping action of the can on the aspara- 

 gus, isan improve- 

 ment on the glass 

 jars and tin con- 

 tainers in use at 

 present. On ac- 

 count of the flat- 

 sided or paneled 

 construction of 

 the can the aspar- 

 agus is prevented 

 from rotating. 

 The inside of the can is lacquered to 

 resist the attack of acids on the tin. 



Adding Dignity to Condensed Milk Can's 

 CALIFOR- 



A' 



nia man has 

 devised a tea-pot 

 as an improved 

 sanitary holder 

 for cans contain- 

 ing liquids such 

 as condensed milk 

 and the like. Dis- 

 charge and vent 

 openings are ar- 

 ranged in the pot so that the liquid may 

 be conveniently poured. The can is held 

 rigidly in position by sockets. Before 

 placing the can in the pot an outlet hole 

 is punched in the bottom and a vent hole 

 in the top. 



Putting Exhaust Gases to Work 



DIFFERING from all other spark- 

 plugs, this new device relies on the 

 whirling motion of the exhaust gases to 

 remo\e carbon particles from the elec- 

 trodes as soon as 

 formed. One of the 

 electrodes is shaped 

 like a propeller, ly- 

 ing horizontal. The 

 other electrode is a 

 round rod in the 

 center of the pro- 

 peller-diskelectrode. 

 The gases are ex- 

 hausted from the spark-plug recess with 

 such force as to whirl them around and 

 between the two electrodes, carrying all 

 carbon particles with them. 



^tee/ f/ff/nff 



cc Monthly 433 



Reducing Eye- Strain 



TO sa\e tile human eye from unneces- 

 sary strain, to conserve the indirect 

 vision and relieve the muscular spasm, a 

 mechanical concentrator closely 

 resembling a pair " 



of spectacles or gog- 

 gles has been in- 

 vented. Instead of 

 lenses the device 

 has two variable 

 iris-diaphram shut- 

 ters to control the 

 extent of the open- 

 ings through which 

 the object is to be 

 \iewed and to exclude e\'erything else 

 from the direct line of vision. 



Handle and Cover for Milk Bottles 



AH A N D L E 

 and cover 

 for milk bottles 

 and otherlikecon- 

 tainers consists of 

 a device that may 

 be quickly and 

 easily applied to 

 the bottle and as 

 quickly detached. 

 With it the bottle may be held in any posi- 

 tion and the liquid poured. An added 

 feature consists of a cover which is 

 adapted to overlay accurately the bottle 

 top. A rearwardly projecting thumb- 

 piece enables the user to lift the cover 

 at will. 



Stopping Trains Automatically 



A COMBINED signaling and stopping 

 device for locomotive engines en- 

 ables the engineer to recei\e all signals 

 directly from a lamp in the cab, and in 

 the event of dan- 

 ger ahead throws 

 into operation a 

 lever which auto- 

 matically closes 

 the throttle valve, 

 stopping the en- 

 gine. A system of 

 trip levers on the 

 railroad track 

 comes in contact with a lever mounted 

 between the trucks of the locomotive, 

 closing an electric circuit and operating 

 the entire mechanism. 



