122 



Popular Science Monthly 



Paper Funnel for Use in Place 

 of a Grease-Gun 



WHEN the motorist is in need of 

 a grease-gun and one of the 

 regular instruments is not at hand, a 



A paper cone as a substitute for a grease-gun for 

 forcing grease into gear-casings of an automobile 



good substitute may be made of a 

 paper funnel. Simply roll up a piece 

 of tough paper — heavy wrapping paper 

 will do — into a cone, fill with grease, 

 turn over the upper end and begin to 

 roll. It is like squeezing preparations 

 from a soft metal tube of the variety 

 in which pastes and medicated vaseline 

 are sold, the grease being forced out 

 through the smaller end and into the 

 casing. — R. F. Pohle. 



the chain-holder. Transfer the ring 

 from the usual hook to the winder of 

 the alarm clock, hooking it just over the 

 corner of the winder, so that when the 

 alarm starts the hook slides off and 

 closes the check draft. The fire 

 will start, and by the time you 

 get up the room will be warm. 



If you want to get up at 

 6 o'clock, set the alarm at 5. 

 If the alarm annoys any one, 

 it can be mufifled. Before leaving 

 for the ofhce, rake off the top 

 crust of the ashes, removing all 

 clinkers; see that the draft is 

 open long enough to insure a 

 fresh bed of live coals, and 

 apply coal sufficient to keep the 

 fire until noon. 



While the lower draft is open, 

 remove ashes, sprinkling them 

 as they are removed to keep the 

 dust from sifting to the upper 

 rooms. — Will Chapel. 



A Heat Regulating Device 

 for the Furnace 



TO have the house warm and com- 

 fortable when you get up, be sure_ 

 to bank the fire at night. This is made 

 easy by seeing that there is a good 

 bed of coals in the fire box before 

 retiring. 



Throw on a few shovels of coal, enough 

 to last far into the morning, and do not 

 entirely cover up all the live coals. Leave 

 a spot the size of your two hands, burn- 

 ing brightly. Now on top of the fresh 

 coal apply a coat of ashes. This is the 

 method by which night firemen hold the 

 heat in large buildings and .are able to 

 leave it, knowing the heat will be re- 

 tained and that it will be easy to quickly 

 get the normal temperature again. 



Pull up the check draft, close all 

 others, and set an alarm clock for the 

 time you wish to start up the fire, wind- 

 ing it only twice around, and placing 

 it on any convenient box or stand near 



A Key Indicator to Tell When a 

 Door is Locked 



THIS device is fitted to a key in 

 order to indicate whether a door 

 has been locked or not. Within the key 

 is fitted a small cylindrical metal piece 

 M which can rotate inside. Its upper 

 end has a screw-thread S. This piece 

 works in the small threaded hole H, and 

 can project out at the top. At the bot- 

 tom is a slotted part 

 A, which lies well 

 within the key-bar- 

 rel. On the other 

 hand, the lock com- 

 monly carries a small 

 rod that fits into the 

 key-barrel when the 

 key is inserted in the 

 keyhole, in order to 

 guide the key. All that is needed is to 

 file a square end on the rod A so that 

 when the key is inserted in the lock 

 the square end of the rod acts as a 

 screwdriver on the cylinder within the 

 key-barrel. Supposing that the key is 

 given two turns, as is usual with safety 

 locks, the screwing action causes the 

 small tip to rise out of the hole H and 

 proiect above the key at T, where it can 

 be felt with the finger, showing that the 

 key has been used in the lock. On un- 

 locking the door the tip immediately dis- 

 appears inside. — F. P. Mann. 



If the door is locked 

 a projection is felt 



