. : : - 



h block tllufttrut<d th journal i* lubricated \>y***+tU* 



fabricator ; this consists of an inverted glass bottle fitted with 



s> wood stopper, through a hoi. m which pi MM a piece of w m . 



has one end in !,.- ..il ^ ,!,.., the bottle, and the othrr 



i . -i j . . ! i 1 1 . : ' ; . : I . - . : 







- not escape owing to capillary attraction. 

 Whan, however, the shaft rotates, the needle begin* 

 and t hi- oil run* down ! H therefore 



only tmed when the shaft U rum 



28 : Pillow Block for a Four-inch Sha/t.-l>r* 

 Ihe Tiewt ihown of thu block in fig. 88. Make abo teparate draw- 

 ingi, (all ate, of one of the tlepa, Soalo 6 inehe* to a foot. 



./" /'I/A,, -The following nilee may 



be used for proportioning pillow block* for shafts up to s inches 

 diameter. It should !* n-i... h* proportions used 



by different makers vary considemMy, hut th.- f.l|..u ii,. rules 



l'..T.l-J,' |.| -i, t;.,. 



Diameter of journal . -</ 



Length of journal . -/. 

 Height to centra 



Me* -ft. 



uofbaw . 

 block. 



Thickm-wof ha*,- . -'84* + '3. 



cap .,,/ + 



:1 rtrof bolU . -Sfi^^-S5. 



Distance between centras of cap bolt* 144 



bssebolU-S: 



TbickncM of step st bottom r - <9 4 + ! 



i.U- . f f. 



1 varies very much in different 



caeca, and depends \. >i* shaft, the loud 



it carriea, the workmansh ml and bearing, and th.- 



method of lul ordiiuuy shafting one rule is to 



= ,/4-l. Some makers use the rule /- i-W; others 



