Remove the shuttle-retaining ring (Fig. 28-3-2) and you can take out the shuttle hook (Fig.
28-3-3) from the front-face. After cleaning replace the hook first, and put on the ring. Be
careful that the pin at the side of the ring should engage with the notch (Fig. 28-3-4). Shut
the latches at last.
Fig. 28-3
17. LUBRICATION
For easy and quiet running, the bearings and contacting parts should be kept clean and
lubricated constantly. This will prolong the life of the machine.
For lubrication, sewing machine oil should be used. Never use vegetable oil. One or two
drops for each spot (see Fig. 29, 30, 31, 32, 33) is sufficient. Excessive oiling is not
advisable, as this will stain the material to be sewn.
Fig. 30
Fig. 31
Fig. 32
Fig. 33
Fig. 29
18. CHART SHOWING DIRREFENT SORTS OF NEEDLE AND THREAD FOR
DIFFERENT TYPES OF MATERIAL
Fineness of Thread
Material
Needle No.
Silk
Fabric
Very
Thin
Muslin
Cambric
Linen
Embroidery, etc.
HA x 1 #9
80 / 3, 70 / 3
80 / 3
Very Fine Calicoes, Linens Shirting, Fine
Silk Goods, Embroidery, etc.
HA x 1 #11
80 / 4, 60 / 3
60 / 3
Shirting Sheeting Bleached Calicoes,
Muslin, Silk and General Domestic Goods,
etc.
HA x 1 #14
50 / 3
45 / 3
All kinds of Heavy Calicoes, Light Woolen
Goods and Heavy Silk, Serge, Corduroy.
HA x 1 #14
50 / 3, 40 / 3
45 / 3
Ticking, Woolen Goods Thin Canvas,
Trousers, Cloaks, Mantles, etc.
HA x 1 #16
40 / 3, 32 / 4
