crew the nuts so
tight as to make the plates bulge out at the center. The rod should
project the same amount on each side of the element.

Place the element in a vertical position.

The cover can now be placed over the posts. Slip a rubber washer and a
lead collar over each post. The two key holes in the lead collar are
unequal in size. The collar must be placed over the post so that the
end which measures 3/16 inch from the bottom of the holes to the end
of the collar will be next to the rubber washer. Dip the lead key in
water and then put it through the holes, having the straight edge of
the key on the bottom side. This operation can easily be done by using
a pair of tongs (see Figs. 330 and 331) to compress the washer. After
the keys are driven tight they can be cut off with a pair of end
cutters and then smoothed with a file.

Sealing Element Assembly in Jar

[Fig. 332 Sealing Element Assembly, Willard farm lighting cell]

Turn the element upside down and place over a block of wood so that
the weight is supported by the cover. (See Fig. 332.)

Heat the sealing compound by means of a flame (a blow torch will
answer the purpose), and place the jar over the element, as shown in
Fig. 331. The jar should be firmly pressed down into the compound.
With a hot putty knife, clean off any compound which has oozed out of
the joint. The assembled cell can now be turned to an upright position.

In case it is necessary to remove a cover, heat a wide putty knife and
run it around the edge between the cover and the glass jar. This will
soften the compound so that the cover can be pried off.

If it is necessary to remove the cover from the posts, the keys must
be driven out by pounding on the small end, as the keys are
tapered-and the holes in the lead collars are unequal in size.

Filling with Electrolyte

Fill the cells with 1.260 specific gravity electrolyte at 70 deg. F. to
the LIQUID LINE marked on the glass jars. (About I inch above the top
edge of separators.) Allow the cells to stand 12 hours, and if the
level of the electrolyte has lowered, add sufficient electrolyte to
bring it to the proper height.

Initial Charge

Connect the positive terminal (long strap) of one cell to the negative
terminal (short strap) of the adjacent cell and continue this
procedure until all the cells are connected together. This will leave
one positive and one negative terminal to be connected respectively to
the pos