DOI Page / Citation link:
https://doi.org/10.11588/diglit.62828#0585
( 423 )
planed off like a wedge, of the width of the rollers, and whofe
thin end is glued to meet the rollers as they rife, fo that the till
can thereby be raifed as high as we pleafe. Thefe wedges being
glued on the under fide of the till to fuit exactly the place of
the rollers, the projection of the wedges below the till makes it
neceffary that there fhould be a vacuity in the axis A A, for
them to fall into when the till is down; becaufe, in this fitua-
tion, the till refts on the three rollers, which are nearly on a
level with the axis A A. And as the wedges above mentioned
muft lie acrofs the axis A A when the till is down, every work-
man muft fee the neceffity of a vacuity, or other wife the till
would not fettle to its place.
The next thing in order is to fhew how one of the hops
can be relieved, or flipped back, fo that the till may be taken
quite away. The conftrudtion of this flop is fhewn by No. 4,
which fuppofes that we fee the under-fide of the till. A is a hole
cut through the till, which hole is drawn by a compafs, having
one foot at C the center. P is a round pin, which comes through
to the infide of the' bottom of the till. K is a tin key which
hooks this pin. In applying this key to the pin, the writing
flider, fhewn in the defign, muft be pufhed in, and the front-
part which covers the letter holes turned up to its place; and
there being a groove acrofs the under fide of the flider, exactly
8 where
planed off like a wedge, of the width of the rollers, and whofe
thin end is glued to meet the rollers as they rife, fo that the till
can thereby be raifed as high as we pleafe. Thefe wedges being
glued on the under fide of the till to fuit exactly the place of
the rollers, the projection of the wedges below the till makes it
neceffary that there fhould be a vacuity in the axis A A, for
them to fall into when the till is down; becaufe, in this fitua-
tion, the till refts on the three rollers, which are nearly on a
level with the axis A A. And as the wedges above mentioned
muft lie acrofs the axis A A when the till is down, every work-
man muft fee the neceffity of a vacuity, or other wife the till
would not fettle to its place.
The next thing in order is to fhew how one of the hops
can be relieved, or flipped back, fo that the till may be taken
quite away. The conftrudtion of this flop is fhewn by No. 4,
which fuppofes that we fee the under-fide of the till. A is a hole
cut through the till, which hole is drawn by a compafs, having
one foot at C the center. P is a round pin, which comes through
to the infide of the' bottom of the till. K is a tin key which
hooks this pin. In applying this key to the pin, the writing
flider, fhewn in the defign, muft be pufhed in, and the front-
part which covers the letter holes turned up to its place; and
there being a groove acrofs the under fide of the flider, exactly
8 where