The _Catch_ of the _Bar_ described at f is a piece of Wood two Inches thick, four Inches broad, and ten Inches long; The top of it is a little Bevil’d or Slop’d off, that the _Bar_ may by its _Spring_ fly up the Bevil till it stick. This Bevil projects three Inches over its straight Shank, which reaches down to the bottom; in the middle of this Shank, through the fore and back-side, is a Mortess made from within an Inch of the Rounding to an Inch and an half of the bottom; This Mortess is three quarters of an Inch wide, and hath an Iron Pin with a Shoulder at one end fitted to it, so as it may slide from one end of the Mortess to the other. At the other end of the Iron Pin is made a Male-Screw which enters into a Female Iron Screw let into the further _Cheek_ of the _Press_; so that the _Catch_ may be Screwed close to the _Cheek_, as shall further be spoken to hereafter. ¶. 12. _Of the Iron-work, and first of the_ Spindle _marked_ A _in Plate_ 8. From the Top to the _Toe_ of the _Spindle_, _viz._ from _a_ to _b_ is sixteen Inches and a half, the length of the Cilinder the _Worms_ are cut upon is three Inches and a quarter, and the diameter of that Cilinder two Inches and a quarter; between the bottom of the _Worms_ and top of the Cube one Inch and an half; the Cube marked _c c c c_ is two Inches and three quarters, the square _Eye_ at _d_ in the middle of the Cube is an Inch and a quarter through all the sides of the Cube; one Inch under the Cube at _e_ is the _Neck_ of the _Spindle_, whose diameter is two Inches, It is one Inch between the two shoulders, _viz._ the upper and under shoulders of the _Neck_ at _e e_, so that the Cilinder of the _Neck_ is one Inch long; the very bottom of the _Spindle_ at _b_ is called the _Toe_, it is made of an Hemispherical form, and about one Inch in diameter; This _Toe_ should be made of _Steel_, and well Temper’d, that by long or careless usage, the point of pressure wear not towards one side of the _Toe_, but may remain in the Axis of the _Spindle_. [Illustration: _Plate 8._] §. 11. _Of the_ Worms _of the_ Spindle. I promised at the latter end of _Numb._ 2. to give a more copious account than there I did of making _Worms_, when I came to exercise upon _Printing-Press Spindles_; and being now arrived to it, I shall here make good my promise. ¶. 1. The _Worms_ for _Printing-Press Spindles_ must be projected with such a declivity, as that they may come down at an assigned progress of the _Bar_. The assigned progress may be various, and yet the _Spindle_ do its office: For if the _Cheeks_ of the _Press_ stand wide assunder, the sweep or progress of the same _Bar_ will be greater than if they stand nearer together.