Escapement Mechanism
The escapement mechanism of models 1, 2, 3, 4, and 5 machines consists of two pawls, a verge, and a verge spring for each character in the magazine. The verge is hinged on a pivot rod. The lower end of the pawls are seated in the verge, and the upper end projects through the under side of the magazine and engages the lower lugs of the matrices. When the escapement is at its normal position, the lower or front pawl extends up into the magazine and holds the column of matrices in the channel. The end of the upper pawl is flush with the bottom of the channel groove. The verge and pawls are held in this position by the keyrod, which hooks onto the verge. This keyrod is held down by its own weight and a spring near its lower end. The verge spring, which sets directly back of and against the verge, has its tension upward on the verge. When the key is touched and the cam yoke raises the keyrod, it releases the verge, which is pulled upward by the verge spring. This action lowers the front pawl and raises the back pawl, releasing the front matrix. The back pawl detains the other matrices, holding them in the channel until the verge is restored to normal. The keyrod spring pulls the keyrod down. The verge, being hooked to the keyrod is pulled down also. This brings the front pawl up and the back pawl down, letting the matrix slide to position ready for the next escapement. This verge action is the same on all single magazine models.
Each magazine of a model 1, 2, or 3 machine carries the escapement assembly on the bottom, at the front, directly above the keyrod upper guide.
On a model 5 the verge escapement is fastened by means of two screws and two dowel pins to the intermediate bracket of the machine. To remove: Take off the magazine and then raise the keyrods with the hand lever at the right of the keyrods. This will leave the keyrods free to be pushed back from the verges, by withdrawing the spring pin which holds the upper keyrod guide to the verge pivot rod at the right-hand side, under the escapements, and pushing back on the guide. The escapements can then be removed by taking out the two screws, one at each end, and lift off the dowel pins.
The escapement mechanism of models 8, 14, 18, 19, 14-s-k, and K is similar to the model explained above, except that the verge spring pulls downward on the verge instead of upward, as in the other models. The escapement is operated by the escapement lever and a plunger from the front. The keyrod forces the escapement lever upward. The lever strikes the plunger and forces it against the verge.
The model 8 or 14 verge escapements can be removed by raising the magazine and pushing the escapement back from between the escapement supports.