be pushed backward towards the end of the guide plate 12 and then opened outwardly fig1 is a top view after the thrust board 14 is opened the spring 18 is extended and the row of joined nails 1 can be loaded into the machine body 8 through the opening in the body fig1 shows a row of joined nails 1 in the body 8 the thrust board 14 contantly pushes the row of joined nails forward towards the front of the body because of the compression force of the spring the row of joined nails 1 is stopped by the nail hook 10 since the gap between the nail hook 10 and body 8 can hold only one nail at a time just one nail is exposed from the body 8 the nail which is exposed has its head facing the thrust pin 4 fig1 is a side view of fig1 in which the row of joined nails 1 is within the body 8 since the upper guide plate 12 is shorter than the lower guide plate 13 the row of joined nails is disposed in an inclined position the head of the exposed nail contacts the guidance surface 6 of the thrust pin 4 at one point only when the thrust pin 4 is hit the pin will hit the nail and drive the nail into wood fig4 fig5 and fig6 are a series of drawings indicating the consecutive action of the thrust pin 4 hitting a nail fig4 shows the guidance surface 6 in contact with a nail head at a point just prior to hitting of the thrust pin 4 fig5 shows the guidance surface 6 of the thrust pin holding a nail in position while the thrust pin is hit at.