JPH0275078U - - Google Patents

Description

[Brief explanation of drawings]

1 to 5 show embodiments of the present invention; FIG. 1 is a perspective view showing an overview of the invention; FIG. 2 is a front view showing the upper position of the upper feed tooth of the invention; FIG. 3 is a front view showing the lower position of the upper feed tooth of the present invention, FIG. 4 is a sectional view showing the main parts of the present invention,
FIG. 5 is an exploded perspective view showing the main parts of the present invention, and FIG. 6 is a front view showing the structure of a conventional example, in which 2 is a first presser adjustment screw, 2' is a second presser adjustment screw, 4 is the upper feed presser bar, 5 is the presser bar, 7 is the presser bar, 10
1 is the upper feed spring holder, 11 is the upper feed presser bar, 1
2 is the upper feed upper and lower crank, 17 is the upper feed presser spring, 19 is the upper feed upper and lower arm, 21 is the presser foot, 27 is the upper feed dog, 30 is the upper feed horizontal arm, 38 is the presser spring holder, and 39 is the presser spring holder. It is the body.

Claims (1)

[Claims for Utility Model Registration] (1) A hollow upper feed presser bar 4 that is slidably supported on the arm machine frame of the sewing machine, and a hollow upper feed presser bar 4 that is slidably supported in the hollow portion of the upper feed presser bar. a presser foot 5, a presser foot adjustment screw 2 that slidably supports the upper end of the presser rod and is attached to the arm machine frame, and a presser foot 21 that is removably fixed to the lower end of the presser rod 5; The upper feed dog 27 is attached to the lower end of the upper feed presser bar so as to be slidable in the feeding direction, the upper feed presser bar plate 11 is fixed to the upper end of the upper feed presser bar, and the upper feed presser bar plate 11 is fixed to the upper end of the upper feed presser bar. An upper feed upper and lower crank 12 rotatably supported on a horizontal axis; an upper feed upper and lower arm 19 connected to one end of the upper feed upper and lower crank and swinging in conjunction with the operation of the sewing machine; An upper feed spring receiver 10 which is slidably provided on a guide shaft which is clamped at the other end and is fixed to the arm machine frame, and an upper feed horizontal arm 30 which is connected to the upper feed dog and interlocks with the movement of the sewing machine. In the vertical feed sewing machine, a lower plate is brought into contact with the upper surface of the upper feed presser foot, a countersunk-shaped hole 38d is formed on the upper surface, and a presser spring receiver 38 having a U-shaped cross section is provided. A presser spring receiver 39 is interposed between a hole formed in the upper surface and the presser rod 5 and has a spherical portion 39a formed below, and the upper surface of the presser spring receiver and the lower end of the presser foot adjustment screw 2. Upper feed press spring 1 interposed between
7 and the lower end of a second presser adjustment screw 2' which is disposed coaxially with the upper feed presser spring and is screwed into the bottom of the hollow part of the presser rod and the hollow part of the presser adjustment screw 2. A spring pressure structure for a vertical feed sewing machine, characterized in that a presser spring 7 is interposed in the vertical feed sewing machine. (2) The spring pressure structure of the vertical feed sewing machine as set forth in claim 1 of the registered utility model, characterized in that the pressure of the upper feed pressing spring is made stronger than the pressure of the pressing spring.