SU20905A1 - Lever shears - Google Patents

Description

In the proposed lever tailors, their tails are connected to the connecting rod of a conventional crank mechanism by means of a tube pivotally connected to it, provided with slots for the connecting rod of the connecting rod, which is gripped when the scissors are actuated by a latch, which is turned by a lever connected to the foot pedal.

In FIG. 1 shows a side view of scissors; FIG. 2 - top view; FIG. 3 and 4 different positions of the shear mechanism; FIG. 5 is a view of the scissors mechanism in section along AB in FIG. four; FIG. 6 is a view of the detail of the scissors.

The levers 1, 1 of the proposed scissors, which freely sit on a fixed axis 4 and carry movable knives, are connected in their front part by a spring 17, and in the tail part 2 are rigidly fastened with bolts 16 to the spacer tubes. In the tail section of the 2 chages 1, the axis 3 is fixedly fixed with anchoring 8 7-1 and a tube b, fitted with drawstring cuts, in which the cross member 5 is fixed on 1; the connecting rod 7 of the conventional crank mezzanizm. The heck is made in the form of a Duplex lever, one shoulder of which 8 is equipped with a hook, and the other 19 is at the end of the roller 20. it is open;

the platform of the crank arm 11 connected by a leg 14 with a foot pedal of 15 scissors. The arm 11 is provided with a shoulder 18, which interacts with scissors with an emphasis 13 fixed on the shoulder 19 of the latch, and a load 12 is located on the end of the lever IT free from the platform and sets the platform in horizontal position. The tail part 2 of the arms 1, 1 is equipped with a roller 9 designed to interact with the buffer 10 installed below it 1, which receives the blows of the part 2 of the scissors during their operation.

When the pedal is pressed, the 15 t ha 14 turns the lever 11, and the hook of the latch is set to the movement of the connecting rod 5 of the connecting rod 5, and the lever P is held in its 14th position given by the stop 13 extending beyond the protrusion 18 of the lever 11. By connecting rod 7 upward, the crossmember, gripping the latch, moves the tail part 2 of the levers 1, 1, and the shears are actuated. When the connecting rod 7 moves down, the latch is retracted by the crossbar 5, the stop 13 releases the lever 11, as a result of which the lever 11 is loaded under the roller 20 of the latch and the scissors stop until the next pedal 15 is pressed.

The subject of the patent.

1. Lever shears, characterized in that the tails of their part 2 are provided with a tube 6 pivotally connected to it, with slits for guiding the connecting rod cross member 5; 7, a conventional crank mechanism, to grip which cross member 5, with the aim of putting the shears into action, is designed the latch 8, rotated by acting on its arm 19 of the crank lever ni connected by means of the pull 14 with the pedal 15 ..

2. In the case of the scissors described in paragraph 1, use of buffer 10, which interacts with the roller 9 of the tail section of the scissors.

3. B OX: scissors, described in paragraph 1. Use of spring 17 to connect the front parts of the scissors levers.