The machine then stitches the buttonhole and at the completion of the stitching, the stop. The tension on the needle thread should be heavy enough to secure the buttonhole of the buttonhole at the bottom of the work. The needle vibrating lever and the upper bearing for the vertical axis must be lubricated through the opening (H, Fig. 7) of the arm cover.
This will allow access to the clutch rollers through the opening in the left side of the machine. The purpose of the feed is to move the work quickly by eye. After determining that there is no movement of the needle vibrating ring (112), tighten check nuts (220 and 221) firmly while holding the joint (109).
Should it be necessary to remove the needle bar or disconnect any part of the needle vibration mechanism, it is important that the machine is reassembled so that the needle will not hit the looper mechanism. It is very essential when reassembling the machine that special care be taken and the gears checked to see that their timing marks register with each other. Failure to have the feed wheel bevel gear and cartridge wheel shaft gear in proper time will cause a distorted shape of the buttonhole and throw the stop position out of time with either the movement of the work clamp carrier or the stitch rotating mechJianism.
If the cutting mechanism does not start even when the clamp closing mechanism is able to function, it is possible that the cutting safety. For correct positioning of the parts so that the machine does not fail to trigger the fast feed, you must see that the lock (ISO) is released. Great care must be taken when adjusting, as the machine will stop if it is locked.
The thread support should always be positioned so that each thread pulls the spool or cone in a direct line with its threading point on the holder or machine, so that the thread is not obstructed by being pulled or caught on the side of the spool or con. The threads should always be released freely from the spools or cones to ensure satisfactory operation of the machine. The needle cannot be pushed all the way into the needle holder.
When inserting the needle into the needle holder, make sure the needle hits the tip of its seat in the holder, then tighten the set screw firmly with a small screwdriver. Never use a large screwdriver on the needle set screw as this can damage the head of the screw so that it cannot be tightened enough to hold the needle. Roll the needle on its stem on the work clamp of the machine to determine if it is straight.
The needle can be turned slightly so that the upper thread loop is thrown sideways to or from the looper tips. The needle should always be placed in the holder with the eye and the short groove, with the plate above the eye facing directly towards the front of the machine, so that the loop is cast perpendicular to the movement of the loopers, while the machine is in the holder is standing. stop position. The throat plate may be incorrectly adjusted so that the needle contacts the walls of the opening in the throat plate, damaging the throat plate.
The throat plate may be incorrectly set so that the needle comes into contact with the walls of the opening in the throat plate, causing the
MACHINE 299U123
Feed the thread from the unwinder down through hole (1), through hole (2), from the back forward and right between the tension plates (3), from the back forward through the holes and (7), turn the thread nipper lever (229) so that the nipper push the thread holes out of the way. The correct setting of the trimmer is based on the height of the door plate and the underside of the clamp plate cover. The clearances between the blade guard (234) and the neck plate (21) and between the work clamp plate cover must be constant while the trinuner is moving, and there must be enough space so that the string on the neck plate will not push the blade guard (234) away from the trim position.
This can be accomplished by moving the adjustment of the cutting blade bracket (235) through the wedge (236) and at the same time adjusting the cutting blade screw (237). 44 Adjustments on lower thread and cord cutting mechanism TThe cutting blade bracket (235) together with the needle thread waste loop remover bracket (238) must be tilted as a unit on its seat on the staggered end of the thread and cord cutting lever (239). The wire and cord cutting blades must be adjusted so that when they close, the cutting edges completely pass each other to ensure that the wires and cord are cut.
To adjust the trimmer to move further back from the path of the threads and wire, turn the adjustment screw (247) to the left. Care must be taken to ensure that the thread cutting knives are not thrown so far forward that the tab in the heel of the movable blade hits the end of the slot in the cutting comb (243). CAUTION: Particular attention must be paid to closing the movable blade, which must be adjusted so that the tip crosses the cutting edge of the stationary blade far enough to just contact the underside of the blade guard.
The extreme point of the stationary cutting blade must always fit tightly against the underside of the cutting blade guard to ensure that the thread and cord are inserted into the hole between the cutting blades. The waste* needle thread loop remover (248) is not lengthwise adjustable and the front point lies within the radius of the needle thread loop held on the horn of the right hand eyelet holder (124). The height of the waste loop remover is adjusted by loosening the screw (249) and changing the slope of the waste loop remover (248).
When adjusting, keep the distance between the bottom of the waste loop remover and the top of. After trimming the string, the buttonhole cutting mechanism moves forward to a cutting position and simultaneously activates the string. 250) must pull back just enough string to allow the cut end to extend through the hole in the neck plate (21) to the opposite side of the needle opening. This will leave enough cord to start sewing the next buttonhole with.
