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US 4,094,261 AGranted
Adjustable needle guard
AssigneeThe Singer Company
InventorsStanley J. Ketterer, William J. Edwards
Life of this patent
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AssigneeThe Singer Company
InventorsStanley J. Ketterer, William J. Edwards
Estimating the term…
This disclosure relates to needle guards for rotary loop takers in sewing machines and has its purpose prevention of interference between the needle and the loop seizing beak of the rotary loop taker during the sewing operation. A needle guard is provided which takes the form of a rib member formed in the bottom wall of the rotary loop taker which rib member is spaced from the vertical side wall of the cup-shaped rotary loop taker. The rib member is relatively thin and may be said to be resilient. Means are provided for biasing the rib member toward and away from the vertical side wall of the rotary loop taker in order that the rib member may be adjusted relative to the reciprocating path of the needle so that the needle will be deflected away from the loop seizing beak of the rotary loop taker upon penetration of the fabric by said needle and thereby prevent a scoring of the loop seizing beak or a breakage of the needle.
A rotary loop taker for a sewing machine having a reciprocatory needle operating in a path for cooperating with said loop taker, said loop taker including a cup-shaped body formed by a bottom wall, a vertical side wall extending from said side wall, a loop seizing beak formed in said annular wall, a resilient rib member formed in said bottom wall, said rib member being spaced from said vertical side wall and disposed at a location substantially beneath said loop seizing beak, and means for deflecting said rib member away from said vertical side wall for adjusting the position of said rib member relative to the operating path of said needle and causing the rib member to be in a position for deflecting the needle away from said loop seizing beak.
Dependencies are inferred from the claim text.