Belt guard lock

Details Belt guard lock Belt guard lock

1981-03-06

1983-12-06

Reynolds, Wm. Carter

Sewing

Elements

Guards

D05B 8300

Patent

active

044186304

ABSTRACT:
A belt guard lock for a belt guard pivotable on a pivot shaft affixed thereto and supported in a pivot frame attached to the sewing machine table, which guard lock effectively prevents pivoting of the belt guard by a sewing machine operator but may be readily defeated by a suitably authorized maintenance man. The guard lock fits about the pivot shaft affixed to the belt guard and remains therewith, so as to be available for use in any machine to which it is attached. The guard lock is implemented by a collar slidable on the pivot shaft and having a flange thereof which extends between the lower edge of the belt guard and the sewing machine table to prevent rotation of the belt guard. The belt guard lock may be rendered ineffective by loosening a special set screw inpinging on the pivot shaft and sliding along the pivot shaft to a position where the flange thereof is aligned with a slot in the belt guard to accommodate the flange during pivoting motion of the guard.

REFERENCES:
patent: 461497 (1891-10-01), Dobeck
patent: 947651 (1910-01-01), Schreiber
patent: 1285725 (1918-11-01), Judelshon
patent: 1302196 (1919-04-01), Migliore
patent: 1439552 (1922-12-01), Johnson
patent: 1444379 (1923-02-01), Jones
patent: 2168501 (1939-08-01), Stoyanowski
patent: 2486528 (1949-11-01), Hope
patent: 4313321 (1982-02-01), Wasser

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