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US 4,434,736 AGranted
Strain controlled sewing machine mount
AssigneeThe Singer Company
InventorsJan Szostak, Albert L. Newman
Life of this patent
Estimating the term…
Abstract
A sewing machine is secured to the platform of a sewing cabinet with a machine connected stud and a wing nut which is threaded on the stud and is permitted to turn only a limited amount so as to prevent excessive force from being applied to the machine.
Claims7
In combination, a sewing machine including a frame with a depending threaded stud attached thereto;
- a platform with a top surface upon which the machine is supportable in a sewing machine cabinet;
- a second stud detachably secured to the first mentioned stud and extending through a hole in the platform, said second stud including a threaded portion which projects beyond the bottom surface of the platform;
- a wing nut on the threaded portion of the second stud;
- a coil spring on the second stud compressed by the wing nut;
- and a washer on the second stud forced against the bottom surface of the platform by the spring, the washer including upwardly extending prongs which dig into the platform to prevent the washer from turning, the washer also including downwardly extending prongs engageable with the wing nut for limiting the extent to which the wing nut can be tightened on the second stud as the wing nut is turned to affix the sewing machine to the platform.
2 more elements
Dependencies are inferred from the claim text.