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US 4,281,782 AGranted
Button sewing device
AssigneeThe Singer Company
InventorsWalter H. W. Marsh, Michael J. Brienza
Life of this patent
Estimating the term…
Abstract
A button sewing device is provided with a base; a pair of needles which carry collapsible thread formed loops, and project from the base for use in penetrating a layer of material and the holes of a button to be attached to the material; and with elastomeric material over the base compressible by pressure on the material to which the button is to be attached, and expandable to raise such material and thereby cause the loops to be opened above the button for receiving a thread bundle.
Claims11
A button sewing device comprising a base;
- a pair of needles projecting from the base for use in penetrating a layer of material and extending through the holes of a button to be attached to the material, a loose loop of thread extending through the eye of each needle and having ends fixed with respect to the needle, the thread being movable by the material into positions against the needles to close the loops as the material is moved down the needles;
- and elastomeric material over the base and about the needles compressible under the material by pressure applied to the button after it has been moved down the needles, and expandable when the pressure is removed for raising the material and thereby the thread to open the loops above the button for receiving a thread bundle.
Dependencies are inferred from the claim text.