Zipper patent. (This day in Patent History – May 31).
Patent Details:
Patent Title – Clasp locker or unlocker for shoes
Patent Number – US504038 A
Approved: 31 May 1893
Publication date – 29 Aug 1893
Filing date -7 Nov 1891
Inventors – Whitcomb L. Judson
Patent Abstract:
The invention relates to clasp lockers or unlockers for automatically engaging or disengaging an entire series of clasps by a single continuous movement.
The invention was especially designed, for use as a shoe-fastener; but is capable of general application wherever clasps consisting of interlocking parts may be applied, as for example, to mail-bags, belts, and the closing of seams uniting flexible bodies.
