...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 5950413 | Spinning apparatus, method of producing yarns, and resulting yarns A spinning apparatus is disclosed according to the invention having a drafting zone comprising at least four roll pairs for drawing a sliver comprising one or more types of staple fibers. The rolls pairs include a back roll pair, intermediate roll pairs a... | 09/14/1999 |
| 4644609 | Spinning machine drafting frame In order to make possible automatic restart of a spinning machine drafting frame after strand breakage in an easy way, a movable blocking member is insertable between the drive roller of the lower feed belt and the lower feed belt in the direction of the ... | 02/24/1987 |
| 4513481 | Easily displaceable bottom tenser A bottom tenser utilized for a drafting means of a spinning frame, especially for fasciated yarn spinning, in which a fiber bundle is attenuated at a high speed exceeding 100 m/min. The bottom tenser as well as a bottom roller corresponding to the tenser ... | 04/30/1985 |
| 4387487 | High draft apparatus in spinning machine A high draft apparatus in a spinning machine for forming a spun yarn from a roving or sliver. The draft apparatus comprises back rollers, apron-provided middle rollers and front rollers and a gripping and a pressing means for a sliver disposed on the fron... | 06/14/1983 |
| 4280252 | Double-apron drawing mechanism The double-apron drawing mechanism includes a feed couple of rollers and a delivery couple of rollers, with the fibrous material being treated passing between the two endless aprons or belts of the feed couple, synchronously rotated about the driven and p... | 07/28/1981 |