Cover construction for a sewing machine work support column
US4262615A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05B81/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cover construction for a sewing machine work support column which is adapted to contain a looper and a thread-cutting device comprises an upright support member or column upon which a substantially L-shaped cover member is pivotal. The cover member includes a cover plate portion which extends horizontally in a closed position and covers the top of the device and a side portion which extends vertically in a closed position. The cover plate member is openable to a position opened outwardly from the support member in which position the cover is located in a vertical position and the side portion in a horizontal position. The side portion includes two bearing faces which are defined on the back and the bottom faces thereof, respectively, and which will abut against a top bearing surface of a locking member which is displaceable along the height of the upright support member. In the open position, one bearing face on the side wall is engaged on the locking member and in the closed position, the bottom bearing face engages on the top of the locking member. The locking member is biased by a coil spring around the mounting member in an upward direction in which it contracts the bearing f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.