| http://www.w3.org/ns/prov#value | - The upper extremity of the guide-bar 25 is above the plane of the disk 27 and adjustably connected to the upper extremity of the presserbar by a screw 29, whereby the projection ofthe presser-foot 23 over the work-plate may be regulated and the bearing on the work controlled in a manner best adapted for holding the same in position and to compensate for variation in difierent kinds of work.
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