Dedicated motor mounting lugs, cast into the rear of the pillar, standardize the position of the motor bracket.The new mounting position solves the bobbin winder belt problem discussed later. The bobbin winder is mounted high on the pedestal, where a small rubber tire occupying its pulley makes contact with the motor belt.The button is located on the improved shuttle frame, Singer part number 54507, which can be retrofitted onto older model 27 and 28 machines. A new shuttle ejector button, invented in 1910, eases removal of the shuttle for rethreading.Models 127 and 128 are the 'modernized' versions of the 27 and 28, and carry the following improvements: This admirable motion will no doubt attract much attention from mechanists and engineers. Robert Whitehall, and consists of a vertical rocking shaft situated in the arm of the machine Motion is imparted to it by means of an elbow formed upon the main shaft acting upon two arms, called wipers, projecting from the rocking shaft, the angle formed by the arms exactly coinciding with that of the elbow in its revolution.
The chief point of interest in the machine is undoubtedly the means employed in transferring the motion from the main shaft to the underneath parts, an arrangement as ingenious and effective as any device ever introduced into stitching mechanism. Variation of tension is thus obviated in a very simple manner.
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In this case the shuttle itself consists of a steel tube, into the open end of which the wound reel is dropped, and is free to revolve quite loosely. The most novel machine of this kind is the vibrating shuttle machine just produced by the Singer Manufacturing Company. These are shuttles of the long description, moving in a segment of a circle.
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