Singer treadle sewing machinesdating wireless router says validating identity
The Whitehill design became the third Singer machine with a high arm, and quickly eclipsed the other two—neither of which Bolton liked anyway.
Of Vibrating Shuttles These are shuttles of the long description, moving in a segment of a circle. The most novel machine of this kind is the vibrating shuttle machine just produced by the Singer Manufacturing Company.
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.
Variation of tension is thus obviated in a very simple manner.
The variant number was listed after the version number and (except for the K designation) a dash; for example, the model 27 standard treadle variant is "27-3".
The main competitors were Sears Roebuck & Co and Montgomery Wards & Co, who sold copied Singer models made by a variety of manufacturers: A treadle obtains power from the user's legs.
Early treadles were for just one foot making a heel-toe rocking motion, but all later treadles, including those offered with 27-series machines, were for two feet making a left-heel-right-toe (or vice versa) motion.
A model 27/127 coincidentally weighs 27 pounds (12 kg), plus the weight of its motor, treadle, or hand crank, its light, and its case or cabinet.
Such a weight strains the meaning of the term 'portable', even when fitted with only a hand crank and minimal wood case.