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Both machines have an additional short bar connected from above to foot bar. I am not really shure about function My Singer 34(pre34 model) does not have it At 34, it seems to do nothing, until food is lifted (or not really much) The 45 lifts foot on it's own after each stitch. and so the whole device does Other models known having this are for example 16KSV11, 16KSV23, 34K5 (not all, due model change or remove), 34KSV5, 45K48, 45K53....

...actually, only precice Singer source says "alternating presser" ,not "walking foot" so, same as my Singer 15-39, differences are: - 15-39 is the backside foot the pulling one, jumping after pull forward, while 78-3 front foot is pulling in a circle move. - 15-39 has feed dog (single line, as also for leather), no needle feed (see pic) Now here is the question (or are the questions): What exactly is the difference of walking foot and alternating presser? I have here two "Singer walking foot attachments", having an inner and an outer foot. But I am not shure about that. My Singer 29 (long freearm shoemaker) has, what I would call a walking foot, (pulling after stitch back, when needle entered cloth/leather, it's going up and in ordinary position) Also Singer 16 KSV 11 has a single foot, but some do not call it walking foot. ----------------------------------------------------------------- Does anybody have a picture of Singer 78-3 (maybe also other do it) from backside? My machine has close to presser lever a loose plate with 2 holes at upper end. Ok, machine lies flat on ground, I forgot to rotate the image to normal stand

actually, it's not for leather, it's for sacks. And so, it has no feed dogs or such. I wonder, if anybody has informations on it. Or pictures /ideas to build transportation (stitching plate and feed dog are available on ebay, other parts not. But I could also think about something like on Singer 29) The other special about: it lifts the foot between stitches (shure, very useful, when repairing bags), maybe I can use it for fat embroidery😁

an older freeby Sadly I can not answer to that topic directly. Just searching infos on some machines shown here: - picture 3 and 4: the black machine in front of the light golden Pfaff - pic 17 (on pic 20 between No 61 (Singer 11) and No 73), 2 yellow bonds: which type? (maybe 7 double-needle type) Grats to the lucky one, who could take the collection: Those are not just industrial machines, many, maybe most are real special ones