Weaving; a practical guide to the mechanical construction, operation, and care of weaving machinery, and all details of the mechanical processes involved in weaving . WEAVING. 125 take some scrap leather, choose the firmest pieces, and cut them tothe shape of the picker, and add these to the best part of the oldone, nailing all together, and you Avill find that there will be aconsiderable saving in pickers. Swells or Binders. The term binder or swell is the nameused to designate the loose portion which holds the shuttle in placewhen in the box. The jjart which a particular binder plays in thep
Weaving; a practical guide to the mechanical construction, operation, and care of weaving machinery, and all details of the mechanical processes involved in weaving . WEAVING. 125 take some scrap leather, choose the firmest pieces, and cut them tothe shape of the picker, and add these to the best part of the oldone, nailing all together, and you Avill find that there will be aconsiderable saving in pickers. Swells or Binders. The term binder or swell is the nameused to designate the loose portion which holds the shuttle in placewhen in the box. The jjart which a particular binder plays in theproduction of a loom, is not taken sufficiently into account, andcareful consideration of the following is consequently are two distinct shapes; we will term them the bow orblunted swell, and the gradual tapered swell. Front Binders. The first to be considered. Fig. 86, is a swellthat bulges into the box, and actually closes up the space whichthe shuttle should occupy, and to which it should have almost free. Fig. 86. BluDt Shaped Binder. access ; consequently the shuttle strikes hard against the swell inentering. More power is required to drive the shuttle when thisswell is used, because it comes suddenly in contact with a toogreat resistance. This will in turn cause undue friction on thebinder pin, also on the protection finger. There are more rebound-ing shuttles from the use of blunted swells, than from almost anyother source. There being less space in the box where the shuttle strikesthe binder, more power must be applied to the pick motion todrive it far enough into the box. This sudden jar not only checksthe shuttle but causes the binder to spring back, when the pres-sure releasing the shuttle allows it to shoot into the box, with theresult that it strikes hard against the picker, forcing the stickagainst the back end of the box, and finally the hard check thusreceived makes the shuttle rebound. The loss incurred through a 139 126 WEAVING. rebounding shutt
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