MECHANICS AND USEFUL ARTS. 51 



so that each stitch is looped upon the one behind it, the whole forming 

 an interlinked chain. At the factory there are several machines, most 

 of them employed in making salt-bags. About 15,000 are manufac- 

 tured daily for the salt-works in this State. One machine will make 

 from 800 to 1,000 bags per day." 



NEW MACHINE FOR SPINNING WOOL. 



Two citizens of Gardner, Me., claim that they have made an inven- 

 tion which is destined to eifejct a revolution in wool-spinning. It is 

 well known, by those who are acquainted with this kind of manufac- 

 ture, that wool cannot, like cotton, be drawn out and then twisted, but 

 that it must be done by the same operation. "The present method of 

 performing the work is by means of "jacks," which take the \vool or 

 roping that has previously been prepared by the cards, and spin it into 

 thread for warp or filling. The "jacks" occupy a large space, and re- 

 quire a great amount of labor and care to work them. But this new 

 machine wholly dispenses with the "jacks," and the thread is both 

 drawn out and twisted by the operation of this " revolving draft and 

 wool-spinner." One of these machines occupies a space of only 4 

 feet 6 inches by 3 feet, and contains 20 spindles. It is claimed, that it 

 will do the work of 50 spindles on a "jack" w r hich occupies a space 

 of 10 feet by 7. In other words, 50 spindles of the "jack-" occupy 

 78 square feet, while the spinner occupies 13^. There is, besides 

 this saving of space, a great saving of labor, as more work is per- 

 formed with less manual assistance, and also a saving of power. 



IMPROVED MACHINERY FOR SPINNING YARN. 



MR. GEORGE H. DODGE, of Attleborough, Mass., has invented a 

 valuable improvement in machinery for spinning winding-yarn, being 

 a combination of the self-acting mule and throstle, and having many 

 advantages over the common method of spinning, and equally appli- 

 cable for filling and warp. In the room usually occupied for 1,000 

 mule-spindles i.500 may be placed, which will do the work of 3,000 

 spindles. It occupies the usual space required for warp-spinning, but 

 will, it is said, spin 50 per cent, more yarn to the spindle than the 

 best ring-bobbin spindle in use, and with a saving of two-fifths of the 

 power. It is estimated to spin 100 per cent, more yarn than the 

 flyer spindle, and with one half the power compared to the quantity. 

 The spindle is more durable than the common one in use, being ta- 

 pered to the top, and there being no bobbins or check-pins used, ic 

 maintains its balance at any speed required. It is not liable to get 

 out of order, and is much more convenient to piece up the ends when 

 broken than the bobbin-frame. Messrs. Dodge & Sons have their 

 entire mill upon this method of spinning, and say, that, from twenty- 

 nine years' practical experience with other spinning, they believe it 

 to be the best in use, and know that it is worthy the attention of 

 manufacturers. 



They are daily producing more yarn from 2,320 spindles than they 



