180 WMotice of the Brewster Wool Spiuniog Frame. 
Ary. XVII.—Notice of the Brewster wool spinning frame—~ 
in a letter written in answer to inquiries from the Editor, 
by S. D Hunparp, Esq. and dated Middletown, July 
25, 1625. 
Desae Sis, 
Ix reply te your inquiries in your favour of the 21st re- 
specting the Brewster wool spinning Frame, of which the 
anseer company of this place are the sole proprietors and 
builders, I have obtained the following brief, but I trust sat- 
isfactory statement from the Secretary of the company. 
The Brewster Frame, deriving its name from the inven- 
tor Mr. Gilbert Brewster, a distinguished mechanist and na- 
tive of this State, is so constructed that by the continued ro- 
tary motion of the main shaft, to which the moving power is 
applied, all the operations that are performed by the hand 
on the single domestic wheel, of drawing out, twisting, and 
winding up the yarn, to form the cap are perfected, leaving 
to the attendant no other labour than that of joining the threads 
as they may occasionally break. The direction of the draft 
being vertical, the frame occupies not more than one sixth 
of the space required for jennies doing the same amount of 
work, and enables the attendant to mend the threads with 
much greater convenience. The length ofthe draft or quan- 
tity of slubing to be drawn out and the time of throwing in 
and continuing the twist being comprehended within the 
principle of the frame, they may be varied at pleasure. It 
is only necessary for the person in attendance, after ascer- 
taining the description of yarn, she is wished tospin, whether 
fine or coarse, hard or slack twisted, to adjust the frame with 
a wrench to the quality, shortening or protracting the period 
of the closing of the jaws on the slubing as she may wish it 
finer or coarser, and varying the time of carrying on and off 
the belt from the twisting cylinder, according as she may de- 
sire her yarn hard or slack twisted. When once adjusted, 
the frame continues in the same state producing a uniform 
thread, and possesses the additional advantage from its mee 
chanical construction, and the uniform regularity of its 
movements, of furnishing, if required, a thread slacker twisted 
for filling, and for warp, one harder twisted than can be spun 
on a jenny. The expense of keeping a frame in repair, 
