CERTAIN IMPROVE- ¡MENTS. IN. LOOMS FOR WEAVING
Year: 1874

page_text: LETTERS PATENT to Hilton Greaves, of Oldham, in the County of
Lancaster, Manufacturer, for the Invention of "CERTAIN IMPROVE-
¡MENTS. IN. LOOMS FOR WEAVING."
Sealed the 2nd June 1874, and dated the 14th March 1874.
PROVISIONAL SPECIFICATION left by the said Hilton Greaves at the
Office of the Commissioners of Patents, with his Petition, on the
14th March 1874.
I, HILTON GREAVES, of Oldham, in the County of Lancaster, Manu-
facturer, do hereby declare the nature of the said Invention for "CERTAIN
'IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
t
The object of my Invention is to reverse the motion of the loom to
bring the crank shaft into the proper position for starting or for other
purpose; also to check the momentum of the lathe when the loom
knocks off, and it consists in certain improved combinations of machinery
to accomplish the same.
In performing my Invention I apply a bevel wheel to the loose pulley
the soul aheft Thin koval whool roars into another wheel mounted

page_text: on a friction pulley loose on the crank shaft, and this second wheel gears
into a third wheel fixed on the crank shaft. The friction pulley is
surrounded by a clip, on end of which is connected to a break lever
connected to a treadle.
When it is desired to reverse the motion of the loom the attendant
depresses the treadle, thereby tightening the break clip and stopping
the friction pulley. The wheel on the loose pulley then becomes the
driver, and causes the crank shaft to revolve in the contrary direction
until it is in the desired position, thereby releiving the attendant from a
very laborious operation, particularly in wide looms.
The break lever is acted upon by the knocking-off frog when the
shuttle fails to enter the box, thereby causing the break to check the
momentum of the lathe.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Hilton Greaves in the Great Seal Patent Office on
the 12th September 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HILTON
GREAVES, of Oldham, in the County of Lancaster, Manufacturer, send
greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourteenth day of March, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Hilton Greaves, Her special
licence that I, the said Hilton Greaves, my executors, administrators,
and assigns, or such others as I, the said Hilton Greaves, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "CERTAIN IMPROVEMENTS IN
LOOMS FOR WEAVING," upon the condition (amongst others) that I, the

page_text: said Hilton Greaves, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention; and
in what manner the same. was to be performed, and cause the same to
be filed in the Great Seal Patent' Office within six calendar months
next and immediately after the date of the said Letters Patent..
NOW KNOW YE, that I, the said Hilton Greaves, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement (that is to say) :-
The object of my Invention is to reverse the motion of the loom to
bring the crank shaft into the proper position for starting or for other
purpose, and it consists in certain improved combinations of machinery
to accomplish the same.
In performing my Invention I apply a bevel wheel to the loose pulley
on the crank shaft. This bevel wheel gears into another bevel wheel
mounted on a friction pulley loose on the crank shaft, and this second
wheel gears into a third wheel fixed on the crank shaft. The friction
pulley is surrounded by a clip connected to a break lever connected to a
treadle....
When it is desired to reverse the motion of the loom the attendant
depresses the treadle, thereby tightening the break clip and stopping the
friction pulley. The wheel on the loose pulley then becomes the driver,
and causes the crank shaft to revolve in the contrary direction until it
is in the desired position, thereby relieving the attendant from a very
laborious operation, particularly in wide looms."
And in order that my Invention may be fully understood and readily
carried into operation, I will proceed to describe the accompanying
Sheet of Drawings, reference being had to the figures and letters marked
thereon:-
Fig. 1 is an end view, and Fig. 2 a front view of one end of an
ordinary power loom to which my improvements are applied. ȧ is the
crank shaft; b, the driving pulley; and c, the loose pulley, to which is
cast or fixed the bevel wheel d. This bevel wheel d gears into the
pinion e, the axle of which revolves in bearings forming part of the
friction pulley f, which is also loose on the crank shaft a. The bevel

page_text: wheel e gears into the wheel g, which is keyed on the crank shaft. The
friction pulley f is surrounded by the break or friction clip h, the ends
of which are connected to the lever i mounted on the fulcrum stud j.
The lever is connected to the lever by the link 7, and the lever k is
fixed to the end of the shaft m, which extends from one loom side to i
the other. The shaft m supports the treadle n, which extends the length
of the room, so that the attendant can depress the treadle when standing
at any part of the loom.
:
When the loom is at work the driving strap is on the driving pulley b,
and the wheel then drives the wheel d and loose pulley c in the 1
contrary direction to the crank shaft, but when it is desired to reverse
the motion of the loom the driving strap is brought on to the loose
pulley c, and the attendant depresses the treadle a, thereby tightening
the break clip h and stopping the friction pulley f. The wheel & then
becomes the driver, and causes the crank shaft to revolve in the contrary 1
direction to that in which it revolves when the loom is weaving until it
is in the desired position or until the broken weft. is found. By this
means the attendant is relieved from the laborious operation of turning
the loom back.by hand.
I wish to remark that my Invention may be modified by the use of 2
spur gearing or friction pulleys in lieu of the bevel wheels marked d, e,
and g.
'
Having thus stated the nature of my Invention and described a con-
"venient mode of performing the same, I declare that I claim the
machinery shewn and described or any modification of the same for a
reversing the motion of the loom.
In witness whereof, I, the said Hilton Greaves, have hereto set
my hand and seal, this Eleventh day of September, One thousand
eight hundred and seventy-four.