IMPROVEMENTS IN MACHINERY AND APPARATUS APPLICABLE TO FRAMES EMPLOYED IN MANU- FACTURING LOOPED FABRICS
Year: 1876

page_text: LETTERS PATENT to Thomas Mawby, of the Town of Leicester, in the County
of Leicester, Hosiery Manufacturer, for the Invention of "IMPROVEMENTS IN
MACHINERY AND APPARATUS APPLICABLE TO FRAMES EMPLOYED IN MANU-
FACTURING LOOPED FABRICS."
Scaled the 11th July 1876, and dated the 27th. April 1876.
PROVISIONAL SPECIFICATION left by the said Thomas Mawby at the Office
of the Commissioners of Patents on the 27th April 1876.
THOMAS MAWBY, of the Town of Leicester, in the County of Leicester, Hosiery
Manufacturer. "IMPROVEMENTS IN MACHINERY AND APPARATUS APPLICABLE TO
FRAMES EMPLOYED IN MANUFACTURING LOOPED FABRICS."
At or near each end of either a hand or rotary frame employed in manufacturing
looped fabrics I secure a bracket, in or upon which the outer ends of a bar slides
towards and from the needles of the frame, this bar carries two or more thread
guide bars, capable of being racked to the right or left by a lever operated by the
hand of the workman or by a cam movement, and in place of some of the single
nebbed sinkers usually employed I substitute some double nebbed sinkers to form
loops of the threads fed to the needles of the frame by the thread guides in the
bars above named, such loops lying behind the loops formed by the ordinary
sinkers and the front nebs of the double nebbed sinkers of the threads supplied by
the usual thread guides, the rest of the frame is of the usual construction. By
means of apparatus constructed and employed as above described I am enabled
to throw loops of thread or threads of various colours on to the face of the fabrics
produced.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Thomas Mawby in the Great Seal Patent Office on the 20th October 1876.
THOMAS MAWBY, of the Town of Leicester, in the County of Leicester, Hosiery
Manufacturer. "IMPROVEMENTS IN MACHINERY AND APPARATUS APPLICABLE TO
FRAMES EMPLOYED IN MANUFACTURING LOOPED FABRICS."
[Price Bd I

page_text: At or near each end of either a hand or rotary frame employed in manufacturing
looped fabrics I secure a bracket, in or upon which the outer ends of a bar slides
towards and from the needles of the frame, this bar carries two or more thread
guide bars capable of being racked to the right or left by a lever operated by the
hand of the workman or by a cam movement, and in place of some of the single
nebbed sinkers usually employed I substitute some double nebbed sinkers to form
loops of the threads fed to the needles of the frame by the thread guides in the bars
above named, such loop lying behind the loops formed by the ordinary sinkers, and
the front nebs of the double nebbed sinkers of the thread supplied by the usual
thread guides, the rest of the frame is of the usual construction. By means of
apparatus constructed and employed as above described I am enabled to throw
loops of thread or threads of various colours on to the face of the fabrics produced.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a sectional view of my improved machine attached to a hand or
rotary frame of the usual construction, a sufficient portion of such frame being
shewn as will suffice to explain my Invention. Figure 2 is a plan of an improved
machine having two guide bars. Figure 3 a front view of the same, in both
Figures only a portion of the carrying brackets A are shewn. Figure 4 is a plan
of one of the thread guide bars shewn separately. Figure 5 is a side view of one
of the single nebbed sinkers usually employed, and Figure 0 a side view of one of
the double nebbed sinkers employed in conjunction therewith.
At or near each end of either a hand or rotary frame employed in manufacturing
looped fabrics I secure a bracket A, in or upon which studs on the outer ends of a
bar B slide towards or from the needles of the frame, this bar carries two or more
thread guide bars C, to each of which are secured leads carrying thread guides C',
each guide is supplied with a thread from a separate cop C², or the whole of the
guides in each separate bar may be supplied from a warp beam, in which case
employ as many warp beams as there are guide bars. Two of the guide bars are
capable of being racked to the right or left by a lever E, operated by the hand
of the workman, this lever is notched at its upper end, a spring El secured to the
front of the bar B lies in one or other of the notches, and firmly holds the guide
bars in the position they are placed, the bars being connected to the lever by links
E2, E3, when only two guide bars are employed, the link E is slotted where it is
connected to the lower bar to allow of its being readily disconnected to enable the
workman to throw one or both bars to the right and draw it or them towards him,
in order that the guides may clear the heads of the needles at such time as the
guides of the upper bar are inserting their threads in a vertical position on the face
of the fabric, when both bars are operating together, the workman after working
one course moves the handle E so as to rack the guides of both bars towards or
from each other, according to the pattern required, the guide bar or bars which are
required to be drawn towards the workman when making a vertical rim with the
threads of the upper bar are recessed on their outer edge, as shewn in plan at
Figure 4, and where each vertical rim of a thread is required I substitute a double
nebbed sinker for one of the single nebbed sinkers usually employed, such double
nebbed sinkers form loops of the threads fed to the needles of the frame by the
thread guides C¹, such loops lie behind the loops formed by the ordinary sinkers,
and the front nebs of the double nebbed sinkers of the threads supplied by the
usual thread guides F. The machine besides sliding at each end upon the brackets A
is also suspended from the arms which carry the presser bar usually employed by
springs hooked upon them, and on each end of the bar B. There are brackets
secured to the under side of the bar B, each carrying a pin on which the front end
of a link H is placed, the back end of each link being hooked on to studs secured to
the bottom of the jack bar, this arrangement keeps the machine in the proper
position for the passage of the thread guides C' between the needles. These threads
are lapped from left to right over the needles, a cain bit L seen in plan, and a

page_text: front view respectively, at Figures 2 and 3, is screwed to the right bracket A, the
adjustable set screw shewn at the right end of the bar B striking against the cam
bit always ensures the clear passage of the guides C between the needles. The
threads from [the cops or warp beams after being passed over rods or rollers C³ are
passed under weighted wires C, then over a roller C³ before being passed through
the guides C, the passage of the guides up between the needles is effected by the
workman by means of the handle D, while the guides are above the needles, the
workman traverses the guides over one needle to the right or left by the hand
lever E, the guides are then lowered through the needles and the course is com-
pleted in the usual way. Above the top guide bar there are three slotted slides I,
the inner-ends of which carry a bar J, which is held in the position shewn at
Figures 1 and 2, by two elastic springs K until placed by the workman below the
needles, who then presses it forward so as to hold the threads from the guides C¹
back while the jacks are drawn.
By means of a machine constructed and employed as above described I am
enabled to throw loops of thread or threads of various colours on to the face of the
fabrics produced.
In witness whereof, I, the said Thomas Mawby, have hereunto set my hand
and seal, this Seventeenth day of October, in the year of our Lord
One thousand eight hundred and seventy-six
Witness,
H. W. GOUGH, C.E.,
Nottingham.
THOMAS MAWBY. (L.S.)