IMPROVE- MENTS IN MACHINERY EMPLOYED IN THE MANUFACTURE OF BOBBIN NET OR TWIST LACE
Year: 1871

page_text: LETTERS PATENT to James Carver, of the Firm of Messieurs Carver
and Mosley, of "The Butcher Street Works," in the Town and
County of the Town of Nottingham, Bobbin and Carriage Manu-
facturers and Machine Builders, for the Invention of "IMPROVE-
MENTS IN MACHINERY EMPLOYED IN THE MANUFACTURE OF BOBBIN NET OR
TWIST LACE."
Sealed the 19th September 1871, and dated the 23rd March 1871.
PROVISIONAL SPECIFICATION left by the said James Carver at the
Office of the Commissioners of Patents, with his Petition, on the
23rd March 1871.
I, JAMES CARVER, of the Firm of Messieurs Carver and Mosley, of
"The Butcher Street Works," in the Town and County of the Town of
Nottingham, Bobbin and Carriage Manufacturers and Machine Builders,
do hereby declare the nature of the said Invention for " IMPROVEMENTS
IN MACHINERY EMPLOYED IN THE MANUFACTURE OF BOBBIN NET OR TWIST LACE,"
to be as follows:-

page_text: 8th June 1830, and 27 February 1835, two long moveable bars called
landing bars,, are employed, and also two other bars called catch bars,
which work in combination with cach other. These bars are moved by
crooked arms called goose necks, which are attached to a shaft called a
back or cradle shaft. These bars are of considerable weight, and they
not only impede the speed of the machine, but are expensive, and it is a
source of constant trouble to keep them well regulated, so as to make
good work and prevent the destruction of the carriages and bobbins of
which they are the movers.
Now my Invention consists in moving the carriages and bobbins by
means of tubes lying horizontally with the machine, and having strips
called catch bar blades attached to them to take hold of the carriages.
These tubes or bars are suspended by axles, the movement of which
lowers the catch bar blades into the carriages, and each end of them
being connected with a lever moved by a cam or equivalent, the tubes
or bars will be drawn out, and the carriages and bobbins with them.
By these means the machine is worked with greater case, more
quickly, and with less noise, and is constructed at much less cost than
heretofore.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Carver in the Great Seal Patent Office on
the 22nd September 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
CARVER, of the Firm of Messieurs Carver & Mosley, of the Butcher
Street Works, in the Town and County of the Town of Nottingham,
Bobbin and Carriage Manufacturers and Machine Builders, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of March in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said James Carver, Her special licence
that I, the said James Carver, my executors, administrators, and
assigns, or such others as I, the said James Carver, my executors,

page_text: 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 "IMPROVEMENTS
IN MACHINERY EMPLOYED IN THE MANUFACTURE OF BOBBIN NET OR TWIST
LACE," upon the condition (amongst others) that I, the said James
Carver, 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 James Carver, 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, reference being had to the accompanying Drawings,
forming a part of this Specification.
Heretofore in "Levers' " lace machines two long moveable bars, called
landing bars are employed, and also two other bars called catch bars,
which bars work in combination with each other. These bars are
moved by crooked arms called and known as goose necks, which are
attached to a shaft called a back or cradle shaft. These bars are of
great weight and they not only impede the speed of the machine, but
are expensive and a source of constant trouble to keep them well
regulated, so as to make good work and prevent the destruction of the
carriages and bobbins of which they are the movers.
Now my Invention' consists in moving the carriages and bobbins by
means of tubes made of steel or other metal or malleable material lying
horizontally with the machine, and having a strip of brass or other metal
or malleable substance, called catch bar blades attached thereto, to take
hold of the carriages. These tubes or bars are suspended by axles, the
movement of which lowers the catch bar blade into the carriages, and
each end of them being connected with a lever moved by a cam or
equivalent, will draw the bars or tubes out and the carriages and bobbins
with them. By these means the machine is worked easier, more quickly,
and with less noise, and is constructed at much less cost.

page_text: I
Figure 1 represents.a iront view of a portion of the left end or a twIST
lace machine constructed according to my improvements; and Figure 2
is a sectional view of the same machine looking towards the left end, a
portion of the left end standard is shown only at Figure 1.
My Invention consists in moving the carriages and bobbins B by
means of tubes C made of steel or other malleable material, these tubes
lie horizontally in the machine and are parallel to each other, each tube
carries a number of double footed brackets D each of which are secured
to the tube by screws passed through one of the feet, the other foot of
each bracket is attached by screws to a catch bar blade E formed of
brass or other metal or malleable substance to take hold of the carriages.
The tubes C are suspended by axles F at their ends, these axles are
carried by the inner ends of double ended brackets which are turned
down to form blocks or studs C¹ shown by dotted lines in Figure 1; upon
these studs the ends of the tubes C are shrunk so that each tube has a
double ended bracket at each end, the axles F project towards the end
standards and pass through and slide up and down in slotted levers G,
the portion of each axle which projects beyond the slotted lever carries
a double flanged truck G₁ which lies between the stem and arm of a
quadrant H which swings upon an axle secured in the end standard.
Each quadrant is held on its axle by a nut and washer H', and each
quadrant has a swinging motion. communicated to it by means of a
connecting link working upon an axle H³ in its lower end, the other
ends of the connecting links are each attached to and moved by cranks
near each end of the machine on the main driving shaft which is of the
usual construction. Each quadrant has a curved slot in each arm, in
each slot a block K slides, each block is flanged on the side nearest to
the centre of the machine and is pierced to receive an axle L, which is
secured in the outer end of each double ended bracket which also carries
the axle F; by this arrangement the catch bars are centred in the
blocks K by the axles L. The catch bars have rising and falling move-
ments communicated to them as follows:-The truck G₁ as the slotted
arm of the quadrant is lowered will run up the incline on to the broader
part of the arm, thus raising the catch bar clear out of the carriage arch,
in which position it will be held until the arm is brought back and

page_text: allows the truck to fall into the position shown in Figure 2, the rising
of the catch bar is also further ensured by the slotted arm G through
which the axle of the truck G¹ passes, moving inwards towards the centre
of the machine as the arm of the quadrant is lowered, thus raising the
lower end of the slotted arm and axle F and landing the truck G¹ on
the broadest portion of the quadrant arm, the reverse movement taking
place as the quadrant arm is raised. The quadrant is shown at the
centre of its throw, and as either arm is raised higher than shown, the
catch bar falls into the arch of the carriages and draws them into the
combs, the opposite catch bar being raised clear out of the arch of the
carriages to allow them to be so drawn; the arm of the quadrant having
risen to its highest point then commences to fall, during which move-
ment the upper end of a double ended driver M strikes the incline of cam
plate N causing the lower end to be moved clear of the block K which
it drove down so as to allow the block to slide in the slot of the arm of
the quadrant during the time the catch bar is held clear of the arch of
the carriages on the return movement; the driver falls on to the block as
its upper end rises above the incline of the cam plate N, being drawn in
by a spiral spring M¹. The slotted arms G move upon axles G* secured
in a bracket G³ fixed to the end standard. The combs are cast in leads
which are secured to the comb bars by screws in the usual way. The
comb bars which are of the usual construction are supported at each end
by bearing links T which are carried by axles T¹ adjustable in cross bars
secured to the front and back tie rails of the machine, the comb bars are
also held in the required position by brackets T secured to the said cross
bar. Exactly corresponding parts to the above described are placed at
each end of the machine between the end standards which carry them
or to which they are attached, each set making corresponding move-
ments at the same time. The front and back point bars carrying the
point leads P I operate in like manner, and by the same means as
described in the Specification of a Patent granted to me for " * Improve-
ments in Machinery employed in the Manufacture of Bobbin Net or
Twist Lace," dated the 22nd day of February 1871, and numbered 529.
The work bar 2 and the work roller Rare of the usual construction and
require no further description. Each quadrant has a third slot near its
lower end, this slot is to allow the top bars U to be passed through, and
is of greater depth than the width of the top bars which
may be
employed in the machine; the length of the slot is such as to fully

page_text: clear the bars at each front and back movement of the quadrant. By
constructing a machine in the manner above described I am enabled to
dispense with the following parts which have been heretofore used, that
is to say, the back or rocking shaft which operated the landing bars,
the bearings in which the said shaft rocked, the whole of the half jacks
and goose necks, feet, and other connections which were attached to the
shaft and landing bars, the two landing bars and their joints, the landing
bar, trucks, and the circle on which they moved, the feet at the centre
of the catch bars, the cams which operated the catch bars, and the
double ended levers and connections which heretofore lifted the catch
bars. A machine so constructed is worked easier, more quickly, and
with less noise.
Having now described the nature of the said Invention and in what
manner the same is to be performed, I declare that I claim,-
First. The employment of tubes of steel or other metal or malleable
material in constructing catch bars employed in bobbin net or twist
lace machines.
Secondly. The arrangement of parts or any modification thereof
herein-before described for actuating the same.
Witness,
H. W. GOUGH, C.E.
Nottingham.
JAMES CARVER. (L.S.)