IMPROVE- MENTS IN BOBBIN NET OR TWIST LAGE MACHINES
Year: 1873

page_text: LETTERS PATENT to James Hancock, of the Town and County of the
Town of Nottingham, Machinist, for the Invention of "IMPROVE-
MENTS IN BOBBIN NET OR TWIST LAGE MACHINES.”
Sealed the 6th February 1874, and dated the 11th August 1873.
PROVISIONAL SPECIFICATION left by the said James Hancock at
the Office of the Commissioners of Patents, with his Petition, on
the 11th August 1878.
I, JAMES HANCOCk, of the Town and County of the Town of Notting.
5 ham, Machinist, do hereby declare the nature of the said Invention
for "IMPROVEMENTS.. IN. BOBBIN NET OR TWIST LACE MACHINES,” to be as
follows:-
My improvements consist,-
Firstly. In constructing a machine as follows:-There are two end
O standards and a back stay which are connected at or near the floor level
by a floor plate, thereby dispensing with the front and back rails hereto-
fore employed; the top of the standards are connected by a tie bar.

page_text: •
To the under side of the tie bar are secured brackets which form
bearings for two draw shafts, a cam shaft, and the axles of the knocking
out levers, which are connected to the point bars. The two central
brackets are secured to the upper end of the back stay. There
is a projection on the front of the floor plate to which a central
vertical stay is secured; the said stay supports a bearing for the driving
shaft, and also the front end of a cradle which is connected at its other
end to the back stay. The draw shafts carry counterballanced levers
connected to the links which operate the landing bars. The adjacent
ends of each draw shaft also carry levers connected by links; the back
levers at each end of the machine are connected to rods operated by the
driving shaft. The point bars are operated as follows:-Each point bar
arm carries an adjustable bearing at its upper end; an axle is passed
through this bearing and also through a truck operated by a cam on the
cam shaft; the axle of the bearing and truck is held by a double ended
bracket which is carried by and rocks upon the back or front draw shaft.
The point bars are of the form of one-half of a square in section with
the longest side, facing outwards; the inner side is grooved to receive
the shoulders of the point leads. The catch bars are carried on and by
the landing bars and are operated in the usual way.
A machine constructed as above described constitutes one modification
of my improvements.
A second modification consists of a machine constructed as above
described, but without the landing bars and their connections, and the
draw shafts carry levers, the ends of which form bearings for shafts
to which arms are secured, which arms carry the axles of the catch
bars. The end arms are hinged to levers which rock on the joint pins,
and the draw shafts have independant levers at each end carrying con-
connecting rods moved by oscillating disks operated by connecting rods
at the front of the machine.
A third improvement consists in hinging one or both comb bars to
suitable bearings, so that the workman is enabled to turn the bars out-
wards and down for his convenience at pleasure.
A fourth improvement consists in inserting bearings of iron or brass
between the bottom of the combs and the comb leads previous to
rasting

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Hancock in the Great Seal Patent Office
on the 10th February 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
HANCOCK, of the Town and County of the Town of Nottingham,
Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent; bearing date the Eleventh day of August, in the year
of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said James Hancock, Her special
licence that I, the said James Hancock, my executors, administrators,
and assigns, or such others as I, the said James Hancock, 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 "IMPROVEMENTS IN
BOBBIN NET OR TWIST LACE MACHINES," upon the condition (amongst others)
that I, the said James Hancock, 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 Hancock, 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.
My improvements consist-
First. In constructing, a machine as follows:-There are two end
standards and a back stay which are connected at or near the floor level
by a floor plate, thereby dispensing with the front and back rails þepato-

page_text: 4
fore employed; the top of the standards are connected by a tie bar.
To the under side of the tie bar are secured brackets which form
bearings for two draw shafts, a cam shaft, and the axles of the knocking
out levers which are connected to the point bars. The two central
brackets are secured to the upper end of the back stay. There is a
projection on the front of the floor plate to which a central vertical
stay is secured; the said stay supports a bearing for the driving shaft,
and also the front end of a cradle which is connected at its other
end to the back stay. The draw shafts carry counterbalanced lovers
connected to the links which operate the landing bars. The adjacent
ends of each draw shaft also carries levers connected by links; the back
levers at each end of the machine are connected to rods operated by the
driving shaft. The point bars are operated as follows:-Each point bar
arm carries an adjustable bearing at its upper end; an axle is passed
through this bearing and also through a truck operated by a cam on the
cam shaft; the axle of the bearing and truck is held by a double ended
bracket which is carried by and rocks upon the back or front draw shaft.
The point bars are of the form of one-half of a square in section, with
the longest side facing outwards; the inner side is grooved to receive
the shoulders of the point leads. The catch bars are carried on and by
the landing bars and are operated in the usual way.
A machine constructed as above described constitutes one modification
of my improvements.
A second modification consists of a machine constructed as above
described, but without the landing bars and their connections, and the
draw shafts carry levers, the ends of which form bearings for shafts, to
which arms are secured, which arms carry the axles of the catch bars.
The end arms are hinged to levers which rock on the joint pins, and the
draw shafts have independant levers at each end, carrying connecting
rods, moved by oscillating discs operated by connecting rods, at the front
of the machine.
A third improvement consists in hinging one or both comb bars to
suitable bearings so that the workman is enabled to turn the bars out-
wards and down for his convenience at pleasure.
A fourth improvement consists in inserting bearings of iron or brass
between the bottom of the combs and the comb leads previous to

page_text: Figure 1 is a sectional view of the machine on the lines A², A¹,
Figure 8; Figure 2 represents a front view of the left end of the
machine; Figure 8, the central portion; and Figure 4, the right end of
the machine shewing the vertical shaft carrying toothed bevel wheels
gearing into similar wheels on the driving shaft and cam shaft.
Figure 5 is a side view of the cams which communicate motion to the
several parts.
-
In carrying out my Invention I construct a machine as follows :-
There are two end standards A, A, and a back stay B which are con-
nected at or near the floor level by a floor plate O, thereby dispensing
with the front and back rails heretofore employed. The top of the
standards are connected by a tie bar D; to the under side of the tie bar
are secured brackets E which form bearings for two draw shafts F, F,
a cam shaft G, and the axles H of the knocking out levers H³, which
are connected to the point bars. The two central brackets are secured
to the upper end of the back stay; the lower end of the back stay is
attached to a bar screwed to the floor plate O which has a projection on
the front to which a central vertical stay I is secured; the said stay
supports a bearing for the driving shaft K, and also the front end of a
cradle L, which is connected at its other end to the back stay. The
draw shafts carry counterbalanced levers F' connected to the links
which operate the landing bars. The adjacent ends of each draw shaft
also carry levers connected by links F"; the back levers at each end of
the machine are connected to rods F³, operated by crank axles on the
driving shaft. The point bars are operated as follows:-Each point bar
arm M carries an adjustable bearing at its upper end; an axle is passed
through this bearing and also through a truck operated by a cam on the
cam shaft. The axle of the bearing and truck are held by a double
ended bracket or lever N, which is carried by and rocks upon the back
draw shaft; the said brackets may be placed on the the front draw shaft.
The point bars O are of the form of about one-half a square in section,
with the longest side facing outwards, the inner side is grooved to receive
the shoulders of the point leads. The catch bars are carried on and
by the landing bars and are operated in the usual way.

page_text: Having now described the nature of the Invention and the manner
of performing the same, I declare that I claim,-
First. The general arrangement and combination of a twist lace
machine constructed as herein-before described and illustrated in the
Drawings annexed.
Second. For one or more pair of brackets E which support the
axles of the knocking out levers, the two draw shafts, and the cam
shaft, and for the double ended brackets or levers N carrying the arms,
blocks, and trucks, which operate the point bars.
Third. The central longitudinal plate C, connecting the end standards, :
and to which the front vertical stay, cradle, and back stay are secured.
In witness whereof, I, the said James Hancock, havo hereunto
set
my hand and seal, this Ninth day of February, in the year
of our Lord One thousand eight hundred and seventy-four.
Witness,
H. W. GOUGH, C.E.,
Nottingham.
JAMES HANCOCK. (L.S.)