Improvements in Twist Lace Machines.
Year: 1893

page_text: Date of Application, 13th May, 1893
Complete Specification Left, 13th Mar., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Twist Lace Machines.
I, EDWARD COPE, of New Basford, Nottingham, Lace Manufacturer, do
hereby declare the nature of this invention to be as follows:-
:―
According to this invention the necessary intermittent movements of the various
parts of this machine are obtained directly from a number of shafts arranged in
a circle around a single central shaft from which they are driven by intermittent
gearing. Thus the catch bars operating the carriages are driven by links from
cranks on a pair of opposite shafts. The up and down motion is given to the point
bars by dinks from cranks on another pair of opposite shafts, whilst their to and fro
motion is given by links from cranks on a third pair of shafts. Cams on the
shafts may be substituted for the cranks. The same intermittently driven shaft is
in some cases used for giving a motion to two different parts. This invention
is equally applicable to levers or to "go through " machines. To give motion
to the catchbars when working on the levers or "go through principle
I employ concentric circular segments suitably mounted to carry trucks or slides
to cause the catchbars and blades to take in or release the carriages as desired.
The necessary motion for taking and releasing is given by a cam or otherwise.
Dated this 12th day of May 1893.
COMPLETE SPECIFICATION.
Improvements in Twist Lace Machines.
I, EDWARD COPE, of New Basford, Nottingham, Lace Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
According to this invention the necessary intermittent movements of the various
parts of this machine are obtained directly from a number of shafts arranged in a
circle around a single central shaft from which they are driven by intermittent
gearing. Thus the catch bars operating the carriages are driven by links from
cranks on a pair of opposite shafts. The up and down motion is given to the
point bars by links from cranks on another pair of opposite shafts, whilst their
to and fro motion is given by links from cranks on a third pair of shafts. Cams
on the shafts may be substituted for the cranks. The same intermittently driven
shaft is in some cases used for giving a motion to two different parts. This
invention is equally applicable to levers or to "go through
"machines. To give
motion to the catch bars when working on the levers or go through" principle
I employ concentric circular segments suitably mounted to carry trucks or slides
to cause the catch bars and blades to take in or release the carriages as desired.
The necessary motion for taking and releasing is given by a cam or otherwise.

page_text: A is the frame of the machine. B. are the comb bars fixed to the frame and
b are the combs. C is one of the carriages and c its bobbin. D are the catch bars
and E the point bars. F is a central shaft and G G H H are four shafts ranged
in a circle round it and driven from it (as shown in Figure 2) by intermittent
gearing such as is described in my Specification No. 8514 of the year 1893.
gghh are cranks on the shafts G and H. The cranks g are connected by rods g
to the ends of two bent levers J_whose other ends are pivotted at j to the frame of
the machine. The catch bars D are mounted on the ends of bell crank levers d
pivotted at d¹ to the bent levers J. The other ends of the bell crank levers d carry
trucks d working in circular slots in the levers K fixed on shafts k working in
bearings on the frame of the machine, or the ends of the bell crank levers d may
be pivotted to slides working in circular guides on the levers K. The levers K
are connected by a link k¹ and one of their shafts k has an arm k² fixed to it
connected by a rod L to a cam (not shown in the drawings) on the central shaft F.
It will thus be seen that as the bent levers J rock the necessary to and fro motion
is given to the catch bars D whilst they are caused to engage and disengage with
the carriages C by the action of the levers K on the tail ends of the bell crank
levers on which they are mounted or the levers K may be replaced by fixed arms
in which case the slots in them in place of being circular throughout would be of
the usual suitable form.
The point bars E are fixed to the ends of levers M whose other ends are pivotted
to arms n fixed to the rocking shafts N working in bearings on the frame of the
machine. The up and down motion is given to the point bars from the cranks h h
by the connecting rods h¹ h' and to and fro motion is given by the levers O having
their fulcrums at o and one end pivotted at o' to links O' (also pivotted at m to the
levers M) whilst their other ends carry trucks o² working against cams G¹ on
the shafts G.
The cams G' and levers O may be dispensed with and the to and fro motion be
obtained from a pair of shafts driven by intermittent gearing from the central
shaft F. This arrangement is shown in diagram at Figure 3 where P P are the
two shafts pp cranks upon them QQ connecting rods and R R arms fixed to
the rocking shafts N.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A twist lace machine in which the intermittent movements of the parts are
obtained directly from a number of shafts arranged around a single central shaft
and driven from it by intermittent gearing substantially as described.
2. The mechanism for working the catch bars substantially as described and
shown at Figure 1.
3. The mechanism for working the point bars substantially as described and
shown at Figures 1 and 3.
4. A twist lace machine substantially as described and shown in the drawings.
Dated this 13th day of March 1894.
CARPMAEL & Co.,
Agents for the Applicant.