Year: 1889

page_text: Date o Application, 21st Jan., 1889
Specification Accepted, 2nd Mar., 1889
1, EDWARD SAMUEL BOND of The Crown Engine and Machine Works, Lower
Hurst Street East, Birmingham in the County of Warwick, Engineer and Machinist,
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
£tatement :-
My invention has for its object improvements in machinery for manufacturing wire
netting and relates more particularly to the means of operating the plates and pinions
for twisting the wire which plates have hitherto received their motion by means of
the outside throw of an ordinary cam acting directly upon the plates. This arrange-
ment has necessitated stops or their equivalents being formed in connection with the
plates to prevent them travelling further than the required distance, which stops have
been the means of preventing the machines from being run at any great speed as the
vibration caused by the shock of the sudden stop of the plates has a tendency to throw
the half pinions out of gear with each other and thereby stop or damage the machine.
Now my improved machinery is very simple and I am therefore able without risk
to run the machines at, say, above twice the speed which has hitherto been possible.
This is of course a most important advantage as a machine having my improvements
can be utilized to do the same amount of work as two of the ordinary kind in the same
amount of time and with a saving in cost as well as in attendance and the space
occupied, while the netting is manufactured in a much more efficient manner by
reason of there being little or no vibration in the working of the machine, thus less
capital is required to produce the work.
My improvements further consist in the use of a rack in each half of the plates
instead of one in the one half thereby increasing the power of the pinions for twisting
stronger gauges of wire and at the same time also preventing the pinions from
slipping out of gear which is an important failing with the present machines.
Another portion of my invention consists in the support of the. plates by means of
the stretchers being provided with flanges which receive the plates thereby preventing
them from bending in the centre also keeping them trne on their edge and by these
means allowing the use of a machine of any length which may be required.
These improvements combined with the improved arrangements for the perfect
adjustment of the plates racks and various parts form a most cheap and compact
machine which is thoroughly effective in its working.

page_text: In order that my invention may be clearly understood and more easily carried into
practice I have appended hereunto four large-sized sheets of drawings upon which
I have illustrated enough of the ordinary parts of a wire netting machine to show
the application of my improvements thereto.
On Sheet 1.
Figure 1 is an elevation of the back of the two ends of the machine the centre
portions being broken away as the centre only shows the portions now in use and known
to the trade.
On Sheet 2.
Figure 2 is an elevation of the one end of the machine having the driving puines
Figure 10 is a plan of the adjustable pivoted arms B for operating the plates_C.
Figure 1 is an elevation of same shewing-a-portion of the vertical shaft K upon
which they are fixed.
Figure 12 is an enlarged plan of the connections between the arms B and plates C.
Figure 13 is an elevation of same.
Figure 14 is an enlarged plan of the adjustable attachment to the plates C.
Figure-15 is an elevation of same.
Figure 16 is an enlarged section through the end long half pinion showing the
teeth necessary to be cut away for the purpose of using double racks.
Figure 17 is an elevation of same.
Figure 18 is a plan of the ends of the plates shewing a modified method of
operating samo.
The plates Cracks D and pinions E are similar to those in the ordinary wire
netting machines and operate upon the wire in a similar manner i.e. the one half of
the plates slide horizontally backwards and forwards in the reverse direction to the
other half which also slide back wards and forwards so that the half pinions E through
which the wire passes are constantly changing their position with regard to each
other and as they are also operated upon at the same time by the rack D engaging in
the teeth e which are formed around the pinions E they revolve when opposite each
other and thereby form the twist. My improvements relate first to the operation of
the plates C so as to obviate the use of stops to the plates which I effect as follows:-
I mount the disc A upon any convenient part of the machine but preferably upon
the brackets A and A2 which may be cast in one with the end Z of the machine.
The disc A is formed as a bevel wheel so as to engage and receive its motion from the
bevel wheel F on the main shaft F. Upon the face of the disc the internal cam or
groove a is formed which actuates the roller or stud h¹ on the lever H which as it
rises and falls slightly revolves the small shaft H' in the bearings h* and * and by
means of the toothed segment H³ engaging with the toothed segment K¹ the vertical
shaft K revolves in the bearings and which are formed on the end frame Z of
the machine. The cross arms B are fixed to the bottom and top of this shaft and are
connected to the upper and lower plates C by means of the link M shewn by
Figures 12 and 13 and attachment N shewn by Figures 14 and 15 thereby operating
the plates C in the reverse direction to each other as required.
To prevent the slightest spring or vibration occuring to throw the plates out of

page_text: position 1 provide the stops H* and H to the lever H which may be adjusted to meet
it at the extremes of the stroke thereby locking the lever between the stops and the
edge of the groove a³.
I do not confine myself to the particular position of the internal cam and disc A as
I may place it horizontally in which case the connection with the shaft K would be
direct. It will also be obvious that the plates C may be operated with a similar
effect, by a double eccentric or the two eccentrics R mounted upon the shaft R' as
shewn in Figure 18. To allow of the most perfect adjustment of the plates C with
regard to each other the arrangement shown by Figures 10 and 11 is provided, the
arms B having the slot 6 in which the loose pieces 6 are inserted, these pieces b' are
provided with the inclined projections & which butt against similar inclines formed in
the side of the slots 6 in the arms. The set screws are provided for adjusting the
position of the loose pieces and Figure 10 shows on each side of the arm the
difference in the position of the pin & at the two extremes of adjustment.
Further adjustment may be obtained by the arrangement shewn by N Figures 14
and 15 which is for the purpose of attaching the links M to the plates C, the pin n' to
which the link M is secured being made to move in the slot n² and is afterwards
firmly secured in position by the set screws n³ and this arrangement is also used for
the adjustment of the racks D.
.
The racks D are operated at the reverse end of the machine and from the other side
of the disc A by means of the connecting rod D' which is connected to the vertical
shaft O and in turn to the racks D by the arms P and smaller connecting rods P³¹ in a
similar way to the operation of the platos C but in oporating both of the racks D
backwards & forwards as shewn instead of only one as hithertofore it will readily
be been that as the half pinions E alter their relative positions with regard to each
other at each stroke of the racks, and that the end halves e² or eat eacli stroke have
no corresponding half pinion opposite to them to allow them to revolve they cannot
when in such position be actuated by the movement of the rack but the independant
movement of the rack is allowed by means of cutting away the two teeth e of the
long half pinion e² at one end and the short half pinion es at the other end as shewn
by dotted lines in Figure 16 which allow the racks D to move independently when
those half pinions are not able to revolve by reason of being in the solid part of the
plate as seen by e Figure 4 but immediately the half pinion e returns opposite the
next half of the pinion it forms a circle in which it can and does revolve by means
of the other half which is provided with teeth and is actuated by the other rack D.
By these means I am enabled to work the pinions E with double racks thereby
obtaining increased strength for the manipulation of a thicker strand of wire but
do not confine myself to using any particular number of racks either in the upper or
lower parts or this particular mode of operating the racks in combination with the
other parts of my invention. The arms P are provided with the slots p² for the
further adjustment of the racks.
My improvements relate further to the construction of the stretchers T for connect-.
ing the ends of the machine together which I provide with the flange S for the
purpose of supporting the plates C and preventing them from bending in the centre
the-stretchers T each side the plates by this means forming a trough in which the
plates slide thereby enabling me to make the machine of any desired length without
fear of the plates swagging which at the same time keeps the plates true on their
edge thereby ensuring the free and easy working of the pinions E.
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:-
First: In improvements in machinery for manufacturing wire netting the operation
of the plates C by means of the internal cam a³ or its equivalent substantially as and
for the purpose herein set forth and shewn upon the drawings.
Second: In wire netting machines the operation of the pinions E by means of a
rack in each half of the plates in combination with the removal of part of the teeth of

page_text: the end half pinions and e substantially as and for the purpose herein set forth and
shewn by Figures 4, 16 and 17.
Third: In wire netting machines the flange S on the stretcher T substantially as
and for the purpose herein set forth and illustrated by Figures 6, 7, 8 and 9.
Fourth In wire netting machinery the means of conveying the motion from the
internal cam a to the plates C by the lever H, shaft H2, toothed segments H³ and K¹
and vertical shaft K, substantially as herein set forth and shewn upon the drawings.
Fifth In wire netting machinery the means for correctly adjusting the position of
the plates C with regard to each other substantially as herein set forth and shewn by
Figures 10 and 11.
•
Sixth In wire netting machinery the mode of adjusting the positions of the
plates C and racks D by means of the attachment N substantially as herein set forth
and shewn by Figures 14 and 15.
Seventh In wire netting machines the combination of the bevel wheel and cam
disc substantially as herein set forth and shown upon the drawings.
Eighth The improvements in machinery for manufacturing wire netting sub-
stantially as herein set forth and shewn upon the accompanying drawings.
Dated this 19th day of January 1889
GEORGE BARKER,
77, Colmore Row, Birmingham,
Agent for Applicant.