IMPROVE- MENTS IN SCREW GILL BOXES OR HACKLE FRAMES."
Year: 1866

page_text: LETTERS PATENT to Benjamin Berry, the younger, and George Bromley,
both of Bradford, in the County of York, for the Invention of "IMPROVE-
MENTS IN SCREW GILL BOXES OR HACKLE FRAMES."
PROVISIONAL SPECIFICATION left by the said Benjamin. Berry and
George Bromley at the Office of the Commissioners of Patents, with
their Petition, on the 23rd March 1866.
We, BENJAMIN BERRY, the younger, and GEORGE BROMLEY, both of Bradford,
in the County of York, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN SCREW GILL BOXES OR HACKLE FRAMES," to be as
follows:-
The object of our Invention is to diminish the wear and tear of the gill
bars or fallers in screw gill boxes or hackle frames, as well as to diminish the
> noise made in working. For this purpose on the end of the shaft by means
of which the screws are worked we place a tappet or eccentric; this tappet
on every revolution of the shaft strikes a table secured to the shorter arm of a
lever placed in a horizontal position and working upon a "swinging fulcrum,"
that is to say, upon a fulcrum connected or secured to a vertical arm swinging
upon a horizontal stud, which in turn is secured to an adjustable vertical

page_text: bracket connected to a lower horizontal arm bolted to the framework. The
longer arm of the lever actuated by the tappet before named extends to the
delivering end of the screws or worms. A vertical or upright table is secured
to the same, the height of such table together with the position of the tappet
being so adjusted as to receive the end of the gill bars or fallers when ready
to drop, and gently lower the same into the underneath worm or screw.
When mitre wheels are not used for actuating the worms or screws the
tappet or eccentric works upon an independent stud, being driven from the
transverse or driving shaft.. Of course each side of the screw gill or hackle
frame is furnished with the above arrangement, and much wear and tear
prevented.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Benjamin Berry and, George Bromley [in the Great Seal
Patent Office on the 22nd September 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, BENJAMIN
BERRY, the younger, and GEORGE BROMLEY, both of Bradford, in the County
of York, 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 sixty-six, in the twenty-ninth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
Benjamin Berry, junior, and George. Bromley, Her special licence that we,
the said Benjamin Berry, junior, and George Bromley, our executors, adminis-
trators, and assigns, or such others as we, the. said Benjamin, Berry, junior,
and George Bromley, our 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
SCREW GILL BOXES OR HACKLE FRAMES," upon the condition (amongst others)
that we, the said Benjamin Berry, junior, and George Bromley, our executors
or administrators, by an instrument in writing under our or their hands and
seals, or under the hand and seal of one of us or them, 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.

page_text: NOW KNOW YE, that I, the said Benjamin Berry, junior, on behalf of
'myself and the said George Bromley, do hereby declare the nature of the
said Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement
thereof, that is to say :-
"
The object of our Invention is to diminish the wear and tear of the gills in
screw gill boxes or hackle frames, as well as to diminish the noise made in
working. For this purpose on the shaft by means of which the screws arè
worked we place a tappet or excentric; this tappet or eccentric on every
revolution of the shaft strikes a table secured to the shorter arm of å lever
placed in a horizontal position and working upon a "swinging fulcrum," that
is to say, upon a fulcrum connected or secured to a vertical arm swinging
'upon a horizontal stud, which in turn is secured to an adjustable vertical
bracket connected to a lower horizontal arm bolted to the framework. The
longer arm of the lever actuated by the tappet or eccentric before named
extends to the delivering end of the screws or worms. A vertical or upright
table is secured to the same, the height of such table: together with the
position of the tappet or eccentric being so adjusted as to receive the end of
the gill bars or fallers when ready to drop, and gently lower the same into the
underneath worms or screws. When mitre wheels are not used for actuating
the worms or screws the tappet or eccentric works upon an independant-stud?
being driven by means of spur gearing from the transverse or driving shaft.
Of course each side of the screw gill or hackle frame is furnished with the
above arrangement, and much wear and tear prevented. Or we effect our
object by the use of a scroll keyed on a vertical shaft actuated by means of
bevel or mitre gear from the transverse shaft, such scroll imparting through'
the shorter arm the requisite motion to the swinging lever.
.
In order, however, that our Invention may be the better understood,
reference is made to the accompanying Sheet of Drawings, and to the letters
and figures marked thereon, similar letters representing. similar parts on the
various Figures, that is to say
DESCRIPTION OF THE DRAWINGS.
1.7
Figure 1 is a sectional elevation of an ordinary gill or hackle box-shewing our
Invention (in red lines) applied thereto; Figure 2 is a plan of the Invention
or motion; Figure 3 is an elevation of the motion; Figure 4 shows our motion
with the sonall instead of the tonnet motion

page_text: brackets the whole of our motion or Invention is sustained. Letters E shew
vertical brackets secured to brackets. C, C, and furnished with studs e, e, to
adapt them to carry the swinging arms F, F;, to these again at f are secured
the side levers G, G, connected together for the purpose of strength and the
convenience of communication by means of the tongue 9 with the tappet
table H, which receives a reciprocating motion from the tappet g' keyed on to
the stud shaft g, and in turn actuated through the pinions h, h, by the
ordinary transverse shaft x of the machine. The letters i, i, shew the vertical
tables, or what we term "receivers and retarders," bolted to the end of the
jonger arms of the side levers G; the bracket D sustains the stud brackets d, d.
The position of the tappet 9 having been properly adjusted at the time when
a gill or hackle is about to fall from the upper to the lower set of screws or
worms, instead of falling, as is usually the case, with great violence, to the
serious addition of the wear and tear of the machine, it falls gently on to the
"receivers and retarders" i, i, which are themselves descending in consequence
of the retreating motion imparted by the side levers G, G, connected to the
vertical levers F, F, and actuated, as before explained, by the tappet g! through
the tappet table H, which is secured by a stud to the tongue g. The gill or
hackle having been deposited in the lower worms or screws the tables i, i,
ascend and the process is repeated, the speed being. regulated so as to receive
each gill or hackle as it is on the point of falling.
Having now fully described the nature of our Invention, and in what
manner the same may be performed, we wish it to be understood that without
confining ourselves to the precise mechanical details shown and described,
we claim the method so shown of diminishing the friction and therefore the
wear and tear of screw gills or hackles when falling from the upper to the
lower worms or screws, or any substantially mechanical equivalent thereof.
In witness whereof, I, the said Benjamin Berry, junior, have hereunto
set my hand and seal, this Twentieth day of September, in the year
of our Lord One thousand eight hundred and sixty-six.
Witness,
PHILIP H. SHARP,
18, East Parade,
Leeds.
BENJAMIN, BERRY, JUN³. (L.S.)