Improvements in the Manufacture of Gill and Faller Bars.
Year: 1898

page_text: Date of Application, 30th Mar., 1898
Complete Specification Left, 13th Dec., 1898-Accepted, 28th Jan., 1899
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Gill and Faller Bars.
I, ABRAM COMBE, of the Firm of Combe, Barbour, and Combe, Limited, of
Falls Foundry, Belfast, Ireland, Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in the manufacture of push bar fallers
and in the attaching of gills thereto, and is specially applicable to push-bar
fallers and gills required for fine work.
In fine work the pins require to be of fine pitch. When the holes through
which the pins are inserted are drilled through the solid bars the degree of fine-
ness to which they can be put in the bar is limited to the number of holes per.
inch it is possible to put through the bar.
When the pins are placed in a gill stock and the stock is attached to the bars
by means of rivets, an ordinary flat surface is prepared on the bar to receive the
gill stock, the rivets which attach the gill stock to the bar having to withstand
the lateral pressure or pull on the pins and keep the stocks in position. This
necessitates the rivets through the bars being sufficiently strong for that purpose.
When the bars are fine the holes for these rivets weaken the bars.
I overcome these difficulties by cutting a groove in the solid faller bar, instead
of flattening the faller bar and inserting in this groove the gill stock in which
the pins are placed. The sides of the groove withstand the lateral pressure or
pull upon the pins, and therefor either a much smaller rivet may be used than
hitherto, or solder can be used to keep the gill in position as the rivet or solder
have merely to prevent the gill from rising out of the groove. Besides, the section
of bar left by merely having a groove cut in it instead of being flattened, is itself
stronger.
By this arrangement gills to any practical degree of fineness can be used and
fixed firmly in fine faller bars without unduly weakening the latter.
Dated th 20+1
1000
BRIERLEY & HOWARD,
Penny Bank Chambers, Halifax.
Improvements in the Manufacture of Gill and Faller Bars.
I, ABRAM COMBE, of the Firm of Combe, Barbour, and Combe, Limited, of
Falls Foundry, Belfast, Ireland, Engineer, do hereby declare the nature of this
nvention and in what manner the same is to be performed, to be particularly
lescribed and ascertained in and by the following statement: —
This invention relates to improvements in the manufacture of push bar fallers
nd in the attaching of gills thereto, and is specially applicable to push bar

page_text: fallers and gills required for fine work where of necessity the pins require to be
of fine pitch.
When the holes through which the pins are inserted are drilled through the
solid faller bars, the degree of fineness to which they can be put in the bar is
limited to the number of holes per inch it is possible to put through the bar.
Again when the pins are placed in a gill stock and the stock is attached to
the bars by means of rivets and an ordinary flat surface is prepared on the bar to
receive the gill stock, the rivets which attach the gill stock to the bar having to
withstand the lateral pressure or pull on the pins and keep the stocks in position
have of necessity to be made sufficiently strong for that purpose, and the holes
for these rivets sufficiently large to allow of strong rivets, so that when the bars
are fine the holes for the rivets weaken the bars. The invention consists in
inserting and fixing the gill stocks and pins in a groove formed in the solid
faller bar, so that the sides of the groove withstand the lateral pressure or pull
on the pins.
Such being the nature and object of my said invention, the following is a
complete description of same, reference being had to the annexed drawings, in
which:-
Fig. 1 is a plan view of part of a gill bar or faller bar constructed according to
this invention.
Fig. 2 is an end sectional view of Fig. 1.
Fig. 3 is a sectional end view of the bar or faller with the gill stocks and pins
removed.
According to this invention I overcome the above mentioned difficulties by
cutting a groove 1 in the solid bar 2 and inserting in this groove 1 the gill stock 3
in which the pins are fixed in the ordinary manner.
The sides of the groove 1 withstands the lateral pressure or pull on the pins
and therefore either a much smaller rivet 5 than heretofore may be used, or
solder can be used to keep the gill stock 3 in position, as the rivets 5, or solder,
have merely to prevent the gill stock from rising out of the groove 1. The section
of bar 2 left by merely having a groove 1 cut in it, instead of being flattened,
is itself stronger. By this arrangement gills of any practical degree of fineness
can be used and fixed firmly in fine faller bars 2 without unduly weakening the
latter.
The bars 2 may be strengthened at the points where the rivets 5 are employed,
if thought desirable, by merely making the bar of slightly larger diameter.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
(1) The improved gill bar or faller as and for the purpose herein described
and substantially as illustrated by the accompanying drawings.
(2) The bar 2 in which is the groove 1 to receive the gill stocks 3 which are
fixed therein by rivets or solder as herein described and substantially as illus-
trated by the annexed drawings.
Doted th 19th day of a 1000