IMPROVEMENTS IN DOBBIES FOR LOOMS to be as follows :-
Year: 1884

page_text: We WILLIAM BUTTERWORTH Cloth Manufacturer Lower Mill, Holmfirth, in the
County of York, and JOHN BOOTH of Lower Mill aforesaid, Loom Tuner do hereby
declare the nature of our said invention for "IMPROVEMENTS IN DOBBIES FOR
LOOMS to be as follows :-
"
-:
The object of this invention is to keep the knives in Dobbies clear of each other
so that when working the knife actuated by the peg or pattern mechanism is
raised ready for the draw bar without raising the one next to it, that is to say,
two knives cannot catch or be operated jointly or together unless indicated by the
peg or pattern mechanism.
For purpose aforesaid I employ in combination with the upper knives a grate or
comb through which the knives pass and by which they are separated and guided
in their to and fro motion a like grate or comb being used in connection with the
lower knives the said grates or combs are attached at their ends to the side frames
of the Dobby.
WALTER BRIERLEY,
Crossley Street, Halifax,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
"
We WILLIAM BUTTERWORTH, Cloth Manufacturer, Lower Mill, Holmfirtb, in the
County of York, and JOHN BOOTH of Lower Mill aforesaid, Loom Tuner, do hereby
declare the nature of our said invention for IMPROVEMENTS IN DOBBIES FOR
LOOMS " and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement: -—
The object of this invention is to keep the knives in Dobbies clear of each other
so that when working the knife actuated by the peg or pattern mechanism is
raised ready for the draw bar without raising the one next to it, that is to say,
two knives cannot catch or be operated jointly or together unless indicated by the
peg or pattern imechanism.
Such being the nature and object of our said invention, the following is a
complete description of same, reference being had to the accompanying drawing
forming a part of this specification in which :-
Fig. 1 is a sectional elevation of knives grates and needles in position.
Fig. 2 is a plan view of grate and knives.
At 1 and 2 are the ordinary draw bars, 3 and 4 are the knives, 5 the needles,
which by means of the peg lag as is well understood and by the collars 6 operate
the said knives 3, 4-At 7 and 8 are grates or combs the prongs 9, 9, of which
intervene and separate the several knives 34, the constant and rapid motion of
the knives 3, 4, impart rotary motion to or otherwise wears away and reduces the
upper ends 10 of the needles 5 so that the knives as heretofore were liable to come
in contact with each other and thus two knives were often raised instead of one-
this being entirely prevented by the intervening prongs 9, 9, the invention has
special reference to what is known as the "Hattersley" or "Keighley" dobby.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is
.The combination of parts comprising combs or grates 7, 8, with the knives 3, 4,
as and for the purpose herein fully described and as illustrated by the drawing
annexed.