IMPROVEMENTS IN LOOM DOBBIES
Year: 1884

page_text: WO JAMES WARD and JOHN WARD both of Ingham Street Iron Works Ingham
Street Blackburn in the County of Lancaster Dobby and Jacquard Machine Makers
do hereby declare the nature of our said invention for "IMPROVEMENTS IN LOOM
DOBBIES" to be as follows:→
This invention relates to dobbies or jacquard mechanism of the class wherein
needles and collars are used in connection with looped or eyed catch levers and
the object is to provide a better and more simple joint or connection between the
draw hooks and the jacks to dispense with the needles and collars and lance plates
to an improved arrangement of the hooks draw bars or knives and the jacks
whereby a courser pitch or greater space for each jack is obtained without
increasing the width of the dobby and to safety bars which ensure the hooks
being returned after being drawn out and to prevent any hook being raised
except at the proper time and place and to improved pattern or peg barrel.
According to this our invention the draw hooks are attached to the jacks by
means of a lug or button cast on the side of the jack which is received in a hole
in the end of the hook there being a projecting finger which serves the purpose of
ensuring the joint and in place of needles and collars we employ in connection
with each hook a bell or cranked lever carried on a cross fulcrum shaft one end
of the lever is operated by or through the peg mechanism the other end of the
lever indicates or operates the hook which is thus placed in position for being
caught by the draw bar or knife and when the latter makes its return movement
a cross arm or rib connected therewith also makes a like return movement and
forces back to proper position any retarded or lagging hook-whilst an over guard
prevents any hook rising except when operated by the pattern mechanism-The
hooks and the bell crank operating levers are mounted upon their cross shafts or
bearings on two separate planes and each set of hooks have a grid or grating for
ensuring their steady and true motion whereby space is greatly economised and
whilst stronger and more serviceable hooks and parts are provided there is no
increase in the width of the dobby and as double sets of jack levers can be worked
from nearly the centre of the dobby not so much tying up to the heald staves is
required the course being more direct consequently a more direct action of the
jacks and heald levers is obtainable. The pattern or peg barrel we make in two
lengths and mount these end to end, on one cross shaft, and each part having (when
the pattern requires) independent motion all the advantages of two separate barrels
are secured economy of space fewer parts to construct, and move.
Dated this 21st dow of Fahrmary 1881
WALTER BRIERLEY,
Crossley Street, Halifax,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
We JAMES WARD and JOHN WARD both of Ingham Street Iron Works, Ingham
Street, Blackburn, in the County of Lancaster, Dobby and Jacquard Machine
Makers do hereby declare the nature of our said invention for "IMPROVEMENTS
IN LOOM DOBBIES" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
This invention relates to dobbies or jacquard mechanism of the class wherein
needles and collars are used in connection with looped or eyed catch levers and
the object is to provide a better and more simple joint or connection between the
draw hooks and the jacks to dispense with the needles and collars and lance plates
to an improved arrangement of the hooks draw bars or knives and the jacks
whereby a corser pitch or greater space for each jack is obtained without increasing
the width of the dobby and to safety bars which ensure the hooks being returned
after being drawn out and to prevent any hook being raised except at the proper
time and place and to improved pattern or peg barrel.
Such being the nature, and object of our said invention, the following is a
complete description of same, reference being had to the accompanying drawings,
forming a part of this specification, in which:-
Fig. 1 is a vertical section of improved dobby according to this our invention.
Fig. 2. is an elevation of the improved pattern barrel.
Fig. 3. is a section of Fig. 2.
The remaining figures on sheet 2 are details or seperate parts drawn about
full size.
At 1. 2. are the draw hooks attached to the vertical lever 3. of the jack lever 3º
having its fulcrum at 3b by lugs or buttons 4. 4. cast to the sides of the said
levers 3. and which lugs 4. 4. are received in holes 5. of the levers 1. 2. At 6 is
a projecting log or spacing piece which ensures correct relative position of the
levers 3. At 6ª are cross stop and fulcrum bars for lever 3. At 7. are the needles,
or wires employed for operating the upper hooks 1. through the agency of the
pattern barrels 8. and cranked lever 9. carried on cross fulcrum shaft 10. The
lower books 2. are operated by means of the projection 11. of the lever 12. the
latter being upon the shaft. 10. and operated by the pattern barrel 8. as described
in relation to the wires 7. and hook 1. so as to place one or other of the hooks 1. 2.
in position for being caught by the draw bars or knives 13. 14. and as either of
the hooks may be used the rate of speed is reduced one half, and when by double
pegs both hooks and bars are in operation the lever 3 will then rock on centre 3º
the jack lever 3 remaining stationary. At 15. 16. are cross arms or ribs connected
to and moving with 13. 14 so as to force back any retarded or lagging hook.
17. 18 are guards over or above the hooks 1. 2. for preventing either hook 1. 2.
rising except when operated by the pattern mechanism, and a change is required.
It will be seen that the hooks 1. 2. and draw knives 13. 14 are divided and are
upon seperate planes each set has a grid or grating 19. 20. so that space is greatly
economised and much stronger and more serviceable hooks are available. The
pattern or peg barrel 8. is made in two seperate parts 8. 8ª and spaced by collar 21.
the barrel 8 is mounted upon a bush 22. on the ordinary shaft 23. so as to be

page_text: available, apart from the barrel 8ª But when the whole is to be used as one
barrel the star wheels 24. part 8* and collar 21. are removed, then the part 8* and
star wheels 24. are replaced and the longer lag of the pattern chain, will be
received in recess 25. of both barrels 8. 8º.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, wo declare that what
we claim is
1. The levers 3. hooks 1. 2. draw bars, 13. 14. returning pieces 15. 16. in
combination and as herein described and illustrated by drawings.
2. The pieces 17. 18. in combination with the hooks 1. 2. and levers 9. 12. for
purpose and as illustrated by the annexed drawings.
3. The levers 12 having the foot or projection 11. in combination with and for
operating the hooks 2 whereby needles and collars are dispensed with, as described,
and as illustrated by the annexed drawings.
4. The barrel 8° and barrel 8. mounted upon and in combination with the
washer 21. and bush or tube 23. whereby the barrel may be used in two parts
or wholely as. described.
Dated this 19th day of November 1884.
JAMES WARD.
JOHN WARD.
By their Agent, Walter Brierley,
Town Hall Buildings, Crossley Street, Halifax.