Improvements in "Patches" or Apparatus for Enclosing Breaches in Ships.
Year: 1890

page_text: Date of Application, 8th Nov., 1890-Accepted, 3rd Jan., 1891
COMPLETE SPECIFICATION.
Improvements in "Patches" or Apparatus for Enclosing Breaches
in Ships.
I, JOHN HAIGH SMITH, of the Silverdale, Mill Lane, Southport, in the County of
Lancaster, Engineer and Mechanician, do hereby declare the nature of this invention
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 improvements in details of construction of parts of the
appliances for which Letters Patent No. 11964 dated 21st September 1886, and
No. 13563 dated 28th day of August 1889 were granted to me.
Firstly. To improvements in shutters, and dowels.
Secondly. To improvements in the outer tubular bushes, and connections which
serve to carry the bolt, and a hook, clamp or other device to be connected with such
bolt.
blocks.
Thirdly. To improved appliances for securing the radial connecting chains to the
Fourthly. To improvements in the construction of the blocks, and outer bush.
Such being the nature and object of this my said invention, the following is a
complete description of same reference being had to the annexed drawings in which
the same letters of reference refer to similar parts throughout, and in which :-
Fig. 1 Sheet 1 is elevation of a block shewing front elevation of the improved
shutter.
Fig. 2 is a front elevation of shutter detached from its block.
Fig. 3 is an elevation of the back of the shutter.
Fig. 4 is a vertical section through a―b of Fig. 2.
Fig. 5 is a side elevation of the improved dowel.
Fig. 6 is a plan view of Fig. 5.
Figs. 7 and 8 are cross sections of the improved dowel on lines c-d and e ƒ
of Fig. 5.
Fig. 9 is a vertical section of a block, its inner and outer bush, and bolt in position.
This view also shews section of shutter, and dowel in position.
Fig. 10 is also a vertical section of a modified form of block, and shutter, the same
being shewn in elevation by Fig. 11 and in plan by Fig. 12.
Fig. 13 is a horizontal section of block outer bush, and bolt drawn on line A. B of
Fig. 9 also shewing plan of dowel in position.
Fig. 14 is a section of lower part of a block shewing device for attaching the radial
chains thereto.
Fig. 15 is a plan view of the under side of Fig. 14 the india-rubber mattress being
emoved.
Fig. 16 is an elevation of block illustrated in sectional elevation by Fig. 10.
Referring now to the improved shutter and dowel, at 1 is a plate preferably brass,
or gun metal its sides being bevelled off, or angled as at 2. 2. 2. 2 and through
which plate is the wain hole, or passage way 3, for the dowel 4, also two smaller
oles 5. 5. for passage of the tapered locking pins 6. 6 of the dowel, and such
late 1 is further provided with two recesses 7.7 at its back, which afford space for
ovement of the hinged locking pieces 8. 84 mounted on the hinge pins, or
ires 9. 9.
The mode of attachment of the dowel to the block is as follows
The end of the dowel being passed into, and through the central space 3 of the

page_text: plate 1 its pins 6. 6 will press against, and swing back the locking pieces 8. 8ª on
the hinge pins 9. 9, to the positions shewn in dotted lines in Fig. 4 and as soon as the
pins 6. 6 have passed behind, and beyond the radius of said locking pieces 8. 84
the piece 8 is by means of a hook lifted, and the piece 8 by reason of gravitation,
assumes the position shewn in Figs. 3. 4 and 9 and the pins 10. 10 are then to be
passed along a hole, or slot 11 and through the pieces 8.84 thereby locking the whole
in position.
It will be observed that the hole 3 is considerably longer, or wider than the width,
or section of the dowel (see Fig. 7) thereby providing space for the requisite lateral
movement of the dowel in relation to the blocks with which it is connected.
The shutter 1 is received in a slot, or recess cut in the face of the block (see Fig. 9)
and is secured therein by screws, or other suitable device.
In Figs. 10. 11. 12 and 16 are shewn a form of bush 12 the vertical sides 16 of
which are cast deeper, and shaped so as to form the shutters 1 in and of one, and
the same piece of metal as the outer bush 12, instead of the several, and separate
pieces as heretofore; the vertical sides 16 are preferably hexagon shaped, and form
the lower part of what has heretofore formed the block (see Figs. 10 and 16) the
upper portion being of wood. The dowel 4 in lieu of having pins 6. 6 cast to it, as
above described, has two threaded holes bored through it, in which holes are received
the chased pins 6. 6, and to insert the dowel 4 in position, and so attach the blocks
together, the top portion 13 of the block (that portion which is of wood) is removed,
and the dowel 4 passed through the hole 3, after which the pins 6. 6 are screwed. or
wedged into position, and the wood portion 134 of the block replaced, and fixed in
position by nut, and flanged washer on the bolt 19. Grooves 14 are formed in the
block 13 and in the metal portion 14, 16 in which the dowels 4. 4 can copulate with
piston like action.
Referring now to the bush, and its connections illustrated by Fig. 9. At 12 is the
bush, its upper end 13 is chased, or screwed, its lower part 14 being concave,
and having a series of radial grooves 15 (see Fig. 15) the outer portion of which
forms the vertical sides 16 flush with the outer face of the wood block 13ª which is
let into the outer bush 12 the latter being secured in position within the block by
means of the concave end 14, and the hollow recessed cap, flanged washer, or washer
bush 17, and the nut 18 which when tightened binds the block, and the parts 14
and 17 together.
In the lower part of the main bush 12 is screwed a shorter length of inner bush 12ª
which serves to hold the mattress of india-rubber 18B firmly against the corrugations
of the grooved, or recessed washer 26 which is embedded in the rubber mattress 18³.
At 19 is the bolt for carrying the hook, or other like device and at 20 is a washer, or
ring of india-rubber, or other suitable material, fitting tightly upon, and around the
holt for purpose of excluding water when the bolt is passed through the tubular part
of the outer bush 12.
Referring now to the improved means of securing one end of the several radiating
chains 25 to a block. For such purpose I employ the ring 21 on which the end
link of each chain 25 is received (see Figs. 14 and 15 Sheet 7) and which ring is
received within the groove 214 the ring being passed over, or around the tapered
part 22 of the outer bush 12, and is held in its position by means of the heads of the
screws 24, 24, 24 which project partly over the said ring, after which the ring 27 is
screwed in position shewn clearly by Figs. 14 and 15.
The chains 25 are received in the grooves 15. 15 and held in position in part by
means of the auxiliary ring 27 fixed in position shewn in Figs. 14 and 15.
In order to allow of the patch being secured externally to any breach in a ship
the bolt 19 is provided, and is passed through the outer bush 12 and inner bush 12
as shewn, the nut 18 fixing the bolt at the apex of the block, or blocks, and through
the breach in the ship, and secured inside the same by nuts. or other suitable device,
or in lieu of the nut 18 a cap may he applied thereto in order to render the same
watertight when the bolt 19 is not employed.

page_text: Having now particularly described and ascertained the nature and object of my
invention and in what manner the same is to be performed and carried into
practice, I declare that what I claim is
The improved dowels illustrated by Figs. 5. 6. 7 and 8 and the shutters 1 having
hinged swinging locking pieces and pins all substantially as illustrated by annexed
drawings.
2nd. The improved tubular outer bushes 12 constructed as shewn, and described
and having recesses or grooves for rings 21 and grooves 15 and rings 27 as herein
fully described and illustrated by Figs. 9. 10. 14 and 15 of the annexed drawings.
3rd. The use of the rings 21 grooves 15 chain screws 24 and rings 27 all in com-
bination for purpose set forth and as berein fully described.

page_text: 4th. The improved blocks having outer bushes 12 the vertical sides 16 of which
form shutters 1 the top or wooden portion of the blocks being grooved, and forming
when in position part of the holding device for the improved copulatory dowels as
herein described and substantially as illustrated by Figs. 10. 11. 12 and 16.
5th. The outer bushes 12 combined with the parts 14 and vertical sides 16 cast
together and providing holes 3 for the copulatory dowels 4 as herein described and as
illustrated by Figs. 10 and 16 of the annexed drawings.
11
1 1
T
1000
JOHN HAIGH SMITH.
By his Agent, Walter Brierley,
Central Chambers, Halifax.
JOHN HAIGH SMITH.
By his Agent, Walter Brierley,
Central Chambers, Halifax.