IMPROVEMENTS IN HARPOON GUNS AND HARPOONS THE GUNS BEING ALSO APPLICABLE FOR THROWING JINES to be as follows
Year: 1884

page_text: I ROBERT Low, of Albert Machine Works, 146 Overgate, Dundee in the
County of Hoifai North Britain Engineer do hereby declare the nature of my
said invention for "IMPROVEMENTS IN HARPOON GUNS AND HARPOONS THE GUNS
BEING ALSO APPLICABLE FOR THROWING JINES to be as follows that is to say
same
-
My said Invention has for its object to improve the construction of harpoon
guns and harpoons so as to obtain better and more accurate results in using the
My improved guns are also advantageously applicable for throwing lines
My improved gun is like an ordinary harpoon gun excepting that a slot is
formed along its under side from the muzzle back to a point determined by the
sizes of the gun and of the harpoon The harpoon is made with the barrel or pait
of its shank which fits in the gun, hollow and slotted along the side which is
undermost when the hupoon is in the gun Inside of the hollow shank of the
harpoon there is fitted to work quite loosely a ball made with a flat neck which
extends through both the slot in the haipoon and the slot in the gun barrel and
which has formed at its outer part an eye or ring for the attachment of the rope or
foregoer When the harpoon is placed in the loaded gun ready for being dis
charged the neck of the ball is at the front end of the harpoon slot and it the
back end of the gun slot, and when the harpoon is discharged and passes out of
the gun the ball gets to the back end of the shank, and as the slot is continued
round to the middle of the back end, the ball with its neck and eye tuins so as
with the rope or foregoer to get into the axial line of the harpoon. The ball and
end of the rope or foregoer are got into motion before the shank of the harpoon
gets quite out of the gun, and as they are guided by the slot and the slotted part
of the gun barrel when thus starting into motion, and get into the axial line of
the harpoon immediately when the harpoon clears the gun there is very much less
risk of their causing the harpoon to deviate from its aimed line of flight than with
existing harpoon guns and harpoons The harpoon receives the full force of the
explosive before its inner end reaches the inner end of the slot in the gun barrel,
the usual wad temporarily closing the slot at the inner end of the harpoon The
rope or foregoer attached to the harpoon may be coiled in a beck as commonly
practised by whalers, or it may be coiled on a reel or in a fake box as 18 done with

page_text: cket line throwing apparatus Light springs may be fixed to the neck of the
ball to bear on the sides of the slot in the gun barrel to make sure of the proper
guiding action the neck being made a little narrower than the slot so as to move
quite freely along it
For throwing a line there will be used a bolt or projectile made like the shank
of the haipoon and the line will be connected to it in the same manner as the rope
or foregoer is to the harpoon
The gun may be constructed so that the cartridge can be introduced at the
breech, and the slot may be made in the top or side of the gun barrel it being
preferable however to make it in the bottom as described
Dated the eleventh day of Santambas 100A

page_text: I ROBERT LOW, of Albert Machine Works 146 Overgate Dundee, in the County
of Forfar, North Britain, Engineer do hereby declare the nature of my said
invention for IMPROVEMENTS IN HARPOON GUNS AND HARPOONS THE GUYS BEING
ALSO APPLICABLE FOR THROWING LINES,' and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, that is to say
same
-
My said Invention has for its object to improve the construction of harpoon
guns and hai poons, so as to obtain better and more accurate results in using the
My improved guns are also advantageously applicable for throwing lines
An harpoon gun with harpoon as made with my improvements is shown on the
accompanying sheet of explanatory drawings, figure 1, being a side elevation and
figure, 2, a longitudinal vertical section showing the gun loaded Figure 3 is a
cross section of the forward part of the gun barrel Figure 4, is a side elevation
of the harpoon, and figure, 5 shows the after part theroof in longitudinal vertical
section, whilst figure, 6 is a cross section of the after part In these drawings
the same reference numerals are used to mark the same or like parts wherever
they are repeated
My improved gun is like an ordinary harpoon gun excepting that a slot, 7, is
formed along the under side of its barrel 8 from the muzzle back to a point
determined by the sizes of the gun and of the harpoon, 9 The harpoon, 9 18
made with the barrel 10, or part of its shank which fits in the bariel 8, of the
gun hollow and slotted along the side which is undermost when the harpoon is in
the gun
Inside of the hollow shank 10, of the harpoon there is fitted to work
quite loosely a ball 11 made with a flat neck 12, which extends through both the
slot in the harpoon shank and the slot, 7 in the gun barrel 8 and which has
formed at its outer part an eye or ring 13, for the attachment of the rope or
foregoer, 14 When the harpoon is placed in the loaded gun ready for being
discharged, the neck 12, of the ball, 11 is at the front end of the slot in the
harpoon shank, 10 and at the back end of the slot, 7, in the gun barrel 8, and
when the harpoon is discharged and passes out of the gun the ball, 11, gets to the
back end of the hollow shank 10 and as the slot is continued round to the middle
of the back end the ball, 11, with its neck 12, and eye 13 turns so as with the
rope or foregoer, 14, to get into the axial line of the harpoon The ball 11, and
end of the rope, 14, are got into motion before the shank of the harpoon gets quite
out of the gun, and as they are guided by the slot, 7 and the forward slotted part
of the gun barrel 8 when thus starting into motion and get into the axial line of
the harpoon immediately when the harpoon clears the gun there is very much less
risk of their causing the harpoon to deviate from its aimed line of flight than with
existing harpoon guns and harpoons The harpoon, 9, receives the full force of the
explosive before its inner end reaches the inner end of the slot 7, in the gun
barrel 8, the usual wad temporarily closing the slot at the inner end of the harpoon
shank, 10

page_text: The rope, or foregooi, 14, attached to the harpoon may be coiled in a buck as
commonly practised by whalers, or it may be coiled on a recl or in a fake box as
18 done with rocket line throwing apparatus Light springs may be fixed to the
neck 12, of the ball, 11, to bear on the sides of the slot 7 in the gun barrel S to
make sure of the proper guiding action, the neck being made a little narrower than
the slot so as to move quito freely along it
Io throwing a line there will he used a bolt or projectile made like the
shank 10 of the harpoon, and the line will be connected to it in the same manner
as the rope or forgoer is to the harpoon
The gun may be of the ordinary nuzzle londing kind or it may be constructed
as shown in the drawings, so that the cartridge can be introduced at the breech,
and the slot 7, may be made in the top or side of the gun barrel 8 it being
preferable, however to make it in the bottom as described
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
The improved construction of gun for throwing harpoons or bolts with ropes or
hnes attached thereto there being a slot in the gun barrel, and the harpoon shank
or the bolt being made hollow and with slot to allow of the pait by which the
rope or line is attached being guided by the gun barrel and of its moving to the
back end of the harpoon or bolt and into the axial line when clear of the gun,
substantially as hereinbefore described