Combined Mechanical Rivetters, Borers, Caulkers, and Cutters Apparatus for Large Surface Work.
Year: 1899

page_text: Date of Application, 3rd May, 1899
Complete Specification Left, 26th Jan., 1900-Accepted, 3rd May, 1900
Combined Mechanical Rivetters, Borers, Caulkers, and Cutters
Apparatus for Large Surface Work.
JOHN DUTHIE, Shipbuilder, Gayfield House, Hillside, Montrose, Scotland, do
hereby declare the nature of this invention to be as follows:-
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An apparatus or contrivance to enable a steam, hydraulic, pneumatic, or other
Tam or hammer or any mechanical boring, caulking or cutting machine, to be
conveniently applied to the rivetting together of metals, or the boring, caulking
or cutting of same on large surfaces, such as ship's shell plating
while on
frame" bulkheads tank tops, deck, and casings of ship, also surface plating work
of bridge, caisson tank, and gasometers, by means of carrying above mentioned
rivetting boring caulking or cutting machine, along, across or under one side
of surface, on a flexible cable of wire or chain with sliding guys on it for lifting,
and provided. with sliding eye bolts for temporary attachment to surface at
one or more points, and permitting ram,. boring, caulking or cutting machine
to travel freely along cable between attached points, but at the same time taking
all back, thrust when machine is exerting power against .surface. The cable to
have a tightening screw, and a powerful spring on. it, if found necessary. The
same apparatus as above to be used in rivetting work on the opposite side of
surface for carrying a ram or specially adapted. mechanical holder on where it
is more convenient than using an ordinary holder on.
D
1000
.
COMPLETE SPECIFICATION.
Combined Mechanical Rivetters, Borers, Caulkers, and Cutters
Apparatus for Large Surface Work.
JOHN DUTHIE, Shipbuilder, l'owis Lodge, College Bounds, Aberdeen, late of
Gayfield, Hillside, Montrose, 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:-
The apparatus or contrivance "which is intended to be used principally in
shipbuilders work but can also be used on bridge, caisson, tank & gasometer
work," consists of a flexible cable of wire or chain of sufficient strength and of
ordinary construction such as an ordinary steel or iron wire cable of about

page_text: "
say 2 to 3 inches circumference or more if desired, and served with wire or
hemp if desired to prevent opperating machines from slipping when at work.
The cable to be either in one length with ordinary eyelet shoe or thimble at ends
& long enough to be bolted on to say the stem of a ship and to be stretched
right along the outside of ship longitudinally and bolted again at the stern or
if desired, carried right round the ship and bolted again at the stem (see Fig. I).
The cable to be provided with a sufficient number of moveable or sliding eve
bolts, eye plates or eye hook bolts for temporary attachment to surface of ship
at about fifteen to twenty feet apart by bolting through the ordinary punched
or drilled rivet holes on the longitudinal seam of a ship's shell plating, while
in frame and wholly or partially plated before the rivetting, boring, caulking or
cutting is done. The cable also to be provided with a sufficient number of guy
ropes of wire for lifting, say two to each length of cable between attachments
(see Figs. 1, 2 & 3), also the cable can be provided with a powerful tightening
screw (see Fig. 1) for taking up as much slack as desired or a screw can be
introduced between the cable and surface at right angles for the same pur-
pose or one or more wooden wedges can be used for this purpose or instead of
above described arrangement "for the sake of handiness
the cable may be
made in from twenty to thirty feet lengths with thimble or evelet shoe at each
end and connected to next length with shackle or hook, each length being pro-
vided with two or three guy ropes and two or three of aforesaid eye bolts (see
Fig. 1). The eye bolts can be made tight enough to prevent shoe from slipping
through same, and one or more of these lengths can be used. For working on
the vertical seams such as butts & frames while the apparatus is in position
on the longitudinal seams another cable can be attached to the surface above
or below first and parallel with it on same side of surface and a suitable bar or
strong back can be used from one cable to other to permit a machine getting
up and down the vertical seams this bar can be part of the machine or tool."
or the cable can be stretched from keel to gunnel or right round the outside
of ship vertically (see Fig. 3) following the line of say, frame rivets or butts
and attached at intervals by bolts, when it is desired to use the apparatus for
rivetting work and it is necessary to have a ram or mechanical holder on at one
side and a ram or machine for heading up the rivet at the other side of surface
such as the inside of a ship's shell a similar cable but in shorter lengths say
ten to fifteen feet per length and provided with eye bolts and guys as before
mentioned can be bolted on to the shell or frames exactly opposite the one on the
outside. For bridge, caisson, tank and gasometer work the apparatus would be
applied in a similar manner, that is, a cable on each side of surface to be operated
on in rivetting work and a cable on one side only for borers, caulkers and cutters
work (see Fig. 1, 2 & 3) for different positions of cable on ships.
After the apparatus is in position on both sides of the surface to be rivetted,
any suitable steam, hydraulic, pneumatic or other ram or hammer provided with
say, a two or three feet long handle (see Fig. 4) can be laid across cable at
For
right angles to surface and be pushed along by hand between temporarly attached
points to position required opposite rivet holes, these tools to have sufficient
stroke to take up more slack then is on the cable and thereby exerting their
full power on the rivet head and on cable which takes the back thrust.
vertical rivetting the tool or machine could be provided with a light lifting
tackle. For boring work a ratchet or other boring tool with a similar handle
to above described could be used and for caulkers and cutters tools which would
have to work at a suitable angle to surface and cable, a similar handle would
do but a suitable collar provided with a clamping screw would be necessary to
prevent tool from slipping on cable, said collar to follow operating tools, or
any of above mentioned tools arranged on special carriages of their own may be
used, the purpose of this contrivance being to provide a means for their being
carried along surface and taking back thrust when they are exerting power
against surface.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be rerformed, I declare that what
I claim is:-
The using a flexible cable of wire or chain attached to one or both sides
of a surface & forming thereby a contrivance or apparatus for taking the back
thrust and carrying and enabling a steam, hydraulic, pneumatic or other ram
or hammer or any boring, caulking or cutting machine to be conveniently applied
to the rivetting together of metals or the boring, caulking or cutting of same on
large surfaces such as already mentioned.