New or Improved Method of and Means for Sinking Caissons in Earth Boring and for Making Foundations for Buildings and other Structures.
Year: 1896

page_text: Date of Application. 8th Apr., 1896-Accepted, 9th May, 1896
COMPLETE SPECIFICATION.
New or Improved Method of and Means for Sinking Caissons in
Earth Boring and for Making Foundations for Buildings and
other Structures.
We, CHARLES M JOHNSON and SAMUEL WEBBER PARKER both of Mystic
Hotel, 39th Street near Broadway, New York in the United States of America,
but temporarily of No. 9 New Broad Street in the City of London Engineers 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 object of our invention is to produce a rapid and efficient method of and
means for sinking caissons for making tube wells, foundations for buildings and other
structures and we attain this object by boring a hole or several holes with special
boring apparatus, which when it has or they have descended to a sufficient depth,
is or are allowed to remain there, and thus constitute the walls of the well or afford
a stable foundation when filled with concrete or other foundation material on which
the structure or building may be erected. The invention is of special utility
where there is or are a considerable stratum or strata of sand or other like
unstable material as it will not be necessary as heretofore to excavate or remove
the sand, but merely to bore down into a stratum or strata of suitable foundation
material and there to leave the apparatus before referred to firmly embedded. The
interior of the caisson is emptied of the borings and filled with concrete or the like
to form a foundation.
The manner of carrying out our invention is shown on the accompanying
drawings of which,
Figure 1 represents in sectional elevation the boring tool.
Figure 2 is an inverted plan thereof showing the cutting surfaces.
Figure 3 is an elevation partly in section of a complete apparatus.
Figure 4 is a plan thereof with the cap A³ removed and
Figure 5 is a plan section on the line xx Figure 3.
Figure 6 is a modified form of boring tool in which however the caisson does not
revolve.
Referring to Figures 1 to 5 it will be seen that the tool consists of a caisson like
tube A provided with any convenient kind of cutting edges or with teeth A¹ or as
shown the teeth A' are mounted on a short separate tube which is rivetted to the
main tube A. The latter may be of any convenient length and diameter and is
mounted vertically in a frame which is suitably made in two halves B and B¹ so
that it shall not take up so much room or be unwieldy to handle when not in use or
during transport from place to place. In order that there may be as little friction
as possible when the tube is revolved the frame is provided with ball or roller
bearings C. The tube is caused to revolve when necessary in any convenient
manner, for instance by means of a spur wheel D here shown made in halves which
are bolted together on the said tube. The spur wheel gears with a long pinion E
mounted in the frame B B and this pinion has mounted on its shaft a pulley E¹
which by a strap receives motion from an engine E or other source of motive
power. A pump F forces water by a conduit or pipe F1 at a high pressure all
according to the material being bored into the interior of the tube A to assist the
tool and scour away the débris, whilst a suction pump G, of comparatively great
capacity, raises such water and more or less of the débris by a pipe G' from the

page_text: 2. The method of sinking caissons for making foundations for buildings and other
structures consisting in providing caissons or tubes with cutting edges or teeth
causing the caissons to revolve or not, assisting or producing the boring action by
streams of water under pressure removing such water from the place of boring
together with the débris or borings produced and when the proper stratum has been
reached filling the caissons with concrete or other foundation material substantially
as set forth.
3. A caisson or tube for boring or well sinking provided with cutting edges or a
tool A¹ a water supply pipe F¹ with branches or jets F3 and a pipe G₁ for carrying
away the water and débris substantially as described and shown."
4. A caisson or tube made in lengths for boring or well sinking provided with a
tool A', a water supply pipe F' with branches or jets F3 and a pipe G' for carrying.
away the water and débris substantially as described and shown.
5. A caisson or tube for boring or well sinking mounted in a frame B B' and
capable of being revolved therein by means of a pinion E gearing with a spur
wheel D and provided with a tool A₁ a water supply pipe Fi with branches or
jets F and a pipe G' for exhausting the water and débris substantially as described
and shown.
6. A caisson or tube for boring or well sinking having a tool A' and being
suspended by a swivelling device consisting of a cap A³ and a swivel A so as to.
permit of revolution by a pinion E and spur wheel D in a frame B B¹ provided
with a water supply pipe F1 with branches or jets F3 and a pipe G¹ for exhausting.
the water and débris substantially as described and shown.
7. In a caisson or tube for boring or well sinking, the application of a tool A¹
mounted on a shaft A° capable of revolving inside the caisson and being suspended
by a swivel A'.
8. In a caisson or tube for boring or well sinking the application of a tool A¹
mounted on a hollow shaft A' for conveying water by branches or jets to the said
tool, the shaft being capable of revolving inside the caisson and being suspended by
a swivel A'.
9. The constructions of caissons or tubes for boring or well sinking shown on the-
drawings.
LOL dow of Anil 1806
JENSEN & SON,
77 Chancery Lane, London, W.C., Patent Agents..