Improvements in Machines for Tapping Mains.
Year: 1892

page_text: Date of Application, 13th Oct., 1892--Accepted, 10th Dec., 1892
COMPLETE SPECIFICATION.
Improvements in Machines for Tapping Mains.
I, WALTER SETH PAYNE, of Fostoria, in the County of Seneca, and State of
Ohio, United States of America, Gentleman, 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 :-
My invention relates to apparatus for tapping mains, and it has for its object to
provide a machine which will effectively attain the objects for which such devices
are used, and particularly to provide a device of this character which can be readily
and quickly adjusted upon saddles of different sizes according to the size of the
main to be tapped, and which will not only drill and tap against or under the
pressure of water or other liquid or gas pipes, but will also provide a support and
guide for the drill-shank and tap and the cock to be secured within the tapped main
after the drilling of the hole therein has been completed, and means whereby said
cock may be easily thrown into position over the drilled hole and held in such
position while being screwed therein, and with these objects in view the invention
consists of the improved construction hereinafter more fully described illustrated in
the accompanying drawings, and specifically pointed out in the appended claims.
In the accompanying drawings,
Figure 1 is a perspective view, partly in section, of a tapping-machine constructed
in accordance with my invention.
Fig. 2 is a vertical sectional view taken diagonally across the casing and the
swinging crane located therein.
Fig. 3 is a similar view, partly in elevation with the device secured upon a main
and the swinging crane holding the cock over the drilled hole and in position for
being screwed therein.
Fig. 4 is a detail in perspective of the swinging crane and the operating-handle.
Referring to the accompanying drawings, I represents the inclosing casing of my
device, and the same consists of a hollow casting somewhat elliptical in shape and
constructed to accommodate the parts of the machine which will be hereinafter
described. The said casing is provided with a bottom eccentrically-located opening 2
from which depends the downwardly-extending flange 3. The downwardly-extending
flange 3 is designed to be secured within the collar 4 of the saddle 5 by the pressure
secured by the chain and tightening-bolts, said saddle being made of a size to
accommodate the size of the main upon which the same is designed to be seated
and between which and said saddle suitable gaskets are interposed, when the device
is clamped upon the main for the purpose of insuring a perfect water-tight joint, in
order that there may be no escape or leak between the jointed parts.
The construction of the elliptical casing having an eccentrically-located bottom
opening forms a chamber 6 which is designed to accommodate the cock 8 in position
and out of the way while the main is being tapped. Directly over the bottom
opening 2 in the bottom of said casing the same is provided with a top-opening 9,
from which the upwardly-extending neck 10 extends and is designed to accommodate
the movement of the drill-rod 11, working therein and provided at its lower end,.
within the casing, with the ordinary tapered screw-threaded tap 12 which after
drilling the hole in the main is designed to be withdrawn up within said neck and
out of the way, while the cock 8 may be swung into position over the opening.
Secured to the top of said neck is the malleable clamp extension 13, above the
top of which is screwed an ordinary stuffing-box 14 having an interior bore of the
same diameter as the drill-rod 11, which slides and works therein, and thus insures
a water-tight joint. The said clamp 13 is provided with the opposite lateral
ribs 15, to which are pivotally secured the clevises 16 internally threaded to
"מ
27

page_text: accommodate one end of the right-and-left screw-threaded adjusting-bolts 17 which
engage said clevises and the inner ends of the chain-harps 18, provided with enlarged
openings 19 terminating in reduced elongated openings 20 that are designed, after
the links of the chain 21 are inserted in the enlarged openings of the harps, to
receive the said links edgewise and thus securely hold the chain in position beneath
the main which the same encircles and prevents the same slipping, while the
adjusting-bolts secure the device upon the main as tightly as may be desired. The
said clamp 13 is further provided with the laterally and oppositely extending
engaging lugs 22, upon which the feeder yoke 23 may be removably attached.
The said feeder yoke is provided with a squared perforation 24, that is adapted to
take either of said lugs, as may be desired, while the upper curved end 25 of the
same is provided with an interiorly threaded perforation 26, which is designed to
accommodate the feeder screw 27, which bears upon the top of the drill 11, which
is rotated under the action of the ordinary pawl and ratchet lever 28, which is of
the usual construction and forms no part of tlic present invention. A. semi-circular
enlargement 29, is formed upon one side of the casing 1, near the top edge
thereof and intermediate of the chamber or recess 6, therein and the portion of the
casing in which the combined tap and drill works. The upper end of said enlarge-
ment is provided with a screw perforation 30, that is designed to receive the
stuffing box 30°, which receives a rotating stem or shaft 31, which revolves therein.
The lower end of the said stem is provided with a squared portion 32, while its upper
end without the stuffing box 30%, secured in the perforation 30, is provided with the
operating handle or lever 34, hinged near its connection with said stem at 35, whereby
the same when not in use may be folded over upon itself and out of the way when
not in operation, and this handie, touching the outside of the neck 10, prevents
the cock from swinging back in the way of the drill. An interiorly threaded ring
or crane 36 is provided with an extended perforated lug 37, having a squared
perforation 38 therein, that is designed to receive the squared end 32 of the
rotating shaft or stem 31 within said semi-circular enlargement or recess 29, which
is of sufficient size to accommodate the enlarged perforated lug 37 of the said
threaded ring or crane and is provided in the bottom thereof with a bearing-
recess 39, that is adapted to receive the lower end of said operating stem or shaft
just referred to. In its normal position the said crane or ring is adapted to be
located near the top of the enclosed recess or chamber 6 of the casing of the
machine and is adapted to receive and hold the internally and exteriorly threaded
mandrel 40, within which is screwed the cock 8 which is adapted to be held
vertically within said recess 6 and supported therein by said mandrel. After
having drilled the hole in the main and tapped the same the combined tap and
drill is drawn up into the machine as far as possible through the neck and stuffing-
box, through which the same works. The operating handle or lever is then opened
and the crane or ring is swung around over the opening 2 in the bottom of the
casing, so that the cock and the mandrel carried thereby comes immediately under
the tap and drill. The said tap and drill is then pushed down and screwed into
the mandrel until it becomes tight therein, and by continuing the screwing of the
tap and drill the mandrel carrying the cock is screwed out of the crane. When
it is thus released, the cock is pushed down into the opening in the main and
screwed therein by means of the tap, using, of course, the ratchet to turn it with.
Having now loosened up the chain and taken the machine off the main, a wrench
is then put onto the cock to screw the same securely into the main after which the
tap and mandrel may be readily unscrewed from the top of the cock.
The construction and operation of the herein described device for tapping mains
is now thought to be apparent without further description.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I do hereby declare that
what I claim is-
1. In a machine for tapping mains, the combination, with a casing and the

page_text: tapping mechanism working therein, of the swinging threaded ring-crane adapted
to be independently oscillated horizontally within said casing and carrying the
cock, and means for removing said cock from the ring crane by the tapping
mechanism, substantially as set forth.
2. In a machine for tapping mains, a casing having an eccentrically-located
bottom opening, an offstanding chamber and an upwardly extending neck directly
over said opening, the tapping mechanism working in said neck and carrying the
threaded tap, an independent swinging ring crane mounted in said offstanding
chamber and adapted to work independently of the tapping mechanism below and
away from said neck, and a cock mandrel removably engaging and carried by said
crane, said mandrel accommodating the cock and receiving the threaded tap,
substantially as set forth.
3. In a machine for tapping mains, the combination, with the casing and tapping
mechanism carrying a threaded tap, of an oscillating stem or shaft secured within
said casing and rotated entirely independent of the tapping mechanism, a threaded
ring crane connected with and swung within the casing by said shaft, and an
interiorly and exteriorly threaded cock-mandrel removably engaging and carried
by said crane, said mandrel accommodating the cock and receiving the threaded
tap, substantially as set forth.
4. In a machine for tapping mains, a casing having a semi-circular enlargement
upon one side thereof, an oscillating shaft supported and journaled within said
enlargement, a hinged handle or lever secured to the upper and outer end of said
shaft, an interiorly threaded ring-crane having an enlarged perforated lug adapted
to engage said shaft within said enlargement, and an externally and interiorly
threaded cock-carrying mandrel removably engaging said ring crane and itself
engaged by the tapping mechanism which removes the same from the crane and
screws the cock into the main, substantially as set forth.
5. In a machine for tapping mains, a casing having an eccentrically-located
bottom opening and an upwardly-extending neck directly over said opening, a
clamp secured upon said neck and having opposite ribs and engaging lugs, clevises
pivoted to said ribs, chain harps adjustably connected with said pivoted clevises, a
feeder-yoke having an upper curved threaded end adapted to receive the feeder
screw and an enlarged opening at its lower end adapted to removably engage said
engaging lugs, and a swinging threaded cock carrying ring-crane located within
said casing and adapted to work horizontally therein and be relieved of the cock
by the tapping mechanism, substantially as set forth.
6. In a machine for tapping mains, the combination, with the casing and the
tapping and drilling mechanism working therein, of the screw-threaded clevises
pivotally secured to opposite sides of said casing, harp-shaped chain clamps
having threaded perforations and right-and-left screw-threaded adjusting-bolts
adjustably engaging the threaded perforations of said clevises and harps,
substantially as set forth.
Dated this 13th day of October 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.