Improved Apparatus for Drilling and Tapping Gas or other Main Pipes.
Year: 1896

page_text: Date of Application, 1st Apr., 1896
Complete Specification Left, 1st Jan., 1897-Accepted, 6th Feb., 1897
PROVISIONAL SPECIFICATION.
Improved Apparatus for Drilling and Tapping Gas or other Main
Pipes.
I, WILLIAM DEIGHTON of No. 1, Petergate, James Street Harrogate, in the County
of Yorkshire Foreman Gas-fitter, do hereby declare the nature of this invention to be
as follows:-
The construction of an apparatus for attaching to gas or other main pipes for
the purpose of drilling and tapping holes therein.
Referring to the accompanying drawing in which like letters of reference indicate
corresponding parts in each of the several figures;
Figure 1 is an elevation of my improved drilling and tapping apparatus, showing.
the mode of attachment, and as fixed in the required position on a main pipe for the
purpose of drilling and tapping a hole therein. Certain parts of this figure are
drawn in section in order to show more clearly the manner in which the apparatus
is constructed.
Figure 2. is a vertical section of the drilling and tapping mechanism on line & in
Figure 1.
Figure 3. is a plan view of the drilling and tapping apparatus as fixed on a main
pipe.
Figure 4. is an elevation of one of the tension rods used to tighten the sling
chains around the main pipe, for the purpose of securing the apparatus in a
rigid position for drilling and tapping operations.
Figure 5. is a sectional plan on line 1.
In the drawing, A represents the main pipe. B is a saddle of cast or wrought
metal which sits upon the main pipe. Four bolts C are secured to the saddle B in a
vertical position, and pass through two circular plates D and E which are collared
in position as shown in Figures 1 and 2 by means of the tubes F on the bolts C.
The drill spindle G within the tubular casing H passes through the circular plates
in the centre thereof, the plate E being tapped to receive the tubular casing of drill
spindle, the latter having a drill boss I for the purpose of inserting in the usual
manner a suitable drilling and tapping too!.!.
The screwed portion of the tubular casing H in conjunction with the circular
plate E supplies the feed motion for the drill spindle, and is applied by turning the
handle K to the right hand.
Two tension rods L pass through the circular plates D and E, and tighten the two
sling chains around the main pipe, securing the drilling and tapping apparatus in a
rigid position thereon. The nuts M are for the purpose of drawing the tension
rods L in the operation of tightening the sling chains.
A ratchet or ordinary tap wrench may be used to turn the drill spindle.
Dated this 21st day of March 1896
BERTIE W. RICHARDSON,
1 Southville Terrace, Ripon Road, Harrogate, Agent.

page_text: COMPLETE SPECIFICATION.
Improved Apparatus for Drilling and Tapping Gas or other Mains
or Pipes.
I, WILLIAM DEIGHTON of No. 1 Petergate James Street, Harrogate in the County
of York, Foreman Gas-fitter, 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, that is to say:
It relates to the construction of mechanism or apparatus which may be applied
or secured to gas or other pipes or mains for the purpose of drilling and tapping
holes therein, and consists of producing mechanism or apparatus of such a nature
as will perform the functions desired of it efficiently and with the advantages
hereinafter explained.
In carrying my said invention into effect I make use of the mechanism or apparatus
illustrated by the sheet of drawings filed with and forming part of my Provisional
Specification and it is to these drawings that I refer in the following description.
Fig. 1 is part sectional side elevation of mechanism constructed according to my
invention, the same being shown as mounted in position on a pipe or main a portion
of which latter is illustrated as being cut away.
Fig. 2 is a sectional end elevation on line of parts shown by Fig. 1.
Fig. 3 is a view of the parts shown by Fig. 1 and as seen from above.
Fig. 4 is a drawing in detail of a part hereinafter explained.
Fig. 5 is a sectional view on line 1 x 1 of Figs. 1 and 2.
The saddle or principal bearing piece B of my mechanism is formed for contact with
the pipe or main A, and into this saddle B I screw or otherwise secure the bolts C
which extend therefrom so that the tubes F may take over them. These tubes F are
in two parts, one below the plate D the other above same so that by the bolts C
passing through the plates D and E and through the tubes F while these latter abut
against the saddle B and the said plates D and E respectively, by tightening up
the nuts at the ends of these bolts C the several parts are firmly and securely held
together.
Mounted concentrically within the plates D and E is the sleeve H, its lower end
passing loosely through the plate D while its upper end is screwed to fit the inter-
nally screwed or tapped opening made in the plate E. The positions of the said
sleeve H relatively with those said plates D and E being regulated by the turning
of the handle K to make same advance or recede by its screwed part as will readily
be understood.
The drill spindle G is made to fit so that it may rotate within the sleeve H which
thus forms a firm and appropriate support for it, and at its lower end is formed a boss
or hub I in order to receive the drill or cutting tool J which latter may be of any
of the well known forms either for boring or tapping the pipe A or as is shown in
the drawings for performing both of these operations. The said boss I is also formed
to have a shouldered part for the lower end of the sleeve H to press against by
which means, the force exerted by causing said sleeve H to advance through the
plates E and D (as by rotating its handle K) acts directly upon and straight in line
with the spindle G thus the greatest possible power is afforded the sleeve H over
the spindle G and drill or cutting tool J, hence its dimensions, as its thickness or
diameter may be small as compared with those of apparatus or mechanism as heretofore
produced for performing like operations or functions.
To secure the saddle B and the several parts it carries in position or contact with
the pipe or main A to be drilled or cut two rods L (preferably square or of rect-
angular form in cross section) are mounted by passing loosely through appropriately

page_text: formed holes in the plates D and E, so that the hooks on the lower extremities may
lay hold of the usual holding chains as shown by Figs. 1 and 3 wherein each rod L
has its respective chain (or only one of such chains, arranged at about the middle
part of the apparatus or otherwise placed to lie in the same plane as the axis of
the drill's spindle G, may be employed in which case the rods L would each have
only a single hook at its extremity and the chain would lay-hold of one rod's hook at
one end of the other by its other end) which passes around the said pipe A thus
while by tightening the nuts M at the upper ends of these rods L these latter will
draw and so securely hold the said chains against the said pipe or main A they
consequently also firmly and rigidly hold the whole mechanism in position. Any
appropriate winch or wrench handle may be used and fitted to the upper end of
the spindle G.
As above described by constructing and arranging the several parts forming my
improved mechanism so that they will lie as straight in line with the direction in
which the several forces they have to exert, act, it will be seen that their
dimensions may be reduced to a minimum, yet strong, portable and light working
mechanism is produced.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. Apparatus or mechanism for drilling or cutting, the same being constructed and
arranged to operate substantially as herein specified.
2. In mechanism of the class described, a shouldered drill spindle, an elongated
sleeve supporting and arranged to press against same, guide or supporting plates
for holding these parts in position and bolts and tubes for securing the several parts
together, in combination substantially as specified.
3. In mechanism of the class described, a drill spindle, a sleeve taking over said
spindle, plates for holding said sleeve, bolts and tubes for securing the plates and
the foot-step or saddle together adjustable holding hooks and a chain or chains for
taking over these hooks, in combination the same being formed and arranged to
operate substantially as specified.
0111
on
WILLIAM DEIGHTON.