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Патент USA US3079826

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March 5, 1963
Filed Feb. 29, 1960
Fig. /
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United States Patent 0 "ice
insertion approximately one-half of the circumferential
pocket or cavity 13 between portion 15 and the inner sur
Clarence W. Lindiey, 24395 17th St, Corpus Qhristi, Tex.
Filed Feb. 29, 1960, Ser. No. 11,6‘é4
2 tClaiins. (iCl. ‘78-47)
This invention relates to tools and more particularly to
face of bell 14, is packed with oakum packing 29. Lead,
heated to a temperature at which it will flow, is poured
into cavity 18 and on the top surface of oakum 20. The
lead 22 completes the joint, but it is essential that the lead
be tamped. As mentioned previously this procedure ordi
narily requires two irons if the custom of the trade is to
be followed. Further, two separate procedures with the
When two pieces of sewage pipe or other similar pipe
are joined it is necessary to caulk ?rst with oakum and 10 irons are necessary.
Tool 24 is an iron which combines the functions of the
then with lead in the joint in order to prevent leaking and
caulking irons.
into the adjacent bell of another piece of pipe.
two customary irons in one tool and which must be used
only once to achieve the same results as the successive
use of the two different irons.
portion of the other pipe inserted thereinto and the pocket
steel and has a shank 26 with an offset 23 between the two
seepage. The type of pipe referred to has a bell at one
end and a male portion at the other end adapted to ?t
In forming a joint, the ‘bell of one pipe has the male 15
Tool 24 is made of durable metal, for instance, tool
ends thereof. One end 3% receives hammer blows and the
other end 32 is the end which works the lead 22. The
end 32 is bifurcated or split longitudinally and the spaced
of the space. The remainder of the space is ?lled with
hot lead. It is the usual practice to tamp or tighten the 20 furoations thus de?ne two direct opposite integrated blades
34 and 36. The blades are longitudinally tapered as shown
lead to form a completely water-tight joint. Normally
in FIGURE 1. As shown in FIGURE 3, the blade 34 has
two caulking irons are used, one for a ?rst full cycle of
a convex outer surface 38 while blade 36 has a concave
operation and then the other for a second cycle of oper
outer surface 49, and surfaces 38 and 4t} match the side
ation. The caulking irons are struck with a hammer in
25 wall curvature of cavity 13. Surfaces 42 and 44 at the
the use thereof.
lower ends of blades 34 and 36 are beveled or sloped out
An object of this invention is to provide a caulking iron
wardly from the longitudinal center line of the split be
which eliminates one of the two separate cycles of oper
around the male portion and located within the bell is
packed with oakum to approximately one-half the depth
tween the blades, and the angularity is approximately 15
. degrees as measured fro-m a plane passing through the
Another object of the invention is to provide a caulking
iron which will enable one of the conventional caulking 30 outer-most edges of surfaces 42 and 44-.
There are adjustable means for adjusting the spacing
irons to be eliminated in that the functions of both con
between blades 34 and 35. These means preferably con
ventional irons’ are achieved with a single caulking iron
sist of a setscrew 46 which is threaded into tapped opening
in accordance with the invention.
48 extending transversely through blade 34. A hexagonal
Brie?y summarized the instant concept has to do with
wrench receiving opening 59 is in the setscrew do in order
a manually usable one-piece or unitary caulking iron ex
ation in the tamping procedure.
pressly designed and adapted to expeditiously and effec
tively tamp poured caulking lead in the aforementioned
pipe joint. This caulking iron comp-rises a rigid shank
to turn the setscrew, and the setscrew has an inner end
end portion is of special construction. More speci?cally
which bears against the inside surface of blade 36. Con
sequently, the spacing between the two blades may be
varied by turning the setscrew. The inherent resilience
and elasticity of the blades tend to hold the blades close
together and the function of the setscrew is to spread the
blades the necessary distance which is a matter of judg
this distal end portion is bifurcated lengthwise, the result
ment of the user.
which has a proximal end portion terminating at an upper
end in a suitable impact surface for reception of hammer
blows in a now well known manner.
The other or distal
ing elongated furcations constituting similar directly op
posite blades. The leading or working ends of the blades
terminate in planar surfaces which are beveled to define
tamping surfaces. The blades are resilient and separated
from each other by an intervening space. The beveled end
As shown in FIGURE 4, tool 24a is a modi?cation
omitting the setscrew. Blades 34a and 36a are identical
to blades 34 and 36 except for the tapped opening 4-8
(FIGURE 3) which is omitted since there is no setscrew.
In use of tool 24 or 24a, it is handled exactly like a
conventional caulking iron. The inherent resilience md
or tamping surfaces converge in a direction toward said
50 elasticity of the blades 34 and 36, plus the bevel of surfaces
42 and 44 will cause the blades to tend to spread to work
One of the features of the invention is ‘an adjustment
the lead 22 properly as the lead is tamped in cavity 13.
allowing the sections of the split end of the iron to be
Each hammer blow on the tool causes the lead to be
spread to selected widths.
worked down into cavity 18 and to be compressed against
These together with other objects and advantages which
will become subsequently apparent reside in the details 55 the side wall surfaces of this cavity. The deflection of
the blades causes the working toward the cavity side wall
of construction and operation as more fully hereinafter
described and claimed, reference being had to the ac
surfaces in a manner which is more satisfactory than the
companying drawing forming a part hereof, wherein like
single operations with separate tools. Further, the inside
numerals refer to like parts throughout, and in which:
FIGURE 1 is a fragmentary sectional view showing the
formation of a pipe joint by the use of a tool in accord
it is laid ?rmly against the portion 16 of pipe it? or vice
ance with the invention.
FIGURE 2 is a perspective view of the tool.
FIGURE 3 is an enlarged sectional view taken on the
line 3-3 of FIGURE 1.
FIGURE 4 is a fragmentary enlarged perspective view
showing a modi?cation of the tool.
In the accompanying drawing there is an illustration of
blade functions as a guide for the outside blade when
The foregoing is considered as illustrative only of the
principles of the invention. Further, since numerous
modi?cations and changes will readily occur to those
skilled in the art, it is not desired to limitrthe invention
to the exact construction and operation shown and de
scribed, and accordingly, all suitable modi?cations and
equivalents may be resorted to, falling within the scope
two sections 19 and 12 of pipe, and the pipe is absolutely 70 of the invention as claimed.
What is claimed as new is as follows:
conventional. Bell 14 is at one end of section 1%, and the
1. A manually usable one-piece caulking iron designed
portion 16 of section it} is inserted in the bell 14. After
and adapted to tamp' and seal concentric inner and outer
minating in a lead talmpin'g portion, said distal end portion
being bifurcated lengthwise and de?ning and providing a
marginal edge portions of lead which has been poured in
the joint around the pipe ends of the aforementioned joint
comprising: a rigid shank’ having aproximal end portion
terminating in animp'act surface designed and adapted for‘
reception of hammer blows and a distal end’ portion ter-'
minating in a lead tarnpin'g portion, said distal end por
tionbeing laterally onset in respect to‘ the longitudinal axis
of said shank and being bifurcated lengthwise and de?ning
and providing a‘ pair of directly opposite elongated furca
tions constituting blades, said blades terminating at‘their'
leading ends in planar tampin‘g‘ surfaces‘, said tamping;
pair of directly opposite elongated furcations constituting
blades, said blades terminating at their leading endsin
planar tamping surfaces, said tamping surfaces being
beveled and the beveled surfaces converging in la direc
tion toward a space existing between the aforesaid furca
> tions, and said blades being resilient and separated ‘from
each other by said space, one of said blades constituting
10 an inner blade and the other blade constituting an outer
blade‘, the entire lengthwise surface of said inner blade
being concave and thus adapted to occupy a position when
in use adjacent to and alongside a convex surface of a co-.
surfaces being at right angles to the axes of said blades
and being beveled, the beveled surfaces'iconverging' in a
acting pipe end, the entire outer lengthwise surface of the
direction toward a space existing between the aforesaid 15 outer blade being convex, the convexity thereof being con-t
furcations, and said blades being. yieldably resilient, the
inherent resiliency of said blades serving to normally
form-able toa predetermined arc to coincide with, a con
cave surface or the cooperating pipe end with Which it is
spread and space the blades vapart but permitting the‘ blades
used, and a 'setsorew' threaded through a screw-threaded
to approach each other to a restricted extent when the
hole provided therefor‘v in a median portion of said outer
tamping situation necessitates minimal yielding’ of the 20 blade and having an inner end bridging the space between
blades toward each other, one'of “said blades‘ constituting
said blades and having a terminal portion adapted to
an inner blade and the other blade constituting an‘ outer
abut an inner lengthwise surface of the inner blade in a
blade, the entire lengthwise surface of said inner blade V manner to forcibly spread‘ the blades apart Whenever
being concave and thus adapted to occupy a position when
necessary or desired, or to‘ be backed, out and to pem'nit
in use adjacent to and alongside a convex surface of a co 25 the blades to‘ respond individually'to forces imposed there
actilig‘ pipe end, the‘ entire outer lengthwise surface of the
on when an impact, is transmitted thereto by way of said
outer'blade being‘ convex, the convexity thereof being con
formable to a predetermined arc‘ to coincide with a con
eave surface of the cooperating pipe end with which it‘ is
References Cited in the‘ ?le of this patent,
2. A manually'u'sable one-piece‘ caulking iron designed
and adapted to ramp and seal concentric inner and outer
marginal edge portions of lead which has been poured in
the joint around the pipe'ends' of the ‘aforementioned joint
Birkrnire _____________ __ Feb. 3', 1891‘
I 558,278
Harlan __________ _....-__ Apr. 14., 1896
Campbell ___________ _._ Apr._ 30,. 1918
terminating in an impact surface designedand adapted for
Murphy ______________ __ Mar. 1, 1932v
Seiler _______________ __ Jan. 26, 1937,
reception of hammer blows and a distal end portion ter
Randall ___________ _..>__._ June 7, 1919‘
comprising: a rigid shank having a; proximal end portion 35
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