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Патент USA US3019531

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Feb. 6, 1962
Filed July 2, 1959
United States Patent ?lice
Patented Feb. 6, 1962
James T. Clark, Fort Morgan, Cola, assigner to {flash
Feather Manufacturing (10., Fort Morgan, Colo" a cor
poration of Colorado
Filed July 2, 1959, Ser. No. 824,541
1 Claim. (Cl. 29-283)
to form outwardly extending hooks 16. The two legs
can be forced together in overlapping relation and when
released will expand to the normal position of FIG. 1.
The aligning plugs are formed with cylindrical, en
larged upper portions 17 and cylindrical lower portions
16 of reduced diameter. The diameter of the upper
portions 1'7 is such as will pass snugly through the cap
screw passages in the cylinder head 23 and the diameter
accurate register with the corresponding openings and 10 of the lower portions 18 is such as to pass freely and
snugly into the threaded cap screw sockets 24 in the cyl
passages in the cylinder block thereof. In the past,
block 21. The upper extremity of each plug is
cylinder blocks were provided with threaded studs pro
drilled and broached to form a hollow internal cavity 19
jecting from the block upon which the head gasket and
opening to the top of the plug. The neck or opening of
cylinder head could be placed so as to accurately retain
cavity is surrounded by an inwardly extending hooked
them in place while clamping nuts were threaded on the 15 ?ange
studs. 'It is the present practise to eliminate the studs
be seen in FIG. 3 that if the legs 11 and 12 of
in the cylinder blocks and provide the latter with threaded
are compressed into overlapping relation, they
sockets for receiving cap screws inserted through the
can be inserted into the cavity 19 of a plug and when
cylinder head and through the head gasket. Without the
This invention relates to means for aligning the head
gaskets and cylinder heads of an automotive engine in
studs, it is exceedingly difficult to align and retain the 20 released, will expand outwardly against the walls of the
cavity so that the hooks 16 will engage beneath the
gasket and the cylinder head in position for the reception
hooked ?ange 20 to attach the plug to the tongs.
of the cap screws.
Let us assume that it is desired to place the head
The principal object of this invention is to provide a
gasket 22 and the cylinder head 23 upon the cylinder
simple, highly efficient, easily used and economical means
for quickly and easily aligning and retaining the head 25 block 21. The lower portions 18 of a plurality of the
plugs are inserted into a chosen plurality of the threaded
gasket and cylinder head in place on the cylinder block
cap screw sockets 24 of the head, as shown in FIG. 6,
for the accurate insertion of the retaining cap screws
with the larger upper portions 17 resting on the upper
without damage to the gasket.
of the threads therein. The head gasket 22 is
Other objects and advantages reside in the detail con
now ?tted over the upwardly projecting portions 17 of
struction of the invention, which is designed for simplic 30 the
plugs to accurately align the gasket in register with
ity, economy, and ef?ciency. These will become more
the openings in the cylinder block 21. The cylinder
apparent from the following description.
head 23 is now ?tted over the upwardly projection por
tions 17 of the plugs, as shown in FIG. 7, to accurately
forms a part hereof. Like numerals refer to like parts 35 position the head on the block. Since all of the threaded
sockets 24 do not contain plugs, the conventional cap
in all views of the drawing and throughout the descrip
In the following detailed description of the invention,
reference is had to the accompanying drawing which
screws can now be threaded into place in the available
sockets 2.4 to secure the head 23 and the gasket 22 in
place. The tongs are now compressed and inserted into
the screw passages 25 and into the cavities 19 of the
the improved cylinder head aligning means;
plugs so that the hooks 16 will engage the hooked flanges
FIG. 2 is a side View of an aligning plug with which
20 to enable the plugs to be removed in succession and
the tongs of FIG. 1 are used;
by the conventional cap screws with full as
FIG. 3 is a vertical cross section through the align
surance that the parts are in accurate position.
ing plug of FIG. 2 illustrating the tongs of FIG. 1 in
While a speci?c form of the improvement has been
gripping relation therewith;
described and illustrated herein, it is to be understood
FIG. 4 is a top view of the tongs;
that the same may be varied within the scope of the ap
FIG. 5 is a top view of the aligning plug;
pended claim, without departing from the spirit of the
FIG. 6 is a fragmentary cross section through a por
tion of a conventional cylinder block illustrating the
In the drawing:
FIG. 1 is a side view of gripping tongs employed in
aligning plug of FIG. 2 in place therein; and
FIG. 7 is a similar cross section illustrating a conven
Having thus described the invention what is claimed
and desired secured by Letters Patent is:
tional head gasket and cylinder head in place on the
Means for aligning and holding cylinder heads and
cylinder head gaskets in place on a cylinder block having
In FIGS. 6 and 7 portions of an internal combustion
threaded cap screw sockets comprising: a removable
aligning plug.
engine have been fragmentarily indicated as follows: 55 cylindrical plug having a smooth outer surface, the lower
portion of said plug having a diameter to ?t closely with
cylinder block 21, head gasket 22, cylinder head 23,
threaded cap screw sockets 24 and cap screw passages
25. The improved head gasket aligning means consists
in one of said threaded screw sockets and the upper por
tion of said plug having a larger diameter substantially
equal to the root diameter of the threads in said socket
of a set of elements, each set containing one of the
tongs of FIG. 1 and a plurality of the plugs of FIG. 2. 60 so that it cannot enter therein; a cylindrical cavity
formed in said upper portion opening to the top there
The tongs consist of a single length of resilient ?at
of; an inwardly extending hooked ?ange surrounding the
wire preformed to form a ?nger-engaging loop at its mid
opening of said cavity for receiving a withdrawing tool
point from which two resilient wire legs 11 and 12 de—
for lifting said plug from said threaded cap screw sockets
pend. The resiliency of the wire tends to constantly urge
after the cylinder head and gaskets have been placed
the two legs apart within the con?nes of a con?ning 65 on
said cylinder block.
band 13 positioned immediately below the loop 10. Each
References Cited in the ?le of this patent
leg is twisted 90° intermediate its extremities, as indi
cated at 14, so that the lower extremities of the legs lie
Labbee _____________ __ Feb. 19, 1957
in a common plane and in the plane of the loop 10.
Labbee ______________ __ Dec. 17, 1957
The lower extremity of each leg is narrowed, as in 70 2,816,473
dicated at 15, and the narrowed portions are notched
Great Britain ________ __ July 18, 1938
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