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Патент USA US2405779

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Aug. 13;, 19%.
Filed. May 17, 1944
Patented Aug. 13, 1946
Jack Davis, El Dorado, Kans.
Application May 17, v194A, Serial No. 536,045
8 Claims.
The invention herein disclosed relates to the
installation of nut-plates or other more or less
similar articles on aircraft or other structures.
Objects of the invention are to provide a tool
by which nut plates or the like can be quickly and
accurately positioned and secured on aircraft
skin or other supporting structure.
(01. 78-49)
This lower anvil piece is shown secured by a
screw stud l8, projecting from the bridge por
tion l9, down through the jaw. Fig. 4'shows'
how a shim or shims 20, may be interposed be
neath this bridge portion to adjust the rivet
closing jaw elements for different lengths of
Further objects are to provide a tool of the
The‘ tongue 12 is shown as having a shouldered
seat or rest 2|, for supporting and positioning
character outlined, which will be of relatively
simple and inexpensive construction and entirely 10 the intermediate portion of the nut plate, with
a recess '22, to receive the screw-threaded bushr'
practical and e?icient for the purposes intended.
ing 23, of the plate and an upstanding pin 24,
Other desirable objects and the novel features
by which all purposes of the invention are at
tained, will appear or are particularly set forth
in the course of the following speci?cation,
The drawing accompanying and forming part
of the speci?cation illustrates a present com
mercial embodiment of the invention, but it is to
be understood, that structure may be modi?ed
and changed, all within the true intent and
broad scope of the invention as hereinafter de
?ned and claimed.
Fig. l in the drawing is a broken perspective
at the center of such recess to project up through
the bushing.
This construction enables the nut plate to be
de?nitely located by placing it on the flat seat 2 i, =
with its edge against the shoulder 25, at the back
of this seat and the screw flange 23, in the re
cess 22, with the pin 24, projecting up through
20 the same. With the nut plate thus supported‘
and retained in vde?nite position, it is then easy
to carry the plate in under the edge of the skin
H, and line the screw ?ange up with the screw
opening 26, and the rivet holes with the rivet
view of the head portion of the tool, illustrating
it in the step of positioning the nut plate be 25 openings 21, Fig. l, in the skin.
The tongue is slidably supported, so that it
neath the skin or supporting layer and with the
may project beyond the jaws as in Figs. land 6,
securing rivets dropped in place.
or retreat to line up between the jaws as in Figs.
Fig. 2 is a similar view, illustrating the rivet
2 and 4, in the present disclosure by cross slotting
ing jaws projected over and closing upon the
30 it at 28, to ride over a flat sided bar 29, supported"
across the lower ends of the rods 30, slidingly
Figs. 3 and 4 are broken part sectional details
guided down through the upper jaw plate 13.
of the parts as in the positions shown in Figs. 1
The upper ends of rod 30, are shown connected
and 2, respectively.
by a cross bar 3|, and springs 32, are shown in
Fig. 5 is an end view of the tool, as appearing
- terposed between this bar and the top of plate l3,
from the section line 5-5 of Fig. 4.
to yieldingly support the tongue up against the
Fig. 6 is a broken perspective View showing the
underside of the upper jaw. A spring 33-, seated
jaws of the tool in open relation and the sliding
in a bore 34, in the tongue and bearing against
tongue depressed, as for releasing it from the
the forward side of. the supporting bar 29, serves work.
to thrust the tongue outward into the projecting
In the main, the tool consists of companion
position indicated in Figs. 1, 3 and 6.‘
upper and. lower jaws ‘i, 8, for squeezing the
The method of using the tool will be largely
rivets 8, which fasten the nut plates in, to the
apparent from the foregoing. With the tongue
skin or supporting structure H, and a tongue
thrust forward as in Figs. 1 and 3, the nut plate
12, between the jaws for supporting and posi
is placed on the seat 2|,v the screw ?ange
tioning the nut plate prior to its attachment to
dropping into the well 22, centered over the posi
the skin.
tioning pin 24, and the outer edge of the plate
The upper jaw is shown as carrying a plate
held against turning against the shoulder 25.
43. for backing up the rivet heads, said plate
With the plate so held, the tool is lowered to carry
being shown as secured by a bolt l4, extended
59 the tongue beneath the edge of the skin or sup
down through the jaw.
port II, and then raised to bring the point of
The lower jaw is shown as carrying a bifur
the positioning pin 24, up through the screw
cated H-shaped anvil piece I5, with the upper
opening 26, in the skin. This positioning of the
side portions l6, spaced to engage the stems of
parts is usually assisted by the forward edge’ 35,
the rivets and the power side portions I1, spaced
of the top jaw plate coming into abutting en
to bridge the lower jaw, all as indicated in Fig. 5.
gagement with the edge of the skin as indicated
in Figs. 1 and 3. At such time, the rivet open
ings 21, in the skin will register with the corre
fastener closing elements and means for e?'ect
ing motion of said support away from one of the
closing elements to enable clearance of said
"feeler” from the screw ?ange of an attached
sponding openings in the nut plate and, with
this registry of parts, the rivets 9, can be dropped 5 nut plate.
into place in the aligning openings as in Fig. 1.
2. A tool of the character disclosed, compris
After thus locating the parts and temporarily
ing cooperative jaw members, one of bifurcated
interlocking‘ the tongue with the 1work, through
form, :a support slidingly mounted on the other
engagement of‘ the socket 22, with the’ screw‘
member and 'narrow‘enough‘to freely oper
?ange of the plate, and the holding of the plate
ate within the bifurcated jaw member when said
to the skin by the inserted rivets, the jaw carry'e"
jaw members are closed, said support having a
ing portions of the tool are projectedpforwardly
socket toreceiv'ethe screw ?ange of a nut plate
over the work to bring the opposed riveting el'e‘lLI. . and a positioning pin to project through a screw
ments over the ends of the rivets and the jaws
?ange centered in said socket.
are then closed to head the rivets as in Figs. 2, 15, ' "3.‘A tool‘ of the character disclosed, comprising
43nd 5.
3,3151 i.
upper ‘and. lower..cooperating jaws, a riveting
The upper jaw plate I3, is shown as grooved
plate carried by the upper jaw, spring supported
at 36, on'the underside of the same, to‘ac‘come
plungers ‘operating down through said plate, a
rrzodate the projecting tip of the positioning pin
bar connecting said plungers beneath the plate,
v»’;[‘h.is1pin"imay serve ?rst ‘as a"‘feeler”..for help-4
ing-to: locate-the fnut plate over : the‘tsupportin‘g
tongue and; then as a' feeler for bringing the sup
ported plate'rup .into proper- position- on .the urn
derside :of theiskin.
20 a;- support vslidal'llyiengaged on‘. said bar, ' spring
means f-forenormally projecting, said support be-'
yondrtheforward edge of, the plategmeans‘ on‘
the forward portion'of said support for de?nitely
The. rivets as .soon ' as they 25
positioning a nut plate or'the like thereon and an
anvil plate carried by the lower-jaw having por
tions cooperative with the upper jaw plate-at
opposite sides of said 'slidably mounted support.
".4. A tool of the character disclosed, compris
:i'IYhejaWs may beop‘erate'd’by powenlike the
ing- upper and lower'cooperating jaws, a riveting
jawsiofr alistandardicommercial‘ “squeezer” and, 30 platev carried by the upper jaw,‘ spring supported
in' fact; the invention; including the upperjaw‘
plungers operating down through said'plate,-a bar
platter-l3, land parts-"carried thereby and, lower‘?
connecting said plungers beneath the plate, a‘
companion jaw member l5, may be made up as
support slidably engaged on 'said bar, spring
attachments, ‘after the manner illustrated, to go
means for normally projecting said support-be—
on theijawsof’a conventional form, ‘ofisqueezer; ' as yond' the forwardedge of the plate‘, a socket in
are dropped in place, then serve as the primary
means-for vholding the nut plate in properly lo
» After the: rivetshave‘ib‘een headed up as de'-"
scribe‘d,ithe toolimayLbe .freed from the work by‘
the~ forward portion of vsaid slidable support for
receiving the screw. ?ang‘e'of Ia nut plate or the
like, a positioning pin extending up through the
opening the jaws» and thenpressing down on they
handle bar 3|, tollowerlthe slide‘. as in Fig. .6, to -1 center‘ofisaid socket and'an anvil‘ member 'on
clear1 it'iromitsengagement about the screw 40 the lower jaw having portions cooperative with
the upper jaw plate at opposite sides of the slid
‘The ofvthe
upper nut-plate‘:
‘and lower jaw
‘ ‘ members
’ 1
‘ 1 l31and;I5,
ably mounted support; I
are ' readily I'removabl‘e, enabling 'quick substitue -
:15. Aitool ofxthe characterdisclosed, compris
ing companion jaw membersa support mounted
tion of di?'erent sizes or'forms of these parts'and
the height ofv the lower anvil member l5, as 45 toproject from and to‘. recede‘betwee'n said-jaw
readily‘ variable-byfthe use of‘ shims 20, to; suit
members, said support having. a seat on .theupper
face. of the sameandia shoulderrat the back of
thef‘Asl-shownlength ofparticularly
in Fig.f'5,
rivetsv being
the interme-I
said seat» for-locating anarticle placed‘ on the
diateltongue I 2',‘ is narrowi'enough to pass freely
seat and said support further having a socket
betweem-‘thel spaced'riveting heads ,IB, of the 50 in; saidseatanda positioning pin projecting up
lovv'en-bifurcatedijaw member?‘
:The- tool consists of .butr'few partsland'zthese
ofisimple, sturdy iconstructionz- It can be aproe
duc'ed'therefore' at low cost ‘and be continued in
6. A tool of the character disclosed, compris
ing ‘companion Ijaw members,‘ a support-mounted
to project from andltoirecedebetween said jaw
65 memberssaidsupport having alse'at on the upper
"The" invention
indefinitely."it possible - and
"i practical
1‘ "
face‘ of»v the sameran'dia shoulder at the‘ back of '
to install two or more rivets at a time. In some
said seat for locating‘an article placed on the
seat, said support further having a socket in said
not be necessary and may then be removed; the
seat and a pcsitioningpin projecting up through
tool then being’ used simply to squeeze tWo or 60 said'socket-and yieldable‘means for normally pro
moreurivets, the number operated upon, ‘depends
jecting the support from between the jaw mem
f “
ingiiipon the lwidth of the upper and lower jaws.
instances, the intermediate thrust tongue l2, may
~7i. A tool of the'character disclosed, compris
ing companion-jaw members, a support mounted
companionfastener closing elements,‘ a nut ‘plate 65 to project from and to recede between said‘jaw
support‘disposed between said elements and hav
members, said support having a seat on the upper
face. of'the same anda shoulder at the back of
ing‘ asocket toreceive the screw ‘flange ‘of a nut
plate and'a positioning'pin extending-up through
said seatzfor locating~ an article placed on the
seat, said support further havinga socket in said
said‘ socket to‘serve as a “feeler” for locating a
supported nut-plate’in'respect ‘to the skin or 70 seatiandzapositioning pin’ projecting up through
other, ‘structure to‘ which the nut plate is to be
said socket and-means for e?ecting a separating
What‘is claimed is:
lrA‘tool Of'the character disclosed, comprising
attachedgmeans‘efor projecting said support be
yon'drsaid ‘fastener closingelements'said project
movement of said support from one of said jaw
ing ‘means- being’ yieldable' toenable retraction of
~=8.i"A» t'ool iorattaching nut plates'l'to‘ aircraft
a supported nut plate into position between said 715 or the like, comprising companion riveting jaws,
a nut plate support operating between said jaws
site sides of the intermediate supported portion
and mounted to project beyond the jaws in one
position to receive a nut plate and to reoede be
tween the jaws in another position to bring the
of the same, said jaws having riveting portions
cooperating at opposite sides of said nut plate
support and recessed intermediate said riveting
portions to permit relative projection and reced
ing movements of said nut plate support in re
spect to said jaws.
supported nut plate into position for riveting,
said support having a seat for the central por
tion of a nut plate and narrow enough to admit
rivet fastenings through the nut plate at oppo
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