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Патент USA US2121429

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June 21, 1938.
`
s. GLUHAREFF
‘
2,121,429 \
áEsILiENr ENGINE: MOUNT
"Filed nay 2_1, 19:55
5 Sheets-Sheet 1
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. June 21, 193s.sf GLUHAREFF Y
«RESILIENT ENGINE MOUNT
‘
Filed uay‘ 21, "1935
i
2,121,429
`
'
'
3 Sheets-Sheet 2`
IN VEN TOR.
ATTORNEY ‘
.Íune 21, 1938o
s. GLUHAREFF
2,121,429
RESILIENT ENGINE MOUNT
Filed may 21, 1935
« s sheet‘sèsheet 5
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BVM 4. ‘M ff
ATToRJs/EYV
. ‘i Patented June 21,
» UNITED STATES 'P-ßxrlaN'rA ~oI-‘Funr
¿Serge Gluhareff, Stratford, Connà, assigner, by
' mesne assignments, to vUnited ~`Aircraft ‘Corpo- `
ration, a corporation 'ci Dclawarïe` ,
' ‘application May 21, 19st, scriainacasoi
ì
.. ` ‘
f
9 claims. loi. :4s-_5iA
This invention relates to' improvements in resil plan view for the engine mount illustrated in` f
Fig.8.
lent engine mounts and particularlyto improve
ments in resilient mountings for supporting an
'
,
‘
Ü.
“
N1
Referring to the drawings in detail, the numeral
`
»
i2 generally indicates an engine which may be "a
engine upon `thcfiîrame of a vehicle‘such as an'
5 aircraft, and has for an object‘the provision of`
a flexible mounting that will safely secure the
engine
to the
structureasofathevehicle
frame and
at supporting
the same time/act
dampener Jl
radial internal combustion engine of the` type 5'
commonly employed for thepropulsion of air
to reduce the amount of vibration transmitted
r10 lfrom the engine to the frame. A further object
resides in the` provision `of a resilient enginev
mounting by means of which the engine may be
conveniently and quickly attached Vto and de
tached from the engine supporting’structure.
15 Other objects and advantages will appear as
indicated at I6 mounted upon the ‘crankcase I8. 10:
planes.`
This
engine is not
provided
withaofpropeller
hub M and
a propeller,
illustrated,
conven- ’ `
tional design, and has a plurality of cylinders as
4. `
Attached to the crankcase is an intakemanifold
2|) commonly` formed as acasting of some‘light 1
strong alloy such as aluminum alloy andprovided
with integralV engine mounting pads 22.` Refer->- ` ¿N
ring to Fig. 3 it will be observed that the engine ï 15'
' mountings pads 22 are in the form cf cylindrical " l
l the description proceeds. `
bosses cast on the manifold structure and pro
In the accompanying drawings in which like . vided with concentric bores or wells 2l whichl~
`
reference numerals are used to designate similar maybe internally screw threaded for the recep- Y
parts throughout, I have illustrated a suitable tion of stud bolts bymeans of _which the engine 20
an mechanical embodiment of what is> _now con
sidered to be the preferred.4 form of the invention’
and two slightly modified forms thereof. The
drawings, however, are for the purpose of illus
‘ tration only and are not‘to be taken as limiting
25 the invention, the scope of which is to be meas
ured entirely by the scope of the appended claims.
Inthe drawings, Fig. 1 ‘is a side elevational
, view of an engine attached to an engine support
ing ring, a portion of the ring being broken away
30 to illustrate the application thereto of an engine
mount constructed "according to the idea of this
invention. Figure 2 is a front elevational view
' on an enlarged scale of a resilient engine mount
35 constructed according' tothe idea of theinven
'
tion. Fig. _3` is an elevational` view _of a> frag
mentary portion of the rear side of the engine
and the >engine 'supporting structure showing
engine mounts constructedy according 'to the .idea
¿o of this invention installed between the engine
andthe engine supporting ring. Fig. 4 is an ele
vational view on an enlarged scale similar to
Fig.‘2 showing-a somewhat modified form of en
‘ gine mount, a portion being broken away to better
‘5 illustrate the construction thereof. Fig. 5 is a
cross sectional view on the line 5-’-5 of Fig.4.
Fig. 6 isa detail view, `partly in section, of the
isy mounted upon the supporting structure.` The 3 .
pads'22 are spaced around a circle having its cen
ter substantially coincident with the axis of ro- i
tation of the engine crankshaft and are sub-_
stantially equally spaced from each other. The 25
engine is supported upon- an engine mounting
ring which may be tubular in“ cross section as
`indicated at 26 in Figs, l, 3, and 5, or may have'.
some other cross sectional form such as a channel
„ section as indicated at 2B* in Figs. 8 and 9. .The
\
‘ '
.
30
ring 26 is mounted upon the `framework of the
vehicle by means of a plurality of braces as indi
cated at 28 Vwhich are preferably permanently
welded to the engine mounting ring and provided ` ‘
with apertured brackets 30 by means of` which 35 i
the
secured’to
engine the`
mounting
framework
ring 26
of may
the airplane.“
be detachably
The,` `
engine is conventionally lsecured to the engine
mounting ring by means of apertured metallic
brackets welded to the ring and positioned so as 40
_to overlap the enginemounting pads when the 1
engine and ring `are in the relative position illus'
trated in Fig. 1, and stud bolts ,extending through j; .
the' apertures in the brackets and into the screwh . l
threaded wells 24` in` theengine mounting pads. 45
While this> construction provides a secure >and
'
solid attachment of the engine to the supporting
structure, it, at the same time, transmits most,
engine mounting` block illustrated in Fig.v f2. " of the engine vibration to the frame of the' air
Fig. '7 is an end elevational view of the mounting plane.4 l¿is stated above, it is among the objects 5'0
50` block illustrated'in Fig. 6. Fig. V8 is a‘front ele " of' this invention to provide a mountingwhich _
vational view showing a mounting block as illus-t-` will permanently and safely secure the engine
trated in Fig. 2, and 6, mounted upon an engine> to the engine supporting structure and will at the
‘supporting ring having a channel-shaped cross Sametime reduce the amount of vibration trans- „
t
.sectioni Fig. 9_is a vertical sectional viewA on the
line $-~-9 of Fig. 8, and Fig. 10 is a fragmentary
mitted from the engine'to the supporting _struc- 5g
2.121,49»
ture. 'Ihis and other objects are accomplished
by the following construction.
~ `
-_ ~A plurality of engine ßarrying brackets are se
enen oi the bushing n there isle tubular inner
member l2 which' extends 4entirely through the
bushing and terminates flush with the tapered
cured to the mounting ring 26 and, in the form
ends of theA bushing. This tubular member is '
of the invention illustrated in Figs. l to 5, these .-preferabiy
internally screw threaded in the op- '
brackets are formed by welding to thev inner sur
posite ends thereof to receive stud bolts 64 which
face of the ring 28, a plurality of bracket hangers pass
through the apertures 44 and 46 provided
as indicated at 32 and Il, -arranged in pairs and
provided with parallel faces 36, spaced from each ' in. the webs 3l of the bracket hangers and are
other so-as to include between them a space -equal screw threaded into the inner members to rig
. to or greater than the width of the corresponding
- engine mounting pad 22. The hangers 32 and
`
-idly secure the inner members to the ring car
ried brackets. A bolt ß extends through each,
- of the apertures I6 and into the bore or well 24
Il extend inwardly of the mounting ring 2t and`
lie substantially completely in the space included provided in the corresponding engine mounting
pad 22. to rigidlyl seeurethe mounting blocks 4l
bythe ring. 'I'he pairs of hangers are disposed to
the engine pads.
around the mounting ring in spaced relation
Whenthe
bolts M and Il are in place, as de- .
corresponding to the space of the engine mount-y
ing pads 22 so that each cooperating pair of hang
lers l2 and Il forms a
bracket for at
20 taehment of one of the mounting
mounting pads `22. The
hangers 32l and 24 may take any desired form
which will provide sufficient structural> strength
>for carrying the loadimposed upon them, but I
prefer to form these hangers as substantially U
shapedor channel members, each having a web,
comprising the face It, of a width substantially
equal’ to I_the diameter of the mounting ring and
a pair of tapered flanges as indicated at Il and
“_,disposed` one at each side of the web; the
entire member being formed by stamping and
bending up a suitable piece of sheet metal. The
end of the web` to which the Wideends of the
tapered flanges-are attached is preferably cut
out to providetherein a concavit'y having a ra
dius equal to the radius of the exterior surface
of the mounting ring so that the hanger may be
closely fitted to the under surface of. the ring.
. 'I'he hangers are preferably attached to the ring
by welding along the end of the web contacting
the ring and alòng the wide ends of the flanges as
indicated at-IZ. Each of the hangers 32 and u
is provided in the web portion thereof vwith a
» pair of apertures as indicated at Il and 46, these
scribed above, the engine is securely, but resili
ently; supported upon> the engine mounting zing
264 by thel mounting blocks I8 resiliently sup
ported upon the brackets provided by the paired
hangers 32 and 3l bymeans oi' the inner mem
ybers 82, the connecting bolts il, and the resili
ent bushings 5l interposed between the inner
members and the sleeve portions of the mounting
blocks.` 'I'he hangers 32 and 24 have their par
allel surfaces Il spaced apart a distance equal
tol the length of bushings 58 and somewhat
greater than the length ofthe sleeve portions
50 and 52 of the mounting blocks, thereby allow
ingv for slight movements of the mounting blocks
relative to the brackets by placing the material
of the resilient bushings Il in shear in an axial
direction.
l
'
,
From the above description it will be observed
that any load placed upon the mounting blocks
4l in a direction parallel to a radius of the mount-A
`'ing ring, or which tends to rotate the mounting
blocks about the> axes of their respective inner
members 82, A`is resisted by the spaced apart inner
loading results only in
. members 82 so that such
radial compression of the resilient bushings and
relieves th‘e resilient bushings of any rotational
shear. Loading in a direction tangential to the~
apertures beingv spaced¿from each other along a
radius of the mounting ring 26 and the opposite
mounting ring, however, such as the loading d_ue
tion, these mounting blocks are formed as drop
forgings and then machined to the proper shape
and 5250i the mounting blocks 48 with the result
40
.apertures in each pair Aof hangers 'being in align- I to the torque- forces exerted by the engine, places
_ ment with each other.
the resilient bushings in axial shear and any
A mounting block generally indicated at Il torque vibrations set up by the engine are damp
attached to each of the mounting pads " l22 as ened by.the resiliency of the bushings under axial
.clearly illustrated in Fig. 3. In what is now shear. The resilient bushings 58 are preferably
considered to be the preferred form of the inven
vbonded during the vulcanizing process to both 50
and dimensions. Each block consists essentially
the inner members Hand the sleeve portions l0'
that the- resiliency of the bushing will always
`return 'the mountings to their normal centered
form of elongated cylinders oi' constant diameter position relative to the mounting brackets as. 55
~ "spaced apart and having their' axes parallel to illustrated in Fig. 2.
‘each other. The sleeves Il and 52 are joined
In the inodiiled form of the invention illus
together by'an integral intermediate> portion Il
having an aperture II extending therethrough trated in Figs. 4 and 5, the sleeves ill' and 52’
in an axial direction disposed at right angles to are formed as separate tubular members and are 60
the axes of the sleeve members Il and 52,- for 'secured together in spaced parallel relation. to
each other by an intermediate member M’ weld
the-reception therethrough of a stud bolt 6I, for ed
along its adjoining edges to the sleeve mem- securing the mounting block to a mounting pad
bers.’
The member Il’ is preferably in the form
of the engine. As illustrated in Figs. 'I and 9.
of a pair of 'sleeve members W and $2 in the
.
thetbloek Il has a thickness substantially equal
of a spool of square cross section, as indicated
ciated sleeve member- as indicated at ll. vWithin
inner members l2 in this modified form of the
75.
to be outer diameter of the sleeve portions Il at Il, provided at each end with an outwardly
and l2 and preferably has a‘width somewhat less extending nange as indicated at 1l and l2, the
than the length of the sleeves lll and I2 in order 'edges of the ñanges ‘Il and 12 contacting the
70 to reduce the weight of the block. A resilient cylindrical members Il' and l2’ and being se
tubular bushing 58, preferably formed of vul-~ surely welded‘ thereto as indicated at 1I. The
canized rubber or“ a similar material. is disposed intermediate member u' ià also provided with
` -within each of the "sleeve members l0 and l2 av centrally located aperturell'v for the reception
the bolt Il for securing the mounting block
and has tapered- ends extending beyond the asso _of
to the engine'. The resilient bushings Il and.
1s
vanimas
are the same as those usedin the pre "tive brackets receiving said blocks,` and a resilient
bushing in ‘each o! said‘sleeves surrounding the
¿fïferred form of the deviceV as described above.
respective member.-
` » In. the further -modified form> of the device
Willustrated in Figs. ‘i 8, 9 and "10, the resilient
` " mountings are secured upon a ring »26' having
‘ ‘ i ` a iiat‘iace opposed to 'the end of mounting pads
,
‘
2." A, resilient mounting for supporting an en
gine having aperturedmounting pads» thereon on
Va frame having an engine mounting ring com
prising, hangers for attachment in spaced par- `
2_2, the diameter off. the lringbeing substantially
Í ,"the‘same as thefdiameter lof theycircle‘ around ` allel relation 'to said ringto form engine mount
` uwhich the mounting pads are arranged. While _ ing brackets, mounting blocks each comprising a e
` )l0 ,"»the ring 26l may be solid or2 of a square or oblong “ pair of tubular members disposed in spaced par
¿cross section, as illustrated in Fig. 9, it hasL a, allel "relation-to each other and ‘an apertured
` channel cross section comprising a pair of ñanges intermediate member. connecting~said tubular _
; and anyintermediate web. In this form oi’ the ' members and permanently securedv thereto, a
n
bolt extendingy through _each apertured interme
cf‘ydevice the ring carried brackets are formed by
mounting pairs of angle plates, as indicated at
‘
l5.
` i
diate member and into 4said aperture in said
,
mounting pad -to rigidly secure said mounting“ n n
` ‘16; directly `upon >the flat surface ofthe web of
block to said mounting‘p‘ad, a member extending
through each tubular member of eachv block
and secured to the hangers of the corresponding
if `the ring." Each of the angle platesA 16 has an
` ï apertured base portion 18 through which bolts
‘ ì. `1 80 extend; the mounting ring 26' being provided
2G' kwith corresponding apertures 82 for the recep
brackets, and aresilient bushing in each of said .
tubular members `surrounding the respective inner
l*tion of the bolts and the` bolts being provided
‘ 'i with screw threaded nuts 84 on the side of the t
member.
,2,5
‘ ,
A
ring and provided with a pair of apertures spaced
from each other along said radiusand ai tapered
ñange at each edge of .said web ffor. reinforcing
‘n ¿the side thereof opposite the base Vportion 18 and
through the mounting' ring 26 where it is secured
by means of a screw threaded nut 92. The‘up
‘ `‘standing` portion 90 ,of each angle plate is pro
,
ring, each hanger having a web arranged to ex
tend ‘substantially `parallel to a radius of said
¿through a tubular sleeve' 88, securely welded to
the upstanding' yportion 90 of the angle plate on
‘ 30„
,
a frame‘havingan` engine mounting ring corn-r
prising,` hangers l,for attachment in pairs to said
`and a`third,`sornewhat longer bolt,` 86,- extends
t
"
3. A resilient mounting for supporting ,an en
gine having apertured mounting pads thereon on `
mounting ring opposite the plate. `In the conl
struction illustrated, the two bolts 8l)` extend
through’the base'portion 16 of the angle plate,
, said web; the webs‘of each pair of hangers being
disposed in spaced parallel relationto each other,
mounting blocks each havingan apertured inter
¿members 62 to the plates,.the opposite apertures mediate portion connecting a pair of spaced par-` 35
allel sleeves with said aperture substantially equi- >
‘- ,inV the plates of each pair being in axial `align
ment as described above. The inner members distant ‘from said sleeves `for attachment to the.
i ï 62, the resilient bushings 58, and the mounting` mounting pad-'of said engine and disposed be
` Y blocks 48, are the same ‘as those described above, tween the hangers of corresponding pairs with
vided with a> pair- of,> spaced apertures through
which extend the bolts 64 for securing the inner
\
as either
`form of my improved mounting block ` said sleeves inV axiall alignment with‘said aper- d0
.
l4o
tures,- a member extending through each of said,`
sleeves, a bolt extendingthrough each of said
; mounting pads in themanneras described above apertures and screw threaded into the corre-- f
sponding end of the respective member for secur
by means of the bolts 66.
\ `i , may be used in combination withthe angle plates
¿16 andv the- blocks are secured to the engine
¿Preferably the mounting’ ring 26' is provided
'ing said members „to said hangers», a ~resilient 45 A
with a series oi’ apertures as indicated at 94, dis«`
bushing in each sleeve surrounding the respec
the bolts 66 so vthat a toolv may be inserted
apertured intermediate portion to the respective
thròughlthese -apertures to engage the heads ci
engine mounting pad.
posed in concentric relationv with the heads ot - tive member, and a bolt extending» through each
. the `bolts 66 to'turn the bolts into'rigid engage
v
4. ‘A resilient mounting for supporting an en'- 50 y
gine having spaced mounting pads arranged in
While >I have illustrated and described a spe-` 'a circle upon one side thereof- on a frame having
a tubular engine mounting 'ring comprising, a
` ciiic mechanical embodiment of the idea of in
ment in the mounting pads 22.
series of hangers adapted to be secured in pairs ‘
55
ytion is not limited,..to the speciiic construction , to the inner side of said ring and to extend with-`-
wvention, it is to be understood that the inven~
tt
Jsoj illustrated' and described, but that . such
, changes in size, shape. and arrangement of parts
in said ring to` form mounting brackets for said
engine, `the hangers ‘of veach pair being provided
may be -resorted toy as come'within >the scope of . with Webs i‘or disposition parallel to the axis of
said ring, and tapered ñanges for reinforcing said
, Having now described my invention _so that webs, mounting blocks each having a pair of 60
` -the sub-joined claims. ‘
co
others ~skilled in the art may clearly understand
>the same, what I desire to secure by Letters Pat
;g ent >is as follows:
»_
'
i
parallel sleeves and a substantially centrally ap
ertured portion'intermediate said sleeves secured
one to each engine mounting pad and disposed
between the parallel` webs of the hangers ot the
bracket, a resilient bushing in each 0.5
"ssl gine having mounting pads thereor?on‘. a frame, ‘ corresponding
having an engine mounting ring comprising,-pairs sleeve, an inner member extending through each
'1.,A resilient mounting for supporting an en
of lrîangers adapted to >lie-secured in spaced par
;alle relation on' said` ring to form engine mount
ing brackets, mounting blocks each comprising a
`forging vprovided with a pair of spaced parallel
"
bushing, and means extending through the re
spective webs for securing said inner members to
the respective brackets.
5. 'In combination with an engine having spaced -
‘sleeves and a centrally located aperture extend; mounting pads and aframe having an engine
ing `the'rethroughto receive a bolt `for securing ,mounting ring, means for resilientiy supporting
said .mounting block ‘to' one of -said mounting ‘ said engine on said ring comprising, a series of
. pads, a member extending» through :each of said ‘ angle plates secured to said ring adjacent to said
sleeves and secured to theßhangers of tne‘respecf .engine 'and `'arranged in pairs
to provide'a series 75
y
4
erringmriedmounungmketsforsaidengin,
an engine mounting block having apair oi' par-l
alle] sleevesl and an apertured intermediate' por
tion connecting said sleeves. a bolt extending
thmsh'n‘id apertures intermediate portion or
each block spaced midway between said sleeves
it
said engine, and means for connecting said 4block
with an engine support, said support connecting
means comprising. a member positioned within
each ot said sleeves, a resilient-bushing between
each~ member and its surrounding sleeve and -'
for securing each member to said support.
and throughthe corresponding mounting pad for i means
8. An engine mounting block comprising in
securing a mounting block to each oi' said mount
a block having a substantially cen
ing pads, a resilient rbushing in >each of said combination
trai aperture for receiving means connecting the
sleeves. an inner member extending through each 1 block with an engine. a pair of spaced parallel
bushing. and means securing said inner-’members sleeves arranged on opposite sides of said central 10
to said angle plates.
6. An Àengine mounting’for securing an engine
to~a ring support comprising: a series oi’ rubber
bushings extending in sequence in two concentric
circles around said ring and having their axes
tangential with said circles. means centered upon
said circles for attaching said bushings to said
ring support and means centered betweenr said
circles for attaching said ,bushings to said engine
to subject said ‘bushings to shear strain under
the torque of` said engine and to radial compres
sion only under the weight and thrust of said
aperture, and having their axes~ arranged trans
verse to the axis o! said aperturer resilient bush
ings in said sleeves and means connectingv said
bushings with a support for said enline.-
i
l9. In an engine mounting for securing an en
gine to a mounting ring, in combination a block,
means located at substantially the center of said
block for connecting said block‘with said engine
or said ring. and means located on opposite sides 20
of said nrst mentionedmeans for connecting said
block with said ring or said engine, said second
mentioned means comprising a pair ot spaced
parallel sleeves integral with and forming part
7. An engine Amounting comprising in combi
oi' said block, a resilient bushingl arranged in
nation, an engine mounting block having spaced f'each
of said sleeves, and means `connecting said
parallel sleeves. meanssymmetrically’located be
e.
-
tween said sleeves for connecting said block with
15
bushings with nid nippon. i
c
Y
einen GLUHARm.
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