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Патент USA US2118879

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May 31, 1938.
w. R. cHEsLEY
2,118,879
SPRING COVER
Filed April 25, 1936
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Patented May 31, 1938
mm
UNITED STATES PATENT OFF!
2,118,879
SPRING COVER
Walter R. Chesley, Somerville, Mass, assignor,
by mesne assignments, to F. L. Jacobs Com
pany, Detroit, Mich, a corporation of Michi
g an
Application April 25, 1936, Serial No. 76,384
3 Claims. (Cl. 267—3"l)
This invention pertains to spring covers for use
on leaf springs of automotive vehicles.
One of the objects of this invention is to pro
vide a new and improved means of securing an
articulated metal spring cover in the proper posi
tion on a spring.
My invention more particularly pertains to that
type of cover which consists, in the main, of two
pieces, one piece enclosing three sides of a spring
O and extending partially over the fourth side and
the other piece, called 'a closing strip, being a
member for securing the two edges of the ?rst
member together and at the same time closing
the cover on the fourth side of the spring.
15
My invention may be used in conjunction with
spring covers of the general type shown by United
States patent to Skok, 1,284,482, in which the
main portion of the spring cover consists of a
plurality of sections horizontally connected, or a
cover as shown in the United States application
for a patent of Ferguson, Serial No. 758,068, now
Patent No. 2,043,536, dated June 9, 1936, in which
Fig. 3 is a plan view of my closing strip in en
gaging position on the spring cover;
Fig. 4 is a cross section on the line ‘4-4! of
Fig. 3;
‘
V
'
Fig. 5 is a detail showing the nature of the en
gagement of the preformed ?ange on the closing
strip and the cover;
Fig. 6 is a detail of one means of preventing
subsequent disengagement of the closing strip and
cover.
Referring now to the drawing, in Fig. 1 is shown
the closing strip 2 in which the ?anges 4 and 6
have been formed to their ?nal position at the
time of manufacture of the closing strip. It will
be noted that the closing strip 2 is tapered, the
angle between the sides being relatively small.
Fig. 2 shows a spring cover 3 which is suitable
for use in conjunction with the closing strip 2.
The cover 8 in this instance is formed of an inte
gral sheet comprising sections‘ I0, l2 and M which
sections are separated by transverse slots it‘ and
[8 extending around at least three sides of the
gral unit divided into a plurality of sections by
cover. These slots are necessary if the cover is
to ?ex with the spring. Extending around the
transverse slots which provide the necessary
inside of the cover, and covering the slots it and
?exibility.
I8 are transverse bands 20 and 22 which are held
in position by their ends which are secured by de
the main portion of the cover comprises one inte
In the application of the closing strip, which is
used to secure the main portion of the cover in
position and to close the fourth side, it has here
30 tofore been necessary to snap the closing strip into
10
pressed strips 23 and 24, forced downwardly from
the cover at 25 as clearly shown in Fig. 4.
This cover is of the general nature of the cover 30
position by ?rst hooking the ?ange of one edge
of the closing strip to the complementary ?ange
shown in the application of Ferguson, Serial No.
758,068 above referred to, the main distinction
of the cover and then forcing the other ?ange of
being that the edges of the cover on the fourth
side are not parallel but converge at an angle the
same as that of the ?anges of the closing strip. 35
The ?anges 26 and 28 of the cover 8 are likewise
the closing strip past the other complementary
35 ?ange on the cover.
Thereafter the closing strip
is locked in position by bending the complemen
tary ?anges into a horizontal position. Because
of the necessity of positioning the closing strip
in the foregoing manner it has been impossible
heretofore to preform the ?anges to a position
where further bending would be unnecessary after
engagement of the closing strip with the main
preformed and are complementary to the ?anges
4 and 6 of the closing strip 2.
Fig. 3 shows the closing strip 2 in locking en
gagement with cover 8. This is the position of the 40
cover and closing strip when secured on a spring.
In applying the closing strip so that it may reach
portion of the cover.
By my invention I am enabled to preform the
45 ?anges of the cover and closing strip so that fur
ther bending to secure proper engagement is un
necessary, and installation of the cover is thereby
the position shown in Fig. 3 it is unnecessary to
simpli?ed. Other objects and accomplishments
cover as shown in Fig. 3 until the ?anges ii and 6
clear ?anges 26 and 28. Because of the angu
of my invention will appear hereinafter in the
light of the description and with the aid of the
accompanying drawing in which:
Fig. 1 shows an inverted view of my closing
strip;
‘
Fig. 2 shows a plan View of a spring cover with
55 which my closing strip may be used;
snap the closing strip on the cover as is customary
in cases where the sides of the closing strip and
edges of the cover are parallel. Instead, I simply
place the closing strip slightly to the left of the
larity of the sides of the closing strip and the 50
width of the engaging ?anges, the extent of the
movement to the left is slight, it amounts to not
more than one quarter of the length of the body
portion and is not, therefore, sufficient to cause
the extending end of the closing strip to engage 55
2
2,118,879
either the eye of the spring or, if the cover is ap
plied in reverse position, the axle to which the
spring is secured.
form of my invention, I do not intend to be
limited thereby, but only by the appended claims.
Thereafter the closing strip 2 is slid to the
right until it reaches the ?nal position as shown
section terminating in longitudinal extending
in Fig. 3. The cam action of the tapered engag
ing ?anges draws the cover tightly about the
spring to ?rmly hold it in position. Since the
angle of the taper is slight the frictional engage
10 ment of the ?ange is su?icient to retain the clos
ing strip in position but, as an added precaution,
the ?anges at some point in their engagement
may be ?attened by a blow from a hammer or
otherwise resulting in the formation shown in
15
Fig. 6, thereby providing added insurance against
disengagement.
Further details of my construction are shown
in Fig. 4 which is a section on the line 4-4 of
Fig. 3 showing the covering mounted on a leaf
spring 30. Before applying the cover it is custo
mary to apply to the spring a lubricant or stab
ilizing compound, some of which is forced 'be
tween the spring leaves. Thereafter a fabric
liner 32 is wrapped around the spring. The cover
25. is then positioned on the spring about the liner
by separating the edges of the cover su?iciently
to allow the spring to pass therethrough. There
after the engagement of the closing strip with the
?anged cover edges draws the cover to the posi
30 tion shown in Figs. 3 and 4.
A closing strip of this construction is especial
ly desirable in the application of a spring cover
to a spring in a ?nished automobile. In such
cases there is but little room between the spring
35 and the car frame which makes it difficult to
properly crimp the closing strip of conventional
construction. In such cases my closing strip
and preformed ?anges, which require no further
bending, may be used.
40
While I have shown and described a preferred
1. A spring cover comprising a channel-shaped
tapered ?anges formed from a single sheet slotted
transversely at intervals to promote ?exibility
and carrying a plurality of transverse bands
engaging deformations on said section and held
covering said slots thereby, and a single tapered
member for closing the open side of said channel 10
shaped section, said section and member capable
of disengagement by a comparatively short rela
tive longitudinal movement.
2. A spring casing comprising a body portion
formed to extend around three sides of a leaf 15
spring and partly on the fourth side, the opposed
longitudinal edges of said body portion on said
fourth side having reversely turned diverging
?anges, and a closing strip for closing the fourth
side having reversely turned diverging ?anges 20
complementary to and engaging said named
?anges, whereby said body portion may be con
tracted by relative longitudinal movement of said
closing strip, said complementary ?anges having
deformed portions preventing longitudinal dis 25
placement of said closing strip.
3. A casing for a leaf spring comprising a main
body portion extending about three sides of the
spring and part way about the fourth side, and a
closing strip, both the body portion and closing 30
strip having complementary longitudinally ex
tending ?anges in looking engagement, said
?anges diverging at a small angle whereby said
body portion may be tightened on said spring by
contracting the same through longitudinal move 35
ment of said closing strip, said complementary
?anges having deformed portions preventing
longitudinal displacement of said closing strip.
WALTER R. CHESLEY.
40
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