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Патент USA US2137271

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Nov. 22, 1938.
Filed Aug. 30, 1935
?/zllz'am C.’ Jere/e470,:
Patented Nev. 22, 1938
N'T7v.0‘FiFicE ' 1* if
I r
Applicationihugusttll,1'93'5,SeriallNo.138,583 A
‘ (Cl. Iii-78,5.)
‘ -‘-"‘-"I'he present invention relates to doordovetails
and door lock keepers, and a‘principal‘ object‘
thereof is the combination in a single ‘structure
of 'adovetail and lock keeper.- ‘
7 William C. ‘Devcreauzr.'Detr'oitily?c?l, ‘' ~ it
Further objects of the ‘present invention in
cludethe provision of a combination door dove
tailand door lock keeper arranged’ to positively
prevent relative vertical movement between a
die cast lock-keeper and blocks, and pressed metal
I '
.7 Other objects ~and:advantages of the present
invention appear in'the following description and
ini‘the appended claim.: ‘
In thgaccompanying drawing, which illus
trates a preferred embodiment of the present in
vention ‘and ‘throughout the several ‘views. of
door and a supporting body; which will guide the ~ which corresponding reference characters desig
10 doorjinto locking position and securely hold it
from rattling when‘closed in such position; which
is constructed entirely of non-perishable parts,
thus insuringa long and efficient life; which is of .
relatively narrow dimensions thus adapting it for
15. use upon a relatively thin door post; and in which
afminimum of resistance is offered by the unit
to the. closing and opening movements of the
‘.It, is a'furtherobject of the'pre‘sent invention ;
2,0 to provide a combined door dovetail and door lock
' keeper comprising generally a door ‘lock keeper
and a. cooperating dovetail member," and a con
nate corresponding partsr
mobile -door and body;
the lineal-4
of Fig.
7 Fig.5 is :a view in elevation, taken along the
line~5-—5,, of 'Fig. 4; and "
I Fig. 6 is a fragmentary view in horizontal sec
tion taken ‘along theline 6-—6 of Fig. 4.
, Consideringthe invention ‘in detail, and re
ferring to the drawing, the. lock keeper if], the
outer surface of whichis formed so as to pro
door lockkeeper constitutes the wedge member of
vide the two spaced bolt engaging faces I2 and
I4, and the intermediate sloping surfaces l6 ‘and
i8, is rigidly secured to the body frame mem
a dovetail, and one or more non-resilientbut slid
ably supported blocks are interposed between the
' bers 22 and 24 ‘which define a door post of the
‘ It is a further object of the present invention
to provide a construction as above stated in
illustrative automobile body 26, by studs 20 which
are threaded into bosses 2|. The heads of the
which the distance traveled by the blocks is less
than the distance traveled by the entering ilock
keeper during a closing movement of the door. ._
below the surface of thekeeper Ii). As will be
understood, keeper‘ i0 cooperates" with a bolt 28,
studs 20, as best seen in Fig. 4, are countersunk
It‘ is further. object of the present invention whichmay be associatedwith any. conventional
type of door lock, and which bears against face
to ‘provide a’, construction as above’ stated, in, ‘I2
of‘ keeper 10, when the door is ‘in a closed
which the block engaging walls of the keeper are positiornand
similarly bears against the keeper 40
rearwardly convergent and in which the block
orblocks are complementarily formed.
It is a further object of the present invention to
provide a construction as above stated, in which
the walls of the female dovetail member‘ ‘are
45 rearwardly convergent and in which the blocks
are .complementarily formed.
1It is a furthefobject of the present invention
tor'provide a construction -as' ‘above stated Iin
50 which the blocks are resiliently‘ and slidably'supl
; Fig. 4 isa View in vertical sectiontaken along
to provide a structure as last stated in which the
along the line 2-4’ of Fig. l, and illustrating the iii
nongresilient but slidably- supported blocks.
relation of the parts in the doorclosed position;
Fig. 3 is a view taken along the line 3-3 of
25 4 a further object ofrthe present invention
Fig. 2 is a view in horizontal section taken
nection between them, comprising _. one or more
30 keeper and a cooperating female dovetail mem-‘
Fig. 1 is a diagrammatic view illustrating the
application of the present invention to an auto
ported upon the keeper.
It is a furtherobject of thevpresent invention
‘to provide a combined door dovetail anddoor
lock keeper which may be economically manu
factured ‘and readily assembled. and comprises '
face M to provide. a conventional safety catch
for the doorQ-During ‘a closing ,movement of
the door, as will be understood, bolt.28 is cam
med inwardly by the sloping surfaces It! and
I6,,and is normally. urged to the position illus
trated in‘ Fig. 2 by suitable spring mechanism
‘Aspreviously mentioned, lock keeper It also
acts as_a male dovetail member and for'this
purpose, the lateralfaccs 30 and 32 thereof are
each formed substantially perpendicularly to the
supporting isurfacel'for keeper I0, and are con
vergent in the ‘direction ofthe-closing movement
ofv the door.
The female member jofcthe dovetailcomprises
the metal stamping 36. Dovetail 36 is formed
with a substantially plane mid-section 38 and the
two oifset end sections 40. The mid-section 38
is channel shaped in cross section and each of
the end sections are generally cup shaped in
cross section and have the substantially linear
inner faces 42, which are convergent from right
to left as viewed in Fig. 3. Dovetail 36 is rigidly
supported upon the panel 44Lwhich forms a part
blocks 56 is supported for sliding movement
parallel to the rearwardly convergent faces 30 of
lock keeper Ill between the above mentioned
limits, and is supported in proper position trans
versely of lock keeper H] by the supporting stamp
ing 62 and the legs 15 of the supporting stamping
64. The compression springs 8|, and the tabs 66
associated with support 62, also serve to support
blocks 56 and maintain the curved faces 60 there
of in engagement with the cooperating leg sec 10
tions 14 of the support 64.
10 of the door 46 by the studs 48, the’ heads of
which are countersunk in openings 50 struck in
the surface of the mid portion 38, and the shanks
With reference to the operation of the unit as a
of which are threadably received in bosses 52
whole, a closing movement of door 46 causes dove
formed in panel 44. It will be evident, accord
15 ingly, that dovetail 36 forms a generally U ‘ tail 36 to move to the right with respect to lock
shaped. housing, the legs of which are represented keeper l6 and blocks 56, as viewed in Fig. 3, in 15
by surfaces 42, within which the male member whichthese parts are illustrated in the ?nal or
completely closed position. During the course of
or lock keeper Ill and the two cooperating slid
ing blocks 56 are received.
Each of the blocks 56, which are positioned
respectively on opposite sides‘of keeper l6, and.
form a connection between keeper l0 and dove
tail 86, are generally rectangular in cross section,
this movement, as previously mentioned, the lock
bolt 28 isfcammed inwardly along the lock keeper
surfaces l8 and I6 respectively until it ?nally 20
passes over the bolt engaging face l2 and ?nally
occupies the position shown in Fig. 2. The rela
as seen in Fig. 4. The outer surface 58 of each tion of these parts is such that during the time
block 56 is complementaryito and disposed for that bolt 28 is in engagement with the sloping
engagement by the faces 42 of dovetail 36. The face l8 of lock keeper ID, the faces 42 of the dove 25
inner surfaces 60 of the blocks 56 are generally tail 36 engage the cooperating outer surfaces 58 of
complementary to the convergent faces 32 of lock the slidable blocks 56, which at the time are biased
keeper I0, but are curved somewhat, to permit to their extreme left hand positions (Fig. 6) by
80 proper action of the assembly even though the i the associated springs 8|. Further closing move
door and body are slightly out of alignment, as ment of the door and of dovetail 36 is accom 30
panied by a corresponding inward movement of
described in more detail hereinafter.
The blocks 56 are each supported upon, but in the blocks 56, caused by the engagement just
sliding relation to, lock keeper H) by the pair of mentioned. Because of the converging character
stamped metal elements 62 and 64. Support 62 is of faces 36 of lock keeper I6, however, the inward
of a shape corresponding generally to that of lock movement of block 56 is less than the movement 35
of dovetail 36. With this arrangement, accord
keeper l0, and is provided with the oppositely dis
posed, upwardly struck lugs 66, which cooperate ingly, and depending upon the degree of converg
with corresponding recesses 68 in each of the ency of the faces 30, a relatively large closing
blocks 56, to guide the movements of the latter. movement of dovetail 36 may be accompanied by
It will be noted that a recess 68 is cut in each side a relatively small movement of the blocks 56.
The springs 8| oppose the forward motion of
of each block 56, so that the blocks are inter
the blocks 56 and maintain the faces 58 and 66
The supporting stamping 64 is formed to de?ne thereof continuously in engagement with the co
45 a linear mid section '12, the legs 14, and the end operating faces 42 and 14. Throughout the clos
ing movement, accordingly, the door 46 is contin-_ 45
sections 15. The legs 14 and end sections 15 sup
port two of the faces of each of the blocks 56. uously' supported in a predetermined vertical
The spacing between the legs 14 corresponds to position with respect to the door post 24 by the
the width of lock keeper [0, and the faces 14 are continuous rigid support afforded by dovetail 36,
so complementary to the faces 30 32 of keeper l0. Jolocks 56 and lock keeper Ill. The dovetail con
Portions 76 of supporting member 64 are also
bent around to form an enclosure for one end of
each of the blocks 56, as best seen in Fig. 6. Each
of the supports 62 and 64 are rigidly secured to
55 the back of lock keeper ID by the previously men
tioned studs 26, and lie behind the shoulder 18
formed at the edge of lock keeper In as best seen
in Figs. 2 and 5.
Each of the blocks 56 is provided with a bore
80 86, which receives and acts as a seat for one end
of an associated compression spring 8|, the other
end of which is seated upon a tab 84 struck in
nection automatically accommodates itself to
wearing in of the parts, since the only effect of
such wear is to modify the point in the closing
movement at which the initial engagement of the
parts occur. Thereafter, the action is unchanged
by such wear.
The operation of the unit is also -
unaifected by changes in the vertical positioning
between the door 46 and the post 24. Any such
change, it will be noted, for example a raising of
door 46 with respect to post 24, simply advances
the point in the closing movement at which the
lower block 56 is engaged, and postpones the point
in the closing movement at which the upper block
56 is engaged. After such engagement, however,
the operation is as above described. The curved
surfaces 60 of block 56 also accommodate the unit
and provide correct operation even though the
56 to the position illustrated in Fig. 6, in which 1 door becomes twisted with respect to post 24, thus
changing the angle between faces 42' of dovetail
position, each tab 66 engages one end of the guid
70 ing recess 68 formed in the corresponding block. 36 and the faces 30 of lock keeper l0. Any such
The other extreme position of each block 56, as twisting results merely in a partial rotation of the 70
blocks 56 on their faces 60 with respect to the
will be understood, is determined by the engage
supporting surfaces 14.
ment of tabs 66 with the other end of the corre
wardly from the upwardly struck lugs 70 at the
rear edge of the support 62. Tabs 16, also pass
through corresponding openings in support 64 to
retain the two stampings in assembled relation.
As will be understood, the springs 8| bias blocks
In the practice of the illustrated embodiment of
the present invention, the unit has been found to
It will be seen, accordingly, that each of the ' offer
a minimum of resistance to a closing and 75
sponding recesses 68.
2,137,271 '
opening movement. The construction of the
blocks 56 and of the supporting faces therefor is
- 3
It will be evident that various changes may be
made'in the ‘form, number and arrangement of
parts, and accordingly, the described embodiment,
while representing a preferred-form’ of the inven
such that these parts move freely. with respect to
the other. If desired, also, an anti-friction bear
ing relation between the blocks and the cooperat ' tion, is to be regarded in an illustrative and not
in a limiting sense.
ing surfaces of the parts may be provided, as dis
closed in the Ball Patent No. 1,842,373,‘ granted‘ , ' What is claimed is:
A dovetail wedge member comprising a combi- ,
January 26, 1932, in which the blocks are provided '
a base member, a second member secured
with rollers, which r011, along the cooperating‘ to said'base
member and formed to de?ne there 10
recesses arranged in back-to-back
It will be evident from the foregoing that the
combined dovetail and lock keeper of the present relation and the bases of which recesses constitute
invention provides, in a single unit, a device for oppositely disposed sliding surfaces, a slotted
effecting cooperation with the usualsautomobile ' block individual to each of said surfaces and dis 15
posed to slidetherealong, and means including a
15 door lock, and a device to positively and reliably
prevent rattling of the door and prevent vertical tongue struck out of said base member individual
movement thereof with respect to the supporting ' to each block and disposed to enter vthe slot there
post. The illustrated unit, being formed entirely of to retain said blocks within said recesses.
of relatively simple die castings, and steel stamp- ' '
20 ings, may be economically manufactured.‘ The’
relatively’ few parts promote'ready» assembly of.
the unit.
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