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Патент USA US2410874

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Nov. 12, ‘1946,
H. GREENBERG ETAL
2,410,874
KNOCKDOWN TOY
Filed Jan. '11. 1946
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2o 26 IENTOR
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'ORNEY
Patented Nov. 12, 1946
2,4109874
UNITED STATES‘ PATENT OFFICE"
vKNDCKDOPWN TOY
‘ Henry Greenberg, New York, and John J.
O’Connell, Jamaica, N. Y., assignors to N orwalk
Lock Company, South Norwalk, Conn}, a cor‘
poration of Connecticut
'
Application January. '11, 1946, Serial No. 640,435
23 Claims.
'
(01. 46-29)
1
The present invention deals with knockdown
structural toys and speci?cally is concerned with
nipple support illustrating the manner in which
new and improved educational toys particularly
applicable for convenient assembly of miniature
the'rod holding nipples may be rotated or swung
on the spaced disc of the support in an unclamped
structures to simulate certain, types of buildings,
bridges, chassis, hoists or parts thereof although
relation of the latter, and
in the broadest aspect the invention is not limited
in this respect. One object of the invention re
sides in the provision of animproved knockdown
trating another connector for rotatably sustain
toy wherein a connector embodying complemen
lindrical rodsv or braces l 0 are removably sus
Fig. 10 is a perspective view of one connector or
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I
Fig, .11 is a-view similar to Fig. 2 however illus
lllg the rod holders or nipples.
According to the invention the ends of the cy
tained in split substantially cone shaped nipples
or holders N each de?ned-by opposing but identi
cal complementary separable and mating sections
II and I2 having inner ?at faces l3 each inter
ble nipples. Another object of the-invention is
realized in the provision of an improved nipple 15 rupted by a semi-‘circular groove l4 characteriz
ing a cylindricalbore vl5 inthe assembled‘ rela
comprising self retractible separable sections for
tary and separable clamping. members is utilized
to swingably or rotatably sustain a plurality of rod
holders in the form of expandible and contracti
removably sustaining‘ a brace or rod. Another ob
tion of the sections.
ject' is to yieldingly retain the complementary sec
tions of a nipple togetherbyjan interrupted but
resilient ring permitting slightseparation of the
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As illustrated, the upper cylindrical end or head
of each» assembled nippleN ‘is ‘cylindrical and'em
20V bodies
an annular ‘groove 16 in which the inter
rupted resilient wire ring I‘! is appropriately re‘
tained for’ holding the insidex?at faces l3 of the
sections or the expansion of the nipple on the in- '
sertion of a rod or brace into the latter. A fur
' complementary sections 1 I. and?’ I2: yieldinglyt to
ther object is to provide a serviceable nipple com
prising complementary sections having arcuate
gether when no rod vor brace means I0 is inserted
arranged slots adapted to receive or interlock with
arcuatetrack means of spaced and adjustably con
intorthe bore 15 (Figs4 and_}5)1r _
_v 7
.
I. t
. With the Wirering _l_'l_ yieldingly holding the
trolled'clamping members whereby the nipples
complementary ‘sections. | Land ‘[2 together, the
in the unclamping relation of the members may
latter may be separated or expanded slightly on
insertion of a rod or brace gill intorthe companion
be displaced‘ arcuately; to predetermined positions
(and thereafter readily clamped in such predeter-w 30 semi-circular grooves ill. I, The reactive force im
mined positions. Other objects, advantages and
functional and structural. ffeatureso-f the inven
tion will be apparent from the following detailed
‘ parted by the interrupted. annular wire" but re
silientring I‘! causes'gwallsof the grooves 14 to
engage the rodLthus initially and.v slightly clamp
speci?cation taken with the accompanying ‘draw
ing wherein;
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.
Fig. 1 is a fragmentary part of a demountable
toy removably 'held together by‘connectors ac
.35
'of- a‘ nipple or holder N also embodies an arcuate
slot l8ladaptedito-receiveethe curved or annular
i
track, flange or. rim I9 cf-a' connector or coupling
Fig, 3 is a view similar to Fig. ‘2, however with"
generally denoted G comprising companion nipple
sustaining detachabl'yf.associated discs 26 "each
the nipples,‘ spring and elampingfmeans removed
v;
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‘
Fig. 4_is an elevational view of an expandible
. andcontractible rod holding nipple.’ ‘I Fig.5 is a plan View of Fig. 4. )
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including the inwardly, disposed complementary
hub sections orbosse's 2| 'each'h'aving a semi
~as circular
groove 22." ' vlijach of the complementary
hub sections or guide means 2|‘ also'includes a
flat'face 23 adapted to disengageablycontact in
1. Fig. 6‘ is, a view similar to Figgl illustrating a
rod yieldinglyh clamped between complementary
separablesections of a nipple. -'
_ Fig. 7 is a side view of Fig. 4.
1"
‘
.
‘
‘the assembled‘r'elation'of the 'disc‘slgljwhereupon '
50
, Fig. 8 is an exploded vandperspective view of
Fig. 6.1?-
.
Each of the complementary section-s H and I2 .
'1 Fig.2 ‘is a sectional view cnvthe line 2—2 of
fromthe connector.
.ment of the complementary clamping sections II
and I2.
cording to one embodiment of the invention.
Fig. 1.
ing the latterv and even in such clamped relation
the retaining. ring I‘! precludes complete detach: .
'
Fig. 9 is an exploded view of thesupport or con
nector vfor .?rmly clamping the complementary
seemed ‘the. nipples against the ‘reds’;
av
thegrooves 22" ‘areinali'nement to form a cylin
drical, guide ‘bore ‘for the reception of :3, shank
24 oftalscrew or'bolt 25 adapted to be removabl'y
receivedv inpthe openings 26in the discs 29 which
are held together-against separation by a clamp‘
‘ing nut 21 mounted on the threaded shank};
2,410,874
3
which in part is surrounded by a helicoidal spring
28 disposed underneath the slotted head 29 of
the screw or bolt 25 in the mating cutaway por
tions 3!! and 3| de?ning the circular. recess gen
erally indicated 32. The openings 26 may be said
to be the‘mouths for the bore formed by the
semi-circular grooves '22 and for the circular re
cess 32. By reason of the openings 26, the discs
4
together with the herein connector C and rod
holders N.
The spring 28 in all of the embodiments dis
closed also serves to retract discs 20 against the
rod holders N after the latter are inserted be
tween the discs of the connector C.
In Fig. 1 six rod holders N are ‘removably
mounted on each connector C.
Of course more
than six or less than six may be mounted thereon
or members 20 may be said for purposes of speci
10 as is well understood, and if desired only one
?cation to be annular.
rod’ and holder may be so mounted. At any rate,
By unloosening the clamping member or nut 21
each connector C is adapted to removably clamp
the companion discs 20 may be moved apart
a plurality of rod supports or holders N.
slightly against the resistance o?ered by the
Various changes may be made in details of
helicoidal spring 28. Hence the nipples or rod
holders N may be inserted between the discs so 15 construction and arrangement of parts without
departing from the spirit of the invention or sac
that the curved tracks or ?anges l9 readily snap
ri?cing any of the advantages thereof inherent
into the arcuate slots H! of the complementary
therein.
sections H and I2, these slots having an axis or
We claim:
loci of curvature normal to the axis of the
1. In a knockdown toy, brace means, a nipple
nipple N. Or in other words each nipple is inter
locked with the companion discs 26 which by
reason of the tracks I!) fitting into the arcuate
comprising complementary sections de?ning a
bore for removable reception of said brace means,
each of said sections embodying an arcuate slot,
spaced members having arcuate track means re
guide slots l8 permit the nipples to be swiveled
or rotatably displaced along the tracks l9, that is
about the origin of the companion discs 20 to a 25 movably projecting into said slots for guiding dis
placement of said nipple about said members, and
desired position after which nut 27 is again tight
means for clamping said track means against
ene'd. By such action the complementary sec—
said sections for clamping the latter against said
tions H and 12 of each nipple ?rmly clamp
against a rod or brac'el?.
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brace means.
2. In a knockdown toy, brace means, a nipple
With'the arrangement described, a nipple may 30
comprising complementary sections de?ning a
be readily mounted between the companion discs
bore for removable reception of said brace means,
20 or may be conveniently removed therefrom.
each of said sections embodying an arcuate slot,
Even though mounted between these discs a nip
means for yieldably retaining said sections to
ple may be retained by the tracks I9 to permit
gether, spaced members having arcuate track
displacement thereof ‘along the curved tracks.
means removably projecting into said slots for
However each nipple separates slightly upon in
sertion of a rod or brace l0 therein against the
guiding arcuate displacement of said nipple about
resistance of the retaining spring-ring ll’. Should
said members,‘ and means for clamping said track
means against said sections for clampingthe lat
the rod be removed from a nipple, the spring ring
I8 immediately contracts and closes the comple 40 ter against said brace means.
mentar'y sections ‘II and I2 to bring their ?at
faces Hi again together orin juxtaposition. The
grooves 18 of these sections Tform reduced neck
portions 33 merged with the upper semi-circular
portions 34 de?ning the circular head of a nipple
and the semi-'circular'conical portions -35 de?ning
the substantially-frusto-conical portions of the
nipple.
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3. In a knockdown toy, brace means, a nipple
comprising complementary sections de?ning a
bore for removable reception of said brace means
each of said sections embodying an arcuate slot
and a groove spaced from ‘said slot, an inter
“rupited rin'g con?ned in said grooves‘for yieldingly
retaining said sections together, spaced members
having arcuate track means removably project
The retaining ring I‘! as previously stated yield
ing into said slots for guiding arcuate displace
ingly holds the complementary sections of a nip-' 50 ment of said nipple about said members, vand
ple together and thereby permits convenient
means carried bysaid members for adjusting‘the
handling thereofv as 'a unit and as such may be
quickly assembled with or attached to the sup
port ‘or connector therefor characterized by the
latter to removably clamp said track means.
4. In a knockdown toy, brace means, a nipple
"spaced discs 20.
In the embodiment according to Fig. '11, the
bore for removable reception of said‘br'ace means
spring 28 is disposed in a recess MI in the-boss M
comprising ‘complementary sections de?ning a
and each of sai'dsections ‘embodying ‘an arcuate
slot, ‘spaced discs having annular track means
removably projecting into "said slots for guiding
in ‘one 'of the vdiscs 20 "both vof which embody the
arcuate displacement of said nipple about said
alined ‘openings 26 for receiving and guiding
shank 24 of the ‘bolt'25. In Fig. 2 the bosses or 60 discs, and means for removab1y clamping ‘said
hubs 2| extendappreciably beyond the-discs and
are separable Whereas in Fig. 11 the bosses iii are
not split nor do they extend appreciably beyond
their respective 'annular'rims 19.
In other as
pects the form according to Fig. 11 is along the
lines illustratedin' Figs. 1-10.
By the present invention the frame work
broadly designated F '(Fig. 1) for a structural toy
maybe readily built ‘up or put together. No
special skill is required. vSince the parts are re
movably associated the frame work may be read
ily disconnected whereby the parts may occupy
a relatively small space. "The. type of framework
shown'in Fig. lis merely’ illustrative and obvi
track means against said-sections for-removably
clamping the latter against said‘brace means.
5. In a knockdown toy, brace means, a nipple
comprising complementary sections de?ning a
bore for removable reception-of said’ brace means
and each of said sections embodying‘an arcuate
slot, spaced annular 'd'is'cs having arcuate track
means removably projecting into said slots for
guiding arcuate displacement of said nipple about
said discs, and a bolt andnuttcarried by said discs
for clamping said track means against said sec
tions for clamping the latter against said brace
. means.
‘ 6. In a knockdown-toy, brace means, ‘anipple
ously many other types of structures may be put 75 comprising complementary sections vde?ning "a
2,410,874
6
bore 'for removable reception of said brace and
each of said sections embodying an arcuate slot,
for removable-reception of said brace means'and
each of'saidsections embodying an arcuate slot,
‘spaced means having‘ arcuate track- means re
spaced members
movably projecting ‘into said slots for guiding
arcuate displacement of said nipple about said
removably straddling ' said
nipples and having guide means-arcuate track
“means; extending from saidmembers and remov
ably projectinginto said slots for guiding arcu
ate-‘displacement of said nipple‘ relative to said
spaced means,‘ a bolt projecting through said
spaced means, and a nut removably mounted on
said bolt for moving said spaced means together
members, a bolt ‘having a‘ head and including a
for removably clamping said track means against
shank-slid-ably andremovably disposed in- said
said sections for clamping the latter against said 10 "guide-means and including a'threaded portion,
brace
means.
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and an internally threaded nut mounted on said
‘
' 7‘. In a ‘knockdown toy, brace means,'a~nipple
‘comprising complementary sections de?ning a
bore for removable reception of said brace means
and each of said'sections embodying an arcuate
slot, spacedmembers having'arcuate track means
removably projecting into said slots for guiding
arcuate displacement of said nipple about said
members and‘ having alined guide means, a bolt
having a shank removably disposed in said guide
means and‘ having a threaded portion, and a nut
mounted on said threaded portion for clamping
said‘ track means against said sections and the
latter against said brace means.
8. In a knockdown toy, brace means, a nipple
comprising complementary sections de?ning a
bore for removable reception’ of said brace means
‘and each of said sections embodying an arcuate
slot, spaced discs having arcuate track means re
movably projecting into said slots for guiding
arcuate displacement of said nipple about said
discs and having alined guide means, a bolt hav
ing a head and a shank extending from said head
and removably receivable in said guide means
‘threaded portion ,for removably clamping said
members against said nipples and for-removably
clamping said sections against said plurality of
brace means;
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12. In a knockdown toy, brace means, a nipple
comprising separable complementary and tapered
‘sections defining a bore for‘ removable reception
of said brace meansand each'oi said sections
embodying an exterior arcuate slot,"spaced_ mem
bers having arcuate track means removably pro
jecting into said slots for guiding'arcuate dis
placement of said nipple relative to said members,
and means carried by said membersfor adjust
ably clamping said track means against said sec
tions for adjustablyclamping the latter against
said brace means.
'
13. In a knockdown toy, brace means, a nipple
comprising complementary separable sections de- ?ning a bore for removable reception of said brace
means and each of said sections embodying an
arcuate slot, spaced members straddling said
nipple and having arcuate track means remov
ably projecting into said slots for guiding arcuate
and including a threaded portion, an internally 35 displacement of said nipple relative to said mem
threaded nut mounted on said threaded portion,
bers, bosses extending from said members and
and a spring interposedbetween said headland
beyond said track means and including guide
one of said discs for'resisting the separation of
means, a bolt having a head and including a
the latter.
-
shank removably disposed in said guide means
9. In a knockdown toy, brace means, a nipple 40 and embodying a; threaded portion, and an in
comprising complementary sections de?ning a
ternally threaded nut mounted on said threaded
bore for removable reception of said brace means
portion for clamping said track means against
andeach of said sections embodying an arcuate
said
sections 'and‘the latter‘against said brace
slot, spaced annular discs having arcuate track
means removably projecting ‘into said slots for
14, In a knockdown toy, brace means, a nipple
guiding arcuate displacement of said nipple about
comprising complementary‘ and separable sections
said discs and having alined openings and in
de?ning a bore for removable reception of said
cluding recessed means in alinement with said
brace means and each ‘of said sections embodying
means.
openings, a bolt having a head and a shank ex
tending from said head and removably receivable
in said‘openings andincluding a threaded por
tion, an internally threaded nut mounted on said
threaded‘ portion, and a helicoidal spring sur
rounding said shank and disposed in said recessed
means anducooperating with said head to resist
separation of said discs.’
l0. In a knockdown toy, brace means, a nipple
comprising complementary separable sections de
,.
‘
_
_
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/
an. exteriorly arranged arcuate slot, spaced'an
nular discs removably straddling said nipple and
having arcuate track means removably project
ing into said slots for guiding arcuate displace
ment of said nipple relative to said discs, and ,
adjustable means for‘ actuating said discs for
clamping said track meansy'against said'sections
and the latter against said ‘brace means;
i is
15. In a device for sustaining a rod, a'spli
nipple comprising complementary sections hav
?ning a bore for removable reception of said
ing separable and contiguous internally disposed
brace means and each of said sections embody 60 faces and complementary grooves interrupting
ing an arcuate slot, spaced members having arcu
said faces and de?ning a bore for removably
ate track means extending from said members
receiving said rod, said sections embodying .eom
and removably projecting into said slots for
plementary head portions and having arcuate
guiding arcuate displacement of said nipple about
slots disposed below said head portions, spaced
said members, bosses extending from said mem 65 members removably straddling said sections and
bers and including guide means, abolt having a
having arcuate means removably extending into
head and including a shank slidably disposed in
said slots for movably guiding displacement of
said guide means and embodying a threaded
said nipple relative to said members, and means
portion, and an internally threaded nut mounted
for removably clamping said arcuate means
on said threaded portion for removably clamping 70 against said sections for removably clamping the
said track means against said sections to remov
latter against said rod. .
ably clamp the latter against said brace means.
16. In a device for sustaining a rod, a split
11. In a knockdown toy, a plurality of brace
nipple comprising complementary sections having
separable and contiguous internally disposed faces
complementary separable sections de?ning a bore 75 and complementary grooves interrupting said.
means, a plurality of nipples each comprising
2,410,874
7
faces and de?ning a bore for removably receiving
said rod, said sections embodying complementary
head portions and having arcuate slots disposed _
below said head portions, spaced members re
movably straddling said sections and having arc
uate means removably extending into said slots
for removably guiding displacement of said nipple
relative to said ‘members, spring means closely
embracing and surrounding said head portions
for yieldingly retaining said sections together,
and means for removably clamping said arcuate
means against said sections for removably clamp
ing the latter against said rod.
8
dling said sections, said members and sections
having disengageable interlocking arcuate means
for movably guiding arcuate displacement of said
nipple relative to said members, spring means
closely embracing and surrounding said sections
for yieldingly retaining said sections together,
and means for removably clamping said mem
bers against said sections for removably clamp
ing the latter against said rod.
21. In a knockdown toy, brace means, a nipple
comprising companion sections adapted to be
spread apart and having complementary grooves
de?ning a bore for removable reception of said
brace means and each of said sections embodying
slot
means disposed in a path through which an
15
prising complementary sections having separable
arc passes, spaced members straddling said sec
and contiguous internally disposed faces and com
tions and having arcuate track means removably
plementary grooves interrupting said faces'and
projecting into said slot means for controlling
de?ning a bore for removably receiving ‘said
arcuate displacement of said nipple relative to
member, said sections embodying complementary
head portions and having arcuate slots disposed 20 said members, said members each having guide
1'7. A split nipple for receiving a member com
below said head portions, the axes of the curva
ture of said slots being normal to the axis of said
nipple, and split spring means closely surround
ing said nipple for yieldingly retaining said sec
tions against said member.
18. A split nipple for receiving a member com
prising complementary sections having separable
and contiguous internally disposed faces and
complementary grooves interrupting. said faces
means, a bolt having a head and including a shank
removably disposed in said guide means and
embodying a threaded portion, and an internally
threaded nut mounted on said threaded portion
for removably clamping said track means against
said sections and the latter against said brace
means.
22. In a knockdown toy, brace means, a nipple
having head means and comprising complemen
and de?ning a bore adapted to removably receive 30 tary sections adapted to be spread apart and
de?ning a bore for removable reception of said
said member, said sections embodying comple
brace means and each of said sections embodying
mentary head portions and having arcuate slots
slot vmeans disposed in a path through which an
disposed below said head portions, the axes of
arc passes and disposed below said head means,
the curvature of said slots being normal to the
axis of said nipple, and an annular interrupted 35 spaced members straddling said sections and
having arcuate track means removably projecting
spring surrounding and embracing said head por
into said slot means for controlling arcuate dis
tions for yieldingly retaining said sections to
placement of said nipple relative to said mem
gether.
_
bers, said members each having guide means, a
19. In a device for sustaining a rod, a split
nipple comprising complementary sections having
separable and contiguous internally disposed faces
and complementary grooves interrupting said
faces and de?ning a bore for removably receiving
said rod, spaced members removably straddling
said sections, said members and sections having
disengageable interlocking arcuate means for
movably guiding arcuate displacement ‘of said
nipple relative to said members, and means for
removably clamping said members against said
sections for removably clamping the latter against
said rod.
20. In a device for sustaining a rod, a split
nipple comprising complementary sections having
bolt having a head and including a shank re
movably disposed in said guide means and em
bodying a threaded portion, and an internally
threaded nut mounted on said threaded portion
for clamping said track means against said sec
tions to clamp the latter against said brace means.
23. A nipple for receiving a brace member com
prising juxtapositioned sections adapted to be
spread apart and having contiguous internally
disposed faces and complementary internally
disposed grooves interrupting said faces and de?ning a bore adapted to removably receive said
member, and each of said sections havingexterior
slot means disposed in a path through which an
arc passes and having an axis substantially nor
separable and contiguous internally disposed faces
and complementary grooves interrupting said 55 malto the axis of said bore.
HENRY GREENBERG.
faces and de?ning a bore for removably receiv
ing said rod, spaced members removably strad
JOHN J. O’CONNELL.
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