U.S. patent number 3,698,123 [Application Number 05/204,896] was granted by the patent office on 1972-10-17 for structural toys.
Invention is credited to Carl R. Heldt.
United States Patent |
3,698,123 |
Heldt |
October 17, 1972 |
STRUCTURAL TOYS
Abstract
A round rod is bifurcated at both ends in a plane. Near each
end, in the plane, a hole is drilled. Each end is slotted in the
plane back from the hole for a short distance. Small round rods are
provided having the diameter of the hole. Short lengths of tubing
are provided to fit over the bifurcated round rod. When a small rod
is placed in one of the holes in the bifurcated rod and the tubing
is slid toward the small rod, the latter is locked in place in the
jaws of the bifurcation. Small tori are provided, made of round
stock having the diameter of the holes in the round rod; these tori
can be placed in jaws of the bifurcated rod, instead of the small
rods. Small wheels having rims of the size of the holes in the rod
also are provided. Long tubes also are provided to connect two
bifurcated rods and to act as locks. Out of these elements
extensive rigid structures can be built.
Inventors: |
Heldt; Carl R. (Tucson,
AZ) |
Family
ID: |
22759931 |
Appl.
No.: |
05/204,896 |
Filed: |
December 6, 1971 |
Current U.S.
Class: |
446/120 |
Current CPC
Class: |
A63H
33/101 (20130101) |
Current International
Class: |
A63H
33/10 (20060101); A63H 33/04 (20060101); A63h
033/10 () |
Field of
Search: |
;46/23,27,28,29 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Mancene; Louis G.
Assistant Examiner: Lever; J. Q.
Claims
What is claimed is:
1. A structural toy comprising:
a rod;
a transverse hole therethrough;
a slot connecting said hole with one end of said rod;
a slot in said rod extending from said hole away from said one
end;
a locking tube surrounding said rod; and
a torus passing through said transverse hole.
2. A structural toy comprising:
a round rod having a selected first diameter;
said rod having a round hole passing therethrough normal to the rod
axis, said hole having a second diameter less than said first
diameter;
a pair of opposed jaws in one end of said rod, the space between
the jaws forming a wide slot connecting said hole with one end of
the rod, the slot opening being less than said second diameter;
a longitudinal narrow slot in said rod in a plane comprehending the
axis of said hole and extending from said hole in the direction
away from said one end;
a tube surrounding said round rod and having a close sliding fit
thereon; and
a ring of torus form, the diameter of the material composing the
ring being equal to said second diameter, said ring passing through
said round hole and being embraced thereby.
3. A structural toy comprising:
a first component comprising a round straight rod having a selected
first diameter, said rod having a round transverse hole near one
end of the rod and passing therethrough normal to the rod axis,
said hole having a second diameter less than said first
diameter;
a pair of opposed jaws in said one end of said rod, the space
between the jaws forming a wide slot connecting said hole with said
one end of the rod, the slot opening being less than said second
diameter;
a longitudinal narrow slot in said rod in a plane comprehending the
axis of said hole and also the axis of said rod and extending from
said hole in the direction away from said one end;
a second component passing through and embraced by said round
transverse hole in the rod; and
a third component in the form of an open tube having a close
sliding fit surrounding said rod, whereby said third component can
be slid toward said one end of the first component rod, thereby
locking said second component in said transverse hole.
4. A structural toy in accordance with claim 3 in which said second
component is a small rod having a diameter approximately equal to
said second diameter.
5. A structural toy in accordance with claim 3 in whoch said second
component is a ring of torus form, the diameter of the circular
cross section of the ring being approximately equal to said second
diameter.
6. A structural toy in accordance with claim 3 in which said second
component is a wheel having a rim of circular section with a
diameter approximately equal to said second diameter and having a
disc within the ring, said disc having a central round hole having
a diameter approximately equal to said first diameter, whereby a
second rod having the first diameter can be passed through and held
by the central round hole.
7. A structural toy in accordance with claim 3 in which said third
component is a locking tube surrounding said rod adjacent said
second component and distal to said one end of the rod, whereby
said second component is locked into the transverse hole in the
rod.
8. A structural toy in accordance with claim 3 in which said thord
component is an extension and/or locking tube having one end
surrounding the other end of said rod, whereby another rod having
said first diameter may be inserted into the other end of the
extension tube.
Description
BACKGROUND OF THE INVENTION
This invention relates to toys and particularly to construction toy
sets composed of building elements which can be combined in many
ways to build structures.
Many structural toys have been devised and marketed, usually
consisting of long elements connected by cubes or spheres to form
an architectural structure or a replica of a machine or vehicle.
The elements of such toys are of great variety; many of them are
fairly complex, particularly the connecting elements, and expensive
to manufacture. Some of them suffer from the fault of rapid wear,
so that after a little use the parts are no longer friction tight
and cannot be used.
The present invention, on the other hand, provides elements of
exceedingly simple design, easy and cheap to make and easy to
understand and use, and so adapted to be given to very young
children. Further, the elements, although fastening together by
friction, are also locked together so that wear is neutralized and
the life of the toy is long.
SUMMARY OF THE INVENTION
The invention provides only three basic elements: rods, tubes and
rings. The rods are round, of two diameters and of lengths as
desired. The tubes are all of the same inside diameter, to slip fit
over the larger rods, and of lengths as desired. The rings or tori
are all made of round stock equal in diameter to that of the
smaller diameter rods, with toroidal diameter as desired. Some of
the rings may enclose a disc having a round center hole of the
diameter of the larger rods, thus forming a wheel with a rim of
circular cross section. All of the larger size rods are slotted and
bifurcated at each end, with a transverse round hole near each end
having the diameter of the smaller of the rods.
Of course many other special elements, such as pulleys, cams,
cylinders and ornamental shapes may be provided in addition, for
constructing particular machines and structures.
One object of this invention is to provide a structural toy
composed of a few simple elements.
Another object of this invention is to provide a structural toy
composed of rods, tubes, rings and wheels.
Still another object of this invention is to provide an inexpensive
and simple structural toy which not only is entertaining but also
promotes manual dexterity and improves manipulative skill.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a perspective view of a toy element made from large
diameter rod, bifurcated at each end.
FIG. 2 is an enlarged view of one end of the rod of FIG. 1.
FIG. 3 depicts one toy element having the form of a torus.
FIG. 4 illustrates the combination of the elements of FIGS. 1, 3
and 5 to form a rigid structure.
FIG. 5 depicts a short tube for use on the large diameter rod of
FIG. 1 to lock a jaw thereof onto a small diameter rod, a ring or a
wheel.
FIG. 6 depicts a long tube for the same use as the short tube of
FIG. 5 and, in addition, for connecting two rods, FIG. 1.
FIG. 7 depicts a wheel having a small diameter rim and a large
diameter center hole.
FIG. 8 is a cross section of FIG. 7 on the line 8--8.
FIG. 9 depicts a toy element consisting of a small diameter
rod.
FIG. 10 depicts a pulley.
FIG. 11 illustrates the combination of a rod, FIG. 1, with two
locking tubes, FIG. 5, and two small diameter rods, FIG. 9, to form
a rigid structure.
FIG. 12 illustrates the combination of two rods, FIG. 1, one long
tube, FIG. 6, and two small rods, FIG. 9, to form a rigid
structure.
FIG. 13 illustrates the combination of two rods, FIG. 1, with one
locking tube, FIG. 5, a small rod, FIG. 9, and a wheel, FIG. 7, to
form a rigid structure.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring now to FIG. 1, one component of the structural toy
consists of a round rod, 10, of selected diameter and length,
bifurcated and slotted at each end. It bears near each end a
transverse round hole. One embodiment of this element may be made,
for example, from one-half inch diameter round wood dowel rod
stock, and may have a length of 51/2 inches. Each end is narrowly
slotted for a distance of 2 inches by a central, longitudinal cut,
as shown at 11 and 12. Two one-quarter-inch holes, 13 and 14, are
drilled in the common plane of the slots 11 and 12, centered about
one-half inch from the ends of the rod. From each hole to the near
end of the rod, in the plane of the slots, the wood is cut away in
a wide slot to form two entrance jaws or lips so that, in
conjunction with the springiness of the narrowly slotted rod, a
piece of one-quarter-inch round material, such as a wood dowel, can
be forced between the jaws and be seated and retained in the
quarter-inch hole.
The bifurcated end of the rod 10 is more clearly illustrated in
FIG. 2, in which the slot 11 provides spring tension permitting the
jaws 15 to be forced apart enough to allow a small rod to be placed
in the hole 13, then holds the rod there by spring tension on the
jaws 15 after they have sprung back into the position shown in the
figure.
FIG. 3 illustrates a torus or ring 16, preferably made of metal,
and having a round cross section, as illustrated at 17. In the case
of this illustrative example, in which exampled dimensions are
mentioned to illustrate how the parts fit together, the diameter of
the stock composing the ring is one-quarter inch. Therefore this
ring can be forced into one of the one-quarter holes, 13 or 14, of
FIG. 1. This operation is illustrated in FIG. 4, in which the
bifurcated end 18 of the wood rod 19 embraces the quarter-inch
material of ring 16.
FIG. 5 illustrates a short length of tubing, 21, having an inside
diameter, d, which is very slightly larger than the diameter of the
rod 10 of FIG. 1, so that the tube is a sliding or slip fit on the
center or unslotted part of the rod. As a dimensional example, the
tube 21 may be made of plastic with a one-sixteenth-inch wall and
have an inside diameter, d, several thousandths of an inch larger
than the rod diameter. Its length may be, for example,
three-fourths of an inch.
FIG. 6 illustrates a longer length, 22, of the tubing depicted in
FIG. 5, for example, 13 inches long, with inside diameter d.
FIGS. 7 and 8 illustrate a wheel consisting of a rim, 23, having a
one-quarter-inch circular cross section and having a middle part
consisting of a disc, 24, secured to the rim 23. The disc 24 has a
central round hole 26 with a diameter, for example, slightly larger
than one-half inch, so that it is a sliding fit on the central part
of rod 10.
FIG. 9 depicts a small rod having a diameter equal to that of the
holes 13 and 14, FIG. 1. As a dimensional example, this rod may
consist of a one-quarter-inch wood dowel. The length may be as
desired, for example, ten inches.
A great variety of accessory parts can be added to the basic
elements shown in FIGS. 1, 3, 5, 6, 7 and 9, for use in building
specific models. As a single illustrative example, the pulley 27 of
FIG. 10 is shown, having a center hole 28 which is a sliding fit on
the center part of rod 10.
The elements or structural toy components shown singly in FIGS. 1,
3, 5, 6, 7 and 9 may be combined in limitless ways to form
architectural and mechanical structures. FIGS. 4, 11, 12 and 13 are
illustrative.
In FIG. 4 the rods 19, 29 and 31 are clipped, by means of a
bifurcated end of each, to the rings 16. On each rod there is a
short length of tube 21A, 21B and 21C, each being identical with
tube 21. After each of the three rods has been snapped onto the
ring, its tube is pushed toward the ring, forcing the jaws of the
bifurcation together and locking the rod to the ring.
FIG. 11 illustrates the use of rod 10 with two locking tubes 21 to
fasten together two one-quarter-inch rods, 32 and 33.
FIG. 12 illustrates the use of two rods, 10, extended and connected
together by a long tube 22, to connect two one-quarter-inch rods 34
and 36, which need not be parallel. The tube 22 serves to lock an
end of each rod 10 to its small rod.
FIG. 13 illustrates the use of a wheel, 37, as shown in FIG. 7, to
connect a one-half-inch-diameter rod 38 to another similar rod 39
and to a one-half-inch-diameter rod 38 to another similar rod 39
and to a one-quarter-inch rod 41. A short tube 21 serves to lock
rod 39 to the rim of wheel 37. The center hole of the wheel serves
the additional dual purposes of locking the bifurcated end of rod
38 to rod 41, and of immobilizing the wheel so that it cannot
rotate on the rod 38.
* * * * *