U.S. patent number 3,825,299 [Application Number 05/271,631] was granted by the patent office on 1974-07-23 for lawn swing.
Invention is credited to Romeo Oliva Gaucher.
United States Patent |
3,825,299 |
Gaucher |
July 23, 1974 |
LAWN SWING
Abstract
A lawn swing having a level swing platform which is suspended
for swinging movement in a supporting frame by hinged swing support
members, hinged connections defining corners of a parallelogram so
that the platform remains level when it swings; and a centrally
located strut having a hinged connection with the frame and the
platform for supporting a table centrally of the platform, the
table swinging in and tangential to an arc having as its center the
hinged connection of the strut with the supporting frame.
Inventors: |
Gaucher; Romeo Oliva
(Bonneyville, Alberta, CA) |
Family
ID: |
23036400 |
Appl.
No.: |
05/271,631 |
Filed: |
July 13, 1972 |
Current U.S.
Class: |
297/157.1;
297/245; 472/125; D6/347; 297/273 |
Current CPC
Class: |
A63G
9/02 (20130101); A47C 3/0255 (20130101) |
Current International
Class: |
A47C
3/02 (20060101); A63G 9/00 (20060101); A63G
9/02 (20060101); A47b 039/00 () |
Field of
Search: |
;272/85,86,87,88,89,90,91,92 ;297/273,157,276,277,370,317,245 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Pinkham; Richard C.
Assistant Examiner: Brown; Theatrice
Attorney, Agent or Firm: Carver and Company
Claims
I claim:
1. A lawn swing including:
a. a framework having a pair of spaced upstanding side frames,
b. overhead braces connecting the side frames,
c. a swing supported by the framework, the swing having a
substantially rectangular level platform and supporting members of
equal length having lower hinged connections with corners of the
platform and upper hinged connections with the overhead braces the
upper hinged connections lying in a common plane parallel to the
platform and being spaced apart a distance the same as the distance
between said lower hinge connections so that the platform, as it
swings, remains level,
d. a center strut having a lower hinged connection with the
platform and an upper hinged connection with the overhead braces so
as to swing with the platform,
e. a table top rigidly secured to the center strut and spaced above
said platform so as to swing in an arc having as its center the
upper hinge connection of the center strut.
2. A lawn swing as claimed in claim 1 in which each hinged
connection includes a flexible strap connecting hingedly connected
members for supporting said members in spaced relationship.
3. A lawn swing as claimed in claim 2 in which the flexible strap
is a section of rubber belting having a substantially
non-stretchable rubber covered core.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to lawn swings.
2. Prior Art
Lawn swings generally have a level platform suspended by parallel
swing supports in a supporting frame which can be positioned on any
level ground surface so that the platform when swung remains level
at all times. Occupants of the swing are normally seated on a pair
of facing seats secured to the swing supports, the swing being
operated in a known manner.
Hinged connections of the swing supports of both the platform and
the supporting frame usually have a hinge pin providing a fixed
hinge axis and, further ordinarily have metal to metal contact.
Prior art swings, unless well lubricated, are usually noisy in
operation. Further, dimensional inaccuracies of moveable components
of prior art swings can result in binding of the hinge connections
and consequent improper operation and straining of the swing.
SUMMARY OF THE INVENTION
The present invention provides a lawn swing having hinged
connections of which not only provide silent operation of the swing
but which automatically adjust for dimensional inaccuracy of
movable components. Hinged connections of moveable components of
the present invention do not require lubrication yet do not wear in
the manner of conventional hinge joints having metal to metal
contact, so as to substantially eliminate wear.
The lawn swing of the present invention, further, has a table which
is mounted to enable objects such as ashtrays, liquid holding
glasses and the like to rest thereon with spillage when the swing
is in operation.
The present lawn swing has a supporting frame having a pair of
upstanding side supports, a substantially rectangular, horizontal
platform, swing supports each having a hinged connection at a lower
end to platform corners and at an upper end to the supporting
frame, the hinged connections being arranged in the form of a
parallelogram of which the platform is one side so that the
platform remains level as it swings.
The hinged connections include flexible straps which space upper
and lower ends of the swing supports from both platform and
supporting frame.
A detailed description following, related to drawings, gives
exemplification of apparatus according to the invention which,
however, is capable of expression in means other than those
particularly described and illustrated.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective of a lawn swing in accordance with the
invention,
FIGS. 2 and 3 are side and end elevations, respectively, of the
lawn swing,
FIG. 4 is an enlarged portion of the lawn swing.
DETAILED DISCLOSURE
Figs. 1, 2, and 3
A lawn swing of the invention, generally 10, has a supporting frame
11, the frame having a substantially rectangular base 12 formed of
a pair of longitudinally extending members 13 and 14 and a pair of
transverse members 15 and 16. The supporting frame also includes a
pair of spaced apart hoop-like side supports 21 and 22 which extend
upwards from the longitudinal members 13 and 14, in spaced apart
relationship and which, see FIG. 3, slope slightly inwards over the
base. The side supports are connected by a pair of horizontal
transversely extending braces 23 and 24 which lie in a common plane
parallel to the base 12. The base members, the side supports, and
the braces are tubular steel and have a welded connection so that
the frame has transverse as well as longitudinal stability.
A swing proper, generally 25, is suspended from the braces 23 and
24 for swinging movement longitudinally of the supporting frame.
The swing 25 has a substantially rectangular platform 26, length of
which is the same as distance between the braces 23 and 24 and
width of which, see FIG. 3, is substantially less than width of the
base 12 so as to provide clearance with the side supports 21 and
22.
The platform is suspended from the braces 23 and 24 by means of
bowed swing supports 27, 28, 29 and 30. The swing supports are of
equal length, have hinged connections at lower ends with corners of
the platform and at upper ends with the braces 23 and 24. A seat 32
is mounted between the supports 27 and 29 on L-shaped arm rests 33
and 34 secured to the supports 27 and 29.
A seat 38 is mounted in a similar manner between the supports 28
and 30.
A vertical center strut 41 has a hinged connection at 43 midway
between ends of a longitudinal brace 44 which extends between the
transverse braces 23 and 24. The center strut has lower leg 45
which has hinged connections at 46 and 47 with and centrally of the
platform 26 midway. The center strut 41 has laterally extending
arms 48 and 48.1 on which tables 49 and 50 are rigidly mounted,
upper surfaces of the tables being normal to the center strut.
Fig. 4
fig. 4 shows detail of hinged connection of the support 27 and the
center strut 41 with the platform 26. The support 27 is connected
by a bolt 51 to an upper end portion 52 of a flexible strap 53. A
lower end portion 54 of the strap is bolted to the platform 26,
length of the strap 53 being such that the support and the platform
26 are spaced apart about one and one half inches. The strap 53 can
be a section of belting of a type having an inner fiber core and a
rubber outer cover. This type of belt, which flexes readily but
does not stretch, is well known and, consequently, requires no
further description.
The center strut is also connected to the platform by a flexible
strap 55. Similar hinged connection, i.e. by means of flexible
straps are used for connecting the supports 28, 29 and 30 to the
platform and braces. There is, therefore no metal to metal contact
of any moveable components.
OPERATION
Fig. 2
hinged connections of the swing supports 27, 28 and 29, 30, with
the braces 23 and 24 and the platform 26 are, in effect, corners of
a pair of parallelograms. The platform which forms one side of the
parallelogram therefore remains horizontal as it swings, e.g., to
broken outline position 26.1, FIG. 2. The tables, however, swing in
an arc having the hinged connection 43 as its center. Objects
placed upon the tables, consequently, do not tend to slide back and
forth as the table swings, and liquid refreshment in glasses which
may be placed upon the table does not tend to spill.
The type of hinged connection used for connecting all moveable
components of the lawn swing enables relative silent operation of
the swing as there is no metal to metal contact of moving parts.
Further, as all moveable components are spaced apart none of the
hinge connections has a fixed hinge axis, so that, regardless of
minor dimensional inaccuracies in the fabrication the swing
operates smoothly.
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