U.S. patent number 3,855,718 [Application Number 05/420,457] was granted by the patent office on 1974-12-24 for adjustable mounting for work-objects and the like.
Invention is credited to Carolyn J. Parsons, Stoner Parsons.
United States Patent |
3,855,718 |
Parsons , et al. |
December 24, 1974 |
ADJUSTABLE MOUNTING FOR WORK-OBJECTS AND THE LIKE
Abstract
A spherical element is held between a pair of generally flat and
contacting plates one of which has a recess for receiving a portion
of the spherical element, the other of said plates having a round
aperture of smaller diameter than the diameter of said spherical
element and in which a portion of said spherical element seats. A
screw-threaded shank is connected to the last-mentioned portion of
said spherical element and extends through and projects from the
round aperture referred to hereinbefore. A nut screw-threadedly
engages the shank. A brace is secured to said screw-threaded shank
by said nut; and A work supporting member carried by said
brace.
Inventors: |
Parsons; Carolyn J. (Paris,
KY), Parsons; Stoner (Paris, KY) |
Family
ID: |
23666556 |
Appl.
No.: |
05/420,457 |
Filed: |
November 30, 1973 |
Current U.S.
Class: |
38/102.2 |
Current CPC
Class: |
D05B
91/04 (20130101) |
Current International
Class: |
D05B
91/00 (20060101); D05B 91/04 (20060101); D05c
001/04 () |
Field of
Search: |
;38/102.2
;285/18,260,420 ;160/380 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
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|
|
412,998 |
|
Mar 1946 |
|
IT |
|
467,574 |
|
Dec 1951 |
|
IT |
|
Primary Examiner: Lawson; Patrick D.
Claims
Having thus described our invention what we claim as new and desire
to secure by Letters Patent is:
1. A freely adjustable supporting assembly comprising
a. a spherical element
b. a pair of substantially flat and contacting plates adapted to
receive said spherical element therebetween;
c. said plates being held together and attached to a support;
d. one of said substantially flat plates having a round recess to
receive a portion of said spherical element;
e. the other of said plates having a round aperture of larger
diameter than that of the aforementioned round recess and a smaller
diameter than that of said spherical element;
f. a portion of said spherical element being adapted to extend
through said round aperture;
g. a screw-threaded shank connected to the last-mentioned portion
of said spherical element;
h. a nut screw-threadedly engaging said shank;
i. a brace secured to said screw-threaded shank by said nut;
and
j. a work-supporting member carried by said brace.
2. The combination of claim 1 wherein the work-supporting member
comprises a pair of internesting rings.
3. The combination of claim 1 wherein the brace comprises a series
of upwardly-extending evenly spaced strip-like members.
4. The combination of claim 1 wherein the brace comprises a series
of evenly spaced upwardly-extending strip-like members and said
work-supporting member comprises a pair of internesting rings, the
inner of said internesting rings being connected to the upper ends
of said evenly spaced upwardly-extending strip-like members.
Description
The present invention relates to adjustable mountings for various
purposes, such as to support work-objects in the manner of a stand
or easel, as in the case of a quilting frame, for example.
It is among the objects of the invention to provide an adjustable
mounting of the type described which is of improved construction
and provides numerous advantages over the devices of the known
prior art.
Another object is the provision of an adjustable mounting which may
be freely manipulated to present the work-piece to the worker at
various angles of accessibility, including both front and rear of
the work-object.
Another object is to provide an adjustable mounting for work-pieces
and the like which is highly efficient for its intended purpose,
durable in service, and simple and inexpensive to manufacture.
The foregoing and other objects and advantages of the invention
will become more readily understood from the following description
and annexed drawings, wherein like reference characters designate
like parts.
In said drawings:
FIG. 1 is an elevational view of the device of the invention in a
position in which it is ready for use, and shown as comprising a
vertical standard on which it is mounted.
FIG. 2 is an exploded view illustrating the various parts in the
order of their superposition, the same fragmentarily illustrating
the lower ends of the elements of the supporting brace.
FIG. 3 is a fragmentary plan view which illustrates the upper end
of one of the supporting braces and the inner and outer elements of
the work-supporting frame.
Referring more particularly to the drawings, the numeral 2
designates a sphere or ball of suitable material, such as simple,
or plain carbon, steel, which is adapted for disposal between a
pair of relatively flat and contacting plates 3 and 4 which may, if
desired, be formed of the same material.
As will be observed, one of the relatively flat plates 3 is
provided with a recess 5 which is of such size and shape as will
receive a portion of the sphere or ball 2 and serve as a retainer
therefor. This recess 5 may be provided by a round concavity or
dimple, or an aperture which is of considerably lesser diameter
than the diameter of the sphere 2.
The other relatively flat, and contacting plate 4, is provided with
a relatively large round aperture 7 which is of a diameter that
approaches that of, but is slightly less than, the diameter of the
sphere, whereby a substantial portion of the sphere protrudes
therefrom; and to this portion of the sphere 2 there is attached a
screw-threaded shank 9.
According to the foregoing construction and arrangement, the axis
of the screw-threaded shank 9 may assume a wide variety of angles
with respect to the axis of the relatively large round aperture 7
in the relatively flat plate 4.
The screw-threaded shank 9 carries a nut 10 in order that the stud
and nut may securely hold one end of a brace which is attached to
the work-object or work-piece.
In the illustrative embodiment of the invention the brace is shown
as comprising three curvilinear and upwardly extending strips 11 of
steel or other suitable material which are arranged in equally
spaced relationship, i.e. 120.degree. apart.
Each of the three braces 11 is provided at its lower and upper ends
with a short flat angular lip or extension, as shown at 12 and 13
respectively; and each of the lower lips or extensions 12 is
provided with a round aperture 14 for receiving the screw-threaded
shank 9.
The upper lips or short flat angular extensions 13 on the braces 11
are shown as attached by screws 15 extending through the holes 14
to the interior surface of a ring 18 which forms part of a
work-holder or work-support.
This work-holder comprising the ring 18 may include an outer
encompassing ring 20 in the manner of a frame for receiving and
holding various materials for various operations to be performed
thereon, for example a quilting frame.
The outer encompassing ring 20 of the circular frames 18-20 is
divided, and provided with an adjustable closure, whereby the outer
ring may be adjusted to conform to the thickness of the flexible
material which is drawn over the inner frame 18.
This adjusting means may comprise a lever 22 which is pivotally
connected to the outer ring 20 adjacent the line of division and
extends over the other side of the division line to engage an
outwardly extending pin 23 which is secured to the ring 20 on the
other side of the division line. The under edge of the pivotally
mounted lever is provided with a series of slots 24 within which
the pin 23 may be received; and the manipulation of the pivoted
lever 22 is enhanced by providing it with an outwardly extending
knob or peg 25.
It will be understood that various other kinds of work-support may
be substituted for the inner and outer circular rings 18-20, and
that various other braces may be substituted for the three equally
spaced curvilinear strips 11.
Each of the generally flat and contacting plates 3 and 4 is
provided with a series of apertures 27 which are in alignment with
each other; and screws 29 which are disposed to extend therethrough
attach the generally flat plates to a support 30, as well as clamp
the said plates together with adequate force to prevent the
undesirable slipping of the spherical element 2 with respect
thereto.
The support 30 is shown as comprising a vertically disposed pole 34
which is mounted on a base plate 35.
As hereinbefore mentioned the mounting provided by the generally
flat parallel plates 3 and 4 and the intermediately disposed
spherical element 2 with its screw-threaded shank 9 etc. is
sufficiently firm for its intended purpose, while at the same time
easily adjustable over a wide area for ready access to both front
and rear of the work-piece.
* * * * *