April 7, 1964
I 'r. E. DRISCOLL ETAL
3,127,695
CANVAS STRETCHING FRAME
Filed April 9, 1963
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United States Patent ()?lice
3,127,695
Patented Apr. 7, 1964
1
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3,127,695’
the frame in the manner shown in FIGURE 1. It will
be noted that the tapered edges of the canvas sheet extend
CANVAS STEETCHENG FRAME
Timothy E. Drisc'oil and Helen Dr tacit,
7M E. B St., Hntchinson, Kane.
of
slightly beyond the serrations 32 of the gripper strip 30.
Thus, as the strips are folded upwardly and inwardly into
the sockets 16 of the sides 12, the serrations 32 engage
Filed Apr. 9, 1963, der. No. 271,621
with the overlapping portion of the canvas to grip it and
3 Eiaizns. (El. 45-441}
secure it within the sockets 1-6 without slipping. Thus,
This invention relates to frame construction and, more
by moving the folded canvas and gripper strips 3-9 from
particularly, to a canvas stretching frame for mounting
the position shown on the left side of FIGURE 2 to the
artists’ canvases.
10 fully assembled position shown on the right side of FIG
It is an object of the present invention to provide a
URE 2, the canvas is evenly stretched over the frame and
compact frame assembly over which an artist’s canvas
uniformly securely held in place. A part of the canvas is
compressed and clamped between the abutment surface
may be stretched and mounted in a simple and convenient
26 of the longitudinal ribs 13 and the adjacent edges of
manner.
Another object of the present invention is to provide 15 the gripper strip 3%, as is clearly shown in FIGURE 2.
canvas frame construction including a rectangular frame
It will thus be recognized that through proper dimen
manufactured from extruded aluminum, which can be
sioning of the parts, and proper sizing of the canvas sheet,
economically fabricated and effectively used for stretch
the canvas sheet can be quickly and easily applied to the
ing and mounting artists’ canvases thereupon.
rectangular frame with simple manual pressure readily
All of the foregoing and still further objects and ad
exerted without undue strain, special tools, or skill.
vantages of this invention will become apparent from a
While this invention has been described with particular
study of the following speci?cation, taken in connection
reference to the construction shown in the drawing, it is
with the accompanying drawing, wherein:
FIGURE 1 is a fragmentary perspective view, partly
in section, and partly broken away, of a canvas stretch
ing frame assembly made in accordance with the present
invention;
to be understood that such is not to be construed as im
parting limitations upon the invention, which is best de
25 ?ned by the claims appended hereto.
Having thus described our invention, we claim as new
and desire to secure by Letters Patent:
1. A canvas stretching frame comprising, in combina
tion, a rectangular frame having perpendicularly related
invention, illustrating the manner in which the parts are 30 sides de?ning smooth frontal edge, each of said sides
having a smooth outer surface, the rear edge of each said
assembled; and
FIGURE 2 is an enlarged fragmentary cross sectional
perspective view of various components of the present
FIGURE 3 is a rear perspective view of the assembly
shown in FiGURE 1, illustrating the manner in which the
side defining a rearwardly facing convex surface and a
forwardly and inwardly opening socket of generally
frame assembly is assembled.
U-shaped cross sectional con?guration, a sheet of canvas
Referring now to the drawing, a canvas stretching frame 35 having four tapered sides and a central rectangular area
asembly 18 made in accordance with the present inven
overlying said frontal edge of said frame, a gripper strip
tion is shown to include a rectangular frame having four
secured to the rearwardly facing side of each of said
perpendicularly related sides 12 which are preferably con~
tapered sides, each said gripper strip being foldable rear
stucted from extruded aluminum for maximum strength,
wardly with said respective tapered sides of said sheet of
economy, and uniformity. The rear edge of each side 40
canvas about said outer surface and convex surface of
member includes a reen'trant portion 14 de?ning a socket
each side of said frame, the outermost edges of said
16 for purposes hereinafter more fully described.
gripper strips being received within said sockets of said
On the inside surface of each side member 12, is a
frame guides, the inside surface of each said frame side
longitudinally extending rib 18 which forms an abutment
20 that serves as a keeper for retaining the end of a canvas 45 de?ning a longitudinal rib, and the innermost edges of
said strips compressing an intermediate portion of said
sheet in assembly with the frame, as will be also herein
after more fully described. The frontal edge 22 of each
side member 12 is of generally arcuate cross sectional
con?guration, so as to provide a smooth surface over
which a rectangular canvas sheet 26 may be stretched.
tapered sides of said canvas sheet against said ribs.
2. A canvas stretching frame as set forth in claim 1,
wherein said outermost edge of each said gripper strip
50 includes a plurality of serrations.
The canvas sheet 26 has four outwardly tapered sides
3. A canvas stretching frame as set forth in claim 2,
28. A gripper strip 30 having a plurality of serrations 32
wherein said frontal edge of said frame is of generally
along one outer edge, is secured to the rearwardly facing
arcuate cross sectional con?guration.
side of each tapered side 28 of the canvas sheet 26, such
as by glue, adhesive, or the like.
References Cited in the ?le of this patent
The size of the canvas sheet 26 and the tapered sides
UNITED STATES PATENTS
28 are in proportion to the size of the rectangular frame
1,562,105
McDonald ___________ __ Nov. 17, 1925
over which it is to be stretched. The tapered sides 28
1,848,498
Shrauger ____________ __ Mar. 8, 1932
eliminates material at the corners, which would otherwise
cause bulging, creasing, and the like.
Freeman ____________ __ Mar. 25, 1941
60 2,235,874
In assembling the canvas sheet to the rectangular
2,586,031
Hahne ______________ __ Feb. 19, 1952
frame, the sheet is placed upon the frontal edge 24 of
2,978,022
Winnan ______________ __ Apr. 4, 1961