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Патент USA US2116877

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May 10, 1938.
Filed June 1e, 1957
Patented May 10, 1938
Benjamin F. Brown, Chicago, Ill.
Application June 16, 1937, Serial No. 148,423
2 Claims.
i The
relates , to
squeegees and in particular is directed to a squee
gee adapted to be used intheso-called silk screen
process for forcing the paint or other printing
medium through the stencil.
The object of the invention is to provide a
squeegee in which the holder for the ñexible blade
is unbreakablalight in weight, does not warp or
twist and always maintains the flexible-blade in a
10 position to present a true straight edge'.
Another object of the invention is to mount
the iiexible blade of the squeegee in a holder com
posed of separable parallel bars which‘are loose
ly applied to the iiexible blade and clamped there
15 on by a separable handle or a plurality of handles.
When the handle or handles are removed, the
(C1. 15-245)
bars 2’ and 3 respectively, and one or‘ more han
dles 4.
These clamp bars k2 and 3 are preferably made
of sheet metal to make the device light in weight
and are provid-ed with a cross sectional shape of 5
such a form to `prevent at all times any twisting
or bending of the clamp bars.
Each clamp bar is made of a relatively narrow
sheet metal strip which` 'is ‘bent back and forth
along spaced parallel lines extending lengthwise 10
of the strip to provide a‘ number of portions 5, 6
and l, each two adjacent portions being prefer
ably positioned at a right angle to eachother.
One' marginal portion 8 of the strip is bent more
sharply to form an abutment for one edge of 15
parallel clamp bars are readily detachable from
the flexible blade I. This marginal portion ter
minates-in an outwardly and upwardly extending
marginal flange'g'.
It is also an object of -the invention to provide
.20 a squeegee which can be' made of any desired
length and may be provided with one or more
handles adapted to be slidably adjusted length
wise of the clamp bars applied to the llexible
blade and clamped securely into the selected posi
25 tion or positions respectively.
Still another object of the invention is to pro
' ‘
Both clampbars 2 and~3are made exactly alike
and when applied to the flexible blade I, as shown
in the' Figs. l and 2, form together a channel for
receiving one marginal portion of the blade I and
engaging the same at opposite sides along at least
two spaced parallel lines which are spaced from
the point where the edge of the blade I engages
and abuts the portion 8 of the clamping bars 2
vide the squeegee with one or more detachable
and 3, respective-ly.
handles of such a construction that when the
handles are mounted in position, they become ef
The handle or handles 4 are not only used for
facilitating the manipulation of the squeegee, as
for forcing a printing medium through a stencil 30
30 fective to grippingly engage the separable bars
which loosely engage the flexible blade to clamp
the latter in position between said bars.
The invention has as another of its objects to
make the handles and clamping bars of relatively
35 thin sheet metal and to form these parts in such
in a silk screen process, but also serves the pur
pose of clamping the two parallel clamp bars 2
and 3 to the flexible blade I.
Each handle 4 is preferably made of a wide
sheet metal strip bent transversely into the shape 35
manner that the same may be manufactured
easily and at a very low cost.
simulating an inverted capital letter U. The free
ends of the legs I3 of the U-shaped handle 4 are
With these and other objects in view, the in
provided with an inwardly projecting ñange 9
vention consists of certain novel features of con
40 struction, combination and arrangement of parts,
as will be more fully described and pointed out in
the claims.
In the accompanying drawing:
1 is a perspective view of a squeegee con
45 struction embodying my invention,
Fig. 2 is a cross-section of the same, taken
through one of the handles and the lscrew-type
clamping means,
Fig. 3 is a perspective view of the detachable
and adjustable handle of my squeegee, and
Fig. 4 is a perspective view of a portion of the
novel clamp bar employed in my invention.
The squeegee of the present invention com
prises the following principal parts: The ñexible
55 blade I, preferably made of rubber, two clamp
adapted to enter into and engage the bottom of
the groove formed between the two portions 6 4o
and 'I of the clamping bars 2 and 3 respectively.
The ilanges 9 are somewhat higher as the groove
is deep. Any desired means may be provided for
urging the legs I3 of the handle 4 into clamping
engagement with the parallel clamp bars 2 and 3. 45
In the illustrated embodiment of the handle 4,
the legs I3 are traversed by a pair of screw-type
clamping means, each comprising a flat headed
screw II engaging a companion sleeve nut I2
provided with a flat head I4 of the same size 5o
as head I5 of the screw II.
These clamping means II, I2 are preferably
arranged outside the range of the clamping bars
2, 3 and are inserted in the holes I6 provided ln
the legs I3 of the handle 4. Owing to this con- 55
struction of the handle 4 and the arrangement of
the clamping means I I, I2, the handle may be
secured at any desired position along the channel
formed by the two clamp bars 2 and 3, without
provided with four handles spaced from each
other a suitable distance to permit two operators
to seize the squeegee and operate it simultane
Although the invention has been disclosed and
' removing the clamping screws from the handle.
The squeegee is assembled by first applying the
described with reference to a particular embodi
two clamp bars 2 and 3 loosely to one edge of the
ment, it is of course obvious that various modi-~
ñexible blade I and then sliding the handles 4
ñcations may be made without departing from
endwise upon the clamp bars, the ilanges 9 of
the spirit and scope of the present invention.
What I claim is:
l. In a device of the character described, a pair
between the portions 6 and 'I of each bar 2 and
3 respectively. The screw-type clamping means of separate parallel clamp bars, a flexible blade
I I, I2 mounted previously on the handle 4 have to arranged between said clamp bars, each clamp
be sufñciently loose to permit this application ofr bar Consisting of a sheet metal strip bent back
and forth parallel to its longitudinal axis so as
the handle. After the handle or handles 4 have
been slidably moved into the desired position, the to produce an abutment for one edge of said
blade, to produce ribs engaging the sides of said
clamping means are tightened so that the free
ends 9 of the legs I3 are urged toward each other ’ flexible blade-along spaced parallel lines and to
and into clamping engagement with the clamp form a .groove on the outside of said bars, and
20 bars 2 and 3. The latter are urged hereby at
a handle having means engaging said groove of
the'same time in clamping engagement with the both Aclamp bars, said handle being adapted to
hold said _clamp bars in clamping engagement;
ñeXible blade I.
’ It will be noted that for the purpose of clean
with said flexible blade.
ing: the ñexible blade I, it may be completely
2; In a device ói the character described, a
25 detached from its metallic holder consisting of
pair of separate parallel clamp bars, each bar
having a longitudinal groove on its outer side and
the clamp bars 2, 3 and the handle or handles 4.
A flexible blade worn down to the point where it one of its longitudinal margins being bent an
is no longer useful can be substituted quickly by gularly to form a shoulder, a ñexible blade ar
10 the handles entering the opposed grooves formed
a new blade which, if desired, may have a differ
ent thickness and width, and may also be of a
-diiïerent material. It is believed obvious that
the metallic holder is practically indestructible
and of unlimited life.
'I‘hev squeegee of the present invention may be
35 made of any desired size and length and depend
ing upon its length, one, two or more handles 4
may be' used for operating the squeegee and
clamping the flexible blade between the clamp
bars. A very long squeegee, for instance, may be
ranged between said clamp bars and engaging
the shoulder formed thereon, a one-piece han
dle >provided with means for frictionally engaging
said groove in both clamp bars and adapted to
be slidably adjustable lengthwise of the same,
and'means onsaid handle adapted to cause said
frictionally engaging means to clampingly en 35
gage -said clamp bars solely along the bottom of
said groove, whereby the bars clampingly engage
said flexible blade.
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