close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2114329

код для вставки
April 19, 1938.
p. M. BLACKBURN
> .
2,114,329
FASTENING DEVICE FOR SCREEN PLATES
Filed Marbh a, 1936
s Sheets-Sheet 1
April 19, 1938..
D. M. BLACKBURN
‘ 2,114,329
FASTENING DEVICE FOR SCREEN PLATES
Filed March 3, 1936
5 Sheets-Sheet 2
26'
WWII)” ' "WWW!
(19
7%411 \\
1mm I
53
1/5 11 29
'
_
INVENTOR
?ame! M. B/ad’éarn/
BY
i 7 @TORNEtK
.
April 19, 1938-’ >
D. M. BLACKBURN_
2,114,329 ‘
FASTENING DEVICE FOR SCREEN PLATES
Filed March 3, 1936
I IUW
K
a4
’
3 Sheets-Sheet 3
m N N m m m m
.
54
-‘
if,
15 \ J
/
I
1?
M
_ 14
15
-1g
z
15
:_
‘1 '
29
.
1/0
5‘
I
_
'
‘
‘
'INVENTOR
Jami/Y1KBlur/{61010
_
?-vlélé?z‘é
/4.,' _ ATTORNEY
Patented Apr. 19, 1938
2,114,329 '
UNITED STATES PATENT OFFICE
2,114,329
FASTENING DEVICE FOR SCREEN PLATES
Daniel M. Blackburn, Carbondale, Pa., assignor
to Hendrick Manufacturing Company, Carbon
dale, Pa., a corporation of Pennsylvania
Application March 3, 1936, Serial No. 66,809
10 Claims. (Cl. 209-—399)
This invention relates to shaking and vibrating
Fig. 1 is a plan View, partly fragmentary and
screens, and more particularly relates to a device partly in section, of a screen frame, screen plates
for fastening the screen plates in place on the thereon, and fastening devices embodying my in
screen frames.
vention associated therewith;
Heretofore it has been customary to bolt the
5
Fig. 2 is a perspective of a portion of the as
GI.
screen plates to the frames. This method re
sembly, as viewed from below;
I I
quires considerable time, and when there is more
‘than one deck the operation is particularly
tedious, diiiicult and slow, since it requires a per
son to crawl between the decks, which usually
have only a very narrow space, about twelve
inches deep, between them.
Thus when plates
are applied or changed, not only is considerable
labor and time required, but there is also con
15 siderable loss of operating time of the screen and
stoppage of production.
A principal object of my invention is to pro
vide a device whereby the screen plates may be
fastened to and unfastened from the screen
20 frames ofv either single-deck or multiple-deck
screens quickly, conveniently, and expeditiously,
conserving time and labor and increasing the op
erating time and production of the machine, and
whereby the screen plates are fastened and held
25 in place ?rmly, positively, and effectively; and
another object of this invention is to provide a
device of the character described which is simple,
durable, sturdy, and inexpensive in construction,
convenient to apply, and suitable for heavy screen
30 plates as well as for light plates; and to provide
a fastening device of the character described
which may be manipulated by a person outside
of the screen and which does not require a per
son to crawl between the decks of a multiple-deck
35 screen.
Other objects of this invention will be in part
obvious and in part pointed out hereinafter.
In accordance with this invention the fastening
device includes a resilient rod or bar engageable
40 at one end with the screen plate from below and
then to be ?exed over a saddle or fulcrum and to
have its other end engaged in a keeper therefor
so that the bar will be maintained under re
silient flexure which presses and holds the screen
45 plate ?rmly and tightly down on the screen
frame; the rod being preferably applicable and
Fig. 3 is a sectional view, and is taken on the
line 3—3 of Fig. 1;
Fig. 4 is another sectional view, and is taken on
the line 4—4 of Fig. 1;
Fig. 5 is another sectional view, showing a pos
sible modi?cation, and is taken on the line 5—-5
of Fig. 6;
Fig. 6 is a plan view, partly fragmentary, of a
modi?cation, as viewed from underneath;
Fig. 7 is a sectional view of a portion of the
modi?ed assembly, and is taken on the line '|--—'!
of Fig. 5;
Fig. 8 is a view similar to Fig. 2, showing the
fastening of a heavy screen plate; and
Fig. 9 is a sectional view, and is taken on the
line 9-9 of Fig. 8.
Similar reference characters refer to similar
parts throughout the several views of the draw
ings.
Referring to the drawings, the flexible fasten
10”
20"
255'
ing bar or rod l9 has one end H curved, and in
one form this curved end is forked, providing two
branches-or arms I2 and I3, each ending in a
hook I 4, 15 for connecting the rod to one or two
screen plates; ,and in another form (Figs. 5 and
6) this end H not branching and ends in a
single hook it. for connecting the rod to a screen
plate.
When the screen plates, such as IT, to be fas~
tened by means of my device are of comparatively
light metal, wire mesh or other material that is
not sturdy to a high degree, I preferably mount
each plate on a reenforcing and stiffening frame,
which may comprise side angles 18 and I9, end
angles 20 and 2|, and cross angles 22, welded to
or otherwise a?ixed to the under surface of the
plate H. The side angles 18 and I9 rest on the
spreader angles 23 which extend between and are
securely attached to the side rails 24 and 25 of the
screen frame.
‘
detachable by a person standing outside of the
screen frame. Means may also be provided for
placing and locking the device under additional
50 tension.
In order that a clearer understanding of my
invention may be had, attention is hereby direct
of the parts of the reenforcing and stiffening
frame, such as the side members [8 and I9, and 50
ed to the accompanying drawings, forming a part
of this application, and illustrating certain possi
55 ble embodiments of the invention, and in which:
fastening rod H] can be engaged in the eye and
thus the rod engaged with the screen plate 17.
Eyes, comprising angle irons having one arm
26, welded or otherwise secured to one or more
having an eye 21 in the other arm 28, are pro
vided so that a hook, such as M, I5, or it, of a
Intermediate its ends the fastening rod bears
55.
2
2,114,329
upwardly against the apex of a V-shaped saddle
or chair 29, welded or otherwise secured to a
spreader angle 23 of the screen frame, and the
outer end 30 of rod 10 is anchored in notch 3|,
open at the side, of a keeper piece 32 secured to
an end of the spreader angle 23. Rod I0 is re
quired to be ?exed over saddle 29 to have its
end 30 engaged in keeper 32 so that the rod pulls
the screen plate I‘! down on the screen frame with
10 strong constant resilient force and thus main
tains the plate fastened in place on the frame.
Preferably the end 30 of rod I0 is threaded and
protrudes through the keeper 32 so that by screw
ing up a nut 33 on the rod end 30 against the
15 keeper 32 the rod may be placed and maintained
under increased tension, increasing the force with
which the screen plate is pulled and held down
against the screen frame.
The reenforcing and stiffening frames are not
20 necessary for screen plates made of heavy stock,
and with these the eyes 34 for the hook ends of
the. rods I0 may be welded or otherwise secured
directly to the under side of the heavy plates 35.
With either light or heavy stock plates, eyes,
25 such as 36, may be secured to the plates in a cen
tral or other intermediate location, and for such
location of the eyes, one or more suitable notched
keeper members 31 having keeper notches 38 may
be secured to the side rails 25 of the screen frame
30 intermediate the spreader angles 23, and an ex
tended saddle or chair plate 39 provided, extend
ing between and having end ?anges 40 secured to
two spreader angles, whereby the saddle bar 39 is
supported.
It is understood that the eyes, saddles and keep
ers for the fastening rods may be provided in any
number and in any locations desired, and the
number and locations may be chosen for the most
convenient access and manipulation of the rods
40 to attach and to change the plates.
35
To fasten a plate to the screen frame it is only
necessary for a person to engage the hook end or
45
ends of the rod with the eye member or members,
place the rod against the saddle member and then
?ex the rod and engage its outer end in the notch
vof the keeper member, and if desired, place. the
rod under greater tension by screwing up the nut
on the end of the rod. All this can be done con
veniently by a person outside of the screen and the
50 person is not required to crawl between a pair of
decks to engage or to disengage the rod. The
fastening and unfastening of the rods may be done
very quickly, simply, and conveniently, resulting
in the saving of much time and labor and con
55 serving the operating time of the machine and
increasing production.
As shown, the rods hav
ing the two hooks may engage two adjacent screen
plates. Other advantages and improvements will
be apparent to those familiar with vibrating and
60 shaking screens and with the application and
changing of the plates thereof.
As many changes could be made in the above
construction, and as many apparently widely dif
ferent embodiments of this invention could be
65 made without departing from the scope thereof,
it is understood that all matter contained in the
above description or shown in the accompanying
drawings be interpreted as illustrative and not in
a limiting sense.
70
The term “screen plate” as used in the claims
is to be understood as including not only per
forated or slotted plates, but also screen surfaces
formed of wire mesh or other relatively light or
?exible material of any of the types commonly
used in shaking and vibrating screens.
What I claim is:
1. The combination with a supporting frame
and a screen plate on the frame, of a device for
fastening the plate in place on said frame, said
device including a resilient, elongated fastening
member, means for attaching the fastening mem
ber to the screen plate and to the frame at points
spaced along the length of the. fastening member,
and means engaging said member intermediate
said spaced points when said member is attached 10
to the plate and frame, to place and maintain the
fastening member under resilient ?exure, whereby
the plate is urged against the supporting frame.
2. The combination with a supporting frame
and a screen plate on the frame, of a resilient
fastening rod for the plate, attaching means on
the plate and frame adapted to receive the ends
of the fastening rod, and means for ?exing said
rod away from said plate intermediate its ends,
whereby the rod is placed and held under ?exure 20
and the plate is urged against the frame by the
resilient pull of the rod.
3. The combination with a supporting frame
and a screen plate on the frame, of a saddle mem
ber secured to the frame beneath its plate-receiv 25
ing surface, and a resilient fastening rod for the
plate having a curved end adapted to be connected
to the screen plate from below and its other end
adapted to be connected with the frame and to be
?exed about the saddle member, whereby the rod
is placed and held under ?exure and the plate
is held in place on the frame by the resilient pull
of the rod.
4. The combination with a supporting frame
and a screen plate on the frame, of a device for
35,
fastening the plate in place on the frame and in
cluding, a resilient fastening rod, means for at
taching one end of the rod to the screen plate
from below, means for attaching the other end
of the rod to the supporting frame, and means
engaging the rod intermediate its ends for plac
ing and holding the rod under ?exure away from
the plate when attached to the plate and frame,
whereby the plate is urged against the frame by
the resilient pull of the rod.
4.5 ,
5. The combination with a supporting frame
and a screen plate on the frame, of a device for
fastening the plate in place on the frame and
including, a resilient fastening rod, means for
attaching one end of the rod to the screen plate 50.
from below, means for attaching the other end
of the rod to the supporting frame, means en
gaging the rod intermediate its ends for placing
and holding the rod under ?exure away from the
plate when attached to the plate and frame,
whereby the plate is urged against the frame by
the resilient pull of the rod, and means engag
ing said rod for drawing the rod longitudinally
when so connected and ?exed, to place and hold
the rod under increased tension and the plate
held down more tightly on the frame.
6. The combination with a supporting frame
and a screen plate on the frame, of a resilient
fastening rod for the plate having a curved end
terminating in a connecting hook, an eye mem 65
ber secured to the under side of the screen plate
and adapted to receive said hook, a keeper mem
ber having a notch adapted to receive the other
end of the fastening rod and secured to the frame, 70
and a saddle abutting upwardly against the
frame, the hook end of said rod being engage
able with said eye member and the rod adapted
to be ?exed about said saddle and its other end
engaged in the notch of the keeper member,
2,114,329
3
whereby the rod is placed and held under ?exure
and the plate held down on the frame.
ly against and secured to a spreader angle of the
7. The combination with a supporting frame
9. The combination with a supporting frame
and a screen plate on the frame, of a resilient
and a screen plate on the frame, of a resilient
fastening rod for the plate and having a curved
end terminating in a connecting hook, an eye
member secured to the under side of the screen
plate and adapted to receive said hook, a keeper
member having a notch adapted to receive the
10 other end of the fastening rod and secured to
the frame, and a saddle abutting upwardly
against the frame, the hook end of said rod be
ing engageable with said eye member and the rod
adapted to be flexed about said saddle and its
15 other end engaged in the notch of the keeper
member, whereby the rod is placed and held un
der flexure and the plate held down on the frame,
said other end of the rod projecting through said
keeper member and being threaded, and a nut
20 on said threaded portion bearing against the
keeper member, whereby the rod may be drawn
longitudinally and the tension of the rod in
creased.
8. The combination with a supporting frame
and a screen plate on the frame, of a resilient
fastening rod for the plate and having a curved
end terminating in a connecting hook, an eye
member secured to the under side of the screen
plate and adapted to receive said hook, a keeper
30 member having a notch adapted to receive the
other end of the fastening rod and secured to
the frame, and a saddle abutting upwardly
against the frame, the hook end of said rod be
ing engageable with said eye member and the
rod adapted to be flexed about said saddle and
its other end engaged in the notch of the keeper
member, whereby the rod is placed and held un
der ?exure and the plate held down on the frame,
said saddle comprising a V-shaped member hav
40 ing the upper ends of the arms abutting upward
supporting frame.
fastening rod for the plate and having a curved
end terminating in a connecting hook, an eye
member secured to the under side of the screen
plate and adapted to receive said hook, a keeper
member having a notch adapted to receive the
other end of the fastening rod and secured to
the frame, and a saddle abutting upwardly
against the frame, the hook end of said rod be
ing engageable with said eye member and the
rod adapted to be ?exed about said saddle and
its other end engaged in the notch of the keeper
member, whereby the rod is placed and held un
der ?exure and the plate held down on the frame,
said saddle comprising a single-Web bar extend
ing longitudinally between and having its oppo
site ends secured to a pair of spaced spreader
angles of the supporting frame.
10. The combination with a supporting frame
having a spreader angle and two screen plates
on the frame, the plates having adjacent edges
meeting along said spreader angle, of a fastening
device for said plates and including a resilient
10
15
20
25
rod having one end curved and having two arms
spreading to opposite sides of said spreader an
gle, a keeper for the opposite end of the rod and
secured to the frame, a saddle secured to the 30
spreader angle intermediate the ends of the rod,
and an eye secured to the under surface of each
plate and each adapted to be engaged by the
hook on the adjacent rod arm, the said hooks be
ing engaged with said eyes and the rod flexed 35
about said saddle and the end of the rod en
gaged in said keeper, whereby said rod is placed
and held under ?exure and both said plates are
held down on the supporting frame.
DANIEL M. BLACKBURN.
40
Документ
Категория
Без категории
Просмотров
0
Размер файла
643 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа