~United States` Patent 1191

~United States’ Patent 1191
Assignee: The Red Cross Manufacturing Corp.
Feb. 13, 1973
Primary Examiner—‘Willie G. Abercrombie
Attorney-Robert C. Brown, Jr_ et al.
Robert D. Lautzenheiser, Bluffton,
A loading chute for shredders of the type used to
shred lawn materials. A loading hopper is arranged
Apr!‘ 7, 1972
App]. No.: 242,043
us. c1 .......................... ..56/501, 241/186 R
with the inlet opening of the shredder for movement
between an upright position and a lower position
wherein material to be Shredded can be swept up the
chute and into the shredder. A damper is arranged
[51 1
1111. C1. ......................... ..B26d 4/28, B020 18/00
“"th the chute *0 act as a guard
Field of Search .... ..l46/l24, 192, 107; 24l/l86;
56/501, DIG. 8, l2.8
References Cited
Johnson ........... .; ................ ..l46/l92
7 Claims’ 6 Drawing Figures
_ SHEET 2 OF 4
The present invention is directed to shredding
machines ofthe type used to shred leaves, prunings and
lower height at the rear. The upper edges of the side
walls 16 and 17 may be rolled as at 19.and 20.
the like, and is particularly directed to loading facilities
for shredders. The major purposes of the present inven
wardly therefrom.
These rolled portions carry spaced handles 21 and 22
which are ?xed therein as by bolts and extend out
The forward end of the loading hopper 15 is con
nected to a hinge plate assembly, which consists of
spaced plates 23 and 24 which are spanned by a rod 25.
The hinge plate assembly is fixed to the forward end of
the loading hopper as by means of bolts and nuts 26
and 27. Plates 23 and 24 ?t within the U shape de?ned
at the forward end of the loading hopper.
tion are to create loading facilities which may be selec
tively utilized as a feed hopper over an-inlet opening to
a shredder or as an inclined feed ramp leading from the
ground into the inlet opening of the shredder, to pro
vide simple and positive means to couple such a ramp
to a shredder, to provide simple means for deterring ac
cidental placement of a person’s hand or foot within
the inlet opening of the shredder, to provide a guard to
The side plates 23 and 24 of the hinge plate assembly
are adapted to embrace the sides of an inlet housing 28.
Inlet housing 28 is formed with a curvilinear upper wall
29 and side walls 30 and 31. The rear and bottom of the
housing are open so as to ‘receive material from the
restrict “blowback” of material toward the user, to ar
range such a hopper that an operator can easily utilize
the end of the chute remote from the shredder for lift
ing the shredder for transport in wheelbarrow fashion
hopper and direct it to the inlet opening 14a.
from place to place, and to enable simple and economi
The hinge plate assembly and the hopper ?xed
cal manufacture of such hoppers.
thereto are pivotally connected to the inlet housing 28
These and other purposes will become more ap
as by means of pivot bolts 32. A nut 33 with an en
parent in the course of the ensuing speci?cation and
larged handle thereon is threadedly engaged with one
claims, when taken with the accompanying drawings, in
end of the rod 25 and, upon tightening of the same, will
25 cause contracting of the plates 23 and 24 against the
FIG. 1 is a perspective view of the invention;
side walls 30 ‘and 31 and frictionally lock the load
FIG. 2 is a rear perspective view of a ‘portion of the
hopper and hinge assembly in a selected position of
shredder assembly illustrated in FIG. 1;
pivotal adjustment relative to the inlet housing 28.
FIG. 3 is another perspective view of the shredder il- '
Inlet housing 28 is fixed over the inlet 14a to the
lustrated in FIG. 1 while illustrating a different opera 30
‘shredder. A channel 28a is ?xed to the front wall and
tive position;
embraces a ?ange 28b of the shredder top wall at the
FIG. 4 is an exploded view of loading chute facilities
forward side of the inlet opening. The rear of the hous
utilized with the shredder of FlGS. 1—-3;
ing is bolted as at 280 to the inclined feed plate 28d in
FIG. 5 is another perspective view of the invention
the inlet.
while illustrating a bagging attachment utilized with the 35. A damper assembly generally designated at 34 is
invention; and
de?ned by a ?rst plate 35 carrying a hinge pin 36 which
FIG. 6 is a sectional view of a hopper mounting hous
in turn carries a plurality of plates 37,38 and 39 which
ing coupled to the shredder.
are positioned side by side and adapted for swinging
Like elements are designated by‘ like characters
throughout the specification and drawings.
7 40 movementabout the axis of the hinge pin 36. The com
bined width of the, plates 37, 38 and 39 is slightly less
With ‘speci?c reference now to the drawings,'and in
the span between the side walls 16 and 17 of the
the ?rst instance to FIG. 1, the numeral 10 designates a
hopper and their length is greater than the depth of the
hopper. Plate 35 is swingably mounted on the hinge
a pair of spaced wheels 11 at the forward end of the
compartment. A stand 12 is ?xed to’ the lower rear end 45 plate assembly by means of a cylindrical portion 40 of a
plate 41 vto which plate 35 is ?xed. Portion 40 receives
of the shredding compartment to allow the shredder to
shredding compartment which is ground supported by
the bolt 25 whereby the damper assembly is pivotally
rest at a selected position on the ground. A motor 13 is
supported on the upper wall of the compartment and
mounted on the hinge plate assembly. The plate 41 ex-'
has its drive shaft generally vertically disposed so as to ' tends upwardly with respect to the plate 35 to de?ne a
' drive shredding knives 13a-(FIG. 6) within compart 50 manipulating portion.
' The damper assembly thus de?ned may be swung to
ment 10. An outlet passage 14 is ‘formed at the rear ‘of
a'position (FIGS. 1 and 6) wherein the plates 37, 38
the compartment and-isadjacent to any inlet or feed
passage 14a. Shredders'of this type are described in my
and 39 mask the opening from the hopper to the op
US. Pat/No. 3,593,930. The shredding housing or'
positely facing opening of the inlet housing. In this posi
compartment may be formed as disclosed in my 55 tion the plates 37, 38 and. 39'may swing inwardly in
dividually or as a unit about the axis of the hinge 36 and
toward the shredder inlet to allow movement of materi
copending application, Ser. No. l32,657, ?led Apr. 9,
197 l.
als into the inlet housing. Unless positively swung by
In accordance with the present invention, a loading
hopper generally designated at 15 is associated with the
forcible engagement with materials being fed into the
housing, the plates 37, 38 and 39 will rest upon the bot
tom wall l8'to thus mask and guard the inlet opening of
the housing 28 from the user. In this position, the plates
also impede “blowback" of material toward the user.
‘inlet 140 so as to feed materials to be shredded, such as
leaves, twigs, and the like, into the shredding compart
ment. The loading hopper I5 is defined by a metal
stamping formed to provide spaced side walls 16 and
17 which are joined by a bottomwall 18. The side walls
and bottom wall diverge outwardly from the shredder
when viewed in plan. Side walls 16 and 17 have a major‘
height at the forward end of ‘the hopper and taper to a
The damper assembly may also be swung upwardly
to an upper position as is illustrated in FIGS. 2 and 3. In
this position plate 41 abuts against housing 28 and
disposes both the plate 35 and plates 37, 38 and 39 'at
an upwardly and forwardly disposed angle relative to
the loading chute. ln this upper position, the plates ex
formed in an upper wall thereof and an outlet opening
tend partially across the inlet opening to housing 28 to
means positioned over said inlet and having a rear
formed through a side wall thereof, flow directing
restrict “blowback."
The. loading hopper assembly and inlet housing are
adapted for use in plural positions of adjustment. The
loading hopper may be swung to an upwardly and rear
wardly inclined position as illustrated in FIG. 1 through
loosening of the lock nut 33 followed by tightening of
this ‘nut in the selected position of adjustment. in this 10
position debris to be shredded may simply be dumped
into the load hopper.
The load hopper may also be utilized as illustrated in
FIG. 3 wherein the rear end of the load hopper rests
upon the ground. Debris may then be swept or raked
into the hopper or up the hopper and through the inlet
housing to the ‘inlet 14a of the shredder.
The hinge plate assembly is also formed so that the
load hopper may be adjusted to an essentially upright
position (not illustrated in the drawings).
The invention also contemplates the use ofa bagging
attachment for the shredder and load hopper facilities.
To this end an annular ring 43 is adapted to be ?xed in
a position surrounding the outlet opening 14 through
wardly facing inlet, a feed hopper pivotally mounted on
said directing means, said hopper being mounted for
movement between a position extending upwardly rela
tive to said compartment and a position downwardly
and laterally inclined from said compartment, said
hopper being de?ned by a U-shaped trough, and means
for selectively holding said hopper in both positions.
2. The structure of claim 1 wherein said hopper is
movable to an upright position over said compartment
inlet opening and to a position extending upwardly and
laterally from said compartment inlet opening.
3. The structure of claim 1 wherein said flow direct
ing means is de?ned by a rearwardly and downwardly
open housing, said holding means including plates car
ried by said hopper and embracing side walls of said
housing, and means for clamping said plates against
20 said side walls.
4. The structure of claim 1 wherein said hopper has
manipulating handles extending outwardly therefrom.
5. The structure of claim 1 wherein said hopper in
cludes a damper pivotally mounted thereon and ex!
means of a bracket 44 which is ?xed to the ring. 25 tending across the flow space through said hopper.
Bracket 44 is adapted to be ?xed to the upper wall of
6. The structure of claim 5 wherein said damper is
the outlet opening through means of a lock nut 45. A
pivotally mounted on a member pivotally mounted on
?exible O-ring 46 or the like may be used to clamp a
said hopper to enable selective positioning of the pivot
bag illustrated in phantom at 47 in FIG. 5 to the ring.
I claim:
axis of said damper relative to said hopper and in posi
l. A shredding machine including a wheel supported
tions fully masking and partially masking the flow space
shredding compartment having shredding knives
through said hopper.
therein and power means for rotating said knives, said
de?ned by a plurality of plates positioned side by side.
7.v he structure of claim 6 wherein said damper lS
shredding compartment having an inlet opening