0a. 16, 1923.
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1,687,728
M. V.
LIDDELL
GU'I'TER BROOM ATTACHMENT FOR S'WEE‘PI’NG MAQHINES
Filed Nov. 19, 1925
3
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6 Sheets-Sheet 1
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““ Moses {/0 Z1263 Lzddell
Oct. 16, ‘1928.
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M. v. LlDDELL
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GUTTER BROOM ATTACHMENT FQR SWEEPING MACHINES
Filed Nov. 19, 1923
- '6 Sheets-Sheet 2
1720612251"?
W/bses (/olnqy Zz'cidell.
Oct. 16, 1.928.
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1,687,728
M. V. LIDDELL
GUTTER BROOM ATTACHMENT FOR SWEEPING MACHINES
Filed um}. 19, 1925
6 Sheets-Sheet I 5
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GUT'I‘ER' BROOM ATTACHMENT FOR SWEEPING MACHINES
Filed Nov} 19, 1925,
//////%
6 Sheets-Sheet 6
1,687,?28 i
Patented Got.‘ 16, 1928.
UNITED STATES‘ PATENT emce
MOSES VOLNEY LIDDELL, OF MAT'IV‘ITU'CK, NEW YORK.
oUTTER-Bnoorr ATTACHMENT non swniirine MACHIYINES.
' vliApplicvation filed November 19, 1923. Serial No. 675,440‘.
This invention, relates to means for mount-_ a resilient return connection for‘ the head,
ing upon a sweeping machine, for instance, which normallytends to draw the‘ head in
a power driven pick-up sweeper foristreet’ ward, but with a force less than the outward
and road cleaning, purposes, ‘a broom‘ of the feeding force developed by rotation of‘the
kind usually designated as a gutter-broom, broom, with its limitedse‘gment in,‘ contact 90
comprising a body of splints, or bristles with the surface,jso that whenever the broom
mounted- to rotate ‘upon a vertical or approxi is raised out of contact with the surface; it
matelyvertical axis.
<
p
,
7
‘will be held to the inner limit of its horizon!
‘One object of the invention, is‘to ‘provide tal swinging movemenhand thereby reduce
H)
5
means whereby a gutter broom, while‘being the overall lateral dimension of the machine
rotated about its axis, will "be permitted to during‘ transporter while sweeping areasnot v6,5
feed bodily outward‘ from‘the' vehicle upon
involving the gutter or curb.
which it is mounted in order to maintain a
sweeping path that extends'nentirely to a curb
orother obstruction that renders the ‘surface
inaccessible to the main broom of the sweeper;
“ Still another object is to sustain the load
‘
‘ n
of‘the broom mounting, through the ‘broom,
upon the surface that is ‘being swept, ‘with
the dual effect of insuring ‘proper sweeping
and in realizing this end, according tothe contact by the load ‘sustained, and relieving
preferred embodiment of the invention, the the-head and'radius arms from substantial ’
gutter broom of a sweeper is rotatably sup bearing upon the frame of the vehicle during
ported in a head which is connected with the swinging movements of the broom,‘ to v
the frame of the sweeper‘through means of which end, the ‘means for lowering and rais~
vertically spaced radius arms havingtheir ing the broom to and from ‘operative position
remote ends pivoted ‘to the frame ‘in a ver
is mounted upon the head in which the broom‘
tical axis offset fromthe head inithe longi is rotatably mounted and with which the
tudinal‘direction of the machine, so that the broom swings. One subordinate feature in 80
head, with thegutterbroom, will be free to cident‘ to the preferred ‘means i for realizing‘
' swing laterally of the machine,within limits, this obj ect consists in ?xing the’ rotary ‘broom
the head‘ will be sustained against torsional shaft against vertical movem‘entin the swing '
displacement, and the position of the‘ shaft ing ‘head and having “theelevating means
30 of the broom will be‘ de?nitely 1?red,’prefer
connected with the‘ broom in‘ a manner to
ably at "an angle to the vertical, which limits raise the broom upon’ the shaft as distin- ‘
surface contact‘ of the broom to the forward» guished from sliding the shaft in theliead;
outward segment‘ thereof. A feature of the and another such sub‘oi‘rdinate feature con
construction incidentto‘the preferred means sists in developing thebroom elevating‘ means
for ‘realization of this object ‘consists in in the form of a‘ lever which'is fulcrunied so
means for raising the broom from operative upon the head so as to partake of‘ the swings
position and thrusting it downward to such ing movementsv of the latter, and‘ has its
40
position, which means is mounted upon the manipulating end extending‘ a substantial disi
swinging head so that the load of the elevat tancetoward the ‘pivots of thei‘radius arms
ing means as well as the broom is not only‘ about ‘which the head swinga'so that the lever
removed from the swinging head when the ‘remains within convenient reach of the op;
gutter broom is in action, but even develops
erator in all positions of the head‘. ,
I
.
Still another object of the invention is to
or load of the elevating; lever which largely provide means‘ to relieve the bristles of the
upward reaction from the depressing thrust
It; U
relieves the bearing of the swinging head or broom‘ from excessive lateral thrust‘ against
controlling arms upon the vehicle‘ frame.‘ the curb during gutter swecpin' g, and to this
100
Another object of theinvention is to adapt fend, another feature of the invention‘ con
.ihe gutter broointo auton'iatically feed‘ out sists in int'erposing between the bodyjof the
'arr:lly'toward the curb or other obstruction, broom and‘ ‘the curb, preferably in‘ a‘ hor1
and to this end, another feature of ,the- in-‘ zontal plane intermediate of the dlsk of the ; 105
vention consists in combining the features ‘broom and‘ its surface of contact, a curb
of limited segn'ient oi ‘contact and freedom guard that will impinge against the, curb un~ '
of horizontal swinging. ‘I A subordinate fea~r der excessive: outward. feed of the‘ broom
ture incident to the preferred means for and before the‘bristles are unduly de?ected
‘on
rcalizingthis ob]cc_t consisting niprovidlng inwardly or'sulnected tO_‘GXCQS_S1VQ \vearing_ 1,10
y 2
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pressure; this curb guard being preferably journaled in a swinging head 5 comprising
in the form of. anannulus supported with a cylindrical‘ housing 5f‘v and" a supporting
freedom of rotation in order to reduce the bracket 51’, and terminates in a gear box 6 in
friction of its own contact with the curb,‘ which its bevel gear 7 meshes with a gear 8
and also being, in the preferred embodiment on the Stub- shaft 9 which is connected through
of this feature of the invention,‘ supported universal joint 10, connecting rod 11, and uni
upon the broom through means of a sleeve versal joint 12 witha horizontal shaft 13
that is eccentric to the shaft of the broom, which is] driven from ; the power plant 2.
and therefore adapted, by rotation of the Swinginghead 5 is connected with chassis
eccentric to different relative positions, to frame 1 through means of radius "arms 14, 15
_ vary the offset of the curblguard toward the vertically spaced apart so that they can swing 1
curb and render the limiting actionv apprO in horizontal planes above and" below said
priate to different stages
the length of the frame, and having ‘their ends remote from
the head connected with the frame‘ through
. r
In the accompanying drawings which show pintles 16, 17 lying in, a vertical axis distant
that portion of a sweeping machine with from the head 5 in the longitudinal direction ‘
.which the present invention is immediately of the machine. Head '5 is therebypadapted to
bristles as they wear away in use.
15
concerned and 111 which the'preferredyem-l swing horizontally about thepintles 16,17
20
bodnnents of theseveral features of the 1n? an axis and in, a direction ,approxin'iately ,
venti'on‘are included by way of illustration— transverse to the longitudinal axis of the ma
Figure 1 1s a side elevation of the forward chine; and said head, while thus free to swing,
‘ portion of a sweeping machine including its‘ is rigidly sustained by the radius arms against
power developing and transmitting’elements torsional displacement and is thus adapted-to
and certain elements of control.
de?nitely?x the position ofthe vertical shaft
.
Figure 2 isa plan view of the same, with 4. Shaft ilis mounted in the head 5 at an an
certain part-sof the vehicle omitted.
gle ‘to the vertical that insures surface ‘con- ‘
‘
Figure 3 is a vertical axial section showing tact of the broom 3 only at'a forward and out?
details of the construction, mounting and con er sector of the broom so that when the broom
30
is rotated counterclockwise,'as viewed in Fig
trol of’ the gutter broom.
, Figure 4 is an elevational view of parts ure 2, it tends to~“walk’_’ or automatically feed
05
shownin Figure 3, as viewed from the right“ outwardly toward the curb withreference to
which the machine is being driven, ‘and’ thus
~
.
v
.
, Figure 5 1s a plan view, and Flgure 6 IS a insures engagement of the‘bristles with the
in the latter ?gure.
35
s1de_ elevation of a modified mounting for entire area of the gutter and anglebetween the
the gutter broom whereby it is permitted to .‘gutter surface and the curb. “
IOU
feed'outward when in contact vwith the- sur-' 18 represents .a limit stop mounted on‘ the
frame land extending across the path of one
' face and retracted when raised therefrom.
Figure 7 is a planview showing a third of the radiusv arms. for instance.,the arm 15, 1
method of mounting a gutter broom ‘with, out-:
40 ward feed and automatic retraction. '
'
to limit the outward movement of the broom 8y i ; ~
under the action just described. 19 represents]
105'
Figure 8 1s aplan view showlng a fourth a spring’whic'h may be employed if desired
method of reallzing the functlons of outward for normally drawing back the broom ‘when
feed and‘ automatic retraction of a gutter raised out of contact with the surface; or the
broom.
.
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broom maybe drawn inward through means
L
Figures 9 and 10 are, respectively, a side ele _ of a lever,'now to be described, 'by which the
vationipartly in axial section, and a plan View ' broom is raised and lowered. ‘
of a gutter broom having associated therewith
no
,To adapt the broom 3 to be‘raised and
a curb guard and means for changing the off- ' lowered relativelvto its mounting and thus
or "ithdraiwn from working po
setof said guard in'the direction of thecur . presented
Figure 11 is a view similafrtoFigureQ show-y sition. the broom ispreferablv fitted to slide
mg the curb guard mounted‘uponfthe gutter up and down upon i t-s'shaft a, the latter being
brooinavitli freedom of rotation but without‘ fired against vertical inovi-inent 1n the head
adjustment.
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I Figures 12 and13 are, respectively, a side
5; and iii-order hat the broom may be loaded ~
by‘ its elevating and depressing mechanism.
elevation and a plan view showing still an , and'the bearing of the head?) as well as the
other method of mounting-acurb guard upon ‘ upper radius arm 14 uponthe ‘frame 1 largely
a gutter broom. ‘
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relieved when thebr'ooin is in‘ operatiomtli'e _
Referrmg more particularlv to Figures 1 elevating and "depressing mechanism‘ is
and 2, 1 represents the chassis frame and 2 the mounted upon the head 5 and involves‘not'_
‘power plant of a motor propelled sweeping only means for sustaining the broom in ele~ ,
machine. and 3 representsia gutter broom ‘ vat-ed position but means forjregulat-ing the
mounted on said machinewith its shaftét in depression of the broom upon‘ its" shaft.
approximately, vertical position. In order
which latter n'ieans is adjustable inorder to‘ '
that the gutter broom 3 may move outward mnn'iensate for reduction of the vY-rtical dig
and inward laterally of the frame 1, shaft at is n'iension‘of' the broom as the bristles wear
lISU
1,687,728
3,.
away. Thus, the raising and lowering mech with a curb guard 37 (Figures 9, 10,‘an_d 11)
511115111‘ may comprise a fulcruming arm 20 or 37ml ‘(Figures 12 and 13.) in the form of an
mounted on the gear box 6, and a. lever21 1 annulus surrounding the body of bristles in
fulcrumed at 21“ onsaid'arm, connected-by V a planc'intermediate between the sweeping
U:
10
links‘22 with‘ the broom 3, and having its
manipulating end‘ 23 extended towardythc
axis 16, 17 upon which the broomxswings,
which brings the lever within convenient
reach of the» operator occupying the seat 24,
and is sufliciently near the ‘axis of swinging
movement to greatly reduce the are through
which the grip of the lever swings, and
surfaceand the disk of the. broom, and this
guard is preferably mounted with freedom
of rotation, as, for instance, by supporting
it ‘through-means of a spider 38 (Figures 9,
10 and 11) ina bearing 39 (Figures 9'pan‘d 10)‘
or 38“. (Figures 11, 12, and‘13): carried by
the broom. - And in, order that the. guard 37
may“ be ‘ adjusted.‘ relatively“ to" the ‘ axis of
therefore avoids lIlOVlHg' the 'lever?beyond thebroom and thus compensate for changes
reach vof the operator. ‘ Segment rack 25 re
in thcfjdiameter ‘of the body of bristles as the
ceiv-cs't-he locking dog 2610f the lever’2‘1 ‘1n ‘latter wear awayfthe bearing, 39 is provided
. the notch 27 for holding the broom elevated.
H“
hya sleeveilO (Figures 3, 9 and 10) mounted
The position of the joint 28 between links upon the hub-41((FigJ3) orv 41“ (Fig. ‘) of
22v and leverQl, in relation to the fulcrum the broom through the ‘medium of an'eccen
20 of said lever and the mass of the free ‘end trio 42' which is adapted toibe adjusted to
of ‘the lever ‘beyond said joint 28' is such and held in any designed rotary position by
that not only does the ‘load of the lever ‘assist means of lever43u By adjusting the sleeve
in depressing the broom, but reaction "from 4.0 vertically, as,.for instance, by releasing
such downward thrust develops a substan and resetting theset screw 40“ (Figs. 3 and
tial upward moment on the fulcrum arm 20, j 9)‘ the height of the. guard 37 can be changed
which, transmitted'to the swinging head 5, appropriately to changes in the height of the
largely relieves the‘ bearing of the head and brush resulting from wearing away ofthe
the radius arm 14 upon the frame.
30
,
bristles
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Shaft 13 drives the connecting rod 11
If desired, the curb guard may be mounted
through means of bevel gears 30,. 31. ‘of directly upon‘ the broom and without radial
which the gear 30 is carried by the shaft 13 adjustmrnt, as shown in Figures 12‘ ‘and 13, .
but is loose thereon and enters into driving wherein the annulus ‘37a is rotatably‘ sup
relation thereto through vmanipulation of the ported on arms 38“ bolted directly to’ the
clutch 321
Thus, the shaft 13 can‘be em~ ‘ disk of the brooms
ployed for driving other: mechanisms which For supporting the broom with freedomvof
‘enter into the organization of the complete, lateral swingingmovementrelatively to the
1m)
sweeping machine,'such, for instance, as the machine frame upon which it-is mounted,
main sweeping broom, elevator, "etcqnot‘ means other'than-‘that disclosed in Figures 1
shown, and thus the gutter broombmay be and 2 may be employed.‘ For instance, as
i completely thrown out of action when. the 'ma .shown in Figures .5 and 6. the head 5“ and‘
chine is used for sweeping unobstructed SUI‘: gear boxq6x may be mounted to slide upon
faces or in situations where the. gutter broom the arcuate guides '44: ‘through : means of
is not desired.
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sleeves 45 and rolls 4-.6, springs 47'“ being ar
, Shaft 13 is preferably driven through bevel ranged ito normally draw the broom inward.
gears 33 from shaft 34 of an auxiliary trans Or,_as shown in Figure 7,‘ a head 5!‘ and gear
mission 35, which in. turn receives its drive box 6y’ may be sustained with lateral move-J Ill)
from thernotor shaft 36. the ,auxiliarytranse ment relative to the machine frame through
mission 35being preferably separate anddis means of a lazy—tong constructlon 48, spring
. tinct from the. transmission through which 47?’ ‘being provided ‘for normally returningv '
the shaft 36 propels th'e‘sweeping machine. the broom. Or, as shown in Figurehtthe
7 These features are described and claimed in
gutter broom, and its appurtenant mountings
my application filed "of even date herewith1 maybe sustained by a radiusarm 49 pivoted
and scriallynumbered 67 5,441; and except for toa bracket arm 50and provided with‘a con
certain novel features in‘ the variable“ speed trolling spring 51 for drawing it inward.
drive of brooms. including the gutterbrooin,
LY Cl
in relation to resume of the machine, as
when not inuse. ;
,Iclaimri
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well as the condition of drivingr either or
1. In a machine for sweeping surfaces ad
' ‘both brooms independently of the propulsion jacent to curbs, a, frame, a rotary broom posi
of the machine when desired. they bear no tioned with its, axis of rotationv approximately
special relation to the construction and ou~ vertical but‘inclined the vertical‘planc of
eration ofthegutter broom per so, which travel, to limit its» contact ,witlithe swept‘sur
forms the subjectsmatter of the present ap-‘ face to a: sector which‘i‘n the rotation of’ the .
plication.
.
.
i
broom moves away from‘thecurb. means to .
In order to avoid ‘undue wear upon the tati'ng the broom and developing from said
($5
bristles of brush 3 by outward tl’u'ustwofkthc rlimiitedscctor of contactau inherent feed in <1‘
brushagainst the curb‘, brush 3 is provided force in?‘ the broom which“ is toward the curb7
l
mo
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1,687,728‘;
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and a broomecnounting connecting the broom a pair‘of horizontally ‘swinging vertically
with the frame with freedom ofthe broom'to spaced radius arms, eachaconnected at one
end with the head and havingyits other end
respond to said feeding force.
a
2. In a machine for sweeping surfaces ad pivotally connected to the frame ;[and' said
jacent to curbs, a frame, a rotary broom posi limit, stop being mounted on theframeand
tioned with its axis of rotation approximately projecting across the path ofone of said
vertical but inclined ‘in the "vertical plane of
6. In a sweeping machine a frame, a rotat
travel, to limit its contact with the swept sur
radius
10'
‘Y
arms.
"
t
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a
'
1
70
f
face to: a sector whichiin the rotation of the ing broonn'a broom-mounting positioning the
broom moves awayrfrom the curb, means ro broom with its axis of rotation approximater 75
tating. the broom and developing fromcsaid ly'vertical but inclined in the plane of travel
limited sector of contact ‘an inherent feeding of the machine andwith freedom of ‘the
force in the broom which is toward the curb, broom to move downwardly and upwardly to
a broom-mounting connecting the ‘broom with and from the-swept surface. saidbroom
15 the fra'meiwith freedom of the broom tore-I ‘mounting being movable laterally to and
spono to said feeding force,rmea‘ns for I‘tllSlIlg: from thermachi'nda vertical support for said
‘said broom fromsurface contact,‘ and means laterally‘ ; movable broom-mounting, and
fordrawing the broom toward the frame broom-raising means‘ carried upon and sus
when so raised, acting constantly‘ but yield tained against vertical displacement bylsaid
20 ingly upon the broom, and beingof less force broom-mounting, adapted to press the broom
than the outward feeding force inherent in downward, and reacting upwardly ,upon' the
broom-mounting and reducing the pressure
, the broom when it is in, surface Contact‘
3. Ina machine'for sw eping surfaces ad~ of the mounting upon said vertical support
jacent to curbs, a fra-me,,a rotary broom posi- I
tioned with its axis of rotation approximately
while the broom is depressed;
~
841
"
7. In a sweeping machine, aframe, a head,
vertical but inclined inv a direction to limit a radius. arm connecting. the head ‘with the
sweeping contact to a sector of the broom frame with freedom of horizontal, swinging
which, ‘in the rotation of the broom, moves movement in the head, a gutter broom jour~
30
away from the curb, means for rotating the nalied in said head,rand a pressuredevelop
broom means mounting the broom upon said ing means for depressing said broom upon the
surface; saidmeans being mounted on and
frame comprising a radius arm having piv
otalconnection with the, frame, and extend
sustained against :vertical displacement by
withrespect to the direction,: of travel of the
machineand swinginglaterally on said piv
otal connection under the resistance of the
‘broom, and means for limiting outward lat
upon the broom and thereby reacting 11p
wardly- upon the head from V the thrust inci-'
dent to, the depression of the broom, and
ing from said pivotal connection forwardly the head while imposing downward pressure
0: Cl
eral movement of the broom.
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4'. In a sweeping machine, a frame; a rotate;
40
largely‘relieving the load of the head upon
‘themachine when the broom is in action.
,8. In a sweepingmachine, a frame, a hori
wing‘ gutter broom, ahead in which‘said broom ,zontally i swinging radius arm '- pivotally
is mounted with freedom of movement of the ,nou‘nted on said frame and projecting for
broom Ito and from the swept surface and wardly from its pivot, a gutter broom having
with its axis ‘of rotatlon approximately verti~ an approziimately vertical shaft journaled in
cal, but inclined in a direction to limit'contact'
of the broom with the pavement, to a sector of
p the broom which moves away from the curb.
' during rotation, means connectlng said head
100
the forward free end of‘said arm, anda broom
elevating and depressing lever fulcrumed on
105
no
said arm andhaving positive lifting and de- l
pressing connection with said broom and hav
with the‘ frame said means being movable 171?,’ an operating end adapted for manipula- .
with the head laterally outward from the tron‘ extendingrearwardly toward the pD’Oli,"
frame under the feeding force of thebroom, of the arms"
and broom-raising means which presses the * " 9.1 In a machine for swee ainv surfaces ad
,
.
V
l“
e
,
broom downward when the broom is lowered; iacent to'curbs, a frame, a rotating broom, a ‘)
said broom-raising means being sustained by head inwhich said broom is rotatably mount~
and reacting upwardly ,upon the'head to re; ed with its axis approximately vertical but
duce the load of said head while pressing inclined in the plane ofmachine travel to
downwardly upon the broom. '
r
v
cause the broom to contact through a sector
' 5. In combination in a sweeping ‘machine, which moves away 'fromthe curb, and ‘with "
a frame, a gutter broom rotating about’ an freedom of the broom to move‘ downwardly
approximately vertical axis, ' means for and ‘upwardly to and from the'surface swept,
mounting said broom upon theframeand a radius arm mounting, said head upon the
permitting it to move bodilv outward thereon frame with‘ freedom of the head to swing lat
without changing the angular position of the erally, said radins arm being pivoted on the
axis of the broom, and a stop limiting said frame at a point in rear ofthe broom‘ and
swinging movement: said means'comprising thereby adapted to thrust the broom forward
ahead in which the broom is journalled, and lvi' in the travel, oft-he machine,‘ and a broom
130
1,687,721‘?
raising lever having lifting connection with means mounting said broom upon said frame,
the broom and fulcrumed on said head, where with its axis of rotation approximately ver
by the lever partakes of‘the lateral swing- ‘ tical and with freedom of the broom'to move
ing movements of the head and broom; ‘said laterally toward a curb, a guard for limiting
lever having a free manipulating end extend the approach of the broom to the curb, com
v35
ing rearwardlyrnear the radius arln and to
10
prising an annulus surrounding the axis of
ward the pivot of the radius arm.
rotation of the broom in an approximately
10. In a street sweeping machine, a gutter horizontal plane above the swept surface, and
broom, a head mounted to swing horizontally means carried with the broom in mounting
‘about a- center on’said machine in rear of said the ‘guard with freedom of rotation inde
head, a rotatable broom having a shaft jour-_ pendent of the rotation of the broom, the
nalled in said head and swinging bodily with last-‘named means being adjustable relatively
the‘head, a driving member mounted on the to said axis of rotation in a plane that
machine independently of sald head, and‘ a changes the approach of the’broom to the
15
connecting rod universally jointed to said’
curb.
'
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\
40
45
'
13. In a street sweeping‘machine, a frame,
a rotatable broom mounted on'said frame
driving member in the >l1ne of, said center . -
and extending forwardly therefrom and con
20
25
nected with said shaft.
11. In a machine for sweeping surfaces
adjacent to curbs, a frame, a rotatable broom,
means mounting the broom" upon the frame
with freedom of the broom to move laterally
toward a curb, and a guard mounted upon
said broom and limiting the approach of the
broom to the curb; said guard‘comp'rising an
annulus surrounding the axis of rotation of
the broom, in a substantially horizontal plane,
with its axis of'rotation in approximately
vertical position and movable bodily outward
relatively'thereto, toward acurb past which
the‘machine moves, a curb guard surround
ing said broom in an approximately hori
zontalplane at a height t iat adapts it ‘to en
55
counter the curb, an eccentric surrounding the
axis of rotation of said broom and upon which a
said guard is mounted, and means for ?xing
said eccentric at different angles ofrotation
at a level'above the swept surface and mount— to vary the offset oft-he
ed for rotation independent of the rotation
the said axis.
guard relatively‘ to‘
_
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Signed at Mattituck, New York, this 5th
12. In a machine for sweeping surfaces day of November, 1923.
' MOSES VOLNEY LIDDELLQ'
adjacent to curbs, a frame, a rotating broom,
of the broom.
'
i '
a
50