US2586554A - Street-sweeping machine - Google Patents
Street-sweeping machine Download PDFInfo
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- US2586554A US2586554A US680041A US68004146A US2586554A US 2586554 A US2586554 A US 2586554A US 680041 A US680041 A US 680041A US 68004146 A US68004146 A US 68004146A US 2586554 A US2586554 A US 2586554A
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- dirt
- bucket
- broom
- sweeping
- machine
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
- E01H1/04—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt taking- up the sweepings, e.g. for collecting, for loading
- E01H1/047—Collecting apparatus characterised by the hopper or by means for unloading the hopper
Definitions
- This invention relates tonew and improved dirt bucket structure for street sweeping machines, and more particularly to such a structurewhich is especially adapted for use in small size or. baby type street sweeping machines.
- a dirt bucket structure for use in a sman compact street sweeping machine where work ing space is very limited but. the material swept up by the main sweeping broom of the machine must be carried to a dirt box within the machine at a point relatively remote from the-sweeping range of the broom.
- Another object is to provide a movable dirt bucket structurefor a street sweeping machine wherein the dirt bucket is actuated from the opposite side of the main sweeping broom from which the sweepings are collected by the bucket.
- a further object of the invention is to provide improved means for operating a movable dirt bucket in a street cleaning machine.
- a still further object of the invention is to provide improved means for guiding amovable dirt bucket in a street sweeping machine.
- Yet another object of the invention is to provide improved meansfor assuring dislodgement of dirt from the dirt bucket for quickly emptying the bucket 'for return to dirt-receiving position
- an elongated dirt bucket is supported trans:
- Another feature of the invention resides inhaving the dirt bucket pivotally mounted rearwardly chine and adapted to be actuated from the rear of the machine.
- FIG. 4 is a fragmentary sectional detail view tak s bs antially al nethe ine i -I o F ure -1.
- the sweeping section I l of the machine may be constructed principally from sheet metal, including side plates 18 and a top plate 19 secured together in substantially inverted U-shape to provide a housing. Support of the sweeping housing by the rear wheels is preferably effected through the medium of respective sleeves 20 secured to the lower rear edge portions of the side plates 18 and affording a mount for a rear wheel axle 2
- a splash guard and closure plate structure 22 at each side of the sweeping section II partially encloses the associated wheel l4 and the chain and sprocket mechanism l as Well as other operating structure for the machine.
- a main sweeping broom 24 of the rotary cylindrical type Mounted for operation partially between the forward portions of the rear wheels l4 on an axis parallel to the axle 2
- This broom embodies any preferred construction and comprises radial bristles mounted about a suitable core supported by an axial shaft 25 which may be mounted in suitable fashion parallel to the axle 2i upon the rear ends of supporting arms 21 pivotally connected at their forward ends adjacent the bottom of the cab l2.
- Power for driv ing the sweeping broom 24 counterclockwise, as seen in Figure l, in the forward motion of the sweeping machine is derived from the self-contained power source of the machine and is transmitted through suitable sprocket chains 28.
- the dirt which is swept up by the main sweeping broom 24 as the machine is propelled forwardly along a roadway to be cleaned is thrown forwardly into a dirt bucket 29 adapted to be actuated periodically from the dirt collecting position to a position for deposit of the collected dirt into a dirt box 30.
- the mouth of the dirt box 30 is preferably disposed within the upper portion of the housing defining the sweeping section ll of the machine, and preferably above the sweeping broom 24. From its mouth, the dirt box 30 extends downwardly diagonally rearwardly to a dump door 3i which closes its lower end and forms the lower rear extremity of the sweeping section housing.
- the dirt bucket 29 is preferably a little longer than and at least as long as the sweeping broom 24 and in operation extends transversely across the machine slightly forwardly of the sweeping broom and elevated slightly above the road level in such a relation to the sweeping broom as to receive'efiiciently the dirt normally swept tangentially forwardly and upwardly by the broom 24.
- the dirt bucket 29 In a light weight construction of the dirt bucket 29, it is formed simply from an identical pair of end or side plates 32 and a body plate 33.
- the side plates 32 are trimmed to the desired contour which afiords a straight vertical rear or mouth edge 34, a lower upwardly inclined lip edge portion 35, a relatively straight generally horizontal bottom portion 37, a rounded forwardly bulging edge portion 38, an upwardly and rearwardly diagonal portion 39 diverging from the bottom portion 31, and a top narrow generally horizontal portion 40.
- the body plate 33 is shaped to conform to all but the rear contour of the side plates 32 and is secured thereto in any suitable fashion such as by welding. This provides a strong, simple; inexpensive, lightweight dirt 4 bucket of relatively large capacity and having a cross section, as seen in Fig. 3 conforming to the described shape of the side plates.
- Means for supporting the dirt bucket 29 for movement between a dirt collecting position, as indicated in full outline in Figure 1, and a dirt discharging and depositing position over the mouth of the dirt box 30*, as indicated in broken outline position in Figure 1, comprises a supporting and actuating lever structure 4
- An effective arrangement for the lever structure 41 comprises in each instance a long flat lever arm 42 extendin arcuately forwardly from adjacent the rear wheel axle 2
- the lever arms 42 are secured fast to the respective opposite outer ends of a reinforcing and connecting bar 43 secured rigidly across the upper portion of the bucket side plates 32 and extending through and slightly outwardly therebeyond for receiving the lever arms.
- the lever arms 42 are rigidly secured together and to the respective opposite ends of the dirt bucket 29 and the dirt bucket is strongly reinforced by the rod 43.
- the rod 43 is welded to the ends of the respective lever arms 42 and to the side plates 32, the latter being initially provided with suitable apertures 44 therethrough for the respective end portions of the bar 43.
- the bar 43 may be formed of a tubular structure.
- the long lever arms 42 are secured to respective bracket structures 45 each of which is formed with a sleeve 46 ( Figure 4) by which it is journaled on the rear wheel axle 2! for free pivotal movement about the axle to swing its lever arm 42 through an oscillatory range within the dirt collecting and dirt depositing limits of the dirt bucket 29. Clearance for swinging movement of the respective lever arms 42 is afforded between the side plates l8 and the sides of the dirt box 30 (Fig. 5).
- may comprise an hydraulic actuator 41 which is supported pivotally at its upper end by a pin 48 secured between the adjacent housing side wall 18 and the adjacent side wall of the dirt box 30. At its oppositeend, the hydraulic actuator 41 is secured through the medium of a piston rod 49 with a short bell crank lever arm 50 extending rearwardly from the lever bracket structure 45 and formed with a bifurcated ear 5! ( Figure 5) within which the end of the piston rod 49 is pivotally pinned.
- Both of the hydraulic actuators 41 are, of course, coordinated in operation to act simultaneously and a suitable hydraulic operating system (not shown) may be provided for control of the actuators by the operator sitting in the cab l2 of the machine.
- the dirt bucket 29 In the dirt collecting position, the dirt bucket 29 is supported with the lower wall portion 31 thereof substantially parallel to the road surface and the upwardly diagonal surface 39 thereof disposed substantially perpendicular to a tangent with the lower-sweepingsideof the broom 24 so as. sto provide a. deflector. for dirt swept thereagainst by the broom. Dirt droppingfrom. the de flector is retained in the receptacle of the bucket formed by @thehorizontal wall portion31 and the curved. portion 38. Thelip portion 35 of the bucket, of course, restrains the collectedidirt from unintentionally leaving thebucket.
- the deflector 53 serves also as a splash shield, cooperating in this respect with the bottom of the dirt box 30.
- a dirt shield 54 which serves also as a transverse reinforcement for the side walls [8 of the housing of the sweepin section.
- any tendency of the dirt bucket 29 to swing transversely of the machine due to the relatively long leverage of the supporting lever arms 42 and which, of necessity are fairly thin due to the narrow clearance within which they must operate between the side walls 18 and the dirt box 30, is avoided by appropriate substantially frictionless guiding means.
- such means comprises a roller 55 carried in each end of the dirt bucket and cooperating with a respective guide track 5! on the adjacent housing side wall l8.
- Each of the rollers 55 is carried by a suitable bracket 58 secured to the adjacent end plate 32 of the bucket and projecting upwardly therefrom in substantially intersecting relation to the plane of the diagonal wall 39.
- the tracks 51 are each in the form of a sheet metal strip formed on an arc corresponding to the arc of movement of the dirt bucket while traveling from the dirt collecting position to the dirt depositing position.
- This strip may be secured to the inside face of the respective housing side wall [8 as by riveting, welding, or the like.
- each of the guide tracks 51 is formed at its upper extremity with a buffer or stop flange 59 extending inwardly at right angles therefrom into the path of the guide roller 55 traveling the respective track in the movement of the dirt bucket.
- a resilient bumper block :60 which may be formed from suitable rubber or other resilient material acceptable for this purpose.
- Such bumper block' may besecured to the ,flange 59sby suitable means such asattachment screws or bolts 6
- suitable means such asattachment screws or bolts 6
- the clearance :of the dirt .bucket '29 above the roadway is suflicient to accommodate -sweepings propelled by a side broom Blunder the dirt bucket toward the mainsweeping broom zd 'whiohp in turn, drives the dirt into the dirt bucket.
- the side broom 62 may be driven from the same source of power and through similar control mechanism as the main sweeping broom 24.
- a street sweeping machine having a rotary type main sweeping broom and a housing including side'plates defining a passageway for a swingable dirt bucket, an elongated bucket structure having an open mouth facing the discharge side of said broom, said bucket structure having side walls substantially parallel to said side plates, and guide means secured to the outer side of each bucket side wall, said guide means in each instance comprising a flange secured to the respective bucket side wall and extending outwardly and upwardly from such wall and a roller secured on said flange for rotatable contact with the adjacent side plate of said housing for maintaining said bucket in spaced relation to said side plates as the bucket moves between a dirt receiving and a dirt discharge position.
- a power sweeper machine including a frame and a sweeping broom mounted transversely in the frame immediately in front of the rear axle of the machine, a dirt bucket having a mouth directly adjacent the forward side of the broom to receive sweepings therefrom, a dirt bucket support arm pivoted on the rear axle and circumferentially curved around the broom, an inelined hopper mounted in the frame with an opening for receiving dirt from said bucket as it is pivoted on said curved support arm, said hopper having a discharge opening to the rear of the rear axle of the machine, and means at the rear side of the broom connected to said arm to actuate the arm for swinging the bucket upwardly over the broom to the discharge position.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Description
Feb. 19,1952 c.w. MOTT 2,586,554
STREET-SWEEPING MACHINE Filed June 28, 1945 2 SX-lEETS-SI-IEET 1 ITVEUZLIUT v CARL W Marx Feb. 19, 1952 c. w, MQTT I 2,586,554
STREET-SWEEPING MACHINE Filed June 28, 1946 2 SHEETSSHEET 2 Patented F eb. 19, 1952 2,586,554 STREET-'SWEEPING MACHINE C Mottv La G e a k. assi nq to Elgin Sweeper C an E sie lt a c mic:
tion of Illinois Application June 28, 1946,- Serial N0. 68l ),041-
3 Claims- 1 This invention relates tonew and improved dirt bucket structure for street sweeping machines, and more particularly to such a structurewhich is especially adapted for use in small size or. baby type street sweeping machines.
Among the objects of the invention is the provision of a dirt bucket structure for use in a sman compact street sweeping machine where work ing space is very limited but. the material swept up by the main sweeping broom of the machine must be carried to a dirt box within the machine at a point relatively remote from the-sweeping range of the broom.
Another object .is to provide a movable dirt bucket structurefor a street sweeping machine wherein the dirt bucket is actuated from the opposite side of the main sweeping broom from which the sweepings are collected by the bucket.
A further object of the invention is to provide improved means for operating a movable dirt bucket in a street cleaning machine.
A still further object of the invention is to provide improved means for guiding amovable dirt bucket in a street sweeping machine. v
Yet another object of the invention is to provide improved meansfor assuring dislodgement of dirt from the dirt bucket for quickly emptying the bucket 'for return to dirt-receiving position,
According to the general features of theinvention, an elongated dirt bucket is supported trans:
versely of. a street sweeping machine with the mouth thereof opening towardthe mai :SW 6p-v in broom-of the mach n to receive h w enin s therefrom in the forward movement ofthe machine ,along a roadway to be swept, the bucket being mounted for movement Withint e machine fordepositing sweepings collected therein into a dirt box. which has its mouth adjacent to, the topof the machine.
Another feature of the invention resides inhaving the dirt bucket pivotally mounted rearwardly chine and adapted to be actuated from the rear of the machine.
According to still another feature of the invention improvedguidingand dirt dislodging strucu e s o d d or t u t v o b e dir bucket so that the dirt bucket. is u ded m othly within close operating "c earances t t e-fi th? 9? mouth ofthedit b xand whe in ill l t Q15? charging positionis, .jcl ediqr PoitiYe .-Sli198"- ing .the .dirt thereiromin q the 1 J 9??- Other cmectsre tures. a d advanta se the present invention will :be readily. Pe rce f the following.det ilflldesfilitliiw. 9f Y embodimentqr.themventiontalsee-t f fli th the I acccmnanyina we 9f; i??... which; t
Fi ure lie a..-'. io e-@r ls s eee patic partially sec io al sice-elevatic eluw 91 a t eet. team i achine smearin th ai iet ie d t bucket s ructured i iefizie i i iv e- Figure 2 is a rear 9r mouth elevat alviewof the dirt uckt 'aken seb' taeealr "it? the? fl e II. of e i ure 3 is ve tc al ect rial v ewthrel h t e d rt b cket take subs an ial n i 2 lil Figure 4 is a fragmentary sectional detail view tak s bs antially al nethe ine i -I o F ure -1.
Fi ure 5 n enlar a nta vh r mnta se t o al detai V e t k n subs ant a l a ne we l V-V fi eur 'l Fi u e s nswer d! fra m n ar se t nal det l view taken su e enti llvee th lin ITVI olffiggrre'y a A dirt bucket structure embodying thefeatures of the ere-sect nve eeisespe Mercat use in a sel1f.-
a, cooperative y inter en n fille ca t supportin th -item; ne e f!" t a framewo k: 9 cementin truqt i a member ma -Pals 999 i tr e tor c b a plafio astrue ura 1611 with the r ar sw pi see tioa U Q l hefiia. Mobilitypfthe, a dr in :Wh. s tP l19 tt -s e a section ii and driven insuitable m anner as by m n e a hain andseroek l; driv 21 iii P we se t n .0. whi e t iront .Q th e'a m i unner r s e able te E6 m ta ei 11 der the chassis l3. Operating .contrplof the rear e l ar na he e ectemm the Feb t? impu n-th me e ans er ransnis qn sys:
em ludi .c et leve .l
For light weight and compactness, as well as improved efficiency, the sweeping section I l of the machine may be constructed principally from sheet metal, including side plates 18 and a top plate 19 secured together in substantially inverted U-shape to provide a housing. Support of the sweeping housing by the rear wheels is preferably effected through the medium of respective sleeves 20 secured to the lower rear edge portions of the side plates 18 and affording a mount for a rear wheel axle 2|. (Figures 1, 4 and 5.) A splash guard and closure plate structure 22 at each side of the sweeping section II partially encloses the associated wheel l4 and the chain and sprocket mechanism l as Well as other operating structure for the machine.
Mounted for operation partially between the forward portions of the rear wheels l4 on an axis parallel to the axle 2| and accessible through appropriate cut-out openings 23 in the lower portions of the side plates I8 is a main sweeping broom 24 of the rotary cylindrical type. This broom embodies any preferred construction and comprises radial bristles mounted about a suitable core supported by an axial shaft 25 which may be mounted in suitable fashion parallel to the axle 2i upon the rear ends of supporting arms 21 pivotally connected at their forward ends adjacent the bottom of the cab l2. Power for driv ing the sweeping broom 24 counterclockwise, as seen in Figure l, in the forward motion of the sweeping machine is derived from the self-contained power source of the machine and is transmitted through suitable sprocket chains 28.
According to the present invention the dirt which is swept up by the main sweeping broom 24 as the machine is propelled forwardly along a roadway to be cleaned, is thrown forwardly into a dirt bucket 29 adapted to be actuated periodically from the dirt collecting position to a position for deposit of the collected dirt into a dirt box 30.
As best seen in Figure l, the mouth of the dirt box 30 is preferably disposed within the upper portion of the housing defining the sweeping section ll of the machine, and preferably above the sweeping broom 24. From its mouth, the dirt box 30 extends downwardly diagonally rearwardly to a dump door 3i which closes its lower end and forms the lower rear extremity of the sweeping section housing.
The dirt bucket 29 is preferably a little longer than and at least as long as the sweeping broom 24 and in operation extends transversely across the machine slightly forwardly of the sweeping broom and elevated slightly above the road level in such a relation to the sweeping broom as to receive'efiiciently the dirt normally swept tangentially forwardly and upwardly by the broom 24.
In a light weight construction of the dirt bucket 29, it is formed simply from an identical pair of end or side plates 32 and a body plate 33. The side plates 32 are trimmed to the desired contour which afiords a straight vertical rear or mouth edge 34, a lower upwardly inclined lip edge portion 35, a relatively straight generally horizontal bottom portion 37, a rounded forwardly bulging edge portion 38, an upwardly and rearwardly diagonal portion 39 diverging from the bottom portion 31, and a top narrow generally horizontal portion 40. The body plate 33 is shaped to conform to all but the rear contour of the side plates 32 and is secured thereto in any suitable fashion such as by welding. This provides a strong, simple; inexpensive, lightweight dirt 4 bucket of relatively large capacity and having a cross section, as seen in Fig. 3 conforming to the described shape of the side plates.
Means for supporting the dirt bucket 29 for movement between a dirt collecting position, as indicated in full outline in Figure 1, and a dirt discharging and depositing position over the mouth of the dirt box 30*, as indicated in broken outline position in Figure 1, comprises a supporting and actuating lever structure 4| at each end of the bucket.
An effective arrangement for the lever structure 41 comprises in each instance a long flat lever arm 42 extendin arcuately forwardly from adjacent the rear wheel axle 2| on an ample radius to clear the main sweeping broom 24. At their forward ends the lever arms 42 are secured fast to the respective opposite outer ends of a reinforcing and connecting bar 43 secured rigidly across the upper portion of the bucket side plates 32 and extending through and slightly outwardly therebeyond for receiving the lever arms. Thus, the lever arms 42 are rigidly secured together and to the respective opposite ends of the dirt bucket 29 and the dirt bucket is strongly reinforced by the rod 43. By preference the rod 43 is welded to the ends of the respective lever arms 42 and to the side plates 32, the latter being initially provided with suitable apertures 44 therethrough for the respective end portions of the bar 43. For light weight and yet ample securement and rigidity, the bar 43 may be formed of a tubular structure.
At their rear extremities, the long lever arms 42 are secured to respective bracket structures 45 each of which is formed with a sleeve 46 (Figure 4) by which it is journaled on the rear wheel axle 2! for free pivotal movement about the axle to swing its lever arm 42 through an oscillatory range within the dirt collecting and dirt depositing limits of the dirt bucket 29. Clearance for swinging movement of the respective lever arms 42 is afforded between the side plates l8 and the sides of the dirt box 30 (Fig. 5).
Means for oscillatory swinging of each of the dirt bucket lever structures 4| may comprise an hydraulic actuator 41 which is supported pivotally at its upper end by a pin 48 secured between the adjacent housing side wall 18 and the adjacent side wall of the dirt box 30. At its oppositeend, the hydraulic actuator 41 is secured through the medium of a piston rod 49 with a short bell crank lever arm 50 extending rearwardly from the lever bracket structure 45 and formed with a bifurcated ear 5! (Figure 5) within which the end of the piston rod 49 is pivotally pinned. With this arrangement, when the hydraulic actuator 41 is operated to protract the piston rod 49, the bell crank lever arm 50 is driven to effect counter-clockwise pivotal swinging of the lever bracket structure 45 and thereby the long lever arm 42 and thus elevation of the dirt bucket 29 toward dirt depositing position at the mouth of the dirt box 30.
Both of the hydraulic actuators 41 are, of course, coordinated in operation to act simultaneously and a suitable hydraulic operating system (not shown) may be provided for control of the actuators by the operator sitting in the cab l2 of the machine.
In the dirt collecting position, the dirt bucket 29 is supported with the lower wall portion 31 thereof substantially parallel to the road surface and the upwardly diagonal surface 39 thereof disposed substantially perpendicular to a tangent with the lower-sweepingsideof the broom 24 so as. sto provide a. deflector. for dirt swept thereagainst by the broom. Dirt droppingfrom. the de flector is retained in the receptacle of the bucket formed by @thehorizontal wall portion31 and the curved. portion 38. Thelip portion 35 of the bucket, of course, restrains the collectedidirt from unintentionally leaving thebucket.
By having the dirt bucket ,29 elevated. rapidly to its discharge position at ,the mouth of, the dirt box 30, little if anywdirt will drop from, the mouth of the bucket because of gravitational and centrifugal force during movement. even though. the bucket is gradually inverted. inthe course of its arc of movement, toward discharge position- However, when the bucket comes-to a halt in the discharge position, the dirt ,can fall therefrom .substantially unimpeded because, as best seen 'in the broken line discharge position of Figure 1, the walls of thebucket divergeto- Ward the mouth.
spilling over the sides of dirt discharged-from the dirt bucket into the dirt .box, 35 is avoided by-the provision of side deflector wings 52 at the upper side edges of the dirt box.
Any dirt which may 'escape the'lip 35 of the dirt bucket 29 or spill forwardly therefrom over the lipof the dirt box 30,;is returned in front of the broom 24-by-a-bafiie plate-53 carried by the forward lip of the dirt box and extending down to a position clearing the upper front portion of the broom. The deflector 53 serves also as a splash shield, cooperating in this respect with the bottom of the dirt box 30.
Forwardly of the operating path of the dirt bucket 29' is provided a dirt shield 54 which serves also as a transverse reinforcement for the side walls [8 of the housing of the sweepin section.
Any tendency of the dirt bucket 29 to swing transversely of the machine due to the relatively long leverage of the supporting lever arms 42 and which, of necessity are fairly thin due to the narrow clearance within which they must operate between the side walls 18 and the dirt box 30, is avoided by appropriate substantially frictionless guiding means. Herein such means comprises a roller 55 carried in each end of the dirt bucket and cooperating with a respective guide track 5! on the adjacent housing side wall l8. Each of the rollers 55 is carried by a suitable bracket 58 secured to the adjacent end plate 32 of the bucket and projecting upwardly therefrom in substantially intersecting relation to the plane of the diagonal wall 39.
The tracks 51 are each in the form of a sheet metal strip formed on an arc corresponding to the arc of movement of the dirt bucket while traveling from the dirt collecting position to the dirt depositing position. This strip may be secured to the inside face of the respective housing side wall [8 as by riveting, welding, or the like.
Means may be provided, in the present instance in association with the guide track structure 51, for limiting the movement of the dirt bucket 29 into the dirt-depositing position. Such means in the present instance also preferably comprises an expedient for jarring the dirt bucket slightly to assure quick discharge of dirt therefrom into the dirt box-30. Accordingly, each of the guide tracks 51 is formed at its upper extremity with a buffer or stop flange 59 extending inwardly at right angles therefrom into the path of the guide roller 55 traveling the respective track in the movement of the dirt bucket.
To. reduce ishoola each-of :the stop; flanges :53 is provided with a resilient bumper block :60 which may be formed from suitable rubber or other resilient material acceptable for this purpose.-
Such bumper block'may besecured to the ,flange 59sby suitable means such asattachment screws or bolts 6|. Thus, as the :dirt :bucket'reaches its limit .of movement, :in the dirt "discharging posie tionat themouth of the dirt box, the guide rollers 55 will strike the a bumper block 60, bringing the bucket andactuating structure to relatively abrupt halt and with'a moderate bump-effecting a jar in the bucket, substantially softenedby the resilience of the bumper block 60." Furthermore, due to the resilienceof the bumper block BU-by reason of which it is somewhat compressed as th'e associated roller strikes it, :there is also 'a certain rebound action tending to throw -the:dirt bucket structure into reverse; This causes, in addition to the j arring of the bucket as thero'ller initially strikes the bumper block-60, a jogging: action which further assists in dislodgingdirt :from the bucket into the dirt box. To efie'ctuatethese pur poses, of course, the bumper blocksto are pref erably of substantial proportions.
The clearance :of the dirt .bucket '29 above the roadway is suflicient to accommodate -sweepings propelled by a side broom Blunder the dirt bucket toward the mainsweeping broom zd 'whiohp in turn, drives the dirt into the dirt bucket. The side broom 62 may be driven from the same source of power and through similar control mechanism as the main sweeping broom 24.
Escape of dirt propelled by the brooms of the machine laterally from the space between the main broom 24 and the dirt bucket 29, is avoided by the provision of dirt guards or shoes 63 disposed just beyond the respective opposite ends of the main sweeping broom 24 and across the respective opposite ends of the space between the main broom and the dirt bucket.
It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the anpended claims.
I claim as my invention:
1. In a street sweeping machine having a rotary type main sweeping broom and a housing including side'plates defining a passageway for a swingable dirt bucket, an elongated bucket structure having an open mouth facing the discharge side of said broom, said bucket structure having side walls substantially parallel to said side plates, and guide means secured to the outer side of each bucket side wall, said guide means in each instance comprising a flange secured to the respective bucket side wall and extending outwardly and upwardly from such wall and a roller secured on said flange for rotatable contact with the adjacent side plate of said housing for maintaining said bucket in spaced relation to said side plates as the bucket moves between a dirt receiving and a dirt discharge position.
2. In combination in a street sweeping machine having a rotary main sweeping broom and a housing including side plates defining a passageway for a swingable dirt bucket, an elongated retain dirt therein, guide means secured to the outer side of the bucket side walls for maintaining said walls spaced from the side plates of the machine as the dirt bucket moves from a dirt re"- ceiving to a dirt discharge position, said guide means in each instance comprising a flange secured to the respective bucket side wall and extending outwardly and upwardly from such wall and a roller secured on said flange for rotatable contact with the adjacent side plate of said housing, and resilient bumper means secured to the side plates at the discharge position for engagement by said rollers.
3. In a power sweeper machine including a frame and a sweeping broom mounted transversely in the frame immediately in front of the rear axle of the machine, a dirt bucket having a mouth directly adjacent the forward side of the broom to receive sweepings therefrom, a dirt bucket support arm pivoted on the rear axle and circumferentially curved around the broom, an inelined hopper mounted in the frame with an opening for receiving dirt from said bucket as it is pivoted on said curved support arm, said hopper having a discharge opening to the rear of the rear axle of the machine, and means at the rear side of the broom connected to said arm to actuate the arm for swinging the bucket upwardly over the broom to the discharge position.
' CARL W. MOTT.
REFERENCES CI'IEfi The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 251,194 Cushing et al Dec. 20, 1881 492,489 Williams Feb. 28, 1893 557,297 Williams Mar. 31, 1896 631,096 Smith Aug. 15, 1899 681,514 Schumann Aug. 27, 1901 735,126 Menzies Aug. 4, 1903 771,787 Meyer Oct. 4, 1904 918,602 Seymour Apr. 20, 1909 1,175,678 Barnett Mar. 14, 1916 1,320,970 Beaty Nov. 4, 1919 1,371,345 Brackett Mar. 15, 1921 1,407,180 Todd Feb. 21, 1922 1,566,107 Leach Feb. 15, 1925 1,750,829 Wilson Mar. 18, 1930 1,906,001 Finlay et a1 Apr. 25, 1933 1,922,851 Howard Aug. 15, 1933 2,278,306 Cushman Mar. 31, 1942 2,300,192 Allen Oct. 2'7, 1942 FOREIGN PATENTS Number Country Date 28 896 Great Britain Dec. 15 1913
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US680041A US2586554A (en) | 1946-06-28 | 1946-06-28 | Street-sweeping machine |
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US680041A US2586554A (en) | 1946-06-28 | 1946-06-28 | Street-sweeping machine |
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US2586554A true US2586554A (en) | 1952-02-19 |
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Citations (19)
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US251194A (en) * | 1881-12-20 | Earth-excavating machine | ||
US492489A (en) * | 1893-02-28 | Street-sweeper | ||
US557297A (en) * | 1896-03-31 | Street-sweeper | ||
US631096A (en) * | 1899-01-07 | 1899-08-15 | James G Smith | Street-cleaning device. |
US681514A (en) * | 1901-02-19 | 1901-08-27 | Otto Schumann | Street sweeper or cleaner. |
US735126A (en) * | 1902-04-02 | 1903-08-04 | Robert Charles Menzies | Wheeled dirt-receptacle. |
US771787A (en) * | 1904-07-25 | 1904-10-04 | August Friedrich Meyer | Street-scavenging machine. |
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US2278306A (en) * | 1940-11-06 | 1942-03-31 | Claude A Pullen | Vacuum control for power sweeper brooms |
US2300192A (en) * | 1941-11-05 | 1942-10-27 | Allen Codell Company | Hydraulic controlled drag broom |
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US1320970A (en) * | 1919-11-04 | beaty | ||
US492489A (en) * | 1893-02-28 | Street-sweeper | ||
US557297A (en) * | 1896-03-31 | Street-sweeper | ||
US251194A (en) * | 1881-12-20 | Earth-excavating machine | ||
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US771787A (en) * | 1904-07-25 | 1904-10-04 | August Friedrich Meyer | Street-scavenging machine. |
US918602A (en) * | 1907-03-08 | 1909-04-20 | William Seymour | Street-sweeping machine. |
GB191328896A (en) * | 1913-12-15 | 1914-10-29 | Walter Barnett | Improvements in or connected with Road Sweeping Machines. |
US1175678A (en) * | 1915-07-02 | 1916-03-14 | Walter Barnett | Road-sweeping machine. |
US1371345A (en) * | 1917-05-15 | 1921-03-15 | Middlemiss And Brackett | Shoveling and loading machine |
US1407180A (en) * | 1920-07-12 | 1922-02-21 | Daniel M Todd | Gutter-cleaning attachment for street-cleaning machines |
US1566107A (en) * | 1922-07-14 | 1925-12-15 | Oshkosh Mfg Co | Street-sweeping mechanism |
US1750829A (en) * | 1925-02-16 | 1930-03-18 | Austin Mfg Co | Gutter-broom street sweeper |
US1906001A (en) * | 1932-02-23 | 1933-04-25 | Finlay John Spence | Shoveling machine |
US1922851A (en) * | 1932-04-30 | 1933-08-15 | Nicoll & Company Inc B | Self-loading dump-body |
US2278306A (en) * | 1940-11-06 | 1942-03-31 | Claude A Pullen | Vacuum control for power sweeper brooms |
US2300192A (en) * | 1941-11-05 | 1942-10-27 | Allen Codell Company | Hydraulic controlled drag broom |
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