US605415A - Street-sweeper - Google Patents

Description

(No Model.) 4 Sheets-Sheet 11. W. FRANZ. STREET SWEEPER.

Patented June 7, 1898.

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4 Sheets-Sheet 2.

(No Model.)

W. FRANZ. STREET SWEEPER.

Patented June 7,1898.

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4 Sheets-Sheet 3.

(No Model.)

W. FRANZ. STREET SWEEPER.

No. 605,415. Patented June 7,1898.

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(No Model.) 4 Sheets-Sheet 4. W. FRANZ.

STREET SWEEPER.

Patented June 7, 1898.

I lUNllTED STATE PATENT rmon.

WVILLIAM FRANZ, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE IMPROVED STREET SWVEEPER COMPANY, OF

PITTSBURG, PENNSYLVANIA.

. STF iEETf- SWEEPER.

SPECIFICATION forming part of Letters Patent No. 605,415, dated June 1898.

Application filed November 2 7,l897. $eria1No.659,964. (N model.)

To all whom it may concern:

Be it known that I, WVILLIAM FRANZ, a citi- Zen of the United States,residing at Allegheny, in the county of Allegheny and State of Penn sylvania, have invented a new and useful 1mprovement in Street-Sweepers; and .I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to street-sweepers. The main object of myinvention is to provide a street-sweeper which will sweep while turning around or in turning corners of streets and at the same time will allow the broom to sweep all ruts and crevices in the streets.

Afurther object of my invention is to provide such a form of broom as will prevent any dust or sweepings being swept out to the ends of said broom.

My invention consists, generally stated, in the novel construction, arrangement, and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claims. 2 5 To enable others skilled in the art to which my invention appertains to construct and use the sweeper, I will describe the same .more fully, referring to the accompanying drawings, in which i 0 Figure 1 is a side view of my improved street-sweeper, showing the parts in their normal position and the broom in position for sweeping. Fig. 2 is a top or plan view of the same. Fig. 3 is a longitudinal central sec- 5 tion of the same on the line 3 3, Fig. 2. Fig. 4 is a vertical central section of the same at right angles to Fig. 3. Fig. 5 is a detail section on the line 5 5, Fig. 4, showing the mechanism for driving the broom. Fig. 6 is a like view on the line 6 6, Fig. 4, showing the gearing mechanism. Fig. 7 is :a detail section of the clutch and operating means on the line 7 7, Fig. 4. Fig. 8 is an enlarged detail sectional view on the-line 8 8, Fig. (3. Fig. 9 is 5 a detail view of the endof the axle. Fig. 10

is a detail sectional view showing the manner of attaching the splints to the broom. Fig. 11 is a longitudinal central section of one end of the broom. Fig. 12 is a'vertical 1 1 central section of the broom on the line 12 12, Fig. 11; and Fig. 13 is a detail view of a portion of the broom.

Like letters herein indicate like parts in each of the figures of the drawings.

My improved street-sweeper is provided with an axle A,upon which are loosely mounted the two driving-wheels B, and between the spokes b on each wheel is an oil-pipel) for the passage of lubricant to the axle A) The spokes b on each wheel B are clamped together by means of plates b b and the plates b are provided with a sleeve b which encircles the axle A. A tank 0 is preferably counterbalanced and is rigidly secured to the axle A between the wheels Bby means of the collar 0 on each side thereof, and the tank 0 is provided with an opening 0 therein. Fitting around the axle A are the circular con-- veyer-frames d, which are located on the outside and oneach side of the tank O and are provided withsleeves d thereon for engaging with said axleA. Buckets D are secured to the conveyer-frames cl and pass over and across the tank 0, being secured to lugs or flanges d on the inner faces of the outer edges of the frames d. Between thewheels B and fitting over and around the tank 0 and buckets D is the casing E,which is secured around the axle A and has a rear portion E extending over a broom F, located in the rear of the axle A and operated therefrom, as hereinafter described. The casing E is supported at its rear by means of the wheel 6, which is adapted to turn at will and in any direction and is secured between the forksle on the end of a shaft 6 which passes up through bearings e secured to said casing E, and is held therein by means of the nut 6 secured on the upper end thereof and fitting against a plate 6 secured to the casing E. A spiral spring 6 is secured around the vertical shaft a between the bearings e to allow the wheel e to take up any unevenness in the streets, the. The casing E is provided on its bottom with a swinging portion or door G,which covers a portion of the opening 0 in the casing E and carries atits rear end the apron g, which is preferably formed of rubber and is secured to the door G in any suitable manner. The door G is supported on each side in the swinging frames 9 secured thereto on the outside of the casing E, and the frames g are pivoted at their upper ends to a rodg extending across the casing E, on the upper exterior surface thereof. Levers g are pivoted to the swinging frames g at g and are pivoted to levers g, which are pivoted at their opposite ends around a shaft g which extends across the exterior surface of the casing E and has a lever g secured thereto, which is operated by means of a rod 9 connected to its oppositeend and extending back tothe rear ofthe sweeper.

Two sets of gearing mechanism for operating the broom F are shown, one on each side of the sweeper between the wheels B and the casing E, as at H, and each set has gear-wheels h, rigidly secured to the sleeves b on the plates 12 secured to the wheels B. The gearwheels h are adapted to mesh with pinions h, mounted on shafts 71 supported in the forked frames 7L3, which are loosely mounted around the axle A and sleeves b and are also loosely mounted at their opposite ends around sleeves F on the broom F. Gear-wheels 71 are keyed or rigidly-secured to each of the sleeves b and are adapted to mesh with pinions 72 rigidly secured on shafts h, supported in brackets 71. secured to the casing E. Pinions h are rigidly secured to the shafts 72. and are adapted to engage with gear-wheels h loosely mounted around the sleeves d on the bucketframes d. The gear-wheels 77. are provided on the interior thereof with ratchet-wheels 71 9, which are keyed or rigidly secured to the sleeves d on the bucket-frames d, and pawls h 'are adapted to engage with the ratchetwheels h which are held in place or engagement by means of springs 71 between the pawls h and the inner face of the gear-wheels 71 The ratchet-wheels h and pawls 77. are held within the gear-Wheels h by means of clamping-plates 7e which are bolted to the gear-wheels h by means of bolts h and are loosely mounted around the sleeves d of the frames 01. The broom F is connected to the two gearing mechanisms H above described by means of sprocket-chains f, which pass around sprocket-wheels f, rigidly mounted on the shafts 77, in the forked frames 77. and the sprocket-wheels f rigidly secured to sleeves f which surround the shafts f of the broom F. Secured to the shafts f of the broom F are the 1'atchet-wheelsf ,which are adapted to be engaged by pawls f mounted upon the bolts f which secure the clamping-plates f and the cup-shaped flanges f formed on the ends of the sleeves f and extending over the pawlsf together. The shafts f are provided with cup-shaped endsf for confining the perforated hollow shaft f formed in semicircles,

and the solid wooden shaft f therein. The splints f on the broom F are formed of metal, preferably of steel, and are passed through the perforations f in the hollow shaft from oneto the other through the space f be tween the hollow shaft f and the wooden shaft f and are held together and against 70 displacement by bolts f passing through the shafts f5 and f. The splints f are placed through the perforations f at an angle as shown in Fig. 13, for a short distance from each end of the broom F in order to drive all the dirt or sweepings into the center of the broom F, so that they can be swept into the tank 0 and will not be liable to be thrown out to the side of the broom F.

Mounted around the axle A, on each side thereof, between the wheels B and the gearwheels h, are the clutches i, which are provided with engaging faces 1" thereon for engaging with engaging faces 2' on the gear-wheels h,

'and the clutchesi are providedvwith annularseats i on their exterior surfaces, with which projections 2' on the ends of crank-arms i secured to inclined shafts i, are adapted to engage for operating the clutches i. The two inclined shafts 1J extend upwardly toward the 0 rear of the sweeper and are supported in bearings' i secured on .each side of the casing E. An upwardly-extending arm i is secured on the end of one of the inclined shafts 1L, and

a downwardly-extending arm 2' is secured on 5 the end of the other inclined shaft i A bar 71 extends across the exterior of the casing E and connects the free ends of the arms 2' and t and a handle or lever i is secured on the arm 2' for convenience in operating the clutches 2'.

- Mounted in bearings j on a platform 7' in the rear of the sweeper and supported on the casing E is the shaft j, which is provided with the arms j secured at each end thereof, hav- 10 ing forked ends 3' for engaging with a rod 7' passing down on each side of the casing E and being pivotally mounted around a bar j, secured in each of the forked frames h The rods 7 are pivoted within the forked ends 7' on the arms j by means of the pivot-pins jl, mounted within the forked ends and secured within a sleeve j fitting around the rods The rods f are held in place within the sleeves j by means of a nut j", engaging [15 with the upper ends of the rods 9' and a spiral springj is secured around each of the rods between the sleeves j and a collar removably secured around each of said rods 3' Secured to the shaftj is the segmental 12o provided with a flanged portion Z therein, 1 0

having a seat Z therein for the reception of an angle-bar m, which is held therein by means'of bolts Z The angle-bars m extend out to the front of the sweeper and are re- An operating-wheel k is se- 12 5 casing E at any time.

movably secured by means of bolts m to a cross-bar a, located in front of the wheels B, said bolts m having handle-nuts m secured thereto. The bolts have elongated heads m thereon, working through slotted holes or in thecross-bar a. The cross-bar n is supported by means of braces n secured to the casing E and acts to have the tongue oi shafts 0 secured thereto for hauling the sweeper. A seat 19 for the operator-is secured on the end of a spring supporting-bar p, whichis connected to' the platform j in the rear of the sweeper, and a door q is hinged to the top of the casing E, over an opening q therein, for an examination of the tank or interior of the Rubber strips 1' are secured to the buckets D and bear against the tank 0, and rubber strips 5 are secured on the bucket-frames cl d to bear against the sides of the tank 0 to prevent the lodging of obstacles between the tank 0, buckets D, and

frames (l (1 during the revolution of the buckets D. If desired, slotted holes can be formed in the bars at at right angles to the slotted holes n in the cross-bar m for allowing play or movement of these parts.

The operation of my improved streetsweeper is asfollows: WVhen it is desired to use the machine to sweep and the broom F is lowered against the street-surface, the operator grasps the lever i and throws the same, to the right, which, through the bar t will turn the inclined shafts 2' and throw the clutches i into engagement with the gearwheels h on the axle A. As themachine is hauled the driving-wheels B will revolve and turn the gear-wheels h, which are meshing,

with the pinions h on the shafts h in the forked frames h and will act to turn sprocketwheels f on said shafts 7L2, and through the sprocket-chainsf,engaging with the sprocket wheelsf and the sprocket-wheels] on the shafts f of the broom F, will act to revolve; the broom F to sweep the dirt or other material onto the buckets D as they are revolved. By the movement of the gear-wheels 72 the gear-wheels it are revolved,and,meshing with the pinions 7L5 on the shafts h, will act to turn the pinions 7L8 on the shafts h, which, meshing with the gear-wheels 71,", will revolve the buckets D, secured to the bucket-frames (I; through the ratchet-wheels h being 0011- nected to the gear-wheels h by their pawls h, and the ratchet-wheels h being rigidly connected to the sleeves d on the frames (1. i As the buckets D are revolved over the tank 0, the dirt or other sweepings thrown up bythe broom F will be caught by the buckets D and deposited in the tank '0, through its opening 0 when the buckets D pass over the opening 0 of the tank 0.

WVhen the broom F is in operation, the sweepings will be insured to pass on to the buckets D by the apron g on the swinging door G, which comes in contact and drags on the street, so as to prevent the dirt or other sweepings from being thrown forward of the broom .F; \Vhen the tank 0 has been sufficiently filled with sweepings and it is desired to dump the same, all that is necessary is to grasp the rod g and pull the same back or rearward, which will turn the shaft g and through the levers g and lever will raise the door G, on account of its swinging frames g being pivoted around the rod 9 The handle-nuts m are then unscrewed sufficiently from the bolts m and the heads m 011 the bolts m turned so as to pass through the slots a in the cross-bar a, so releasing the angle-bars m from the cross-bar a, when the angle-bars m can be raised by the operators and the tank 0 turned backward, which will allow the dirt or sweepings to pass out of the tank 0 through the opening 0 therein and through the opening a in the casing E onto the street or dumping-place, as desired.

After the sweepings are removed fromthe tank 0 it can be returned to place by pulling down on the an- I gle-bars m and connecting them to cross-bar a by passing the headed bolts on through the slots n in the cross-bar n and screwing down the handle-nuts m against the bars m. The door G can then be returned to place over the opening 6 in the casing E by pushing forward the rod 9, which will allow the swinging frames g to swing back on the rod g through the levers g and gflbeing pivotswivel pivoted joint, are permitted torise with the forkedarms 7' and so raisethe broom F. The broom F can be lowered by reversing the operating-wheel 70 and with it the worm-wheel It on upright shaft 75 and gearwheel is on the shaft j, so lowering the forked arms j and rods and permitting the lowering of the broom F, connectedtl1ereto.

In case it is desired that the broom Foperate and sweep in turning corners, the outer ratchet-wheel h on the aXle A and the outer ratchet-wheel f on the broom F will revolve to operate the buckets D and broom F, while the inner ratchet-wheel h on the aXle A and the inner ratchet-wheelf on the broom F will revolve or turn backward, and their pawls h and f, respectively, will slip over the ratchetwheels in order to allow the gearing mechanism on the inner side of the sweeper to remain stationary, while the gearing mechanism on the outer side of the sweeper is operating the broom F and conveys bucketsD, so that the sweeper will relieve itself in turning corners or around either to the'right or left. It is evident that the gearing mechanisms shown at H and the ratchet mechanism on the broom F may be used on any form of sweeper for permitting the broom F to operate in turning corners or around without the use of the tank C, conveyer-buckets D, or the casing E.

tion, as well as to obtain speed and make the broom work easier, and by the gearing mechanism H being connected to the conveyerbuckets D it enables the conveyer to be driven evenly and obtain the speed desired.

It also enables the power to be directed on the horses evenly and to make the conveyer work true at all times.

It will thus be seen that my improved sweeperis cheap and simple in its construction and operation and that the broom will always operate to sweep in turning corners and will not necessitate the raising of the same in order to allow the machine to be hauled around corners. The broom can be rapidly and easily raisedat any and all times when desired without any great force exerted or application of strength. The sweepings will always be thrown into the buckets from the broom and will be carried thereby and deposited into the tank, and when the tank is filled it can be dumped quickly and easily and returned to place without any great strength or complicated mechanism. The broom can be easily and rapidly operated by the gearing mechanism, the parts will not get out of order, and the streets will be cleanly and evenly swept by the machine.

The machine is light, strong, and durable, and practical experience with it has proven it to be a useful and practical sweeper and one that will reduce the cost of labor, time, and expense in this kind of work.

Various modifications in the construction and design of the various parts of the machine may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

hat I claim as my invention, and desire to secure by Letters Patent, is+

1. In a street-sweeper, the combination of an axle,supporting and driving wheels loosely mounted around the axle, a casing supported around the axle, a tank or dirt-receptacle rigidly secured to the axle, a conveyer between the casin g and the tank carrying buckets thereon, a rotatable broom adjustably mounted in the rear of the axle, connections from the driving wheels to the rotatable broom, and gearing mechanism connected to the driving-wheels and to gear-Wheels loosely mounted around the axle and rigidly connected to the conveyer, substantially as and for the purposes set forth.

2. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a casing supported around the axle, a tank or dirt-receptacle rigidly secured to the axle, a conveyer between the casing and the tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle, connections from the driving wheels to the rotatable broom, gearing mechanism connected to the driving-wheels and adapted to operate gearwheels loosely mounted around the axle, and

ratchet-wheels having pawls engaging therewith connected to said gear-wheels and rigidly connected to the conveyer'or frame, substantially as and for the purposes set forth.

3. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a casing supported around the axle, a tank or dirt-receptacle rigidly secured to the axle, a conveyer between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle, connections from the driving-wheels to the rotatable broom,

gear-wheels connected to the driving-wheels and meshing with pinions mounted on shafts supported on said casing, pinions. on said shafts and meshing with gear-wheels loosely mounted around the axle, and ratchet-wheels having pawls engaging therewith connected to said last-named gear-Wheels and rigidly connected to the conveyer, substantially as and for the purposes set forth.

4. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a casing supported around the axle, a tank or dirt-receptacle rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of said axle, connections from the driving-wheels to the broom, a crossbar supported by and in front of said casing, and bars removably secured to said cross-bar and having collars thereon rigidly secured to the axle for dumping and holding the tank or dirt-receptacle in place, substantially as set forth.

5. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a casing supported around the axle, a tank or dirt-receptacle rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle, connections from the driving-wheels to the broom, a crossbar supported by and in front of said casing, bars removably secured to said cross-bar having collars thereon rigidly secured .to the axle, and bolts removably connected to the crossbars and bars for dumping and holding the tank or dirt-receptacle in place, substantially as set forth.

6. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a casin g supported around the axle, a tank or dirt-receptacle rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle, connections from the driving-wheels to the broom, a cross bar supported by and in front of said casing, bars removably secured to said cross-bar having collars thereon rigidly secured to the axle, slots in said cross-bars, and bolts removably connected to the cross-bars and bars having elongated heads thereon engaging the said slots in the cross-bars for dumping andhold ing the tank or dirt-receptacle in place, substantially as set forth.

7. In a street-sweeper, the combination of an axle, supporting and driving Wheels loosely mounted around the axle, a casing supported around the axle, a tank or dirt-receptacle rig: idly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle, connections from the driving-wheels to the broom, a crossbar supported by and in front of said casing, bars removablysecured to said cross-bar havin g collars thereon rigidly secured to the axle, bolts removably connected to the cross-bar and bars having elongated heads thereon engaging with said slots in the cross-bar, and wrench-nuts engaging the said bolts for dum pin g and holding the tank or dirt-receptacle in place, substantially as set forth.

S. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a rotatable broom mounted in the rear of the axle, connections from the driving-Wheels to the broom, and

adjustable spring-rods secured to the said rotatable broom and pivotally swiveled in sleeves pivoted in arms secured to a shaft supported above the rotatable broom, sub-- stantially as set forth.

9. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a rotatable broom mounted in the rear of the axle, connections from the driving-wheels to the broom, adjustable spring-rods secured to said broom and pivotally swiveled in arms secured to a shaft supported above the broom, and a worm gear-wheel on said shaft meshing with a worm on an upright shaft having an operating-wheel thereon for raising and lowering the broom, substantially as set forth.

' 10. In a street-sweeper, the combination of an axle,supporting and driving wheels loosely mounted around the axle, a casing supported around the axle and provided with an opening in the bottom thereof, a tank or dirt-receptacle rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adjustably mounted in the rear of the axle, connections from the driving-wheels to the broom, means on said axle for dumping and holding the tank in place, and a removable door pivoted to said casing and fitting over .around the axle and provided with an opening in the bottom thereof, a tank or dirt-receptaole rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle, connections from the driving-wheels to the broom, means on said axle for dumping and holding the tank in place, a removable door pivoted to said casing and fitting over the opening'in the bottom of the casing to allow the tank to be emptied, and means connected to said door for raising and lowering the same, substantially as set forth.

12. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle, a casing supported around the axle and provided with an opening in the bottom thereof, a tank or dirt-receptacle rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of the axle,

connections from the driving-wheels to the a broom, means on said axle for dumping and holding the tank in place, a removable door pivoted to said casing and fitting over the opening in the bottom of the casing to allow the tank to be emptied, and a series of lovers pivoted to the door and casing for raising and lowering the door, substantially as set forth.

13. In a street-sweeper, the combination of an axle, supporting and driving wheels loosely mounted around the axle and provided with an opening in the bottom thereof, a tank or dirt-receptacle rigidly secured to said axle, a conveyer-frame between the casing and tank carrying buckets thereon, a rotatable broom adj ustably mounted in the rear of said axle, connections from the driving-wheels to the broom, means on said axle for dumping and holding the tankin place, a removable door pivoted to said casing and fitting over the opening in the bottom of the casing to allow the tank to be emptied, and a flexible apron secured to the rear end of said removable, door to direct the sweepings into the buckets, substantially as set forth.

In testimony whereof I, the said WILLIAM FRANZ, have hereunto-set my hand.

WILLIAM FRANZ.

ICC

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