US719492A - Street-sweeping device. - Google Patents

Description

No. 719,492. PATENTED FEB. 3, 1903.

I. A. MOOORMAGK'. STREET SWEEPING DEVICE.

APPLICATION FILED JULY 1, 1901.

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I. A. MQGORMAGK. STREET SWEEPING DEVICE.

APPLICATION FILED JULY 1, 1901. N0 MODEL. 4 SHEETS-SHEET 2.

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PATENTED FEB. 3, 1903.

I. A. MQUORMAGK.

STREET SWEEPING DEVICE. APPLICATION FILED JULY 1, 1901.

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I. A. MOGORMAGK. STREET SWEEPING DEVICE.

APPLICATION FILED JULY 1, 1901.

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IBA'A. MCOORMAQK, OF CLEVELAND, OHIO.

STREET-SW EEPING DE VICE.

SPECIFICATION forming part of Letters Patent No. 719,492, dated February 3, 1963.

Application filed July 1, 1901.

To all whom it may concern:

Be it known that I, IRA A. MCCORMACK, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a certain new and use ful Improvement in Street-Sweeping Devices,

of which the following is a specification, the principle of the invention being herein e2:- plained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention relates to devices for sweep ing streets, its particular object being to provide a structure adapted to be operated over an' glectrically-operated surface street railroa Said invention consists of means hereinafter fully described, and specifically set forth in the claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings, Figure I represents a side elevation of an electrically-propelled motor-car embodying in its structure my street-cleaning invention. Fig. II represents a rear end elevation of same. Fig. III represents a horizontal section of such car, illustrating a plan of the location of various elements of my invention. Fig. IV represents an enlarged detail perspective view of a traveling carriage employed in said structure. Fig. V represents an enlarged broken detail endelevation of the means for effecting a pivotal movement of the main or primary broom of the sweeping device. Fig. VI

represents, on the same scale, a side elevation of the parts illustrated in Fig. V. Fig. VIIv represents a detail view of the meansfor raising and lowering said main or primary broom. Fig. VIII represents an enlarged detail elevational view of the mechanism intermediate of the broom-operating motor and the broomshaft, showing a sectional portion of the broom in addition. Fig. IX represents a diagrammatic plan view of a motor-car, illustrating the principle of construction of a form of my invention. Fig; X

Serial No. 66.699. (R0 model) top of the mast, which forms a support for the'outer broom end. Fig. XI represents a detail view of the rack-segment and connected parts used in my invention.

' Hung in hangers suitably secured-to the bottom of the rear portion of the motor-carA is a rock-shaft A, Fig. VIII, upon which are secured two rocker-arms a a and an operating-arm a. Secured to the outer ends of said rocker-arms is a cross-bar a, from two different points of which depend two links B, to whose lower ends are secured, respectively, two journal-bearings b b, in which is journaled a driving-shaft C. Intermediately of said bearings is secured upon said shaft a sprocket-wheel C, which is driven by means of a sprocket-chain c, which in turn is driven by a sprocket-wheel mounted upon the shaft of a driving motor D, which is angularly mounted upon the floor of the car. To the outer end (right-hand end as illustrated in Fig. VIII) is secured, through the medium of a universal joint 0 the inner end of the broomspindle E, which extends outwardly from beneath the'car body, as shown, and is supported and operated in a manner hereinafter fully described. Two guides F F, preferably'constructed of round steel rod, are secured to the bottom of the car-body and are bent upon the arc of a circle, Fig. I, having its center upon the line of axis of the rock-shaft A. These guides pass through two eyes a formed in lugs a suitably mounted upon the drivingshaft, as shown in Fig. VIII. These guides serve to prevent lateral displacement of the above-described mechanism in the upward or downward movement thereof attending the oscillation of the rock-shaft A. From a third point in said bar a Fig. VIII, depends alink of, secured to a journal-bearing I mounted upon the inner end of the broom-spindle. As will be readily understood from the abovedescribedconstruction, the inner end of the broom-spindle, and hence the broom, may be raised and lowered by oscillating the shaft A. Such oscillation is effected by means of an operating-lever G, connected with the arms a through the medium of a link g, the positionof such lever being capable of variable determination by means of a stand G, provided with a central slot and a series of trans-' versely-located holes g anda removable pin each broom end may be raised when vibrated by the movement of the broom coinciding substantially with the end of the Fig. VII. The outer end of the broomspindle is journaled in the end of a yokeframe E, and upon the outer end thereof is iournaled the end of asupporting-rod 71 ,the opposite extremity of which is secured to the end of a flexible chain 71., which runs over apulley h ,rotatably mounted,preferablyby means of antifriction-bearing, Fig. X, upon the top of a hollow stationary mast II, secured to the car-floor and passing through the car-roof.- The other extremity of such chain is secured to an operating-lever I'I, fulcrumed upon a standard h" and passing through a slot 7%, formed in the lower mast portion, Fig. II. The position of said lever,and hence the outer broom end, is also capable of variable determination through the medium of a stand b and removable pin similar to that previously described. Where conditions are such as to limit the distance of projection of the mast above the car and such limitation causes the chain to contact the contiguous roof edge, a running carriage I1 having a roller over which the chain is caused to pass, is provided, a track being suitably secured to the car-roof and forming a runway for said carriage. Such construction facilitates the movement of the pivotal broom hereinafter described. It is hence seen that the broom is capable of being simultaneously rotated, angularly or pivotally moved in a horizontal plane, and raised and lowered, and that the bloom-spindle extremities are capable ofbeingsimu'ltaneously raised or lowered orraised'orlowered independently of each other. By employing, such above-described construction, wherein orlowerindependently of each other, the broom may be caused to incline downwardly from its inner to its outer end orinclined downwardly from its outer toward its inner end or made to assume a perfectly horizontal position, as may be requiredby varying conditions or as may tion of the broom as desired,

be required by a non-uniform wearing of the broom-bristles. The broom is divided into two sections, as shown, the line of division At such point the spindle is journaled in the inner end of the yoke-frame E, and secured to said end is a segmental rack-bar J, which is downwardly and inwardly bent, as shown in Fig. XI, such inwardly-bentform being adopted in order to permitof the required range of pivotal movement of the broom in car.

an inward direction, as will further appear. An antifriction-bearing consisting of two rollers k is secured to the rearend of the car, Figs.'V and VI, preferably to the hanger a, which is provided for forming a bearing for the lower end of a shaft Z, hereinafter described. Said bearing is provided for receiving the rearward thrusts of the segment J over the pavement. A second bearing consisting of two rollers 7c is is provided and similarly mountedv for receiving the down-.

ward thrusts of such segment when so Vi'l brated. The rack-teeth are formed upon the inner or concave side of the rack-bar and mesh with an operating-pinion L, secured to the lower end of an upright shaft Z, provided with a hand-wheel Z, having its lower end journaled in said hanger a and its upper end journaled in a bearing (1*, supported by braces a a, secured to the car. It is hence seen that the angular movement of the broom may be effected by turning the hand-wheel Z, and it is further seen that by reason of the abovedescribed inwardly-curved construction of the rack-bar the broom may be brought into a position parallel with the car when it is so desired. For supporting the free end of the rack-bar during such described position of the broom an elongated roller A Figs. II and III, is provided and suitably secured to the rear car portion, as shown. In order to lock the rack-bar at various points in the path of its movement and then fix the angular posi- I provide a fork M, whose tines are capable of insertion in spaces between the rack-teeth and which may be raised or lowered, and hence rendered operative or inoperative, as desired. A pedal m is connected with the stem of the fork for facilitating such operation.

The above-described broom is swung out angularly into the position illustrated in Fig. III during its operation upon the street to be. cleaned, the degree of angularity depending upon the width of that part of such street upon the right-hand side of the track, and may be swung in behind the car during the movement of the latter to avoid obstructions or for the purpose of adjustment according to the width of said street portion.- The driving-motorD is connected so as to be operable independently of the'bar-propelling motor or the car-wheels, whereby, it is seen, the broom and car may be operated at independently of each other, a characteristic which permits of great economy of operation, since the broom may be given a speed, best adapted to a given rate of speed of the car and to varying working conditions determined by the particular character of the work to be done in order to secure'greatest efiiciency.

Secured beneath the forward end of the motorcar is an auxiliary angularlyfixed broom N, which extends laterally in a direction opposite to that in which the primary broom extends and is utilized for sweeping that portion of the street to the right of a line midway between the two tracks of a doubletracked road, which is not traversed by the primary broom. The inner extremity of the space swept by the auxiliary broom is caused to overlap that of the space swept by the primary broom, so as to insure the'proper sweeping of every portion of the street traversed by the brooms. The said auxiliary broom is also driven by the motor D and preferably from the shaft end opposite that from which the primarybroom is driven.

any desiredspeed A hood 0 is secured to the front of the yoke-frame Ej and overhangs the front of the outer portion of the broom, and a hinged wing O is provided, Fig. III, from which a canvas dust-regulator apron is depended in front of that portion of the inner part of the broom ductor 10, secured to the-supporting-rod h, as

shown in Fig. II. These lamps serve to warn occupants of the street of the approach of the device at night-time.

In the modified form of device illustrated in FigrIX the use of the segmental rack is dispensed with for efiecting the angular movement of the main broom, and for it I substitute a gear Q, to which is secured an arm q, whose extremity is connected with a liuk-arinq, journaled at a suitable point to the said broom. The pinion L meshes with said gear, whereby, itis seen, the operation of the hand-wheel will effect, as before, the angul'ar movement of the broom.

Other modes of applying the principle of my invention maybe employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any one of the following,

claims or the equivalent of such stated means be employed. I Y o a I therefore particularly point out and distinctlyclaim as my invention- 1. In a street-sweeping device, the cornbination of a'vehicle, a broom pivotally and rotatively mounted thereon, means for impartmg angular, means for imparting'rotative movement to, and means for raisingand lowering the ends of the broom independently;

dependently of each other.

3. In a street-sweeping device, the combination of a vehicle, a broom pivotally and rotatively mounted and supported at both ends thereon, means for imparting angular, means for impartingrotative movement'to and means for positively raising and lowering said broom, such means for imparting angu- T operate simultaneously. 6o

nation of a vehicle, a rotary broom having one lar and rotative movement'being adapted to 4. In. a-stree't-sweeping device, the combiend of its shaft mounted upon said vehicle in a manner such as to rendersuch shaft simultaneously rotatable, angularly movable,'and capable of being raised and lowered, a gearsegment secured to said shaft,a pinion mounted upon said vehicle meshing with said segment whereby such angular movement may be effected, and levers supported upon said vehicle and connected with the ends respectively of said shaft whereby the raising and lowering of the latter may be efiected.

5. In a street-sweeping device, the combination ofa vehicle, a broom pivotally mounted upon the latter, an upright hollow mast secured to same, and a flexible connection secured to the outer. broom end supported on the top of, passing through the inside and secured below the top of said mast.

, 6. In a street-sweeping device, the combination of a vehicle,-a broom pivotally mounted upon the latter, an upright mast secured thereto and provided at its top with a sheave mounted upon a rotatable support, a flexible connection supporting at one end the outer broom end, passing over said sheave, a lever suitably mounted on said vehicle, the other end of said connection secured to said lever, and means for securing the latter.

7. In a street-sweeping device, the combination of a vehicle, a driving-shaft mounted thereon, a broom-spindle having its inner end secured to said shaft by means of a universal joint, the outer shaft end being suspended by means secured to the vehicle, and means connected with said shaft for raising and lowering same, whereby the inner broom end may be raised and lowered.

8. In a street-sweeping device, the combination of a vehicle, a rock-shaft secured to the bottom of the latter; arms secured to said shaft, a driving-shaft jonrnaled in said arms, a broomhaving one end secured to said shaft by, .rneansof a universal joint, means for rotating said driving-shaft, and means for os-- cillating said rock-shaft.

'9. Ina street-sweeping device, nation of a vehicle, a rock-shaft secured to the bottom of the latter; arms secured to said shaft, a driving-shaftjonrnaled in said arms, a broom having one end secured to said shaft by means of a universal joint, means for'ro- 'tating said driving-shaft, and means 'for oseillating said rock-shaft, guide-rods secured to. said vehicle-bottom,"and guide-bearings mounted upon said driving-shaft for engaging said rods. f Signed by me this 29th day of June, 1901.

IRA A. MGOORMACK. iAttest:

A. F. INGERSOLL, M. B. EXCELL.

the combi-

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