US1089356A - Asphalt-chopping machine. - Google Patents

Description

C. E. BATHRIGK.

ASPHALT GHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911. 1,089,356, Patented Mar. 3, 191 1.

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G. E. BATHRIOK.

ASPHALT OHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911.

1,089,356, Patented Maw, 1914.

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C. E. BATHRIGK. Y ASPHALT GHOPPING MACHINE.

APYLIOATION FILED MAY 25, 1911.

Patented Mar. 3,1914.

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COLUMBIA PLANOORAPH co..WAsHlNuToN. n. cv

O. E. BATHRIGK.

ASPHALT GHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911.

Patented Mar. 3, 1914.

5 SHEETS-SHEET 4.

O. E. BATHRIOK.

ASPHALT CHOPPING MACHINE.

APPLICATION FILED MAY 25, 1911.

1,089,356, Patented Mar. 3, 1914.

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CHARLES E. BATHRICK, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREBERICK C. AUSTlN, OF CHICAGO, ILLINOIS.

ASPHALT-SHOPPING MACHINE.

Specification of Letters Patent.

Patented Mar. 3, twi l.

Application filed May 25, 1911. Serial No. 629,385.

To all whom it may concern Be it known that I, CnAnLns E. Ba'rnnron, a citizen of the United States, residing at Chicago, county of Cook, and State of illinois, have invented a new and useful improvement in r-rsphalt-Chopping Machines, oi which the "following is a specification.

The object of my invention is to provide a machine for chopping asphalt or like pavement, characterized by various features of novelty.

Viewed in one aspect my invention, broadly stated, comprises a plurality of choppers mounted to reciprocate in clownwardly converging paths.

Viewed in another aspect my invention comprises operative connections between the engine-driven. power shaft and the choppers.

Considered in another aspect my invention comprises readily-controlled means whereby the operator may throw the choppers into inoperative position.

These and other features of novelty will. be understood from a detailed description of the accompanying drawings, in which Figure 1 is a view in side elevation of a chopping machine embodying the various features of my invention; Fig. 2 is a front view of the machine; Fig. 3 is a view taken on the cross-section line 33 of Fig. 1, look ing in the direction indicated by the arrows; Fig. 4 is a plan view of the machine; Fig. 5 is a detailed view in elevation showing one of the choppers and the supporting member, together with a portion of the operative connections between the choppers and the power shaft; Fig. 6 is a view in crossscc-- tion taken on line 66 of Fig. 5, looking in the direction indicated by the arrows; Fig. 7 is a cross sectional view taken on line 77 of Fig. 5, looking in the direction indicated by the arrows, and Fig. 8 is a perspective view of a chopping knife.

The operative parts of the machine are mounted on a truck or carriage having a framework indicated as a whole by 1. The truck is mounted on a pair of rear supporting wheels 2 and a front caster wheel 3 which is centrally disposed with respect to the frame and is pivoted thereto. From the rear of the truck frame 1 rises the bar 4 which is provided with a handle 5. A pair of brace rods 6 are at one end secured to the bar 4 and at the other end to the upright angle irons 7 for rigidly holding the bar 1 in position. By grasping the handle bar 5 the operator may move the machine from place to place. The upright angle irons 7 are at their lower ends firmly riveted to the horizontal frame 1. The irame 1 is provided with apair of depending brackets 8. A pair of channeled guide members 9 are secured to the uprights 7 and the brackets 8 upon opposite sides of the machine in a downwardly converging position. Each guide member is provided with a pair of perforated lugs 10 and 11, as best shown in Fig. 1. A bolt or rivet 12 passes through the lug 10 and the adjacent upright 7, and a bolt or rivet 13 passes through the lug 11 and the associated bracket 8. By this means the guide members are rigidly held in proper position on the machine.

its best shown in. Figs. t and 5, each guide member has formed thereon a channel or groove 15 in which is adapted to slide a chopping member indicated as awhole by 16. As best shown in the perspective view in Fig. 8, each chopping member consists of a supporting plate 17 provided at its upper end with a perforated lug 18. r'it its lower end the supporting plate 1? provided with a perforated lug 19 in alinement with the lug 1.8 and also with the extension 20. As best shown in Fig. 3. the extension 20 is oliiset from the body of the plate 1'? so that when the chop iiing or cutting knife 21 is screwed or riveted to the extension 20, he rear surfaces of the supporting plate 17 and the chopping kniile will be in alinement. Through the lugs 18 and 19 of each chopper passes a rod which. near its center hashigidly connected thereto an arm 5 A pair of stout compression springs 2 1 are coiled about each oi? the rods 22 between the arm 23 and the lugs 18 and 19. W hen the chopping members 16 are in place on. their respective guide members 9, the supporting plate 17 rests in the groove or channel 15 while the extension 20 slides in the slot 15 of the guide member. In this way the chopping members are securely and firmly mounted on the guide members and are at the same time free to reciprocate thereon. The outer end of each arm 23 terminates in a bearing portion on which is pivoted a link 26. To the upper end of the links 26 are pivoted the crank arms 27. Each crank arm 2'? is rigidly connected to one end of the stub shaft 28 urnaled in a sleeve or bearing member 29. To the free ends of the shafts 23 are lined the sprockets 30. The sleeves or bearing members 29 are connected to the lower ends of the arms 31 provided with perforated lugs 31 to which are pivoted the fork-shaped connecting members 3:2. As seen from Figs. 1 and 3, the connecting memers 32 are each provided with two pairs of bifurcations extending at right angles to each other. To the upper bifurcations are pivoted the links .t their upper ends the links 33 are pivoted to the. connecting pieces 3% which are similar to the connecting members 32 in that they are provided with two pairs of bifurcations extending at right angles to each other. To the upper bifurcations of the con .ecting pieces 34 are pivoted the front ends of the arms 35.

As shown in Figs. 3 and a, the arms 35 are fixed to the ends of the transverse shaft 36 which is journaled in bearings 37 mounted upon the forwardly converging angle bars 33. The arrangement of the angle bars 38 is perhaps best shown in Fig. a. At their rear ends the converging angle bars 38 are secured to the upper ends of the uprights 7. A pair of upwardly converging bars 39 are secured at their lower ends to the front of the truck frame 1, as shown in Fig. 2. An angle plate L0 connects the upper ends of the bars 39 together and also connects the front ends of the forwardly converging bars 3 It will thus be seen that the bars 7, 3S and 39 constitute a rigid upright framework for supporting various parts of the machine. The transverse shaft 36 has rigidly connected thereto the arm n to the upper end of which is pivoted one end of the connecting link or red T2. The other end of the connecting rod a2 is pivoted at T3 to the hand lever li. The bar t has fixed thereto the collar as provided with a lug L6 to which is pivoted the hand lever dd by i leans of the pin 47. As shown in Fig. i, the pin l7 projects at both ends through the lug 4-6. To one end of the pin 47 is pivoted the hand lever ed and to the other end is connected the arm as. At its upper end the arm 43 is provided with a pin 4C9. An arc-shaped sector 50 is at one end connected to the bar t and at the other end to th pin 49. To the lever n is pivoted the dog 51, the free end of which is adapted to engage the teeth 52 on the sector 50. Near the upper end of the hand lever l is pivoted the bell-crank 53. G11 the pin or lug 5d of the bell-crank 53 is pivoted the upper end of the connecting rod 55, the lower end of which is pivoted to the dog 51 at 56. A coil spring 57 which surrounds the upper portion of the link 55 bears at its lower end against the lug 58 which is provided on the hand lever A, and through which the link 55 passes. i t its upper end the coil spring 57 bears against the head of the link 55 to normally hold the link in an elevated position and cause the dog 51 to engage the teeth of the sector.

A bearing member 59 is secured to the horizontal bars 38 near the front ends thereof. A pair of plates 60 is secured to the bars 38 near the rear ends thereof, as best shown in Fig. l. The plates 60 are connected together by the angle bar 61 to the lower surface of which is secured the bearing member 62. The bearing members 5-9 and 62 are in longitudinal alinement with each other and are mounted substantially central of the machine for rotatably supporting the shaft 63. The upper ends of the arms 31 terminate in sleeve portions 64 which are rotatably mounted on the central shaft 63. A pair of sprocket wheels 65 are fixed upon the shaft 63 and are operatively connected to the sprocket wheels 30 through the sprocket chains 66. The rear end of the shaft 63 has fixed thereto the sprocket wheel 67 which is connected to the sprocket 68 by the sprocket chain 69. The pinion 68 is mounted on the power shaft 70 of the engine, indicated as a whole by E. Any suitable form or kind of en 'ine may be used. For the sake of illustration T have shown the engine E in the drawings as a gas engine. The fly-wheel of the engine is indicated by the reference numeral 71.

From the above detailed description of the construction of the embodiment illustrated in the drawings, the operation of my machine will be understood. Power is transmitted from the engine shaft 70 to the upper shaft 63 through the sprocket chain or similar connection 69. The rotation of the shaft 63 is transmitted to the pair of crank shafts 28 through the sprocket wheels 65, the sprocket chains 66 and the sprocket wheels 30. Rotation of the crank shaft 28 causes rotation of the crank arms 27. The connecting links 26 convert the rotary motion of the crank arms 27 into a sliding or reciprocat-ory motion of the chopping members 16. The angular arrangement of the crank arms 27 is such that when one of the chopping members is in its lowermost or operative position, the other chopping mem- 361 is in a raised position above the pavement which is being chopped up. In this way the chopping members reciprocate back and forth in downwardly converging paths. As a result of this movement of the chopping members a substantially i-shaped hole is chopped in the asphalt, indicated at 72 in Figs. 2 and 3.

During the transportation of the achine from one place to another, the choppers are lifted into inoperative position by means of the hand lever C te. When the operator JOVES the hand l ver rearwardly, the arms 35 are rocked upwardly, thereby raising the arms 31 through the connections previously described. The elevation of the arms 31 raises the sleeves or hearing members 29 in which the crank shafts 28 are journaled. The raising of the bearing members 29 raises the normal position of the chopping members 16. Consequently, with the sleeves or bearing members 29 in elevated position, reciprocation of the chopping members does not bring them into contact with the pavement to be repaired or with the roadway over which the machine is being transported. When the arms are thus moved to inoperative position, it is not necessary to stop the engine, because the lowermost position of the arms will under these circumstances be above the level of the pavement.

By means of the above described connections between the hand lever a l and the bearing member 29 for the crank shafts 28, the choppers may not only be moved from operative to inoperative position and vice versa, but the limit of the downward stroke of the choppers may be adjusted. In some instances it may not be necessary to cut as deeply into the asphalt as in others. By moving the hand lever n rearwardly the proper number of notches, the downward stroke of the choppers may be adjusted to the desired limit. The hand lever le is held in any one of its actuated positions by the dog 51 engaging the teeth of the sectors To release the dog from the sector the operator simply presses the upper arm of the bell-crank 53 toward the handle of the lever 44, whereby the connecting link is lowered and the dog 51 rocked away from the teeth of the sector.

I do not herein claim broadly the arrangement in an asphalt chopping machine of choppers moving in downwardly converging paths, since this feature is broadly claimed in my co-pending application, Serial Number 515,296, filed August 80, 1909.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage having an upright framework mounted thereon, a power shaft journaled longitudinally on said framework, a pair of downwardly converging arms pivoted to swing on an axis coincident with the axis of said p0 er shaft, a crank shaft supported at the lower end of each arm, connections between said power shaft and said crank shafts, a pair of slidable choppers operatively connected with said crank shafts, means for vertically adjusting said arms to vary the limit of the downward stroke of said arms, and guiding means for said choppers.

2. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage having an upright framework mounted thereon, a power shaft journaled longitudinally on said framework, a pair of downwardly diverging arms pivoted to swing on an axis coincident with the axis of said power shaft, a crank shaft supported at the lower end of each arm, driving connections between said power shaft and said crank shafts, a pair of slidable choppers operatively connected with said crank shafts, means for vertically adjusting said arms to vary the limit of the down-stroke of said arms, and a pair of downwardly converging guides in which said choppers operate.

3. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage having an upright framework mounted thereon, a power shaft journaled longitudinally on ad framework, a pair of downwardly diverging arms pivoted to swing on an axis coincident with the axis of said power shaft, a crank shaft supported at the lower end of each arm, driving connections between said power shaft and said crank shafts, a pair of choppers operatively posite directions, and a pair of downwardly converging guides in which said choppers operate.

a. In a machine for chopping asphalt or like pavement, the combination of a pair of downwardly diverging arms pivotally connected together at one end, a crank shaft journaled at the other end of each arm, a chopper adapted to be operated by each crank shaft, and means for simultaneously raising said arms to hold the choppers out of operative position.

5. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage, a pair of downwardly converging guide members fixed upon said truck, a chopper adapted to slide in each of said guide members, a pair of downwardly d1- verging arms supported on said truck, a crank shaft journaled in the lower end of each arm, and operative connections between said crank shafts and said choppers for sliding the latter alternately in opposite directions.

6. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage, a pair of downwardly converging guide members fixed upon said truclna chopper adapted to slide in each of said guide members, a pair of downwardly diverging arms supported on said truck, a crank shaft journaled in the lower end of each arm, operative connections between said crank shafts and said choppers for sliding the latter alternately in opposite directions,

and means for adjusting said arms to vary the limit of the down-stroke of said choppers.

7. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage provided with a pair of bearings oispcsed on opposite sides of the longitudinal center of said truck, a crank shaft journaled in each bearing, a slidable chopper operatirely connected with each crank shaft, and means for vertically adjusting said bearings to vary the limit of the down-stroke of said choppers.

8. In a machine for chopping asphalt or like pavement, the combination of a truck or carriage having a power shaft mounted longitudinally thereon in a plane passing sub stantially through the center of the truck, a pair of crank shafts supported on either side of said power shaft, a driving connection between said power shaft and each of said crank shafts, a chopper adapted to be Operated by each crank arm, and yieldable connections between said crank shafts and said choppers.

9. in machine for chopping asphalt or like pavement, the combination with a plurality of choppers, each comprising a cutting blade, a plate to which the blade is rigidly secured, a pair of perforated lugs on said plate, of aplurality of slotted guide members with which said plates are adapted to be slidably connected, a rod passing through the lugs of each plate, a laterally extending arm secured to said rod at a point substantially midway between said lugs, a pair of springs encircling each rod between the arm and the lugs thereon, a power shaft, and driving connections between said power shaft and said rods for reciprocating the latter to operate the choppers.

10. in a machine for chopping asphalt or like pavement, the combination with a plurality of choppers, each comprising a cutting blade, a plate to which the blade is rigidly secured, a pair of perforated lugs on said plate, of a plurality of slotted guide members with which said plates are adapted to be slidably connected, said guide members being arranged to converge downwardly, a rod passing through the lugs of each plate, a laterally extending arm secured to said rod at a point substantially midway between said lugs, a pair of springs encircling each rod between the arm and the lugs thereon, a power shaft, and driving connections between said power shaft and said rods for reciprocating the latter to operate the chop pers.

11. in a machine for chopping asphalt or like pavement, the combination of a frame, a pair of choppers slidably mounted in said frame, a power shaft mounted longitudinally in said frame and between said choppers, a pair of crank shafts supported on either side of said power shaft, and driving connections between said power shaft and each of said crank shafts for actuating said choppers.

12. In a machine for chopping asphalt or like pavement, the combination of a frame, a pair of downwardly converging guide members securely mounted in said frame, a chopper slidably mounted in each of said guide members, a power shaft journaled longitudinally in said frame, a crank shaft supported on either side of said power shaft and connected with each of said choppers and driving connections between said power shaft and each of said crank shafts for actuatin said choppers.

13. in a machine for chopping asphalt or like pavement, the combination of a frame, a pair of choppers mounted in said frame, said choppers being mounted to slide in downwardly converging aaths, a power shaft journaled longitudinally in said frame, a crank shaft journaled on either side of said power shaft and connecting with said choppers, and driving connections between said power shaft and said crank shafts for actuating said choppers.

H. In a machine for chopping asphalt or like pavement, the combination of a frame, a pair of choppers mounted to slide in downwardly converging paths, means for operat ing said choppers, and readily controllable means for adjusting the limit of the downward stroke of said choppers, said means comprising a transverse shaft mounted on said frame, and provided with an arm at either end having pivotal connections with said choppers, and a lever having operative connections with said shaft for rotating the same.

15. in a machine for chopping asphalt or like pavement. the combination of a frame, plurality of guide members mounted in said frame, a chopper slidably mounted in each of said guide members, a rod slidably mounted on each of said choppers, a crank shaft rigidly connected to each rod substantially in their centers, a compression spring coiled about each rod on either side of said connections and means connecting with said crank shaft for operating said choppers.

In witness wiiereof, l have hereunto subscribed my name this 28d day of December, A. D. 1910.

CEILRLES E. BATHRIGK. vfitnesses A. A. THOMAS, Geo. Maurine.

Copies of this patent may be obtained for five cents each, by addressing the Qomznisslener Patents,

Washington, 3. G.

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