US1773431A - Road-making machine - Google Patents

Description

Aug. 19, 1930. J. H. MOSEL 1,773,431

ROAD MAKING MACHINE Filed Oct. 10, 1928 Patented Aug. 19, 1930 UNITED STATES PATENT OFFICE JOSEPH H. MOSEL, OF LAKEWOOD, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE JAEGER MACHINE COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF 0310 ROAD-MAKING MACHINE Application filed 0mmm, 1928. Serial N'o. 311,615.

This invention relates to a road-making machine, being more articularly directed to that type of road-ma ing machine known as a screed.

, The'screed or screeding machine customarily follows the concrete mixer the machine being adapted to move forwardly by means of traction wheels traveling on the forms defining the roadway, while the screed beam reciprocates transversely of the roadway so as to s read or strike off the concrete deposited between the forms by the mixer. When the screed is operating upon one of the lower courses of concrete, such as, for example, the first course, the screed cutting blades are necessarily arranged below the level of the top of the forms, with the result that as the screed beam reciprocates, aportion of the concrete becomes banked or packed between the end of the blades and the forms, so that the operation of the screed is retarded or, as happens in many instances, the forms are pushed out of position by the pressure exerted thereon by the packed or banked concrete The principal object of the present invention is to provide an attachment for the type of machine specified which ma be easily positioned when the screed is wor 'ng on one of the lower courses of the roadway to prevent the concrete becoming packed orbanked between the ends of the cutting blades and the forms, and which may be moved to an inoperative position when the screed is operating upon the top course.

Another object is to provide an attachment of the character referred to which may be easily assembled or disassembled with respect to the screed or screeding machine, and which is simple in construction, efficient in operation and capable of economic manufacture.

Additional objects and advantages will become apparent as the description of the invention progresses.

An embodiment of the invention is illustrated in the accompanying drawing wherein:

Fig. 1 is a fragmentary perspective view of a screed or screeding machine with the attachment assembled thereon and positioned in the operative position while the screed is operating upon one of the lower courses of concrete; and

Fig. 2 is a fragmentary top plan view of such a machine with the attachment assembled thereon and arranged in the operative position.

Since the construction of the screed or screeding machine does not form a part of this invention, except in so far as it cooperates with the attachment, only sufl'icient details of the machine will be shown and described herein to enable the invention to be fully understood.

A portion of a screed or screeding machine including the longitudinally extending chan; nel bars l'connected together adjacent the front end of the machine by a transversely extending channel bar 2 together with the vertically extending angle member 3 secured to both channel bars at their junction is shown in Figs. 1 and 2' the front traction wheels 4 of the machine being also indicated in Fig. 2. As already stated, the remainder of the machine, particularly the operating mechanism therefor, is not disclosed since its constructionis well understood in the art, and

also because the attachment comprising the understood that these forms may consist in either temporary members, or they may be in the nature of permanent curbings. The

screed beam 6 is supported upon the front end of the machine so as to be capable of being raised vertically by means of an operating chain 7 connected to a crank arm fitting 8, which fitting in turn is fixedly secured to a transversely extending shaft 9 rotatably mounted in angle brackets 10 arranged upon the forward ends of the opposite longitudinally extending channel bars 1. Suitable operating means, not shown, are connected to the shaft 9 whereby the operator may raise and lower the screed, as desired. The screed beam is further arranged to be reciprocated transversely of the road by suitable mechanism, such beam being of a length which will allow it to slide during its reciprocation upon the top of. the forms. The beam 6 is also provided adjacent each of its oppo site ends with bafile members 11 secured to the end shoes 12 of the screed beam, which ba-fiie members are for the purpose ofreventing the concrete from being pushe by the screed outside of the forms when the machine is strikingofi the top course of the roadwa Conventional cutter blades '13 are adjustably secured to thescreed beam by means of bolts 14passing through vertically extending slots 15 and engaging in the beam,

such mounting being for the purpose of allowin the cutter blades to be suitably positionef adjacent the lower edge of the beam so that they may engage the lower courses of the concrete. When the screed is operating upon one ofthe lower courses of the v concrete, these blades .have their lower por- 1 tions beneath the top level of the forms and when in this position they causethe concrete form of a goose neck, is pivotally connected to the frame of the machine b a pivot 17 extending throu h the base of t e bar and a reinforcing bloc arranged within the channel, and secured to the angle bar 3 and the channel member 1. It should be understood that a goose neck 16 is secured to each side of the machine. The channel 16 is of such a length that it extends forwardly from the frame of the machine over and beyond the screed beam and then downwardly to a point approximately in the same plane as the bottom edge of the beam. This downwardly extending ortion'has a pair of spaced angle members 15 and 19 secured to the base of the channel so that an arm of each angle member projects inwardly of the roadway, thus providing verticall s aced parallel bearings for a pintle 20 w ic passes through centrally-arranged openings in the arms so as to rotate therein, and which is prevented from dropping out of the openings by means of a cotter pin 21 passing through the pintle above the bracket 18. The pintle rod 20 extends below the lower angle bracket 19 and is fixedly secured in a socket boss 22 arranged upon the horizontally extending arm 23 of an angle bar 24. The arm 23 is provided adjacent its opposite ends with vertically extending pins 25 upon which are rotatably arranged rollers 25. Bolts are passed through .ber 27 adjacent t .and secured in the vertically disposed arm he plate rectangular. in

on its forward vertical edge adjacent the bottom thereof with a forwardly extending inwardly curved lug portion 29. spring 30 is connected to the channel bar 16 intermediate the angle brackets '18 and: 19

A coil held i in such position of ad ustment b nuts 28 screwed down upon the bolts. member .27 is substantiall shape with the exception t at it is provided by means of an eye 31 and to the plate mem-p.

e rearward roller 25. The parts are'so positioned that the rearward roller 25 is normally held inengagement with the cutterv blades 13 so as to roll thereon,

this engagement beinglpfiected by the action of the spring .30, in w ch position the plate extends diagonally forwardly toward the side I of the form 5. When the screed is operating on one of the lower courses of concrete and the late member 27 is in the position shown in ig. 1, it will prevent the concrete from becoming packed or banked in between the forms and the end cutting blade, the action of the concrete and the reciprocating screed causing the plate member to oscillate slightly, whereby the rollers 25 will have working engagement with the cutting blade and the side of the form. When the machine is op-.

erating upon the top course of concrete, the attachment may be swung to an inoperative position by means of anoperating arrangement, now about tobe described.

Surrounding the rod 9 on opposite sides of the machine and rotatable thereon is a transversely extending tubular member or ipe 32, such member bein ment on the rod. lurnbuckle fittings 33 are fixedly arranged upon the pipe 32 inwardly of but adjacent each bearing bracket 10, which fittings adjustably receive a rod 34, the opposite end of which rod is adjustably received in another turnbuckle fitting 35 secured to the base of the channel bar 16. A

suitable crank arm operating member 36 is held against axia movebuckles will swing the goose neck channel bar 16 in an upward direction.

Although a preferred embodiment of the invention has been described and shown herein, it should be understood that the same is not to be limited thereto except in so far as the claims so limit it.

Having thus described ,my invention, 1'

its opposite ends adjacent the screed and the sides of a form respectively.

2. In a road making machine, a screed transversely reciprocable of the road forms, and a pivotally supported material engaging member arranged in front of the screed and provided with a pair of rollers, one of which is adapted to have rolling engagement with the the side of a form and the other of which is adapted to have rolling .engagement with the screed. I

3. In a road making machine, a transversely reciprocable scree a road form, and an arm pivoted to the machine and pivotally supporting a'material engaging member arranged in front of the screed adjacent an end thereof and extending angularly with respect thereto to prevent packing of material between said screed and said road form.

4. In a road .making machine, a screed transversely reciprocable of the road forms, an arm associated with the machine and extending forwardly thereof in front of the screed, and a material engaging member pivoted to said arm and arranged in front of the screed adjacent an endthereof and extending angularly therefrom toward a form.

5. In a road makin machine,-a screed reciprocable transverse y of the road forms upon which the machine travels, anarm associated with the machine and extending forwardly thereof and downwardly in front of the screed, a material engaging member pivoted to said arm adjacent the outer end thereof and angularly arranged in front of the screed, and means for normall maintaining the adjacent end of said mem er in contact with the screed.

.6. In a road making machine, a screed reciprocable transversel of the road forms upon which the machine travels a material engaging member arranged in front of the screed and extending angularly therefrom toward a form, and means associated with the machine for raising and lowering said member from and to its position in front of the screed.

7. In a road makin machine, a screed reciprocable transverse y of the road forms upon which the machine travels, an arm pivotally associated with the machine and extending forwardly of the screed, a material engaging member carried by said arm and adapted to be arranged in front of the screed in angular relation thereto, and means on the machine for raising and lowering said arm to move said member from or to its position infront of the screed.

adapted for use with 8. In a road makin machine, 'ascreed reciprocable transverse y of the road forms u on which the machine travels, an arm associated withthe machine and extending forwardly thereof and downwardlyin front of the screed, a material engaging member pivoted to said arm adjacent the outer end thereof and rovided with a pair of spaced rollers adapted to have rolling engagement with said screed and the sideof a form, and means for normally maintaining the engagement between one of the rollers and the screed.

9. In a road making machine, a screed reciprocable transversely of the road forms upon which the machine travels, an arm associated with the machine and extending forwardly thereof and downwardl infront of the screed, a substantially vertically disposed plate member for engagin the road material pivoted to said arm a jacent the outer end thereof and having a pair of rollers associated therewith adapted to have rolling enga ement with said screed and the side of a orm, and means for normally maintaining such engagement between one of the rollers and the screed.

10. In a road making machine, a screed reciprocable transversely of the road forms upon which the machine travels, an arm pivotally associated with the machine and extending forwardly thereof and downwardly in front of the screed, a material engaging member pivoted to said arm adjacent the outer end thereof and havin a pair of spaced rollers adapted to have rol ing engagement with said screed and the side of a form, respectively, means for normally maintaining the engagement between one of the rollers and the screed, and'means for raising and lowering said arm to move said member from or to its position in front of the screed.

11. In a road making machine, a screed reciprocable transversely of the road forms upon which the machine travels, an arm pivotally associated with the machine and extending forwardly thereof and downwardly in front of the screed, a substantially vertically disposed material engaging member pivoted to said arm adjacent the outer end thereof and having a pair of rollers associated therewith adapted to have rolling engagement with said screed and theside of a form, respectively, means for normally maintaining such engagement between one of the rollers and the screed, and means for raising and lowering said arm to move said member from or to its position in front of the screed.

12. In a road making machine, a screed reciprocable transversely of the road forms upon which the machine travels, a pair'of spaced material engaging members arranged in front of and adjacent the opposite ends'of the screed and extending an ularly therefrom, and means'associated wit the machine for raising and lowering said members from I and to their position in front of the screed.

13. In a road making machine,.a screed reciprocable transversel upon which the machmetravels, a pai'rof arms pivotally associated withthe machine each adjacent on opposite sides thereof and extending forwardl of the screed, a material engaging member carried by each arm and adapted to be arranged in front of the screed in an ular relation thereto, and means on the machine for raising and lowering said arms tomove said members from'or to their position in front of the screed.

14. In a road makingmachine, a screed reciprocable transversel upon which the machine travels, a pair of arms pivotally associated with the machine each adjacent on-opposit'e sides thereof and extending forwardly thereof and downwardly in front of the screed, a substantially vertically disposed material engaging member pivotedvto each arm adjacent the outer end thereof and havin a pair of rollers associated therewith a apted to have rolling engagement with said screed and the side of a form, respectively, means for normally maintaining such engagement between one of the rollers on each member and the screed,

and means for raising and lowering said arms to move said members from or to their position in front of the screed.v

In testimony whereof, I hereunto aflix my signature. A

JOSEPH H. MOSEL.

of the road forms of the road forms

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