US2090959A - Paving and canal lining machine and method - Google Patents

Description

Aug. 24,- 1937. c. JACKSON PAVING AND CANAL LINING MACHINE AND METHOD 4 Sheets-Sheet 1 Filed Aug. 2 1953 INVENTOR Co a/fl/ 00435517 z ATTORNEY?) Au 24, 1937. cf JAcKsoN PAVING AND CANAL LINING MACHINE AND METHOD 4 Sheerls-Sheet 2 Filed Aug. 2 1933 INVENTAOR ATTORNEY?! Au 24, 1937. c. JACKSON PAVING AND CANAL LINING MACHINE AND METHOD 4 SheetsShet 5 Filed Aug. 2 1935 INVENTOR QWMY/ Che/ram 7 v; ATTORNE;

Aug. 24, 1937. c. JACKSON PAVING AND CANAL LINING MACHINE AND METHOD Filed Aug. .2 1933 4 Sheets-Sheet 4 qwENToR Forwfl/ Jaa/m n 7'1 ATTORNEYS Patented Aug. 24, .1937 I UNITED STATES PATENT OFFICE;

mvnm AND csmu. LINING MACHINE AND METHOD Col-will Jackson, Ludington, Mich. v Application August 2, 1933, Serial No. 683,243

31 Claims.

and properly positioned with a minimum of' labor.

Third, to provide a machine having these advantages the use of which results in a very superior product.

' Fourth, to provide a machine of the class described which is of large capacity.

Fifth, to provide an improved method of placing concrete.

Objects pertaining to details and economies of my invention will definitely appear from the description to follow. The invention is defined in the claims.

20 A structure embodying the features of my in-v vention is clearly illustrated in the accompanying drawings, in which:

Fig. 1 is a side elevation of my concrete placing machine as embodied for the laying of side wall linings or facings of canals, the machine being conventionally illustrated in operating relation to a canal.

, Fig. 2 is an enlarged fragmentary view mainly in section on line 22 of Fig. 6 showing the machine in operative relation to the concrete being placed.

Fig. 3 is a fragmentary view partially in section on line 3-3 of Fig. 2 illustrating details of 35 the vibrating mechanism.

Fig. 4 is a detail section on line l4 of Fig. 3. Fig. 5 is a fragmentary end elevation from the right of Figs. 3 and 6.

Fig. 6 is a fragmentary plan view of the car- 4O riage and parts carried thereby.

Fig. 7 is an enlarged detail section on line of Fig. 6.

Fig. 8 is an enlarged detail section on line 8-8 of Fig. 6.

Fig. 9 is a fragmentary, end elevation from the left of Fig. 1.

Fig. 10 is a fragmentary end elevation from The structure illustrated in the accompanying drawings is well adapted for the placing of concretev in 'accordance with the method of my Patent No. 1,787,449, issued January 6, 1931, and the method of thisv application is an adaptation of and for some practices an improvement upon the method of that patent.

The machine'illustrated is especially designed for lining the inclined walls of canals or other inclined surfaces although it is only necessary to modify the frame to adapt the same mechanism to the laying of pavements or other concrete slabs on horizontal surfaces. I have notillustrated such an adaptation as it will be appreciated that the only modification required would be to arrange the carriage supporting rails in a horizontal position instead. of an inclined position as shown in Fig. 1. g

The structure illustrated comprises a pair of fabricated side members designated generally by the numerals I, I and end members designated generally by .the numerals 2 and 3. The frame is preferably open between these side and endmembers for purposes which will be pointed out as the description proceeds.

The end members are provided with carrying wheels 4 and 5, and the wheels 5 are adapted to travel on rails 6 arranged parallel to the canal or other inclined surface. An inclined canal wall is indicated at l and the bottom at 8. The wheels 4 are designed to travel on the previously laid bottom slab or lining 9 for the bottom 8.

The wheels are mounted on brackets ill on the frame which have arms ll receiving the screws or threaded jacks I2 provided for properly positioning the frame to secure the desired grade or thickness of slab. These adjusting screws also provide supporting feet sustaining the load so that while the machine is operating in laying the slab the wheels do not need to be blocked or otherwise locked.

The side members of the frame are provided with rails l3 also serving in the embodiment il,

the motor l9 and connected to the shaft through the speed reducing gear train 28, the purpose being to propel the carriage quite slowly but at uniform speed.

Mounted on the carriage is a screed 2| having a rounded nose 22 merging into the rear hopper wall 23, see Fig. 2. This screed is provided with means for vibrating'at high frequency, a pair of vibrating units '24 being provided in the structure illustrated.

These vibrating units illustrated comprise motors shown conventionally in Fig. 11, the rotors of which have shafts 25 provided with unbalancing weights 26. The housing has feet or supporting brackets 24| at each end secured to the shoe'of the screed so that the screed is vibrated at high frequency when the vibrating units are running.

The front wall 21 of the hopper, which is 'disj posed in a forwardly inclined relation, is-mounted upon the-vibrating support 28 having shoes 29 at its ends. These shoes are preferably provided with a non-metallic facing 38 such as a brake lining. The shoes slidably support the member 28 on-the inclined slideways 3| on the carriage. The member 28 is supported and adiusted by means of heavystraps 32 secured at their upper ends to the winding shaft 33. This winding shaft, is provided with a ratchet wheel 34 coacting with a pawl or detent-35 for holding the shaft in its adjusted position.

The shaft is rotated from a lever 36 pivoted on the outer end of the shaft 'and'provided with a pawl 31 controlled from the handpiece 38, the pawl coacting with a driving ratchet wheel 39 on the shaft. This provides suitable leverage for similar to the vibrating units 24 on the screed." On the member 28 below the hopper wall or turning the shaft. It will be understood that there is considerable load on the hanger straps The member 28 is provided with a vibrating means, preferably a pair of vibrating units 40 plate 21 I mount a plurality of rods or fingers 4| clamped to the support member 28 by means of U bolts 42 so that the rods or fingers are vibrated with the vibrating support 28. These fingers or vibrating rodsproject in a downwardly and rearwardly inclined relation below the front end of the screed and thoroughly vibrate the concrete mixture at this point.v However, they are so adjusted as not to interfere with the reinforce elements indicated at 43, the reinforcing material being supported on suitable chairs conventionally illustrated at 44.

The lower edge of the hopper wall 21 is suitably spaced relative to the hopper wall 23 so that the desired amount of concrete is discharged, that is, the discharge of the concrete is regulated according to the travel of the carriage.

In practice the concrete mixture may discharge the concrete mixture but the machine is very' effective in practicing the method of my' above mentioned patent in which the water ratio is so low that concrete cannot be placed by the usual methods. As pointed out in the patent, the

condition of the non-workable mixture is changed by the high frequency vibrations so that such a mixture can be effectively placed, and this is highly desirable on inclines not only on account of the superior concrete resulting but because it enables the placing of concrete without forms. The movable side wall form 45 is provided for the purpose of providing'a straight edge -for a succeeding slab. The previously placed slab serves as a form at oneedge.

The rods or fingers 4| agitate and vibrate the mass below the front end of the screed so that not only are all voids effectively eliminated ,but these members add to the vibrating walls of the hopper and the vibration of the screed in setting discharged'from the hopper is effectively worked under the screed so that the finished product is of substantially uniform' density, that is, there are no voids in the mass or pockets in the surface which might result particularly were it not for the action of these fingers, especially where relatively coarse aggregate is employed that might become lodged or wedged. together, preventing the flowing and positioning of the concrete as discharged from the hopper.

'It has been found that it is not essential to continuously vibrate the screed throughout the movement of the carriage, but it is quite desirable to vibrate it in initial position as shown in Fig. 1 in order that the concrete may be effectively worked into-position. With certain materials and grades it is fou'ndnot to benecessary to continue this vibration throughout the travel of the carriage as the vibrating plate'or wall 25 and the vibrating fingers are found to be sufficient so that the screed may be used merely as a screed.

The method of placing concrete of non-workable water content by vibrating in the hopper I and as discharged to and below thefront por- Having thus described my invention, what I claim as new and desire to secure by Letters Patcut is:

1 1. In a machine combination with a frameprovided with spaced inclined rails, of carrying wheels arranged at the ends of the. frame for travel in a direction transverse to the-rails, screws at the corners of the frame for vertically adjusting and supporting the frame independently of the carrying wheels, a carriage suspended below the rails, said carriage being provided with propelling cables, 9'. 1 drum shaft mounted at the upper ends of the rails and provided withwinding drums for said cables, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a motor mounted on of the class described, the

said screed and provided with a rotor having an unbalancing weight, forwardly inclined ways on said carriage at the front of said screed, a vibrating support member provided with'slides on said ways, -adjusting and supporting straps for rotor having an unbalancing weight, and a hopper .wall mounted on said support in opposed coacting relation to said hopper wall on said screed, the lower edge of said hopper wall being spaced from the hopper wall on said screed to provide a hopperdischarge opening. 2. In a machine of the class described, the combination with a frame provided with spaced inclined rails, of a carriage suspended below the rails, said carriage being provided with pro-. pelling cables, a drum shaft mounted at the upper ends of the rails and provided with winding drums for said cables, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a motor mounted on said screedand provided 0 with a rotor having an unbalancing weight, for wardly inclined ways on said carriage at the front of said screed, a vibrating supportmember provided with slides on said ways, adjusting and supporting straps for said support, a winding shaft for said straps disposed at the upper ends of said ways, a motor mounted on said vibrating support and provided with a rotor having an unbalancing weight, and a hopper wall mounted on said support in opposed coacting relation to 0 said hopper wall on said screed, the lower edge of said hopper wall being spaced from the hopper wall on said screed to provide a hopper discharge opening.

3. In a machine of the class described, the 5 combination with a frame provided with spaced inclined rails, of carrying wheels arranged at the ends of the frame for travel in a direction transverse to the rails, screws at the corners of the frame for vertically adjusting and supporting the frame independently of the carrying wheels, a carriage suspended below the rails, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a motor mounted on said screed and provided with a rotor having an unbalancing weight, forwardly inclined ways on said carriage at the front of said screed, a vibrating support member provided with slides on said ways, a motor mounted on said vibrating support and provided with a rotor having an unbalancing weight, and a hopper wall mounted on said support in opposed coacting relation to saidhopper wall on said screed, the lower edge of said hopper wall being spaced from the hoppeiywall on said screed to provide a hopper discharge opening. 4. In a machine of the class described, the combination with a frame provided with spaced. inclined rails, of a carriage suspended below the rails, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a motor mounted on I said screed and provided with a rotor having an unbalancing weight, forwardly inclined ways on said carriage at the front of said screed, a. vibrating support member provided with slides on said ways, a motor mounted on said vibrating support and provided with a rotor having an unbalancing weight, and a hopper wall mounted on said support in opposed coacting relation to said hopper wall on said screed, the lower edge of said 0 hopper wall being spaced from the hopper wall on said screed to provide a hopper discharge opening.

5. In a machine of the class described, the combination with a frame provided with spaced in- 5 clined rails, of a carriage suspended below the rails, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said'screed, a motor mounted on said screed and provided with a rotor having an unbalancing weight, forwardly inclined ways on saidfcarriage at. the front of said screed, a vibrating support member provided with slides on said ways, a motor'mounted on said vibrating support and provided with a rotor having an unfront edge of the screed.

6. In a machine of the .class described, the combination with a frame provided with inclined rails, of carrying wheels arranged at the ends of the frame for travel in a direction transverse to the rails, means at the comers of the frame for vertically adjusting and supporting the frame,

a carriage suspended below the rails, said carriage being provided with propelling cables, a drum shaft mounted at the upper ends of the rails and provided with winding drums for said cables, a screed mounted. on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a vibrating support member provided with slides on said ways, ad-

justing and supporting straps for said support, a .winding shaft for said straps disposed at the upper ends of said ways, a vibrating unit on said vibrating support, and a. hopper wall mounted on said support in opposed coacting relation to said hopper wall on said screed, said walls being arranged to provide a hopper discharge opening at the bottom of the hopper.

7. In a machine of the class described, the combination with a frame provided with inclined rails, of a carriage suspended below the rails, said carriage being provided with propelling cables, a

drum shaft mounted at the upper ends of the rails and provided with winding drums for said cables, a screed mounted on said carriage, there being a hopper'wall extending upwardly from the front edge of said screed, a vibrating unit on said screed, forwardly inclined ways on said carriage at the front of said screed, a. vibrating support member provided with slides on said ways, adjusting and supporting straps for said support, a winding shaft for said straps disposed at the upper ends of said ways, a vibrating unit on said vibrating support, and a hopper wall mounted on said support in opposed coacting rela-'- tion to said hopper wall on said screed, said walls being arranged to provide a. hopper discharge opening at the bottom of the hopper.

8. In a machine of the class described, the combination with a frame provided with inclined rails, of carrying wheels arranged at the ends of the frame for travel in a' direction transverse to the rails, means at the corners of the frame for vertically adjusting and supporting the frame, a

carriage suspended below the rails, a screed. mounted on said carriage, there being a hoppe/ arranged to provide a hopper discharge opening said hopper wall on said screed, said walls being arranged to provide a hopper discharge opening at the bottom of the hopper.

9. In a machine of the class described, the combination with a frame provided with'inclined rails, of a carriage suspended below, the rails, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a vibrating unit on said screed, forwardly inclined ways on said carriage at the front of said screed, a vibrating support member provided with slides on said ways, a vibrating unit on said vibrating support, and a hopper wall mounted on said support in opposed coasting relation to said hopper wall on said screed, said walls being at the bottom of the hopper.

10. In a machine of the class described, the combination with a frame provided with inclined rails, of a carriage suspended below the rails, a screed mounted on said carriage, there being a hopper wall extending upwardly from the front edge of said screed, a vibrating unit on said screed, forwardly inclined ways on said carriage at the front of said screed, a vibrating support member provided with slides on said ways, a vibrating unit on said vibrating support a hopper wall mounted on said support in opposed coacting relation to for vertically adjusting and supporting the frame, 40 a carriage suspended'below the rails, said carriage being provided with propelling cables, a drum I shaft mounted at the upper ends of the rails and provided with winding drums for said cables, a screed mounted on said carriage, a hopper dis- 45 charging at the front of said screed, and spaced series of vibrating fingers carried by said carriage and projecting downwardly and rearwardly below 'the front :of the screed.

12. In a machine of the class described, the

0 combination of a frame provided with spaced inclined rails, carrying wheels arranged at the ends of the frame for travel in a direction transverse.

to the rails, means at the corners of the-frame for vertically adjusting and supporting the frame,

a carriage suspended below the rails, said carriage being provided with propelling cables, a drum.

screed mounted on said carriage, and a hopper 60 discharging at the front of said screed.

13. In a machine of the class described, the combination of a carriage, a screed on said carriage, ways on said carriage at the front of said screed, a vibrating support member provided with 65 slides on said ways, adjusting and supporting straps for said support, a vibrating unit on said v vibrating support a hopper including a rearwardly inclined wall mounted on said support, and spaced fingers on said support projecting downwardly and rearwardly below the plane of the screed.

14. In a machine of the class described, the combination with a frame provided with spaced inclined rails, of carrying wheels arranged at the ends of the frame for travel in a direction trans- 75 verse to the rails, means at the corners of the frame for vertically adjusting and supporting the frame, a carriage suspended below the rails, a screed mounted on'said carriage, a hopper discombination with a frame provided with spaced inclined rails, of carrying wheels arranged at the ends of the frame for travel in a direction transverse to the rails, means at the corners of the frame for vertically adjusting and supporting the frame, a carriage suspended below the rails, a screed mounted on said carriage, and a hopper discharging at the front of said screed.

16. In a machine of the class described, the combination with a supporting frame, of a carriage on said frame, a screedon said carriage, ways on said carriage at the front of said screed, a vibrating support member adjustable on said ways, a motor mounted on said vibrating support and provided with a rotor having an unbalancing weight, a hopper including a rearwardly inclined wall mounted on said support, and spaced fingers on said support projecting downwardly and rearwardly below the plane of the screed.

1'7. In a machine of the class described, the combination with a supporting frame, of a carriage on said frame, ,a screed on said carriage, ways on said carriage at the front of said screed, a vibrating. support member adjustable on said ways, a motor mounted on said vibrating support and provided with a rotor having an unbalancing weight, and a hopper including a rearwardly inclinedwall mounted on said support.

18. Ina machine of the class described, the combination of a carriage, a screed on said carriage, vibrating means for said screed, a vibrating support adjustable on saidcarriage relative to said screed, means for vibrating said support, a hopper .including a wall carried by said support, and spaced fingers on said support projecting downby saidsupport, and spaced fingers on said support projecting downwardly into the material discharged from the hopper.

20. In a machine of the class described, the

, combination of a carriage, a screed on said carriage, vibrating means for said screed, a vibrating support adjustable on said carriage relative to said screed, means for vibratingsaid support, and a hopper including a wall carried by saidsupport.

21. In a machine of the class described, the combination with a supporting frame, of a carriage, a screed on said carriage, vibrating means for said screed, a vibrating support on said carriage, vibrating means for said support, a hopper discharging in front of said screed support, and

fingers on said support projecting into the material discharged from the hopper.

23. In a machine of. the class described, the combination of a carriage, a screed on said carriage, a vibrating means for said screed, a hopper discharging in front of said screed, and vibrating fingers projecting into the material discharged from the hopper.

24. A structure of the class described comprising a vibrating screed, a hopper having vibrating walls discharging in front of the screed, and means in addition to the vibrating screed for internally vibrating the concrete within the slab under the forward portion of the screed.

25. A structure of the class described comprising a vibrating screed, a hopper having vibrating walls discharging in front of the screed, and means for internally vibrating the concrete within the slab under the forward portion of the screed.

26. The method of forming concrete slabs consisting of discharging the concrete mixture at the front of a traveling screed, vibrating at high frequency, and simultaneously vibrating the concrete mixture by means independent of the screed substantially below the face of the screed.

27. The method of forming concrete slabs consisting of discharging the concrete mixture from a, hopper vibrated at high frequency under a traveling screed also vibrated at high frequency.

28. The method of forming concrete slabs con.- sisting of discharging the concrete mixture from a vibrating hopper in advance of a screed, and internally vibrating the concrete as discharged from the hopper under the forward portion of the screed.

29. The method of forming concrete slabs consisting of discharging the concrete mixture at the front of a traveling screed, and simultaneously internally vibrating the concrete mixture substantially below the face of the screed.

30. Apparatus for handling concrete and like material including, a hopper adapted to be operated along a form to pass material into the form, an element extending through the lower portion of the hopper and supported for free vibration relative thereto, and means for continuously vibrating the element. a

31. Material handling apparatus including, a hopper adapted to be operated along a form to pass material into the form, an element for passing into the materials at the lower end of the hopper, means supporting theelement for movement with the hopper and free vibration relative thereto, and means for vibrating the element.

CORWILL JACKSON.

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