US1238497A

US1238497A - Apparatus for leveling and tamping concrete road-beds.

Info

Publication number: US1238497A
Application number: US15090617A
Authority: US
Inventors: Myles A Connelly
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-02-26
Filing date: 1917-02-26
Publication date: 1917-08-28
Anticipated expiration: 1934-08-28

Description

M. A. CONNELLY. APPARATUS FOR LEVELING AND TAMPING CONCRETE ROAD BEDS. APPLICATION man rss. 26. i912.

1,23%91 Patented Aug. 28, 1927.

2 SHEETS-SHEET 1. 3 s 1 2; 1 Z i mz ,2 3 E Q Q I I Q I 4 INVENTEIF z 30 {12 13 ATTEJFINEY M. A. CONNELLY. APPARATUS FOR LEVELING AND TAMPING CONCRETE ROAD BEDS. APPLICATION FILED FEB. 26, 1917.

1,238A9'K Patented Aug. 28, 1917.

2 SHEETS-SHEET 2.

INVENTEIFI ATTEJFINEY.

. mesa-Let.

UT at rnrnnr crimes;

MYLES A. CONNELLY, OF YOUNGSTOWN, OHICD.

APPARATUS FOR LEVELING AND TAMPING (IGNORE-TE RUAD-BEDS.

' posited-Inlay be evenly "spread and tamped to form a'ba'se for the brick in the construction of brickaved roads.

A "flirt er object is to provide a machine of the character mentioned having such width that the full width of the roadway under construction is thereby traversed and acted upon, thus providing for the formation of a surface devoid of the irregularities which are commonly incident to the use of :a'es'preader or. roller which is qf 'relatively narrow gijdth and which, consequently, re- Eiquircs a number of parallel passes to complete-*th'e surfacing of the roadway. v

A still further object is to provide a spreading and tampingrmachine which is capable of adjustment to any width necessitated by the width of the roadway under construction.

Another object within the contemplation of the invention is to provide means for abrading or slightly roughing the surface following the tamping of the latter.

With these and other incidental objects in view, the invention resides in the features of construction, arrangement of parts and combinations of elements which will hereinafter be exemplified, reference being had to the accompanying drawings, in which Figure. .1 is a view partly in top plan and partly in horizontal section, showing an embodiment of the invention;

Fig. 2 is a transv, rse section on line 22,

Fig. 3 is 'an enlarged fragmentary sectional view in; perspective, illustrating various features 'if-of the inventicn;fand- Fig. i is an enlarged section on line 4-4, Fla; 1, i

Referring to said drawings, in which like designating characters distinguish like parts throughout the several views- Specification of Letters Patent.

Application fil ed February 26, 1917. Serial No. 150,906,

1 indicates each of two opposite .frame members mounted upon suitable wheels or rollers 2 which are designed, preferably, to travel upon tracks constituted by longitudr nal road-defining forms 3. Said. members are rigidly connected by a cross-member which is preferably composed of two channel irons 4 disposed fiatwise and having their outer ends mounted upon said memhere, The inner ends of said channel irons are disposed'in telescopic relation and rigidly connected by bolts. Rigidly mounted on the under side of said cross-member and also disposed in telescopic relation is a pair of vertically disposed members 5 which may also be of channel formand which constitute supports for a vertically disposed scraper blade or templet 6 which latter may be a single plate or may be composed of a plurality of sections, as desired. Suitable braces, as 7, are disposed between the members 5 and the frame members 1 for maintaining a rigid relation.

Rollers

8 and 9 are carried by each of said members 1, the same being designed to ride against the inner faces of the forms 3 for reducing to a minimum the frictional resistance to travel of the machine which would otherwise be encountered in the event that one end of the latter should be advanced slightly ahead of the other. Said rollers are mounted upon vertical spindles 10 carried by the inner 1 ends of bolt-like stems 11 which are projected through the members 1. Said stems carry compression springs 12 thereon between a washer 13 and the outer face of saidmemberl, thus providing for holding said rollers under a yielding tension in engagement with the forms.

Bolted to the rear faces of the blade-supporting members 5 is a plurality of spaced lugs 14- to which are pivotally connected the front ends of short links 15 to the rear ends of which are pivotally connected the front ends of frame sections 16, hereinafter termed front-roll bearing sections, which sections are arranged in palrs. 'lhe sectlons composing each pair are rlgldly connected at their rear ends to the transverse conpecting portion of a til-shaped frame section 17, .hereinafter termed rear-roll bearing secthe two endmost thereof has a bearing 21 therein in which is journaled a shaft 22 carrying a tamping roller 23. Said rollers 23 have their opposite ends journaled in the adjacent bearing sections of adjacent pairs of said sections, as shown, while each of the rollers 20 is disposed within the embrace of a section 17 and has its opposite ends journaled in the opposite members of such section. Consequently, the disposition of the rear rollers 20 is such that they break joints with the front rollers 23, providing for the.

tamping of the entire width of the roadway under construction at a single pass of the machine.

Pivotally connected to the free rear end of each of the'parallel members of the rearroll bearing sections is one end of a link 24 which has its opposite end attached to a drag 25 which isdesigned to follow the rollers for roughening slightly the. surface of the tamped material to render the same better adapted for receiving paving bricks in seated position thereon. While said drag may be of any suitable character and may be made of any appropriate material, I prefer to employ a length of heavy leather belting, such having been found admirably adapted for the purpose. Said drag is made in two or more sections having their adjacent ends disposed in overlapped relation to adapt the same for adjustment with other parts of the machine to suit the width of the roadway being acted upon.

Suitably mounted upon the front face of the scraper-blade supports 5 adjacent to the outer ends of the latter is one end of a forwardly and outwardly inclined scraper 26 which has a tapered form to permit its front end to underlie the adjacent frame member 1, said scraper being designed to spread the material which lies close to the adjacent form 3. A bolt 27 is projected through said scraper at a suitable point and through a portion of the adjacent brace 5 and carries thereon a compression spring 31- whereby said scraper is yieldingly maintained in a position wherein its front end scrapes against the inner face of said form 1.

' Suitable means is provided whereby theheight of the frame members 1 and of the attached parts, including the scraper blades or templets 6, may be adjusted to regulate the working level of the latter, said means preferably comprising bearing blocks 29 in which are mounted shafts 32 upon which the supporting wheels or rollers 2 are rotatable. Said bearing blocks 29 are vertically movable in yoke-like guideways 28 attached to said frame members and are swiveled upon the ends of vertically disposed adjusting screws 30.

The ends of the foremost of the shafts 32 are preferably of squared form and project outward beyond the guideways 28, the same of the lever 33, the rear end of the frame member 1 may be elevated slightly to effect a slight shifting, or teetering, of said frame member, as for relieving binding between I said frame member and the form 3. I

As is obvious, due to the non-rigid or pivotal mounting of the

roll bearing sections

16 and 17, each of the

rollers

20 and 23 acts more or less independently of the others in following the scraper-blades. When it .becomes desirable to increase the tamping pressure of the rollers, the roll bearing sections 16 and 17-may serve as supports for plates or bars (not shown) which may be disposed thereon at points between adjacent alined rollers for supporting sand bags or the like whereby the weight of the machine may be increased.

To adjust the machine for use upon roads of different widths, the telescopingand overlapped parts hereinbefore mentloned may be extended or shortened, and one or more rollers with the necessary supporting sections therefor may be added or' removed, as required, such additions or removals being preferably made at or near the middle of the width of the machine.

It will be apparent that the machine described is readily susceptible to various changes and alterations in the construction and arrangement of its parts. It will therefore be understood that the invention is not confined to a strict conformity with the, showing herein specifically made, but the details of construction may be changed and modified to the extent that such changes and modifications mark no material departure fro-m the salient features of the invention as defined in the appended claims.

What is claimed is- 1. In a device for leveling and tamping concrete paving beds, a frame disposed across the road bed and adapted for adjustment to varying widths, scraping blades or templets carried by said frame, members pivotally connected to said frame and extending rearward therefrom, said members being arranged in pairs, tamping rollers journaled on said members, Ushaped members disposed rearward of said rollers and connected to the rear ends of said pivoted members, and a tamping roller j ournaled in each of said U-shaped members.

2. In a device for leveling and tampin concrete paving beds, a frame dispos across the road bed and adapted for adjust- I means? templets carried by said frame, members pivotally connected to said frame and extending rearward therefrom, said members being arranged in pairs, tamping rollers j ournaled on said members, U-shaped membeing arranged "in pairs, tamping rollers journaled on said members and disposed between adjacent pairs, a plurality of U- shaped members disposed rearward of said rollers, each having the rear ends of a pair of said pivoted members rigidly attached thereto, and a tamping roller journaled between the lateral members ofeach of said U-shaped members.

4. In a device for leveling and tamping concrete paving beds, a frame disposed across the road bed and adapted for adjustment to varying widths, scraping blades or templets carried by said frame, members pivotally connected to said frame and extending rearward therefrom, said members being arranged in pairs, tamping rollers journaled on said members and disposed between adjacent pairs, a plurality of U- shaped members disposed rearward of said rollers, each having the rear ends of a pair of said pivoted members rigidly attached thereto, and a tamping roller journaled between the lateral members of each of said U-shaped members, the location of the lastnamed members being such that the tamping rollers journaled therein break joints with the first-mentioned tamping rollers.

55. In a device for leveling and tamping concrete paving beds, a pair of oppositely disposed frame members, telescoping members disposed across the road bed and connecting said frame members, scraper blades or templets supported by said telescoping members, said templets being adapted for relative adjustment, bars pivotally connected to said telescoping members and extending rearward therefrom, a plurality of tamping rollers journaled on said bars, a' plurality of tamping rollers disposed rearward of the first-mentioned rollers and breaking joints with the latter, and members in which the last-mentioned rollers are j our- {)mled, said members being connected to said are. v v

6. In a device for leveling, and tamping concrete paving beds, a pair of oppositely disposed frame members, telescoping members disposed across the road bed and connecting said frame members, scraper blades or templets supported by said telescoping members, said templets being adapted for relative adjustment, vbars pivotally connected to said telescoping members and extending rearward therefrom, a plurality of ,tamping rollers journaled on said bars, a

plurality of tamping rollers disposed rearward of the first-mentioned rollers and breaking joints with the latter, and a plurality of U-shaped members connected to the a rear ends of said bars, the last-mentioned rollers being journaled on said U-shaped members.

7. In a device for leveling and tamping concrete paving beds, a pair of oppositely disposed frame members, telescoping mem-i bers disposed across the road bed and con necting said frame members, scraper blades or templets supported by said telescoping members, said templets being. adapted for relative adjustment, bars pivotally connected to said telescoping members and extending rearward therefrom, a pluralityof tamping rollers journaled'on said bars, a plurality of tamping rollers disposed rearward of the first-mentioned rollers and breaking joints with the latter, members in which the last-mentioned rollers are journaled, said members being connected to said bars, and anti-friction means preventing binding of the parts of the frame with roaddefining forms. a

8. In a device for leveling and tamping concrete paving beds, a pair of oppositely disposed frame members, telescoping members disposed across the road bed and connecting said frame members, scraper blades or templets supported by said telescoping members, said templets being adapted for relative adjustment, bars pivotally connected to said telescoping members and extending rearward therefrom, a plurality of tamping rollers journaled on said bars, a plurality of tamping rollers disposed rear ward of the first-mentioned rollers and breaking joints with the latter, members in which the last-mentioned rollers are journaled, said members being connected to said bars, and forwardly and outwardly extending yieldably mounted scrapers carried by said telescoping members adjacent to the outer ends thereof.

9. In a device for leveling and tampingconcrete paving beds, a main frame adapted for extending across the roadway, scrapingblades or templets carried by said frame, a plurality of. independent roll-bearing frame sections pivotally connected to and extending rearward from said main frame, and

tamping rollers mounted in said frame secconcrete paving beds, a frame, scraping naled in the last-mentioned members, said blades or templets carried by said frame, a rollers being arranged to break joints. 10 plurality of pairs of members pivotally In testimony whereof, I afiix my signature connected to and extending rearward from in presence of two subscribing Witnesses.

5' said frame, tamping rollers journaled on MYLES A. CONNELLY.

said members, members connected to and Witnesses: extending rearward from the first-men- H. E. DUNLAP, tioned members, and tamping rollers jour- W. F. KEEFER.