US1918710A - Road paving form - Google Patents

Description

July 18, 1933- J. H. MOSEL ET AL ROAD PAVING FORM Filed March 21, 1929 Patented July 18, 1933 UNITED STATES PATENT OFFICE JOSEPH H. MOSEL, F LAKEWOOD, AND FRANK J. SCHWEMLER, OF SHAKER HEIGHTS,

OHIO, ASSIGNGRS TQ THE JAEGER MACHINE COMPANY, OF COLUMBUS, OHIO, A COR- PORATION OF OHIO ROAD PAVING FORM Application filed March 21, 1929. Serial No. 348,871.

This invention relates to road paving forms, and. more particularly to forms of this type which are adapted to serve as side molds for paving material and also as rails for supporting road building machinery.

An object of this invention is to provide an improved road paving form.

Another object olf this invention is to provide aroad paving form which will not be distorted or displaced by the weight of road building machinery.

The invention may be further briefly summarized as consisting in certain novel comhinations and arrangements of parts herein described and set forth in the appended claims.

In the accompanying sheet of drawings:

Figure 1 is a perspective view of the road paving'form of my invention.

Fig. 2 is a side elevational view thereof, with parts broken away; and

Fig. 3 is a sectional view taken on line 33 of Fig. 2.

Referring now in detail to the drawing, we show as an embodiment of our invention, a road paving form which, in addition to fulfilling the function of serving as a molding or retaining form for the pavingmaterials, also supports and guides apparatus used inroad construction. It is understood, of course, that two such forms, each consisting of a plurality of body members 10 arrangedend to end are positioned parallel to each other spaced apart a distance equal to the width of the pavement being laid, and

that the paving materials are placed between the forms. ,1

In Fig. 1 we show body members 10 arranged end to end to form a continuous side mold. These body members are con structed, as shown in Fig. 3, with a substantially horizontal leg forming a supporting base 11, and a substantially vertical leg forming a side mold 12. These two legs are preferably integral, and the body member in general may be said to be L-shaped in cross section. The free edge of the base 11 is flanged or turned upwardly to form the toe or stifiening flange 13. Theupper edge of the side mold 12 isfianged or. turned over,'as clearly shown in the drawing, to

form a finishing guide 14. This finishing guide serves as a supportand guide for the screed or strike-off member of pavement finishing apparatus used in giving the paving material a finished surface, and is, in

effect, a template for the pavement being laid.

The body members, as already'stated, are arranged end to end and form a continuous side mold and finishing guide or template. For securing the ends of these body members together, to prevent relative mot-ion between them and' the consequent 111lSLllg11- ment of the side molds and guides, any satisfactory means may be employed, but for this purpose we have shown clips 15 secured to the side molds 12 adjacent the'ends of each body member, and a plate 16 which spans the meeting lineof the members and is held by'the clips in vertical parallel relation with the side .molds. One end of plate 16 may be bent, as indicated at 17, so that when the plate is placed between the clips and the side mold the bent portion 17 may be driven into wedgingengagement with one of the clips to lock the plate in place.

For reenforcing the forms, and to insure their being held in proper position, we provide stake-boXesor stake-pockets 18 at spaced intervals along the body members. These stake-boxes are preferably hollow members of inverted U-shape, and are securely fastened to the base 11 and the side mold 12, as by welding, or in any other con venient way. In the top wall of eachstakebox an opening 19 is provided which aligns with an opening 20 in the base 11. .For anchoring and holding the body members in place we prefer to use stakes 21 which are driven into the ground so as to pass through these aligned openings. In the vertical walls of each stake-box we have provided aligned slots 22, through which a tapered key or pin 23 may bedriven, so as to Wedge the stake 21 against one side of the alignedopenings 19 and 20, and thus clamp or lock each stake-box to its respective stake. A pin 24 may be provided in which the upper ends of the small end of each tapered key to prevent the key from movingout of the aligned slots when the stake is disengaged. With the forms locked to the stakes in this manner, the stakes serve to hold the forms against movement in a vertical plane, as well as to hold them againstlateral displacement.

v For supporting the pavement finishing apparatus, we provide load carrying members or rails 25, having hollow heads 26 formed bet- ween flanges 27 and 28. These rails are arranged end to end and bear upon 7 the stake-boxes 18 with'the hollow heads extending substantially parallel with the finishing guides 14. The aligned openings 19 and 20 are so placed as to form longitudinally extending rows of openingswith the axes of the rows in the vertical plane which passes through the approximate longitudinalcenter line of the base 11. The hollow heads 26 extend along over these rows of openings, and form a pocket into stakes 21 may project. With this arrangement of parts, the stakes need not be driven down flush with the top of the stake-boxes, but may be left with a portion extending above the top wall of these boxes. Such a portion extending above the stake-boxes affords a good grip on the stakes, and greatly facilitates the operation of pulling them out of the ground when the forms are taken up.

It is obvious that the rails 25 may be held in place in various ways, and in the arrangement shown perforations 29 are provided in the flange 28 of the rail 25, and these perforations align with perforations 30 formed in the top wall of the stakeboxes. Pins 31 are inserted through these aligned perforations at the bearing points intermediate the ends of the rails. However, we have found that the deflection of the rails intermediate the bearing points, due to the concentrated load being carried, produces a tendency for the ends of the rails to be lifted away from the stake-boxes, and to avoid this objectionable result we find it advisable to securely clamp the ends of the rails to the stake-boxes as by means of the bolts 32. a

To reduce the, deflection of the rails 25 between their bearing points upon the stakeboxes, we prefer to provide intermediate bearing members 33. These intermediate bearing membersmaybe ofv any suitable shape, but in this instance are shown as plates bent to V-shape and welded, or secured in any convenient manner, to the under surface of the rail flanges 27 and 28,

with the apex extending downwardly and bearing upon the base 11. It is obvious that instead of providing a single V-shaped member between each pair of stake-boxes, a series of these members may be used, and

if desired, they may be so proportioned as to support the rails independently of the stake-boxes.

Heretofore the removal of paving material, which has iowed over the side mold and dropped. down upon the base, has been a diflicult operation requiring considerable time and frequently damaging the forms. To obviate this difliculty the flange 27, of rail 25, has been made to abut against the surface of the side mold 12 to form a cover plate for the space between the stake-boxes. This cover plate collects paving material, which flows over, or is pushed over the guide by the strike-off member, thereby preventing this material from dropping down upon the base 11. The collection of paving material on the cover plate can be easily removed without damage because the rails 25 are relatively light in weight ascompared with the body members 10, and can be conveniently lifted and handled so as to dump this-collection where it may be desired for further use as paving material. It should be stated at this point that the extension of the flange 27 to abut against the side mold in no Way essential to the proper functioning of the rails as load cariying members, but forms an efiicieut cover plate for the space between the stake-boxes The head portion 26, of the rails 25, forms a load contacting portion upon which the wheels of the road building machinery may travel. This contacting portion lies in the vertical plane which passes through the approximate longitudinal center line of the base 11,, so that the load of the paving machinery on the track formed by these rails will be distributed uniformly over the base. Heretofore this heavy machinery was supported on the finishing guides formed along the upper edge of the side molds, and when supported in this manner its weight was largely concentrated along one edge of the base, and frequently caused settling and tilting of the body members which resulted in misalignment of these parts. By placing these rails so to concentrate their load above the approximate center line of the base a distribution of the weight of this machinerywill be effected which will obviate this tilting and settling heretofore experienced in supporting this machinery on the finishing guides, so that the finishing guides will be retained in proper alignment as a template for laying a uniformly level pavement.

The oints between adjoining rails have been indicated at 34, and the joints between adjoining body members 10 have been'indicated at When the rails 25 are laid they are arranged so that the joints will alternate with the joints 35, as indicated in Fig. 1. By assembling the apparatus in this manner, with the joints of the load carrying rails alternating with the joints of the body members therails 25 bridge over or spanthe joints' fi between the body members, and loads carried by the rails are distributed. over a large portion of thelength of the-body members, and no concentrated loads are imposed at the joints of the body members. Since the paving machinery imposes no concentrated loads on the joints of thebody members, in our arrangement the usual downward deflection of the ends of these members will be avoided, and the side molds'and finishing guides will remain in proper alignment so that the pavement laid will be level and devoid of the depressions which heretofore frequently occurred at the joints in the paving forms.

In road forms constructed according to our v invention the load carrying rails or members 25 can be replaced when they have become worn without the necessity of renewing or replacing the entire form, and as th cost of the rails is small in relation to the cost of the entire form, this advantage over U forms heretofore used, represents a considerable saving in the cost of replacement equipment.

Furthermore, where it is usual in road construction to have paving forms set up on each side of the road for a considerable distance inadvance of the paving machinery, We find that only a comparatively short section of track composed of load carrying rails 25 need be laid in advance'because these rails can be easily and-quickly removed and advanced as the work of laying the pavement proceeds. lVhile a quantity of paving forms must be kept on hand for setting up in advance, our invention permits a great reduction in the outlay of paving equipment since only comparatively few of the rails 25 need be purchased and kept on hand.

It will now be readily apparent that by our construction we have transferred the bulk of the weight of pavement finishing apparatus from the edge of the road form to a point above the approximate longitudinal center line of the base, with the result that an even distribution of the weight of the finishing apparatus is obtained, and tilting and settling of the forms is thereby largely eliminated, with the result that a pavement of more nearly exact dimensions, and with a a uniformly even surface, may be laid.

'In disclosing our invention we have re ferred to the rails 25 as being particularly useful for supporting that part of the finishing machinery which actuates the screed or strike-off member guided by the top portions of the side molds, however, the utility of our arrangement is by no means limited to use with. pavement finishing apparatus, but is extremely useful in conjunction with other road building machinery, such as subgraders or the like.

While we have shown and described the preferred form ofour apparatus it will be understood that various changes and modifications may be made without departing from the spirit of the invention and the scope of the appended claims.

Having thus described our invention, We claim: q 1. In apparatus of the character described the combination of a body member having a base, a rail having a load contacting portion, and means interposed between said base and said rail for supportingthe latter with said contacting portion in the vertical plane whichpasses through the approximate longitudinal center line of said base.

2'. In apparatus of the character described the combination of a body member having a base and an upright side mold, one edge of said side mold forming a finishing guide, stake-boxes secured to said base and to said side mold, and a load carrying member supported by said stake-boxes and extending parallel with said finishing guide.

3. In apparatus of the character described the combination of a body member having a base, means for holding said body member against displacement, and a load carrying member having a load contacting portion in. alignment with said holding means.

4:. In apparatus of the character described the combination of a body member having abase, means for holding said body member against displacement, a load carrying member having a load contacting portion in alignment with said holding means, and means interposed between said base and said load carrying member for supporting the tatter and distributing the load over said ase.

5. In apparatus of the character described the combination of a body member, means for reenforcing said body member, means for holding said body member against displacement, and load carrying means supported on said reenforcing means in alignment with said holding'means. r

6. In a road form the combination of a body member having an upright leg formmg a side mold and a horizontal leg formmg a supporting base, said base having a longitudinal row of spaced openings centrally thereof, reenforcing means attached to said legs and providedwith openings adapted to align with the openings of said 1 base stakes extending through said aligned openings, and a rail supported on said reenforcing means and having a hollow portion disposed above said openings.

7. A road'form comprising a body memher having an upright side mold and a horizontal base, a detachable load carrying rail extendingparallel with said side mold, and support ng members interposed between said rall and sand base, said rail forming a cover %or the space between said supporting memers.

8. A road form comprising a body member, a detachable load carrying rail extending parallel with said body .member, and spaced supports for said rail, said rail forming a cover for the spaces between said supports. f

9, A road form comprising a body member, stake-boxes secured to said body memher at spaced intervals, and a load carrying member detachably supported on said stake-boxes and having a flange adapted to abut against saidbody member and form a cover for the spaces between said stakeboxes.

10. A road form'comprising a body member, stake-boxes secured to said body member at spaced intervals, and a rail detachably supported on said stake-boxes and forming a coverv for the space between said stake-boxes. I

11. In a road form the combination of rails forming a track, and body members forming a continuous mold and supporting said track, the joints between adjoining rails alternating with the joints between adjoining body members. I V a 12. In road forms the combination of body members arranged end to end, rails forming a track, and means for supporting said track, the joints between said rails alternating with the joints between said body members.

13. A road form comprising a body memher having an upright flange forming a side mold and a horizontal flange forming a base, a rail extending parallel with said side mold, means for supporting said rail, and reenforcing members interposed between said rail and said base and secured to said flanges. I

14. In a road form the combination of a plurality of mold members arranged end to end to form a ,continuous mold, detachable load carrying members extending parallel With-said mold members and forming a track, supports for-saidtrack, said supports being carried by and spaced longitudinally of said mold members, and means for removably securing the ends of said load carrying members to said supports. I

15. In apparatus of the character described the combination of upright means forming a side mold for paving material, means for maintaining said side mold in a desired position includingmembers extending substantially horizontally with respect to said side mold, and means detachably carried by said members for supporting road building machinery. a

16. In apparatus of the character described the combination of upright means forming a side mold for paving material, means for maintaining said side mold in a desired position including stake boxes ex tending substantially horizontally with respect to said upright means, and means detachably carried by said stake boxes for supporting road building machinery.

-17. In apparatus of the character described, the combination of a member having a base and a substantially upright side mold portion, said side mold portion having means thereon forming a pavement finishing guide, stake boxes secured to said base and said side mold portion, and a load carrying member extending parallel with said finishing guide and detachably supported on said stake boxes.

18. In apparatus of the character described, the combination of a member having a base and a substantially upright side mold portion, stake boxes secured to said base and said side mold portion, and a load carrying rail detachably supported on said stake boxes.

JOSEPH H. MOSEL. s FRANK J SCHWEMLER.

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