Патент USA US2110738код для вставки
March 8, 1938.‘ F, '0, PARKER v2,110,738 ROAD JOINT FORMING MEANS on THE.LIKE ‘ nl l Filed‘ June 5, 1936 \‘ WX§WW$ 4 .. IA 4 . L ‘ Z? 25 a?” a 2 . /5 /7 /7 J. . 5'. / /// 27‘ 00/9 _ - INVENTOR EeA/v/r 0. 24465656 BY _ ATTORNEY ' Patented Mar. 8, 1938 ' 2,110,738 ‘ UNITED STATES‘ . PATENT‘ OFFICE 2,110,738 ROAD JOINT FORlt?NG MEANS OR THE LIKE Frank 0. Parker, Buffalo, N. Y., assignor to Acme Steel & Malleable Iron Works, Inc., Buffalo, N. Y., a corporation of New York . Application June 5, 1936, Serial‘ No. 83,670 4 Claims. (Cl. 94-18) The present invention relates to improvements in what is known as the “dowel” type of supports for the joints between concrete slabs or the like and for transmitting the load from one slab to its adjoining slab. The invention is more. par ticularly applicable in connection with the trans verse joints of concrete roadways. shown in Fig. 1, parts in elevation, and showing . Some of the objects of the invention are as follows: i a concrete roadway showing the joint support involved in elevation, and secured to an expan sion ?ller, with parts of. the joint support em bedded in the concrete; Fig. 2 is a horizontal section of the support 5 a portion of an expansion ?ller; Fig. 3 is a transverse section on the line 3—3, Fig. 2, in the direction of the arrows; ' To provide a male member of the dowel type which is adapted to be embedded and anchored in one of the slabs of'a concrete roadway to ex~ tend across the transverse joint therein, a rea sonable length thereof terminating in the adja 15 cent slab or section and there having a tele scopic or sliding connection with a female mem Fig. 4 is a transverse section on the line 4-4, 10 Fig. 2, in the direction of the arrows, that is, in a direction opposite to that of Fig. 3; and Fig. 5 illustrates a slight modi?cation of a male member. _ Referring to Fig. 1, there is illustrated the sub- 15 base or sub-grade ill on which rest the concrete ber embedded in such adjacent section, the male or other slabs or sections II, I2 having a trans member being so constructed as to have its verse joint therebetween for receiving the expan greatest strength disposed at the transverse joint, sion ?ller or expansion joint I3. 20 where the shearing action or tendency is the Referring to Figs. 1 to 4 inclusive, the present 20 greatest between the two members, whether or invention includes a male member, more or less not the joint is a plain joint or one which is wide of dowel type, and it comprises a male member enough so as to receive the well known expansion proper l4. Preferably the male member proper ?ller of bituminous material or the like; to pro i4 is cylindrical and is preferably made hollow vide on the male member an abutment member such as a ?ange, for example, which is prefer ably so located as to contact with one of the sur faces of the expansion ?ller and to impart addi tional strength to the male member just where such added strength is needed, and such abut solid throughout, although it may be made solid if desired. I ment member or ?ange furthermore prevents the stem or shank 15 of preferably less diameter, the same being aligned with the longitudinal axis of member M. An abutment member 16, which concrete from cracking and breaking and, also acts as a support during the work of installation and the pouring of the concrete; to provide means Ll or tubular so as to give it the necessary strength 25 without the added expense of more metal, as would be the case if. the male member I4 was connecting the male and female members rigidly together at opposite sides of the expansion ?ller and to obtain perfect alignment between the two members, such connecting means being prefer ably of a temporary nature so as to be rendered 41 useless'by the contraction and expansion of the Member I4 is provided with an anchor portion, 30 . may be in the form of an annular ?ange or shoulder, is located on the inner end of the male 35 member proper and at the adjacent end of they anchoring shank IS. The outer extremity of the anchoring shank I5 is provided with lateral pro jections I‘! for safer anchorage. , It will be readily understood that if and when 40 the male member proper I4 is made of greater di concrete slabs after the concrete has set, for ex ample, the temporary connecting means shown, ’ ameter than the anchoring .stem or shank i5, described and claimed in my copending applica and particularly if. a strengthening ?ange or the tion Serial No. 1,482, ?led January 12, 1935; and like I6 is provided, that such members are so to make the male member and female member of such metal as to reduce and tend to eliminate corrosion. _ ‘ These being among the objects‘of the vpresent invention, the same consists of certain features 50 of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawing illustrat ing a preferred embodiment of the invention and wherein: Fig. 1 is a longitudinal section of a portion of arranged and constructed as to impart great 45 resistance against the tendency to shear them in the immediate zone in which the expansion ?ller I3 is used, and where such tendency is the greatest. A female member 18 is provided which is open . 50 at one end‘ to receive and telescope with the male member proper i4, and such female member is preferably closed at its other end and is also preferably cylindrical. The interior of the fe male member is of slightly greater diameter than 55 . 2 2,110,788 the male member proper I4 so as to provide for a telescopic and sliding connection between the two members and yet not allow very much clear ance between the two members, although the CI clearance may be as desired and as. the condi tions warrant. Female member I8 may be pro vided if desired with resistance or anchoring projections I9 extending laterally therefrom at its closed end. The flange It or the like of the 10 male member is provided with two or more holes 20 extending across its thickness, and when two holes are provided they are preferably 'at dia metrically opposite sides of member I6. Two or more laterally projecting lugs 2! are 15 on the open end of the female member I8, while two or more lateral lugs 22 are located between mansions serve the purpose very well, but of course may be varied within reasonable limits. ‘ To- install the various parts it is preferred that that be done before the expansion ?ller I3 is placed along the line of the ‘ultimate transverse joint to be formed between the slabs II, I2, so that a number of the joint supports can' be mounted upon the expansion filler in their de sired ultimate positions, and if the filler I3 is ?exible as the usual bituminous expansion ?ll 10 ers are, the same may be suitably stiifened by a stiffening member which is removed after the concrete has been set and hardened, all as dis closed in my aforesaid copending application. Therefore, each male dowel I4, I5 has its male member proper I4 entered through a preformed the lugs 2| and the closed end of female member hole in the ?ller I3, the same being fully intro- . I8, and the bases of these lugs are preferably _ duced when the member I6 is brought in hear enlarged for the sake of strength. Preferably ing relation with the adjacent surface of the filler so that the longitudinal axis of the male 20 the lugs 2 I, 22 are in pairs, with the lugs of each pair 2| or 22, as the case may be, projecting dowel stands at right angles to the plane of the radially from diametrically opposite sides of the filler. The adjacent end portion of the male female member I8, and the holes 20 in the mem member proper I4 vwill then snugly fit into the ber I6 will then be so arranged that when the hole of the ?ller. If two temporary connect~ 25 male member proper I4 and the female member ing bolts 24, 25 are to be used, it is preferred that I8 are telescoped together properly, they will be the holes 20 lie in a horizontal plane lengthwise aligned with the lugs. of the ?ller, as disclosed by Figs. 1 and 2. The Preferably each of the lugs 2|, 22 is hook female member I8 is then introduced over the shaped and in such case the recesses of the re male member proper I4 until the end adjacent 30 spective pairs of lugs 2|, 22 will be presented in the filler I3 is brought up to the corresponding 30 opposite directions for obtaining easy assembly surface of the filler, the female member being of the male and female members when bolts such so adjusted as to bring the recesses of the lugs as 24, 25 are passed through the holes 20 of the 2|, 22 into the same horizontal plane as that of member I6. Then the heads 23 of the bolts will the holes 20 in the member I6 which abuts the opposite surface of the filler." The temporary 35 bear on the lugs 22and nuts 26 or similar fas tenings for the bolts will bear on the abutment ‘bolts 24, 25 are then passed through- the regis member I5. - Inasmuch as the concrete of a roadway ex pands and contracts at opposite sides of the 40 transverse joints therein and as the present in vention is more particularly intended for use in tering vrecesses of the lugs 2|, 22 and through the holes 20, the filler I3 having been preformed with holes to receive said bolts, although the bolts may be driven through the material of the 40 tenings or connections, which are used for as filler if it is made of the usual material. The heads 23 of the bolts preferably engage the lugs 22, while the threaded ends of the bolts pass sembling the male and the female members and through the member I6 and project suiliciently transmitting loads across such joints, the fas 45 during the installation of the involved parts, are of such a nature that after the concrete has set and hardened and expansion or contraction oc curs, the fastenings or connections will be ren dered useless; that is, they are temporary con 50 nections not int-ended to resist expansion or con ~ traction, and may be as shown, described and so as to receive the nuts 26. The nuts are then 45 tightened up so as to ?rmly and positively tem porarily connect the male dowel I4, I5 and the female member I8. The longitudinal axis of the female member I8 will then coincide with the longitudinal axis of the male dowel I4, I5. An other unit of the so assembled parts is then claimed in my aforesaid copending application. _ mounted in the desired spacial relation along Preferably,the female member I8 and its parts the filler I3 and it is preferred that the parts are made of one malleable iron casting, and such of each assembled unit be in reverse relation to 55 is preferably the case with respect to the male the adjoining assembled units, so that the units 55 member and its parts. When these members are along the length of the filler will alternate, that is, the anchoring shanks or stems I5 will alter made of malleable iron, there will be less cor rosion than that of any known joint supports, nately extend in opposite directions and simi as the others are usually'all steel or other metal larly the female members I8 will alternately 60 or pressed steel and some part thereof is liable extend in opposite directions. 60 After assembly of the joint supports on the to rust easily and lose its necessary strength. The dimensions of the parts may be as follows: The entire length of the dowel type of male mem ' her seven inches, the length of the male member 65 proper I4 three inches and the length of the anchoring shank or stem three and three-quar ter inches, with the thickness of the ?ange I6 a quarter of an inch or more; the diameter of the 70 male member proper one'and one-half inches, the diameter of the anchoring stem or shank ?ller, one man can handle the same and place the ' ?ller I3 in desired position upon the sub-base I 0 to de?ne the ultimate transverse joint to be formed in the roadway. After the joint sup ports have been ?rmly united with the filler, such handling will not disturb the joint supports, ‘inasmuch as the two members of each pair or set will be prevented by the bolts 24, 25‘ from twisting with respect to each other and from getting out of alignment with each other. The building of three quarters of an inch and the diameter of the . the concrete. roadway is then proceeded with in member I6 two and one-half inches; the length the usual manner so as to provide concrete slabs of the female member three and one-quarter’ II , l2 at each side of the joint between them,v The pouring of the concrete to provide each slab 75 75 inches and its diameter two inches. ‘These di 3 2,110,738 will not shift the members of the joint supports from their assembled ‘relation on the filler l3. When any two adjoining slabs have been made and the concrete has set and hardened, the joint supports will perform their required functions in spite of the presence of the connecting bolts 24, 25 inasmuch as when the concrete contracts, the temporary fastenings will be broken, as by the stripping of the nuts 26 from the threaded ends 10 of the bolts, whose threads and the threads of the nuts may be slight enough and the hold weak enough to permit such functioning. Should the concrete expand, the pressure of say slab I2 against the heads of the bolts will force the 15 threaded ends of the bolts through the nuts, as the held there is weak. In the case of either contraction or expansion of the concrete slabs, the improved joint supports will be telescoped by the movement of the parts in one or the other 20 direction, and the load on one slab will at the same time be transmitted to the other slab, so that the adjoining ends of the slabs will not rise one above the other, due to the fact that neither of the members of the pair of joint supports can 25 have any relative transverse movement due to the preferred snug yet sliding ?t between the two members of the pair. The tendency to shearis ferred to, as will be obvious to those skilled in the art without departing from the scope of the appended claims. What I claim as new is— 1. In a road joint support, the combination of a male member and a female member, both of dowel type, which slidably inter?t and are adapted to be anchored in adjacent slabs of a roadway, the entering portion of the male mem ber being integral with, in line with and of 10 greater diameter than the anchorage portion of the male member to reduce the possibility of shearing the male member across the inner end of such entering portion, which end passes across 15 the joint between the slabs. 2. A‘ male member of a road joint support, adapted to cooperate with a female member and comprising‘ an’ anchoring shank and. an elon gated hollow portion at one end of the shank and integral therewith, the shank and hollow 20 portion forming a dowel, and which hollow por tion is adapted to pass through a joint ?ller and is of greater diameter than the shank to re duce the possibility of shearing the male member 25 across the inner end of such portion. 3. A female member of a road joint support having a tubular portion for receiving and con minimized because of the increased resistance necting with a male member of the support and thereto by the preferred construction of male dowel, which is strongest just where the strength having bolt receiving lugs at the outside of its tubular portion, and located at opposite sides 30 thereof, there being a pair of such lugs at each is desired. The lugs 22 on the female member being then fully embedded in the concrete may aiford su?i cient anchorage for the female member so that the lateral projections l9 thereof may be omitted or reduced in size. If desired, graphite may be . introduced between the sliding surfaces of the two members l4 and, I8 so as to lubricate the . parts. In Fig. 5 a slight modi?cation of the male 40 member proper is illustrated in which such mem ber 21 is still hollow, but is cast with a reinforc ing web 28 extending in a diametrical plane thereof, which is preferred to be vertically of 45 the roadway when-such modi?ed construction of male members are used. Obviously the invention is susceptible of other modi?cations and adaptations than those re side spaced apart along the tubular portion and the lugs of each pair being hook-shaped and hav ing the recesses under the hooks opening in op posite directions, such lugs adapted for additional 35 connection with such male member. 4. In a road joint support, the combination of an integral male member and a female member for anchorage in adjacent slabs respectively of a roadway, the male member being enlarged in 40 cross section beyond its midlength to provide thereat greater shearing resistance when ex tended across a joint filler, and the male member having‘ a peripheral shoulder, located at the in ner end of such enlargement, adapted to abut the joint ?ller. . FRANK 0. PARKER.