Патент USA US2136869код для вставки
15, J. Mack. SPEARS ' 291361869 COLLAPSIBLE ASPHALT MACHINE Filed Oct. 22, 1957 _ Q2 WДж a " r? 17215 _ Z. , ~3Д EQLELJM f 15 \lv v 2 Sheets-Sheet l ? I l 332/? J: ? 26 Patented Nov. 15, 1938 2,136,869 UNITED STATES , PATENT OFFICE. I ' ?2,136,869 COLLAPSIBLE ASPHALT MACHINE Joseph MacKay Spears, Washington, D. 0. Application October '22, 1937, Serial No. 170,497 ' 2 Class. 1(01. 259-164) V This invention relates to?asphalt machinery crushed stone and asphalt, the ?mixing mill here and has special reference to portable asphalt mixing machines. ? In the mixing of asphalt material such as is 5 used in the building of roads and the like?it is common to take weighted quantities of broken stone and asphalt and pass them through? a mixing device such as a pug mill in order that the stone and asphalt may be thoroughly mixed. In stationary plants the stone and asphalt are 11 usually stored in elevated bins or hoppers from which they are gravity fed to weigh boxes lo cated above and emptying into a pug millor other like device. The apparatus thus is neces sarily of considerable height and cannot, unless special provision is ?made for the purpose, be transported on railroad cars- or the like. It is one important object of the present in vention to provide a novel arrangement of port 20 able apparatus of this character which is so con structed that it may be carried from place to place on ordinary railroad ?at-cars, the appa ratus being telescopically collapsible for trans portation. 25 A second important object of the invention is to provide a portable, ?at-car mounted hopper having a frame so constructed and arranged that the hopper may be held raised when the appa ratus is in use and lowered when being trans 30 ported from one location to another. shown being of the usual type of pug mill. No attempt has been made to show the construction of the interior of this mill but it is to be noted that the mill has an open top l3. Surrounding the mill is a lower frame including a series of vertical angle iron corner?members l4 arranged at the corners of a rectangle and having their lower ends securely anchored to the platform It. The upper ends of the members l4 are braced 10 together by girt members l5. An upper frame is also provided which has four angle iron corner members I6 slidably mounted within the angles of the members It as clearly shown in Figure 3. This. frame is telescopically ?arranged with re~ spect to the lower frame. Through the lower ends of the members l6 and the upper ends ?of the members l4 extend bolt openings which may be brought into alinement upon the upper frame being raised to its upper position and bolts I?! 20 are then removably ?tted in these openings to hold the frames releasably together. Fixed to the upper ends of the members 16 is the upper rectangular portion I8 of a hopper [9 having a downwardly extending tapered body 20 25 which is attached thereto by means of bolts 2|. The bottom 20 is open at its lowermost point and is provided with a suitable closure 22. Connected to the girt members I 5 are plates I5a to which are bolted the lower ends of sup 30 ports I?a having plates 161) secured to their up With the above and other objects in view, as will presently appear, the invention consists in general of certain novel details of construction and combinations of parts hereinafter fully de tangular hopper portion 18 by certain of the bolts 2|. and particularly pointed out in the appended posed between the hopper l9 and the mill l2 to 35 scribed, illustrated in the accompanying drawings claims. . In the accompanying drawings like characters of reference indicate like parts in the several 40 views, and Figure l is a side elevation of a portion of a portable asphalt mixing plant and showing those parts which relate particularly to the pres ent invention in position for use, 45 Figure 2 is a similar view but showing the parts in position for transportation, and Figure 3 is a fragmentary horizontal section on the line 3-3 of Figure 1. In the embodiment of the invention illus trated in the accompanying drawings there is shown a platform l0 consisting of a ?at-car body of the usual railroad type and this platform is supported in the usual manner on trucks ll. Mounted on the platform is a mill l2 suitable 55 for mixing aggregates and binders such as per ends, which plates are secured to the rec When set up for use a weigh box 23 is inter 35 receive aggregate from the hopper l9, weight the same and then discharge it into the mill I2 when the closure 22 is placed in open position. A sim ilar weigh box 24 receives charges of asphalt 40 binder through a pipe 25 from a suitable supply tank 26 which, in the present instance, is mount ed on a second ?at-car 28 adjacent the ?at-car Ill. From the weigh box 24 the asphalt binder is emptied into the mill l2 to be mixed with the 45 aggregate. An elevator 21 conveys aggregate to the hopper H] from a suitable source of supply which, in the present instance, is the discharge end of a rotary drier 29 mounted on the car 28. When in use the various parts of the apparatus are in the position shown in Figure 1, but the height of the device is then such that it cannot be transported by rail. Because of the structure illustrated and described herein, however, it may be collapsed vertically so as to be readily trans 55 2 _ m A A 2,136,869 ported, which collapsing operation is accom plished in the following manner: The weigh boxes 23 and 24 and the elevator 21, which are removably connected to the main struc ture are ?rst detached and stored on the car 28. The lower ends of the braces l'6a are then un bolted from the plates l5a, and the plates l6b are unbolted from the sides of the hopper por tion H3. The bolts H are next removed from the 10 overlapping ends of the corner members l4 and I6, a suitable hoist, as indicated at l9a, being used for supporting the hopper [9 during that operation and for lowering the same, with its supporting frame, after the removal of these 15 bolts. This lowering operation is then'carried on until the lower portion 20 of the hopper rests within and is supported by the mill I2. This lower portion 20 is then disconnected from the hopper portion I8 by removing the remainder 20 of the bolts 2| after which the portion I8 is fur ther lowered by the. hoist, the supportingmem bers l6 sliding within the supporting members l4 until their lower ends rest on the platform IE]. The entire structure ?will then have been re 25 duced in height to such a degree as to permit of ready transportation, as shown in Figure 2. When restoring the parts to position for use, the foregoing operations will be reversed. 30 What is claimed is: 1. In a portable mixing apparatus for pro ducing asphaltic mixtures, a wheel supported platform, a mixing mill mounted on said plat form and having an open top, a hopper compris~ ing upper and lower portions alined vertically 35 above said mill and adapted to be moved into raised and lowered positions, a set of vertically disposed frame members ?xed to said platform in quadrilateral form about said mill, a second set of similarly arranged frame members slid ably engaging the ?rst set, said second set being ?xed to said hopper, and means to secure the second set in raised position to the first set, said hopper having its lower portion taperingly re duced to rest within the open top of the mill when the hopper is in lowered position, said hopper having its lower and tapered portion de tachably bolted to the lower part of the upper 10 portion whereby the upper and lower portions may be telescopically nested when the device is collapsed. 2. In a portable mixing apparatus for produc ing asphaltic mixtures, a wheel supported plat 15 form, a mixing mill mounted on said platform and having an open top, a hopper comprising up per and lower portions alined vertically above said mill and adapted to be moved into raised. and lowered positions, a set of four vertically dis posed angle irons ?xed to the platform at the corners of a rectangle within which said mill is located, said angle irons facing inwardly of the rectangle, a second set of fourvertical angle irons having the hopper ?xed to their upper ends, and ?tting within the angles of the ?rst set, and re leasable means connecting the lower ends of the second set to the upper ends of the ?rst set, said hopper having its lower portion taperingly re duced to rest within the top of the mill when the 3O hopper is in lowered position, said hopper having its lower and tapered portion detachably bolted to the lower part of the upper portion whereby the upper and lower portions may be telescop 35 ically nested when the device is collapsed. JOSEPH MACKAY SPEARS.