US2409273A - Refrigerator car drip pan - Google Patents

Description

Och 1946. V c. R. HAMILTON mu. 2,409,273

v REFRIGERATOR CAR DRIP PAN Filed Sept. 4, 1943 Tlcll- INVENTORS (2425/1/ 2- A? 641/): mm

wyz-J 474 6.

Patented st. 15, 1946 UNITED STATES PATENT OFFICE REFRIGERATOR CAR DRIP PAN Clarence R. Hamilton, Roseville, and James King,

Glendale, Calif., and James D. Baker, Winnetka, 111., assignors to Johns-"Vlanville Corporation, New York, N. Y., a corporation of New York Application September 4, 1943, Serial No. 501,264

Claims. 1

The instant invention relates to improvements in refrigerator cars, and, more particularly, to an improved drip pan construction for cars of this type and to a combined drip pan and floor construction.

A principal object of the invention is the provision of a drip pan constructed of a flexible, nonmetallic, waterproof material, particularly for use in refrigerator cars provided with flexible floor crushed slate or sand. A further object of the instant invention is the provision of a pan construction of the type referred to above which include integral means forming a waterproof joint with such laminated floor coverings.

Another object of the invention is the provision of a drip pan of the type referred to, which is formed of a single blank which may be readily assembled into pan form either at the factory or on the job.

A still further object of the invention is the provision of a pan as described above, composed of laminated, bitumen-impregnated, flexible sheets and including an extending portion or flap adapted to form a waterproof joint with a laminated floor covering.

Our invention will be more fully understood and further objects and advantages thereof will become apparent when reference is made to the more detailed description thereof which is to follow and to the accompanying drawing, in which:

Fig. 1 is a fragmentary, sectional view taken through the end portion of a refrigerator car, illustrating a part of the wall structure, the drip pan, and a portion of the floor;

Fig. 2 is a plan view of a blank employed to form the. drip pan of the instant invention;

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

Fig. 4 is a perspective view of the blank of Fig. 3 in partially assembled condition.

Referring now to the drawing, our invention will be described in connection with a refrigerator car of generally conventional construction. Thus, there are shown the usual car framing forming a surfacing 30. In accordance with the 2 sheathing overlying the insulation l0 at the end of the car, and a tongue and groove wooden flooring [6 extending across the width of the car overlying insulation l2 and supported on suitable sills (not shown). Flooring I6 is continued to a bearing rail 18 for the bulkhead separating the ice compartment from the lading compartment.

Between bearing rail l8 and the end of the car, space is provided for the drip pan which may be supported on a sub-flooring 22, compris-' ing, for example, a relatively thick plywood or the like.

Referring particularly to Fig. l, the covering for the floor over the main portion of the car is illustrated at 24 and comprises a suitable laminated material. more lower layers 26 of a fabric saturated with a bituminous material, such as asphalt, and an upper layer 28 of a heavy felted material likewise saturated with a bituminous material, such as asphalt. The layers of felt and fabric are firmly cemented together with asphalt or the like. It will be understood that, although only two layers are shown, the floor may be built up of any suitable number of layers to provide the desired resistance to deterioration and damage when the.

car is in use. The top felt layer preferably carries an asphalt coating in which is embedded or partially embedded a fine sand or crushed slate invention, the lowermost layer or layers 26 are stopped a substantial distance from the edge of bearing rail l8. The upper layer 28 of the floor covering projects over the lower layer as illustrated in Fig. 1, but also ends an appreciable distance from the edge of the bearing rail adjacent the drip pan space, the layers together forming one half of a shiplap type joint.

The drip pan, in accordance with the invention, is formed preferably from a single blank, as illustrated in Figs. 2, 3, and 4, and comprises a lower lamination of a fabric or felt saturated with a bituminous material, such as asphalt, the lamination extending continuously throughout the blank. The fabric used for this lamination may be an ordinary cotton duck of light weight and coarse weave which has been thoroughly saturated in the bituminous material, or may be a.

similarly saturated felt, such as a rag felt, asbestos felt, or the like.

The blank is cut to define a bottom wall 32, side Walls 34 and 36, end walls 38, securing flaps 40, and a joint portion or flap 42. Secured over the bottom, side, and end wall portions of the lower members, layers of insulation [0 and I2, an inner lamination are separate elements 44, 46, 48, and

Preferably, it consists of one or 50, composed preferably of felted material of relatively heavy weight, impregnated with asphalt, and carrying on its upper surface an asphalt coating in which is embedded or partially embedded a fine mineral grit, such as fine sand. The material is preferably the same or similarto that employed for .the outer layer of the main floor covering. Elements 44 to 50 are secured to the lower lamination by a suitable adhesive, preferably asphalt, or other bituminous material, and are spaced from one another a distance such that when the blank is folded into panform,the inner surfaces of the pan are defined entirely by the outer faces of elements to 50. Element 50 is extended, as illustrated in Figs. 2, 3, and 4, over a substantial portion of the length of flap 42 to form therewith one half of a shiplap' typejoint.

As previously pointed out, the lower lamination of the blank is preferably one integral piece of material. However, in the event material of the necessary dimensions is not available, separate pieces may be abutte'd and the jointcovered and secured by the overlying elements. Likewise, if felted material is not available in sufficient size to form the elements, particularly the longitudinally" extending elements 64', 48', and 50', they may be made in two sections with the joint between section's staggered with respect to any joint in the lower lamination.

In assembling the pan, the walls are folded into Vertical position and held by flaps lfl, which are folded over and adhesively secured, as by an asphalt or the like, to the outer faces of the end walls. Flap 42' and the associated portion of element 50 are then bent at an angle to the side wall, as illustrated in Fig. 4. In view of the relatively great thickness of the element, suitably the material may be heated to soften the asphalt before the bending" takes place to avoid cracking along theli'ne of bending.

The pan, after assembly of the blank, isinserted in the space provided adjacent the end of therefrig'erator car, and flap 42 placed to underlie the extending portion of the upper'la'yer of the floor covering, as shown in Fig. 1. As will be understood, the half joints on the pan and fiber covering are proportioned so that the edge of element 50 the edge of the u per layer of the floor, covering 28 lying in abutting. relationship,

and likewise the edge of flap 4.2 and the edge of the underlying lamination of the floor covering, lie in abutting relationship whereby a shiplap joint is' formed. The overlapping portions at the joint are secured together by a suitableadhesive, such as asphalt. Although in the above explanation the floor covering has been described as having been first laid, the opposite may be the case and the drip pan first positioned and the floor coverin then laid to complete the joint therebetween. An inner liner of the ice chamber, as illustrated at 52, is preferably extended to overlie or partially overlie the side and vertical walls of the p'an, as shown in Fig. 1.

' Having thus described our invention in rather full detail, it Will be Understood that these details need not be strictly adhered to, but that numero'us' changes and modifications will suggest themselves to those skilled in the art, all falling within the scope of the invention as defined by the subjoined claims.

What we claim is:

1. A refrigerator car construction comprising a floor covering, a drip pan at an end of said car, said pan and floor covering being formed of laminated, bitumen-impregnated sheets and a lapped joint between said pan and covering and comprising integral portions thereof.

2. A refrigerator car comprising a floor covering, a drip pan at an end of said car, said floor covering comprising laminated, bitumen-impregnated sheets, and said drip pan including a panshaped member composed of laminated, bitumenimpregnated layers having an integral portion of one of said layers underlying a portion of said floor covering.

3. A refrigerator car comprising a floor covering, a drip pan at an end of said car, said drip pan comprising a pan-shaped member including a laminated bottom element, and laminated side and end elements integrally secured to said bottom element by a lamination, said lamination having a portion underlying a portion of said floor covering.

4. A refrigerator car comprising a floor covering, a drip pan at an end of said car, said drip pan comprising a pan-shaped member formed from an integral blank and including a continuous lamination forming. in partthe bottom, side, and end walls of said pa'n, said lamination inolud. ing a strip underlying a contiguous portion of said floor covering; and separate elements formed of asphalt-impregnated and coated felt overlying said continuous lamination at" the bottom, end,

and side walls of said panand forming the inner surfaces thereof, one of said elements including a portion extending into abutting relationship With said floor covering.

5. A refrigerator car comprising a floor covering, a drip pan at an end of said oar, said drip pan an integral blank and including'a continuous lamination forming in part the bottom, side, and end Walls of said pan, and said lamination" including an extending portion underlying a contiguous portion of said floor covering and also including flaps extending from opposite vertical walls of said pan and adhesively secured to the other walls, and separate elements formed of asphalt-impregnated and coated felt overlying and adhesively secured to said continuous lamination at the bottom, end, and side walls of said pan, one of said elements having an extension adhesively secured to the extending portion of said lamination and in abutting relationship with said floor covering.

6-. A refrigerator car comprising a' floor covering, a drip pan at an end of'said car, said drip pan comprising a pan-shaped member formed from a single blank and including a continuous lamination forming in part the bottom,side, and end walls of said pan, said lamination including an extending portion underlying a contiguous portion of said floor covering, and also including. flaps extending from opposite vertical walls of said pan and adhesively secured to the other walls, and separate elements formed of asphaltimpregnated'and coated felt with a granular sur.. face material partially embedded in said coating overlying said continuous lamination at the bottom, side, and end walls of said pan and forming the inner surface thereof, one of said elements including a portion extending into abutting relationship with said floor covering.

7. A drip pan for a refrigerator car or thelike,

said pan comprising a pan-shaped member innated and coated felt overlying said continuous lamination at the bottom, end, and side Walls of said pan, one of said elements covering said joint strip for a portion of the length thereof.

8. A drip pan for a refrigerator car or the like comprising a pan-shaped member including a continuous lamination forming in part the bottom, side, and end walls of said pan, securing flaps extending from opposite vertical walls of the pan and adhesively secured to the other vertical Walls, a joint strip extending from one of said walls, and separate elements formed of asphalt-impregnated and coated felt overlying said continuous lamination at the bottom, side, and end Walls of said pan, one of said elements covering said joint strip for a portion of the length thereof.

9. A drip pan for a refrigerator car or the like comprising a pan-shaped member including a continuous lamination forming in part the bottom, side, and end Walls of said pan, securing flaps extending from opposite vertical walls of the pan and adhesively secured to the other vertical walls, and a joint strip extending from one of said walls, and separate elements formed of asphaltimpregnated and coated felt overlying said continuous lamination at the bottom, side, and end walls of said pan, and granular surfacing material partially embedded in the coating of said separate elements, one of said elements overlying and adhered to said joint strip for a portion of the length thereof.

10. A drip pan for a refrigerator car or the like comprising a pan-shaped member formed from a single blank and including a continuous lamination of asphalt-impregnated felt forming in part the bottom, side, and end Walls of said pan, securing flaps extending from opposite vertical walls of said pan and adhesively secured to the other vertical walls, a joint strip projecting from one of said vertical Walls, and separate elements formed of asphalt-impregnated and coated felt overlying said continuous lamination at the bottom, end, and side walls of said pan and forming the inner surface of said pan and a granular surfacing material partially embedded in the coating of said elements, one of said elements overlying and adhered to said joint strip for a portion of the length thereof.

CLARENCE R, HAMILTON.

JAMES KING.

JAMES D. BAKER.

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