US2363524A - Gasket construction - Google Patents

Description

Nov. 28, 1944. A. w. 1.. HARTBAUER 2,363,524

GASKET CONSTRUCTION Filed March 24, 1941 2 Sheets-Sheet 1 4 /NI/E'NTOE.

Fm. Z5

2 1944. A'. w. L. HARTBAUER D 3,524

GASKET CONSTRUCTION Filed March 24, 1941 2 Sheets$heet 2 /NI/E/Y TOP.

Patented Nov. 28, 1944 UNITED STATES PATENT OFFICE u a l l 2,ss,524

GASKET oo s'rnIio'rIoN, August w. L. Hartbauer, Chicago, Ill. Application March 24,1941, Serial No.1 384,917 l Claims. (01. -69) This invention relates to a gasket and means for joining said gasket units of twoor more pieces, preferably adapted for applicationto 'rail- 1 way car hatch and door arrangements.

i The construction herein shown is an improvement on that shown in my prior Patent No.

2,189,795, dated February 13, 1940. The features of improvement are in the shape and disposition of the reinforcement and in its relation to the corners of the gasket. Much is added. to the adaptability of the gasket for general use, the features of simplification of application flexibility in use being pronounced.

As I pointed out in my said prior patent, the

hatch closure and door arrangements in general these forms of closures it is absolutely necessary to provide some form of perimeter edging that will yield, to compensate for variance in construction, to insure the seating of the plug or closure in ultimate closed position in both arrangements. The yielding edges of the hatch plug are usually formed by upholstering the edges. over a foundation of curled hair or the like. The yielding edges of the door parts are usually formed and of,

15 use in railway cars employ the plug design. In 1 with a wood slab spring actuated foundation and door parts or the bar body parts; It isnecsattachment, and, in an annularly complete gasket :such as used on hatch doors, in the matter of flexibility at the corners orarigles. Thesefeaturesv are improved in the constructionhere disclosed. 1

In the drawings: i

Fig. 1 is a plan view showing'the contour of the cloth which covers thecore and forms the outer surface of the gasket and which shows the bifurcated end of the cloth and the slits employed for angle corner assembly. i v 1 Fig.2 is a plan .view showing the contour of the cloth which covers the core "and forms the outer surface of the'gasket and shows the tabs and slits employed for square corner assembly. Fig. 3 is a plan view showing the contour of sary that as the door arrangement units are 7 the sponge rubber cores for angular .corner assembly.

Fig. 4 is a plan view showingthe rubber cores with butt ends for square corner assembly.

Fig. 5 is an enlarged .plan view showing the butt end of the spongerubber cores with the integral triangular shaped corner filler portion moved into position forassembly. i

Fig. 6 is a plan view showing the assembly of the cloth and the sponge rubbercores for angle type of corner assembly of the units.

Fig. '7 is a diagrammatic end viewshowing two sponge rubber cores assembled on the covering cloth. 7

.Fig. 8 is a diagrammatic end View showing an alternate method of usingohesponge rubber core assembled on thecloth covering.

Fig. 9 is a plan view showing the assembly of the cloth and the sponge rubbercores for square type corner assembly. i t

Fig. 10 shows a section of the preferred form of wire reinforcing used in thegasket units. Fig. 11 shows a section of an alternatekind of perforated metal or composition reinforcing that may be used in the gasketunits.

, Fig.';12 shows a section of still anotherkind of expanded metal reinforcing which may be used.

in the gasket units.

Fig: 13 is a. diagrammatic end elevation show- Fig. 14 is a diagrammatic end elevation showing the folded gasket sections completely formed with the metal reinforcement encased by both edges of the cloth.

Fig. 15 is a diagrammatic end elevation. showing the alternate method ofencasing the reinforcing member by utilizing one marginal portion of the cloth and encasing the edge of the core with opposite marginal'cloth portion.

Fig. 16 is a diagrammatic end elevation showing the encased reinforcing member Fig. 15 moved into contact with the edge of the gasket.

Fig. 17 is a plan view of the gasket unit for angle corner assembly showing the metal reinforcing ,by dash lines. r i

Fig. 18.is a plan view. of the. gasket unit for i square corner assembly showing the metal reinforcing by dash lines.

Fig. 19 shows. the contour andthe slits in the cloth corner gusset with either angular or square corner assembly. l i

Fig. 20 is a plan view of thean'gularcorner assembly lookingat the contactsurface of the notches 5, 6, 1 and 8.

Fig. 24 is a cross sectional view 01111116 B--B- in Fig. 20 and shows the flexing corner section encased by the gusset Fig. 19.

- treated surface of the cloth, thereby forming the flat sections of the gasket units as shown in Figs. 6- and 7.

Fig. 8 shows an alternate form of gasket unit section in which only one rubber core 30a is used, the contour being the sameas the core 30 g in Fig. 6. The thickness of the core 30a is equal to the combined thickness of the cores 29 and 31] Fig. is a plan view of a hatch closure gasket assembly showing four gasket units in applied position.

Fig. 26 is .a cross sectional View on line C,C Fig. 25 and shows ethe flexing of the gasket. I

Fig. 27 is a cross sectional view showing the gasket'in service position as applied to a refrigerator car door arrangement.

Fig. .28 is an isometric cross sectional view of the cloth covering cemented together with the metal reinforcing therebetween on the line A--A in Fig. 14.

Many of the features disclosed herein are similar to those shown in my prior patent and not illustrated in order to clarify the features of novelty.

In constructing the gasket units of the invenwaterproofed on one side only with cementitious or other suitable material, and then cut to the width and contour preferably as shown in Figs. .1 and 2. The cloth covering I for the angular .tion the cloth covering 1 is suitably treated and corner assembly is provided with a square or butt end 2. The parallel edges or marginal portions 3 and 4 arerelatively long and are gauged .as to their width and length by the dimensions of the The oppositeend of the cloth covering l is bifurcated and slit to form the tabs .9, I0, I],

I 3 also constituting relatively short marginal portions of the cloth covering 1. The .short marginal portions 9 and 13 are in longitudinal alignment with the long portions 3 and 4.

' gitudinal alignment with the long marginal portions 16 and I1.

Gauging the Width of the parallel edge portions 3 and 4 as shown in Fig. 1, and the parallel edges 16 and I1 shown in Fig. 2 is necessary to provide integral cloth covering to encase l2 and 13 the sections 9 .and

the reinforcements shown in Fig. 10 and those shown Figs. 11' and 12. The length of the reinforcingwire is determined by the slots 5, 6., 1 and Bin Fig. l and by the slots l8, I9, 20 and 22 in Fig.2. Fig. 3 shows the sponge rubber cores 29 and 30 for the angular type ofcorner assembly, each provided with an integral triangular shaped corner filler tab 26 also shown in Fig. 5 and is adapted to be moved to theposition indicated by I full lines in Fig. 5 and in alignment with the butt end 21 of the cores 29 and3il to facilitate the assembly of the gasket units. The opposite ends .shown in Fig. '7. The core 30a is cemented to the cloth I thereby forming the flat section of the gasketunit as shown in Fig. 8.

Fig. 4 shows the sponge rubber cores 31 and 32 for square assembly 'with butt ends 28. One sideof the cores 3| and-32 is coated with cement la and the cores are placed on the cloth l4- Fig. v9 contacting the treated surface of the cloth M, thereby forming the flat sections of the gasket units as shown in Figs. 'Tand 9.. i a

To assemble the gasket units .31 and .38, fold the assemblies Figs. 6 and 9 until the surfaces of the rubber cores 29 and 3.0 in Fig. 6 and the surfaces of the cores 3| and 32 in Fig. 9 are in contact as shown Fig. 13.

The assembly is continued by placing the angular formed reinforcing 33 Fig. 1 0 or other suitable reinforcements such as 33a Fig. .11 and .331) Fig. 12 with the flange 34 in contact with the edges of the cores 29 and 30 and the cores 3| and 32 shown in Figs. 6 and .9. The flange 35'of the reinforcing 33 Fig. 10 contacting the .marginal cloth portions 3 and I6 shown Figs. 6 and 9 and the assembly as shown Fig. 13.

To complete the gasket units .31 and 38 fold the marginal edges 4 and 11 Figs. 6 and 9 to encase the reinforcing wire .33 and forming the attachment flange 36 as shown in Fig. .14.

In the alternate method shown in Figs. .1 5 and 16 fold the cloth assemblies shown in Figs. 5 arid 9 until the surfaces of the rubber. cores 2.9 and 30 Fig. .6 or the rubber cores 3] and 3.2 are in contact as'shown in Fig. .15. Ehcase the edges of said cores with the marginal edge 4 in Fig.6 or marginal edge 11 in Fig. .9 and join said marginal edges with the marginal edges 3 and B in Figs. 6 and 9.

To complete the assembly encase the angular shaped reinforcing .33 with the marginal edges 4 Fig.5 or 1'7 Fig. .9 and then folding the .marginal edges 4- or I! Figs. 6 and .9 to place the encased reinforcing flange 34 in contact with the edge of the cores as shown Fig. 16.. a

The exposed surface of the cloth and the reinforcing wire having been given a coat of cement la will :bond and amalgamate these parts together with the reinforcing wire as pressure .is applied and as shown .Fig. 2.8. i

The meshes of the reinforcing wire .33 offer unrestricted opposed contact surface of the cloth I or 14 as a means of encasing said wire reen forcement 33 within the structures as shown Figs. 14,16 and-.28, completing the gasket units 31 Fig. 17 and Fig. 18 for unit 38.

In'order to join the gasket .units 31 Fig. 17 and alsothe units 38 for angular corner assembly Figs. 20 and 21, or square corner assembly F gs. 22 and 23,.the butt end of one unit 31 is joined with the edges of the other cement Ia having been applied to the respective surfaces in ad;-v vance. The parts are then joinedtogether to form the joint 39 shown in Figs. 20 and 22. To

completethe assembly of the angle corner type; shown Figs. 20 and 21, the tabs 9 and 13 are brought to binding contact with the edges Ofl the units and also a portion of the edges of the rubber. cores. The flange I is joined with the flange l2 in Fig. 24 forming the flange 40 which,

encasesa portion of the tabs 9 and i3 and also the ends of the cores as shown in Figs..20 and 24.

The inner angular edges of the cores, are encased by a gusset 4|, Fig. 19 by joiningthe tabs appliedto the peripheral edge 53 of the door section 54 with nails 52. The peripheral edge 55 of the door section 56gcontacting the gasket 45 or unit thereof in the full closed position of the I doors as shown;

WhatI claimand desire to secure by Letters Patent is:

42 with the edges of the units 31 and folding the gussets 4| in line with the slits 43 the tabs 44 I and the folded portion are'then joined with the contact surface of the units whereby to seal and reinforcethe corner assembly. To complete the square corner assembly Figs. 22 and 23 the tabs 23, 24 and 25 are brought intobindingcontact.

with the surfaces and the edge of the assembled units. The inner edges of the cores are encased by the gusset 4| by joining the tabs 42 with the edges of the. units and folding the gusset. 4|

in line with the slits 43 the tabs 44 and the folded portion are then joined with the contact surface of the units whereby to seal and reinforce the corner assembly. 4 i

The assembled gasket generally designated as. 45 is completed when the unit sections are joined at the corners as shown Fig. 25.

In some instances and especially pertaining to door applications, assembly of the units may not, be required, in these instances the units are appliedseparately and adapted to move into. contact as the door is moved to the fully closed posi- 1. ma gasket, the combination of. a core of resilient material, metal reinforcement, L- shaped in cross section, one leg lying against a side edge of said core and. the other leg extending sub-. ;stantially parallel to and in a plane with one face of said core, and fabric enclosing said core.

and reinforcement and adhesively secured to the parallel leg of said reinforcement.

2. In a gasket, the combination of a flat sponge I rubber core, an L-shaped metal reinforcement, one flange of the reinforcement lying against one side edge of the core and the other flange lying tion, the rubber core of the gasket section yields ing to compensate for structural variance to insure proper seal.

Figs. 25 and 26 show the hatch closure in which the frame sections 45 are joined together at the corners in a substantial manner. The frame sec-I tions 46 are shaped to provide a limiting surface 41 and the gasket bearing surface 48. .The assembled framesections are secured to the metal cover 49 with bolts or screws, the lining I 50 is nailed to the framememberslfi The resultant space 5| between the frame members and the plate 49 is filled with suitable insulating material. I l

The assembled gasket 45 is applied to the bear- 1 ing surface 48 and secured thereto by a series of nails 52 in the retaining flanges 36, best shown in Fig. 26.

The extending flange 34 of the wire reinforcing.

best shown Fig. 14 is. rigid and contacts the inner edges of the gasket rubber core sections to I i hold the gasket in nominal contact with the surface 48 to which the gasket 45 is fastened best shown in Fig. 26and provides the resistance which of the gasket. Thereby preventing loosening. of .the fastening element or damage to the gasket in the service for which it is designed.

In Fig. 27 the gasket 45 or a unit thereof is prising metal strips of angular cross-section, one l the other flange projecting laterally inwardly 3 parallel to and substantiallyin the plane of one flat side ofthe core and extending laterally therefrom and fabric enclosing said core and rein forcement whereby when said gasket is secured to a support by fastening meansthrough said lat- .eral flange, one edge of said gasket is free.

3. In a gasket, the combination of a core cornposed of a plurality of sections of sponge rubber, a section. of fabric surrounding said core and having extended marginal edges, an angular metal reinforcement, one flange of .the angle 1y: ing against a side edge of thecore and one flange lying parallel to and substantially in the plane of a side of the core and projecting laterally therefrom, the marginal edges of said fabric overlying said reinforcement and adhesively secured thereto and to each other.

4. In an annularly complete gasket, the combination of a core composed of abutting sections, combined reinforcing and attachmentstrips exv tending throughout the length of the straight portions of the gasket, said reinforcement comfiange lying against an inside edge of the gasket,

parallel to, the bottomface of the gasket, and

fabric encasing said core and reinforcement, said reinforcement being interrupted at the corner angles of the gasket whereby to insure freedom of movement of the gasket at such corners.

5. In an annularly complete gasket having straight portions and angular portions, the coinbination of a core-composed of abutting sections,

combined reinforcing and attachment strips ex- I tendingthroughout the length of the straight portions of the gasket, said reinforcement comprising metal strips of angular cross-section, one flangelying against an edge of the gasket, the

other flange projecting laterally parallel to. the bottom face of the gasket, and fabric encasing said core and reinforcement, extending portions of said fabric being in overlapped secured connec-.

tion at the corner angles of the gasket providing a connection for the core, and said reinforcement being interrupted. at the corner angles of the gasket whereby to insurefreedom of move ment of the gasket at such corners.

AUGUST W. L. HARTBAUER,

Images