US1778270A

US1778270A - Sponge rubber

Info

Publication number: US1778270A
Application number: US336277A
Authority: US
Inventors: Thomas W Miller
Original assignee: Faultless Rubber Co
Current assignee: Faultless Rubber Co
Priority date: 1929-01-30
Filing date: 1929-01-30
Publication date: 1930-10-14
Anticipated expiration: 1947-10-14

Description

@rcfiw 14, 1930.. w MULLER 1,778,27Q

SPONGE RUBBER Filed Jan. 30/1929 2 Sheets-Sheet 1 Twas W, Mi 1.1 Q 2' gttozrzaesa @Cfi. 14, 1930. T, w M L 1,778,270

SPONGE RUBBER Filed Jan. 30. 1929 2 Sheets-Sheet 2 T'bogw Y3K Mil e 7 1 E113 5 jaw/MM,

g ttcrges Patented Oct. 14, 1930 UNITED STATES PATENT OFFICE THOMAS W. MILLER, OI ASHLAND, OHIO, ASSIGNOB TO THE FAUIIILESS RUBBER COI- PANY, O1 ASHLAND, OHIO, A CORPORATION OF OHIO sronen nuanaa My invention relates to sponge rubber articles, and to a process of making the same, and the principal object of iny invention is to provide new and improved articles, and a new and improved process, and in the drawings accompanyin this specification and forming a part this application I have shown, for purposes of illustration, certain forms which my invention may assume. In these drawings I Figure 1 is a perspective view illustrating two slabs of vulcanized sponge rubber,

Figure 2 is a perspective view of a composite slab formable from the two slabs of Figure 1,

Figure 3 is a perspective view of a bath sponge formable from the composite slab of -Figure 2, a

Figure 4 is a perspective view of a second composite slab formable from the slabs of Figure 1,

Figure 5-is a perspective view of a bath sponge formable from the composite slab of Figure 4,

Figure 6 is a fperspective view of a third composite slab ormable from the slabs of Figure 1,

Figure 7 is a perspective view of a bath sponge formable from the composite slab of Figure 6,

Figure 8 is a perspective view of a fourth form of bath sponge formable from the slabs of Figure 1,

I Figure 9 is a (perspective view of a powder puff constructe accordin to my invention Figure 10 is a section 0 the line 10-10 0 Figure 9,

Figure 11 is a perspective view of another form of powder pufi also constructedaccording to my invention, while .igure 12 is a section of the line 12-12 of Fi re 11.

escribing my invention as it is applied to bath sponges, I form two slabs of

vulcanized sponge rubber

21 and 22 as shown in Figure 1, each in a suitable mold and therefore covered on all sides with a smooth skin 23 enclosing a sponge rubber body 24, then I trim the

slabs

21 and 22 along the dotted hnes 25 to remove the peripheral margins 26, and then I split the

slabs

21 and 22 along the center lines 27. Obviousl this 'vesme four half slabs, two half sla 28 mm the slab'21 and two half slabs 29 from the slab 22, each half slab showing cut spon e on its four marginal edges and on one ace, and showing skin on its other face. Next I take two of these half slabs 28 and 29 and lace them together back to back, that is wit the two skin faces abutting, and I secure these two half slabs together in this osition in any suitable manner, for example by cementing them to etherwith a suitable rubber cement. Obvlously at this point I produce a composite slab equal in thickness to either of the original slabs but with the skin of the two faces of the original slab shifted to the center to act as a stiffener, and with cut sponge on all exposed sides and faces, and accordinglyin this way I have produced a spon e sheet having cut sponge on all expose surfaces, and I have done so without the waste which would be incurred by merely trimmin all surfaces of the

slabs

21 and 22, yet at tie same time I haveproduced a sponge sheet which because of the center stiffening resulting from the retention of the skins and the placing of the two skins in a position abutting each other actually is greatly superior at least for many purposes.

At the same time still another a'dvanta and result can be obtained; if the two sla s 21 and 22 are formed of different sponge rubbers, and if the composite slab is formed of one half slab 28 from the slab 21 and one half slab 29 from the slab 22, then the composite slab will be of one sponge rubber on one face andof another sponge rubber on the other face. For example, if the slab 21 is green color sponge rubber of coarse texture and t 30 may be cut as indicated by the dotted .jection extending from the lines 31 to form a plurality of bath sponges 32- as shown in Figure 3,;each having cut sponge on all surfaces, each strengthened by the centrally positioned skins 23, each having one portion colored" green and of coarse texture for rough cleansing, and each having a portion 34 colored blue and of fin texture for more delicate cleansing.

' Under certain circumstances it may be desirable to stiifen the article additionally to the stifi'ening resultingfrom the center positioning of the skins 23, and in such case I may interpose between the two half slabs 28 or 29 a sheet of

rubber

35 or 36 as shown in the composite slabs 37 and 38 of Figures 4 and 6, and in such event I may form the

rubberisheets

35 and 36 with utilitarian projections, for example, the rubber sheet 35 with a plurality of teeth 39 projecting along each-of the longitudinal edges of the composite slab 31, and the rubber sheet 36 with aplurality of tabs 49 projecting along each of the longitudinal edges" of the composite slab 38, so that when the composite slabs 37 and 38' are out along the lines 41 and 42 there will result the bath sponges 43 and 44 shown. respectively in Figures 5 and 7 and 9*: each similar to the bath sponge 34 of Figure 3 but provided with the central stifiening '

sheet

35 or 36 and with the functional pro- 2 sheet 35 or. 36, the sponge 43 with the points 39 suitable for various purposes such as cleaning finger nails. and the sponge44 with the tab 49 by which the sponge may be hung upon a suitable hook.

I nsome-instancesit may be desirable to provide a plurality of utilitarian projections on each individual bath sponge, and in such case I may cut the one half slabs 28 and 29' into blocks before they are assembled back to back and then assemble each pair of blocks .Qbackto back to secure thebath sponges 45 of Figure 8 wherein there is interposed between the green and blue portions 46. and 47 a, sponge rubber sheet 48 having autilitarian projection on each edge, thepoints 39 on each longitudinal edge and a tab 40 ori each end edge. Of course it will be understood that the projections may differ on the two sides, also on the two ends, and also that where only-two different projections are required that result may be accomplished withillustration I have sh out cutting the half slabs into individual blocks, for example, the half slabs will be cut into blocks large enoughfor four bath sponges, two each way, and one type of projection provided on one pair of opposite edges of the inserted sheet and the other type on the other pair of opposite edges of the inserted sheet, whereupon each individual bath sponge will be provided on one side with one type of projection and the one end with the other type of projection.

Of course it will be understood that the sponges of Figures 5 and 7 and 8 may be formed of one sponge rubber or of two sponge rubbers, whichever may be desired;

in the same manner as described in connection with the sponge of Figure 3. I

In the foregoing I have considered my invention as applied to bath sponge, but it may be applied to other articles, and by way of own my invention in Figures 9 through 12 as applied to a powder puff, in Figures 9 and 10 to a powder pufi' 49 comprising an upper blue portion 50 and a lower green portion 51 both of fine texture, strengthened only by the skin 52, and pro- .vided with a thin rubber tape 53 inserted between the two

portions

50 and 51 atone corner thereof to form a tab by which the puff 49 may be handled, while in Figures 11 and 12 I have shown a puff 54 comprising a loweneoarse texture green portion 55 and an upper fine texture blue portion 56 between which is interposed a stiflening sheet 57 provided with a tab 58. I

Of course it will beobvious to those skilled in the art that the various features enumerated in connection with the bath sponge may also be applied to the powder puff, also that some or all of the featureshere in disclosed may be applied to various other sponge rubber articles, and that in-one form or another the process herein above disclosed will be utilized in the manufacture not only of bath sponges and powder puflt's but of a wide variety of sponge rubber articles, accordingly it will be obvious that the embodiments of my invention herein disclosed are illustrative only, that my invention is not limited to those particular embodiments which I have dis closed herein.

I claim:

1. The method of forming'a sponge rubber article which comprises uniting two pieces of sponge rubber each formed by splitting a sponge rubber slab and 'from the abutting face of at least one of which the skinhas not been removed.

2. The method of forming a sponge rubber article which comprises uniting, against thetwo sides of a rubber sheet, two pieces of sponge rubber each formed by splitting a sponge, rubber slab and from the abutting face of at least one of which the skin has not been removed.

3. The method of forming a sponge-rubber article, which comprises: splitting a spongerubber slab, to form a split-slab sponge-rubber board, and superposin said split-slab board and another sponge-ru ber board, with skin on at least one of the abutting surfaces, to form an intermediate reinforcement 4. The method of forming a sponge-rubber article, which comprises: splitting a spongerubber slab,to form a split-slab sponge-rubber board, and superposing said split-slab board and another sponge-rubber board, with skin on at least one of the abutting surfaces, to form an intermediate reinforcement, and

with cut sponge on at least one of the opposite faces.

5. The method of forming a sponge-rubber article, which comprises: splitting spongerubber slab, to form split-slab sponge rubber boards, and superposing two such boards, with skin on at least one of the abuttingsurfaces, to form an intermediate reinforcement, and with cut sponge on at least one of the opposite faces. 7 i

6. The method-of forming a sponge-rubber article, which comprises: splitting a spongesignature.

THOMAS W. MILLER.

rubber slab, to form a split-slab sponge-rubber board, and superposing' said split-slab board and another sponge-rubber board, with skin on both the abutting surfaces, to form an intermediate reinforcement, and with cut sponge on at least one of the opposite faces.

A sponge-rubber article, comprising two sponge-rubber boards, superposed one on the a other, at least one being asplit of a spongerubber slab, and at least one having skin on its abutting face, to provide an intermediate reinforcement.

8.v A sponge-rubber article, comprising two sponge-rubber boards, superposed one on the other, at least one having skin on its abutting face, to provide an intermediate reinforcement, and at least one having cut sponge on its face opposite its abutting face.

9. A sponge-rubber article, comprising two sponge-rubber boards, superposed one on the other, at least one being a split of a spongerubber slab, at least one having skin on its abutting face, to provide an intermediate reinforcement, and at. least one having cut sponge on its face opposite its abutting face.

10. A sponge-rubber article, comprising two sponge-rubber boards, superposed one on the other, each being a split of a sponge-rubber slab, at least one having skin on its abutting face, to provide an intermediate reinforcement, and at least one having cut sponge on its face opposite its abutting face.

11. A sponge-rubber article, comprising twosponge-rubber boards, superposed one on the other, at least one being a splitof a spongerubber slab, each having skin on its abutting face, to provide an intermediate reinforcement, and at least one having cut sponge on its face opposite its abutting face.