US1746709A - Surf mattress - Google Patents

Description

Feb. `11, 1930, H. B. MARSHALL n 1;'746709 SURF MATTREss Filed sept. 12, 1928 Patented Feb. 11., 1930 HARRY B. MARSHALL, 0F LONG BEACH, CALIFORNIA SURF MATTRESS Application filed. September 12, 1928.

My invention pertains to surf mattresses of a type set forth in my Patents No. 1,307,825, dated J une 24, 1919, and No. 1,332,673, dated March 2, 1920.

` Difficulty has been experienced with inflated mattresses for use in surf bathing in that due to therough handling they obtain the fabric of the mattress pulls apart; and moreover, when the bathers carry these mattresses along the beach they generally hold them by a rope on the side, which frequently tears the material Land spoils the mattress.

Therefore, an object of my invention is to so reinforce the fabric of the mattress at the sides that the strain from the ropes and from the lrough handling will be distributed over a greater extent of fabric than in the prior types of surf mattresses.l Therefore in constructingthe mattress with upper and lower layers of fabrics joined at the edges I incorporate into the side edges reinforcing layers of canvas which extend part way along the top and bottom ofthe mattress and are sewed to the fabric at the top and bottom. In addition to this I have a folded tape extending along the -marginof the seam on the inside thereof giving an additional reinforcing on the marginal edge of the mattress. Therefore when the loose rope secured to the marginal edge of the mattress is attached to the outside seam the tension exerted by the rope is distributed longitudinally of the marginal edge of the mattress and also along the fabric of the top and bottom of the mattress. This construction of having the rope along the marginal edge of the mattress loose enables the bathers to grasp such rope and retain hold of the mattress even in heavy surf Yand also facilitates the carrying of the mattress on the beach.

Another feature and object of my invention is reinforcing the longitudinal partitions having the inflatable tubes-therein.

My invention is illustrated in the accompanying drawings, in which:

Fig. 1 is a plan view of my mattress partly broken away,

Fig. 2, is a cross section on the line 2 2 of Fig.y 1,

Serial No. 305,573.

Fig. 3 is a detail longitudinal section on the line 3-3 of Fig. 1,

Fig. 4 is an enlarged detail of one edge of the mattress similar to the section of Fig. 2.

In constructing my mattress I utilize up- "'55 per and lower sheets of fabric 11 and 12.

' hese are joined with partitions`13 formed of fabric with fillers and rubber tubes 14 are positioned in the pockets between the .partitions and the top and bottom of the mattress. Each 60 of the tubes has a valve 15 at one end, and there is a cover fabric 16 at one endl of the mattress secured to a l'lap 17 by lacing 18. AThis allows the tubes to be inliated and then the valves covered over.

. The marginal construction of the mattress comprises internal reinforcing sheets 19 and 20 which are illustrated as secured respectively to the upper and lower sheets 11 and 12 of the mattress by stitching 21 running longitudinally of the mattress and stitching 22 running transversely thereof.

There is a reinforcing strip 23 which has a reverse fold 24 and internalmarginal edges 25 adapted to extend longitudinally of the'75 sheets 19 and 20. A longitudinal row of stitching 26 binds the six layers of fabric on the edge of the mattress. These six edges comprise the margins of the upper and lower sheets 11 and 12 of the reinforcing sheets 19180 and 2O and of the folded strip 23. This stitching 26 through so many plies of fabric gives a distinct ridge 27 extending longitudinall of the mattress on each side, and if desired the same construction may be built onto the end of the mattress.

The rope 28 is secured to this ridge 27 by heavy stitching 29 which is also secured through the six plies of fabric on the marginal edge of the mattress. This rope is illustrated as being loose between the stitches forming an effective hand grip for holding the mattress in the surf and for carrying. i

By the above eonstructionit will be seen that the upper and lower sheets of the fabric of the mattress are adequately reinforced at the marginal edgeof the sheets 19 and 20, these extending partly across the body of the mattress; and that the folded strip 23 functions to distribute the tearing stresses due to pulls '-100 on the rope longitudinally of the marginal seam. Therefore the danger of tearing the fabric of the mattress or pulling the rope off the mattress is materially reduced over the former constructions.

The end 30 of the mattress is reinforced much in the same nature as the opposite sides by having stitching 31 with inwardly extending stitching 32 holding the reinforcing sheets in position.l The end 33 having the valves is constructed with a reinforcing strip 34 fitted inside of the outside fabric 35. An inner loop 36 may be made by folding the outside fabric on the line 37. Thecover fabric 16 is preferably made by a long fold of fabover the top of the valves engaged by the cover fabric 16 when this is drawn tight by the lacing 18. The loop 36 is provided with eyes 42 and the strip of fabric 40 extending past the valves 15 also has eyes 43, there being a lacing 44 through these eyes, thereby binding the ends 0f the tubes 14 in the mattress.

The construction of the partitions 13 is effected by forming these partitions of two layers of fabric forming a narrow pocket in which is tted a partition strip 13a. This strip may be made of wood or light thin metal or any other suitable structure which will give a longitudinal reinforcing for the partitions 13. Therefore, when the tubes 14 are inflated there is a rigid longitudinal stiffness of the members and prevents buckling or Lbending of the members in a longitudinal direction.

Various changes may be made in the principles of my invention without departing from the spirit thereof, as set forth in the description, drawings and claims.-

I claim: y

1. In a surf mattress having an inflatable structure therein, an outside fabric top and 1 bottom cover having a marginal seam, a reinforcing sheet secured to t-he seam and eX- tendin inwardly inside of the upper and lower abrics andsecured thereto by stitches.

2. In a surf mattress having an inflatable Y inner structure, upper and lower fabric covers secured by a seam at the marginal edge, upper and lower reinforcing sheets secured inside vof the cover and to the seam, the reinforcing sheets being stitched to the covers, and a vfolded filler strip secured to the seam and fitting between the marginal edges ofthe reinforcing sheets.

vcovering fabrics with longitudinal pockets having inflatable tubes therein, two of the side edges having the marginal edges of the covers securedv by stitching with longitudinally extending reinforcing sheets inside the upper and lower covers and secured to said covers by stitching and having a filler strip folded on its self with the fold between the reinforcing sheets,the reinforcing sheets and the filler strip being secured in the marginal stitching.

5. A surf mattress as claimed in claim 4, end stitching at one end of the mattress having reinforcing sheets and -a ller strip secured at their marginal edge and at the fold y of the filler strip by stitching to the marginal endof the upper and lower covers.

6. In a surf mattress having an upper and a lower cover with an inflatable structure therein and having a valve, a reinforcin strip secured to the lower cover at one end an having stitching through the margin, a cover fabric secured to the stitching and havingV eyes, a flap secured to the upper cover having eyes, and lacing between the said eyes.

7. In a surf mattress having an upper and a lower cover kwith an inflatable tube struc- `ture therein, a reinforcing strip secured to the lower cover adjacent one end, an inner flap of fabric stitched to the marginal end of the under cover and the reinforcing strip, said inner flap having eyes, eyes secured to the upper cover, and a lacing between said eyes securing the inflatable structure in the mattress. f

8. In a surf mattress as claimed in claim 7, the inflatable structure having a valve extending upwardly through an aperture in the upper cover and an outer flap stitched to the marginal end of the lower fabric, the reinforcing strip and the inner flap, said outer flap extending over the valve, a third flap secured to the uppencover, and lacing between the outer flap and the third flap.

9. A surf mattress having an outside fabric top and bottom with partitions therein, a reinforcing structure secured to said partitions,

and inflatable air holders in the space between Yloo Olli

Images