US 1307825 A
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Description (OCR text may contain errors)
H. B. MARSHALL.'
APPLICATloN FILED sEPT.|1.191.
1,307,825. Patented June 24, 1919.
. /Z l INVENTOR.
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HARRY B. MARSHALL, 01T LONG BEACH, CALIFORNIA.
Specification of Letters Patent. Pajhllijed J 11116 24, 1919.
Application filed September `11, 1918. Serial No. 253,612.
To all whom it may concern Be it known that I, HARRY B. MAnsr-IALL, a citizen of the United States, residing at Long Beach, in the county of Los Angeles and State of California, have inventednew and useful Improvements in Surf-Mao` tresses, of which the following is a specification.
My object is to make a pneumatic surf mattress, and my invention consists of the novel features herein shown, described and claimed.
Figure 1 is a perspective of a pneumatic surf mattress embodying the principles of my invention, parts being broken away and shown in section.
Fig. 2 is an enlarged cross sectional detail on the line 2 2 of Fig. 1. p
Fig. 3 is a fragmentary, enlarged, longitudinal, sectional detail on the line 3-3 of Fig. 1.
Fig. 4 is a fragmentary sectional detail of the air inlet valve and inner tube.
A piece of suitable canvas is cut to the desired size and folded upon itself to form the seamless rounded end 1, the top 2, the
bottom 3 and the laced end 4. Vertical,
longitudinally extending partitions 5 of canvas are inserted between the top 2 and the bottom 3 and evenly spaced apart to form the inner tube chambers 6, and the side edges of the top 2 and the bottom 3 are secured together by seams 7 and 8, and ropes 9 and 10 are secured along the seams 7 Iand 8 to form handholds. The pneumatic inner tubes 11 are inserted into the chambers (l, each tube 11 being provided with an air inlet valve 12, said valves 12 being located uniformly in corresponding ends of the tube, so as to `come at the laced end 4 and be accessible for attaching the compressed air apparatus and filling the tubes.
The details of the laced end 4 are as follows:
The bottom 3 is somewhat longer than the top 2, and the material is folded upon itself transversely, the two thicknesses of the material being stitched and secured together by the seam 13, so as to form the double thickness outer flap 14 and the single thickness inner flap 15. A separate piece of ma- `easily made and easily repaired.`
terial is secured near the end edge of the top 2 by the seam `16, to form the outer flap 17 and theinner flap 18.` The air inlet valves 12 come along the opening between the edges of the inner flaps 15 and 18, and these edges of the fiaps 15 and 18 are secured together by `lacing 19, there being space between the lacing for connecting the air hose to the valve 12. After the inner tubes 11 have been inflated the outer flaps 14 and 17 are secured together by lacing 20, so as to cover the lacing 19.
The pneumatic surf mattress thus produced is rectangular in plan. It is soft, flexible, light and buoyant, it will easily carry a considerable weight, it is not likely to injure any one by collision, and it is Various changes may be vmade without departing from the spirit of my invention as claimed.
A pneumatic surf mattress comprising, a piece of suitable canvas cut to the desired size and folded upon itself to form a seamless rounded end, a top, a bottom and an open end, the edges of the canvas being stitched together along the sides and there being vertical longitudinally extending par` thickness inner flap; a separate piece of material secured near the edge ofthe top to form `a second outer flap and a second inner flap;` lacing securing the inner flaps together so that the air valves are accessible between the edges of the flaps through the lacing; and lacing securing the outer flaps together to cover the first lacing.
In testimony whereof I have signed my name to this specification.
. HARRY B. MARSHALL.
Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents,
Washington, ZD. C.