US1312398A - Scaeeold - Google Patents

Description

R. W. HAWES.

SCAFFOLD.

APPLICATION FILED NOV. 12, I9l8.

Patented Aug. 5, 1919.

2 SHEETS SHEET I.

I17 Ven'fof fin: COLUMBIA PLANOGRAPH cm. WASHINGTON. D. c

R. W. HAWES.

SCAFFOLD.

ARPLICATION FILED NOV" 12, 1918.

I 1 ,3 1 2,398 Patented Aug. 5, 1919.

2 SHEETS-SHEET 2.

TIIIE COLUMBIA PLANOGRAPH co.. WASHINGTON, n. c.

mm STATES PATENT ome a.

ROBERT W. HAWES, F BRUNSWIQK, GEORGIA.

SCAFFOLD.

To all whom it may concern:

Be it known that I, ROBERT W. HAWES, a citizen of the United States, resident of Brunswick, in the county of Glynn and State of Georgia, have made a certain new and useful Invention in Scafiolds; and I declare the following to be a full, clear, and

exact-description of the same, such as will enable others skilled in the art to which it it parts broken away.

" The invention has relation 'inally of the ships side,

Fig. 3 is a plan view of one platform section, showing thestandards in section.

Fig. 4 is a detail. perspective view of a portion of a platform section.

Fig. 5 is a detail fragmentary plan view of a platform section with the floor boards removed and the post in section. m

.Fig. 6 is an end view of a platform section. P

to scaffolding, adapted mainly for use in the building of wooden ships, having for its object to facilitate the transfer of the. heavy wooden side timbers or weatherboarding longitudand to facilitate the handling or application of said timbers to the framing of the ship. Other objects and advantages will hereinafter appear.

' The invention consists in the novel construction and combinations of parts, as

hereinafter set forth.

In the accompanying drawings illustrating the invention, the numeral 2 designates .the frame or skeleton of a ship, including ribs 3, and 4 are the side timbers or weatherboarding.

Adjacent to the side of the ship is arranged an upright supporting or studding frame 5, including uprights or posts 6,

spaced apart by suitable intervals and suitably braced or supported in vertical position, as by transverse members 7 connected to the ships framing.

Specification of Letters Patent.

Patented Aug. 5, 1919.

Application filed November 12, 1918. Serial No. 262,191.

The posts 6 are each provided with a vertical series of outwardly and upwardlyextending hooks 8, providing open-end seats 9 between the same and the adjacent faces of the posts.

The platform members upon which the side timbers are transferred and upon which the workmen stand and move in applying these timbers to the ribs of the ship are designated 10, being made in sections, abutted end to end, and each section preferably thirty feet long by five feet wide, by five feet eight inches in height. Each pla form section consists of uprights 11, spaced apart by distances equal to the distances separating the posts 6 of the studding or supporting frame, and connected upon the outside by three beams or stringers 12, 13, and 14 located respectively at the top, bottom and middle of each section, a fourth beam or stringer 15, corresponding in height and dimensions with the middle stringer 14 being connected and braced to the back frame of each section by transverse horizontal beams 16 mortised at their ends at 17 to the beams 14 notch joint 18, with the post 11. The floor boards 19 of the platform sectionsare nailed to the transverse pieces 16, and have their top surfaces substantially upon the same level as those of the stringers l4 and 15, the latter being located at the sides of the platform proper formed by the floor boards. The platforms of the sections are braced to the back frames of the sections by diagonalor strut braces 20, nailed along their rear vertical margins to the posts 11; having horizontal extensions at 21 beneath the stringers 15, and upper eX- tensions 22 between the stringers 14 and to the floor boards, said upper extensions being nailed to the transverse pieces 16. Other transverse braces for the stringers 14 and 15 are shown t 23.

The upper and lower stringers 12 and 13 are usually two by eight inches in cross section, the center beams or stringers 14 and'15 at the sides of the platforms proper being two by ten inches.

The bottom faces of the lower and center stringers 13 and 14 are spaced apart by two feet siX inches, and the bottom faces of the top and center stringers are similarly spaced apart. The hooks 8 in vertical series are also arranged horizontally in series, each horizontal series engaging the upper and lower and center stringers, the latter fitting closely within the open-end seats 9 of the hooks, being let down therein from above by block and tackle gear. The horizontal series of hooks 8 are therefore arranged at equal distances apart vertically to correspond with the equal distances separating the aforesaid upper, lower and central stringers, it being designed that when the work upon the side of the ship is finished at that part of the ship related to the platform sections at one elevation, that these sections shall be lifted by the block and tackle gear from engagement with the hooks 8 and raised or lowered to new position with relation to the side of the ship, being then engaged with other horizontal series of hooks 8 in the same way as first described, namely being let down in the seats 9 from above.

The platforms of the sections are sub jected to very heavy loads, the side timbers of ships bein r large and weighty, and it is designed by this invention to brace the platforms against yielding under strain by extension of the back frames of the sections below the platforms proper and to insure the sections against tearing away from the posts 6, by extension of said frames above the platforms, thus raising the angle of the point of support with relation to the free edge of the platform. The stringers, upper, lower and intermediate, of these back frames having engagement at intervals throughout their lengths with the supporting hooks 8 of the studding, the horizontal distances separating the hooks and studding posts being equal to the horizontal distances separating the posts of the back frames of the platform sections, whereby the supporting hooks are enabled to be located close to the posts 11, of said sections for better bracing or supporting effect. As the platform sections are raised or lowered to new positions with relation to the side of the ship, the stringers 12, 13 and 14 of the sections will fit interchange abl within the seats of the horizontal series of ooks 8, owing to the similar distances separating said stringers and separating said hooks, these distances being equal as stated, thereby facilitating the re-location of the platform sections and making possible a greater number of relocations at lesser distances apart, since the platform may be raised or lowered a distance equal to half the space separating the stringers 12 and 18.

The upper parts of the posts 11 and the upper stringers 12, engaging the hooks 8, not only afford a brace for the platform sections, as stated, but also act as a guard rail or fence to prevent the workmen from falling over backwardly, this being important owing to the very considerable heights at which they work.

In order to build the platform sections with the least weight, material and cost, it is found best to extend the longitudinal back timbers or stringers 12, 13, and 14, the stringer 15, and the floor boards of the platforms at each end of each section, a distance equal to one half of the space separating the posts 11, of each platform section, (there being four such posts to the section). In this way, the platform sections being abutted end to end, the posts 11, of said sections or of adjacent sections will always be equally spaced apart, as will also the transverse and strut braces.

The platform sections are provided with rollers 24:, to facilitate the longitudinal movement of the heavy ship timbers along the platforms.

I claim 1. In a scafiold, upright standards, outwardly and upwardly projecting hooks carried by said standards and including openend seats between the same and the standards, and platform sections having each back frame provided with posts and with longitudinal stringers connecting said posts and engaging said seats, said hooks being arranged in horizontal series, said series being spaced apart by distances equal to each other and equal to the distances separating said stringers, and said standards being spaced apart by distances equal to the distances separating the posts of the platform sections, whereby the hooks of the standards are enabled to be located close to said posts.

2. In a scaffold, standards, outwardly and upwardly projecting hooks carried by said standards and including open-end seats between the same and the standards, and platform sections having each a back frame provided with posts and with upper, lower and middle stringers connecting said posts and engaging said seats, the platforms proper of said sections being located substantially on a level with the middle stringers, and the upper stringer and the upper portions of said posts forming a guard or fence, said hooks b61110 arranged in horizontal series, said series being spaced apart by distances equal to each other and equal to the distances separating said stringers, and said standards being spaced apart by distances equal to the distances separating said posts.

3. In a scafi'old, upright standards, outwardly and upwardly projecting hooks carried by said standards and including openend seats between the same and the standards, and platform sections having each a back frame provided with posts and with longitudinal stringers connecting said posts and engaging said seats, said hooks being arranged in horizontal series, said series being spaced apart by distances equal to each other and equal to the distances separating said stringers, said standards being spaced apart by distances equal to the distances,

separating said posts, said stringers and the platforms proper of said sections projecting beyond the sections at each end thereof a distance equal to one half the distance separat- R. W. HAWES.

Witnesses:

W. R. BAUM, G. M. ANDERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0.

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