US1015312A - Tubular structure. - Google Patents

Description

W. D. GRAY Y TUBULARSTRUUTURE;

APPLICATION FILED MAB. 30, 190B. I 1,015,312, Patented Jan. 23, 1912.

3 SHEETS-SHEET 2.

CoLUMmA PLANOGRAPH co., WASHINGTON, D. C.

W. D. GRAY.

TUBULAR STRUCTURE.

Commun APPLIOATION FILED MARBO, 1908.

Patented Jan. 23, 1-912.

3 SHEETS-SHEET 3.

aufm/WV:

PLANUGRAPH co., wAsHlNeToN, D. c.

WILLIAM I. GRAY, lor* MILwAUKfnmwIscoNsIN.

TUBULAR STRUCTURE. l

y Speeiiication of Letters Batent. v

Application filed. March 30, 1908. Sterialflilo. 423,988.

TooZZ whom it may concern: i f

Be it/ known that I, WILLIAM D. GRAY, a

citizen I of the `United States, residingV at 'Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Tubular Structures, of'which the following is a` speci-A fication, reference being had to the accompanying drawing, forming apart thereof.

This invention relates. to tubular, struc-l tures for elevator legs, conveyers, spouts and the like. Its main objects are to ,produce` light, strong and durable tubular structures of this class, which can'be economically'built in sections'or lengthsif desired and easilyv erected or installed, 'and4` which will have tight joints and will ynot twist or warp out of shape; to provide for easy access to the interior of such structures for repairs or inspection; and generally'to improve the" con' struction and increase the serviceabilityof devices of this class. Y

It consists incertain novel features 'of construction and in the peculiarv arrangement and combinations of" parts as hereinafter particularly described and pointed out in the claims.

In the accompanying drawing lilie charf acters designate the same parts in the several figures. Y

Figure l is an elevation of the front or outer side, as viewed frointhe rightA with reference to Figs. 2 and 3, of a portion of the ends of adjoining sections or lengths'of an, elevator leg embodying the invention; Fig. 2 is a cross section on the line'2 2, Figs. 1 and 3; Fig. 3 is aside elevation as viewed from the left with reference to Fig. 1; Fgs.

4, 5 and 6 are views on areducedscale of a portion of a cover section with a removable length, for an elevator leg or tubular struc= ture of the lcind shown in Figs. 1,'2 and'S, Fig. 4 being an outside elevation, Fig. k5 an inside elevatiomand Fig.I 6 a longitudinal section on the line 6 6, Figs, 4 and 5; and Fig. 7 is a cross sectionshowing'a 'modification of a tubular structure f for conveyer` cases. Y

Referring to Figs. 1 to 6 inclusive, show ing a tubular structure specially designed for elevator legs which may be made to facilitate manufacture and erection in lengths of any'desired dimensions and coupled together. end to end. Each length is composed of a U-shaped section a, and a cover section` o, of sheet metal, as shown,or of other suit- .the U-shaped body sectionsA are formed with Patented Jaa. 23,1912. i

, abler'nat'erial.v When made ofsheet metal]r *a outturned'flanges c along their longitudinaly Y .edges,`"'and the cover sections are made tok overlap these flanges, as .shown in, Fig. 2. n

jIn theV angles formed by ,the louttu-rned flanges c andthe sides of each section a, arey fittedj longitudinal reinforcing strips d,' j

which mayV ybe madek ofl wood. Over .the edges of each cover sectionv Z2 are fitted 'an-A gular reinforcing strips e, which may also 'be made o'fgwood vandihave* lipsv or flangesy f extending over and beyond the `edges of the section" o.; The strips e withthe cover sec# tion'bare-fastened to the strips d over the ou'ttirrned yflanges c ofsection a, by screws g passing? through the strips e andfregistemy ing holes in the'sheet metal sections into the Y lstrips fol, as shown in Fig. 43. The lips or flanges f' of thestrips c projecting kover the `1 edgesfofy section bandof the flanges yc, cover the joints lbetween them, giving a finished appearanceto thefstructure aswell as rein- Y l 'j forcing and' ystrengthen'ing. it. y

winsure` perfectly tightjoints, thin strips or To further 'sof layers zfgof `suitable packingvmateriahmay rbe interposedfbetween section b and the opposing flanges c of section a, as shownin Fig. 2.3' qThe sheet metalsectionsya and may be secured2 on the insideto the striped i ande independently of the screws g', which connect and bind the sections together by screws i, as shown `in Fig. 5.

Whenthe structure is made accordingto lthe preferable and usual practice, in lengths,

lfia-nged, metal coupling rings fare riveted or ,Y

otherwisesfastened to the ends of the lengths, and are secured together .with interposed gaskets Zapby kbolts Z passing through Aregisteringholes in the flanges Each ring formed adjacent to the joints between 4the sections a and Y), `with recesses correspond-" ing incrossy section rand in line "with 'the clampingv and reinforcing strips d and e,

and, these recesses are filled,as shown inFig.`

3, with plugs n ando of wood or other suit-' i able material, against which said strips. d

and eabut endwis'e and between which the outwardly` projecting llapped edges of the `section extend atadjoining endsA of the lengths. The coupling ringsare thus made K' to correspond in design or external contour lwithl the tubular structure, and the construction and assemblage of the parts of the struc;-

iio ture are facilitated. The separate lengths `maybe made to correspond withy the dis-k tance between floors of mills or buildings in which they are to be set up, and may be finished in a shop or factory ready for coupling together end to end in the mill or other building where they are to be used.

For elevator legs orsimilar structures where it is necessary or desirable to providev for easy access to the interior, the cover section is made in separate lengths, which are provided at their ends with interfitting rabbeted cross strips p p, one of the lengths b being removable with the cross strips p and the longitudinal strips e which are attached thereto and constitute a frame therefor. The strips eA like the strips e, have marginal lips or flanges f, which are adapted to cover and close the joints between the removable length or cover' b and the sides of the tubular structure formed by the section a. rl`he permanent side strips e project, as shown in Figs. 4 and 5, beyond the cross strips p, and the corners of the removable length or cover b and the mitered corners of its frame composed of the strips e and p, are cut away or recessed on the back or inner side, to receive the projecting ends of the strips e, which thus assist to hold the cover in place and close the jointsv between the rabbeted cross strips p and p at their ends. Sight openings are formed in the removable lengths or covers b', and these openings are bordered by grooved cross strips g, in which a glass or transparent panel 1 is fitted, the side strips e being correspondingly grooved to receive the ends of the panel, as shown in Figs. 4, 5 and 6.

Referring to Fig. 7, showing a modification of the structure designed for use as a case or box for a spiral conveyer, the U- shaped body section a and the cover section b are shown as made up of several layers of wood or other material glued or cemented together, according to the usual practice in making laminated wood structures. In this form of the structure the outturned flanges along the edges of the body section are omitted, and the reinforcing strips d riveted or otherwise secured to said section, bear directlyY against the overhanging or overlapping portions of the section b. The angular reinforcing strips e, which are secured by screws g to the strips d, have lips or flanges f which overlap the edges of section b and cover the joints between them and the strips d.

In both forms of the structure herein shown and described, the longitudinal strips cl and e serve not only to stillen and strengthen the edges of the sections to which they are attached and to prevent warping and twisting of the structure, but also serve to clamp or bind the edges of the sections together and to cover and close the joints between them.

Various modifications in details of construction and arrangement of parts other than those herein specifically mentioned may be made without departing from the principle and scope of the invention.

I claim:

l. A tubular structure for elevator legs and the like, composed of a U-shaped section having reinforcing strips applied to its longitudinal edges on the outer side thereof, and a cover section having angular reinforcing strips applied to its longitudinal edges on the outer side thereof and secured to the other strips and binding the sections together, the angular strips overlapping thc other strips and covering the joints between the adjoining sections, substantially as described.

2. A tubular structure for elevator legs and the like, composed of a U-shaped section flanged outwardly along its longitudinal edges, a cover section fitted to the open side of the first section and lapping its outturned flanges, and longitudinal strips secured to each other with the flanges of the U-shaped section and the edges of the cover section clamped between them, one of each pair of strips having a lip or flange fitting over and covering the intermediate edges of the sections and the joint between them, and the other strip of each pair fitting into the external angle between one side and the adjoining fiange of the U-shaped section, substantially as described.

3. A tubular structure for elevator legs and the like, made in lengths each composed of sections having outwardly projecting longitudinal lapped edges and provided with external strips which are secured together and form closed joints between the sections, and flanged rings fastened to ends of the lengths for connecting them end to end and formed with recesses into which the lapped edges of the sections extend at adjoining ends of the lengths, substantially as described.

4. A tubular structure for elevator legs and the like, made in lengths each composed of sections provided along their longitudinal edges with external strips which are secured together in pairs and form closed joints between the sections, and flanged rings attached to ends of the lengths for coupling them together end to end and having recesses adjacent to the joints between the sections and corresponding in cross Section with said strips, substantially as described.

5. A tubular structure for elevator legs and the like, made in lengths each composed of a U-shaped section having outturned flanges along its edges and of a cover section fitted flatwise against said flanges, reinforcing and kclamping strips secured together in pairs over the adjoining edges of the sections and covering the oints between them,

fianged coupling rings attached toadjoining ends of the lengths and recessed to receive the projecting edges of the sections .and plugs inserted `in the recesses Vin said rin s and corresponding in cross section with :said reinforcing and clamping stripsl against which they abut endwise, substantially as described.

6. A tubular structure for elevator "legs cross strips which constitute a'frame therefor; substantially as described.

A tubular structure for elevator legs ll and the like, composed of sections provided along their longitudinal edges with` rein'- forcing strips( arranged in pairsand cov ering the joints between the sections, one of vthe sections being made in separate lengths yhaving interitting rabbeted cross strips at the ends,fand lone of said lengths being removable and having Ilongitudinal strips with( Alips V,or flanges overhanging its goppositel edgesand adapted to cover the joints between the .removable length and theisdes j p wrLLIAM D. GRAY. A',

Witnesses: y

GRAS. L. Gross,r x Amon E. Goss.

Copies of this Vpatent maybe obtained for ve centseaclnpy addressing the Commissioner of Patents,

, `Was1xingtonl ID. C.

yof the tubular structure,v ksubstantially 1 as fdescribed. j Y j i In witness whereof I hereto affix my signature in presence of two witnesses.

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