US933650A - Adjustable and collapsible trestle. - Google Patents

Description

' Brahman wasp-14 A. I. nun. mm: Al! comm m "mums "I'll Ll. I'll.

MM Sept 7. 1909.

mull? T l a UAL-LMIJ UJ-AJ-Mb PATENT OFFICE.

ALLIIOTOII II. Infill. OI AUIOIA. COLOIADO. ASIIOROI OF ONE-HALF 'I'O PLATT- Nill [UPI-BRENT COIPANY. OI DENVER. COLORADO. A CORPORATION OF COLORADO.

lpeetleattoit at Letters Patent.

l'ntentetl Sept. '3. "I00.

lppltuttol It OGtOlItl' O. "OI. lct'lll I0. 450.4.

jl'u all n'lmm it "my concern:

lie it known that l.-.\t.t.tsu'ms ll.

' human. a citizen 0f the United flutes, re-

-iding at Aurora. in the county nt' Adam and Stanul' tfnlnradn. have invented new and awful lmprmements in Adjnstahle and t'nllateihle 'l't'entlee, of whieh the tnlluwintt ia pwilirallnn. p

'l'hi inwutinn relates in lt'estles fur tt.-e hv ear wnt rs and other t'uwhanies. and the niijet'i at the invention is tn provide a device uf thi character constructed entirely at irnn which may lwfadjusted vertically and longittulinally. which may have its legs paced at any desirml an le. which is etl'eetively supported and whiet may he eullapsed when desired.

With the above and ether uhjects in view, which will present themselves as the descriptiun irugresse the ittvelttintt resides in the nave man-traction and entnltitttttitm at parts lu-rcinafter fully described and claimed.

in the acmanpatriing drawing there has been illu trated a simple and preferred furm cf th devi e. but it is in he understmul that the st t'ttetttl'al details therein illustrated may he changml or nmdilied withuut departing from the spirit or sacrificing any of the advantage at the device.

In the drawing. Figure l is a pers mctive view at a trestle ennstrneted in accordance with my invention. Fig-'2 is a transverse i tiupal view taken upon the line 2--;' at

I H I In the twemn mnyiug drawing thenutnet'al i designates the tin of the trestle. Thi In I l is cnh truetml n a pair of lnngitudiaal y extending angle hars 2 and il. nae msttmned upuu the tap and overlapping the ether. The vertical sides 0! the L-ahtt )ed hars 2 and it are pmvided with a plum i'ty nl' aliuiu upenings 4 and 5. The hat-s land 3 are slit ahle upuu eaeh uther and are adapted tn he retained in en aged or adjusted pusitinn thruugh the medium t suitable headed halts i adapted far the reception at wing d nut 't'. 'Zaeh uf the L-nhu wed bars :3 and :l are pruvided withretnmah e legs 9 and l". The leg memhers t and I0 pasitinttt-tl tllmtt earh end at the tap l are ltlt'llta-al in cnnstt'n' tinn and-enmprise U-shaped sen-nuns ll aml l2 havtng their sides pruvided with a plurality uf altntng pet-feratinntil. 'l'he memher 11 is adapted to he titted within the memher l2 and tu beseruledin adjusted pn itiun therein-thrnugh the medium at headed hulls ll hnting thett' threaded t'.\llt'ttlliit'.-t engagml hv winged nuts las clearly illustrated in h'ig. l oil the drawing. -'l'he tnetnher .II which is adapted tn he secured upun the enter vertieal face at the angle iruus has it'- shles cut away a uitalde di-tanee and the t'\'ll't'l|til td' its hndy slightlt curved we at an arcuate hape as clearly illustrated in the drawing. This arenate eatensinn is pruvided with all elun' ated slut lit, the pnrpnse ni' which will ln-retnal'ter he fully set t'nrth. The side arms at the nn-mher l'..' are cut away a suitahle distance trmn its luwer extremity, and the lanl\' pnt'tintt helnw this rttt away purtiun is bent tn prnvide the curved feet l7.

'l'ltt "Pl dte tn tnhers l2.rmt'tteete-l with the l'nut jtt-t descrihed. are td' a precisely similar ennstrtwtiun. and the metnhet' It is alsn at a ituilar cunstru tien except that its upper cut away lmdy purtinn is heat a iprnsiluately elni-rylitnlrieally so that tiis extensinn at the dmh-e rests against lmtlt the inner \et'lieal all and the iuwt'l' fare at the angle irun tdwhieh it is attached. 'l'hi etui-eylindrieal pnt'lintt IN is prmided with an aperture I" which i adapted f r the reeeptmn at a pret'eraldy ruund headed hall '1". thruugh the at the perl'nratinns prnvided upnn the end at the \ertieal wall at the L- shaped l|tt'ltti.tt't'.- and tn prujeet thrnngh the upening ltt irmided he the areuate shaped estcnsiun nl the weather ll. llv this ar- 'llte luilt is adapted tn extend till rangement it will he hated that the leg see tiuns 9 may he adjusted tuward or front eaelt nther as de-ited. a winged securing eleuu-ut L'l heing adapted t'er engagement with the headed lmlt .t s0 as tu ellectively secure the parts together. In order tu retain the leg seetiuns in their pt'uper spread pnsithan a hat' 2'. hating its ends prnvided with right angular ntl's ts 2:: is pnsttintted within parallel upcnings l t at the leg seetinns. thus prevent ing the spreading at the same.

In erder tn u'event the lungitndiual nmt'ement til the cg set-thins there is prut'ided a pair nl' tie t'tals .l-l. 'lhese lie rnds have ene Hf their ends tdl'-et as indicated hy the numeral 2.. and is adapted fur engagement with the epening l and It pruvided hy the member J and ll. while the uppusite end at the red i liltfl'llitti with a nmhed shaped pm'li'nn .31- which is adapted l'nr eulta gagvnu'nt with the nritiees t3 provided in t the leg seetinus. lly this arrangement it will he noted that the leg- 9 are etl'eetively prevented from rotating in either diteetinn a away from the holt member :2" whieh nerves 1 a. a iivot for the venue. I W It'll it idesired to eollapae the trestle. t the rods 2'. and 24 are removed from their pointof eugagenu'nt. the winged member I to '.'t lum-eltt'tl upon the threaded member 20 and the leg -eetionu awung in a plane with ll.e \et'tieal v-it't'p of the L-fllnt red top.

Hot ing thus fully den'rihed the invention 6 what irlaina-d a.- new i:

l. eullttpeil l tre tle having a top )urtino mmtruetml of a mirof angle ltlt'ltl Itl'ri 3 one pm-itinttt'tl upon t it other. eaid members 1 having their vertieal walla provided witha a plurality n! spaced openings. weeuriug ele- 20 meuteugaginlg two of the.-e owning to retain the meta aers in loelted powitinu upon ea h other. a pair at an alarly arranged le tltetttlu h upon eaeh eta of the top. eaeh n t-aid leg taelnln-rs ('tllllpllrlllfl a pair of U- 26 -haped element positioned one within the 'other and lowing their sides provided with alining npeuin s. retaining tttetttllers ada )ted tn engage t uopenings to retain the eg tuetnln-l's in an extended pmitinn. an upper 80 port ion of one of the leg ueetiona being of an areuat foruottinn and pmvided with a slot, the upper member of "w oppmdte leg eeetion living enrved and adapted to lie beneath the L--lntped member of the tn i. this esteuaion ll living ah-o provided with it tt ot. a headed holt engaging the e'lutp' .ot the leg members and one of the openings of thetn a thumb screw for the holt. a rod having n set ends engaging the .-lot in eaeh of the le members to limit their npreatl pmitinn. am a rod having ntt-et endengaging with the perforations in the t p. and one of the perforations in one of the leg members to prevent the lateral movement of the said leg member.

2.. in a llltallt. a top portion eotnprisiug a pair of angle lltt'ltll tl'e. one meitioued upon the other. the \el'tieal wal a of the angle nn'tuhers heing provided with spared openiltgs. mean euga 'ing the opening to seeure the nn-tuhers in ugitudinal tttljtt -tt'd position in relation toeaeh other. said angle nu-inhers having their ends provided with spread leg members. eneh of said leg lltt'tlt-' hem eomprising a pair of U-elntped tttt'tttltt't'r'. one uua'illtttlt'd within the other. the side of the --haped menda-n: heing provided with a plurality of al'ining o mange. the lower leg seetiolm having routn ed feet. the upper leg sections having their side walls cut away. the body of the upper eeetiutt adapted to he umitimzed upon the outer vertieal wall of the angle nletnltet's heiug eurved and provided with a slut. the oppowite upper :eetiou having its sides ent away and its extending portion rounded to engage hoth of the inner sides of the angular member. the eatenion being provided with an opening ada ned to alihe with the outer opening providet in the vertical wall of the angular nuuuher. a threaded holt having a rounded head for these openings and adapted to enga the slut provided in the rounded lXillh-ltlll of the o t maite leg seetion. a threaded element for the holt. a end having inturned ends adapted to engage parallel openings of the 75 leg meudaern. amt a rod having one of its ends provided with a hook adapted to enge the opening noon the npponite side of t ie leg member. said rod having its oppoeite extremity otfset and adapted to engage the openings provided upon the vertieal walls 0 the angular members.

in teatlluunt' when-of I allix my signature in preeenre of two witnesaea.

ALLlXtl'lON Il. KRABIER 'itnesea:

Join: lm'rrxra, W. W. Gama-om.

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