US960657A - Support for concrete forms. - Google Patents

Description

o. M. MARKHAM lSUPPORT FOR CONCRETE FORMS. I

i APPLICATION FILED JAN. 30, 1909. l v

Patented June 7,1910.

#PLQ/@Mig @mr/; ,Marij/2am ,d M #50g/4M C. M. MARKHAM. SUPPRT POR CONCRETE POEMS. APPLICATION FILED 31111.30, 1909.

Patented June 7, 1910."

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CHARLES m. MARKHAM, or cnicaed'intmois.

SUPPORT FOR CONCRETE FORMS.

` 960,657; spenen of teem raient. Patented June fi, Ai910.

Application sied January so, isos. sentira. 475.245.

To altwhom tit may co'xwcm vention for loekin the supporting niem- -Be it known that I, CHARLES M'. MAnK- bers, mentioned in t e description of Fig. 4, HAM, acitizen of the United States, residin vertical position. Fig. 6 is a sectional deing at Chicago, county of Cook, and State tail of a portion of the member Shown in 1 5 of Illinois, have inventedcertain new an Fig. 5, an Fig. 7 is a detail rspectiveof 60 'useful Improvements in Supports for Qonone of the members engaging il); lower pori crete Forms, o which the allowing is a tions of the supportin members mentioned speCicatiOn. in the descriptions of i'gs. 4. and 5.

My invention relates to forms for concrete ,Referring now 4to the drawings 1 indiconstruction and more specifically to supcates an upright or timber. of any suitable 65 ports .for such'as are used in the. 4concrete dimensions and referably square in. cross construction of floors and floor vbeariiS or section, upon which is supported the essengirders, s tial parts' of -my device. In 'order to facilV The object of my invention is toprovnie Y tate exact vertical adjustment of said lipa form su ort of the character mentioned v y right wedgs 2 are provided at the lower i79- which wil e of such improved construcextremity 4 ereof upon which the same rests.v tion as to be adjustable, a aptin'g vthe same -to be used in theisupport o a' orm for a Resting upon, andv snugly fitting theupper 'concrete der an jcross sectional dimenend portion `of said upright '1 is a cap 3, preferably o cast metal. Said capis-cnii-l 'sions wy 1n ordina Frange and also in the support of a forni for a girder with diverging sides disposed at any angle.

A further object 'of my invention is to j provide a. tform support of the character mentioned', the joist supporting portions of 5; Projecting from a preferablyformed "80' which'will be oi such construction as to be integrally with the ce portio'nfrV aiehoriadapted to be vertically adjustable, thereby zontally disposedzilinv armsl'fofanylsuit-- f obviatihg the necessity, in jacking ip of the lable length. 8 indicate*4 ace rods extending lioor joists, of wedges and other a ditional between and preferabl formed integrally timbers as is the means ordinarily employed with the extremities o the arms 7 and the 85 to effect such pur ose. cap portion 6. Resting' uponA said ca 3 i A still :further dbject is to provide aform and arms 7 is an'elongatedtimberan 'on support as -inentiomdl lich will be strong and durable, com aratively simple of construction, hence o low cost to manufacture. Other objects will appear hereinafter. 2. With these objects in view my invention l, consists in' a form sipport characterized as i above Axiientione'd an 1n certain details of 40 eonst-ructionand arran ement of arts all as will be'hereinafter y set fort and 'par- Aticiilarly pointed out in the claims. 4 [M invention will bcmore' readily under. sto xby Yreference to the accompanying Jifidsrawings formin `fa part of this specifica tionzandi'nwhi Figure 1 is a fr nt elevation of. my device in itspreferred form, illustrating its applilk cation Fig. 2 is a side elevation thereof. Fig. v3 is va top plan view thereof detached.l i Fig; 4' is a detail 'erspective of one of the l guides of the mem embodied yin my device for supporting the door joists an the sides of the rler orm..' Fig. 5 is a detail 1 55 perspective ofthe means embodied in my ini cap pro er 4, the elongate pprtionsof brace rods` 5 ependinv from' eac :of-the corner of the latter, an an encircling band .6provided at the lower extremity o said portions timber 9 r`ests the `meniber .10 of the' girder -orm, lthe timber 9 being slightly longer than the member 10 is wi ln or- '9.0 der that said timber 9 may be readily and easily secured 'in place u on said arms an cap, I preferably iprovi e `the top"wall 11" of the lat-ter with e ongate slots 12. ABy such provision nails or'the-like'ma be' driven-"95 through said .timbenand said s ots intothe upper extremity of the upright 1 suehbeng the preferred means .employed or saidtimber inposition. i L'. i f' p A In order to upport V the-side 'members-13 of the girder crmarid the extremitiesof the floor joists 14,sinii1ar elongutemembers or bars 15, und-preferably. rectangularin cross section are provided. Said mem rs 1-5' are-slid'ab y mounted in ieotanglflfii' ots 105 16 `provided in similarly formed 17, the latter being detach ly to the arms 7 of the cap 3, by lneuns'bfne" gular slot form' .arms 18 rearwardly gecting from eit er thereof, the slots-19 H0 prised' of the rectangular upper portion or voxan 'tac ed, or be slid horizontally to formed by said arms being adaptedto snugly receiyesaid arms 7. By such construction the members 17 may either'be elevated from en gement with the arm 7 y and thus be dethe extremitles thereof to 'efect disengagement. Theislots'lrareof a width slight y greaten liquely or at an angle. The advanof which are ivtally securedto 'the cap portion 4 by t eir being looped around an eye 22 provided' upon and projecting from -channels 25, tapering inform,'.formed by.

said cap. Loosely resting/.upon each of saidL rods is a washer 23 ,and.threaded vthereon a nut'24. Said rods are adapted torcst in substantially parallelly extending ears 26 fori guard wadly projecting from either of said mem- -berS 17, the washers 23'being adapted, when said rods are so positioned,jtorest against the extremities 2'( -fof saidy ears, the same being locked .in engagement therewithby said nuts 24, as clearly shown in Fig. 3. To a inst accident-al displacement of said was ers from engagement -with said ears, I provide the end surfaces 27 of the latter, upon theouter edges thereof with rojections 28, such projections obviously `bers 15 is readily effected thereby a apting acllitatin such pur o se.- By4 such struction e lateral a justment of t mem-v myl device for use in 'the construction of a .4Q girder ofianylwidth. .29lindicate similarl ormed locking devices, the purpose o f whic is to -lock sai .members 15 1n vertical position.' Said members 29 are adapted to be detachably securedto the arms 7cby means 4'5 ofj hooked portioi1s30Ik rearwardly extending from thebody portion 31 of said members,

'g said hookedportions bein 4adapted, to enin the bi gage said arms as clearly s own in Fig. 2.

' Havin their extremities pivotally secured eatinlower end portion of the member 31 are aterally extendin slotted Ymembers 32, the slots 33 provide therein extending Qblnuely therethrough. Said slots are adapte when s aid devices 29 .are

positioned upon said arms, as shown 1n Fig.

150v posed, the members 15 may be read 1, to receive the lower end portions of themembers 15, said slotsbei slightly-greater than that oft e latter. Because ofv said slots 33 being obliqueilly disy .e e- ,vated .to any, osition but will be locked against vertlca movement in any position to which they may be adjusted, 1t being clear that the ed 34` and 35 of said slots will, because of t e weight of said memberspercon-

fthe joists beiner 15 be forced into enga ement with the lateral edges thereof; there y causing the locklng of said members against` downward movement. By such construction, the greater the weight ofthemembers l5 or weight -applied thereto, themore secure will be the gripping or clamping thereof,an advanta 'which will be obvious from the following. siring to lower said members 15, it 1s only necessary to slightly raise, as by tapping, the free extremit ,thereof ,will obvious y disengaged and pon de- 32' ofthe members 32,. w'hereupon the am in edges 34 and 35- said members 15 will drop, because of their own vity.

` 36 mdcate threaded rods, the inner end prtions37 thereof being looped around an eye 38formed upon and projecting from the cap portion 6.

"1; 39 indicate substantiallyl U-shaped inembers, a perforation 40 extending through one ofthe arms of either of said members bein adapted to loosely receive the rods 36. Said I :membersf3'2 are adapted to snugly receive, between the parallelly vextending arms there- -'Nuts 41 threaded upon said rods 36 adapted toabut the members 39 serve an obvious purpose. In order to insure positive en.- gagement of said members 39 with said members 15 I preferably provide either of the latter upon the inner edge thereof with a plurality of projecting pins 42, the latter being adapted to engage perforations 43 pgyicled in the contacting surface of named member.

. 44 indicate stops provided at the extremi said.

'of, the lower end'portion of the members 15.4

ties of the rods 36 to prevent displacement of Y i said'members 36.

' Infordento adapt the members 15`to sup-4 port the extremities of the joists 14 the up r end portions thereof are provided with ong'itudmally extending angular, arms 45' detachablysecured thereto by means of bolts 46 .extending therethrough and nuts threaded upon said bolts, the extremities ofV adapted to rest in the slots formed by said arms and the end portions of said members 15, as clearly shown in Fig.. 2. IThe contacting surface of the lower end portion of either of said arms 45 is provided with a projecting, transversely extending ridge 48, the same being adapted to be snugly received in a 'correspond' ly sh'aped recess 49 provided in either o e members 15 for t e reception of the same.

By such. construction a rigid securement of the arm 45 to the member 15 is-eifected. f In order that such arms 45 Ymay be adjusted' in different positions upon said members 15 each of the latter is provided with a pluralwi th.

' means of bo givin the three necessary adjustments refor locking said bars in any elevated posi- 7n qiuire to adapt bars l5 to use on different tion' against downward movement, elongate sizes and shapes of girders. Moreover, by .rods ivotelly secured to said cap, nuts drawing the upper ends of bars 15 to ether threa led upon said rods adapted' to engage by'means o'nuts 23, and forcing their ower said vertically slotted members, and a sccends apart, b means of nuts 41, intense ond pair of rods and nuts threaded thereon ressure may e exertednon the formsides, adaptedf to adjust the angularity of said if desired. -v bars, s bstantially as'and for'the purpose While I have shown what I deem-to be the speciiie 4pref/arable form ofnxy invention, I do not 4, Inilm apparatus 0f the class described, wish to be limited thereto, as there might the'combination with an upright, of a 'recgo be many changes made irPthe details of contangular"cap Adetaohably i mounted thereon, struction and arrangement ofparts without depending bracina means for Said cap, honideparting from the-spirit of my invention. zontally dispos alinin bars projecting And though I have designedl my device with from andi formed integra ly with said' cap, special reference to the supporting of girder integral braces for saidfarms, vertically slot- 55 forms, I may use the same i any other C011- ted members slidably andfdetachablymountnection to which it is applicable ed. upon Siald arms, elongate bgrsvslldgbly Having described my invention Whelmountedin the slot-s-in'said mmbers,-an claim as new and desire to secure by Letters g'nl'nr inist-gent, forming arms longitudinally l Patent is: i adjustable uponthe upper end rtion of on l. In an apparatus of' the class described, said bars,'slotted means in detac ableioonthe combination with an upright, of a Cap nection. with said first mentioned arms detachablymounted thereon, horizontally. adapted for ,lockingsnid bam ingn: ele. disposed 'alininv arms projecting from oppovated position, elongate :rods pivotallvy sesite sides of said cap, vertically slotted memcured to said cap, nuts threaded upon said bers slidably mounted upon said arms, elonrods .adapted to enga e said"vertically'` slotate bars slidably mounted in the slots in ted'members, asecon pair of rods an Anuts said members, means whereby said bars Will threaded thereon in connection the be normally locked against downward movclower end portion 0j said bars, subst tially ment, means, in'connection with said slotted as and'for the purpose specied. l 10o members adapted to lock the same against 5. In a deviceo the class d cribed, thev lateral movement upon said arms, and means combination with Van upright, "of horizonin connection with '-the lower. end portion tally disposed arms projecting from said upof said b ars wher-cbj,v the angular disposiright, a pair of members' slidably mounted tiontof the latter may be regulated, substunon said nrm s and provided 'with vertically 105 tially-as and for the purpose specified. l disposed slots; pressure i arms -extending 2. In an apparatus of ihe'cluss dcscribcd, l through said slots, locking. members slidthe combination with an'upriglu, of n cup ably mounted on said arms adjacent said detachably mounted thereon. horizontally i slidably mounted members and comprising disposed alining arms projecting from opu portion rcoesed to receive said hon'zonta llo posite sides of sail cup, verticalliv slotted arms and a portion 'pivotally connected to members slidably and deiachably mounted the first said portion and provided with a upon said arms, elongate bars slidably slot to receive said pressure arms, and means mounted in slots in said members, obliqucly for adjusting the first said members on sai slotted means in detnchul'ile connection with i horizontal arms and means for. spreading the 1.12! said bars adapted normally to loclt said ours l lower ends 'of said pressure arms, substanagainst downward movement, adjustable tially as described.' means in connection with said vertically (3. In a device of the class'described, the slotted members adapted to lot-lr the same combination with an upright,of horizontally against lateral movement. und menus in opdisposed arms projecting from said upl2 erative connection with the lower cnd porright, members slidably mounted on Vsaid tion of said elongate oars for adjusting the horizontal arms and provided with vertiangularity thereof, substantially as and for l cally disposed slots, means for adjusting said the purpose specified. members toward orfrom each other, pres- In an apparatus ofthe class described, sure arms extending through said slots, the combination w`th an upright, of a cap means for spreading the lower. ends of said detachably mounted thereon, horizontally pressure arms, a second member slidably disposed alining arms projecting from op, mounted on said horizontal varms adjacent posite sides of said cup, braces for said arms, each of the first said members and' a porp vertically slotted members slidably and dction pivotally connected thereto and extend; 13

It will be seen that by means of nutslfi` and 41 on rods 20, and 36, the bars 15 may be adjusted an ularly and laterally, and by ts 46, adjusted vertically, thus tachably mounted upon said arms, elongate bars slidably mounted in the slots in said members, joist seats formedfin Vthe upper end portions of said bars, means adapted ing beneath the first- ,said members, said 'orname to this specification in the presence of tions belilng provlilded gvithlots exth ing two subscribing witnesses. diagona theret lrou to receive sai ressurearmsy whereby sagid arms may be zad- CHARLES M ily raised but seurely locked against down- Witnesses: ward movement, substantially' ais-described. JANET E. HOGAN,

Ip testimony whereof I have signed my HELEN F. Linus.

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