USRE14278E - X m mktt - Google Patents

Description

` 14,278. 2 SHEETS-SHEET l.

. A. HAMMETT. r

l APPLICATION FAILED MAYII, 19M.

C. A HAMMETT. FALSE WORK FOR CONCRETE coNsTHucTmNs.

APPLICATION FILEDv MAY H. 1914.

14,27 8. 2 SHEETS-SHEET 2.

Rissued Mar. 27, 191'?? f 'karzefg, Y aum alma), a` citizen ot the UNITED STATES PATENT oEEicE.

CHARLES A. HAMMETT, 0F WASHINGTON,

DISTRICT on COLUMBIA.

FALSE WORK FOR CONCRETE CONSTRUCTIONS.

Specification of Ressued Letters Patent. Reissugd )131g 2 191V "in Original No. 1,073,045, dated November 18y 1913, Serial No. 659,537, iiled February 23, 1912. Application tor reissue fusa May 11, 1914. seri-.11 No. 837,954.

To all whom t 'may Concern.'

Be it known that l, Cinemas limillnited States of America`r residing' at lVashing'ton, District of Columbia, have invented certain new and useful Improvements in False Work for Concrete Constructions. ot which the' following is a speciication.

The invention relates to a talse work for building constructionand more particularly to the class ot' adjustable knock-down or collapsible forms for composite consti-uo tions.

rl`he primary object ot' the invention is the provision of a. Jform or mold of this character in which a cemcntitions, plastic or composite foundation, for instance, flooring, may be constructed with a series of ribs of various width and depth spaced on centers, to develop the maximum compression area above the neutral axis.

Another object of the invention is the provision ot' a form or mold in which a single or plurality o't' removable fillers may be placed so as to regulate or determine the depth ot the ribs `in a floor construction.

further object of the. invention is the provision of a mold or form in which a plurality thereof can be properly and accurately centered with uniformity and the fillers therein adjusted in various places or planes to increase or decrease the depth of the ribs in the floor construction.

still further object. of the invention is the provision of a mold or 't'or'm in which the sections thereof can be. readily adjusted accordingr to the area of the floor to be constructed. and onfth'e setting and' drying of tlumaterial thereo't` the said forms or sections may be conveniently and quickly rennl\'ed. collapstal or disassembled.

A still furtherobject of the invention is the provision ot' a filler of novel construction, and which is secured in position., in vconnection with certain reinforcements,'between the sides ot the sections, in such a manner as to admit of thc ready and convenient 'setting` up ol the parts. the adjust'- ment oi the liller where adjustment is necessary. and the ready. quiclt'and convenient disasscniblafje and removal of the )arts in taking down the torni. the construction also being; such that the forms or mold sections may be disconnected and withdrawn in a straight vertical direction, and without lat eral movement. i

A still turtherobject of the invention is the provision ot' a mold or form of this characterwhich .is simple in construction, convenientl)v set up, reliable and c'flicient in its purposes and inexpensive in manufacture.

Uthcr'objects ot the invention will bc in part obvious and in part pointed out hereinafter. 'E l I The invention accordingly consists in the features of construction.y combination a-ud elements and arrang'cimnt of parts which will be exemplitied in the construction hereinafter set forth and the scope of the application of which will be indicated infthe 'following claims.

In the dra'wings:-Figure 1 is a fragmentary vertical transverse sectional view through. the false work constructed in ac` cordance with the invention. Fig'. is a vertical longitudinal sectional view oi' the same. Fig. 3 is a fragment ary vertical trans- 'verse sectional view similar tti-Fig. l, but showing the fillers in different position. Fig'. l is a perspective view of the end. cap removed. Fig. 5 isa similar view of a modi-Y fication. Fig. G is a similar view of a t'urther modification. Fig. Y is a similar view 'of a still further modification. Fig. S is a. similar view of a still further modification. Fig. J is a similar view otl a still 'further modification. Fig. 10 is a view of a stiil further modification. Fig. 1l is a frag'- mentary perspective view of one of the fillers removed.

"Similar reference characters indicate cor responding parts throughout. the several views in the drawings.

corrugated surfaces, the sections ll being Sti designed to telescope over the ends adjacentv thereto of the sections l0 and serve as intermediate sections, so as to afford continuous unbroken forms or molds when said sections have been assembled for the construction of a concrete dooring in a manner presently de scribed. The sections l@ in the sides there- .oic are provided with 'rertical slots 12, the

slots being formed near opposite ends of the said sect-ions, although they may be located at anj,7 other point th.erein,and through which are passed transversely arranged bolt members 13 adapted for vertical adjustment in the said slots, to support adjustable tillers comprising inverted U-shaped or chan; neled bars 'i417 preterably constructed'trom sheet metal' and having' depending side flanges 15 on which are formed alining holes receiving the bolt members 13, which have threaded thereon binding or locking nuts 1G for the fastening ot' the said'bars 13e in adjacent position between the sides of the sectionsvlO and 1l adjacent to each other.A It is of course understood that the bars 14. may be of any required lengt-l1 as the occasion may require Connected `with the bolt members 13 are the down-turned ends 17 of bracing bars, strips or spacing rods 18 which pre-- vent the crushing in 'or the separation of the said sections, and also sustain the same uniformly spaced With respect to each other when the sections are properly positioned for use.

Carried by the' bolt members 18 are closure strips 'i9 which are designed to bridge the slots 12 to prevent the cementi- Atious material from leaking through the same when the sections are in assembled relation for the formation oi Hoor. These closure members or strips are also adapted to 'assist in more rigidly uniting the parts and to rest upon beams of the supporting under-structure or framework, and thereby 'serve as supplemental supports to further brace the sides of the mold sections against `the Weight or pressure of the plastic materia-l.

Adapted for closing the free open ends of the outermost sections l0 or il of a series When assembled are .end closure heads or i'caps 20 made troni sheet metal7 the same being of a shape corresponding to the cross sectional contour of the said sections and fformed at the top and side edges with inturned right angular tongues 21' between which `are provided abutment nibs' 22 which vrespectively engage the inner surfaces and outer edges of salad section i'or the mounting of the heads or 'caps' '2O in closing position as shown in the drawings` I.The sections i0 and 11 when assembled and in operative position for the forma tion of `the concrete floor are arranged in parallel rows and are vconnected and as semhled in the manner as l.e1'etofore set forth.

in Fig. 5 of the drawings is shown a modification oi' filler which. comprises a vstrip .23 preferably constructed from Wood having a suitable transverse openingI receiving the bolt 2i which is mounted in the sections l() in an identical manner as the bolt member 13 so that this stip 23. may be substituted for the filler heretofore described.

In Fig. (3 is shown a further modification of filler which comprises in addition to the strip Q6 identical to the strip 2E but serie ing as a supporting base. a yerticaliy disposed board 2T upon which is superimposed a sotiit strip 2S, thus` in this manner`r the height or depth ot the filler ian be increaecd or decreased, it being understood ot course that it will be only necessary to vary the depth ot' the board 27 as will be In Fig'. 7 ot' the drawings shown'a still further modification ot' tillcr which cornprises a solid wood beaux .29 y'which may be of any required depth and is Jfastened in place between the sides adjacent to each.

other of the sections il? by means of a yokelike clamp l() haring a binding screu7 3l which also tastens the bracing.;` or spacing- 'l rods heretofore referred to.

In Figl l5 and 7 of the drawings the bolt members are non-zuljustably mounted in the sections. Y

In Fig; S is shown a modification ot mold orv form' 'which comprises the upwardly arched or boned sections 32 having` at their longitudinal edges inturned flanges 33 adapted to overlap each other, as shown at 35 in said tigure,or to abut against each other, as shown at. 33 in Fig. E) of the drawing, vto support the tiller.l

In Fig'. lOof the drawings is shown further modifi ation ot mold or torni which comprises an upwardly arched or bowed .section BJfoi'med ot' two parts 35 and 3G,

l'lO

37 which are connected by means of detachable fasteners, a single one only being shown and indicated at 38.

n constructing ,a concrete door the Afalse Work is employed in the tollowii'lg manner; The sections 10 and il are telescoped so as to form unbroken continuous rows arranged in thee-ame plane With-each other and the fillers are inserted between the sides of the sections and 'fastened in adjusted position by means ot boit members or clamps to which are connected spacing roes as heretotore set forth.) the sections being supported upon temporary joists 39 which are supported in any suitable manner as usual.; and poured into the spaces between thefsides of' tiles muy he 'ietionn ifi und. il is concrete which fills the Huid sinners `find also coversI tho crowns ot Said sec-tio e to provide the ribs 40, ui'thed hollovfe ii therebetween und the floor e, `the Suid rios; heing ot :my required depth. lt is court-:e understood thatlthe depth of the ribs i() muy he increased or deerefiisrd according to the adjustment of the fillers;I hetwecn the sides of the Section. By reni-on of the upwardly bowed or arched tornuition ot 'the Suid Sections 10 und l it enziliie :inf increased urea ot' eonerete'to be formed at the neutrnlhxisi of each rib in the 'looi eoinfruction torV ett'ering u Inuximuni ol' me h, rigidity, und etiicieney in the tloor, ihns, it will hersee'n that hollow entirely dispensed with und thereby difipI wing with; u resulting dead loud eind :it ie sinne `time eil'ecting ai connideruhie Having in the consumption-of conrrete material or otheiqcementitious suh-A stunre when constructing the floor in n manner als. hereto'liore stated. The Sections i() und il and their :id iunet. parte when assemhled reniuin in finch position until the concrete or like iniiterini hashecome Set and hurdi-fiuwl. whereupon the sume are collapsed or lvnorlted down tor further use, 2.s 'will be (fleurir understood. v

It will he observed thut the sides of the :ireland mold 'L .ationsl l() :ire str-(right and parallel und thut the Sides of :id izieent seetions` :ire ildjustnhie to u. certain degree with relation to mieli other to vitry the width .of the rib-tunning space between them, :is nrrsznion muy' require, 'it will 'oise be Sien that in tlnfforrn of the invention shown in Figs. l to TL inc'iusive, the i'llers 'llt are et einuineled conmrueimi, with their flanges projecti niej v'flownwiirdly and forming lbroad vertical 'tri-lion surfaces, g ;ivinl a proper degree ot' hie-firing cont-iet 'with the sides oi adjacent sections l() und niet adequate connecting; portions for the pussaffe therethrough o't the bolts i3. ,y disposing the Sides ot' :nl iucent @sections in paruliel rciution and providing' the channeled fillers with dowii-turi'ied flanges, provision is made for riosely sealing the` joints between the contacting sui-tuner; to prevent or reduce to the minimum iezdmge ot the material down- 'wzlrd hetvveen the finiey oi: the molds. Furtherxnore, the channeled torni of the fillers,

which renderA them ot great strength, enzihlee; the parte, when connected und braced :is described. to he made of colnpurntively thin sheet metal without sacrifice or" strength und with firent. :idvin'itnge in point of reduction of cost oi'z the mold parts, und greater ci'invenience and reduction ol elfpense in liziudlin und shipping the sinne troni point .o point.l over molds and eooperutine parte; ronnnonly inode o? woo i. The ehunnelef form ot the filler also adapts sides of adjacent Sections, the filler@` :ind the.

spacing lneinhers or lniires l. ns well us the cover plates if?, when employed, the uniount of tnnc und lnhor required in setting up or taking' down the inold is; miiteriultv rcdui-erl over molds having :i pluruhty of fastening elementel tor holding' sintiilur parts in position, und hy :xliso connti-uiting' und :irrunjging the clemente :1S drfscrihed, un :.ulvuntuec is ohtnined which is presen! in nl! the tornio of niv invention.` und thut is thut. upon d c toning-1.. the inold sections, liruees und the cover plates (if uned) inziy he tuiten down in u straight vertical direction sind without luterul motion. Also, it will be observed tlnitiu ull the 'forms of my invention the spacing ineinliers or lu'ures .t8 extend between the sides of nn :neii section, prefernhly on u. dirert horixontal line with the tiilers, so that. the pui-ts ure Sui'iported :1nd the Strains distributed und sun mined in sueh u we); ne to give the greatest :in'ionnt of supportingl strength nld rigidity to the weils ot' 'the forming sections Another important anlvuntnge resulting t'roin my improved conetrurtion of 'forming members is that by inziliing the forming rmmlrer: y ot' sheet nietul7 eurh in single piece, :is shown, eeononij.' of inni'nliu-ture secured as wel] in; lightness of weight and capability ota nesting the parts together, thus,I reducing*r the uniount otl luhor in lninllingf the molds und trinisportntion cost in lshipping' the nuire 'from place to pluce 'for The use ot sheet metal also allows .the

use. sides; ot' the nlold neetioni; to be sprung either outwurd or inward 'tor titting pur that the horizontalV trunsverse brunes lie-r tween the sides ot the mold sections hold such sides ot' the sections trol/n collapse sind thun permit of the eiiicient und reliable use of sheet i'netnl molds. By tuking down the mold seetions after the floor siehe have Set, the removed inold Sef'tions muy he einployed in forminganother mold, thus redueing` the ninnhor of mold sections required to he iniide and carried oy the hnilder or contractor.

in Fig. F of the. drawings there is shown o spacer our comprising' two parts 'tund to, respertively, whiehnre connected at their overlzipping ends hy iniuns 0i :i holt mem het' +G, the udlizieent taires of the overlupped end iicing provided with interlocking teeth l?, to prevent slipping' ot the parts nt the Hpsu'ir when Connected together.

From the 'foregoing deecription, taken in onnecting the tufs- 'of each section being connection nf'ith the accompanying drawings, it is thought that the constnction and operation of the invention will he cieariy understood, and therefore, a more extended explanation has been omitted.

That is-ciaimed is: i

l. il faise Work for concrete construction comprising rows of arched sectionse t c sides of each section being provided with siots, Fillers het jacent sections, spacer bars .between 'the sides of each section, cover plates extending over said siots and. single bolts extendinq through the opposed vslots in each of i i sections, said spacer bess, and through. seid .iiiers and adjustable cover pistes.

, j A'fase work ioi* concrete coiist'ruetion coinjn'isnils; rows. of arched sections, the sides of each section being' parallei, filters sir-- ranged. hctweeothe sides ofadjaccnt tions, spacer bars between the respective sides of each section, and single bolts 'pass ing 'freins'Y .ijf through the fillers, ndjacent sides of adjusted sections and adjacent ends of respective spacer hors. i

3. AA .faisework for concrete construction. coin'orising rows of arched sections, the provided with. shits., iiiers between adjacent sides of adjacent sections, spacer bars between the sides of 'each section, cover nietes extending over v channeled iiie'rs said slots, and fastening 'means cooperating with 'the opposed siots'in each of said sec tions, said spncerbais and through said iiiers, and adjustabie cover plates.

4. A false work for' concrete construction conipiisingiows oi arched sections, the sides of each section being paralei, adjustabie arranged between the of adjacent sections and having their angijes down-turned and lying in abutting* and. siidvingr engagement with said sides, and bote connected with the said down-turned ianges of the fiiieis and` adjnstabiy engaging the sides of adjacent sections and thus detach.- abiy and adjnstabiy secnringisaid iiiers in position. 5.' A false work for comprising rows of arched sections, the sides of each section being ne'raiiei, adjust-obiechezmk ieed fillers arranged between the sidesv of adjacentsections and having.; their ian'ges down-'turned and lying in abutting and sidingV engagement Withsaid sides, and bolts passingr through the said down-turned fianges of the fillers and adjustehijf engagine; the sides of adjacent sections and thus detachabij" end adjnstoby securing seid tilh ers in position.

G, A. 'false Work .for concrete constincion coniprisingl; 'rows of arched sections the sides of each section being paraiiel and pi vided. With verticai slots, adjustabe chan neled fillers arranged. between the slotted Ween adjacent sides of adA concrete construction liso?,

` tion comprising parallel arched iwith arranged between tno acont sections and having their Hannes dovg'n-tmned and brin. in abutting' and siidi, fument withsaid sides, and boit j. o; transversej7 through the downturnef'l danses oir each iiler and the slots in the swtions and siifiabiy, adjustably and detachably securing,l said iiler in posit-ion.

8. ii. faise Work for concrete construction conijni,..n o' jimi-alici arched sections, heli zontai transverse [iiiers arranged between the sides of adjacent sections, said fillers beine mijnstahle in the spaces' 'I Jetween said si.' es :For foi-ming ribs of varying depth,

horizontal tiffansvei'se 'spacer bars between the sides o' each section. and adjustable with said iiiiers, and a FasteningY means passing through and connecting the iiiiers, adjacent sides of the sectionsand adjacent ends of respective spacer hars in relative position and a'fijnstabie nponqthe sides of the sec tions. il S, .A aise Work for concrete construction coniprisirw paraiiei arched sections, the ad jacent sides of adjacent sections being provided with Vertical siots, horizontal trans- 'Veise fiiiers zufjiistahiy mounted between the slotted sides oi adjacent sectionsA horizontal tunisini-ese spacer bars between the sides ofi each'secton. and a fastening' means passing through the iiers, spacer bars and the slots in the adjacent sioes of the sections and coupling' and 1adjustably mounting' said iiiors and spacci. hars in relative position.`

1U. i ifase work for concrete construction conipi'ising parallelarched sections, the sides of each section being' provided with 'ver-tieni slots, horizontal transverse channeled iiieis adjustai'ilymounted between the siotted sides of adjacent sections and having their Hongos down-turned and frictionally' ennui-lng the sides of the sections, horizont-n1 spacer bars between the sides of transverse each section, and :i fastening' through and connecting filters and the adjacent ends of the respective spacer bars and efrtending` through 'the slots in thesides of the sections ind adjustably siiaporting the fillers and spacer bars thereon. f

ll. A tolse work for concsete construcsectons, filimenns j'iassing the Hanges of the ers adjnstabiy cent sides of adjacent sections, braces adljustably mounted hetufoeu the Sides ot' oach soction, vertical plates uponl theI outer fares fof-the sides of each section in line with the 5 filler?. and horizontal braces, and fastening .means passing through and oonjointly unitL y'ing said parts. ,12. A false work for concrete construction comprising forming members having "straight'sides arranged in paallel relation and adjustable 4with relation to each other, horizontal fillers adjustably mounted besides of the sections and the fillers.

tween tho sides .of adjacent Sections and in friction-al ougagemnt therewitlnand moans for adjustahly uniting the sides of thoylsections and the adjustablefillers in position, said uniting means passing through Smid K In testimony whereof, I affix my i nature iu the presence o two witnesses. ,n CHARLES A. HA ETT. Titiiessesz y Rumano I. oNmpL, MARY M. LYDDANF..

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