US1498651A

US1498651A - Apparatus for handling concrete forms

Info

Publication number: US1498651A
Application number: US396752A
Authority: US
Inventors: Russell H Folwell
Original assignee: FOLWELL AHLSKOG Co
Current assignee: FOLWELL AHLSKOG Co; FOLWELL-AHLSKOG Co
Priority date: 1920-07-16
Filing date: 1920-07-16
Publication date: 1924-06-24
Anticipated expiration: 1941-06-24

Description

June 24 1924.

R. H. :FOLWELL APPARATUS FOR HANDLING CONCRETE FORMSA Filed July 16, 1920 rSheets-Sht 1 QN IIIII L wfy June 24 1924.

R. H. FQLWELL APPARATUS FOR HANDLIG CONCRETE FORMS Filed July 16 1920 '3av Smets-*Sheet 2 June 24 1924..

R. H. FOLWELL A APPARATUS Fon HANDLING coNcnETE''RMs r'11ed July 1e 1920 :s sweetssneer 5 Patented June 24, 1924..

1,@,651 PATENT OFFICB RUSSELL H. FOLWELL, O CI-IIICAGO, ILLINOIS, ASSIGNO'R 'IO FOLWELL-AHLSKOG- COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

APPARATUS FOR `HANDLING CONCRETE FORMS.`

Application led July 16,

17 yo all whom t may con-cern.'

Be it known that I, RUSSELL H. FOLWELL, a citizen of `the United States, residing at Chicago, in the county of Cook and" State of Illinois, have invented certain new rand useful Improvements in Apparatus for Handling Concrete Forms, lof which the following is a specification.

The present invention relates to apparatus for handling concrete forms, especially such as employed in the construction of tunnels or the vlike where the forms are re.- quired to rbe assembled in collapsed and contracted condition to be then expanded, and again collapsed vand contracted so that'a gang of them carried upon a traveler may move out of a finished section of the tunnel to a new location for continuation of the work there to be expanded for molding the interior of another section ofthe tunnel. Theobject of the present invention is to greatly facilitate the handling of such vforms by providing a mechanism, which reduces to the minimum the number of operations required to put the apparatus into conditionV for receiving theforms intheir collapsed and contracted state and to expand them land collapse and expand the forms in continuation of the work; also to make all such operations much less `arduous than heretofore, while at the same time not re quiring any such number of Workmen as have heretofore usually been found Ynecessary in the working of apparatus of the general character in question.

The above object is achieved by a novel mechanical arrangement which avoids all interference between elevating and expanding operations notwithstanding the connections are established for doing both these things; in fact both may go on at the same time, according to the present invention, without any one set of power-applying cony nections interfering at all with another.

And the invention provides for the application 4of power to the best advantage at' the very outset of the expanding operation, and for continued effect-ive application of power inthe changing angular relationships of the parts, without counteracting resistances. Only a single set of expanding mechanism is required for each gang of formson each side of the vertical center. No4 interruption of the work is occasioned by any necessity for uncoupling one set of devices and 1920. Serial No. 396,752.

couplingup another to the fo-rms at an intermediate stage. The invention makes for carrying on ofthe work lof handling the forms with much economy of time.

In the accompanying drawings Fig. l is a cross-sectional representationof a tunnely in course of construction with apparatus of the presentinventionappearing inend elevation and ycoupled to the fully expanded forms, dotted lines indicating the conditionA` of the apparatus when carrying forms `in collapsed state; ig.l2 is a simplified topv plan view of the apparatus omitting all: but one pair of forms; Fig. 3is a sectionalplan view on,` a somewhat larger scale, .be-.2 ing 'taken substantially on the line 3 3 of F ig. l and confined toone. end of the appla-` ratus; Eiga is a vertical section ltaken on the line 4 4 of Fig.l3; Fig. 5 is 'ausection taken on the line 5-5 o-f Eig. 3; Fig., Vlais a detail cross-sectional elevation on line 1%1l Fig.' 2.

The numeral 2 designates theso-calledlinvert which is first laid, andr designatesv the track which is vput down over the invertY and upon whichthe traveler runs. ,The numeral 5 designates wheelsof the. traveler, 6 lchannels constituting legsof theA frame thereof between whichk said wheels are journaled, and 7 channels -constituting diagonal uprights of this frame `which rare riveted at their upper ends to a horizontal inverted channel 8. Above vthis latter channel there is a horizontal beam@ which supports the hinge-mountings of the forms and is vertically movable` The ltraveler isjof appropriate length to accommodate vagangof pairs of forms closely assembledy sdeby side. Numeral 10 designates the segmental forms of one such pair, the samevhaving hinge-plates or ears l1 to over-lap where the forms `meet above the beam 9 Vand to separably engage the hinge-fixtures upon the latter.. These are inthe form of notched plates 9a set on edge and secured. upon the top of the beam, being so located that pins l0a run through the over-lapped ears'11.ofv the lforms may` seat in the notches. vDef' pendingelongated tubular sockets l2, are secured to oppositeends ofthe beam 9 and pass down freely through the channel 8 and looselyv receive plain prolongations'ofjackscrews 13 suitably-shouldered `for ithe'liftand also engage reversely threaded lower jack-screws 15. The numeral 16 designates the handle of one-of the ratchets employed for elevating the upper ack-screws andconsequently the upper beain and the hinges of the pairs of forms. The lower jack-screws are held between short angle plates `17 in a channel 18 which runs centrally lengthwise of the traveler and constitutes part 'of the framework thereof. This channel rests upon and is bolted to cross-channels 19 set back to back on opposite sides of and riveted to the diagonals 7 whose lower ends are riveted to plates 20 on the legs 6 of the frame. Other vchannels 21, als'o set back to back, are put underneath the channels 19 and with mating `facing channels 22 they forni transverse slideways for elements of the forinsexpanding mechanism. Plates 23 close the bottoms of these slideways and knees support them at the ends, said knees being comprised of plates 24C riveted to the leg-channels 6 and angles 25 riveted to said plates and bolted to the bottom plates 23 and channels 21 and 19 by long bolts 25a Fig. 1. Additional support is supplied at intermediate points by plates 26 riveted to the channels 21 vand bolted to the channels 19- see F 5.

ThereY are tw'o of these cross-slideways at each end ef the traveler and they accommodate certain mechanism now to be described through which y'power is sup-'plied to expand the forni. 'Journal blocks 27 are 'secured in the ends ofI each slideway and a screw 28 extends the length of the slidjew'ay and journals inthes'e blocks as most clearly shown in Figs. 3 and 4. Collars 429 pinned to the screws adjacent said journal blocks hold them again's't endwi'se movement. A slide block 30 is fitted into 'each 'slideway and constitutes a nut through which thepscrew 28 works. The slid'epblotck conforms in general te the interior contour vof the slideway but is preferably shaped to reduce areas of contact between it and the walls of the slideway so as to` minimize friction. The block is of somewl'ijat elongated shape and has a pair of. ears 30* projecting from its upper side'. Between these ears a strut 31 is pivote'd, the saine being composed vof an angle-bar and a 'rivete'don pivot piece. The hands of tl'ie two screws at one end of the traveler are reversed so that if, for exainple, the outerinost screw in the illustration anorded by Fig. 3 is considered a right-hand screw, the other or inner screw in the illustration would be a left-hand screw. The 'nuts on these two screws work oppositely to vone another, one functioning to expand the forms on one side of the "center line and the other functioning to lexpand the forms on 'the other side of the center line. The screws at the two ends of the vtraveler work in pairs, that is to say, the two 4'outk'errnost screws work together and the two innermost screws work together. rlhus the two struts 31 which are pivoted to the blocks or nuts 3() engaged by the two outermost screws, are riveted to the opposite ends of a beam 32;

and the other two nuts (those engaged by the inside screws) are riveted to the opposite ends of beam 33. These beams are of such length a-s to provide for their pivotal connection with a gang of forms. Thus as shown in Fig. 2 each of said beams has several sets of pivot ears 341 distributed throughout its length to provide for as many as three pairs of forms. The forms have ears 10b to overlap ears on the beams, and the pivotal connection is made by removable pins 35 as indicated in Fig. 1.

A suitable ratchet 36 is applied to 'one end of each of the screws (36a designating its operating handle) and it 'will be manifest that with the arrangement above described the turning of thel screws 28 will work the slide-blocks or nuts along the slideways, and the turning of these screws in one direction will thrust the nuts outwardly and c'onsequently thrust the lower -ends of the struts outwardly and their outer ends carrying the beam outwardly and upwardly, expanding the forms. It will be noted from the dotted line illustration in Fig. 1 that when the forms are fully collapsed the struts stand close to the horizontal and therefore in the most advantageous position to exert a direct thrust in expanding the form, and it will furthermore be noted that as the operation proceeds and the angular relationship between th'e struts and the forms and between the struts and the vslide-blocks changes, power is still applied 'most advantageously to expand the forms. It should furthermore be noted that the operation of lifting of the hinge-cennection between the forms at the top by the turning of the ratchet sleeves 14, is in nowi'se hampered or interfered with by the strut-connection betweenr lower portions of the fo'rin's and the slide-blocks lor nuts. The ratch'ets for operating the latter may be worked simultaneously with the ratchets for elevating the hinge-connections, without there being any working of one of these expanding mechanisms against the other.

Lower pairs of shorter segmental forms 37 'are hinged to the upper forms, as shown in Fig. 1 where 38 designates the'hing'e-connections, and these lower forms are adapted to yfoldl inwardly in the hinges, as indicated by dotted lines when the forms are collapsed. A chain hoist on the Vtraveler will be used for the purpose but is not illustrated, being a common and well known thing in form-handling apparatus of the general character to which the invention relates.

I claim:

1. Concrete forni 'collapsing and expand- V Y l l, n ing apparatus comprising a supporting frame, crosswise movable members thereon,

means for operating said members, and struts pivoted to said members and pivotally attachable to the forms.

2. Apparatus of claim l in which the crosswise movable members take the form of nuts occupying channels of the frame, and operating means comprising screws engaging said nuts.

3. Apparatus of the character described comprising a frame work, overhead-hinged forms carried thereon, mechanism for raising and lowering the hinge, struts pivotally attached to lower portions of the forms, orosswise movable slides on the base portion of the frame to which slides the struts are pivotally connected, and mechanism for operating said slides.

4. In a form operating machine, the combination of a collapsible form; means for lifting said form; a car on which said means is mounted; cross supports on said car;

travel screw-threaded thrust blocks on said cross supports; push rods extending from said blocks to the form to expand the same;

lscrews operating on said blocks; and means for actuating the screws. Y

5. A form apparatus for concrete tunnels, culverts and the like comprising a collapsible form, and a traveller with a side collapsing frame adapted to be connected at one end -with a side lof the form, block means mounted on the traveller for substantially lateral movement, and means for pivoting the frame to said block means.

6. A form apparatus for concrete tunnels, culverts and the like, comprising a collapsible form, and a traveller with side collapsing frame adapted to be connected to the form, block means mounted on the traveller for substantially lateral movement, means ,for pivoting the frame to said block means,

and a screw for actuatinfr the block means.

RUSSELL il. FoLwELL.