US1119734A - Concrete-construction form. - Google Patents

Description

Mh/Miene j l L S. VAN GESENq CONCRETE CONSTRUCTION FORM.

APPLICATION FILED Novl 18,1913.

Patented Dec. L 1914.

21 SEEETSWSHEE'X l.

APPJCA'HON FILED NOV. 18,1913

Patented Dec. 1, 1914.

J. S. VAN GIESEN.

CONCRETE CONSTRUCTION FORM. APPLfzM'mN HLED Nov. 1a, 1913.

1 1 1 9,734, Patented Dec. 1, 1914.

3 SHEETS-SHEET 3.

I 521g. @Lesen Suma/tot` UNITED STATES, PATENT OFFICE.

JOSEPH S. VAN GIESEN, 0F LITCHVIL-LE, NORTH DAKOTA.

CONCRETE-CONSTRUCTION FORM.

Specification of Letters Patent.

Patenten Dec. 1, 1914.

Application filed November 18, 1913. Serial No. 801,653.

To all whom it may concern.'

Be it known that I'. Josnrn S. VAN Ginsi-iN,a citizen of the United States, residing at Litehville, in tlie county of Barnes and State of `North Dakota, have invented certain new and useful Imprm'ements in Concrete-Construction Forms, of which the following is a specification.

My invention relates to construction forms for concrete work, and more particularly to a type of forming means for upright convone above the other edgewise, and on both sides of ay space the desired thickness of a. wall, together with vertical means for supporting the said forming boards, and a portable or adjustable working platform.

`With these and other objects in View, all of which will be' clearly explained and claimed, the improvement further resides in the novel arrangement of parts best seen by reference to the drawings forming a part of this application. But before referring specifically to the several features as shown in the drawings .in whieh'like reference Characters represent like parts in the-several viens. 'l wish it understood that I do not intend to limit myself to the specific construction shown therein, but on lthe other hand shail e'x'iezft to use any kindfdf material and any 'shape of forms and to make all such mechanical changes in the construction of the forming means as may be required to moet all other forms of construction not here illustrated, to which the broad principles of my invention may be applied. y

VIn the drawings, Figurel represents an assembled view of. one form of a concrete forming means for a straight wall. Fig. 2 is a transverse section of the same type of forming means as shown in Fig. 1 when the wall is partly constructed and showing the method of procedure. Fig. 3 is a -view of a form of clamping means or the shaft of a hoisting windlass used in connection with the construction work. Fig. 4 is a sectional plan view on the line A--B of Fig. 2 showing a method of bolting the studding or upright supports and the means of supporting the sliding retaining keys for the form boards. Fig. 5 is a plan view of an arrangenient of my'principle in connection with the construction of a. hollow circular shaft. Fig. 6 is an elevation of the arrangement shown in Fig. 5, and, Fig. 7 is an arrangement for the spacin0r of forms used in certain constructions, indicating the forms and D the spacer.

Referring to the parts specifically and by the reference characters, 1-1 are the studs or upright supports having slidably mount ed over each two keys orkey members 2-2 the same being joined at the top in any suitable manner by the jointing means 3. Ke blocks 4 are mounted uponthe sides'of the studding in sufficient number .to guide and support the sliding keys against the backky =blocks or supports .being disposed a sullicient' distance back from the wall edge of the studding to allow vfor the thickness of the form-boards '5 as well as ward pressure of the green concrete, thesaid the sliding keys, (see Fig. 4), thus presenting a perfectly smooth inner surface for a flush wall. Y n

Secured to the outer edge of the studding (the edge farthest from the wall) in any approved manner is the supporting rack 6. This rack serves the purpose of taking the downward thrust of the platform support 7 which support' is pivotallymounted at 8 to the working platform 9. The platform is further provided with beams 10 Which extend rearwardly from the pivoting point 8 of the support 7 to another pivoting support l1 on the sides of the sliding keys 2. Mounted directly over the Working platform is the Windlass 12 provided with rotating crank 13, retaining pawls 14, connecting ropes 15 and counter Weights 1G, the windlass being rotatably mounted upon the upright studding 1 by. means of clamps (see Fig. 3) having a plurality of teeth. 17 registering with similar teeth 18 of the rack 6 in such a manner that the said clamp may be readily shifted to any desired height within hounds of the rack. The said clamp is farther provided with a flanged side wall 19 in which is an opening 20 the said openingr being for the purpose of receiving a retaining serewwhieh may be driven into the studding for further retaining the said clamp. The cylindrical bearing '2i is for the obvious purpose of rotatably mounting the windlass spindle. Springs may be disposed about as shown between the plat forni` supports for thc purpose oi' automatically controlling the supporting members. Rods or bolts 23 running from stud to stud through the' plane of the proposed `wall serve the purpose of steadying and securing the studs. These bolts may be provided with nuts at their extreme ends for the purpose of removing the said studs as the work progresses. It will be seeiitliat by this ai'- rangement of forming means any height of wall may be constructed with the equipment. shown in Fig. l (of course assuming 'the working platform to be in both sections of the rig instead of iii one as shown). The method of'procedure would be to fill up the forms there shown to the top; elevate the sliding keys after the cement was set, by ofperation of the windlass; then remove the orm boards and replace the same near the top of the wall, as in Fig. 2. This operation would be repeated until the work had reached lthe limi-ts of the present disposition of the studding, at which stage the said stiidding would he elevated as is shown in Fig. 6, use being made of the protruding ends of the bolts previously' left in the 1inished portion of the Wall -for support, Obviously thc arrangement shown in Fig` L may be carried on indefinitely to suit any height of Wall required, and that riglitangle corners, curved coi-ners, offsets or any irregularities tosut conditions may be made by a different disposition of the studding. Elevated structures such as towers, piers, smokestacks or the like may be constructed with an arrangement as shown in Figs. 5 and 6, while cisterns, wells, and all sunken shafts may be constructed in substantially the same manner except that the supports for the windlass -could be disposed upon the ground instead of upon the studding.

It may be necessary until the first course of cement is poured and set to provide a longitudinal supporting means for the vertical members of my arrangement; I therefore show for the sake of illustration a connecting cable .Zei disposed as shown, for that purpose, the ends of which are supposed to be secured to the ground. It is obvious, however, that I may see fit to join the members in any other approved manner and remain within the spirit of my invention. v

Having thusdescribed my invention, its advantages over the present manner of procedure become apparent.A The saving in time of erection, not to mention the saving in material, is enormous. On iai-ge buildings where the forming means are used repeatedly it is necessary with the old method to continually supply new material to replace timbers split and broken by erection and removal, while with my improved arrangement and method these disadvantages are overcome.

I claim as my invention cure by Letters Patent of the Unit-ed States :i

In a forming and constructing means for `concrete work, the combination ot' a plurality of vertically4 disposed supporting studs, means foi-retaining the studs in predetermined relative positions, slidable key members carried by the said studs, a hoist-ing means for the key members secured to the said studs, Connecting means and desire to severtically between the said hoisting means and the said slidable key members, a. supporting toothed rack secured to the said studs, and a working platform supported by the said lcey members and the said rack.

In testimony whereof I afiix my signature in presence ot two witnesses.

JOSEPH S. VAN GIESEN. vditncsses t ii. t). [lasso-N, A mia I'Vi-:x'rwonrin

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