US1584756A - Method of and apparatus for moving forms used in constructing monolithic sewers and the like - Google Patents

Description

May 18 1926. 1,534,756

I M. F. DOUGHERTY METHOD OF AND APPARATUS FOR MOVING FORMS USED IN a CONSTRUCTING MONOLITHIC SEWER-S AND THE LIKE Filed Feb. 17, 1926 3 Sheets-Sheet 1 May 18 1926. 1,584,756

M. F. DOUGHERTY METHOD OF AND APPARATUS FOR MOVING FORMS USED IN CONSTRUCTING MONOLITHIC SEWERS AND THE LIKE Filed Feb. 1'7, 1926 s Sheets-Sheet 2 amuem toz May 18 1926.

M. F. DOUGHERTY METHOD or AND APPARATUS FOR MOVING FORMS USED IN CONSTRUCTING MONOLITHIC SEWERS AND THE LIKE Filed Feb. 17, 1926 3 Sheets-Sheet 3 Patented May 18, 1926 STATES MICHAEL F. DOUGHEETY, OF ST. PAUL, MINNESOTA.

METHOD OF'AND APPARATUS FOR MOVING- FORMS USED IN CONSTRUCTING MONO- LITHIC SEWERS AND THE LIKE.

Application filed February 17, 1926. Serial No. 88,856.

This invention relates to a method of and an apparatus for moving forms used in constructing monolithic sewers and the like.

l-lerctofore it has been the practice, after forming the trench, to lower a metal form which, because of its weight and unwieldy nature, has required considerable time for properly positioning it upon suitably arranged blocks or the like. Furthermore these terms, after the concrete has been poured and has set, must be lifted and iniovedbodily by a gang of men and reset. It has been found in practice that by the usual well known methods of operation the services of six men havebeen required to move a twenty foot form and practically four hours are consumed in properly setting the form. inasniuch as it is the pr ctice to prepare special =CHl5l1t blocks vfor supporting the tori-n when set, the time and labor involved in the operation is proportionately increased.

it is an object of the present invention to provide an apparatus whereby our men can move a form fort-y feet long or any practical length and properly place it, the entire operation requiring not more than one and onehalt hours where the form is six lieet or more in width.

hereaterm seven to nine feet in width has been moved by the old method it has not been possible to set forty-two feet of form in eight hours with six men for the reason that the weight of a form or" this type is from. one-hundred to one hundred twentyfive pounds per foot. I

It is an object of the present invention to provide a means whereby a form can be moved with case whether it be of any width ran from three feet to twelve feet or more and the some number of men can handle torn-is of all'weights and sizes with practically the same case.

Vt ith the foregoing and other objects in view which will appear as the description proceeds, the invention resides'in the coin.-

' binati-on and arrangement of parts and in i the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings,

h lgure 1 IS a vertical longitudinal section through a trench showing an improved form supported therein ready for the pouring of the concrete, said form; being in section.

Figure 2 is an enlarged vertical transverse section through the structure shown in Figure 1.

Figure 3 is an enlarged view partly in section and partly in ele-vationor" a. portion of the form and adjacent parts showing means employed for preventing the form. from upheaving while the concrete is being poured;

Figure at is an enlarged longitudinal section through a portion of the form showing ne of the troll ys used for supporting the rorrn.

Figur 5 is a transverse section through a trench showing the positions of the braces prior to the shifting of the form.

Figure 6 is an enlarged section through a portion of the supporting beam, of the form and showing one of the hangers in engagement therewith.

Figure 7 is a side elevation of the structure shown in Figure 6.

Figure 8 is a section through a portion of the modified. construction form for use in producing sewers of larger sizes.

Figure 9 is an enlarged front elevation of the hanger.

Figure 10 is a side elevation of said hanger.

Referring to the figures by characters of reference 1 designates a trench the walls cl. which are reinforced with cribbing niadeup or side sheeting 2 reinforced with superposed braces 3 bearing against side stringers l.

Elected over the trench at regular intervals are frames 5 each of which is provided with a chain hoist 6 or the like supporting a trolley consisting of a suitable frame 7 provided with supporting wheels 8. These wheels are arrai'iged in spaced pairs as will be apparent by referring to Figures 2 and 4.

l t here apparatus is used for producing monolithic sewers .or the like of a small size, such as six feet in diameter, a form, which is, in practice, forty-two feet in length, is constructed as illustrated in Figures 1, 2 and l. It includes .arcuate channeled strips .9 constituting reinforcing ribs and extending through anarc slightly less than one-half oi a circle. These ribs are riveted or otherwise ill) fastened to the inner surface of an arcuate metal sheet 10 preferably of boiler plate. Brackets 11 are connected to the sides of the form close to the ends of the channeled ribs 9 and these brackets have rods 12 connected thereto, the rods, in turn, being adjustably connected by a turnbuckle 13. Thus the rm further reinforced against collapsing and can be minutely adjusted to the proper contour.

Secured to the middle portion of each of the channeled ribs 9 is a hanger illustrated in detail in Figure 6. This hanger includes opposed metal strips 14: the lower ends of which are outturned to provide feet 15 which are riveted or otherwise fastened to the channeled rib 9 and to the plate 10. The strips 14 are held together by a bolt 16 extended transversely therethrough and the upper ends of the strips are offset laterally as shown at 17 and inturned to form supporting tongues 18. An I-beam 19 has its bottom flanges 2O engaged by the tongues 18 so that, when this I-beam is suspended as hereinafter explained, the hangers 14c will depend therefrom and support the form in proper position.

The I-beam 19 is engaged and supported at regular intervals by the spaced trolleys The form is lowered to position at one I. end of the trench, the lowermost braces 3 being removed so as to provide room for the reception of the form. Said form is suspended by the several chain hoists supporting the trolleys and after it has been placed at the proper level blocks 21 are mounted on the sides of .the form so as to support a transverse beam 22. lVedging blocks 23 are then forced between the beam 22 and the adjacent brace 3 as shown in Figure 2 so that the form cannot move upwardly. Following this positioning of the form the concrete is poured under it to the level of the top of the form. After the concrete has set the blocks 21 and 23 and the beams 22 are removed and. by means of the chain hoists 6, the form is raised several inches so as to fully clear the concrete thereunder. Thereafter some of the lowermost beams 3 beyond the end of the form are removed to provide necessary clearance after which the form is thrust longitudinally so that the beam 19 will travel within the substantially stationary trolleys. After the beam has passed out of engagement with the trolley at one end thereof, said trolley is removed and set up in advance of the form where it will be reengagcd by the beam 19. This operation is repeated until the form has been moved longitudinally with all portions thereof except one end supported beyond the concrete. Thereafter the form is lowered until said end rests on the concrete and, by means of the chain hoists the form is quickly set to the proper level and angle, blocks 21 and 23 and the beams 22 are again positioned and the apparatus is then ready for concrete to be again poured. Thus it will be seen that the formation of the monolithic sewer or the like can be completed much more quickly than has heretofore been possible, this being due to the ease with which the large heavy form in be handled.

Where larger sewers are to be constructed, the form can be modified somewhat. For example, and as shown in Figures 8, 9 and 10, brackets 21 can be arranged in superposed pairs and instead of providing one turnbuckle and two rods for connecting two brackets, fou rods and two turnbuckles are used. In Figure 8 only two rods and portions of two of the turnbuckles have been shown but it is believed that the construction used will be obvious, the rods having been illustrated at 25 and the turnlnlekles at 26. Where this larger form of device ployed the hanger 27 is preferably bolted as at 28 to angle brackets 29 riveted to the channeled ribs 30 which is secured to the boiler plate 31. Obviously other modifications of the form can be made without departing from the invention, these changes being designed to meet varying conditions encountered and differences in sizes of sewers and the like.

hat claimed is:

1. The combination with spaced trolleys, and means for adjustably supporting the trolleys within a trench, of a form, a beam extending longitudinally therein and supporting the form, said beam being supported by the trolleys and shiftable longitudinally relative thereto to become disengaged from the trolleys successively, said trolleys, when disengaged, being movable into position for reengagement by the beam.

2. The herein described method of producing monolithic sewers and the like. which includes the steps of suspending trolleys adjustably within a trench, sliding a beam longitudinally into engagement with all of the trolleys thereby to be supported thereby. suspending a form from the beam, pouring concrete under and alongside of the form. elevating the trolleys after the concrete has set, thereby to lift the form from engagement with the concrete, thereafter shifting the beam and the supported form longitudinally to become successively disengaged from the trolleys, and to successively remove the disengaged trolleys and position them in the path of the beam for engagement thereby during the longitudinal movement of the beam.

3. The herein described method of producing monolithic sewers and the like, which includes the steps of suspending trolleys adjustably within a trench, sliding a beam longitudinally into engagement with all of he trolleys thereby to be supported thereby,

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suspending a form from the beam, pouring concrete under and alongside of the form, elevating the trolleys after the concrete has set, thereby to lift the t'orm from engagement With the concrete, thereafter shifting the beam and the supported form longitudinally to become successively disengaged from the trolleys, and to successively remove the disengaged trolleys and position them in the path of the beam for engagement there by during the longitudinal movement of the beam, thereafter lowering the supported form into position for use, and holding the term against upheaving during the pouring of concrete thereunder.

4. Apparatus of the class described including separate trolleys, separate means for adjusting the respective trolleys, movable supports for the respective trolleys, a form, beam Within and connected to the form, said beam being supported by the trolleys and movable longitudinally relative there-to.

Apparatus of the class described including beam, hangers embracing and depending from the beam, a form including ribs, plates secured. to the 'ibs, said hangers being attached to and constituting supports torthe ribs, and a plurality of separately adjustable trolleys supporting and movably engaged by the beam. 7

6. Apparatus of the class described ineluding a beam, a form partly enclosing the beam and including ribs and plates secured to the ribs, hangers embracing the bottom portion or" the beam and connected to the ribs for supporting the form, an adjustable brace connecting the side portions of the fornn separate vertically adjustable means tor engaging and supporting the beam, said beam being movable. longitudinally with the form to become disengaged from the supporting means successively.

7. The combination with separate vertically adjustable supporting means, 01" a beam movable longitudinally into and out of engagement with said means, a form extending under the beam and laterally and upwardly relative thereto, and connections between the beam and the form.

8. Apparatus of the class described including separate movable supporting frames, llOlSLS connected to the respective frames, a trolley supported by each hoist, a beam movable longitudinally into and out of engagement with the trolleys and supported thereby, a form extending under the beam, and supporting connections between the beam and the form.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

MICHAEL F. DOUGHERTY.

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