US1165586A

US1165586A - Concrete-construction apparatus.

Info

Publication number: US1165586A
Application number: US76871713A
Authority: US
Inventors: Spencer L Fraser; Axel E Jacobson
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-05-20
Filing date: 1913-05-20
Publication date: 1915-12-28
Anticipated expiration: 1932-12-28

Description

2 SHEETS-SHEET I.

TNVENTORS Lf. abil.

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S. L. FRASER & A. E. IACOBSN. CONCRETE CONSTRUCTION APPARATUS.

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WITNESSES:

coLllMmA PLANomzAxn cn., WASHINGTON, n.

S. L. FRASER- & A. E. IACOBSON. CONCRETE CONSTRUCTION APPARATUS.

APPLICATION FILED MAY 20. 1913.

Patented Dec. 28, 1915.

4 2 SHEETS-SHEET 2.

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COLUMBIA PLANouRAPu c0..w^SHxNGToN. D, c.

SPENCER L. FRASER AND AXELE. JACOBSON, OF MINNEAPOLIS, MINNESOTA.

CONCRETE-CONSTRUCTION APPARATUS.

License.

Application filed May 20, 1913.

To all whom t may concern Y Be it known that we, SPENCER LEE FRASER and AXEL E. JAcoBsoN, both citizens of the United States, residing in Minneapolis, in the county of Hennepin and State of l\'linnesota, have invented certain newA and useful Improvements in Concrete-Construction Apparatus, of which the following is a speciication.

rIhis invention relates to apparatus for use in concrete construction, and hasv for an object to provide a form of variable size so that its diameter may be varied as occasion may demand, and also to provide a self-contained working structure.' Further, there is provided a platform for workmen, and forms and hoisting mecha- Y nism which may be raised as the work `proceeds.

The invention is particularly applicable for use in building hollow cylindrical structures such, for instance, as tanks or silos.

In the drawings accompanying this speciiication a practicable embodiment of the invention is illustrated, wherein- Figure l is a perspective view of the device set up for use, part of the form being broken away to show the concrete structure within it. Fig. 2 is a view on a larger scale showing one side of the form in cross-section and illustrating a crane support and radial arms and other features in elevation; certain parts of the crane and crane support are also shown in section. Fig. 3 is an enlarged horizontal section taken on the plane at the line 3*-3 of Fig. 2. Fig. 4 is a section through the crane support and post taken in a vertical plane. Fig. 5 is a cross-section taken on a plane at about the line 5-5, Fig. 2. Fig. 6 is across-section taken on a plane at about the line 6h63, Fig. 6; and Fig. 7 is a detail of the connecting devices for the panels and shows the interchangeable spacing blocks.

When the invention is used in connection with an apparatus for building a hollow cylindrical body such, for instance, as a silo, Jdiere will be provided an inner and an outer annular form, which will be raised asvthe work proceeds. These forms are made up of a series of panels or sections, 7, 8, which will Specicaton of Letters Patent.

Patented Dec. 28,1915. Serial No. 768,717.

be of some sufficiently flexible material that they may be flexed into the proper curvature. The sections are interchangeable and may be increased and decreased in number for increasing and decreasing the diameter of the structure which is to be formed. The ends of thepanels of the forms are shown overlapping and secured together by suitable transversely disposed connections. The connections shown comprise angle irons 9 riveted to the form panels a few inches inwardly of their ends. Between these angle irons are blocks 10 of hard-wood and passing through the angle irons and the interposed blocks are bolts 100 for effecting a small amount of adiustment of each of the forms. Interchangeable blocks of varying width may be provided. This is illustrated in Fig. 7 wherein a block 101 narrower than the block 10 shown in Fig. 3 is illustrated. and the dotted line position 102 indicates a block wider than that shown in F ig. 3. W'hen a greater range of circumferential adjustment is desired and can be formed by means of the interchangeable block, panels of different length from those of the series will be employed. Each of the forms in the present illustration is shown made up of a series of panels of uniform length and one panel of uri-uniform length. In Fig. l the panels 8 are of uniform length and panel 81 is shorter so also the panels 7 are of uniform length and the panel 71 is shorter than are the others of the series. When it is desired to remove the forms from the completed work the bolts 100 on the inner form will be tightened, thereby reducing the size of the inner form and the bolts 100 onthe outer form will be loosened, thereby enlarging the outer form. In this manner the form will readily free itself from the work. The inner and outer forms are shown connected at suitable intervals by means of stanchions. 11. Fach stanchion, which is a framework construction, is carried by the block of an inner and a block of an outer connection. Upon the framework is shown mounted the raising device, which device does not form a part of the present improvement and is not illustrated, except in a general way at 54 in Fig. 2. The frames ll are provided with bars or

members

12 and 13, through which there are openings for the passage of reinforcing rods le, which rods at these points are made use of as guides for the frames. Vhen the rods are Erst set in position the frames will serve to position them in the concrete. After this,-however, has been filled up to the top of the form, the rods will then serve as guides when the forms are raised. The forms are held in concentric relation in the present illustration by the frames 11.

The form is shown held in proper position by a spider formed of a series of radial arms and braces which are adjustable in length to suit the varying sizes of the forms. There is shown located centrally of the form a hub or socket 15, which will act as a support for the crane post 16 which carries the crane 17. The socket 15 is provided at its topand bottom, which may be about on the plane of the top and bottom of the form', with' an outstanding` fiange carrying ay rail 18, which rail is provided with a notch 19. This rail is for carrying the attaching heads 2() for the stays and radial arms. When the number of arms is determined, the corresj'aonding number of heads 2O will be placed upon each of the rails 18. The panels will be assembled and the ends of adjacent panels connected. rl`he radial arms 21 will then be secured to the upper heads 20 at their inner ends. and to the fr:4 mes 11 at their outer ends. rlfhese arms, as well as the braces 22, Q3, are shown' made up of a series of bars provided with bolt holes 2e, whereby the proper length is secured. The brace 23 will extend from the head 18 to the belt 25 which secures the radial arm 21 to the frame 11. Brace 22 will extend from the bolt 26 (which connects the radial arm 21 to the upper head 20) to the lower portion of the frame 11. After "the heads Q0 have been adjusted to their proper positions they may be secured at such positions by means of stay bolts 27. The concrete will be brought tothe work in seme convenient manner, preferably in buckets with the assistance of the craneV 17. Post 1G for carrying the crane' is shown made of tub'infw and passing within the socket 15 and almost to the lower end thereof, but with sufficient clearance that it may rotate freely. r1`he post 1G is provided just above the head carrying the flange 2O with a liange 2S, which provides one face for a roller bearing, the other face being provided upon the fiange Q9; between such faces there is a series of roller bearings SOfor sustaining the weight of the crane and permitting ready rotation thereof.

The crane is longitudinally adjustable to correspond with the longitudinal or radial adjustment of the radial arms 21, and also to permit the outer end of the crane to move out when a full bucket is being raised, and

to move in to permit the bucket to be emptied in the space between the two forms. A crane for this purpose comprises a platform portion 31 which is fast to the head 32 of the post 1G, and is supported at its outer end by means of a brace 33. 1t also comprises a movable portion 34; which carries a rack 35. There is mounted upon the portion 31 of the crane a pinion 36 in mesh with the rack 35, the shaft of which pinion carries a hand crank 37. By this means the outer end of the cranemay be moved in and out for the purpose of adjustment and for the purpose of permitting the more convenient handling of the concrete buckets. A cable is shown guided through the interior of the form to the crane also below the form and outwardly thereof. The outer end of the crane is shown provided with a pulley 38 over which passes the cable 39, which also passes over a pulley e() mounted upon the head 32, in such a position that the cable will pass through the hollow interior of the post 16 and over aV pulley 11 preferably located at the bottom of the structure. The cable from there will pass to some convenient operating device. rfhe cable is shown provided with a bucket engaging device in the form of a hook. For the purpose of holding the crane in its adjusted position the shaft L12, which carries the pinion 36, is provided with a ratchet wheel 13, which is engaged by a pawl 114 mounted upon the crane. rfhe fixed portion 31 of the crane is shown provided with rollers 45 for supporting the weight of the movable part *and making the movement thereof free. v ,Y

From the foregoing description it* will be apparent that structures of various diameter may be made with'the same equipment by varying the number of panels employed inthe form, a-nd that, as the number of panels is increased or decreased, the number of radial arms and stays may be likewiseva'ried. lt has been found desirable, in practice, to proportion the parts so that for building 'ai hollow cylindrical structure, say for instance, a silo, of a diameter of 10 feet, six of the alrins and six of the lframes will be provided, and when makingone'V of 16 feet diameter eight arms and eight frames, and twelve of these arms and frames may be used with a silo of 20 feet diameter. ,Thus one set of form panels may be used for structures of different diameters, and owing to the built-up character of the radial arms the same equipment will be used for struc-V tures of different sizes.

A platform 50 is shown mounted upon the arms or braces 21. This platform will be used by the workmen for a. scaffolding upon which to standand upon which to have such tools and materials-as they may'needl This platform, it will be seen, will be raised` with the raising of the form so that the entire structure, the forms, the crane and the platform, will be raised from time to time during the progress o1c the work as the concrete 51 is built up in the form space.

Although but one practicable embodiment of the invention has been illustrated, it will be apparent that changes may be made in the structure within the scope of the claims without departing from the spirit of the invention.

Although the forms are illustrated as circular in outline it will be apparent that they may be given some other shape if occasion may demand.

The jack 54C illustrated in Fig. 2 furnishes a convenient means for raising the forms and spider. This particular jack is shown and described in United States Letters Patent No. 1,044,659 issued to Axel E. Jacobson for ack ior raising concrete wall forms, November 19th, 19.12.

W'e claim as our invention 1. 1n a concrete construction apparatus, the combination with a series of form panels, of connect-ions uniting the ends of adjacent panels, a hub, a series of arms of' adjustable length radiating from said hub, and stanchions adapted to serve as means for attachment between the said connections and arms.

2. rilhe combination with a form, of a crane support located within and supported by the form, braces connecting the form and crane support, and a. platform resting upon the braces.

3. rlChe combination with a circular form of adjustable radius, of radial supporting arms ot adjustable length connected thereu to at their outer ends, a socket carried by the inner ends of such arms, a post rotatably mounted in such socket, a horizontally disposed crane carried by the post, and means for longitudinally adjusting the crane radially o1 the ltorni.

el. rhe combination with a pair of circular forms located one within the other and spaced apart for forming an annular mold, each ,of said forms being composed of a series of panels, connections between the ends of adjacent panels, a frame pivotally connected to the inner side of the inner connection and the outer side of the outer connection, a crane post support, stays connecting such support to said frames, a crane post mounted in such support, and a crane mounted upon the post.

5. The combination with a form made up of a series of interchangeable panels, av series of arms equal in number to the number of panels and connected to the junctures between the same, a. central arm-carrying member comprising a support of about the length of the width of the panels, and provided top and bottoni with a flange carrying a rail, such rail having a. recess at one point and a series or' heads corresponding in number to the number of arms carried by each such rail, and to which the arms are attached.

6. A concrete foundation apparatus, comprising an inner and an outer form, each form embodying a series of panels, the panels being formed of sheet metal and provided with transversely disposed connecting devices, blocks of wood interposed between the connecting devices, bolts traversing the connecting devices and blocks, and a` series of stanchions each connected to a block on the inner and a block on the outer form.

7. A concrete construction apparatus, comprising an inner and an outer form, each form embodying a series oi' panels, the panels being formed of sheet metal and provided with transversely disposed connecting devices, spacing blocks of varying widths for being interchangeably interposed between the connecting devices, bolts for traversing the connecting devices and blocks, and a series of' stanchions cach adapted to be connected to a block on the inner and a block on the outer form.

8. A concrete construction apparatus, comprising an inner and an outer form, each form embodying a series of panels, the panels being formed of sheet metal and pro vided with transversely disposed connecting devices, spacing blocks of varying widths for being interchangeably interposed be-` tween the connecting devices, bolts for raversing the connecting devices and blocks, a series of stanchions each adapted to be connected to a block on the inner and a block on the outer form, and a spider connected to such stanchions for holding same in proper relation one to the other.

9. A concrete construction apparatus, comprising an inner and an outer form, each form embodying a series of panels, the panels being formed of sheet metal having overlapping ends and provided inwardly of such ends with connecting devices, blocks of wood interposed between the connecting devices, bolts traversing the connecting deA vices and blocks, and a series of stanchions each connected to a block on the inner and a block on the outer form.

10. A concrete construction apparatus, comprising an inner and an outer form, each form embodying a series of panels, the panels being provided with connecting devices, blocks interposed between the connecting devices and secured thereto, a series of stanchions each connected to a block on the inner and a block on the outer form, and a spider connected to such stanchions for holding same in proper relation one to the other.

4g www@ 11. The combination with an inclosing form of a crane support located Within the same and braces connecting the form and crane support and carryng'the latter, and vmeans coperatng with said braces for ras signedour namesin the' presence of twosubscribing Witnesses. Y

SPENCER L. FRASER. AXEL E," JACOBSON.

ing the form, crane support and braces s- Witnesses: multaneously. F'. R. VILLEY, In Wltness whereof, We have hereunto H.C. BARNEY.

Copies of this patent may be obtained for five cents each, -byaddressing che Commissioner of Patents, Washington, D. C.