US1273168A - Form for building silo-blocks. - Google Patents

Description

R. M. FERGUSON.

FORM FOR BUILDING SILO BLOCKS.

APPLICATION FILED SEPT- I917- Patented July 23, 1918.

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UNITED STATES PATENT OFFICE.

RAYMOND M. FERGUSON, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR 0F ONE-HALF TO DAISY LAUG-I-IRAY, OF GRAND RAPIDS, MICHIGAN.

FORM FOR BUILDING SILO-BLOCKS.

Specification of Letters Patent.

Patented July 23, 191 8.

Application filed September 7, 1917. Serial No. 190,198.

To all whom it may concern:

Be it known that I, RAYMOND M. FERGU- SON, a citizen of the United States of America, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Forms for Building Silo-Blocks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a form or mold designed to be used in the production of blocks made from cementitious material. The form is of especial value for the production of blocks to be used in the building of silos, in which it is desirable that certain grooves be formed in the upper and lower sides and in the ends of the blocks as they are positioned in a silo for the reception of reinforcing or tying members which, in this manner, are practically covered by the blocks and the mortar which is interposed therebetween serving as strengthening, reinforcing, and tying devices to hold the blocks against separation by reason of the pressure to which they are liable to be subjected in a filled silo. For the production of the blocks in a simple and yet eflicient manner, I have produced the form disclosed in the accompanying drawing, in which,

Figure 1 is a perspective view of the com plete form.

Fig. 2 is a transverse vertical section therethrough, one of the blocks which may be produced in the form being shown therein.

Fig. 3 is a perspective view of the block as it appears positioned in a silo construction, and

Flg. 4 is an end view thereof.

Like reference characters refer to like parts in the various views of the drawings.

In the construction of the form any suit able base such as 1 is provided, from the ends of which end members 2 and 3 for the form project in an upward direction. The base may be of any desired length. Sides 4 to complete the form are hinged at 5 at their lower edges to the side edges of the base 1 whereby the same may be moved to vertical position as shown in Figs. 1 and 2 or turned about the hinges 5 to a lower position. In practice a number of division members 6 will be disposed between the sides 4, the dis tance between any two consecutive division members or between an end division member and either end 2 or 3, being the height of the block desired; while the distance between the sides 4 is the length of the block, the thickness being the depth of the form, as will be evident. While I have shown in Fig. 1 a form for the production of three blocks, the invention is not limited to any prescribed number, as by lengthening the base 1 and using a greater number of division plates 6, a larger number of blocks may be produced in the same form. In practice the sides 4 may be held in upper position by any suitable detachable retaining means (not shown). Lengthwise of the sides at and on the inner side thereof, bars 7, having a curved surface, are fixed at a point slightly half-way below the upper edges of the sides 4. In addition bars 8 which may be of similar form are laid loosely at their ends upon the ends of the bars 7 and positioned against the inner sides of the ends 2 and 3 of the form, and also at each side of each of the division plates 6, said bars lying substantially half way below the upper edges of the form.

In the manufacture of silo blocks it is desirable that they have curved inner and outer faces. Accordingly, a plate 9, preferably of steel, of curved formation is located against the upper side of the base 1 of the form on which the cementitious material for the blocks is placed. The material of any suitable cementitious composition is entered into the form, the spaces thereof between the ends, sides, and division members being filled with material and the same tamped to make a more or less dense structure. The sideof the block, shown at 10, adjacent the plate 9 is of curved concave formation as indicated at 11 in Fig. 3; while the upper side of the block in the form may be shaped to substantially parallel the side 11 as indi cated at 12. The bars 8 form grooves 13 in the sides of the block while bars 7 similarly form grooves 14 in its ends as shown.

After the material has been placed in the form. and the blocks fashioned on their upper sides, it is permitted to remain a certain length of time that the material may partially harden and set so as to hold its shape when the sides 4 of the form are dropped. It Will be apparent that by reason of the curved formation of the bars or ribs 7 sides l may be turned about the axis of hinges 5, the bars 7 separatingfrom the block without breaking off any portion of the cementit'ious material as would otherwise occur if said bars T were rectangular in cross section. for instance. \Vhen the. sides l have been dropped, the blocks may he removed from the form. the bars 8 zu-companying the blocks until separated from the form after which they may be readily removed and used again for the next, quantity of blocks made.

I have shown the form as particularly adapted for the construction of silo blocks that is, with the sides thereof curved coneentrieally and with the bars 8 also concentric therewith;however-{the same form may be, used to make blocks with straight sides, the bars 8 and the grooves formed thereby being also straight and paralleling the-sides. Such blocks are of use in building," walls or like structures which are not of curved for mation.

form of the character described permits the ready formation of the blocks with the various grooves desired therein. A plurality of the blocks 10 may be located end to end and above each other with the curved sides 11 and 12 positioned vertically, in which case the grooves 13 in the si'lceessive blocks of a course are in alinement and the upper and lower grooves in adjacent lower and upper blocks are in conjunction. pe.r mittiiu, the insertion of various metal ties and reinforcements in said grooves between the blocks. Likewise various vertical ties and reinforcements may be positioned in the grooves 14 for tying the reinforcements in grooves 13 together or to the mortar which is interposed between the blocks. The form while of rilativcly simple construction is very effective for the burposes stated. The division plates 6 may be of any desired thick ness and in practice may be made of thin metal as they are subjected practically to no forces except equal pressures on opposite sides thereof which neutralize each other.

1 claim:

1. A form for use in making blocks of eementitious material comprising a base and upstanding ends. sides hingedly attached to the side edges of the base, a bar having a. curved surface fixed in horizontal position to the inner side of each of said hinged. sides, and bars loosely positioned against the inner sides of the ends of the form and rest ing at their ends on the bars attached to the sides of said form. substantially as and for the purpose described.

2. A form for use in making blocks of cementitious material comprising a base. ends projecting upwardly from the ends of the base. sides hinged at their lower edges to the side edges of the base. a plurality of division members located transversely of the base and detachably inserted between said sides of theform. bars having curved outer surfaces positioned lengthwise of and tixed to the sides of the form on the inner sides thereof betn'm'irthe divisiim members. and additional bars located transversely of the form and lying loosely one against the inner side of each end of the form and against each side of said division members, substantially as and for the purpose described. 7

3. A form for use in. making blocks of ccmentitious material comprising a .baee, end members projecting upwardly at the ends of thebase, side members liil'ic'ed at their lower ci'lgesjo the side edges of the base, a bar secured lengthwise of each side member 011 the inner side thereof. said bars baring rounded outer surfaces, a plate having a convex upper surface resting on the base, and bars loosely positioned one adjacent the inner side of each of said end mem hers, said last mentioned bars being formed to substantially parallel the eonrex formation of said plate.

l. A form for use in making blocks of ce-mentitious material comprising a base, side members hinged at their lower edges to and adapted to project above the base or be dropped to positions below the base. end members projecting u 'lwardly at the ends of the base, a plurality of division members paralleling the end members and detachal'ily interposed between the side members in spaced apart relation, thereby making a plurality of material receiving compartments, a plate having conteX upper surface located in the lower portion of and lengthwise of each compartment. the middle portion of said plates being at the highest level and thence curving downwardly to each end of said plates. a bar having a rounded outer urface attached to the inner side of each of said side members in each eoimiartment at a point slightly halfway below the upper edges of the side members, and additional bars curved to substantially parallel the upper surface of said plates loosely disposed along each side of each division member and on the inner side of each of the end members at points substantially half-way below the upper edges of said division and end members, said last mentioned bars resting; at their ends on the ends of the first mentioned bars attached to the side members of the form.

In testimony whereof I aflix my signature.

RAYMOND M. FERGUSON.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, I). C.

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