US1039085A - Silo-mold. - Google Patents

Description

E. BLUMER.

SILO mom).

. APPLICATION FILED JULY 21, 1911. 1,039,085, Patented Sept. 24, 1912.

2 SHEETS-SHEET 1.

WITNESSES: [/VVENTOR E R I u m e. f"

. Attorney COLUMBIA PLANOURAPH c0., WASHINGTON. D. c.

E. BLUMBR.

SILO MOLD.

APPLICATION FILED JULY 21, 1911.

Patented Sept. 24, 1912.

2 SHEETS-SHEET 2.

O nC W1 TNESSES COLUMBIA PLANOCIRAPH cm. WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

EMIL BLUMEB, OF ST. JACOB, ILLINOIS.

SILO-MOLD.

Serial No. 639,795.

To all whom it may concern:

Be it known that I, EMIL BLUMER, a citizen of the United States, residing at St. Jacob, in the county of Madison and State of Illinois, have invented certain new and useful Improvements in Silo-Molds; 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 molds and more particularly to molds for constructing concrete silos or other circular structures.

An object of the invention is to provide a mold composed of sect-ions and so formed that it is unnecessary to build a temporary scaffold around the silo while the latter is being built.

Another object is to provide a mold of the above stated character having several sections adapted to be temporarily locked together to form a circle, each section being adapted to be unlocked from the remaining sections and moved upwardly to increase the height of the structure, and, another obj set is to provide an inner form and an outer form, both forms being composed of sections, the sections of the inner form having bracing rods 0r boards, across which planks may be placed for the workmen to stand upon while drawing up the sections and placing them in position and while pouring the plastic material between the inner and outer forms.

Other objects and advantages will be hereinafter set forth and pointed out in the specification and claim.

In the accompanying drawings which are made a part of this application, Figure 1 is an elevational view of a circular structure, partly completed, showing the workmen drawing up a lower section to place the same in position upon an upper sect-ion. Fig. 2 is a detail view of the lock employed for locking together the outer sections. Fig. 3 shows the preferred form of lock used to lock the sections of the inner form together. Fig. 4 is a sectional view on the line H of Fig. 2. Fig. 5 is a similar view on the line 5-5 of Fig; 2. Fig. 6 is a vertical sectional view through a silo or other Referring to the drawings in which simi- Specification of Letters Patent. Patented Sept. 24, 1912. Application filed July 21, 1911.

lar reference numerals designate corresponding parts throughout the several views, 1 indicates the sections of the inner form, said sections comprising plates curved from end to end and havin edges and upon their lnner faces the strengthening angle irons 2, the purpose of which will be readily apparent. Secured also to the inner face of each section 1 is the secured at their vertical bracing-beam 3, to which are se cured the horizontal brace rods 4:. The upper brace rod has one end secured near an end of the section, while its opposite end is secured some distance from the opposite end of the section; and the lower brace rod 4 has one end secured near the opposite end of the sect-ion while its opposite end is secured some distance from the first mentioned end of the section. Both brace rods, however,

are secured to the bracing-beam 3, which spaces said horizontal brace-rods from the central portion of the curved section and the brace rods cross each other at their respective points of contact with the vertical brace-beam, and thereby form a rigid truss which braces the section at its top and bottom and middle, and at points approximately equally spaced between its lateral ends and its middle.

All of the sections, except two, are provided with the eye straps 5 secured at their vertical edges in such position that the eye openings thereof will be one above another when the sections are placed end to end to allow the hinge pins 6 to be passed there- 3 a through when the sections are in position, the hinge pins 6 having their upper ends suitably bent to prevent the pins from dropping through the eye straps. The remaining two sections are provided upon their oppo- 1 site ends with eye straps 5 while their meeting ends are provided with cam locks, which will now be described.

The cam lock comprises a metallic plate -7 having secured thereto an arm 8 adjacent adjacent vertical edge of the other section, &

near the angle iron 2 at this edge. The end of the plate 11, against which the earn 9 en: gages, is suitably curved to accommodate the cam when the arm 8 is in a substantially horizontal position. The pivotal movement of the arm 8 is limited by means;

as just described, this locking mechanism serving to spread the sections at this point and force the hinged meeting ends of the sections tightly together.

The angleirons along the upper edges of E the sections 1, each have secured thereto the 5 outwardly directed staples 14: which are adapted to be engaged by the lower curved ends 15 of long suspending wires 16, which have their upper curved ends hooked over the upper edges of the sections directly 5 above. These staples '14 and suspending wires 16 are for the purpose of suspending i one circle or ring of sections below another 3 and holding each lower section against the lower edge of the circle directly above. The outer sections 17 are curved similarly to the l inner sections 1' and are of the same material, said sections17 also having strengthen- 1- ing angle irons 18 along their edges. These sections are provided with eye straps 19,;

similar to the'eyestraps 5 of the'sections 1 and positioned along the vertical edges: of the sections 17 in a manner similarand Q positions corresponding to that ofthe first eye straps. It might-be well to state at this time that the eye straps 5 and 19 are. bentf so as to avoid the angle irons along the vertical edges of the sections. Hinge rods 20;

are passedthrough the alining openings of the eye straps 19 to hingedly connect the adjacent ends of the sections 17 together i the same as the inner sections 1. The meeting ends of two of the outer sections, however, are locked together by means of a strap '21 'secured to a block 22 carried at the vertical edge of one of these ends and a locking arm 23 pivoted to the plate 21 and having the cam 24 integral upon the under side of said arm and adjacent the pivot pin 25, by

means of which the arm is secured to thecarried by the strap 21, said ear 27 also serving to limit the movement of the locking arm 23. This locking mechanism, as will.

beseemdraws the outer sections closer together, the cam 24 working within the U-shaped locking bar 26 and drawing the latter upon the strap 21, on account of the cam 24; working between the legs of the "U-shaped .member and againstthe inner surface of the curved portion connecting the legs. It will thus be seen that the outer form is also composed of curved sections which when locked together present a'circular form the same as the innersections and it will be readily understood that any number of circular forms mav be'employed.

one above the other, for either the outer or inner forms.

Each circle of the outer form may be se cured to the circle above by means ofthe curved suspending wires 28, the lower turned ends of which hook in the staples 29 carried upon the upper angle iron of each section, theupper ends ofthe suspending wires 28 belng also curved and secured over the upper angle irons of the sections above, the suspendlng wires 28 of each section hooking in the eyes 29 of the sections immediately therebelow. It will be seen that the lower sections of the outer form may be readily disconnected and raised upwardly to be placed on the sections of the top circle. 1

In employing this mold for constructing concrete silos or other structures of circular form, I prefer to employ enough sections of both the inner and outer forms to use at leasttwo circles to the outer form and two to the inner 'form, the object of which will presently appear. The plastic material is then poured between the outer and inner forms, suitable rods 30 or other reinforcing means being previously positioned between the forms to strengthen and reinforce the finished structure. The sections are preferably placed so as to avoid the joints of one circle being immediately above or below the H tions, are grasped and these loose sections 4 are then drawn upwardly and placed in proper position upon the sections of the top circles, where they are again hinged together and locked to form circles above the original top circles. be placed with their ends upon the brace rods 4 of the upper inner sections to pre sent a scaifold 01' platform, upon which the workmen may stand to draw up the lower Suitable planks ,may i sections and place them upon the upper ones I and also while pouring the plasticmaterial between the inner and outer forms. It will be seen that as the lower sections are moved upwardly and placed upon the upper sections, the planks may also be changed and moved upwardly and rested upon the brace rods 4 of the new upper circles of the inner form. It will thus be seen that this interchanging or moving upward of the sections to change the lower circle to the upper circle, may be repeated time after time as the height of the structure increases, it being understood that these changes are made as rapidly as the material sets or hardens sufficiently to remove the lower circle and place itupon the upper circle, at which time the lower circle becomes the upper circle.

It will thus be seen that I have provided a mold for silos and other circular structures, which may be readily employed without the necessity of building a scaffold and which will serve to mold a structure of any desired height, said mold when not in use requiring only a small storage space and one which is capable of being used an indefinite number of times.

When it is desired to form a window or door in the silo being constructed, the frame work for the window or door may be placed between the inner and outer forms and the plastic material poured between the forms and around the frame, the latter being securely held in position by the material, as will be understood.

It will be seen that as this mold is com posed of an extremely small number of parts of simple formation, it may be manufactured and marketed at an extremely low price, placing the mold within the reach of all having use for such device. It will also be evident that this mold is strong and durable and will be eflective in use.

What I claim is:

In a silo-mold consisting of a cylindrical outer form and a cylindrical inner form, a

number of curved plates forming the inner cylinder, each curved plate being held in its curved formation by means of a vertical brace-bar at the middle of the plate and extending from the bottom to the top thereof, an upper horizontal brace-rod having an end secured to the plate at a point near an EMIL BLUMER.

Witnesses:

KARL AEBIsoHER, FRANK P. SCHWARTZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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