US1236824A

US1236824A - Adjustable mold for building concrete structures.

Info

Publication number: US1236824A
Application number: US80575413A
Authority: US
Inventors: Solomon B Davis
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-12-10
Filing date: 1913-12-10
Publication date: 1917-08-14
Anticipated expiration: 1934-08-14

Description

S. B. DAVIS. ADJUSTABLE MOLD FOR BUILDING CONCRETE STRUCTURES.

APPLICATION FILED DEC-10, l9l3- Patented Aug. 14, 1917.

SOLOMON 3B. DAVIS, 0.1? SHAWNEE, OKLAHOMA.

ADJUSTABLE MOLD non BUILDING CONCRETE STRUCTURES.

Spec fi a on o t ers atent Patented Aug. 14, 1917.

hpo iee i le Deeemb 10, 91 s i e N 8 5,? 5 .1

To all whom it may concern:

Be it known that I, SoLoMon B. Dav s, a citizen of the United States and a resident of Shawnee, in the county of Pottawatomie and State of Oklahoma, have invented certain new and useful Improvements in Adjustable Molds for Building Concrete Structures, of which the following is a specification, reference being had to the accompanye ing drawings.

This invention relates to certain new and useful improvements in molds for building concrete structures; and the primary object of my invention is to provide an adjustable form or mold, especially adapted to be used in building monolithic structures.

Another object is to provide an adjustable mold, of a simple and inexpensive nature and of a compact and durable con: struction, capable of accurate adjustment to enable an operator to build monolithic struc-v tures, the thickness of the walls and horizontal reinforcements .Of which are auto matically increased with the increase in size of structure of polygonal form.

A further object is to provide a silo mold including a number of inner and outer form plat s, h ch may be djus t f rm str ctures in the form of a regular polygon of d ffer nt i m er d hi kn ss of W lls:

Another object is to provide a mold or form which can be arranged to be used in building structures having rectangular corners.

W th these and other objects n V ew the present invention consists in the combination and arrangement of parts as will be hereinafter more fully described and finally pointed out in the appended claim, it being further understood that changes in the sp cific s ructure s o n an escrib my be made within the scope of the claim with.- out departing from the spirit of the invention. i

In the accompanying drawings forming a part of this specification and in which like numerals of reference indicate similar parts in t e e al vie s;

Figure 1, shows a top view of two conneeted inner and t o connected o er pl tes s d in my in enti n, disclosing a locking Fig. 5,, shows a perspective view of four 7 release plates secured to form a rectangular wall corner.

Fig. 6, shows a sectional View of the inner and outer plates. 7

Fig. 7, shows respectively an edge and face View of one of the expanding strips In carrying out the object of my invene tion I employ a mold including two forms, one comprising a set of similar outer flanged plates, and a set of similar inner flanged plates, these sets of plates when connected i one ma n r ming a regular p yg n, t e inner P te be g o apr eter hined shorter length than the outer. The form P at are fla an re in erc a g bl he in e set further ncl d s a form pla e nclu ng a m j r an min r s ct n, which are detachably united and form what I term he rele s plat e c mbi e leng h and width o w co n ct d elease P a s b ng equa to t at of a r gu ar n er Pl e, As s wn n he drawi gs eac inn r form P t A wh c i fia s P ovid d With impe ange 1, a b se flange 2, an two s milar nd flang 3- As sh w n Fig.- 1, these end flang s fo m n ac te ang e ith th fa o th plates, th angle o hese l flanges ,3, in practice being extended approxima ely at eighte n deg ees to e face of e plat T e nne form s P ided with one plate forming a release plate and comp ising a majo plate section B and a minor plate section B, shown in top view as connected in Fig. 1. The major plate ion a its flange 3, subtending at l8 while the opposit releasing flange 5,,is held t n ngle of 45.- The minor p a e section B has a release flange 4, subtending at 13.5

to the base of the plate, es shown in ig: .1,

so that when said release flanges 4 and 5 are connected, the major and minor sections are held in alinement. In Figs. 1 and 2, these plates are shown as having their release flanges connected by means of the bolts B Each outer plate C is provided with a top flange 1 and a bottom flange 2 and two end flanges 3.

As these outer and inner form plates are made of thin sheet steel it is desirable to have their upper and lower flanges reinforced to strengthen the same, and this I accomplish in continuing the metal from the flanges 1 and 1 to form a double thickness a, which is continued in the end flange 6, held against the plates, as shown in Fig. 6. Near each end the top and bottom flanges of each plate are provided with suitable bolt openings 6, while the

end flanges

3 and 3 have the openings 7 The length of the inner plates A, and connected release plates B, B are of a predetermined length relative to the length of the faces of the outer form plates C.

As shown in Fig. 1, when the inner plates are connected in such a manner that the faces of the

edge flanges

3, 3 are held in juxtaposition, the end flanges 8 of the outer plate 0 are held in divergent spaced relation. In Figs. 1 and 2 the inner plate are shown as connected by means of the bolts A B while the outer flange 3 is connected by means of a bolt C As shown in Fig. 1, these flanges 3 extend atright angles to the faces of the plates.

In Fig. 4:, I have shown a mold comprising 12 united inner form plates and 12 united outer form plates. The wall between these two sets of form plates will be of a predetermined thickness. Now should 13 inner, and 13 outer form plates be employed, there would be a corresponding increase in thickness of the wall formed between the greater number of form plates. The dis tance between the sets of form plates increases as the number of plates is increased.

In building a wall, the inner and outer form plates must be held in parallel spaced relation to each other and in order to hold these inner and outer face plates in proper position, I employ what I term a locking bar D, which has one end recurved to form a hook 9, arranged to fit and clasp over an outer flange 1, while a U-shaped sliding jaw D is slidably held upon its member. This locking bar D near its hook end has a number of bolt openings 10, and near its opposite end the wedge seats D as well as the bolt slots D. A wedge D fits into the wedge seats to hold a set of inner and outer plates in accurate parallel spaced relation.

After the walls have been molded the outer form plates can be removed in releasing the bolts C Before the inner plates however can be released the bolts B must be removed so that the minor sections B can be swung inwardly, after which the major section B can be swung inwardly, permitting the ready removal of the remaining sections A.

There is a special reason in providing the release plate B and B of different lengths as will be set forth more fully hereinafter.

If it is desired to decrease the thickness of the wall after having reached a desired height, it is simply necessary to insert one of the battens or expanders G between each set of inner plates. This will result in clecreasing the thickness of the wall. As shown in Fig. 7 these battens or expanders have suitable openings arranged to receive the bolts A B, which are employed to connect the inner end flanges 3.

Where it is desired to build a square structure I disconnect the major and minor plates B and B and reverse these members and connect them so that a right angle can be formed as is shown in Fig. 5. Two members B are connected to form the inner mold forms and two larger or major sections B to form the outer plates of the mold. When this is done the corners are brought into alinement and a wall will be formed between the two members of a predetermined thickness.

Where the plates B and A are connected as shown in Fig. 2, the flanges of the plates are connected at their top by means of a locking bar D. In this construction a bolt 12 is used passing through one of the openings 10, while a second bolt 12 is made to pass through the slot D From the fore going it will be noticed these locking bars D are not only used in holding the inner and outer mold members in parallel spaced relation, but are also used in holding the different plates in alinement, where they are used to form square corners. Where the locking bars D are used to hold plates in alinement the sliding aw D is of course not employed. As set forth the doors are of the refrigerator type and if desired can be continuous or be arranged at intervals.

Further as described the thickness of the walls and the efficiency of the horizontal reinforcing increases automatically with the increase in size of the silo. Any desired thickness of wall can further be secured by the use of the expander G.

Having thus described my said invention what I claim as new and desire to secure by United States Letters Patent is:

An adjustable mold for building concrete structures comprising an outer and an inner plate held in parallel spaced relation, each made of thin sheet metal and provided with an upper and a lower flange extending at a right angle, each flange being of a double thickness and ending in an edge held against its plate, a locking bar which has one end recurved to form a hook arranged to clasp over one of said upper flanges, a U-shaped In testimony whereof I afiiX my signature jaw slildaloly held upon said locking bar, arin the presence of two Witnesses.

rangec to engage an opposite upper flange said locking bar having a plurality of wedge SOLOMON DAVIS seats, and a wedge adapted to work through Witnesses:

said wedge seats and against said U-shaped PAUL A. WALKER,

jaw to hold said plates in spaced relation. JAMES M. BERRY.

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