US1448849A - Mold foe hollow tiles - Google Patents

Description

Mar. 20, 1923.

J. L. LAMB.

Mom Foa' HoLLow mes.

2 SHEETS-SHEET I.

FILED NDV. 4,1922.

L rm

Patented Mar. 20, 1923.

O F F I C E JOHN L. LAMB, OF MIAMI, OKLAHOMA.

MOLD FOR HOLLOW TILES.

Application filed November 4, 1922.

To all @from t `may concern.'

Be it known that I, JOHN L. LAMB, a citi- @en of the United States, residing at Miami, 1n the county of Ottawa and State oi' Oklahoma, have invented a new and useful Mold lor Hollow Tiles, of which the following 1s a specification. i

This invention relates to hollow tiles for drainage, sewers, and other purposes and to molds for making them.

The object of the invention is to provide a title of this character which may be constructed to fit openings of various sizes and shapes.

Another object is to provide a tile of this charauftcr combining simplicity and ease of construction with the greatest possible utility and which may be repaired with the least possible digging and joining of parts, the use of which discloses with certainty to the party laying, When a complete job has been effected.

Another object is to provide a simple and etlicient form for constructing circular pillars or posts.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the inven tion herein disclosed may be made Within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings z- Figure 1 represents a side elevation partly in section of a mold used in forming a cylindrical post.

Figure 2 is a top plan View thereof.

Figure 3 is a transverse section taken on the line 3 3 of Fig. 1.

Fig. 4 is a side elevation partly in section of a cylindrical pillar constructed in the mold shown in the above described figures.

Fig. 5 is an end elevation thereof.

Fig. 6 is an end elevation of a slightly different form of mold.

Fig. 7 is a top plan view With parts broken out and in section of another form of mold for constructing semi-cylindrical tiles.

Fig. 8 is a longitudinal section thereof taken on the line 8-8 of Fig. 7.

Fig. 9 is a transverse section taken on the line 9-9 of Fig. 7.

Fig. 1() is a detail perspective view of a Serial No. 599,029.

tile constructed by means of the mold shown in Figs. 7 to 9, and

Fig. 11 is an end elevation` showing two of the tiles arranged to form a hollow conduit or block.

In l `igs. 1, 2 and 3 a forni 1 is shown for molding a hollow concrete pillar or post such as that shown in Figs. -i and 5. This :form 1 comprises an outer longitudinally split casing 2, the longitudinal edges of which overlap and are provided With interengaging tongues 3 as shown clearly in Fig. 3.

This casing il is held in operative position by any suitable means in addition to the intcrengaging tongues preferably by retaining bands Lit and by a cap 5, the flange G ot' which lits over one end ot' the casing i2 as shown in Fig. 1, and thereby assists in preventing spreading of the casing. A smaller cap S is carried by the cap 5, beingr secured thereto by a bolt 7. This cap 8 has a flange 9 concentric ivith the iangc G but considerably wider and is designed to tit in a collapsible core 10 located in casing Qa and` non to be described.

The core 10 is composed of a longitudinally split tube ot resilient sheet metal with the longitudinal edges thereof overlappinc. said core having a tendency to contract and is normally held in expanded position by the flange 9 or cap S inserted at one end and by a cylindrical member 11 inserted in the other end. Then this core 10 is mounted in the casing 2 it is spaced from the inner wall of' said casing a dista-nce corresponding te thc thickness oi the Wall oit the hollow pillar or post to be formed and is retained in this position by the cap 8 carried by cap 5 and by spring clips or gripping fingers 12 which are carried by the casing 2 and secured thereto in any suitable manner. These spring lingers 12 are here shown having hooks 1? at their inner ends which are engaged with the uppermost band 4- which surround the casing The body portions 14.- oi these centering fingers are arranged flat :.xgainst the outer face of the casing .2 and are provided at their upper ends with hook-like bends 15 which lit over the edge ot the casing 2 and then folded again upon themselves as shown at 16 and extended inwardly and outwardly to engage the core `10 and hold it centered, any number of these fingers may be employed. three being here shown.

The flange 9 ot' the end cap 8 and tubular member' ll are preferably oiled on their outer faces to facilitate their insertion and removal so that after the pillar or post has been molded these members may be readily removed from the core l0 and thus permit said core to contract to facilitate its ree moval.

ln the use of this form, the parts being iu. the position shown in Fig. 1` the concrete or cement is poured into the space between the outer casing 2 and the core l0 completely surrounding said core and filling said space. After the poured cement hardens sufficiently, the mold or form is removed by withdrawing the cap which carries with it the inner cap 8. The spring clamp or retaining banda l are then removed from the casing 2 which permits said casing to expand and he easily` slipped off the molded article.

The tubular member ll. is then drawn out of the core l0 which will permit said core to collapse or contract and he easily removed leaving a cylindrical post or pillar li' such as that shown in Fig. 4. The side walls of this pillar 1T maj,v be vari-ed in thickness as desired b v changing the relative sizes of the casing Q and the core l0 as will be under stood.

In the form shown in Fig. G. the core l0 is exactly like that described above. the casing 2 being similar to the easing 2, except that it is made rectangulai` in cross section instead of circular.

ln Figs. 7. 8 and 9 another mold Q0 is shown designed to produce the tiles 30. one of which is shown in detail in Fig. lll. and in Fig. 1l.y two of them are arranged in superposed position to provide a hollow block or conduit having a bore extending therethrough which is cylindrical in form.

The form employed for making these tiles comprises two side boards 2l and QQ of a width corresponding to the thickness of the tile 30 to be produced. These boards 2l and are connected at their opposed ents; by rods 23 and 24 which are removably mounted in said boards. Arranged between the boards at longitudinally spaced intervals are a plurality of transversely arranged par titions 25 preferably constructed of galvanized iron or the like and are spaced apart a distance corresponding to the length of the tiles to he molded. These partitions are held in operative position by any suitable means` cotter pins 26 being here shown en tended transversely through the boards 2l and 22 with their fureations straddling the partitions as is shown clearly in Fig. 7.

Any desired number of these partitions Q5 may be provided, according to the sizes of the mold. five being here shown and which operate to separate the individual tiles formed in the mold. These partitions have their upper edges cut out as shown in Figs. 7 and S, said cut portions being of any desired configuration according to the shape of the inner faces of the tiles to be molded7 said cut outs being.;l here shown semi-circular.

The side boards 21 and 22 are provided near their opposite ends in their upper edges with seats 2 here shown cmi-circular in form and which are designed to support cores :28 here shown semi-circular in form with their flat faces arranged flush with the upper edges of the board.

A. longitudinally disposed coro i251 is designed to be supported in the out out upper edges of tho partitions 25, said core being similar in cross sectional contour to the cores 2Q with its flat upper face arranged flush with the upper vfaces of said cores and with the upper edges of the boards.

In the use of the mold Q0, the parts being removable as shown in Fig. 7, the cement is poured around the cores 28 and 29 between them and the side boards 21 and 22 and be tween the transverse partitions 25, and completely fills the spaces surrounding these parts as is shown clearly in Fig. 8. After the poured cement hardens, the cores 28 and 29 are lifted out and the boards 2l and 22 separated by ren'ioving the rods and 24 and withdrawing the cotter pins Q6. After these boards have been removed` the tiles formed in the compartments between the partitions 25 may be readily removed and may be used for any purpose desired.

1vlVhen a conduit is to be formed. two of the tiles 3() are snperposcd with their hollow portions facing each other as shown in Fig. il, thus forming a tile with a circular opening 31 extending therethrough. In laying tiles of this character for use in this way, the lower members are first placed in position and earth tamped around them up to a point substantially flush with their upper faces. The cooperating tiles are then placed on the tiles so embedded as shown in Fig. 1l and are secured thereto by means of mortar arranged in the joints between the supcrposed tiles, a swab being preferably used to prevent the mortar filling in the bore in the. tiles. It understood of course. that as the tiles are laid, the swab is moved longitudinally so as to clean out any mortar which may drop into the interior of the tile.

From the above description it will be readilyv seen that the blocks or tiles constructed herein shown and described are eonilniratively light and may be easily laid at any level although the weight thereof may he varied .in construction b v increasing or diminishing the thickness of the walls. Y

While these tiles are. primarily intended to be used as drain tiles, obviously concrete forms may be so constructed as to produce a vbuilding block by merely extending or lengthening the edges thereof and the opening inside forms an air chamber in each layer of blocks.

Various changes in the form, shape, proportion and other minor details of construction may be made without departing from the principle or sacrificing any of the advantages of the claimed inventlon.

I Claim 2- l. ln a mold of the class described, longitudinally split resilient metal inner and outer casings of di'erent diameters, the edges of the slit of each easing being arranged in lapping relation, whereby the inner casing is normally contractable and the outer casing normally eXpansible, a cap having a i'iange to lit around the outer casing at one end thereof, a similar cap mounted on and secured to the inner face of said first mentioned cap and adapted to fit in said inner casing forming a reinforcement and spreader' therefor, a tubular member for insertion in the other end of said casing, and retaining bands arranged around the outer casing.

2. In a mold of the class described, longitudinally split resilient metal inner and outer casings of different sizes, the edges of the split being arranged in lapping relation whereby the inner casing is normally contractable and the outer casing normally eX- pansible, a cap having a flange t0 fit around the outer casing at one end thereof, a tubular member carried by the inner face of said p to fit Within the inner easing to hold it against collapse, retaining bands arranged around the outer casing, a tubular member for insertion in the other end of said inner easing, and centering fingers carried by the open end of the outer casing to engage the adjacent end of the inner casing to hold said end centered relatively' to the outer easing, said fingers having hooks, at their inner ends, the body portions of the lingers being arranged flat against the outer face of the easing and provlded at their upper ends with hook-like bends to fit over the edge of the casing and then folded again upon themselves and extended inwardly and outwardly to engage the core and hold it @ent/ered.

In testimony that I claim the foregoing as my own, I have hereto aiixed my signature in the presence of two Witnesses.

JOHN L. LAMB. lVitnesses:

W. R. TIDWELL, E. L. NEFF.

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