US1103247A - Fence-post mold. - Google Patents

Description

o. BAKER. FENCE POST MOLD. APPLICATION FILED DBO. 4, 1903.

1,103,247. Patented July 14,1914,

WITNESSES: v OR: g

THE NORRIS PETERS c0" PHOTv-LITHQ. WASHINGmN. D, C.

BERT c. BAKER, or ros'ronrA,

OF ONE-HALF TO ASA M.- SMIT'H, OF FRAIBIE DEFOT, Oil-I10,

EARL SCOTT SMITH, OF TOLEDO, OHIO.

01-110, ASSIGNOR, er manor AND ransnn ASSIGNMENTS;

AND ONE-HALF TO FENOEQPOST MOLD.

Specification of Letters Patent.

Patented Julyld, 191.4.

Application filed December 4, 1909. Serial No. 531,311.

To all whom it may concern:

Be it known that I, BERT G. BAKER, a citizen of the United States, residing at Fostoria, in the county of Seneca and State of Ohio, have invented certain new and useful Improvements in. Fence-Post Molds; and I do 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, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to an apparatus for the manufacture of concrete fence-posts, and its object is to rovide a cheap, simple and effective device for the molding of several of such posts simultaneously, and for the manufacture of large numbers of posts with the use of comparatively few molds.

I attain these objects by means of the devices, construction and arrangement of parts hereinafter described, and shown and illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of my apparatus, with some of the molds removed and with one of the molds broken away, and Fig. 2 a perspective View, on an enlarged scale, of one of the sheet metal molds hereinafter referred to, detached.

In the drawings, a horizontal rectangular frame is composed of end-pieces 1 and sidepieces 2-3, the frame being supported at each corner by legs 4, suitably braced in connection with the frame, as at 5.

6-6 are trough-like sheet metal molds tapering regularly from one end to the other and of such internal form in cross section as to give the article molded therein a T- shape, so that the post or article formed in the mold shall have a comparatively broad flat side, the opposite side being provided with a heavy tapering rib. The external form of the post to be molded will be obvious from the internal form of the mold, as illustrated in Fig. 2. The taper of the molds is such that when two molds are placed side by side with the broad end of one in the same plane with the narrow end of the other, the two molds, at their upper margins, will present substantially a rec- 'large and tangular outline. Any number of pairs of these molds disposed with their upper margins and their ends in corresponding planes will, in like manner, preserve the rectangular form, as illustrated in Fig. 1. The inner side of each-of the end pieces 1 is provided with lugs 7, adapted for the reception and support of the ends of the horizontal flanges 6 of the sheet metal molds 6, these lugs being designed to receive in alternation the small ends of the neighboring molds. When the frame is filled with the sheet metal molds thus arranged, it presents the appearance of a table having an unbroken upper surface of deep, longitudinal, tapered corrugations. The soft fresh concrete may be dumped and spread upon the top of the table thus prepared. The concrete being now stroked with a straight edge, the mass will present a smooth upper surface.

Owing to the length and flexibility of the sides of the trough-like molds, the weight of the semi-liquid concrete tends to cause the molds to spread near their middle. To overcome this difficulty and to facilitate the removal of the molds, when filled, from the frame, the sidebar 3 is detachable from and adjustable upon the frame. This is efiected by means of stout threaded bolts 3 projecting from the ends of the end-members 1 and passing through holes in the bar 3, near their ends, there being on the outer end of each of the bolts a. stout hand-nut 3. By setting up these hand-nuts, the bar 3 is forced powerfully inwardly compressing the contacting sides of the series of molds into proper form and alinement. The concrete having been allowed to set sufliciently, the bar 3 is removed and the molds with their contents are, one by one, removed from the frame and set uprigat upon their larger ends. Now, owing to the taperform of the mold, the mold may be slipped upwardly upon the hardening concrete and thus quickly and easily disengaged from the tapered cast. This operation is aided by the tendency of the sides of the molds to spring away from the concrete when released from the side-pressure of the bar 3. The advantage of this construction of molds is that the molds and the posts may be separated as soon as the post is sufiiciently set to support its own Weight endwise, instead of its being necessary to alloW heretofore, process is completed, 7 thus permitting the manufacture of a large number of posts by the use of a comparatively few molds.

the post to remain, as

Having described my invention, What I claim and desire to secure by Letters Patent 1s,-

1. Ina device of the described character,

a trough-like mold having resilient sides, a

support for the mold, and means for commold uniformly in the mold until the hardening and uniformly co pressing the sides pf the molds throughout their length.

3. In a device of the described character, a frame having a removable side, a series of trough-like sheet metal molds tapered from end to end, means for supporting the ends of the molds Within the frame with their larger and smaller ends in alternation, and means for the adjustment of said removable side, whereby the sides of the series of molds may be simultaneously. and uniformly compressed throughout their length.

In testimony whereof I afliX my signature in presence of tWo witnesses.

" BERT o. BAKER.

Witnesses: V

GEO. E. REED, Asa M. SMITH.

Copies of this patent may be obtained for five cents each, by addres Washingtoml). G.

sing the Commissioner of Patents.

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