US1029095A - Mold. - Google Patents

Description

E. J. WILBER'.

MOLD.

APPLICATION FILED 0012a, 1910.

1,029,095. Patented June 11, 1912.

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COLUMBIA PLANOGRAHI Cm, WASHINGTON. n. c.

E. J. WILBER.

' MOLD.

1,029,095. APPLICATION mum 0012s, 1910. Patented June 11, 1912. 2 SHEETS-SHEET 2.

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Attorneys UNITED STATES PATENT OFFICE.

ELMER J. WILBER, OF BROOKLYN, MICHIGAN.

MOLD.

To all whom it may concern:

Be it known that I, ELMER J. WILBER, a citizen of the United States, residing at Brooklyn, in the county of Jackson and State of Michigan, have invented a new and useful Mold, of which the following is a specification.

It is the object of the present invention to provide an improved construction of mold designed chiefly for use in molding tiles.

One feature of the invention resides in the novel arrangement, in a mold of this type, of the mold sections, the means for moving the sections, and the pallet over which the sections are movable.

Another feature of the invention resides in a novel core raising and lowering mechanism provided in connection with the core of the mold.

\Vith the above and other objects in view, the invention resides in the general construction and arrangement of parts substantially as hereinafter described and claimed and as shown in the accompanying drawings in which,

Figure 1 is a view partly in front elevation and partly in longitudinal section illustrating a mold constructed in accordance with the present invention. Fig. 2 is a top plan view thereof. Fig. 3 is a horizontal detail view thereof. Fig. A is a vertical sectional view from the front to rear. Fig. 5 is a view similar to Fig. 1 illustrating a slight modification of the invention. Fig. 6 is a view similar to Fig. 2 illustrating the form of mold shown in Fig. 5. Fig. 7 is a horizontal sectional view through the mold shown in Fig. 5. Fig. 8 is a vertical sec tional view from front to rear of the mold shown in Fig. 5.

In the-form of the invention shown in Figs. 1 to 4 inclusive, the mold is illustrated as embodying a frame or table including corner uprights 10 a top indicated by the numeral 11, and cross braces 12 connecting the lower ends of diagonally opposite ones of the uprights 10. The top 11, for a purpose to be presently explained, is comprised of two sections having spaced parallel edges extending from front to rear at opposite sides of the middle of the table. The sections of the table top are supported upon front and rear cross pieces 13 and the pallet board of the mold is indicated by the numeral 15 and is movably disposed upon the Specification of Letters Patent.

AppLieation filed October 3, 1910.

Patented June 11, 1912.

Serial No. 585,078.

upper edges of the said cross pieces 13 and confined between the said spaced parallel edges of the sections of the table top, there being teeth 16 secured upon the under side of the pallet board near the front and rear edges thereof and cooperating with the two said cross pieces 13 to hold the pallet board against sliding movement forwardly or rearwardly.

The corner uprights 10 project above the plane of the table top 11 and secured to these uprights and extending across the table sections from front to rear are boards indicated by the numeral 17. Similar boards 18 are mounted, one upon each of the table top sections 11, inwardly of the respective boards 17 and braces 19 serve to space these boards 17 and 18 at the ends of the table. Slidably mounted through each set of boards 17 and 18 is a rod 20 carrying at its inner end a mold sect-ion 21 of substantially semi-cylindrical contour. The mold sections 21 are of such proportions and are so assembled with the respective rods 20 that they rest at their lower ends slidably upon the table top sections 11 and are also slidable over the pallet board 15 when the rods 20 are reciprocated. As illustrated in Fig. 2 of the drawings, the mold sections 21 have their concaved sides presented toward each other so that when the rods 20 are slid toward each other, the mold sections will be brought together to afford a cylindrical mold resting upon the pallet board 15. In connection with the mold sections 21 and their rods 20, there is provided means operable to move the sections 21 toward or away from each other, simultaneously and to the same degree. The means mentioned above embodies a pair of lovers, one located at each end of the table and indicated by the numeral 22, each of these levers being supported for rocking movement upon a transverse pivot rod 23 passing through the lever near the lower end thereof. At its upper end, this lever is slotted as at 24 and a pin 25 is secured to the outer end of stem 20 and engages slidably with the slot 24 of the respective lever 22. Connected pivotally to the lower end of each lever is a rod 26 and at their inner ends, these rods connect to an operating lever 27 pivotally mounted as at 28 upon the cross braces 12, the points of pivotal connection of the rods 26 with the lever 27 being located on opposite sides of the pivot 28. From an inspection of Fig. 3 of the drawings it will be readily understood that when the lever, 27 is swung to the left in the said figure, the lower ends of the levers 22 will be simultaneously swung away from each other and to a greater degree and that as a consequence, their upper ends will be swung toward each other and the mold sections 21 will be correspondingly slid until their vertical edges abut whereupon the mold is ready to receive the material to be molded therein. At this point, it will be stated that the pivot 28 is in the nature of a rigid standard which serves some other functions as will presently be made clear.

The core of the mold is indicated by the numeral 30 and is formed with a bore receiving the standard 28, the core in this manner being mounted for vertical sliding movement upon the said standard. When slid up upon the standard 28, the core 30 will project through an opening 31 formed in the pallet board 15 and to a distance above the plane of this board equal. to or greater than the height of the mold section 21. Secured to the lower end of the core 30 is a head indicated by the numeral 32 and secured to the upper face of the head 32 at each end thereof is a chain 33 which is trained over a pulley 34 supported by a hook 35 beneath the pallet 15. The chains 33 are led forwardly from the pulleys 34 and are wound several times about a drum 36 upon a shaft 37 rotatably mounted at the front of the table. After being passed several times about their respective drums, the chains 33 are led downwardly rearwardly and about pulleys 38 mounted upon the cross braces 12 after which the chains are secured to the under side of the head 32 at the ends thereof. A crank handle 39 is fixed upon the shaft 37 at one end thereof and by rotating this crank handle the chains will be caused to simultaneously travel in one direction or the other, movement of the chains in one direction tending to elevate the head 32 and core 30 carried thereby, and travel in the other direction serving to lower the said head and core.

In using the mold, the parts being in the position shown in Fig. 1 of the drawings, the operating lever 27 is swung to the left thereby moving the mold sections 21 into closed position. The plastic material to be molded is then poured into the mold thus afforded and allowed to set. After it has remained in the mold a sufficient length of time, the lever 27 is swung to the right thereby drawing the mold sections 21 away from the molded tile or other article and leaving the same upright upon the pallet 15. The crank handle 39 is then rotated so as to lower the core 30 after which the pallet is lifted bodily from the table and carried tothe curling room or any other desired place and another pallet is disposed upon the table. The core 30 is then elevated by rotating the crank handle 39 and the above described operation is repeated.

In the form of mold shown in Figs. 5 to S inclusive, the core raising and lowering mechanism is identical with that of the core shown in Figs. 1 to 4 inclusive and their corresponding parts are indicated in Figs. 5, 6, 7 and 8, by the same reference numerals as in Figs. 1, 2, 3 and 4. Also, the table for the mold is of substantially the same structure as well as the pallet board, the only difference between the two boards being that in the form to be now described, the pallet board is made considerably longer than the board shown in the first described form of the invention and the means provided for advancing and retracting the mold sections is mounted di rectly upon the pallet board itself.

The mold section retracting and advancing means above mentioned consist of a pair of independent levers 40 connected by short links 41 to one of the mold sections 21. In this form of the invention, each mold section 21 is provided with a base 42 slidably mounted between guides 43 upon the pallet board 15 and in this form of the invention the levers 41 are independently rocked to ward or from each other to bring the mold sections together or to separate them and after separation, the plastic material having been molded and allowed to set, the core is lowered and the pallet together with the mold section and the advancing and retracting means therefor is removed and utilized in the same manner as before described.

What is claimed is A mold, having a framework, a table sup ported therein, a pallet board located centrally of the table and provided with a central, aperture, a cylindrical standard mounted in the framework and disposed below and concentrically to said aperture, said standard being of a lesser diameter than the aperture, a pair of spaced vertically disposed boards carried by the framework upon opposite sides of the pallet board, two mold sect-ions normally disposed upon opposite sides of the pallet board, a rod connected to each section and mounted for reciprocation in each respective pair of boards, a core disposed for vertical sliding movement upon the standard and within the aperture of the pallet board, manually operable means for imparting a sliding movement to the core, a lever pivoted intermediate of its ends to the lower end of the standard for horizontal swinging movement, two oppositely extending rods connected at their inner ends to said lever at opposite points and equidistantly from the pivot thereof,

end two vertically disposed levers mounted as my own, I have hereto affixed my signa- 111 the framework at opposite ends thereof ture in the presence of two Witnesses.

and havin their u )per ends ivoted to the 1 respective mold sdction rods and to the LLMER WVILBER' 5 respective rods of the horizontal swinging Witnesses:

lever. WILSON NEELY, In testimony that I claim the foregoing CHAS. KENSLER.

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

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