US912249A

US912249A - Machine for molding bases upon fence-posts.

Info

Publication number: US912249A
Application number: US42828508A
Authority: US
Inventors: Charles S Long
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-04-20
Filing date: 1908-04-20
Publication date: 1909-02-09
Anticipated expiration: 1926-02-09

Description

. e.-s. Lone. MAGHI'NE FOR MOLDING BASES UPQN FENCE POSTS. APPLICATION IUVJBD FEB; 8,. 1907. EENEWED APB. 20,1908.

Patented Feb. 9, 1909.

2 SHEETS-SHEET 1.

w i, M

C. S. LONG. MACHINE FOR MOLDING BASES UPON FENCE POSTS. A'PPLIGATION FILED rmm, 1907. BENEWBD APB. 20,1908.

Patented' Fb. 9, 1909.

CIK

the arrow there shown, Fig. 7, is a side view STATES CHARLES S. LONG, OF AURORA, ILLINOIS.

MACHINE FOR IVIOLDING B ASES 'UPON FEl'l'CE-POSTS.

Application iled February 8, 1907', Serial No. "6 L To all whom it may concern.'

Be it known that I, CHARLES S. LONG, a citizen of the United States, residing at Aurora, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Machines for Molding Bases upon Fenceelosts, of which the following is a description, reference being had to the accompanying drawings, forming a part of this specification, in which corresponding numerals of reference in the different figures indicate like parts.

The object of my invention is to provide simple, cheap and effective means for overcoming certain difliculties incident to the molding of bases formed from plastic material such, for example as asphaltum or asphaltum concrete upon metallic fenceposts. An important diflieulty in molding this material by compression arises from an inherent quality which is characteristic of the material, viz., that when compressed in mold havin@ a movable die, that portion of the material acted upon by the moving element will be more eompactly compressed than portions farther removed, resulting in a product, a portion of which will be very compact, while other portions will contain voids, thereby rendering it subject to injury from the action of the elements and particularly to that of frost. I accomplish said object in the manner hereinafter more particularly described and deiinitely pointed out in the claims.

In the drawings, Figure 1, is a longitudinal vertical sectional view of a mold embodying the features of my invention, said view being taken upon line 1-1 Fig. l, viewed in the direction of the arrow there shown, Fig. 2, is a plan view of the removable pallet, Fig. 3, is a vertical sectional view talren upon the line 3-, Fig. 1, viewed in the direction of the arrow there shown, Fig. l, is an end view taken upon the line 4 Fig. 1, viewed as therein indicated by the arrow, Fig. 5, is a side view of a portion of said mold, F ig. 6, is a vertical sectional view of a portion of said mold, said view being taken upon the line 6 6, Fig. 3, viewed in the direction of partially broken, of one of the vertical sliding` shields, and Fig. 8, is a sectional view in plan of a portion of the mold with one of said sliding shields, said view being taken upon the line S-, Fig. 5.

Specification of Letters Patent.

Fatented Feb. 9, 1909.

24. Renewed April 26, 1908. Serial No. 428,285.

Referring tothe drawings 1, 1, Figs. 3 and 5, represent parallel members constituting the side walls of an elongated frame, which are rigidly connected to each other by means of

end plates

2, 2, Figs. 1, 4, 5 and 6, the inner faces of which serve to guide a movable die 3, Figs. 1, 3 and 6. A similar frame consisting of side walls a, i and end pieces 5, 5, rigidly attached thereto, Figs. 1, 3, et, 5, 6 and 8, is removably 4superimposed upon said 'lirst named frame and adapted to register accurately therewith. Loosely resting against the inner faces of the side walls 4 of said superimposed frame are

shield plates

6, 6, shown also in Fig. 7, the length of which is slightly greater than that ofthe side rails 4. rThis is also true as to height. In order to hold said shields in place against the side walls, as well as to enable them to be moved vertically, they are loosely fitted in grooves 7, formed in the end pieces 5, as clearly shown in Figs. 6 and 8, and indicated in dotted lines in Fig. 4. Lugs 8, upon the ends of said shield-plates, Figs. el, 5, 6 and 7, serve to support them in normal position. rEhe inner faces of the shield-plates 6 are substantially flush with the upper inner faces of the die 3 as clearly shown in Fig. 3.

Loosely fitted between the shields is a die or follower 9, Figs. 1 and 3, the inner face of which is substantially semi-circular in cross section corresponding in this respect to that of the die 3, except that its are has a smaller radius. The object of making the lower die larger, is to provide for the insertion of a removable lining or pallet 10, Figs. 1, 2 and 3, which consists of a trough-like element formed from sheet-metal, adapted to it the contour of said die. A frame, consisting of bars 11, arranged to project at one end as shown at 12, and preferably in the form of a loop at the other, as shown at 13, is provided for lifting said pallet into and out of the die, the end plates 2 being notched as shown at 1li, Fig. 6, to receive said bars. The thickness of the shield plates 6 corresponds to that of the pallet bars 11 and said plates are adapted to rest upon said bars when the pallet is in position as shown in Fig. 3, for the purpose hereinafter stated.

Itigidly belted to each of the side walls, l, are vertical bars 15, which are connected by means of angle bars 16 rigidly attached thereto.

Notches 17, 1S, better shown in Fig. 5, are

provided for the insertion and serve as bearings for shafts 19, upon which are mounted veccentrics 2O adapted to roll upon friction rollers 2l supported in suitable bearings Jformed upon the

dies

3 and 9 respectively. The upper eccentrics are adapted to be operated by means oi levers 2L, and the lower ones, preferably by means ci cranks adapted to fit upon the squared ends 23, ll'igs. 3 and 4, of the eccentric shafts.

l make no claim herein to the die operating means described inasmuch as it has, in substantially the same form, been shown and described in Letters-Patent heretofore issued to me.

The end plates 2 and 5 at one end oi the mold, are cut away or notched to conform to the cross-sectional contour preferably oi a Y-bar 24 which is intended to form the post and is projected centrally into the mold as shown in Figs. l, 3, 4 and 5.

The operation oi said device is as follows: The upper die, together with the upper half of the frame, being removed and the die 3 moved to its eXtreme lower limit, the pallet is inserted therein. The upper trame is then placed in position with the parts 4 resting upon the parts l and the shield plates 6 upon the bars 11. The post 24 being placed in position with a predetermined quantity ci plastic material in the mold, the upper die is inserted and the eccentric shafts 1Q placed in position. VThe lower mold is then forced up to its iull limit by means ci the cranks and eccentrics. The presence ci' the shield plates 6, prevents the material from expanding laterally. rlhis being accomplished, the upper eccentrics are operated in lilie manner by means of the levers to depress the upper die and co .iplete the compression. in raising the lower die the shield-plates are pushed up by the action oi said die resulting in a perfectly Jformed base ci uniform density in all parts. As the plates 6 bear against the side walls 4 with more or less friction, the tendency is to cause said parts to be lifted with the plates. lhis may be prevented by means of springs 25, iiig. l, which are attached to the top oi the die 9 and arranged to bear upon the end plates 5. fis soon as the material oi the base shall have become set and in condition to be removed, the upper portion of the mold is detached, when the ost With its base thereon can be taken out by lifting the pallet from the lower die.

The compressing` of the material lrom opposite directions not only possesses the advantage of securing uniform density oi the material throughout, but it avoids all danger of bending the post and insures its alinement With the axis ot the base.

The advantage oi' the movable plates 6 is that it is necessary to provide lateral space above the upper edges oi the lower mold for the reception of the pallet-bars l1,

necessitates the making oi the walls of the lower mold correspondingly thick. Were the .walls of the member made to lill the sp ace between the walls 4 of the frame, there would be an cil-set or space upon each side between the edges of the molds when separated, into which the plastic material would enter, thereby not only forming a rib upon each side ci the base when molded, but would prevent a complete compression o'l the material where most desired. rllhe use of the movable plates 5, by filling these spaces when the molds are separated, enables a imite-edge tobe formed upon the mold 9 and prevents a lateral iiow of the plastic material so that it may be readily shaped to the exact form of the molds.

i-laving thus described my invention, I claim:

1. A machine oi the class described in' which is combined two separable mold trames, the walls of which are arranged to register with each other, a movable die forming a halt' mold fitted in each of said f nes, a framework connected with one of frames, means Jfor holding a post in a predetermined position between said diesk and compression means connected with said framework for actuating said dies independently ci each other.

2. A machine of the class described comprising movable half molds arranged in stationary separable guide Jframes, means tor actuating said molds independently of each other, a removable pallet adapted to fit lwithin one of said hall2 molds, and movable shield-plates upon opposite sides of said opposite hall" mold arranged to project beyond the same to fill the voids at the respective sides when the molds are separated 'from each other and prevent a lateral spread oi the plastic material when compressed.

3. A machine of the class described having separable die irames, a movable die forming a counterpart half-mold located in each of said trames, the curve of the inner tace of one ci said dies 'forming a longer radius than that oi the other to permit the insertion therein oi a removable pallet, movable side shieldsbetween the irame and the sides of said smaller die, said side shields being arranged to rest upon the edges oi said pallet when inserted, and means for actuating said dies independently oic each other.

4. A machine of the class described, having separable die frames, a movable die 'forming a half mold located in each of said. frames, the curve of the inner face of one of said dies having a longer radius and a shorter arcthan that of the other, a removable pallet adapted to fit therein, the curve of the inner face oi' which corresponds substantially in radius and length oi' aro with that ci the opposing die and movable side which l shields upon opposite sides of said opposing die the edges of Which are arranged to rest upon the edges of said pallet.

5. A machine of the class described, having separable die frames, a movable die forming a half mold located in each of said frames, the curve of the inner face of one of said dies having a longer radius of Which are arranged to rest normally upon the edges of said pallet, and means for preis venting the separation ofthe frame elements When the die holding said pallet is moved to compress the material therein.

In testimony whereof, I have signed this andashorter specification 'in the presence of tWo subarc than that of the other, a removable scribing Witnesses, this fifth day of Febpallet adapted to t therein, the curve of the ruary, 1907,

inner face of which corresponds substan- CHARLES S. LNG. tially in radius and length of arc With that of `Witnesses:

the opposing die, movable side shields upon D. H. FLETCHER, opposite sides of said opposing die the edges CARRIE E. JORDAN.