US880343A - Press-mold for making insulators. - Google Patents

Description

No. 880,343. PATENTED 1" :1a.25,190a.-

H. WAGNER.

PRESS MOLD FOR MAKING INSULATORS.

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PATENTBD FEB. 25, 1908 H. WAGNER. PRESS MOLD FOR MAKING INSULATORS.

APPLICATION FILED 06124, 1906. RENEWED JAN. M1908.

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HENeYwAeNEa-or ANDERSON, INDIANA.

PRESS-MOLD FOR MAKING- INSULATORS.

Application filed October 24- 1906' Serial No.

To all whom it may concern:

Be it knownv that I, HENRY WAGNER, a citizen of the United States of America, re-

siding at Anderson, 'in the county of Madiinsulators may be made at a single operation;

second, to provide an improved construction and arrangement of the parts of the mold whereby a stronger mold is produced and a stronger and denser insulator may be made;

third, to'provide simple and ellicient means for simultaneouslyprojecting and retracting the socket-forming elements; and, finally to generally simplify and improve the construction and increase the practical efficiency of press-molds of this type..

In the accompanying drawings,-Figure 1 is a vertical longitudinal section through a press-mold embodying my invention. Fig. 2 is a horizontal section through the same. Fig. 3 is a vertical cross section.

Referring to the'drawings, thenumeral 1 designates a base, upon which is supported a mold comprising a bottom or base'sec'tion 2 and a body or top section3, the latter be-.

ing constructed of two or more parts .4 and 5 adapted to be disconnected for the con-. venient removal of the formed insulators or other .articles. The sections of the mold top orbody 3 nia be held. connectedby any preferredtype o fastening. means, whichl have not deemed it necessary to describe.

The mold body 3 is provided with a series of mold chambers or cavities .6, while the base section 3 ,isformed with upwardly projecting core portions 7' which extend into the lower ends of said cavities and. form the recesses in the lower ends of the insulators.

.A chamber or recess 8 is provided in the top of the mold section 3 to receive the molten glass or other material and also toqreceivea plunger 9, whereby such material is forced through ducts or passages 10 into the respective mold chambers.- The plunger may be operated in any preferred manner.

Specification of Letters Patent.

340.393. Renewed January 9. 1908. Serial No. 410.010-

Patented Feb. 25, 1908.

Arranged upon the underside of the base section 2 of the mold is a supporting plate 11 provided with chambers 12 equal in number to and arranged below the mold chambers, and also provided with threaded assages 13 communicating with said cham ers 12. In the chambers 12 are arranged gear nuts 14. These gear nuts are arranged to operate forming devices 15, comprising-screws fitted at their lower endsin the threaded openings 13 of the supporting plate and projecting upwardly through openings 16 in the mold section2 into the mold cavity 6. projecting ends of these screws form the usual threaded sockets in the insulators.

' Each gear nut 14 comprises a pinion hav-' ing a projection 17 engaging the threads of the cooperating. screw, which extends througha central opening in the pinion, the construction being such that when the inion is turned in one direction or the other t e screws will be rotatedbytheir threadedengagement inthe bearing openings 13 and will be caused to move vertically, so that the upper ends thereof. will move downward in the mold chambers to disconnect them from the. formed insulators, while an upward 'movement thereof will project the screws into the mold chambers for the succeeding operation. longitudinally in the supporting plate 1 1 with The upper Arack bar 18 isarranged to slide.

its teeth in meshing engagement withthe. teeth of the gear nuts 14 and is-pr'o-vided at 7 one end with'a handle or lever by means of which it may be manually reciprocated, although'power mechanism of any preferred character may be employed for th1s operation. When the rack bar is. moved in onedirection all the'pinions will be turned to project the forming screws, while a reverse movement of the rack bar will actuate the ipinions in the opposite direction to retract the forming screws. By this means forming screws cooperating with the several mold chambers may be simultaneously pro'ected and retracted for use in the operation 0 making a lurality of insulators and to release them; cm the. formed insulators to permit of theremoval of the latter.

other objects may be formed at one time, thus enabling'alarge number of insulators to will also be observed thatthe projecting ends It will be ovser'ved that the construction provides a plurality'of independent molding devices, by which a seriesof insulators O1" be manufactured within a given period. It

of thescrew formers project from below 'IllOlLl is rovided, and the force and weight mold cavities from above. 'structionand arrangei'nent oi the parts a stronger andmore' durable type of pressof' th'e p unger are both exerted-to press the molten material into the .mold chambers,

whereby the material may 'becompressedto a higher degree of density and stronger and more durable insulators formed.

Having thus described the invention, what is claimed as new, is: I

1. A mold of the character described comprising a base provided with chambers open at one side and having threaded openings below the chambers, a body supported upon the base, said body and basehaving cooperating portions forming mold cavities arranged above said chambers, said cavities being provided with inlets, means for forcing th e plastic material through the inlets into the cavities,

.a series of forming screws projecting upwardly through the base and into said cavities, the screws being engaged at their lower ends with threaded openings, gear nuts engaged with the screws and arranged within the said chambers, said nuts being partially exposed through the open sides of the chambers, and. a rack bar slidably supported on the base adjacent the open sides of the chambers and meshing with the gear nuts.

the body and base A mold of the character described comprising a basehaving a series of vertical openings, a mold body sup orted upon the base,

being provided with cooperating ortions forming a series of mold chambers ,a ove the openings, said mold chambers being provided at .theirupper ends with inlets, [means for forcing the plastic materialithrough saidchambers into the inlets, a supporting plate detachably mounted below the base and provided with. a series. of chambers open at one side and threaded openings below and communicating with said chambers, forming screws projecting upwardly through the openings in the base, and engaging the screw threaded openings in the supporting plate, gear nuts engaging said screws and arranged in the chambers of the supporting plate, said nuts being partially exposed at the open sides of the chambers, and a rack bar slidably supported upon the supporting plate and meshing with the exposed portions of the gear nuts, whereby the latter may be turned in one directionor the other to simultaneously project or retract the forming screws. i

In testimony whereof, I a'Hix mysignature in presence of two Witnesses.

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