US1124823A - Glass-drawing apparatus. - Google Patents

Description

L. A. THORNBURG.

GLASS DRAWING APPARATUS. APPLICATION FILED JUNE 17, 1911.

1,1 24,823, Patented Jan. 12, 1915.

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WITNESSES INVENTOR s rare orrron.

IQITflGOLN rnonnsone, or Mortars, INDIANA, ASSIGNOR TO wmnow GLASS MAGHXNE COM?ANY, HEW! JERSEY.

F PITTSBURGH, PENNSYLVANIA, A CORPORATION OF GLASS-DRAV7ING APPARATUS.

Specification of'Letters Eatent.

Patented Jan. 12, 1915.

Application filed June 17, 1911. Serial No. 633,647.

r all whom it may concern '5- iniown that I, LINCOLN a resident of Muncie, in the countyor Delem are and State of Indiana, have 111- rented a new and useful Improvement in Glass-Drawing Apparatus, of which the following is a full, clear, and exact descript-ion, reference being bad to the accompanying drawings, forming part of this specification, in which-- Figure l is vertical transverse sect on if my improved apparatus; Fig. 2 1s a slde ation of the same. v invention relates to the drawing of from pots or receptacles, and its ob ect is to provide an improved pot system which may be used either in single or double form.

in the drawings, in which I show a preferred form of my apparatus, 2 representsa double pot bottom, preferably circular in form, and having projecting rims 3, on 0pposite sides, with projecting integral trunnions l, l, which are preferably angular in cross section at their outer ends. The intermediate portions 5 of the trunnions are preferably circular where they project through vertical slots in the side walls 6, 6, of the furnace chamber. The furnace 7 maybe of any desirable form, for example, square in cross section with outer steel or iron plates 8, inclosing the brick or other refractory lining 9.

The topstone 10 has a large central hole with a depending circular ring 11, these parts being preferably formed-in one in tegral piece of clay. The opening is preferably circular in form. The ring 11 and the rims of the pot bottom are preferably so related that the rims fitneatly and closely about the depending ring to make a close joint and to cut off the hot currents from the drawing point. The depending flange or ring 11 is preferably so constructed that when in operative relation to the pot bottom 2, the lower edge of said flange will fit inst the upper surface of said bottom nin the rims 3.

iolds are'preferably placed on the drical trunnions between the slotted rectory lining and the slotted furnace these shields having holes to fit the indrical trunnions. The. polygonal end one of the trunnions it within correlanding sockets 13, secured to metal trunnions 14, which rest within vertically slotted cured pin-ions 17, these pinions engaging I short racks 18, which slide within the bottom of the forked portion and are actuated by suitable connections, such as links 19, pivotally connected with levers 20, secured to a common shaft 21. The construction of the operating mechanism is the same at both sides and a single hand lever 22 may be used to rock the shaft and turn the pot on its trunnions.

The vertical standards 16 extend through suitable guideways 23, and at the lower end are connected by short links 2 f with levers 25, pivoted to the sides of the furnace'at 26. The links 24- are formed in two parts with a turn buckle connection between them, so that by turning the nut,-the link may be varied in length, thus adjusting one side relative to the other, so that thepot will fit that the pot may be locked in any desired position.

Into the well below the furnace projects a number of gas jets 32, adapted to melt the glass from the bottom face of the reversible bot-tom.

In order to take the'weight of the shields off the pot trunnions, I preferably pro vide vertical supports 83, on the hearings, to which are adjustabl y secured hooked rods 34, engagin eyebolts 35, secured to the tops of the .liields. I

in using the appr ratus, the bottom is raised into the position shown in Fig. 1, the molten glass is ladled' or otherwise fed into the ring of the topstone and rests on the top face of the bottom. The drawing is then carried out in the usual way, and when completed, the pot bottom is lowered, then turned around the depending ring of the topstone. Another portion of glass is then fed in and during the next drawin the glass remaining 'on the bottom face 1s melted 01f by the gas jets or by hot products of a regenerative furnace.

The advantages of my invention result from the use of a turning pot bottom in connection with the separate-ring against which the bottom fits.

The pot bottom may be of single form, that is, with only one receivin bottom face; the rim on the bottom may t against the bottom of the depending ring, and other changes may be made without departing from my invention.

I claim I 1. Ihe combination with a. rotatable glass pot havinga'rim, of a topstone having a depending flange which fits within said rim and extends to the bottom of the pot cavity, substantially. as described.

2. The combination with a rotatable glass pot having a rim, of a tbpstone having a depending flange which fits within said rim,

together with leveling means for the pot to adjust it to properly receive said flange,

substantially as described.

3. The combination with a rotatable glass pot havingv a rim, of a topstone having a depending flange which fits within said rim and extends to the bottom of the pot cavity,

- together with means for verticallyseparatingflthepot and topstone, substantially as described, V

4. The combination with a rotary reversi tical movement of said bottom, said bottom having a relatively shallow pot forming cavitytherein, of a topstone having a de-- pending flange adapted to fit within said pot cavity and form the sides of the pot;

substantially as described' '6. The combination with a pot bottom mounted for rotary and also for vertical movement, and having a relatively'shallow pot forming cavity in both its upper and its lower surface, said cavities being surrounded by a shallow ri;n,'of a topstone having a depending flange adapted to fit within either of said rims, and to cooperate with the pot bottom to form-a complete pot in either of the reVersed positions of said bottom; substantially as described.

In testimony whereof, I have hereunto set my hand.

his LINCOLN A. X THORNBURG.

' mar Witnesses:

JoHN F. Mnnnnrrn, CARRIE F. MoDnnMo'r'r.

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