US743898A - Bait for drawing glass. - Google Patents

Description

No. 743,898. PATENTED Nov, 10, 1902.. J. H. LUBBERS.

BAIT FOR DRAWING GLASS. APPLICATION FILED MAR. 25, 190,3.

mm H

INVENTOR N0..743,s9s. PATENTED NOV.10,1903.

- J. H. LUBBERS.

BAIT FOR- DRAWING GLASS.

A PLIOATIOH rum) ma. 25 1903. r no MODEL. P agn-nms-snnwz.

'lil

.H mph:

uwsrrroa manonms versus no. PHGYU-LITHD WASHINGTON u c UNITED STATES Patented November 10, 1903.

PATENT @FFICE.

JOHN H. LUBBERS, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR TO JAMES A. CHAMBERS, TRUSTEE OE PITTSBURG, PENNSYLVANIA.

"BAIT FOR DRAWING GLASS.

SPECIFICATION forming part of Letters Patent No. 743,898, dated November 10, 1903.

Application filed March 25, 1903. Serial No. 149,533. (No model.)

To all whom it may concern:

Be it known that 1, JOHN H. LUBBERS, of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Bait for Drawing Glass, of which I the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which-- Figure 1 is a front elevation, partly broken away, showing one form of my improved bait. Fig. 2 is an end elevation of the same, and Figs. 3 and 4 are views similar to Figs. 1 and 2, respectively, showing another form of the bait.

My invention relates to the forming of glass sheets, cylinders, or other'artioles by drawing them upwardly from a bath of molten glass and is designed to aiford a simple, cheap, and long-lived bait, which will not be liable to crack or break the article being drawn.

To that end it consists in a bait having a series of depending pins or rods arranged to enter the bath, these pins being loosely mounted, so that they will adjust themselves independently of each other.

It also consists in a bait having a series of removable pins with flattened heads, the pins being loosely held by the heads within the bait-body, and, further, in the construction and arrangements of the parts,.as hereinafter more fully described and claimed.-

In the drawings, referring to the form of Figs. 1 and 2, 2 represents the body of the bait, which preferably consists of two sheets of metal riveted together and having end arms 3 3, which rest upon carrying-bars 4, supported by the vertically-movable frame of the drawing apparatus. The lower portions ofthe two sheets are bent or curved outwardly in opposite directions, as shown at 11, and their edge portions are bent inwardly and upwardly to form inner ledges 5. The pins or rods 6 preferably consist of wire nails, which are dropped through holes in a strip of metal 7, which is preferably pressed into channel form. This nail-carrier is arranged to slide within the lower recess of the bait body, the flanges 8 of the nail-carrier resting within the coped or ledge portions in the recess. The nail-carrier may then be held in place by a slide 9, which is guided on flattened end portions 10 ofthe sheets.

In using the device the bait is lowered until the nails enter the molten bath, and the bait is then raised in the usual manner to draw asheet upwardly from the bath. The

nails being loosely mounted are free to accommodate themselves both in entering the.

bath and during expansion or contraction of the glass during cooling, annealing, &c.

In Figs. 3 and 4 I show another form of the bait, wherein the nail-holder is done away with. In this form the lower portions of the sheets 2 are bent outwardly, as before, and thence bent inwardly andnearlyhorizontally, leaving a space between their edges of a width as large as the diameter of the nailbody, but narrower than the width of the nailshead. The broad-headed wire nails 6 are then slipped in from the end, their heads holding them apart, so as to space them. They may be held in place by one or two end slides 9', arranged as in the first form.

The advantages of my invention result from the use of the loosely'mounted pins or rods, which have suficient freedom of movement to allow them to accommodate themselves to the glass. When one sheet has been drawn and removed from the pins, the remaining web of glass will hold them in position. The pins or nails may be easily replaced, and the construction is simple and 2. A bait for drawing glass having a series of separated depending pins with enlarged heads loosely supported in the bait; substantially as described. I p

3. Abaithavingalowerlongitudinalgroove with ledges, and a series of depending pins loosely supported on said ledges; substantially as described.

4. A bait for drawing glass having a iongitudinal lower recess with an open slot and I slot, said bait having a closure for the end of to side ledges, and a series of pins extending the recess; substantially as described.

downwardly through the slots and looselysup- In testimony whereof I have hereunto set ported on the ledge portions, said pins having my hand. enlarged heads; substantially as described. JOHN H LUBBERS \Vitnesses:

GEO. B. BLEMING, C. P. BYRNES.

longitudinal recess with an open end, and a narrow slot opening into its lower portion,

5. A bait for drawing glass having a lower i and pins having enlarged heads Within the l

Images