US689233A - Leer for annealing plate-glass. - Google Patents

Description

Patented De'c. I7, |901.

' J. SCHUBERT.

LEER FOR ANNEALING PLATEGLASS.

(Application led June 21, 1901,)

`2 Sheets-Sheet I.

(No Model.)

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Patented Dec. I7, 190|.

.1. SCHUBERT.v

LEER FR ANNEALING PLATE GLASS.

(Application ala June 21, 1901.)

..2 Sheets-Sheet 2 (No Model.)

INVENT'U R.-

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UNITED STATES PATENT OEEICE.

JOSEPH SCHUBERT, OF FORD CITY, PENNSYLVANIA.

LEER FOR ANNELING PLATE-GLASS.

- SPECIFICATION forming part of Letters Patent No. 689,233, dated December 17, 1901.

Application tiled June 2l, 1901. Serial No. 65,439. (No model.)

T0 all whom t may concern.'

Be it known that I, JOSEPH SCHUBERT, a citizen of the United States, residing at Ford City, in the county of Armstrong and State of Pennsylvania, have invented certain new and useful Improvements invLeers for Annealing Plate-Glass, of which the following is a specification, reference being had therein to the accompanying drawings.

This inventiohvrelates to leers for annealing plate-glass, and has particular reference to improved means for moving the plates progressively through the leer from the inlet end thereof to the cutting-table.

Leers now in general use are provided with mechanical devices, such as rods and chains, which either sustain the plates Wholly above the leer-floor or lift the same therefrom while advancing them. Such manipulation of the glass is objectionable, as the opposite faces thereof are subjected to unequal temperatures, on account of which the plates frequently break or crack. In addition the varying level of the devices referred to and their engagement with only portions of the glass area frequently result in sagging and distorting of the plates. The most successful results are secured when the glass is maintained on a perfectly flat surface without manipulation, save forward movement, until thoroughly annealed andin condition for cutting.

It is therefore the primary object of thel present invention Ato provide means for advancing the plates on'the leer-floor through the entire length of the leer without lifting or other manipulation. v

The invention consists in the novel features of construction and in the combination and arrangement of parts hereinafter fully described and claimed, and illustrated by the accompanying drawings, wherein- Figure 1 is a sectional plan view of a portion of the length of a leer constructed in accordance with my invention. Fig. 2 is a longitudinal sectional view of the saine, thefor- Ward end thereof being shown in side elevation. Fig. 3 is an elevation of the opposite side of the leer from that shown in Fig. 2. Fig. 4 is a side elevation of a portion of the leer, the side wall being removed to illustrate the relative positions of the operating parts, the plate-moving devices being shown in position for advancing the plates in full lines and in dotted lines raised free of the plates and readyv to be moved back for a new hold. Fig. 5 is a cross-sectional View on line 5 5 of Fig. 1. Fig. 6 is a rear end elevation, the mechanism being shown in operative position in full lines and raised, as when moving backward for a fresh hold on the glass, in dotted lines.

Referring to the drawings, 2 represents the smooth level door of thelleer; 3, the side walls thereof; 4, the vaulted roof or ceiling; 5, the

inlet-opening from the annealing-ovens, (not shown;) 6, the discharge or outlet opening, and 7 the cutting-table.

8 represents shafts arranged .transversely at suitable intervals in the upper portion of the leer, being mounted in bearings 9, seated in walls 3, and depending from each shaft are the two pairs of parallel arms 10, provided ou theinner sides of their lower ends with the separated rollers l1. The arms and rollers of the several shafts are in line throughout the length of-the leer, and the rollers form supports for the horizontal angles of the elongated T-bars 12. The webs of said bars depend below the rollers, and secured thereto vare the strap-hangers 13, which at -their lower ends carry the push-bars 14, which eX- tend across and are in close proximity to iioor 2, the said bars being provided on their rear sides with braces 15, extending to T-bars 12. The several shafts 8 are extended at one end and provided with crank-arms 8', and all of said cranks are connected by the elongated sectional rod 16. At each crank connection the said rod is preferably provided with a turnbuckle 16, whereby the length of the rod may be readily increased or diminished and whereby section s of the rod may be removed or replaced, as may be required. One of the shafts 8 is provided with a crank-arm 17, which has loose connection with cross-head 18, the latter being actuated by piston-rod 19, operating in cylinder-*20. the T-bars project through the leer-wall and are connected .by bar 21, and depending from this bar are pins or bolts 22, which are movable vertically in apertures formed in the cross-head bar 23, thelatter being actuated by piston-rods 24 of power-cylinders 25, arranged on opposite sides of the leer.'

The rear ends of With the .mechanism inthe position shown in Figs. 1, 2, and 4 push-bars 1-t are in engagement with the rear edges of the glass plates 26, so that when power is applied from cylinders 25 T-bars 12 are moved longitudinally outward over hanger-rollers ll, moving or.

pushing therewith over the flat leerfloor the plates 26. A push-bar is provided for each plate, sot-hat the latter are not brought in contact with eachother while passing through the leer. Each of the bars 14 is shown providedovitlra bottom lip or langellt', which projects slightly beneath the plate, assuring a firm hold for the push-bar, though said lips or lianges are not absolutely essential and may, it' desired, be omitted. The stroke of T-bars 12 is equal in length to the distance between adjacent push-bars 1l, so that at each operation each plate is advanced a distance a little greater than its width until it vfinally emerges onto the cutting-table 7. At the completion of each forward stroke of T-bars l2 the several shafts 8 are oscillated through the medium of cylinder 2O and connecting-rod l5, thereby lifting said bars and the push-bars carried thereby'to the position shown in dotted lilies in Fig. LLand immediately the. power is reversed in cylinders 25 and bars l2, and the pushing devices carried thereby are moved backward over the plates for a fresh hold, after which the hold of cylinder 2O is relaxed, permitting the bars to drop to operative position behind the plates. This operation is repeated each time itis desired to make room for a fresh plate at the inlet end. Ordinarily the casts are` ten minutes apart, so that there is ample time to manipulate the mechanism in the manner described. Hangers 13 andabra'ces 15 are so connected to the T-bars as not to interfere with the movement of the latter over rollers 1l, so that the reciprocating movement of the bars is free and unobstructed. In case it should be necessary to remove said bars from the leer, together with the glass-pushing devices carried thereby, it is only necessary to open the rear end wall sufficiently to permit the same to pass outward.

One side of the leer may be provided with anumoer of combined windows and doors 27, whereby access may be had to the interior of the leer when necessary and whereby the same may be inspected from without whenever desired. The vaulted roof or ceiling may be provided with covered openings 2S vfor the purpose of ventilation or for regulating or graduating the heat. Said covers may also serve to removably sustain electric lamps 29 for illuminating the le`er.

At each operation a` straight longitudinal forward pull is exerted on the glass, which causes all the platesin the leer to slide bodily and flatly on the bottom or tloor thereof without being raised-or otherwise manipulated.

As the essential 'principles underlying the invention may find expression in a variety of mechanical devices without departing from the scope of the invention as dejined by the claims, it will be understood that I do not restrict myself to the specific mechanism here shown and described.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of aplate-glass-anneal- 'ing leer having a flat floor-adapted for the reception and forward movement of glass plates, and mechanism within the leer and operating from above for advancing the plates therethrough while resting atly on said floor, substantially as shown and described.

2. The combination of a leerhavinga fioor adapted for the reception and forward movement of glass plates, depending plate-pushing devices above the glass-receiving floor and movable longitudinally of the leer, and sustaining means for said plate-pushing devices, substantially as shown and described.

3. Ther combination of a leer having a floor adapted for the reception and forward movement of glass plates, depending plate-pushing devices sustained above the glass-receiving floor and adapted to reciprocate longitudinally of the leer, sustaining means for the devices, and ineansfor varying the plane of reci procation of said'devices, substantially as shown and described.

4. The combination of a leer havinga floor adapted for the reception and forward movement of glass plates, a horizontal succession ot' connected and depending plate-pushingdevices, horizontal ways above the glass-receiving licor for said connected devices, means for changing the elevation of said ways, and mechanism for reciprocating the connected pushing devices, substantially as shown and described.

5. The combination of a leer having a dat bottom, a longitudinally-movable support, plate-engaging devices spaced at equal intervals on the support and depending therefrom to the leer-bottom, and means for actuating the support, substantially as shown and described.

6. The combination of a leer having a fiat bottom, a longitudinallymovable support, plate-engaging devices spaced at equal intervals on the support and depending therefrom to the leer-bottom, means for reciprocating the support, and mechanism for raising the support and the plate-engaging devices carried thereby during the backward reciprocations of the support, substantially as shown and described.

7. The combination of a leer having a ilat bottom,a longitudinally-movable support and means for moving the same forward and backward, plate-engaging devices projecting from the support, and means for moving said devices out of engagement with the glass during the backward `movement of the support, substantially as shown and described.

8. The combination of an elongated leer having a flat bottom, an elongated support ex- IOO IIO

tending from end to end of the leer,vertically movable sustaining means for the support, plate-engaging devices depending from the support to the leer-bottom for sliding thev plates forward thereon, means for reciprocating the support, and means for actuating the vertically-movable support-sustaining devices, substantially as shown and described.

9. The combination of a leer, a forwardly and backwardly moving plate-engaging device extending to the leer-bottom, means for actuating said device, and means for holding the device raised clear of the glass during its backward movement, substantially as shown and described. l

10. The combination of an elongated leer, shafts arranged transversely therein, means for oscillating the shafts, supports depending from the shafts and forming guideways, elongated bars sustained by and movable longitudinally in the supports, and plate-engaging devices depending from the bars to the leer-floor, substantially as shown and described.

1l. The combination of an elongated leer, shafts arranged transversely therein, means for oscillating the shafts, arms depending from the shafts in pairs, rollers on the inner sides of the arms, elongated T -bars supported on the rollers and depending therebetween, and plate-engaging devices depending from the bars to the leer-floor, substantially as shown and described.

12. The combination of an elongated leer, elongated bars within the leer, supports through which the bars are movable, plateengaging devices depending from said bars to the leer-bottom, beams for moving the bars vertically, a cross-bar with which the said bars have a vertically-movable connection, and power-cylinders operatively connected to the said cross-bar, substantially as shown and described.

13. The combination of an elongated leer, crank-shafts arranged transversely therein, a rod connecting the cranks of all the shafts, means for reciprocating the rod, supports depending from the shafts, plate-engaging devices depending from the supports, land means for reciprocating the plate-engaging devices,substanti ally as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH SCHUBERT.

Witnesses:

MYRTLE D. THOMPSON, WILLIAM SIMM.

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