US787437A - Furnace for bending and shaping sheet-glass, &c. - Google Patents

Furnace for bending and shaping sheet-glass, &c. Download PDF

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Publication number
US787437A
US787437A US20073804A US1904200738A US787437A US 787437 A US787437 A US 787437A US 20073804 A US20073804 A US 20073804A US 1904200738 A US1904200738 A US 1904200738A US 787437 A US787437 A US 787437A
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mold
glass
furnace
bending
pipe
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US20073804A
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William Cutler
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B23/00—Re-forming shaped glass
    • C03B23/02—Re-forming glass sheets
    • C03B23/023—Re-forming glass sheets by bending
    • C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds

Definitions

  • This invention relates to furnaces for bending and shaping sheet-glass and the like in a mold by the action of the atmospheric pressure on the one side of the glass when heated while the air is being exhausted, so as to remove the pressure from the other side, as set forth in United States Patent No. 544,248, dated the 7th of August, 1895, the object of these improvements being to facilitate the rapid placing and fixing of the sheet-glass in the molds and the removal of the articles therefrom after being shaped, as also the rapid connection and disconnection of the vacuum-pipe to and from the mold without materially affecting the temperature of the heating-chamber.
  • Figure 1 is a longitudinal section through the furnace with the mold in position ready for the insertion of the sheet-glass or the removal of the finished article.
  • Fig. 2 is a side elevation of the furnace shown by Fig. 1.
  • Fig. 3 is a cross-section on the line A B through the furnace illustrated by Fig. 1, but showing the mold in position as when under exhaust.
  • Fig. 4 is an enlarged view of the clips for raising the clamp, as shown by Fig. 1.
  • Fig. 5 is a plan of the mold-clamp when detached.
  • Fig. 6 is a section of the connection to the mold exhaust-pipe.
  • the furnace consists of a grate 2 and two chambers 3 and 4, the heating one, 3, of which is placed in a position adjacent to the grate 2, from which it is divided by a suitable bridge 5.
  • the changechamber 4 is provided for the insertion of the glass and the removal of the articles from the mold 7, while the flue 8 to the stack 9 is preferably placed over or below and in close proximity to the heating-chamber 3 and is provided with a suitable damper for the regulation of the draft.
  • the mold 7 is placed upon a truck 27, which is mounted to travel on a tramway running between the heating and change chambers, by which means the sheet of glass can be inserted in the mold and the article removed through the outerdoor 10 without materially affecting the temperature of the heating-chamber 3.
  • a heavy metal frame or clamp 11 For retaining the sheet-glass in the mold 7 during the operation of the vacuum process a heavy metal frame or clamp 11 requires to be lowered and deposited upon the mold 7, and such lowering action must be effected with a perfectly true vertical movement, so as to always find its correct seat upon the mold. to efiect which a lever 12 is pivoted upon a support which is fixed to the furnace, such lever being provided with a grooved segment 13 at the end, with the pivot 14 at its center and which is immediately over the mold 7, while an operating-handle 15 is suspended from the other end of the lever.
  • One end, 16, of a vertically-hanging chain 17 is fixed to the extreme top 16 of the segment and rests in the segment-groove, by which means the chain 17 has a true vertical movement, and thereby raises and lowers the mold-clamp 11 in the same manner.
  • Toggle or other suitable clips or clutches 18 are provided upon a suitable frame-terminal 19 to the chain 17, which engages with the projections 28 of the clamp 11 when raising same and which can be disengaged therefrom when so required to allow of the mold and clamp passing into the heating-chamber.
  • the frame 11 may be raised by other means, such as a chain passing over grooved pulleys.
  • the improvements in and relating to furnaces for vacuum bending and shaping sheetglass and the like characterized by a pair of heating and change chambers having a tramway connection between the two with truck for conveying the mold from one to the other, in combination with a mold, a clamp, an exhaust-pipe, a vertically-moving clutch operated from the exterior for raising and lowering the clamp, an aperture or door in the side of the furnace and means for coupling up the exhaust-pipe to the mold substantially for the purpose set forth.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Description

No. 787,437. PATENTBD APR, 18, 1905.
,w. CUTLER. I FURNACE FOR'BENDING AND SHAPING SHEET GLASS, &0.
APPLICATION FILED MAR. 30,1904.
- 2 SHEETS-SHEET 1.
No.787,487. I PATENTED APR.18,1905.
' w. CUTLER. I
' FURNACE FOB. BENDING AND SHAPING SHEET GLASS, &o. I APPLIUATION FILED MAB. 30,1904.
' 2 SHEETS-SHEET 2L ,F/QS.
lmum/ f UNITED STATES Patented April 18, 1905.
P TENT OFFICE.
\VILLIAM CUTLER, OF BIRMINGHAM, ENGLAND.'
SPECIFICATION forming part of Letters Patent No. 787,437, dated April 18, 1905.
Application filed March 30, 1904:- Serial No. 200,738.
T (LZZ whom it may concern:
Be it known that I, \VILLIAM CUTLER, manufactu rer, a subject of the King of Great Britaim, and a resident of 71 Gough road, Edgbaston, Birmingham, in the county of Warwick, England, have invented certain new and useful Improvements in and Relating to Furnaces for Bending and Shaping Sheet-Glass and the Like, (for which I have applied for a patent in Great Britain, PatentNo. 28,307, dated the 24th day of December, 1903,) of which the following is a specification.
This invention relates to furnaces for bending and shaping sheet-glass and the like in a mold by the action of the atmospheric pressure on the one side of the glass when heated while the air is being exhausted, so as to remove the pressure from the other side, as set forth in United States Patent No. 544,248, dated the 7th of August, 1895, the object of these improvements being to facilitate the rapid placing and fixing of the sheet-glass in the molds and the removal of the articles therefrom after being shaped, as also the rapid connection and disconnection of the vacuum-pipe to and from the mold without materially affecting the temperature of the heating-chamber.
In order that this invention may be clearly understood and more easily carried into practice, I have appendedhereunto two sheets of drawings, upon which I have illustrated the nature of my said invention.
Figure 1 is a longitudinal section through the furnace with the mold in position ready for the insertion of the sheet-glass or the removal of the finished article. Fig. 2 is a side elevation of the furnace shown by Fig. 1. Fig. 3 is a cross-section on the line A B through the furnace illustrated by Fig. 1, but showing the mold in position as when under exhaust. Fig. 4 is an enlarged view of the clips for raising the clamp, as shown by Fig. 1. Fig. 5 is a plan of the mold-clamp when detached. Fig. 6 is a section of the connection to the mold exhaust-pipe.
In carrying this invention into effect the furnace consists of a grate 2 and two chambers 3 and 4, the heating one, 3, of which is placed in a position adjacent to the grate 2, from which it is divided by a suitable bridge 5. Upon the reverse side of the heatingchamber 3 to that of the grate 2 the changechamber 4 is provided for the insertion of the glass and the removal of the articles from the mold 7, while the flue 8 to the stack 9 is preferably placed over or below and in close proximity to the heating-chamber 3 and is provided with a suitable damper for the regulation of the draft.
The mold 7 is placed upon a truck 27, which is mounted to travel on a tramway running between the heating and change chambers, by which means the sheet of glass can be inserted in the mold and the article removed through the outerdoor 10 without materially affecting the temperature of the heating-chamber 3. I
For retaining the sheet-glass in the mold 7 during the operation of the vacuum process a heavy metal frame or clamp 11 requires to be lowered and deposited upon the mold 7, and such lowering action must be effected with a perfectly true vertical movement, so as to always find its correct seat upon the mold. to efiect which a lever 12 is pivoted upon a support which is fixed to the furnace, such lever being provided with a grooved segment 13 at the end, with the pivot 14 at its center and which is immediately over the mold 7, while an operating-handle 15 is suspended from the other end of the lever. One end, 16, of a vertically-hanging chain 17 is fixed to the extreme top 16 of the segment and rests in the segment-groove, by which means the chain 17 has a true vertical movement, and thereby raises and lowers the mold-clamp 11 in the same manner. Toggle or other suitable clips or clutches 18 are provided upon a suitable frame-terminal 19 to the chain 17, which engages with the projections 28 of the clamp 11 when raising same and which can be disengaged therefrom when so required to allow of the mold and clamp passing into the heating-chamber. In place of the segment the frame 11 may be raised by other means, such as a chain passing over grooved pulleys.
The vacuum-pipe 20, which projects from the mold 7 in a horizontal direction, is pro-- vided with a flanged end 21 andjs sufiiciently large to allow the end of the connecting-pipe 22 to socket thereon, such connecting-pipe being provided at one end with a flange 23, which butts against the flange 21 upon the mold-pipe, and thereby forms a practically air-tight connection, while the other end of the pipe 22 is adapted to be connected to the pump or other means for exhausting the air by a flexible pipe, thus enabling the pipe connection to be rapidly made through the aperture 25, which is provided in the side of the heating-chamber, a small sliding door 26 being provided above to enable the workman to readily make the connection and watch the action of the glass in the mold.
Having now described my invention, What I claim as new, and desire to secure by Letters Patent, is
The improvements in and relating to furnaces for vacuum bending and shaping sheetglass and the like, characterized by a pair of heating and change chambers having a tramway connection between the two with truck for conveying the mold from one to the other, in combination with a mold, a clamp, an exhaust-pipe, a vertically-moving clutch operated from the exterior for raising and lowering the clamp, an aperture or door in the side of the furnace and means for coupling up the exhaust-pipe to the mold substantially for the purpose set forth.
In witness whereof have hereunto set my hand in the presence of two Witnesses.
WILLIAM CUTLER. Witnesses:
WALTER E. .BARTLAM, JUSTUS Jones.
US20073804A 1904-03-30 1904-03-30 Furnace for bending and shaping sheet-glass, &c. Expired - Lifetime US787437A (en)

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US20073804A US787437A (en) 1904-03-30 1904-03-30 Furnace for bending and shaping sheet-glass, &c.

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