US1080602A - Method of feeding material to and from vacuum-driers. - Google Patents

Method of feeding material to and from vacuum-driers. Download PDF

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Publication number
US1080602A
US1080602A US48448409A US1909484484A US1080602A US 1080602 A US1080602 A US 1080602A US 48448409 A US48448409 A US 48448409A US 1909484484 A US1909484484 A US 1909484484A US 1080602 A US1080602 A US 1080602A
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vacuum
passage
driers
feeding
opening
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US48448409A
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Francis J Stokes
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
    • H01L21/67739—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations into and out of processing chamber
    • H01L21/67742—Mechanical parts of transfer devices

Definitions

  • W/TA/ESSES /NVENTR Francais rf/Ses @AVL ra sbwwq TTOHNEK 'rnANcIs J. STORES, 0F PHILADELPHIA, PENNSYLVANIA.
  • the principal object of the present invention is to provide for continuously or intermittently feeding pulverulent or powdered material past a wall or partition, upon opposite sides of which there is a difference of pressure .or atmospheric condition, without disturbing such difference and without the use of valves and the like, or more specifically stated, to provide for c ontinuously feeding pulverulent or powdered material into and out of a vacuum drier without materially interfering with the vacuum.
  • the invention in general terms comprises the method of feeding pulverulent material past a partition, u on opposite sides of which there is a di erence of pressure or atmospheric condition, which consists in establishing a suitable or restricted opening or passage through the partition and sealing the opening or passage to maintain such difference by packing the material therein as it is passed or fed therethrough.
  • This method may be applied to various uses and it may be practised by various instrumentalities, however.
  • FIG. 1 is a view principally in section illustrating Philadelthe invention 1n application to a so-called and Figs. 2 and 3, are views principally in central section, drawn to an enlarged scale, and illustrating types of apparatus by means of which the invention can be practised.
  • 1 is the shell of a rotary vacuum drier
  • 2 is a connection by means of which a more or less perfect vacuum is maintained in the shell or casing 1.
  • 3, is a revoluble stirrer which is turned by means of the connection 4 and through which steam or the'like is passed by means of the connections 5.
  • 6, is the inlet and 7 is the outlet.
  • the shell or casing 1 is shown as jacketed and steam heated by means of the connections 8. ln this machine there is a dierence of atmospheric pressure between have 1nthe inside and outside of the shell or casing 1 which shell or casing therefore constitutes a partition upon opposite sides of which there is a difference in pressure.
  • this shell is provided at the inlet and outlet with a passage or opening.
  • this passage or opening is shown at 9 and referring to the outlet it is shown at 10.
  • the pulverulent material entering at the inlet is fed continuously and in passing through the passage or opening 9 packs and seals it so that the vacuum or dierence of atmospheric pressure between the inside and outside of the shell or casing is maintained.
  • a screw 11, mounted for revolution and driven continuously as by means of the worm, wormwheel and driving pulley 12, is an appropriate means for continuously feeding the pulverulent material and packing it to cause it to seal the passage or opening through which it passes.
  • 13, is a hopper fitted with suitable stirring mechanism as 14 and is an example of means for supplying the pulverulent material to the screw.
  • the screw is shown at 15 as driven by the worm-wheel, worm and pulley 16, so that the screw 15 continuously feeds pulverulent material from the vacuum chamber to the outside and at the same time packs it in passing through the passage or opening, thus causing it to seal the same.
  • a weighted normally closed valve 18, may be provided for sealing the outlet until such time as the pulverulent material commences to be discharged therefrom.
  • a valve 19 may be provided for closing the inlet while the material contained in the drier is discharged therefrom.
  • a plunger 20 reciprocated by means of the pitman 22 is another means for continuously feeding the pulverulent material from the hopper 23 and packing it in the opening or passage 21, so as to seal the same.
  • the revoluble toothed wheels 24: and 25, arranged in the casing 26, (F ig. 3) are another means and packing the pulverulent material in the passage or opening 27, so as to seal the same.

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  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Drying Of Solid Materials (AREA)

Description

F. J. STOKES. DING MATERIAL To AND PROM VACUUM DRIERS. APPLIGATION FILED MAR.19,19U9.
METHOD OF FEE F. J. STOKES.
METHOD 0F FBBDING MATERIAL To AND PROM VACUUM DRIERS.
APPLICATION FILED MAR.19, 1909.
1,080,602, Patented Dec. 9, 1913.
2 sums-SHEET 2.
W/TA/ESSES: /NVENTR Francais rf/Ses @AVL ra sbwwq TTOHNEK 'rnANcIs J. STORES, 0F PHILADELPHIA, PENNSYLVANIA.
v-Maanen or FEEDING xArEnIAL 'ro AND Enom vAcUuM-Dmsns.
' Specication of Letters Patent.
Patented Dec. 9, 1913.
Application led March 19, 1909. Serial No. 484,484.
To all whom z't may concern:
Be it known that I, FRANCIS J. S'roKEs, a
citizen of the United States, and a residentl of Philadelphia, in the county of phia and State of Pennsylvania, vented a certain new and useful Method of Feeding Material to or from Vacuum- Driers, of which the following is a specification.
The principal object of the present invention is to provide for continuously or intermittently feeding pulverulent or powdered material past a wall or partition, upon opposite sides of which there is a difference of pressure .or atmospheric condition, without disturbing such difference and without the use of valves and the like, or more specifically stated, to provide for c ontinuously feeding pulverulent or powdered material into and out of a vacuum drier without materially interfering with the vacuum.
To this and other ends hereinafter set forth the invention stated in general terms comprises the method of feeding pulverulent material past a partition, u on opposite sides of which there is a di erence of pressure or atmospheric condition, which consists in establishing a suitable or restricted opening or passage through the partition and sealing the opening or passage to maintain such difference by packing the material therein as it is passed or fed therethrough. This method may be applied to various uses and it may be practised by various instrumentalities, however.
In the accompanying drawings Figure 1, is a view principally in section illustrating Philadelthe invention 1n application to a so-called and Figs. 2 and 3, are views principally in central section, drawn to an enlarged scale, and illustrating types of apparatus by means of which the invention can be practised.
Referring to 1,
rotary vacuum drier,
1 is the shell of a rotary vacuum drier, 2 is a connection by means of which a more or less perfect vacuum is maintained in the shell or casing 1. 3, is a revoluble stirrer which is turned by means of the connection 4 and through which steam or the'like is passed by means of the connections 5. 6, is the inlet and 7 is the outlet. The shell or casing 1 is shown as jacketed and steam heated by means of the connections 8. ln this machine there is a dierence of atmospheric pressure between have 1nthe inside and outside of the shell or casing 1 which shell or casing therefore constitutes a partition upon opposite sides of which there is a difference in pressure. In accordance with my invention this shell is provided at the inlet and outlet with a passage or opening. Referring to the inlet this passage or opening is shown at 9 and referring to the outlet it is shown at 10. The pulverulent material entering at the inlet is fed continuously and in passing through the passage or opening 9 packs and seals it so that the vacuum or dierence of atmospheric pressure between the inside and outside of the shell or casing is maintained. A screw 11, mounted for revolution and driven continuously as by means of the worm, wormwheel and driving pulley 12, is an appropriate means for continuously feeding the pulverulent material and packing it to cause it to seal the passage or opening through which it passes. 13, is a hopper fitted with suitable stirring mechanism as 14 and is an example of means for supplying the pulverulent material to the screw. At the discharge end the screw is shown at 15 as driven by the worm-wheel, worm and pulley 16, so that the screw 15 continuously feeds pulverulent material from the vacuum chamber to the outside and at the same time packs it in passing through the passage or opening, thus causing it to seal the same. A weighted normally closed valve 18, may be provided for sealing the outlet until such time as the pulverulent material commences to be discharged therefrom. Similarly' a valve 19 may be provided for closing the inlet while the material contained in the drier is discharged therefrom.
In Fig. 2, a plunger 20 reciprocated by means of the pitman 22, is another means for continuously feeding the pulverulent material from the hopper 23 and packing it in the opening or passage 21, so as to seal the same. The revoluble toothed wheels 24: and 25, arranged in the casing 26, (F ig. 3) are another means and packing the pulverulent material in the passage or opening 27, so as to seal the same.
What I claim is,
1. The process of feeding powdered material from the chamber of a vacuum drier through a passage sealed by an automatically closing valve adapted lto open outwardly, which consists in packing or crowding the material in said passage against the for continuously feeding inlet side of the valve so as to normally hold said valve open,l and permitting the com- 10 the automatic valve open and act in lieu pacted materialtoact in lieu thereof to'seal thereof to seal the passa e. the passa e.
2. The process of feedln powderedma- In testimony whereof I have hereuntoterial to and from the cham er of a vacuum signed my name.
drier through a valved assage which con- FRANCIS J. STOKES. sists in packing or crowding the material in In the presence ofsaid passage against the inlet side of the 'CLIFFORD H. Caesar.,
valve so as to compact the material, holding K. M. GILLIAN.
US48448409A 1909-03-19 1909-03-19 Method of feeding material to and from vacuum-driers. Expired - Lifetime US1080602A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2429402A (en) * 1943-06-05 1947-10-21 Lummus Co Handling of granular material
US2448745A (en) * 1943-11-16 1948-09-07 Struckmann Holger Conveying pulverized material
US2457387A (en) * 1943-08-25 1948-12-28 Locker James Reginald Conveyance of fluent materials
US2460008A (en) * 1943-10-23 1949-01-25 Bamag Ltd Concurrent flow drier with rotor, stationary casing, and terminal separation means for drying materials and drying fluid
US2465963A (en) * 1945-06-02 1949-03-29 Borden Co Removing ultimate moisture from powdered products
US2478889A (en) * 1942-10-29 1949-08-16 Emulsol Corp Method and apparatus for cooling hot hygroscopic solids
US2590202A (en) * 1944-07-04 1952-03-25 Babcock & Wilcox Co Material discharge mechanism
US2606114A (en) * 1946-11-01 1952-08-05 Sidney D Wells Continuous pulp digester
US3139127A (en) * 1959-12-03 1964-06-30 Joe R Urschel Machine for slicing a food product

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478889A (en) * 1942-10-29 1949-08-16 Emulsol Corp Method and apparatus for cooling hot hygroscopic solids
US2429402A (en) * 1943-06-05 1947-10-21 Lummus Co Handling of granular material
US2457387A (en) * 1943-08-25 1948-12-28 Locker James Reginald Conveyance of fluent materials
US2460008A (en) * 1943-10-23 1949-01-25 Bamag Ltd Concurrent flow drier with rotor, stationary casing, and terminal separation means for drying materials and drying fluid
US2448745A (en) * 1943-11-16 1948-09-07 Struckmann Holger Conveying pulverized material
US2590202A (en) * 1944-07-04 1952-03-25 Babcock & Wilcox Co Material discharge mechanism
US2465963A (en) * 1945-06-02 1949-03-29 Borden Co Removing ultimate moisture from powdered products
US2606114A (en) * 1946-11-01 1952-08-05 Sidney D Wells Continuous pulp digester
US3139127A (en) * 1959-12-03 1964-06-30 Joe R Urschel Machine for slicing a food product

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