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Publication numberUS2201706 A
Publication typeGrant
Publication dateMay 21, 1940
Filing dateNov 2, 1937
Priority dateSep 21, 1936
Publication numberUS 2201706 A, US 2201706A, US-A-2201706, US2201706 A, US2201706A
InventorsSukohl Heinrich
Original AssigneeSukohl Heinrich
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of coating the blades of air propellers
US 2201706 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

May 21, 1940. H. suKoHL METHOD OF COATING THE BLADES 0F AIR PRCPELLERS Filed Nav. 2, 1.957

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Patented May 21, 1940 HQE ME'EHD 0F CATING THE BLADES OIF AIR PROPELMERS Heinrich Sulrohl, Berlin, Germany 2 Claims.

my invention consists in making a pouch of a shape similar to the outer shape of the blade `from elastic material such as rubber, expanding the said coating into a size larger than that of the blade, placing the blade into the said expanded coating, and-allowing the coating to contract so that it tightly embraces the blade.

For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawing in which the same reference characters have been used in all the Views to indicate corresponding parts. In saidl drawing,

Fig. 1 is a sectional elevation showing a bladehaving a coating applied thereto,

Fig. 2( is a sectional elevation showing the coating before it has Abeen applied to the blade,

Fig. 3 is a sectional plan view taken on the line 3 3 of Fig. 2,

Fig. 4 isa sectional elevation showing the apparatus for expanding the coating With an expanded coating and a blade placed therein, and

Fig. 5 is a sectional plan view taken on the line 5--5 of Fig. 4.

As is shown in Figs. 1 to 3, the coating of the blade 8 consists of an integral body 5 in the form of a pouch of a shape similar to that of the blade but, preferably, somewhat smaller than the said blade. The coating is provided at one side corresponding to the leading edge of the blade with a reinforced portion 5 which when it has been applied reinforces the leading edge of the blade. Preferably the said reinforced portion gradually merges into the part of normal thickness of the Wall of the coating, as is shown in Fig. 3. The said reinforced portion may be made integral with the body of the coating, or it may be'xed thereto.

For applying the coating to the blade the apparatus shown in Figs. 4 and 5 may be used. The said apparatus comprises a container I which may be circular in cross-section but is preferably oval and so as to adapt itself to the shape of the blade. Within the container there is a for'aminated partition wall 2 which likewise is similar in shape to the blade 8, the said partition being slightly spaced from the wall of the container l. The container l is provided with a nipple 3 5 adapted to have a suction pipe attached thereto for evacuating the container i. For applying the coating to the blade 8 the said coating is rst placed into the container l and the partition 2, and it is tightlyv fixed with 10 its margin to the flanged top part of the container. l, for example by means of a .ring 6 held in position by cramps "l, Thereafter a vacuum is produced within the container l through the nipple 3 whereby the coating 5 is expanded and 15 places itself on the partition 2. Now a suitable adhesive such as glue, lacquer or the like is ap- 'plied to the blade 8 and the said blade is placed into the expanded coating 5, whereupon air is graduauy admitted through the nipple 3 thus 20 gradually removing the vacuum. Thereby the coating is contracted, and it places itself tightly on the blade 8, particularly when the pouch from which it is made is originsuy smaller in size than the blade 8. When the partition 2 corresponds in shape. to that of the blade unnecessary expansion of the coating is avoided, and a smallervacuum is needed for expanding the blade.

I claim:

l. The herein described method of applying a coating to the blade of an air propeller, which consists in expanding under externally applied vacuum a coating in the form of a pouch hav- Aing a shape similar to that of the blade lto be coated, placing the blade to be coated into the said expanded coating, relieving the vacuum and allowing the coating to contract.

HEINRICH SUKHL.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2423647 *Jul 14, 1943Jul 8, 1947Engineering & Res CorpMethod of making articles of compressed and impregnated wood
US2548251 *Apr 10, 1946Apr 10, 1951Bergstein SamuelMeans and method for securing the effects of end dipping in gas-tight flexible wall packages
US2560026 *Jun 8, 1945Jul 10, 1951Firestone Tire & Rubber CoMethod of attaching airplane propeller deicer shoes
US2570259 *Jan 22, 1949Oct 9, 1951Dayton Rubber CompanyMethod of and apparatus for the manufacture of flexible conduits
US2577466 *May 10, 1948Dec 4, 1951Winfield W JonesMethod of joining leaders to fishhooks
US2585435 *Sep 7, 1945Feb 12, 1952Chadbourne Joseph HLoom picker
US2638428 *Feb 21, 1949May 12, 1953Edward Gordon JamesMethod of producing a metal facing on hardenable material
US2645004 *Jan 27, 1948Jul 14, 1953Goodrich Co B FMethod of and apparatus for assembling flexible tubing upon mandrels
US2671493 *Feb 24, 1951Mar 9, 1954Art Metal Construction CoApparatus for applying covering material to the tops of desks, tables, and the like
US2805787 *Apr 8, 1954Sep 10, 1957Owens Illinois Glass CoDouble-walled container and method of fabricating
US2863491 *Jun 14, 1951Dec 9, 1958Gen Dynamics CorpBonding press
US2998052 *Jun 20, 1958Aug 29, 1961Sylvania Electric ProdApparatus for applying leaves of electron emissive material to metallic cathode bases
US3010194 *Nov 6, 1958Nov 28, 1961Rubberol Coverings IncApparatus for covering rolls with flexible tubing
US3020192 *Oct 8, 1958Feb 6, 1962Gustin Bacon Mfg CoMethod and apparatus for applying resilient sleeves
US3038199 *Jan 27, 1960Jun 12, 1962Western Electric CoMethod and apparatus for pressing moldable material
US3085316 *Mar 26, 1959Apr 16, 1963Sage Electronics CorpMethod of making a resistor
US3115912 *Oct 28, 1960Dec 31, 1963Strucfural Fibers IncTool handle
US3142600 *Apr 13, 1959Jul 28, 1964Gamble Brothers IncMethod of making a plastic-coated bowling pin
US3219039 *Feb 7, 1962Nov 23, 1965Int Latex CorpGirdle with stretch fabric lining
US3265547 *Mar 13, 1961Aug 9, 1966United States Gypsum CoMethod of making a film-covered article
US4016640 *Aug 27, 1975Apr 12, 1977`Totes` IncorporatedMethod of fabricating and installing the grip of a hand-held implement
US4134198 *Jan 3, 1977Jan 16, 1979`Totes`, IncorporatedMethod of installing grip on handle
US4391661 *Feb 2, 1981Jul 5, 1983Thomas & Betts CorporationCable covering method using an expandable insulative sleeve
US4686755 *Oct 29, 1984Aug 18, 1987Jensen Mogens PMethod for enclosing a body in a relatively thick enclosure of elastic material
US5005254 *Sep 12, 1989Apr 9, 1991`Totes`, IncorporatedHandle grip
US5050289 *Apr 5, 1990Sep 24, 1991`Totes`, IncorporatedHandle grip
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Classifications
U.S. Classification156/160, 264/571, 156/294, 264/510, 29/450, 29/235, 29/421.1, 264/DIG.500, 29/DIG.440, 53/441
International ClassificationB29C63/20, B29C63/18, B29C63/22
Cooperative ClassificationB29C63/20, B29C63/182, Y10S264/50, B29L2031/087, B29C63/22, Y10S29/044
European ClassificationB29C63/20, B29C63/18B, B29C63/22