US1207354A - Egg-testing globe. - Google Patents

Egg-testing globe. Download PDF

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Publication number
US1207354A
US1207354A US10797816A US10797816A US1207354A US 1207354 A US1207354 A US 1207354A US 10797816 A US10797816 A US 10797816A US 10797816 A US10797816 A US 10797816A US 1207354 A US1207354 A US 1207354A
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Prior art keywords
globe
egg
testing
glass
lantern
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Expired - Lifetime
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US10797816A
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Paul Edwin Woolfolk
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Priority to US10797816A priority Critical patent/US1207354A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • G01N33/08—Eggs, e.g. by candling
    • G01N33/085—Eggs, e.g. by candling by candling

Definitions

  • This invention relates to an egg tester, and is designed for use with an ordinary hand lantern.
  • My invention therefore relates to a testing device which can besubstituted for the usual glass globe of the ordinary hand lantern, thereby converting said lantern into a candling or testing device.
  • Figure l is a vertical section through my globe.
  • Fig. 2 is a face view of a lens.
  • a globe l having the shape of the usual lantern globe, and this may be of any suitable material, either glass, earthenware or metal.
  • this coating is coated as at 2, this coating being of any suitable opaque substance, and preferably black.
  • the outer surface is also preferably blackened, as by a black enamel or japanning.
  • the inner surface has a coat 3 of whiting, either white enamel or other suitable white coating.
  • the globe On one side the globe carries an integral lateral extension I in which is fitted a corrugated glass 5. Adjacent the top the globe has a bead 6 and at the bottom a flange 7 so that it may be secured in the lantern frame in the usual manner, simply replacing the usual glass globe.
  • the source of light is not however material, and when electric light .is available the globe may be set on any suitable flat surface and an electric light bulb permitted to hang therein. This forms therefore a simple, cheap and very safe egg testing device.
  • the amount of light reflected through the egg is increased and the use of the glass 5 also tends to increase the illumination of the interior of the egg, as well as diffusing the light and preventing the eye of the observer becoming confused after a short time as is the case where the lightis directly visible while the egg is being placed in and removed from position.
  • the visibility of the source of light during the testing operation will, after a short time, cause spots to appear before the eye, which makes it practically impossible to vaccurately determine the condition of the egg itself.
  • An egg testing globe having a. lateral eX- tension, a piece of corrugated glass in said extension, a white opaque coating on the interior of the globe, a bead near the top of the globe and a flange at the bottom of the globe, thereby adapting the globe to be in serted in the frame of an ordinary hand lantern.

Description

P1 E. WOOLEOLK.
EGG TESTING GLOBE.
APPLlcATIoN man 1uLY 7,1916.
Patented Dec. 5, 19l6.
Mmmm,
m @mm (g4/vanter m@ W0 EI? l y l f7 @ttor/WMA PAUL EDWIN WOOLFOLK, OF WAGO, TEXAS.
EGG-TESTING GLOBE.
Specification of Letters Patent.
Patented Dec. 5, Iglt.
Application iled July 7, 1916. Serial No. 107,978.
10 all whom t may concern.'
Be it known that I, PAUL E. WooLFoLK, a citizen of the United States, residing at lVaco, in the county of McLennan and State of Texas, have invented certain new .and useful Improvements in Egg-Testing Globes, of which the following` is a specil cation.
This invention relates to an egg tester, and is designed for use with an ordinary hand lantern.
I am aware of the fact that egg testers have been used in the form of an opaque chimney for a lamp burner the same being provided with a lateral extension having an opening in which the egg is held and through which light passes from the tester, through the egg to the eye of the observer. But devices of this character are usually used in out buildings where incubators are run, or in stores, wareho-uses and the like, many of which are'of frame construction or filled with much inflammable material. The carrying' of the ordinary coal oil lamp into these places is dangerous and objectionn able, and may in some cases invalidate in surance policies. And so far as is known to me no simple egg` testing globe has been devised heretofore that could be quickly applied to and used in connection with the usual type of hand lantern.
My invention therefore relates to a testing device which can besubstituted for the usual glass globe of the ordinary hand lantern, thereby converting said lantern into a candling or testing device.
In the accompanying drawings: Figure l is a vertical section through my globe. Fig. 2 is a face view of a lens.
In constructing my device I employ a globe l having the shape of the usual lantern globe, and this may be of any suitable material, either glass, earthenware or metal. When made of glass the outer surface is coated as at 2, this coating being of any suitable opaque substance, and preferably black.
When of metal or earthenware the outer surface is also preferably blackened, as by a black enamel or japanning. Whatever the material of the globe may be the inner surface has a coat 3 of whiting, either white enamel or other suitable white coating. On one side the globe carries an integral lateral extension I in which is fitted a corrugated glass 5. Adjacent the top the globe has a bead 6 and at the bottom a flange 7 so that it may be secured in the lantern frame in the usual manner, simply replacing the usual glass globe. The source of light is not however material, and when electric light .is available the globe may be set on any suitable flat surface and an electric light bulb permitted to hang therein. This forms therefore a simple, cheap and very safe egg testing device. By giving the inner face of the globe a white coating the amount of light reflected through the egg is increased and the use of the glass 5 also tends to increase the illumination of the interior of the egg, as well as diffusing the light and preventing the eye of the observer becoming confused after a short time as is the case where the lightis directly visible while the egg is being placed in and removed from position. The visibility of the source of light during the testing operation will, after a short time, cause spots to appear before the eye, which makes it practically impossible to vaccurately determine the condition of the egg itself.
What I claim is An egg testing globe having a. lateral eX- tension, a piece of corrugated glass in said extension, a white opaque coating on the interior of the globe, a bead near the top of the globe and a flange at the bottom of the globe, thereby adapting the globe to be in serted in the frame of an ordinary hand lantern.
In testimony whereof I affix my signature.
PAUL EDWIN VVOOLFOLK.
Uopies of this patent may be obtained for ve cents each, by addressing the "Commissioner of Patents, Washington, D. C.
US10797816A 1916-07-07 1916-07-07 Egg-testing globe. Expired - Lifetime US1207354A (en)

Priority Applications (1)

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US10797816A US1207354A (en) 1916-07-07 1916-07-07 Egg-testing globe.

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US10797816A US1207354A (en) 1916-07-07 1916-07-07 Egg-testing globe.

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