US2939945A - Barrel inspection light - Google Patents

Barrel inspection light Download PDF

Info

Publication number
US2939945A
US2939945A US653604A US65360457A US2939945A US 2939945 A US2939945 A US 2939945A US 653604 A US653604 A US 653604A US 65360457 A US65360457 A US 65360457A US 2939945 A US2939945 A US 2939945A
Authority
US
United States
Prior art keywords
lamp
guard
globe
threaded
inspection light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US653604A
Inventor
Earl S Ryen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crouse Hinds Co
Original Assignee
Crouse Hinds Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crouse Hinds Co filed Critical Crouse Hinds Co
Priority to US653604A priority Critical patent/US2939945A/en
Application granted granted Critical
Publication of US2939945A publication Critical patent/US2939945A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L14/00—Electric lighting devices without a self-contained power source, e.g. for mains connection
    • F21L14/02—Electric lighting devices without a self-contained power source, e.g. for mains connection capable of hand-held use, e.g. inspection lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L14/00—Electric lighting devices without a self-contained power source, e.g. for mains connection
    • F21L14/02—Electric lighting devices without a self-contained power source, e.g. for mains connection capable of hand-held use, e.g. inspection lamps
    • F21L14/026—Electric lighting devices without a self-contained power source, e.g. for mains connection capable of hand-held use, e.g. inspection lamps having a linear light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • This invention relates to a light unit intended particularly for use in inspecting the interior of containers, such as barrels, tanks, etc.
  • the invention has as an object a light unit of minimum diameter to permit insertion of the light through a bung hole of a barrel, or iiller opening in a tank, and embodying an arrangement whereby the light is of the so-called explosion proof type, permitting its use in hazardous locations and providing for the convenient relamping of the unit.
  • Figure 2 is a cross section taken on line 2-2 of Figure 1.
  • Figure 3 is a cross section taken on line 3 3 of Figure l.
  • Figure 4 is a cross section of a modification of my invention.
  • Figure 5 is a cross section taken on line 5 5 of Figure 4.
  • Figure 6 is a cross section taken on line 6-6 of Figure 4.
  • the barrel inspection lamp is made up of a hollow elongated body 10 being externally threaded 11 at its outer end and internally threaded 12 at its inner end.
  • a lamp receptacle 14 mounted in the outer end of the body, as by snap ring 13, is a lamp receptacle 14 having the necessary leads 15 and 16.
  • the receptacle 14 has a lamp 17 mounted therein.
  • a lamp guard composed of an inner cylindrical portion 20 and three elongated r-ibs 21, 22 and 23 (see Figure 2) terminating in a closed end portion 24 which has an attaching hook 25 aixed thereto.
  • the lamp guard 20 carries a reilector 26 by means of a mounting plate 27 having a pair of nipples 28, 29 mounted in a slot 30 of the rib 22.
  • the seal 33 is of cylindrical formation snugly encircling the open end portion of the globe.
  • the peripheral surface snugly engages the inner surface of the portion 20 of the guard, all whereby the globe is attached to the body in flame tight relation.
  • the guard is threadedly mounted on the body 10 and is xed against rotation by means of a set screw 35 which is inserted in the body 10 after the guard 20 has been threaded onto the body 10 and secures the guard 20 against rotation by reason of the fact that the lower edge nited States Patent O.
  • a terminal block. 40 having three terminals 41, 42 and 43 at its lower end, see Figure 3, the terminals 41, 42 are the power terminals and have leads generally indicated at 45 which are connected to the leads 15 and 16 tor operate the lamp 17.
  • the terminal- 43 isa grounding. terminal and has a connection to body 10 through washer 46 which is held irmly in ⁇ place by screw 47. Also terminal 43l has a connection to wire clamp 55 by means of the grounding spring 48.
  • the lamp receptacle 14 and the terminal block 40 are spaced at opposite ends of the body 10 so as to form a wire cavity 50 for the reception of the leads 15, I6 and 45', and the central portion of the body 10 has an insulating cylinder 51 surrounding the body.
  • Aixed to the lower end of the terminal block is a wire clamp 55 having a tapered cord clamp bushing 56 in its lower end.
  • An insulating sleeve 57 having a taper complemental to the taper of the bushing 56 is carried in the wire clamp 55 to contract the inner portion of the bushing to eect a seal within the cord.
  • the lamp 17 is mounted in explosion proof relation in the receptacle 14 by reason of the fact that there is a long smooth running snug lit between the sleeve 33 and the inner cylindrical end of the lamp guard 20, thus providing a ame extinguishing path between the interior of the body 10 and the atmosphere, as will be apparent to those skilled in the art.
  • my modied inspection lamp is made up of a body 70, which has external threads 71 and 72 at its upper and lower ends respectively.
  • the body 70 has a lamp receptacle 73 mounted in its upper end, as by a snap ring 74.
  • a lamp 75 is mounted in the receptacle 73.
  • a lamp guard composed of an inner cylindrical portion 76 and three elongated ribs 77, 78 and 79 is threadedly mounted on the outer end of the body 70.
  • the lamp guard has an attaching hook 80 aixed to its outer end.
  • Aihxed to the lamp guard is a reilector 81 carried by a mounting plate 82 which is mounted in a grooved rib 78 by a pair of beads 83, S4.
  • the lamp guard carries a globe 85 which encircles and protects the lamp 75.
  • Sleeve S7, gasket S6 and mounting nut 88 are utilized to mount the globe 85 in the guard 76 as in the form of the invention described previously and disclosed in Figures 1 3.
  • An explosion proof seal is eiected between the globe 85 and the lamp guard 70 by means of the sleeve 87 and the inner end of the guard 76 as was previously explained in connection with the description of the form of the invention illustrated by Figures 1-3.
  • a terminal block 90 Mounted in the lower or inner end of the body 70 is a terminal block 90 having terminals 91, 92 and 93. Depending from the inner end of the receptacle 73 are leads 94, 95, which are connected in the wire cavity 96 in the body 70 to suitable leads 97, from the power terminals 91 and 92.
  • the terminal 93 has a grounding connection to the body 70 through the grounding screw 98 and a grounding lead 99.
  • Threadedly attached to the lower end of the body 70 is a connector 100 which has an insulator 101 mounted therein, as by an insulating washer 102.
  • an extension member 105 Threaded in the lower end of the connector is an extension member 105 which has a cord clamp 106 aixed to its lower end by means of a threaded sleeve 107 and the set screw 108.
  • the cord clamp 106 carries the insulator 110 which encloses the necessary power leads, as will be familiar to those skilled in the art.

Description

June 7, 1960 E. s. RYEN BARREL INSPECTION LIGHT 2 Sheets-Sheet 1 Filed April 18, 1957 INVENTOR. BY Far? 5. Rye
lter ell/.
June 7, 1960 E. s. RYEN BARREL INsPcnoN LIGHT 2 Sheets-Sheet 2 Filed April 18, 1957 INVENTOR.
y IIIIIII i il .kbmixvzvvlnk 0 6. n 2 A w EM BARREL. lNsrnc'rroN Llena:l
Earl S. Ryen,` Netlrow,v N.Y., assignor' to Crouse-Hinds Company, Syracuse, N.Y., a corporation of New York Filed Apr. 18, 1957, Sen-No. 653,604
1 Claim. (CI. 24U-2.18)
This invention relates to a light unit intended particularly for use in inspecting the interior of containers, such as barrels, tanks, etc.
The invention has as an object a light unit of minimum diameter to permit insertion of the light through a bung hole of a barrel, or iiller opening in a tank, and embodying an arrangement whereby the light is of the so-called explosion proof type, permitting its use in hazardous locations and providing for the convenient relamping of the unit. f
The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.
In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.
In the drawings- Figure l is a cross section of my invention.
Figure 2 is a cross section taken on line 2-2 of Figure 1.
Figure 3 is a cross section taken on line 3 3 of Figure l.
Figure 4 is a cross section of a modification of my invention.
Figure 5 is a cross section taken on line 5 5 of Figure 4.
Figure 6 is a cross section taken on line 6-6 of Figure 4.
Referring now to the form of the invention illustrated by Figures 1, 2 and 3, the barrel inspection lamp is made up of a hollow elongated body 10 being externally threaded 11 at its outer end and internally threaded 12 at its inner end. Mounted in the outer end of the body, as by snap ring 13, is a lamp receptacle 14 having the necessary leads 15 and 16. The receptacle 14 has a lamp 17 mounted therein. Threadedly mounted on the outer end of the body 10 is a lamp guard composed of an inner cylindrical portion 20 and three elongated r- ibs 21, 22 and 23 (see Figure 2) terminating in a closed end portion 24 which has an attaching hook 25 aixed thereto. The lamp guard 20 carries a reilector 26 by means of a mounting plate 27 having a pair of nipples 28, 29 mounted in a slot 30 of the rib 22.
A globe 31 mounted in the lamp guard at its outer end presses against a gasket 32, and a metallic seal 33 is cast on the inner end of the globe which is engaged by a nut 34 threaded in the lower end of the lamp guard. The seal 33 is of cylindrical formation snugly encircling the open end portion of the globe. The peripheral surface snugly engages the inner surface of the portion 20 of the guard, all whereby the globe is attached to the body in flame tight relation.
The guard is threadedly mounted on the body 10 and is xed against rotation by means of a set screw 35 which is inserted in the body 10 after the guard 20 has been threaded onto the body 10 and secures the guard 20 against rotation by reason of the fact that the lower edge nited States Patent O.
2,939,945 Patented June 7, 1960 fice 36 of the guard 20 is scalloped to partially receive the set screw 35.l
Threaded-ly mounted. in the inner end of the body 1.0 is a terminal block. 40 having three terminals 41, 42 and 43 at its lower end, see Figure 3, the terminals 41, 42 are the power terminals and have leads generally indicated at 45 which are connected to the leads 15 and 16 tor operate the lamp 17.
The terminal- 43 isa grounding. terminal and has a connection to body 10 through washer 46 which is held irmly in` place by screw 47. Also terminal 43l has a connection to wire clamp 55 by means of the grounding spring 48.
The lamp receptacle 14 and the terminal block 40 are spaced at opposite ends of the body 10 so as to form a wire cavity 50 for the reception of the leads 15, I6 and 45', and the central portion of the body 10 has an insulating cylinder 51 surrounding the body. Aixed to the lower end of the terminal block is a wire clamp 55 having a tapered cord clamp bushing 56 in its lower end. An insulating sleeve 57 having a taper complemental to the taper of the bushing 56 is carried in the wire clamp 55 to contract the inner portion of the bushing to eect a seal within the cord.
The lamp 17 is mounted in explosion proof relation in the receptacle 14 by reason of the fact that there is a long smooth running snug lit between the sleeve 33 and the inner cylindrical end of the lamp guard 20, thus providing a ame extinguishing path between the interior of the body 10 and the atmosphere, as will be apparent to those skilled in the art.
Referring now to the modification of my invention illustrated by Figures 4 through 6, it w-ill be seen that my modied inspection lamp is made up of a body 70, which has external threads 71 and 72 at its upper and lower ends respectively. The body 70 has a lamp receptacle 73 mounted in its upper end, as by a snap ring 74. A lamp 75 is mounted in the receptacle 73. A lamp guard composed of an inner cylindrical portion 76 and three elongated ribs 77, 78 and 79 is threadedly mounted on the outer end of the body 70. The lamp guard has an attaching hook 80 aixed to its outer end. Aihxed to the lamp guard is a reilector 81 carried by a mounting plate 82 which is mounted in a grooved rib 78 by a pair of beads 83, S4. The lamp guard carries a globe 85 which encircles and protects the lamp 75. Sleeve S7, gasket S6 and mounting nut 88 are utilized to mount the globe 85 in the guard 76 as in the form of the invention described previously and disclosed in Figures 1 3. An explosion proof seal is eiected between the globe 85 and the lamp guard 70 by means of the sleeve 87 and the inner end of the guard 76 as was previously explained in connection with the description of the form of the invention illustrated by Figures 1-3.
Mounted in the lower or inner end of the body 70 is a terminal block 90 having terminals 91, 92 and 93. Depending from the inner end of the receptacle 73 are leads 94, 95, which are connected in the wire cavity 96 in the body 70 to suitable leads 97, from the power terminals 91 and 92. The terminal 93 has a grounding connection to the body 70 through the grounding screw 98 and a grounding lead 99. Threadedly attached to the lower end of the body 70 is a connector 100 which has an insulator 101 mounted therein, as by an insulating washer 102. Threaded in the lower end of the connector is an extension member 105 which has a cord clamp 106 aixed to its lower end by means of a threaded sleeve 107 and the set screw 108. The cord clamp 106 carries the insulator 110 which encloses the necessary power leads, as will be familiar to those skilled in the art.
It will thus be seen by both of my forms of invention I have provided an inspection light of minimumdiameter which is explosion proof.
What I claim is: An electrical hand lamp vcomprising a cylindricalbody threaded at its ends, a lamp receptacle detahably mountedv in the forwardY end of the bodyfor the rception of-a tion, a cylindrical lamp enclosing globe positioned in saidV guard, said globe being closedrat its outer end and open at its inner end confronting said receptacle, a sealing member Vcasteon the inner end portion of said globe and extending axially along said globe to effect an explosion proof path, said sealingV member snugly vengaging the inner surface of the cylindrical Vend portion of said guard in explosionproof fashion, a ring nut threaded into Ysaid cylindrical portion of 4the guard for detachably securing 'said globe in said guard, a terminal breek having threaded connection tothe rear end'of said body, Ya plurality ofv terminals mounted in said block in ame tight relation thereto, a cord grip carrying "member aixed to the rear end of the body assembly, said body, guard and cord grip carrying member Ybeing of substantially'the same diameter. l I, l t
References Cited ini-the le of patent UNITED STATES'PATENTS 2,163,673 t Garlrocrk v r June 27, 1939 2,228,680 Tornblom Ian. 14, 1941 2,316,835 Blood V Apr. 20, 1943 2,574,882 McDowell et al YNGV. 13, 1951 FOREIGN PATENTS Y Y 586,006 VGermany'.l ,.Ln Oct; 14, 1933l
US653604A 1957-04-18 1957-04-18 Barrel inspection light Expired - Lifetime US2939945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US653604A US2939945A (en) 1957-04-18 1957-04-18 Barrel inspection light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US653604A US2939945A (en) 1957-04-18 1957-04-18 Barrel inspection light

Publications (1)

Publication Number Publication Date
US2939945A true US2939945A (en) 1960-06-07

Family

ID=24621572

Family Applications (1)

Application Number Title Priority Date Filing Date
US653604A Expired - Lifetime US2939945A (en) 1957-04-18 1957-04-18 Barrel inspection light

Country Status (1)

Country Link
US (1) US2939945A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165159B (en) * 1961-05-24 1964-03-12 Ibak Helmut Hunger Underwater light
US3249749A (en) * 1963-08-12 1966-05-03 Stewart R Browne Mfg Co Inc Portable lamp structure
US4613931A (en) * 1984-05-24 1986-09-23 501 Olympus Corporation Portable fiberoptic light source for use in hazardous locations

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586006C (en) * 1931-06-04 1933-10-14 Stotz Kontakt Gmbh Electric hand lamp
US1958222A (en) * 1933-06-10 1934-05-08 Don C Wilson Safety lamp guard
US2163673A (en) * 1937-03-12 1939-06-27 Stewart R Browne Mfg Co Inc Lighting device
US2228680A (en) * 1938-08-27 1941-01-14 Appleton Electric Co Explosionproof hand lamp
US2316835A (en) * 1940-09-12 1943-04-20 Crouse Hinds Co Explosionproof enclosure for electrical devices
US2574882A (en) * 1949-01-13 1951-11-13 Pyle National Co Explosion-proof lighting fixture having isolated compartments

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586006C (en) * 1931-06-04 1933-10-14 Stotz Kontakt Gmbh Electric hand lamp
US1958222A (en) * 1933-06-10 1934-05-08 Don C Wilson Safety lamp guard
US2163673A (en) * 1937-03-12 1939-06-27 Stewart R Browne Mfg Co Inc Lighting device
US2228680A (en) * 1938-08-27 1941-01-14 Appleton Electric Co Explosionproof hand lamp
US2316835A (en) * 1940-09-12 1943-04-20 Crouse Hinds Co Explosionproof enclosure for electrical devices
US2574882A (en) * 1949-01-13 1951-11-13 Pyle National Co Explosion-proof lighting fixture having isolated compartments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1165159B (en) * 1961-05-24 1964-03-12 Ibak Helmut Hunger Underwater light
US3249749A (en) * 1963-08-12 1966-05-03 Stewart R Browne Mfg Co Inc Portable lamp structure
US4613931A (en) * 1984-05-24 1986-09-23 501 Olympus Corporation Portable fiberoptic light source for use in hazardous locations

Similar Documents

Publication Publication Date Title
US4749821A (en) EMI/RFI shield cap assembly
US2639313A (en) High-voltage terminal connector
US1972790A (en) Electric hand lamp
US4010437A (en) Fuse holders for transformers
US1905843A (en) Base and socket for electric lamps
US2258941A (en) Double seal connector
US2295883A (en) Gasproof socket for fluorescent lamps
US2939945A (en) Barrel inspection light
US2826631A (en) Overheat switch insulator lock nut
US3046515A (en) Plug and receptacle connector
US3060310A (en) Tubular lamp fixture
US2228680A (en) Explosionproof hand lamp
US2777942A (en) Lighting unit
US3307138A (en) Watertight repairable electric plug
US2367175A (en) Shielded electrical connection
US2490598A (en) Tubular secondary electric battery
US2472180A (en) Fluorescent inspection lamp
US2683257A (en) Holder for fluorescent tubes
US4432046A (en) Protective casing for a lamp holder
US4066888A (en) Enclosed high-pressure electric discharge lamp structure with cable terminal
GB804545A (en) Safety torch
FI69724B (en) SPAERRPROPP
US2884365A (en) ph electrode holder
US3398271A (en) Battery holding arrangement for a lamp
US2250855A (en) Mounting for electric fittings