US992982A - Tubular lantern. - Google Patents

Tubular lantern. Download PDF

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Publication number
US992982A
US992982A US60428811A US1911604288A US992982A US 992982 A US992982 A US 992982A US 60428811 A US60428811 A US 60428811A US 1911604288 A US1911604288 A US 1911604288A US 992982 A US992982 A US 992982A
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Prior art keywords
tube
air
lantern
bail
lug
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US60428811A
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Albert R Pritchard
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/40—Hand grips
    • F21V21/403—Hand grips for operation or dentist lamps

Definitions

  • This invention relates to means for securing the bail or handle of a tubular lantern to the air-tubes of the lantern.
  • the object of the invention is to produce a device for this purpose which shall be secure, inexpensive, and easily applied, and which shall also act as a reinforcement for the air-tube at the curved portion of the tube adjacent its upper extremity.
  • Figure 1 is a side-elevation of a lantern embodying the present invention
  • Fig. 2 is a frontelevation of the portion of the lantern including the invention
  • Fig. 3 is a per spective view, on an enlarged scale, of the combined bearing-lug and reinforcement.
  • the invention is illustrated as embodied in a tubular lantern of the well known coldblast type, having air-tubes of ordinary form.
  • Each air-tube comprises a substantially upright portion t at the side of the lantern and a short horizontal portion 5 at its upper extremity, these portions being connected by a quarter-turn, as illustrated in Fig. 2.
  • an integral sheet-metal connecting member comprislng an upwardly-extending bearing-lug 6 perforated to receive the end of the bail.
  • the connecting-member comprises lateral extentions 8 and 9 which are stamped approximately to the form of the curved portion of the air-tube.
  • the member is also provided with a bead 10 to embrace the outer seam 14: of the air-tube.
  • the connecting-member is applied to the curved portion of the airtube, and its lateral portions 8 and 9 are closed about the tube, by means of a suitable die-like tool, so as to cause them to closely embrace the surface of the tube, and the inner edges of the portions 8 and 9 lie against the sides of the inner seam 13 of the airtube. Owing to the double curvature of the surface of the connecting-member it rigidly resists any force tending to open it, and tightly embraces the air-tube, so that after it has been closed upon the tube it is sufiiciently secure without any additional fastening. If greater security is required, however, solder may be applied to the inner edges of the parts 8 and 9. Whether the connecting-member be soldered or not, it cannot move longitudinally upon the air-tube, owing to the fact that the air-tube is straight beyond each extremity of the connectingmember, while the latter is longitudinally curved.
  • the sleeve-portion of the connecting-member constitutes a substantial reinforcement for the air-tube at a point Where the tube is subject to blows.
  • the position of the bearing-lugs is also so high as to permit the use of a shorter bail than is necessary where the bail is pivoted, in the usual manner, at a lower point upon the air-tube.
  • the bearinglug 6 is provided with a vertical recess 11 into which the bail springs when the bail is in upright position.
  • additional recesses 12 may be formed in the bearing-lug, as shown in Fig. 3, to arrest the downward movement of the bail and prevent it from striking the globe.
  • a tubular lantern the combination, with the bail and an air-tube of the lantern, of an integral sheet-metal member comprising an upwardly-extending lug to which the bail is pivoted, and two laterally-extending portions conforming closely to and clasped about the curved portion of the air-tube adjacent its upper extremity so as to produce a sleeve reinforcing the tube and supporting said lug.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

A. R. PRITGHARD. TUBULAR LANTERN. APPLICATION FILED JAN.23,1911.
992,982; Patented May 23, 1911.
wfittnnesses 8 Hnwwtunm WWW ALBERT R. PRITGHARD, OF ROCHESTER, NEW YORK.
TUBULAR LANTERN.
Specification of Letters Patent.
Application filed January 23, 1911.
Patented May 23, 1911.
Serial No. 604,288.
To all whom it may concern:
Be it known that I, ALBERT R. PRITGHARD, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Tubular Lanterns, of which the following is a specification.
This invention relates to means for securing the bail or handle of a tubular lantern to the air-tubes of the lantern.
The object of the invention is to produce a device for this purpose which shall be secure, inexpensive, and easily applied, and which shall also act as a reinforcement for the air-tube at the curved portion of the tube adjacent its upper extremity.
To these ends the invention consists in the construction hereinafter described as it is defined in the succeeding claim.
In the accompanying drawings: Figure 1 is a side-elevation of a lantern embodying the present invention; Fig. 2 is a frontelevation of the portion of the lantern including the invention; and Fig. 3 is a per spective view, on an enlarged scale, of the combined bearing-lug and reinforcement.
The invention is illustrated as embodied in a tubular lantern of the well known coldblast type, having air-tubes of ordinary form. Each air-tube comprises a substantially upright portion t at the side of the lantern and a short horizontal portion 5 at its upper extremity, these portions being connected by a quarter-turn, as illustrated in Fig. 2.
To secure the bail or handle 7 which is the ordinary resilient wire bail, to the air-tube, I employ an integral sheet-metal connecting member comprislng an upwardly-extending bearing-lug 6 perforated to receive the end of the bail. In addition to the lug 6 the connecting-member comprises lateral extentions 8 and 9 which are stamped approximately to the form of the curved portion of the air-tube. The member is also provided with a bead 10 to embrace the outer seam 14: of the air-tube. The connecting-member is applied to the curved portion of the airtube, and its lateral portions 8 and 9 are closed about the tube, by means of a suitable die-like tool, so as to cause them to closely embrace the surface of the tube, and the inner edges of the portions 8 and 9 lie against the sides of the inner seam 13 of the airtube. Owing to the double curvature of the surface of the connecting-member it rigidly resists any force tending to open it, and tightly embraces the air-tube, so that after it has been closed upon the tube it is sufiiciently secure without any additional fastening. If greater security is required, however, solder may be applied to the inner edges of the parts 8 and 9. Whether the connecting-member be soldered or not, it cannot move longitudinally upon the air-tube, owing to the fact that the air-tube is straight beyond each extremity of the connectingmember, while the latter is longitudinally curved.
In addition to constituting a secure support for the bearing-lug 6 the sleeve-portion of the connecting-member constitutes a substantial reinforcement for the air-tube at a point Where the tube is subject to blows. The position of the bearing-lugs is also so high as to permit the use of a shorter bail than is necessary where the bail is pivoted, in the usual manner, at a lower point upon the air-tube.
To retain the bail normally in upright position, ready for convenient use, the bearinglug 6 is provided with a vertical recess 11 into which the bail springs when the bail is in upright position. In some cases it may be desirable to, prevent the hail from swinging too far down, particularly where the lantern is not provided with a globeguard, and to this end additional recesses 12 may be formed in the bearing-lug, as shown in Fig. 3, to arrest the downward movement of the bail and prevent it from striking the globe.
I claim In a tubular lantern, the combination, with the bail and an air-tube of the lantern, of an integral sheet-metal member comprising an upwardly-extending lug to which the bail is pivoted, and two laterally-extending portions conforming closely to and clasped about the curved portion of the air-tube adjacent its upper extremity so as to produce a sleeve reinforcing the tube and supporting said lug.
ALBERT R. PRITOHARD.
Witnesses:
CLAUDE S. S. SMITH, FARNUM F. DORSEY.
Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.
US60428811A 1911-01-23 1911-01-23 Tubular lantern. Expired - Lifetime US992982A (en)

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US60428811A US992982A (en) 1911-01-23 1911-01-23 Tubular lantern.

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US60428811A US992982A (en) 1911-01-23 1911-01-23 Tubular lantern.

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