US1494721A - Scraper for carbide lamps - Google Patents

Description

May 2o, 1924. 1,494,721

I S. G. THOMASSON SCRAPER AFOR CARBIDE LAMPS Filed June 12 1.923

@nrf 5. mamom Patented May 20, 1924.

SAMUEL G. THoMAssoN, or AsoNvInLE, 'INDANA SCRAPEB, Folie CARBIDE LAMPS..r

Applicationled .Tune 12; 192,3. Serial No. 644,844.v

To all whom it may concern-f `Be it known that I, SAMUEL G. THOMAS- soN, a citizen of the United States, residing at Jasonville, in the county of Greene and State of Indiana, have invented certain new and useful Improvements in Scrapers for Carbide Lamps, of which the following is a specification.

In carrying out the present invention, it is my purpose to provide a scraper within the usual carbide receptacle of miners lamps, whereby during the attachment or detachment of the receptacles to the water containers of the lamps, the carbide will be effectively scraped from the walls thereof.

The primary object of this invention is the provision of such a scraper that is embodied directly within the said carbide receptacle, and is of an extremely simple construction, and one that may be incorporated with carbide lamps at a minimum expenditure.

The nature and advantages of the invention will be better understood when the following detailed description is read in connection with the accompanying drawings, the invention residing in the construction, combination, and arrangement of parts as claimed.

In the drawings forming part of this ap'- plication,

- cate slmilar parts in the several views, an

wherein:

Figure 1 is a side elevation, partly in cross section ofa conventional type carbide lamp, the carbide container thereof being equipped with my improved scraping means.

Figure 2 is a detail transverse cross section upon the line 2-2 of Figure 1, looking downwardly in the direction of the arrows.

Figure 3 is a vertical cross section upon the line 3-3 of the same figure, and

Figure 4: is a transverse cross section upon the line 4-4 of the same figure and looking upwardly in the direction of the arrows.

Referring to the drawings in detail, there is shown a carbide lamp of conventional form embodying a water receptacle 5, and carbide container 6. The said water receptacle 5' is formed with the usual pendent outwardly flaring skirt portion 7, that is screw threaded at 8 for engaging the screw threads 9 of the usual neck 10 that is formed upon the upper end of the inwardly converging portion 11 of said carbide conlike numerals of reference indi- M My improvement embodies the proxfisiori1 I of a pair :of' platel elements 12-ithatfl have close contact with the interior ,of said cartheir` upperend sjatl for close 1contact with the inwardly converging portion 1,1of said container. The ends of said inwardly converging portions 13 of the plates are integrally joined together by a ring 14, that is formed at diametrically opposite points with inwardly extending ears "15each of which is formed with an opening and adapted for the reception of pendent pins 16, that are formed upon the bottom wall of the water receptacle :Band engage through openings in a leather washer 17. This washer being present for obvious purposes.

`The lower ends of the plates 12 are integrally joined together, 'by a cross plate 18, this cross plate being centrally, loosely secured to the bottom wall of the carbide container 6 by a pivot element 19.

The plates 12 as well as their inwardly converging portions 13 are formed with teeth 2O uponopposite vertical edges thereof, it being noted from a consideration of Figure 2, that these plates are slightly arcuate shaped for conforming to the curvature of the container 6. The connectin plate 18 between the lower ends vof sai plates 12 is lalso formed with teeth 21, the teeth in this instance being formed upon opposite ed es of the cross plate that are at opposite si es of said pivot element 19.

In view of the above description, it will at once be apparent that as the container 6 is being engaged with the water receptacle 5, the pins 16 of the water receptacle will engage within the openings of said ears 15 of the ring 14:, whereby through a continued rotary movement of the container 6 with respect to the water receptacle 5, the plates. 12 and connecting plate 18 will be rotated and effectively scrape the carbide from the walls of the container. It is of course to be understood that the edges of the plates 12 and cross plate 18 that carry said teeth are cutting edges as more clearly shown in Figure 2. y

Between the upper ends of the plates 12, there may be, and preferably is provideda reinforcing ring 20 that is riveted or otherwise secured to these plates, this ring effectively preventing displacement of the plates with respect to the interior surface of the carbide container 6.

bide container and converge inwardly iat-160 Numerous -advantages of a scraper for` carbide lamps of the present character will l 'from the spirit and scope of the invention as claimed.

Having thus described my invention, what I claim as new, and desire to secure by Let# ters Patent, is: f

VA carbide lampv comprising a water con-- tainer, Aand a generating ,chamber having screw threaded engagement with said water container, pins carried by the bottom of said container and adapted to project into the generator chamber, when engaged with said container, a frame turnably mounted in said chamber and having a scraper blade adapted to move along the inner surface of the wall of said chamber, said frame being formed with openings adapted to receive said pins whereby the'removal and attachment of the generating chamber to said water chamber effects a rotation of the scraper in the chamber.

In testimony whereof I aix my signature.

SAMUEL G. THOMASSON..

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