UNITED STATES PATENT OFFICE;
JOHANNES EvERs, OE NEw YORK, N. Y,
CHlSEL-BAR FOR SCRAPING SODA-,KETTLES, SLG.
l
SPECIFICATION forming part of Letters Patent No. 337.488, dated March 9, 1886.
Application filed September 28, 1885. Serial No. 178,599. (No model.)
To @ZZ whom, it may concern-.
front end, d', of the thimble D can be screwed
Be it known that I, JOHANNES EvERs, of upon thethreaded socket d of the sleeve C,
the city of New York, in the county of New while the main part of the thimble is screwed
York and State of. New York, have invented forward on the threaded portion of the handle- "
certain new and useful Improvements in rod B. The sleeve C protects the main part
Chisel-Bars, of which the following is a specifi of the cutting or scraping knife A, while `the S5
cation.
.
This invention relates to an improved chis
el-bar that -is intended for use in scraping
IQ kettles used for boiling soda and other chemi
cals; and the invention consists of a chisel
projecting end of the same is worn out by use.
The cutting-iron is then fed forward, so as to
expose the next adjoining part of the same,
which is accomplished by first unscrewing the
thimble D from the socket d of the sleeve C,
bar formed of a scraping-knife, a handle-rod then moving the sleeve back on t-he scraper,
attached to said blade, a sleeve inclosing said and next screwing thimble D forward, so that
scraper and having a threaded socket, and a it re-engages the socket d of the sleeve by its
thimble that is provided with an enlarged threaded front end, d'. The sleeve is thereby
end and interior screw-threads for engaging, rigidly locked in position, so that the main
respectively, the threaded socket of the sleeve part of the scraper is protected. By thus
and a thread on the handle, so that by turn gradually feeding the cutting or scraping
ing the thimble the sleeve can be adj usted to knife forward it can be used up nearly en
the size of the scraper as the same is worn off
by use.
tirely without requiring sharpening and rc
ternpering, as the cutting-edge is sharpened 70
In the accompanying drawings, Figure 1 bythe scraping action of the soda or other
represents a side elevatiomwith a part broken chemicals that are to be scraped off from the
away, of my improved chisel-bar. Fig. 2 is kettles.
The advantages of my improved chisel-bar
25 a vertical longitudinal section of the same.
Figs. 3 and 4 are vertical transverse sections are, first, that the expensive drawing out, fil 75
on lines œ fr and y y, Fig. 1.
Similar letters of reference indicate corre
sponding parts.
30
ing, and tempering of the ends of the chisel
bars heretofore in use is done away with,
which causes considerable expense, especially
In the drawings, A represents a cutting or as the edges are dulled and worn out after a
scraping knife or blade of suitable size,which few days’ work; secondly, that the cutting
is firmly attached to the end of a handle-rod, iron can be used to its full extent, and re- y
B, of suitable length, according to the work quil-es no sharpening, as it sharpens itself by
to be performed by my implement. The work; thirdly, that the adjusting and for
35 handle-bar is made of gas-pipe, or partly of ward feeding of the iron is accomplished eas
wood and partly of metal, so as to reduce the ily and quickly, so that the tool is immedi
weight of the implement. A sleeve, C, in ately ready for work again.
closes the scraping-knife A, and is provided
Having thus described myinvention, I claim
at opposite sides with bulging portions C', for as new and desire to secure by Letters Pat
the end of the handle B.
The rear end of ent
the sleeve C is contracted, and provided with ` l. A chisel-bar consisting of a scraping
a socket, d, having an exterior screw-thread. knife, a handle-rod attached to said scraping
A thimble, D, having an enlarged front end, knife, a sleeve surrounding said cutting-knife
d', with an interior screw-thread, engages the and having a threaded socket at the rear end,
45 socket d of the sleeve C. rI‘he main part of and’ an adjusting - thimble having interior
the thimble D is made of a smaller diameter screw-threads for engaging a threaded por
than the end d', and provided with an interior tion of the handle-bar and the threaded socket
screw-thread at one part thereof, which takes of the sleeve, substantially as set forth.
into a thread of the handle-rod B, so that the
2. A chisel-bar consisting of a scraping
55
2
337,43 s
knife, a handle-rod attached to said knife, a'.
In testimony that I claim the foregoing as
sleeve having buiging' sides and an exteri~ my invention I have signed my name in pres
orly-threaded rear socket, and a thilnble hav-
ing an enlarged and interiorly-threaded front
5 end and an interiorly-thrended body that
engages a thread on the handle-bar, substantially as set forth.
ence of two subscribilnglr Witnesses.
JOHANNES EVERS.
Witnesses:
ERNST VVOLFF7
MARTIN PETRY.