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Патент USA US2107220

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Feb. 1, 1938.
2 Sheets-Sheet 1
Filed Nov. v22, 1935
// 9.
77/12/74’ cilcjic’éaja
Feb. 1, 1938.
F. J. scHuLz
Filed Nov. "22, 1955
2 Sheets-Sheet 2
Patented Feb. .1, 1938
2,101,220; ‘ A
" 2,107,220
'rooi. ‘Fon REMOVING mnv'r, vaams'n, '1?
ETC. _,
Frank J. Schulz, Rochester, N. Y.
mums. November 22, 1935, Serial 'No. 51,150
2 Glaims.
(01. 219-29) '
This invention relates to certain new and use
ful improvements in tools for removingpaint,
varnish, lacquer, shellac, barnacles or other sur
face coatings or coverings.
The primary object of the invention is to pro
for the removal ofvpaint, varnish,lacquer, shellac
etc., iromwood or. other surfaces ‘and operative
without burning or otherwise marring the sur
faces from which the coatings are to .be removed‘, '
the tool comprising a handle l0 through» the 51
vide a tool for removing paint, varnish and the ‘ outer end of which a heat radiating section II
like from wood or other surfaces with the head is attached and in the formbf a plurality of
of the tool in form of a scraper blade, with the ' ?ns comprising a series of spaced disks I2 con
head heated in any desired manner, preferably nected by radial webs l3.arranged in staggered '
relations between the disks for the more effece- 10 ,
10 electrically and raised to a temperature where
by the paint, varnish or the like may be easily tive dissipation of heat, the heat radiating sec- removed.
tion H being generally of cylindrical formation.
The radiator is of such construction and de- y
A further object of the invention is to pro‘
vide a tool of the foregoing character wherein.v ‘sign that it is necessary for the heat to travel
the head or heated scraper is removably attached _ transversely across a ?n or disk before coming 15
to the body or handle of the tool and may be of to‘a cross connecting web which is purposely of
such‘small area as to obtain optimum cooling
surface on each ?n as well as to transfer a mini
having a blunt or sharp edge that is heated to a
degree to effect removal of paint, varnish or the
like, but which .is operated without burning or
mum of heat to succeeding ?ns. Through the
inclusion of a number of similar ?ns each ?n 20
joined to the one preceding it by the small con;
nect-ing webs which are, spaced in such a way as
marring the surface that is coated by the mate
to continue the transverse course of the heat ’
rial to be removed.
With the above and other objects in view that ' in each ?n, it is possible to reduce the amount
of heat atthe handle to a negligible quantity. 25
will become apparent as the nature of the in
any size, shape or‘ con?guration desired for
accomplishing a special purpose, the tool head
vention is better‘understood, the same consists
‘ A hollow‘shank l4 shown more clearly in Fig
in the novel form, combination and arrangement
of parts hereinafter more fully described, shown
in the accompanying drawings and claimed.
ure 4 has an apertured annular ?ange ii at its
inner end to facilitate attachment to'fthe outer
end of the heat radiating section II‘ and the
handle iii and heat radiating section II having
In the drawings:-‘
Figure 1 is a front elevational view of a tool -
constructed in accordance with the present in
vention showing the blade-like form of scraper
head and a heat radiating section interposed
between the scraper head and handle;
aligned axialv bores therein for the passage of an-
electrical conductor l6 that\is in electrical com-‘ a,
munication with a resistance element or cartridge
I‘! mounted within the longitudinal bore of the
shank I‘. The outer end of the shank I4 is
Figure 2 is a side elevational view of the tool
annul'arly reduced to provide an externally
,shown in Figure 1;
“ Figure 3 is ‘a perspective view more clearly
threaded nipple 18 for \threaded reception in a
showing the arrangement of heat radiating ?ns ;
that has its outer end ?attened and sharpened ,
socket formed in the removable tool head It -_'\
‘if desired to constitute a scraping blade. A re
cess 20 is formed in the tool head 19 and the
resistance element I1 -_is of a length to extend
and anielectrical resistance element therein;
Figure 5 is a side elevational view of another \ through the nipple I! and into the recess 20 as
form of heated scraper tool, showing a horizon ‘shown in Figure 4 for the more effective heating
‘tal bore in the scraper head for reception of an of the tool head l9. It will be understood that
4 electrical resistance element or‘ cartridge;
the tool head i9 may be removed from the shank
Figure 6 is a front elevational view, partly in ' i4 and a head of any desired con?guration sub
Figure 4 is a detail sectional view showing the
40 screw mounting for the removable scraper head'
section of the tool shown in Figure 5; and
Figure 'l is a detail sectional view showing
50 the heat radiating element interposed between
the handle and scraper head with the latter re
movably attached to the heat radiating element.
Referring more in detail to the accompanying
drawings, and particularly to Figures 1 to 4,
there is illustrated an electrically heated tool
45. ‘
stituted therefor._ The head I9 is adapted to be
eated to a degree whereby the coating ‘or the
ike may be easily removed and with the lia
bility of injury to the coated surface eliminated.
In the form of invention illustrated in Figures
5 to 7, the handle 2i having a heat radiating
section 22 attached to its outer endwith a tool
head 23 directly attached to the outer end of 55
‘ 2,107,000
there are herein shown and described the pre
theradiating section 2!. 'I‘hehandle II is formed
of two ‘sections 24 having a pair of plates 2| Vie‘rred embodiments of the invention. it is never
interposed therebetween with the adjacent edges theless to be understood that changes may be
0!: vthe plates parallel and spaced iromeach other made therein wlthoutfdeparting from the spirit
to provide a central name through the handle andscope ol the invention as claimed.’
Ii'for the electrical conductor”.
As shown in '
I claim:—
8,'screw devices 212 effect‘ a connection
between theouter end of the handle 2i and the
inner end of the‘heat radiating section 22. The
'otthe .heat radiatingl section “is
10 outer
providediwith a transversely extending "groove
1. In a tool ior removing paint, etc., irom wood and other surfaces, a‘handle, a heat. radiating
element secured to the ‘outer end of the handle,
a tool head oiscraper-blade formation detach-_ 10:
ably connected to the outer‘ endl‘of the radiator,
20 that receives a similarly shaped rib 20 pro
and having an opening extending completely
Jecting from the inner end of» the toolhead 23V. therethrough and transversely thereof, an elec-’
‘ anchor screws 305 passing through the outer end tric resistance element permanently mounted in
15 of the heat radiating’ section'ior engagement . said opening in the removable head in spaced
with the rib” to secure the head, in position.v
‘An axial bore is formed in \the heat: radiating
section 2210:- the passageoi' theconductor 28
which also passes through an opening ii: in the
20 rib 20 for communication ‘with a resistance ele
ment or cartridge 12' removably mounted in a
transverse opening "in the tool head It.
‘From the‘above detailed description ‘of. the in
' iv'ention, n is believed that the construction and
usethereoi- will at once .be'apparent. and while
V15 '
relation to the heat radiating element and an
electrical conductor extending through the han
dle and heat radiating element for direct at-,
tachment to the resistance element;
2. In a tool of the type set iorth in claim 1, 20
characterized by the heat radiating element in
cluding a plurality of spaced, platea and staggered
radial ribsyconnecting the plates.‘ ‘ ' _
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