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Патент USA US2118832

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May 31, 1938.’
Originél Filed June 1,' 1954 '
6 Sheets-Sheet l
May 31, 1938.
Original Filed June 1, 1934
6 Sheets-Sheet 2
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May 31, 1938.
é. .1. WEAN ET ‘AL
Original Filed June 1, 1934
e She‘ets-Sheet 5
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May 31, 1938-
Original Filed June 1, 1954
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6 Sheets-Sheet 4
May 31, 1938.
Original Filed Juné 1, 1934
i' .- [132,118,832
May 31, 1938.
Original Filled, June 1, 11934
6. Sheets-Sheet 6
?avmond J. Wean &
Louis D. PeiK
0;; 5%,?MvM
Fatentedi biliary-3i, i938
Raymond if. Wean and Louis B. li’eilz, Warren,
uDhio, assignors, by mcsne assignments, to The
American Foundry Equipment Company, Mish- a
awaka, End, a corporation of Delaware
Application June 1, 193%, Serial No. 72$,db3
Renewed January 27!, 193‘?
7 Claims. (Ci. Slug)
Our invention relates to the removal of the
outer layer of scale or oxide from metal articles
such as plates and_billets, by means of a stream
of abrasive particles.
In the working of metal, it frequently becomes
desirable to clean the surfaces of the'material
so as to free them from adhering layers of scale
or oxide. It is an object of the present invention.
to provide for the accomplishment of this clean
10- mg or scale removal rapidly and economically.
Our invention takes the form of a devicegfor con
tinuously subjecting a plate or billet to an abrasive
blast with the result that the surfaces thereof
are rapidly freed from adhering scale or oxide.
15 In accordance with our invention, we prefer to
journaled in bearings carried thereby. -The ex
ternal rolls may be supported in bearings, not
shown, in any desired manner.
Shafts it are journaled in the housing'and are
adapted to be driven in any convenient way, for g
example, by motors having chain belt driving
connections with the shafts. Each of the shafts
carries one or more wheels ill, such as disclosed
and claimed in the above ‘mentioned patent.
The abrasive throwing wheel as disclosed in 1a
the patent to Louis D. Peik No. 1,953,566, com
prises generally ‘a disc db having a hubitl where- _
byit is mounted on a shaft it. The wheel may
be'closed by a disc or ring it concentric with the
disc at having interposed throwing segments M in
‘forming the discharge passages for the abradant.
abrasive material to the work and, particularly,
The wheel may be assembled by means of
employ centrifugal
for delivering
a revolving wheel such as disclosed and claimed
in the U. S. Patent No. 1,953,566 to Louis D. Peik.
For a complete understanding of our inven
tion, reference is made to the accompanying
The wheel has a central cylindrical opening
at and a stationary member 52, held on a ring- 20
like support ht extending into this'opening. The
drawings illustrating a preferred embodiment, to- ' support 53 is provided with slots bi to accommo
date bolts Elli so that by loosening the bolts the
gether with certain modifications. In the draw
member 52 can be rotatably adjusted, thereby
changing its orientation. The innermost end of 25
Figure 1 is a side elevation of one form’ of appa
member 52 has an opening at through which
ratus embodying our invention;
Figure 2 is a‘ sectional view along the line II—IlZ there projects an impeller 51 carried by the disc
46. The impeller bl is provided with radial
of Figure 1;
Figure 3 is a view similar to Figure 1 showing a blades 5% which serve to feed abrasive particles
to the wheel. The abradant is supplied in the 30
30, modi?ed form of construction;
Figure 4 is a sectional view along the line ?rst instance through a tube 59 and discharged
through a central opening 60 in the member 52
lV-IV of Figure 3;
Figure 5 is a. transverse sectional view through ' into an impeller. chamber 6i. The chamber has
a peripheral outlet at, one face of which is
a still further form of the invention;
Figure 6 is a sectional view along the time formed by an extension of the surface 52 and the 35
other of which is formed by a ?ller block til held
VI—VI of Figure 5;
Figure '7 is a horizontal, sectional view along in place by screws $5. The peripheral length of
the line VII—V1I of FigureS showing parts in . the opening 63 may be varied by using ?ller blocks
of di?erent sizes, as indicated in Fig. 9. The cen
Figure 8 is a diagrammatic plan view showing tral container‘ or control cage with its impeller 40 ‘
blades 58 serves to discharge the abradant ma
one arrangement of the apparatus;
Figure 9 is a sectional view taken in the plane terial at a uniform rate through the wheel.‘ The
oi the abrasive throwing wheel along line 9-9 of direction of rotation of the head is indicated by
arrow B. in Fig. 9 and it will be observed that the
Fig. 10; and
Figure 10 is a transverse section taken along discharge opening for the central container ex- 45
tends forwardly and outwardly with respect to
line it—it of Fig. 9.
Referring now in detail to the drawings and such direction of rotation.
The abradant which. is fed through the opening
for the moment to Figures 1 and 2, our invention
comprises a housing it composed of sheet metal it in the central container is received by, the
so walls ii assembled on a structural, framework it. passages it constituting the spaces between the 50
The housing it is closed on all sides but has end adjacent wheel segments lit. These passages may
openings for receiving plates iii and billets it. extend outwardly and rearwalrdly with respect to
These articles are adapted to be delivered to the the direction of rotation and terminate adjacent
housing by means of roll conveyors i5 and lba.
55 The conveyor rolls within the housing may be
the periphery of the wheel in radially extending
Damages W. The rearward faces of the passages 55
63 (considering the direction of rotation) are pro
vided with impact plates 63 having abrasive-re
sisting impact surfaces ‘I0. -_Such surfaces may
be of an exceedingly hard material, such. as
tungsten carbide or other wear-resisting material.
In the above wheel the. orientation of the dis
‘charge zone may be readily controlled by adjust
ing the orientation of the discharge passage 63,
and the size of the ‘zone may be readily controlled
10 by adjusting the peripheral length of such pas
sage. The edges of the zone are quite sharply
de?ned so that surface blasting may be carried
on accurately and successfully over such zone and
maximum e?iciency obtained from the abradant.
15 The speed and character of the surface blasting
effected may be varied by changing the speed of
the wheel and by the size and character of the
abradant employed.
Abrasive material is delivered to the ?ring
20 wheels'from a hopper it through conduits I9 and
headers 20. Conduits 2| extend from the head
ers 20 to the axial inlet port of each of the
wheels. Screw conveyors (not shown) move .the
abrasive through the headers.
As shown in Figure 2, the abrasive blast when
thrown by the wheels I‘I, impinges either on the
under surface of the plates I3 or the upper sur
faces of the billets I3. As described in the Peik
patent referred to above, the orientation of the
30 abrasive‘ blast or stream may be controlled by
similar parts in Figures 1 and 2 with the su?ix
"a”. As shown in Figures 3 and 4, in addition to
the housing I3 and associated apparatus for
cleaning the under side of plates or the upper
sides of billets disposed on edge, there is a second
housing Illa having a conveyor Ila cooperating
with the conveyor I5 for passing plates there
through. Wheels I‘Ia are mounted on shafts Iia
in the housing Illa above'the conveyor Ila.
By this arrangement, plates traveling through 10
the housings I0 and I Ila successively, have their
lower and upper surfaces cleaned respectively by .
abrasive particles discharged thereagainst from
wheels I1 and "a respectively. Billets passing
through the ‘housings on .the conveyor I5a may
have their upper surfaces cleaned as in the case
of Figures 1 and 2. The abrasive'particles dis
- charged by the wheels I'Ia are collected in a
hopper portion 22a of the housing Illa and de
livered by a screw conveyor 23a to an elevator 20
The elevator 24a discharges to a header 20a
which supplies conduits 2Ia extending therefrom
to the inlet ports of the wheels I'Ia.
Itwill be obvious that by adding a second unit,
as shown in Figure 3, to the apparatus of Figures 2.5
v1 and 2, the simultaneous cleaning of both sides
of the plates is easily possible; Billets require a
second passage, as 'in the simpler-form of the
apparatus, but this can readily be provided after
reversing billets on the conveyor, as shown in 30
suitable orientation of the discharge passage in
Figure 8.
the normally stationary container. Thus the
wheels I‘! ‘may be made to discharge streams
A slightly different form of apparatus intended
for simultaneously cleaning the four sides of
billets of rectangular section, is shown in Figures
5, 6, and 7. This apparatus comprises a roll table 35
30 havingguides 3| therealong for passing billets
such as that shown at 32 through a housing 33,
where they are subjected ,to the abrasive action
of high velocity streams of particles directed at
either upwardly against the plate I3 or down
35 wardly against the billets I I. The controlled
stream of abrasive thrown by the wheel can be
directed to impinge either the plates I3 or the
billets II by suitably orienting the discharge pas
sage 63 in the control container 3|. By driving
40 the wheels I‘! at high speed, a very effective clean- . the’ four sides thereof. - Entry and exit openings
ing blast is provided which rapidly removes lay
in the housing 33 are provided at 34 and 35.
ers of scale or oxide from the: plates or billets.
Rubber curtains 36 guard against the out?ow of v
The lower portion of the housing I II is formed abrasive particles through these openings.
into hopper shape, as shown at 22, and the abra
A plurality of wheels 31 are carried on shafts
45 sive particles collected therein are delivered _by a 'journaled on suitable bearings, for _'delivering
screw conveyor 23 to an elevator 24, which may streams of abrasive particles against ‘the four 45
conveniently be of the bucket lift type. The ele
sides of the. billet 32. The various wheels have
vator 2| returns the abrasive material to the individual driving motors 38 with chain ‘belt driv
hopper I8 by means of a spout 25. '
ing connections 39 to the wheel shafts.
In order to clean all surfaces of the plates and
The abrasive delivered to the billets is collected
billets by use of the apparatus shown in Figures 1 after discharge from the wheels and impinging 50
and 2, it is obviously necessary to reverse the on the work, in hoppers 40 below the top and bot
articles on the conveyors I3 and I5. An arrange
tom wheels 31. It will benoted that there is a
ment whereby this can conveniently be e?'ected horizontally disposed wheel substantially in ver
55 is shown in Figure 8. From this figure, it will tical alinement with each of the vertically dis
be observed that the housing I0 is disposed be
posed wheels. The abrasive collecting in the'
tween an approach conveyor’ table 26 and a run
hoppers 40 is removed therefrom by. screw con-'
out conveyor table 21. Associated with the lat
veyors ‘I and elevators 42, whence .it is returned
ter is a mechanism indicated at 23 for turning to the wheels through supply conduits 43 and
60 the billets and plates for a second passage connections such as shown in Figures 1 through 4.
through the housing. -The turning mechanism
It will be apparent from the foregoing descrip
may be of any desired character. Separate ap
tion that our invention provides for the cleaning
proach and run-out conveyors may be provided of metal articles such as plates and billets, in a
for plates and billets, or a single set of tables very effective manner, with great rapidity and at
65 instead, with means for diverting the different very low cost. The apparatus shown is not cost
classes .of material along the respective paths ly to construct and can easily be built to havev a 65
through the housing III.
' '
long life. The type of wheel employed, as ex
Figures 3 and 4 illustrate a similar apparatus plained in the patent before mentioned, con?nes
which is adapted to clean both sides of a plate the abrasive material to the work and prevents.
70 in one operation. A portion of the apparatus unnecessary wear on the enclosing hqusing.- 'As
shown in Figure 3 is substantially the same as shown and described herein, the apparatus is sus
that of Figures 1 and 2 and the parts are indi
ceptible of variations to adapt it to perform dif
cated by the same reference numerals. As to the ferent functions. Plates and billets may be
remainder of the apparatus of Figure 3, the parts
75 thereof are designated by the same numbers as
cleaned on one side or on all sides'simultaneously,
as desired. Various widths of plates may be
2,1 iaesa
accommodated by using more or fewer wheels/ throwing wheel mounted on the opposite side of
said ?rst conveyor and adapted to project a
properly spaced. The e?ect of the blast of abra
sive material is to polish the metal surfaces as stream of abrasive against the other face of said
well as merely to clean them. The speed of travel
of the material may be increased by using a plu
rality of wheels in line to get a repetitive clean
ing or abrading action. The abrasive material is
collected and reeus'ed. It is also prevented from
escaping from the enclosing housing. Any in
10 jurious e?ect on workmen in the vicinity is there
by avoided.
While we have illustrated anddescribed here
in but one preferred embodiment of the inven
tion with certain modi?cations therein, it will be
apparent that numerous changes in the construc
tion and apparatus disclosed may be made with
4. Apparatus for treating metal surfaces com
prising a conveyor for passing sheet metal along
a predetermined path, means including a second
conveyor for passing a plurality of billets simul
taneously along a path substantially parallel to
a sheet on said ?rst conveyor, and a plurality of 10
‘centrifugal abrasive throwing wheels mounted
between said conveyors and mutually offset in a
direction transversely of said conveyors, said
wheels having means associated therewith for se
lectively controlling the direction of ?ight of the
out departing from the spirit of the invention
abrasive either against a sheet on said ?rst con
veyor or against billets on said second conveyor,
or the scope of the appended claims.
We claim:
streams which combine to sweep substantially
1. Apparatus for cleaning ?at pieces of metal
said wheels being positioned to project abrasive in
the entire width of a sheet on said ?rst conveyor. 20
or billets comprising a housing, a conveyor for
5. Apparatus for cleaning sheets or billets,
moving elongated metal therethrough, abrasive
throwing wheels mounted in the housing for rota
comprising a ?rst conveyor for advancingsheets
along a predetermined path, a centrifugal abra
sive throwing wheel mounted in'position to pro
ject a stream of abrasive against a sheet on said
tion, said wheels being spaced apart across the
width of the conveyor and along the path of ma-'
terial moving therealong, and a billet conveyor
on the opposite side of the wheels from the ?rst
mentioned conveyor, said billet conveyor being
conveyor, and a second conveyor on the opposite
side of said wheel from the ?rst conveyor, said -
second conveyor being adapted to convey billets
adapted to support billets with one diagonal
along a predetermined path past said wheel, and
plane substantially vertical while being moved.
means associated with said wheel for selectively
2. Apparatus for treating metal surfaces'com
controlling the direction of the stream of abra“
prising a housing, a ?rst conveyor for passing
sheet metal through said housing, a second con
veyor for passing billets through said housing,
sive either against a sheet on said ?rst conveyor
said conveyors being disposed substantially par
allel, and means for projecting a stream of abra
sive. said means including a centrifugal abrasive
throwing wheel mounted in said housing between
said conveyors, and means associated with said
4c wheel for selectively controlling the-direction of
or a billet on said‘ second conveyor.
6. Apparatus for treating metal billets com
prising a plurality‘ of conveyors adapted to con
and having means associated therewith for con-4
trolling the ‘direction of ?ight of the abrasive‘, 40
flight of the abrasive for impingement either
whereby it impinges simultaneously against billets
on both of said conveyors.
3. Apparatus for treating metal surfaces com
sheet metal through said housing, a second con
7. Apparatus for treating metal billets includ
ing a plurality of conveyors adapted to convey a
plurality of billets along spaced, parallel paths,
means including a centrifugal abrasive throwing
veyor for passing billets through said housing,‘ wheel for projecting a stream of abrasive against
said conveyors being disposed substantially par
allel, a centrifugal abrasive throwing wheel
mounted in said housing between said conveyors,
said wheel having means associated therewith for
selectively controlling the direction of ?ight oi
the abrasive either against one face of a sheet on
said first conveyor or against a billet on said sec=
0nd conveyor, and a second centrifugal abrasive
vey metal billets along predetermined, substan
tially parallel paths, a centrifigal abrasive
throwing wheel mounted adjacen?'aid conveyors
against a sheet on said ?rst conveyor or against
a billet on said second conveyor.
45 prising a housing, a ?rst conveyor for passing
one of the billets, means including a second cen
trifugal abrasive throwing wheel for projecting
a ‘stream of abrasive against the other of the
billets, and means including a third abrasive
throwing wheel for projecting a stream of abra
sive against both of the billets.
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