Improvements in Apparatus for Expanding, Beading, and Cutting Tubes, and for Drilling and Broaching Holes in Tube-plates and the like, and for Performing similar Operations.
Year: 1896

page_text: Date of Application, 20th Feb., 1896
Complete Specification Lelt, 20 h Nov., 1596-Accepted, 6th Feb., 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Expanding, Beading, and Cutting
Tubes, and for Drilling and Broaching Holes in Tube-plates and
the like, and for Performing similar Operations.
I, SIMON SCHREIBER, of 164 Fenchurch Street, in the County of London,
Merchant, do hereby declare the nature of this invention to be as follows:-
My invention relates to apparatus such as is described in the Specification of
former Letters Patent granted to myself and William Tully and dated 19th July 1894,
No. 13947, for securely fastening the ends of tubes in the tube-plates of boilers,
condensers and the like, for cutting out old tubes, broaching the holes in the
tube-plates and performing other operations; and my said invention is chiefly
designed to further improve the construction and increase the efficiency of such
apparatus.
According to one part of my present invention, instead of making the roller-case
with recesses so formed that, when the removable end-piece or, cap is secured in
place, the rollers or their substitutes will be retained in the said recesses by the
overlapping edges of the same, as described in the said former specification, I
accomplish this result as follows, riz.-I make the said rollers or their substitutes
with flat or approximately flat ends which fit closely against corresponding flat
surfaces in the recesses or cavities in the roller-case and on the removable or
detachable end-piece or cap, so that, when the said cap is in place, the said rollers
or their substitutes are capable of lateral movement only in a direction parallel to
the end walls of the said recesses; and to prevent the escape of the said rollers,
or the like, they are each provided with a pivot, stud or other projection at one
end which engages in a radial groove or slot in an intermediate plate or annular
piece secured between the roller-case and the removable or detachable end piece or
cap thereof; or the said slots may, if desired, be formed in the cap itself. By these
means the said rollers or their substitutes, whilst being free to move laterally or
radially to the required extent in the said recesses, are prevented from escaping
therefrom, as the said slots are closed at their outer end, and, when the said slotted
plate or annular piece is firmly secured in place between the roller-case and its cap,
it is impossible to remove the said rollers or their substitutes by tilting, because
their flat ends will only allow them to move parallel to the end walls of the
recesses. It is obvious that in the case of the rollers, the pivot or other projection
must be arranged axially, so as to permit the necessary rotary motion of the roller.
In the case of the tube-cutters or broaching-cutters, however, the said pivot or
projection may be otherwise arranged.
According to another part of my said invention, I provide for more efficiently.
supporting and centring the tool or implement when in use for cutting out old or
damaged tubes. When performing this operation, it is obvious that if the implement
be not held with its axis coincident with the axis of the tube, each of the cutters will
cut a separate groove in the interior of the tube; and also that, if the whole weight
of the implement is supported on the edges of the said cutters, they will be very
liable to be broken, thus rendering the implement useless for the time being, that
is to say, until the broken cutter is replaced. Now according to this part of my said
invention, I obviate these disadvantages by providing a conical collar. or ring which

page_text: can be fitted and secured, when desired, upon the body of the roller-case; this
conical collar or ring, when the implement is inserted into a tube, enters the end
of the said tube and automatically centres and supports the end of the implement,
thus relieving the cutters of lateral stresses and ensuring that they shall accurately
follow one another around the same groove and thus cut through the wall of the tube
in the minimum space of time. This conical collar or ring is preferably hardened on
its outer surface so as to resist the abrasive action of the edge of the tube, and is
provided with a set-screw or the like for securing it in position on the body of the
roller-case so that it can be readily removed therefrom when desired. The taper of
the cone is preferably so arranged that the said conical collar or ring will operate
efficiently with all diameters of tube within the capacity of the tool or implement.
My said invention, moreover, comprises improvements in the construction of the
tube-cutting and broaching-cutters, whereby I am enabled to more easily harden the
cutting parts and to provide for replacing the same when worn or damaged without
it being necessary to also replace the entire block or piece carrying the said cutting
parts. For this purpose 1 make separate blades or cutters and insert the same in
grooves or recesses formed in the blocks or pieces which fit into the recesses or
cavities in the roller-case, the said blades or cutters being firmly secured in place in
the said grooves by screws, pins or in any other suitable manner. By this method of
construction the cutters can be more efficiently made, hardened and ground than
heretofore and can be replaced at a comparatively trifling cost when worn out or
damaged. The tube-cutters are preferably ground so that their rear or trailing edges
clear the work, i.e. they are "backed-off" and in this manner the tube is divided by
actual cutting of the metal instead of by a rubbing or drawing action of the cutters
as heretofore.
Dated the 20th day of Bahnua 180
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in Apparatus for Expanding, Beading, and Cutting
Tubes, and for Drilling and Broaching Holes in Tube-plates and
the like, and for Performing similar Operations.
I, SIMON SCHREIBER, of 164 Fenchurch Street, in the County of London,
Merchant, do hereby declare the nature of this invention and in what mauner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention relates to apparatus such as is described in the Specification of former
Letters Patent granted to myself and William Tully and dated 19th July 1894,
No. 13947, for securely fastening the ends of tubes in the tube-plates of boilers,
condensers and the like, for cutting out old tubes, broaching the holes in the tube-
plates and performing other operations; and my said invention is chiefly designed to
further improve the construction and increase the efficiency of such apparatus.
According to one part of my present invention, instead of making the roller-case
with recesses so formed that, when the removable end-piece or cap is secured in place,
the rollers or their substitutes will be retained in the said recesses by the overlapping
edges of the same, as described in the said former specification, I accomplish this
result as follows, viz. -I make the said rollers or their substitutes with flat or
approximataly flat ends which bear against correspondingly flat surfaces in the
recesses or cavities in the roller-case and on the removable or detachable end-piece
or cap, or on an, intermediate plate or annular piece hereinafter described, so that,

page_text: when the said cap is in place, the said rollers or their substitutes are capable of
lateral movement only in a direction parallel to the end walls of the recesses or
cavities in which they are enclosed; and to prevent the escape of the said rollers or
the like, I provide each of them with a pivot, stud or other projection at one end
which engages in a radial groove or slot in an intermediate plate or annular piece
secured between the roller-case and the removable or detachable end-piece or cap
thereof, such slot extending nearly but not quite as far as the periphery of the said
plate or annular piece; or the said slots may, if desired, be forined in the cap
itself, the intermediate plate or annular piece being dispensed with. By these means,
the said rollers or their substitutes, whilst being free to move laterally or radially
to the required extent in the said recesses or cavities, are prevented from escaping
therefrom, because the said slots are closed at their outer end, and, therefore, when
the said slotted plate or annular piece is firmly secured in place between the
roller-case and its cap, it is impossible to remove the said rollers or their substitutes
by tilting, since their flat ends will only allow them to move parallel to the end walls
of the recesses or cavities in which they are situated. It is obvious that, in the case of
the rollers, the pivot or other projection must be arranged axially so as to permit
the necessary rotary motion of the roller. In the case of the tube-cutters or
broaching cutters, however, the said pivot or projection may, if desired, be otherwise
arranged.
According to another part of my said invention, I provide for more efficiently
supporting and centring the tool or implement when in use for cutting out old or
damaged tubes. When performing this operation, it is obvious that, if the implement
he not held with its axis coincident with the axis of the tube, each of the cutters will
cut a separate groove in the interior of the tube; and it is also evident that, if the
whole weight of the implement is supported on the edges of the said cutters, they
will be very liable to be broken, thus rendering the implement useless for the
time being, that is to say, until the broken cutter is replaced. Now according to
this part of my said invention, I obviate these disadvantages by providing a conical
collar or ring which can be fitted and secured, when desired. upon the body of the
roller-case; this conical collar or ring, when the implement is inserted into a tube,
enters the end of the said tube and automatically centres and supports the end of the
implement, thus relieving the cutters of lateral stresses and ensuring that they shall
accurately follow one another around the same groove and thus cut through the wall
of the tube in the minimum space of time. This conical collar or ring is preferably
hardened on its onter surface so as to resist the abrading action of the edge of the
tube, and is provided with a set-screw or the like for securing it in position on the
body of the roller-case so that it can be readily secured thereon and removed
therefrom when desired. The taper of the cone is preferably so arranged that the
said conical collar or ring will operate efficiently with tubes of all diameters within
the capacity of the tool or implement.
My said invention, moreover, comprises improvements in the construction of the
tube-cutters and broaching-cutters, whereby I am enabled to more easily harden the
cutting parts and to replace the same when worn or damaged without the necessity
for replacing the entire block or piece to which the said cutting parts are attached.
For this purpose I make separate blades or cutters and insert the same in grooves or
recesses formed in the blocks or pieces which fit into the recesses or cavities in the
roller-case, and I secure the said blades or cutters firmly in place in the said grooves
by screws, pins or in any other suitable manner. By this method of construction,
the cutters can be more efficiently made, hardened and ground than heretofore, and
can be replaced at a comparatively trifling cost when worn out or damaged. The
tube-cutters are preferably ground so that their rear or trailing edges clear the
work, i.e. they are "backed-off," and in this manner the tube is divided by actual
cutting of the metal instead of by a rubbing or drawing action of the cutters as
heretofore.
In the accompanying drawing I have shown how my sail invention may be
conveniently and advantageously carried into practice.

page_text: Figure 1 is a sectional elevation of one form of my improved implement, showing
the same adapted for use as a tube-expander.
Figure 1 shows a portion of the implement as adapted for cutting out old tubes..
Figure 2 is a transverse section on the line a, a, Figure 1.
Figure 3 shows a face view and a transverse section of the aforesaid intermediate
slotted plate or annular piece.
Figure 4 shows a face view and a transverse section of the end-piece or cap of
the roller-case.
Figure 5 shows an end elevation and a transverse section of the conical collar or
ring hereinbefore mentioned.
Figure 6 is a side view, and
Figure 7 an end view of my improved tube-cutter, and
Figure 8 is a side view, and
Figure 9.an end view of my improved broaching cutter.
a is the taper mandrel; 6 is the roller-case; c is the ratchet for rotating the
implement; d is the ring or collar for determining the extent to which the roller-
case b shall be inserted into the tube to be operated upon; e, e are the rollers.
The rollers e shown in the drawing are taper or conical and are made with flat
ends, a pivot or stud el being provided on the larger end of each roller. The said
rollers are inserted in the usual recesses or cavities in the roller-case b, which
recesses or cavities are made with parallel sides instead of with converging sides as
heretofore, and without any overlapping parts for retaining the rollers in place. The
said pivots or studs el work freely in radial slots f' in a plate or annular piece f
secured between the roller-case b and the end-piece or cap thereof, the screws
serving to secure in place both the ring f and the cap h. The slots f¹ being closed
at their outer end and the rollers e being made with flat ends, it is evident that the
said rollers cannot come out or be taken out of the roller-case b until the screws g are
slackened, when they can be very readily removed and the tube-cutters or broaching
cutters hereinafter described substituted for them. If desired the ring can be
dispensed with, and radial slots like the slots be formed in the inner side of the
cap to receive the pivots or studs el of the rollers e.
k is the aforesaid conical collar or ring, which is fitted upon the roller-case b and is
secured thereon by means of a set-screw k¹. This collar or ring & fits into the end of
the tube as shown in Figure 14, and will keep the implement central in the said tube
and support the said implement while the said tube is being cut thereby through the
medium of the tube-cutters.
of
In Figures 14, 6 and 7, I have shown my improved tube-cutter, the body
which is made of such form that it can be inserted into one of the recesses or cavities
in the roller-case in place of the roller removed therefrom, and is formed with a stud
or projection to engage in the corresponding slot in the ring f. A removable
cutter m is fitted into a transverse groove 2 in the body and is secured therein by
a screw 13.
The body of the broaching-cutter shown in Figures 8 and 9 is formed in a
somewhat similar manner, and has a stud or projection » at one end to enter a
slot in the ring. It is provided. with a removable cutter p which is fitted into
a longitudinal groove 2 in the body n and is secured therein by means of a screw.n³.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :-
First. An apparatus for the purposes above specified, in which the rollers or their
substitutes are made with.flat or approximately Hat ends, and with a pivot, stud.or
projection at one end engaging in a radial slot in the end-piece or cap of the
roller-case, or in an intermediate plate or annular piece, whereby the said rollers or
their substitutes are retained in recesses or cavities in the said roller-case made with
parallel sides and without overlapping edges, substantially as herein before described.
Second. The employment of a conical collar or ring on the roller-case. for centring

page_text: the implement in the tube to be operated upon, substantially as herein before
described.
Third. A tube-cutter comprising a grooved body and a removable cutter fitted and
secured in the groove thereof, substantially as hereinbefore described.
Fourth. A broaching cutter comprising a grooved body and a removable cutter
fitted and secured in the groove thereof, substantially as hereinbefore described.
Dated the 20th day of November 1896.
D. Young & Co.,
S. SCHREIBER.
11 & 12 Southampton Buildings, London, W.C., Agents for the Applicant.