improvещение на щастие
Year: 1898

page_text: Date of Application, 19th Mar., 1898-Accepted, 14th Jan., 1899
improvещение на щастие
S
I, JOSEPH NATHANIEL HALIFAX, of 6130, La Salle Street, Chicago, United States
of America, Mechanical Engineer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention relates to machines intended for the purpose of making joints in
tubular articles, such as the frames of bicycles, of that kind consisting of an
external tubular part or socket and an inner tubular part the end of which is inserted
within the outer part or socket and distended into close contact with the inner
surface of the same; the inner surface of the socket being roughened by knurling
or like process so as to form interlocking recesses and projections in the interfitting
parts after the inner part has been distended or expanded within the outer one.
The invention relates more specifically to a machine employed for distending or
expanding the inner tubular part into contact with the socket in cases where the
socket constitutes a lateral branch or integral thimble upon a tubular fitting such as
The invention
is employed to join the frame members of a bicycle or for like uses.
consists in the matters hereinafter described and pointed out in the appended
claims.
A machine embodying my invention embraces as its main or principal features,
clamping devices for holding rigidly in proper relative position the tubular parts to
be joined, an expanded mandrel adapted to enter the inner tubular part and means
for supporting and actuating said expanding mandrel, embracing a supporting
mandrel which is adapted to extend through the transverse part of the crank
hauger or other tubular fitting to which the frame member is to be secured and
from which the expanding mandrel laterally projects. The expanding mandrel,
together with the means for supporting and actuating the same, constitute in
themselves an important part of my invention the same embracing in connection
with an expanding mandrel which is mounted on a longitudinal supporting mandrel,
of means mounted on the longitudinal supporting mandrel by which rotary motion
is given to the mandrel and the same is expanded during its rotary movement.
The invention may be more readily understood by reference to the accompanying
drawings, in which,
Figure 1 is a view in side elevation of a machine embodying the several features
of the invention.
Figure 2 is a plan view on an enlarged scale of the main working parts of said
machine.
Figure 3 is a cross section taken on line 3-3 of Figure 2.
Figure 4 is a longitudinal, detail section taken on line 4-4 of Figure 3.
Figure 5 is a view in perspective of the expanding mandrel and parts immediately
supporting and actuating the same.
Figure 6 is a view in side elevation of the parts shown in Figure 5.
Figure 7 is a plan section taken on line 7-7 of Figure 6.
Figure 8 is a plan view of the parts shown in Figure 5.
Figure 9 is a detail cross section taken on line 9-9 of Figure 8.

page_text: Figure 10 is a detail plan view of the parts for holding the fitting and frame tube
in position with respect to the expanding mandrel.
Figure 11 is a detail section on line 11-11 of Figure 10.
Figure 12 is a detail section on line 12-12 of Figure 10.
Figure 13 is a detail side view of the wedge block and its supporting bar.
Figure 14 is a plau view of a machine slightly differing from that shown in the
preceeding figures.
Figure 15 is a vertical transverse section thereof, taken on line 15-15 of Figure 14.
Figure 16 is a detail cross section, taken on line 16-16 of Figure 15.
Figure 17 is a detail longitudinal section, taken on line 17-17 of Figure 14.
As illustrated in said figures, A indicates the frame or bed of the machine which
is supported on suitable legs and upon which rests a horizontal bed plate A³ carrying
the operative parts of the machine. Upon the top of said plates A¹ is formed a
transverse guide rib A2 shown as made of dovetailed shape, the plate being provided
with lateral extensions a a¹ (Figure 3) over which the rib extends so that the rib
is made considerably greater in length than the width of the main part of the
plate. Rigidly secured to said plate by means of the said rib and a set screw or
screws which adjustably hold it in place is a block or casting B which carries
clamping devices, embracing a pair of clamping jaws C C¹ by which the tubular
frame member is clamped or held in place with respect to the socket of the hanger
or fitting. A second pair of clamping jaws D D Fig. 4 are adapted to have
clamping engagement with the socket within which the frame member is inserted
and expanded, for the purpose of holding said socket from expansion during the
operation of distending the end of the frame member within the same. Said
jaws D D are shown as unattached to other parts of the machine, although they
co-act with such other parts in the operation of the machine. Also mounted on the
guide rib A2 is a sliding clamping jaw E which acts upon the fitting at its side
opposite said socket to confine the said fitting closely in position with respect to
the frame member. In the drawings have shown a fitting F which constitutes
the crank hanger tube of a bicycle and is provided with integral tubular thimbles
or sockets ff, ƒ ƒ2, (Figures 5, 8 and 9), of which the socket f is the one in
which the frame member indicated by F¹ in the drawing is intended to be secured
by the use of the machine described.
When the parts are in position to be joined, longitudinal supporting
mandrels G¹ and H extend through the fitting F, said mandrel G¹ serving to
support the expanding mandrel and the mandrel II supporting parts by which the
expanding mandrel is actuated. A sliding wedge 1 is inserted between the
clamps D D when the latter are secured on the thimble f, and an opposing vertical
flange B¹ of the casting B; and acts on the outer face of said clamps D D₁ to press
or force the same toward the clamping jaw E. The mandrel H is movable eudwise
and attached to a sliding block J. The supporting mandrel G¹ is curved on its
outer face to fit the curvature of the interior of the fitting (Figures 3 and 8), and is
rigidly supported in place and held from movement under the pressure of the
wedge I by being attached at one end to a bracket M³ which is bolted to and rises
from the top surface of the plate A¹ and by bearing at its opposite end against a
supporting surface and the block J, herein shown as formed by a plate H¹ attached
to the mandrel H near the block J, Fig. 10. In placing the fitting upon the
machine, the same is slipped over the end of said supporting mandrel G at a time
when the clamp jaw B and the wedge I are retracted, and the supporting mandrel H
is shifted endwise away from said mandrel G¹. In placing the fitting in the
machine, the same is carried over the supporting mandrel G¹ until the expanding
mandrel G comes opposite the thimble f of the fitting; the mandrel is then inserted
in the thimble by lateral movement of the fitting, the clamping jaw E then advanced
into bearing contact with the fitting, the clamping jaws D D₁ (if not previously
clamped on the fitting) are then closed upon the thimble or socket and the wedge I
advanced so as to crowd the said clamping jaws toward the mandrel G₁ and clamping

page_text: jaw E, which latter jaw is accurately placed to hold the fitting in operative relation
to the supporting mandrel.
Referring now to the details of construction in the clamping devices referred to,
which will be described before the expanding devices are explained, such details
are as follows: The clamping jaws D D¹, as before stated, are made separate from
the other parts of the machine and are supported solely by their engagement with
the socket of the fitting. Said clasping jaws, as herein shown, consist of two
metal blocks having semi-circular recesses in their adjacent faces and joined by a
pivot d. Said jaws are held in clamping relation by means of two links dd which
are pivoted to the lower one of the jaws and at their upper ends to a hand lever d²
having a cam surface d³ which is adapted to act upon the upper jaw D¹ when said
hand lever is swung upon its pivot in a manner to foroe the upper jaw toward the
lower jaw. The sliding wedge I consists of a metal block which is provided with
a U-shaped notch forming two horizontal arms which straddle the frame member F1
at the time the wedge advances to act against the clamping jaws. The said wedge
is attached to a longitudinally arranged guide arm 1, Figures 2, 3 and 4, which
guide arm engages a guide groove or recess 6* formed in the upper surface of the
casting B below the said wedge. The said guide arm 1' is held or confined in the
casting B by means of a gib b which is secured to the casting by bolts or otherwise
and is provided at its upper part with a laterally projecting rib b which engages a
longitudinal groove i formed in the inner side face of the guide arm I¹. The said
wedge block I is attached to the rear end of the guide arm I' (referring to the
direction in which the guide arm is moved in advancing the wedge block) so that
said guide arm will support the wedge block in its horizontal movement and sustain
the same when in its retracted position. The flange B is inclined on its inner face
and the outer or bearing surface of the wedge block I is correspondingly inclined
so that as the block advances along the said inclined face of the flange, it will be
advanced toward the clamping jaws D D¹. The guide bar I is shown as inclined
to correspond with the direction of movement of the said wedge block. So far as
the operation of said wedge is concerned, it may be actuated by hand or in any
other desirable manner, but as herein shown it is operated by means of a sliding
block J which moves endwise on the machine frame and carries the endwise
movable supporting mandrel H. Said block J is provided with a lateral projection .J1
which is horizontally apertured for the passage of an operating rod 12 attached to
the rear end of the wedge block I. The rod I2 passes loosely through the pro-
jection J' so that said projection may slide freely on the rod and the end of the rod
which is attached to the wedge block may be free to move laterally to the slight
extent required by reason of the sidewise movement of said block.
Said operating
rod is provided with a nut i which forms a shoulder on the rod adapted for contact
with the projection J¹ when the block J is moved outwardly on the frame, the
contact of such projection with the nut serving to draw the rod outwardly and thus
carry the wedge block to its required position, as seen in Figure 10. A coiled
spring 13 is placed around the rod 12 between the rear end of the wedge block and
the projection J¹, said spring serving as a means of transmitting pressure from the
projection to the wedge block when the sliding block J is advanced to carry the
mandrel H through the fitting, said spring serving to force the block forwardly
with a yielding pressure, the extent of which depends on the tension of the spring.
The employment of a spring for this purpose avoids liability of the wedge block
being forced against the clamping jaws D D¹ with sufficient force to bend or injure
the fitting, it being, of course, understood that the spring is made sufficiently stiff
to insure the advance of the block to a position to firmly hold the said clamping
jaws from outward movement and thus insure the retention of the fitting accurately
in place with respect to the supporting mandrel G¹. The guide flange B³ is
arranged to extend above the level of the frame member F¹ in order to give a solid
bearing for the wedge block and said flange is provided with a notch, (as shown in
dotted lines in Figure 4) to give room for the passage of said frame bar.

page_text: Now referring to the clamping jaws C C¹ by which the frame bar is held or
supported in place, said clamping jaws are arranged to act laterally upon the frame
In the
tube and both jaws slide horizontally toward and from the said tube.
particular construction illustrated, the said casting B is provided with a wide,
horizontal, dovetailed groove on which the lower parts of both jaws are fitted to
slide. The jaws are thrown apart or separated to permit the insertion of the frame
tube by means of a spring c Figure 12. For actuating the said jaws a vertical rock
shaft is mounted in the casting D and projects upwardly through a yoke piece C¹³
attached to the jaw C and extending beneath the jaw C¹.
Said rock shaft is pro-
vided at its end with a band lever C and is provided within the yoke C³ with
opposite cam projections c¹ c², of which the cam projection c¹ acts on the outer face
of the jaw C¹ to force the same toward the jaw C while the cam projection c² acts
upon the yoke piece C³ to draw the jaw C toward the jaw C¹. Upon turning the
rock shaft so as to relieve the jaw C and the yoke C³ from pressure of the said cam
projections, the jaws will be opened by the spring c while the turning of the rock
shaft in a direction to bring the said cam projections against the said jaw C¹ and
yoke, has the effect of moving both jaws equally toward the frame tube and thus
accurately centering the tube while at the same time rigidly holding the same in
place with respect to the socket in which its end is to be secured.
Now referring to the devices shown for moving or actuating the clamping
jaw E, said clamping jaw is provided with a laterally projecting bearing pin e which
is engaged with the slotted end of the upright arm E of a bell crank lever, the hori-
zontal arm E2 of which extends outwardly from the machine frame and serves as a
hand lever for actuating the said jaw. Said bell crank lever is mounted on a pivot
stud e', attached to a depending bracket Es on the frame plate A¹. For the purpose
of bolding the clamping jaw rigidly and accurately in its advanced position or in
contact with the fitting F, a pivoted detent Et is provided, the same having an
actuating handle e² and a partially concentric and partially eccentric cam surface e³
When the said lever
adapted to engage a stud ét on the side of the lever arm E2.
arm is lifted to advance the clamping jaw into contact with the fitting, the detent E*
is then swung toward the same until its can surface es engages the said stud and
thereby positively holds the lever and the connected clamping jaw from backward
movement.
Now referring to the expanding mandrel G, the supporting mandrel G¹ therefor,
and the actuating devices on the supporting mandrel H, which parts co-act in the
operation of distending the inner frame tube into the outer thimble or socket f,
these parts are constructed as follows: The expanding mandrel is constructed
generally in the same manner that other expanding mandrels have heretofore been
made, the same consisting of a revolving cylindric shell G, a plurality of conical
rollers K which are inserted loosely within the shell and extend through radial
slots g in the outer face thereof, and a central, end wise movable rotating spindle K¹,
the outer end of which is made conical and enters between the rollers K and which
when revolved and at the same time advanced or thrust outwardly, serves to rotate
said rollers and at the same time force them radially outward against the tube to
be expanded; the rotary motion thus given to the rollers serving to carry the same
bodily upon or along the inner surface of the tube and thereby giving a corresponding
movement to the mandrel shell which necessarily moves or turns with them. The
rotative shell G2 is mounted to turn freely upon the supporting mandrel G1, the
connection between said shell and supporting mandrel, as herein shown, being
formed by means of a circular groove near the inner end of the shell, which circular
groove is engaged by means of annular segmental ribs formed in the ends of two
longitudinal plates G3 G3, (Figures 6 and 7), which plates are detachably secured
(conveniently by screws g¹ g',) to the metal bar which constitutes the main part or
body of said supporting mandrel. For giving rotary movement to the spindle K¹,
devices are provided as follows: Mounted upon said spindle is a gear piston L
through which the spindle is adapted to freely slide endwise but it is held from
turning on the spindle by means of a short spline on the pinion engaging a longi-

page_text: tudinal groovek Fig. 9 in the said spindle. The pinion L is held from endwise
movement with respect to the supporting mandrel G preferably by being inserted
between the body part G¹ of the mandrel and a separate intermediate plate G which
is arranged longitudinally of the mandrel and inserted between the body thereof
and the plates G3 G3; being held in place by the same screws g' which secure said
plates G³ to the mandrel body. The body of the mandrel being thicker than the
plate G the pinion is shown as sunk in a recess in the mandrel and as bearing
against the flat inuer face of said plate G⭑ The said pinion L is given rotary
motion by means of an endwise movable rack bar L' which is mounted to slide in
the mandrel G¹ and is actuated from a crank disk M through the medium of a con-
necting rod M, said crank disk being affixed to a shaft M2 which is mounted in a
suitable bearing m on the machine frame and carries a driving pulley M³. The
connecting rod M' is shown as engaging a stud m' attached to a sliding rod M* to
which the rack bar L is directly attached at its outer end (Figures 11 and 14),
said sliding block M* being mounted to slide horizontally in guides formed in the
bracket Ms attached to the top of the machine frame. Said rack bar is shown as
fitted within a guide groove formed in the lower part of the supporting mandrel G¹
in position to intermesh with the pinion L, said groove being formed between the
lower part of the body G¹ of the spindle and the plate G and the rack bar being
provided with a lateral rib g² which engages a longitudinal groove g³ formed in the
inner face of the said plate G*, (Figures 5 and 9).
The end wise movable and rotative spindle K' projects at its inner end past the
inner face of the supporting maudrel G₁ and is adapted for engagement with, and
given end wise movement by, a sliding wedge N which is mounted obliquely in the
supporting mandrel H and is provided with a lateral bearing surface, having contact
with the said spindle. Said wedge N is actuated by means of a hand lever O to
which the wedge is connected by means of a connecting rod 0, the hand lever
being mounted on the sliding block J which carries the said mandrel H. These
parts are so constructed that when the wedge bar N is advanced or forced forward
by pressure on the hand lever, it will act upon the inner end of the spindle K¹ to
force the same outward and thereby expand the rollers K against the tube in which
it is located; said mandrel being thus advanced at the same time that it is being
rotated by the rack and piniou gear described, so that the rollers will operate to
expend or stretch the tube in which they are placed in the same manner as in the
case of similarly acting expanding mandrels.
Referring to the details of construction in the mandrel H and the wedge N, said
mandrel is provided with an oblique guide passage and the end portion of the
wedge which engages the spindle K¹ is confined or held within the mandrel by means
of a separate holding strip H2 which is secured by screwshh to the upper wall of
the said recess or guide passage and engages at its rear or inner edge with an
upwardly projecting rib n formed on the rear edge of the wedge, (Fig. 9).
The mandrel H is convexly curved on its outer surface and adapted to fit or bear
closely against the inner surface of the fitting or hanger F so that lateral
movement of the mandrel, under pressure exerted on the actuating spindle of the
expanding mandrel through the medium of the wedge, is prevented; it being, of
course understood that the fitting itself is firmly held from any lateral or outward
movement by the clamping jaw E. As hereinbefore stated, the said mandrel H is
movable endwise, being attached to the sliding block J and such endwise movement
of the block is sufficient to enable the mandrel H to be withdrawn past the free end
of the supporting mandrel G so as to permit the tubular fitting to be easily placed
or slipped over the said supporting mandrel and the expanding mandrel G inserted
within the socket or laterally projecting thimble on the said fitting. After the
fitting has thus been placed over the supporting mandrel G¹, the sliding block J is
then advanced so as to carry the mandrel H into its place within the fitting and the
external clamping devices are then operated to clamp and hold the fitting as
hereinbefore described. For the purpose of giving motion to the sliding block J, a
hand lever J is shown as pivoted between its ends to the said block, so as to swing

page_text: in a horizontal plane, said lever being connected with the outer end of the casting B
by means of a connecting rod or link J³.
The clamping jaws D D¹ are mainly for the purpose of confining the thimble or
sockets from expansion under the action of the expanding mandrel during the
operation of the latter upon the end of the tubular part inserted within said socket
and said clamping jaws serve only incidentally as a means of holding the fitting or
hanger in place, inasmuch as they serve, after being clamped upon said socket or
thimble as a convenient means through which clamping pressure may be applied to
The
the fitting by the action of a clamping device such as the sliding wedge I.
clamping jaw E is intended to determine accurately the position of the fitting and
for this purpose is always brought up to a definite point or position and, therefore,
constitutes a stationary jaw or clamping member while the wedge block constitutes
an opposing movable clamping jaw or member which acts on the fitting through
the medium of the clamping jaws D D after the same have been clamped about the
thimble or socket of the fitting. The supporting mandrels G and H do not in
themselves necessarily serve as a means for clamping or holding the fitting in place;
the said mandrel being attached at one end only to the parts which support them.
When held in place by the wedge block I and jaw E, the fitting is, however, brought
closely into contact with the outer surface of the supporting mandrel G1, so that
said fitting is held accurately in place with respect to the expanding mandrel carried
by said supporting mandrel. The supporting mandrel H for the wedge bar is
mounted so as to rest in contact with the inner surface of the fitting and is held in
position when the wedge block is advanced by its contact with the inner surface of
the fitting, as before stated, the backward pressure of said mandrel being in fact
taken or carried not only by the clamping jaw E but by the metal of the fitting
itself, the stiffness of which tends to prevent backward movement of said mandrel
when the actuating spindle is driven forward between the rollers of the expanding
mandrel.
Figures 14, 15, 16 and 17 represent a machine which is, in all respects, like that
hereinbefore described with the exception that it is intended for the attachment of
two tubular frame members such as the rear forks F2 F2 to the rearwardly projecting
thimbles or sockets f2f2 of a crank hanger such as is shown in the other figures of
the drawing. The machine illustrated in this instance is provided with clamping
jaws D D which are like those before described with the exception that they are
provided with double sockets so as to engage at one time both of the thimbles f2 ƒ³,
said thimbles being shown in dotted lines in said Figure 14 within the clamps.
The machine shown in said Figure 14 also differs from that before described by
having a form of holding devices adapted to engage the outer ends of the frame
members FF in such manner as to hold them rigidly in proper operative position
with respect to the fitting when the latter is held in position by the clamping
devices which act thereon. The attachment for so holding the outer ends of the
rear fork members is shown in said Figures 14 to 17 as employed in place of the
clamping jaws C C₁, but they may be used in connection with similar jaws. Such
attachment is shown as secured to the casting B by insertion in the horizontal
dovetailed groove of said casting. Said holding attachment consists of a plate Q
which engages said casting B which is provided with two rearwardly projecting
parallel arms Q1 Q¹ the rear ends of which are connected by means of a transverse
plate Q2. The said plate is downwardly and outwardly inclined and in the upper
surface of the same is formed a guide groove of dovetailed form adapted to receive
a sliding plate P. To the top surface of said plate is secured an apertured holding
bar P having four transverse openings pp which are made of such size and so
located as to receive the lower portions or prongs of the slotted rear fork connecting
plates. The sliding plate P, together with the holding bar, is provided with means
by which it may be removed or shifted laterally upon the plates Q2; the same
consisting of a horizontal rock shaft Q3 mounted in a bearing 9 which depends from
the plate Q2 and provided with a hand lever Q' outside of said bearing and with an
actuating arm Q³, the free end of which is connected with the inner edge of the

page_text: stop P by means of a connecting link q. For the purpose of holding the said
plate P in the position to which it is moved or shifted, a set screw P2 is inserted
through the side of the plate Q2 and bears against the side edge of the said plate P.
In the particular construction illustrated, the apertured holding bar P¹ is built, or
made up, of two L-shaped bars p p secured to the top surface of the plate P and
separate filling blocks p2p which are secured to the L-shaped bars and to said
plate P by screws or bolts, but this construction is merely incidental to the special
imachine shown and is not essentiai.
It is to be understood that in the operation of the machine like that shown in
Figures 14 to 17, the mandrel support G1 will be provided with an expanding
mandrel which operates successively upon the two frame members; the fitting F
and the frame bars F2 F2 being moved laterally after one frame member is attached,
into position for the action of the expanding mandrel on the other frame member.
A construction embracing two mandrels may of course be used, in which case the
fitting F and the bars F2 will not need to be moved laterally to bring the said bars
into proper position with respect to the expanding mandrels. Such movement
of the frame members and fitting is provided for in the construction shown by
making the supporting bar P¹ with the two sets of openings p p located at such
distance apart that either set may be engaged with the outer ends of the rear
forks.
In the putting together of a bicycle frame, it will of course be understood that
a machine like that shown in Figures 1 to 13 may be used to secure to the hanger a
seat post member such as is shown at F3 in Figure 15, it being only necessary that
the clamping devices be so shaped as to receive the hanger when in the position
necessary for the insertion of said seat post member into the thimble or socket fl
of said hanger. Obviously, therefore, a machine embracing the features of con-
struction illustrated and described may be employed to secure all four of the frame
members of a bicycle to the hanger thereof.
One of the main features of my invention is embraced in the construction described
wherein an expanding mandrel is mounted on a supporting mandrel so as to project
at right angles therefrom and the said expanding mandrel is driven by gearing
mounted upon the supporting mandrel, so that the expanding mandrel may be
inserted in its operative position by first placing the tubular fitting over the
supporting mandrel and then moving said fitting sidewise until the expanding
mandrel is brought into the thimble of the fitting, and inasmuch as the expanding
mandrel may be driven by gearing other than the rack and pinion gear described,
I do not wish to be limited to the use of such special form of gear, except so far
as the same is specifically claimed as part of my invention.
Another principal feature of the invention is embraced in the construction by
which the driving spindle of the expanding mandrel is given endwise movement by
actuating means mounted in a mandrel which is adapted for insertion within the
fitting at one side of the supporting mandrel by which the expanding device is
sustained, and so far as this main feature of the invention is concerned, I do not
wish to be limited to the precise devices shown for giving rotative movement to the
spindle or for giving endwise movement to the spindle. The employment, for the
latter purpose, of a sliding wedge mounted on a second or auxiliary supporting
mandrel, is, however, an important part of my invention and is herein separately
claimed, as are other features illustrated which are in themselves novel.
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 I
claim is :--
1. The combination with a supporting mandrel, of an expanding mandrel mounted
upon the supporting mandrel and projecting laterally therefrom and gearing carried
by the supporting mandrel for actuating said expanding mandrel.
2. The combination with a supporting mandrel, of an expanding mandrel having
a rotative spindle, and means for actuating the latter embracing an endwise recipro

page_text: cating member mounted in said supporting mandrel and means for transmitting
rotative motion to said spindle from the said reciprocating member.
3. The combination with a supporting mandrel, of an expanding mandrel provided
with a rotative actuating spindle and means for driving the said spindle comprising
an endwise movable rack bar on the supporting mandrel and a pinion actuated by
said rack bar.
4. The combination, with a supporting mandrel, of an expanding mandrel mounted
upon and projecting laterally from said supporting mandrel, said expanding mandrel
being provided with a rotative actuating spindle, and means for actuating said
spindle embracing a pinion on the spindle, an endwise sliding rack-bar mounted on
the supporting mandrel, a power-driven crank-shaft, and a connecting rod for
driving the rack-bar from the crank shaft.
5. The combination with a supporting mandrel, of an expanding mandrel
consisting of a rotative shell mounted on the said supporting mandrel, conical rollers
mounted in said shell, an endwise movable actuating spindle having a conical part
engaging said rollers, gearing for driving said spindle comprising an endwise
movable member mounted on the supporting mandrel, gearing connecting said
endwise movable member with said spindle, a second supporting mandrel mounted
parallel with the first mentioned supporting mandrel and means on said second
mandrel for giving end wise movement to the said actuating spindle.
6. The combination with a supporting mandrel, of an expanding mandrel
projecting laterally therefrom and provided with a rotative and endwise movable
actuating spindle, and endwise sliding rack bar on the supporting mandrel, a pinion
on the actuating spindle engaging said rack bar, a second supporting mandrel
arranged parallel with the one first mentioned and a sliding wedge on said second
supporting mandrel acting on said spindle to give endwise movement thereto.
7. The combination of a supporting mandrel, an expanding mandrel mounted
thereon and projecting laterally therefrom, said expanding mandrel embracing an
endwise movable actuating spindle, a second supporting mandrel arranged parallel
with the one first mentioned and means on said second expanding mandrel for giving
endwise movement to said spindle, one of said mandrels being movable endwise with
respect to the other one to permit the insertion of both mandrels into a tubular fitting
from opposite sides thereof.
8. The combination with a supporting mandrel, of an expanding mandrel which
is mounted upon and projects laterally from said supporting mandrel, a second
supporting mandrel, means carried by said second supporting mandrel for actuating
one of the parts of the expanding mandrel, a sliding block on which said second
supporting mandrel is mounted, and a hand-lever connected with said sliding block
for actuating the latter.
9. The combination with a supporting mandrel, of an expanding mandrel which
projects laterally therefrom, means on the supporting mandrel for actuating the
expanding mandrel, and means for supporting a fitting in operative position with
respect to said expanding mandrel, comprising a main clamping jaw which is
movable laterally toward and from the supporting mandrel, laterally movable
clamping jaws adapted to engage a thimble on the fitting and clamping means
acting on said clamping jaws to force the latter and the fitting towards said main
clamping jaws.
10. The combination with a supporting mandrel, of an expanding mandrel, which
projects laterally therefrom, and ineans for supporting a fitting in operative position
with respect to said expanding mandrel comprising a main clamping jaw which is
movable laterally toward and from the supporting mandrel, laterally movable
clamping jaws adapted to engage a thimble on the fitting and clamping means
acting on said clamping jaws to force the latter and the fitting towards said
main clamping jaw comprising a sliding wedge.
11. The combination with a supporting mandrel, of an expanding mandrel
mounted thereon and projecting laterally therefrom, clamping means consisting of

page_text: clamping jaws which are movable toward and from the supporting mandrel and
adapted to engage a tubular fitting which surrounds said supporting mandrel and
separate holding means consisting of movable parts which are adapted to be moved
into position to engage and hold the tubular part after the latter has been placed
in position for the action thereon of the expanding mandrel.
12. The combination with a supporting mandrel, of an expanding mandrel
mounted thereon and projecting laterally therefrom, a clamping jaw which is
movable laterally toward and from the supporting mandrel, means for actuating
said clamping jaw embracing a detent by which the same is held at a definite point
and clamping means acting in opposition to said clamping jaw and operating to
hold the fitting adjacent to that side of the supporting mandrel on which the
expanding mandrel is located.
13. The combination with a supporting mandrel, of an expanding mandrel
mounted thereon and projecting laterally therefrom, a clamping jaw which is
movable laterally toward and from the supporting mandrel, means for actuating
said clamping jaw embracing a detent by which the same is held at a definite point
and clamping means acting in opposition to said clamping jaw and operating to
hold the fitting adjacent to that side of the supporting mandrel on which the
expanding mandrel is located, such clamping means embracing laterally movable
clamping jaws which embrace the thimble or socket in which the expanding mandrel
is inserted and a sliding wedge acting on said clamping jaws.
14. The combination with a supporting mandrel, of an expanding mandrel
mounted on and projecting laterally from said supporting mandrel, said expanding
mandrel embracing a longitudinally movable actuating spindle, a second supporting
mandrel arranged parallel with the one first mentioned and provided with
actuating means which operate on said spindle to give end wise movement to the
same, a movable block sustaining said second supporting mandrel, clamping means
for holding the fitting in position with respect to the said mandrels comprising a
sliding wedge block and operative connections between said wedge block and the
movable block for actuating the wedge block in the end wise movement of said
sliding block.
15. The combination, with a supporting mandrel, of an expanding mandrel
mounted thereon and projecting laterally therefrom, clamping means embracing
clamping jaws which engage the socket or thimble within which the expanding
mandrel is inserted, a sliding wedge-block acting on said clamping jaws, a second
supporting mandrel, means on said second supporting mandrel for operating a
movable part of the expanding mandrel, a movable block sustaining said second
supporting mandrel, and a spring located between the said sliding block and the
wedge-block, through which pressure is applied to the latter for advancing the same
to its clamping position.
16. The combination with a supporting mandrel, of an expanding mandrel
mounted on said supporting mandrel and projecting laterally therefrom, said
expanding mandrel embracing an endwise movable actuating spindle, a second
supporting mandrel parallel with the one first referred to, a sliding block on which
said second mandrel is mounted, a sliding wedge mounted in said second mandrel
and acting on said actuating spindle to give endwise movement to the same and a
hand lever mounted on said sliding block and connected with said sliding wedge to
give endwise movement to the latter.
17. The combination with a supporting mandrel, of an expanding mandrel
mounted on and projecting laterally from said supporting mandrel, clamping means
for supporting a tubular fitting in operative position with respect to said expanding
mandrel and holding means adapted for engagement with two tubular frame
members to hold the same in position with respect to the expanding mandrel, and
the thimbles of the fitting into which the end of said tubular frame members are to
be expanded; said holding means embracing two sets of holding recesses
sockets with either set of which the outer ends of the frame members may be
engaged..
or

page_text: 18. The combination with a supporting mandrel, of an expanding mandrel
mounted on and projecting laterally from said supporting mandrel, clamping means
for supporting a tubular fitting in operative position with respect to said expanding
mandrels and holding means adapted for engagement with two tubular frame
members to hold the same in position with respect to the expanding mandrel and
the thimbles of the fitting into which the ends of said tubular frame members are to
be expanded, said holding means embracing a laterally movable bar provided with
two sets of holding recesses for engagement with the said tubular frame members
and means for holding said bar from movement when engaged with said frame
members.
1
101
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.