Improvements in Machinery for the Preparation of Tubular Members for certain Brazeless-jointed Cycle and Analogous Frames.
Year: 1898

page_text: Date of Application, 23rd May, 1898
Complete Specification Left, 20th Oct., 1898-Accepted, 10th Dec., 1898
Improvements in Machinery for the Preparation of Tubular Members
for certain Brazeless-jointed Cycle and Analogous Frames.
I, CHARLES HARVEY, of The Swifts, South Yardley, near the City of Birmingham,
Works Manager, do hereby declare the nature of this invention to be as follows:-
This invention relates to machinery for the preparation of tubes to be employed
in the construction of that type of brazeless jointed cycle framings and analogous
structures in which the ends of the tubes are formed with annular beadings which
socket into the junction lugs and around and between which, the walls of the
latter are contracted or gathered in by a rolling or spinning process, thus rigidly
securing the members and lugs together and forming a framing.
The improved machinery constituting my invention, is for the purpose of
forming the said annular beadings or outward bulgings around the ends of the
tubular members, prior to their introduction into the sockets of the junction lugs, and
consists generally in means for creasing or wheeling the walls of the members
from the inside, outwardly into annular channels or recesses formed within the
bore of a split or sectional die, with both the tube and die having rotatory
movements.
According to one form of the improved machine, I mount upon a bed, a rotatory
frame having hollow end journals working within bearings of upright or other
suitable brackets. This frame may consist of a pair of bars connecting together end
plates, with a driving pulley at one end, whilst at the other end, the journal is
extended into a carrier for the die, which is split or formed in sections and has
annular grooves in its bore, corresponding to those which are to be formed upon
the tube. The upper half of the die carrier may be hinged or otherwise removably
fitted to facilitate the turning away of the same and is kept in its closed down
position by a screw passing through a screw box formed in a cross head carried
by straps slipped over and carried by the extension of the said frame and capable of
being driven round therewith. Mounted between the. bars of the frame and so
constructed as to be capable of being adjusted relatively thereto and secured to it,
is a chuck for clamping the tube to be operated upon to the said frame and which
may consist of sections which are held to one another and to the frame bars
by set pins and contain between them adjustable jaws for the clamping of
the tube.
Directed in a line with the general major axis of the die is a spindle or mandril
having outward beadings or annular swells, corresponding to the grooves of the die,
said spindle being mounted in bearings and driven by a pulley, the said bearings
being carried upon a bed arranged so as to be capable of movement in two
directions relative to the principal bed or foundation of the machine, so that the
impressing or bulging roller may, by suitable levers, be moved both in the longer
general direction of the machine for taking it into and out of the throat of the die,
and also laterally, or in a direction at right angles to the axis of the die so as to
bring the same into operative contact with the inside walls of the tube to be

page_text: operated upon lying within the die. Adjustable stops are provided on the main
bed of the machine for limiting the movements of the laterally and longitudinally
sliding parts of the saddle or supplementary bed carrying the bulging roller or
tool, whilst a spring or spring may be arranged in connection with the cross slide,
which, acting in conjunction with one of the said stops, tends to keep the roller
normally in a line with the axis of the die.
In operation, a tube which is to be prepared by the formation of one, two or a
series of bulgings thereon, is passed into the machine preferably through the hollow
journal of the rotating frame and into the axis of the die and is
adjusted centrally therewith; the sections of the die are closed by the screw
and the tube is firmly held by closing together the jaws of the chuck. The roller
or spindle is next advanced into the interior of the tube, and when its beadings
are coincident with the annular sinkings in the die, it is held in that position by a
stop on the bed. Both the die and tube and also the roller are caused to rapidly
rotate, at nearly the same speed, and then, by means of another lever or by a hand
wheel and screw or equivalent means, the cross slide carrying the roller is moved
laterally and the roller is forced into intimate contact with the tube and gradually
expands portions of the same outwardly into the sinkings of the die, the tool or
roller being caused to follow the expansion by increasing the pressure applied by
the hand lever or equivalent.
When the creasing is completed the pressure applied to 'the roller tool is relieved,
and the said roller is withdrawn out of the jaw of the die, the sections of which are
opened, so that the tube, after being unclamped from the chuck, is free to be
removed from the machine.
Datadhi 20th J. of M 1000
CHARLES HARVEY.
By Henry Skerrett,
Agent for Applicant.
Improvements in Machinery for the Preparation of Tubular Members
for certain Brazeless-jointed Cycle and Analogous Frames.
I, CHARLES HARVEY, of The Swifts, South Yardley, near the City of Birmingham,
Works Manager, 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 machinery for the preparation of tubes to be employed
in the construction of that type of brazeless jointed cycle framings and analogous
structures in which the ends of the tubes are formed with annular beadings which
socket into the junction lugs and around and between which, the walls of the
latter are contracted or gathered in by a rolling or spinning process, thus rigidly
securing the members and lugs together and forming a framing.
The improved machinery constituting my invention is for the purpose of forming
the said annular and outward or inward beadings or bulgings around the ends of
the tubular members, prior to their introduction into the sockets of the junction
lugs, and consists, in the principal part, in means for creasing or wheeling the
walls of the members from the inside, outwardly into annular channels or recesses
formed within the bore of a split or sectional die, with both the tube and die having
rotatory movements.

page_text: Figure 1 of the accompanying drawings represents a front elevation of the
improved tube-end creasing machine constructed according to my invention.
Figure 2 is a horizontal section of the machine upon the dotted lineæ, Figure 1
and showing some of the parts thereof in topside plan.
Figure 3 is a like view, partly in horizontal section and partly in plan, of a
portion of the machine as in Figure 2, but shown upon an enlarged scale and with
the creasing mandrel or tool withdrawn from out of the bore or the grooved die.
Figure 4 is a cross section of the machine upon the dotted line el, Figure 1, upon
the same scale as Figures 1 and 2.
Figure 5 is an elevation, upon an enlarged scale, of the sectional chuck or holder
for clamping the tube to its rotating carrier frame.
Figure 6 is a cross section of Figure 5 upon the dotted line a².
Figure 7 represents the split or sectional groove die in cross section upon the
dotted line 3, Figure 1, and upon the same scale as Figures 5 and 6. This view
shows the sections of the die closed, whilst
Figure 8 is a like sectional view as Figure 7, but showing the sections opened to
admit of the removal of the creased end of the tube therefrom.
Figure 9 is a further section, upon the dotted line a, Figure S, of the said dies
in their opened position, showing the disposition of the grooves into which the
metal of the end of a tube is bulged or creased by means of the rotating tool.
Figure 10 shows a tube end upon which a pair of outward bulgings have been
formed by my machine.
The same letters of reference indicate corresponding parts in the several figures
of the drawings.
a is the bed or foundation of the machine, supported by suitable legs or
standards a¹, and having mounted preferably upon the left hand part of it, a
rotating frame b and consisting of a pair of bars b₁, connecting together an end
plate 62, and a driving pulley 63, which respectively have hollow journals 64, 65,
working with bearings carried by upright brackets 66, 67, mounted upon the bed
plate. The journal 64, of the end plate 62, is extended into, or has attached to it, a
carrier c, for the die d, which is of the same diameter internally as the outside of
the tube to be operated upon, and is split or formed in two sections d¹, d², secured
to the carrier by screws d³, and formed with a series of annular grooves d³, in its
bore, corresponding to the outward bulging or beadings e', which are to be formed
upon the tube e.
One half e, of the carrier is removably fitted and is jointed acc²,
to the fixed or standing part c³, so as to facilitate the turning away of the same and
it is kept in its closed down position by a screw f, passing through a screw box f¹,
formed in a cross head f2, carried between a pair of loose straps f³, encircling fixed
parts c, on either side of the die holder and being confined between an annular
shoulder c³, and a stop plate or ring 6, secured to end face of the said holder, which
has an all-through clearance &, coinciding with the bore of the die and the hollow
of the journal 64, and through which the impressing roller or tool, as hereinafter
described, is passed into the interior of the said die for acting upon the tube
within it. When the parts of the die-holder are in their closed positions, the
impingement of the screw f, against the bearing 8, secures the straps to the
holders, which then rotate together.
Mounted between the bars 61, of the rotating carrier frame b, is a chuck g, for
clamping the tube e, to be operated upon to the said frame, so that the frame b,
tube e, die carrier c, and its accessories with the die d, may all rotate together and
in a common direction. The said chuck is sectional and so constructed as to be
capable of longitudinal adjustment relative to the dies in order to accommodate
varying lengths of tubing. It consists (in the arrangement represented) of a fixed
body part g, having top and bottom clearances g², adapted to receive the loose or
removable sections 3, which are recessed at g, and within these recesses and
corresponding recesses g³, of the fixed body part, the bars b', of the frame are
clamped when the loose sections are secured to the fixed part by means of the screw
pins go, whereby the chuck is made fast to the frame in any position in which it

page_text: may have been adjusted. The middle of the fixed body part is also gapped or
deeply slotted at g, from the one side to receive the tube gripping blocks, 98, g",
which have concaved ends or jaws g10. One of these jaw blocks may be fixed or
stationary and the other relatively adjustable for opening and closing by means
of a screw gl, whose inner and plain end is swivelly connected at g12, to the sliding
block. The said jaw-blocks are retained within the gap g, by means of a plate gl³,
screwed to the face of the chuck and having a central clearance g¹, for the tube,
as seen in Figure 2.
The means for acting upon parts of the metal of the walls of the tube and forcing
the same outwardly into the annular grooves of the die consists of a rotating
mandrel or spindle h, arranged parallel to the longer direction of the machine
and having upon one end, a series of outward beadings or annular swells h',
arranged at the same distances apart as the grooves of the die. The said spindle
is made fast to a sleeve hº, running in bearings supported by a bracket h², and
having keyed to its outer end a pulley ³, by which the said spindle is rotated,
preferably in a direction opposite to that in which the die is driven. The bearing
bracket or carrier of the spindle is carried or so arranged as to be capable of move-
ment in two directions relative to the bed or foundation of the machine, so that the
impressing or creasing roller may, by suitable levers, be moved both in the longer
general direction of the machine for taking it into and out of the throat of the
die, and also laterally, or in a direction at right angles to the axis of the die so as to
bring the same into operative contact with the inside walls of that part of the tube
lying within the die.
Thus, the base h, of the bracket h², is extended into a slide directed across the
bed or foundation plate and is dovetailed to take and slide within a corresponding
cross groove or seating ³, formed in the top face of a second and longitudinally
traversing slide i, mounted upon the bed a, and capable of being traversed thercon
in the longer direction of the machine. The cross traverse of the sliding bracket h³,
is effected by means of a rocking lever h, pivoted at 2, to the end of the slide i,
and having the upwardly directed short arm h, engaging in a slot h8, in the base
plate, whilst the longitudinal movement of the said slide i, upon which the whole
of the parts accessory to the creasing spindle are mounted, is imparted by means
of a lever, pivoted at 23, to the bed and connected with the said slide through a
jointed rod . Adjustable stops ³, 26, are provided upon the slide i, for limiting the
cross movement of the bracket h², whilst the slide itself may either be limited
between like stops carried by the bed of the machine, or by the edge of the lever 12,
coming against a shoulder , on the connecting rod 24, whilst a spring or springs
(not shown) may be arranged in connection with the bracket h³, so acting in
conjunction with either of the stops 25, 20, as to tend always to keep the creasing
spindle in aline with the axis of the die.
In operation, a tube which is to be prepared by the formation of one, two or a
series of bulgings thereon, is passed into the machine preferably through the hollow
journals of the rotating frame and into the axis of the die and is adjusted centrally
therewith after which the sections of the die are closed around it by means of the
screw and the tube is firmly held by closing together of the jaws of the chuck. The
roller or spindle is next advanced into the interior of the tube by traversing the
slide i, longitudinally until its beadings come coincident with the annular sinkings
in the die, when it is held in that position by the stop or limiting means arranged in
conjunction with it. Both the die and tube and also the roller are caused to
rapidly rotate, at nearly the same speed, and then, the cross sliding bracket 2,
carrying the roller or creasing mandrel is moved laterally and its acting beadings is
forced into intimate contact with the tube and gradually expand portions of the
same outwardly into the sinkings of the die, the tool or roller being caused to follow
the expansion by increasing the pressure applied by the hand lever or equivalent.
When the creasing is completed, the pressure applied to the roller tool is relieved,
and the said roller is withdrawn out of the jaw of the die, the sections of which
are then opened, as represented in Figures 8 and 9, so that the tube, after being

page_text: unclamped from the chuck, is free to be removed from the machine by longitudinally
withdrawing it from the separated jaws of the chuck and through the hollow
journals of its rotating carrier frame.
I wish it to be understood that I do not confine myself to the particular con-
struction of chuck or means for clamping the tube to its rotating carrier herein
described, and also that instead of employing levers for giving the relative trans-
verse and longitudinal movements to the compound bracket or rest of the creasing
spindle, I may employ hand-wheels and screws or other equivalent mechanism.
The means for closing the sections of the grooved die and the arrangement of the die
carrier may also be varied without departing from the nature of my invention.
Further instead of the creasing roller or mandrel being driven by means of a band
and pulley it may be arranged to be stationary or be free to rotate without being
driven by bands or gear.
By this part of my invention the gauge of that portion of the tube in which the
beadings are formed is preserved and there is no distortion of the walls, owing to
the same being confined within a die whose bore is of exactly the same diameter
as the outside of the tube, and as the end of the tube, outwards of the creasings,
thus remains at its normal and original diameter, it admits of being fitted into the
socket of a frame junction lug designed for its reception without requiring any
trueing or finishing after being removed from the creasing machine.
My improved machinery is also applicable to the formation of inward grooves or
channel bulgings around parts of tubular lengths, this being effected by providing
the die sections with one or more ribs or contractions of the bore corresponding to the
annular channellings to be made whilst the rotating mandrel or roller is grooved
with sinkings corresponding to the ribs on the die.
Figure 11 represents a view, partly in section and partly in elevation, of such a
die and roller, with a fashioned tube between them, c being the die carrier, d¹, d², the
sections of the die, having internal ribs d³; h, the roller, grooved at h¹, and e is
the tube, within which annular depressions or inward bulgings e¹ have been formed
by the action of the tools.
The sections of the die are so mounted and arranged as to admit of being pro-
gressively brought closer and closer together as the creasing proceeds, by means
of screws or the like, thus following up the action of the tools upon the tube.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
-
First: In a machine for forming outward beadings or creasings upon tubing,
the employment of a rotating and sectional die having one or more internal grooves
or sinkings corresponding to the beadings to be produced and within which the part
of the tube to be operated on is secured so that they rotate together, and which said
die is arranged in conjunction with a mandrel or roller having ribs or beadings
corresponding to the grooves of the die, and being either driven, or freely-rotating
or stationary, substantially as described and set forth.
Secondly:--In a machine for forming inward or outward beadings or creasings
upon tubing, the employment-in conjunction with a sectional and internally-
grooved or internally-ribbed die, within which a part of the tube to be creased is
secured of a beading or creasing roller or mandrel, so mounted as to admit of
being moved in either of two directions relative to the said die by means of separate
and independently-operating levers or equivalent means, substantially as and for
the purpose described and set forth.
Thirdly: In a machine for forming beadings or creasings upon tubing, the
employment of a rotating or driven carrier frame provided with a chuck for securing
the tube to be operated on and having in connection with it, a sectional creasing
die, the arrangement being such that the carrier frame, the tube and the die admit
of being bodily rotated together, substantially as and for the purpose described
and set forth.

page_text: Fourthly In a machine for forming beadings or creasings upon tubing, the
combination with a rotating carrier frame having hollow bearings and to which the
tube to be operated upon is secured by an adjustable chuck, and provided with a
die-holder fitted with a sectional creasing die-of a driven creasing spindle or
mandrel mounted in a bracket or support capable of being traversed at right angles
to the bed of the machine by a lever or the like and carried upon a slide adapted to
be longitudinally moved upon the said bed by a second and independently-operated
lever or equivalent, the whole of the said parts being arranged and operating
substantially as and for the purpose herein described and set forth.
Fifthly: In a machine for forming beadings or bulgings upon tubing, the
particular construction of adjustable chuck represented separately in Figures 5
and 6, provided with means for effecting its own connection with the rotating carrier
frame and with clamping jaws for securing the tube to be operated to the said
frame and within the die, substantially as described and set forth.
Sixthly: In a machine for forming beadings or bulgings úpon tubing, the
improved construction of die-holder consisting of a fixed part and a jointed part,
respectively fitted with sections of the die, in combination with loosely mounted
straps, a cross head and a closing screw arranged and operating substantially as and
for the purpose herein described and set forth.
Ta 104. 1
1000
CHARLES HARVEY.
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.