US1232316A - Machine for making pipes and conduits. - Google Patents

Description

W. R. HUME.

MACHINE FOR MAKING PIPES AND CONQUITS.

APPL ICATIDI FILED JAN. 13. I914.

Patented July 3, 1917;

PAT NT OFFICE warren amnuim nun, or ADELAIDE, scum aosrnama, aus'rnama.

nacnnm Ion maniac PIPES am) GONDUITS.

Britain, residing at Flinders street, Ade-' laide, in the State of South Australia, Commonwealth of Australia, have invented certain new and useful Improvements i'nMachines for Making Pipes and Conduits, of which the following is a specification.

My invention relates tomachines for making pipes and conduits, and has for its primary object to provide an improved construction, combination, and arrangement of parts in a machine of this character by means of which ,a pipe orconduit may be provided witha cylindrical reinforcement constructed of wire and having suflicient rigidity to retain its cylindrical form so as not to collapse or sag under ordinary work- One of the obf cts of the present invention .is to provide an im roved machine which can be simply and urably constructed, which will be eflicient in o eration, and the product of which wil be' inexpensive and serviceable. 'Another object is to provide amachine of improved construction whereby a cylindrical reinforcement of this character canbe con-- structed of various strands of wire su rimposed upon each other without inter acing.

Other and further objects will appear in the specification and pointed out in the a pended claims, referencebeing had to t e accompanying drawings which exemplify .-my invention n a preferred embodiment,

v and .in which,

'drum end of machine;

Figure 1 is a side elevation of the machine;

Fig, 2,.a' plafiview of the same;

3,- an. and elevation of the'winding Fig, 4, an endclevation of the gear, wheel end of machine;-

Fig. 5', a sectional view' of a portion of the small drum forwinding rein small pipes;

reference are used to denote similar or corres onding parts whereverthey occur. 1n Fig.1 of the draw' "and n the subsequent figures, :1 is a oundation frame Specification of Letters Iatent.

orcemefit for Fig. 6, a spring pin device for thedrumr Patented July 3, 1917 Application Med January 18,1914. Serial Ho. B1l,870.

preferably made of stron rolled iron joists.

and suitably bedded. pon this foundation frame two fixed gear standards 2 anrl3 are securely bolted. -These gear standards support the main drivin shaft 4, the end of which projects beyon the standard 2 to form the drum spindle 5.

Upon the main driving shaft the main ar wheel 6 is securely keyed or otherwise astened, and at the outer end of the shaft the'interchangeable speed wheels 7, 8 and 9, 10 are arranged, the lastnamed wheels being mounted on an auxiliaryv shaft 11 placed immediately below and in alineinent with the main driving shaft upon' which said auxiliary shaft a-chain wheel 12 is mounted. The two bottom wheels 9 and 10 and the chain wheel 12 rotate in unison, but the wheels 7 and 8 onthe main shaft depend upon a sliding key 13 for their rotation, the key being embedded in the main shaft and" being capable of engagement with either of the wheels 7 or 8 by the operation of the hinged lever 14 whichis'fitted with a controlling handle 15.

Belt wheels are Shown at 16 and are se cured to the belt shaft 17, in connection with which a clutch gear 18 is arranged, the

.sliding portion of the clutch having .a

feather placed at 19 and a clutch handle or starting lever. 20 connected therewith. The

belt shaft is mounted upon frame brackets 21 which are cast upon the gear standards .held in position by the toggle lever 25. The

hinged standard is pivoted to the main frame at 26. V a r The cylindrical windingdrum is shown at c be understood more'particularlyon reference to28 in Fig. 3 of the drawings wherein. an open space is shown between the adjacent free edges, and is also illustrated in 1.

The drum, which is of sheet, meta is mounted upon spri springs being to collapse inward; but to 100 V 0 27, but is not a complete-cylinder, inasmuch \r a as its edges do not entirely meet. This will rings QQL-Iwhich are provided at each en the tendency ofthe these springs the arm brackets 30 are fastened and take an adjustable bearing upon the cones previously referred to, and by which means the springs may be extended to suit the desired diameter of the drum according to the pressure exerted by the cones,

as will be well understood.

A- series of holes are circun ferentially drilled through the ends of the drum, and through these holes the small pins 31 project. These pins are mounted upon the ends the intermediate guide wheels 38 also passes around the tension wheel 39. The slack of the chain may be adjusted by any simple form of tension gear, such as a screw and nut 40 or other convenient device.

Upon the frame of the machine I mount a traveling carriage 41 which is guided by the horizontal wheels 42 which are grooved to engage the upper flange of the foundation frame joists. v This frame is fitted with two chain wheels 43, and with a cbntrolling lever 44 which operates any simple form of clutch such as a. double wedge-shaped bar placed above the endless chain in such a position asto render it capable of engaging either run of the chain which travels above the wheels 43 in the opposite directions indicated by the adjacent arrows, (and capable also of disengagii'ig with both) so as to traverse the carriage either backward or forward in accordaiufc with the relative movements of the chain, or to allow it to remain stationary when disengaged, as will be well understood.

Upon the carriage l mount a grooved wheel 45 which serves as aguidefor the wire.reinforcement which is to be wound around the drum. The' wire reinforcement is illustrated in Fig. 7, the sequence of winding being as follows A strand of wire from any suitable feed su 'iply is passed under the guide wheel 45,

' and is fastened to one of the pins.31 upon the drum, the guide wheel having been placed opposite to one end of-the drum. By operating the starting lever 20 the machine is put in motion so that the drum commences to rotate. and simultaneously by means of the controlling lever 44 the car riage 41 is'causedto traverse along thefounar da-tion frame, being operated by the endless chain 37. By this means twowindings of the wire are effected, that is to say, a single winding is made equal to the length of the drum and then by means of-the lever 44 the carriage is actuated from the chain run nin in the opposite direction, and a return .is tiereby obtained.

For pipes of from four to five inches and up to twelve inches in diameter a spiral winding of about six inches pitch is used, as indicated at 4t) in Fig. 7, the pitch in"- creasing as the diameter increases. After this has been done longitudinal or brace loops, as indicated at 47, are carried under and over the prcviiwsly mentioned winding.

The longitudinal brace loops, of which there may be foile in number, can best be applied by hand, and for this purpose a length ofwire is taken and looped over one -of the pins at the center of the wire; the

two ends are then bent under the drum, crossed at the middle, an? from thence brought upward and on to he corresponding pin at the opposite end of "the drum. After this operation I lay longitudinal straight wires from end to end of the reinforcement. These wires are indicated at 48 in Fig. 7 and are g'gpplied by attaching the end of a piece'of "Wire to one of the pins, then bringing it horizontally to and around the corresponding pin on the opposite end ofthe drum, and returning it in the reverse direction after having coiled it at rightangles one-eighth of a circle, that is to say,

around the next pin on the same end. This backward and forward setting of the wire is continued until the whole circumferc tial of the drum has been covered by a length of wire longitudinally placed from pin to pin.

For pipes which require to be specially constructed for strength, I. provide a sup plelnental series of wires as shown at 49. In spacing these supplemental wires a length of wire is attached to an end pin, and. is stretched above the previously placed wires not quite in a horizontal line but slightly at anangle so as to pass around the next opposite pin in succession at the opposite end of the drum, and then back to the start-- ing end, but missing the next pin in succession as illustrated.

The final winding is achieved by means of the machine,'and is either a single or return winding of close pitch as indicated at 50, and'by substantially the same operation of the machine. as is described with regard to the first winding. These coils are preferably of about one inch pitch.

The variation in the winding pitch of the wires 46 and 50"-is obtained by a variation of thegspced traverse of the traveling carriage 41. which can be easily effected by moving the sliding key '13 by aid of the hinged lever 14 and the controlling handle 15 so as to make the toothed wheel .7 a driver while the wheel 8 becomes an idler, or alternatively to cause the wheel 8 to become a driver while the'whecl 7 runs free as an idler, thereby decreasing or increasing the speed of the wheels 9 and 10 'as may be requisite to afi'drd decreased or increased chain is continuously in motion, and is.

therefore always accessible for operating the traveling carriage 41 either backward or for varying the relative forward according to the position of the controlling lev'eri 44', which when laced in middle position doesnot enga e t e chain, and therefore leaves the trave ing carriage free. v a

It is to be understood that if the inter-' mediate wires 47, 48 and 49 are placed in position by hand, the first winding of the wire 46 and the final winding 50 may be regarded as a continuous or unbroken process, and as the first and last windings embrace the intermediate wires between the internal and external coils there is no necessity for the separate interlacing of the wires, which are contained between the first and last windings. This forms an important feature of the reinforcement.

All free ends of the intermediatewires are clipped off or turned. inward so as notto protrude, and the end of the'final winding is secured by any convenient method,,and is then clipped off; After this has been "donethetoggle lever-is made to release the standard 24,-. The sliding cone.23 is withdrawn, and the drum is released.

The removal of the pressure of the cones against the arm brackets 30 enables .the' spring Wheels 29 to slightly collapse, the drum,,thereby relieving the pressure of the coils of the reinforcement. Then this has been done the pin springs 32 are depressed so as'to carry the small projecting .pin be low the surface of the drum, thereby re leasing the various wires connected therewith and allowing them and the whole of the. reinforcement to be removed fromthe winding drum without hindrance -or obstruction. The constructional detail shown in Fig. 5 is for drums of small diameter, in which case the pins. are made to operate as bent springsthrough. holes .-or openings in the cones, thesprmg pins being fastened to a sliding collar '34 which is operated by the sliding push rod 35, whereby the pins are depressed to the'p'osition indicated by the dotted-line.

1. In a machine for manufacturing pipes and conduits, a main driving shaft, an auxiliary driving shaft driven thereby, means speeds of said?" shafts, a carriage movable a ong said machine, 'a flexible member operated by said auxiliary driving shaft and movable length-- wise along sa'idniachine, and means for successively connecting said carriage to said member and disconnectingit therefrom.

2. In a machine for manufacturing pipes and conduits, a driving shaft, an endless chain or belt connected with said driving shaft and comprising oppositely moving runs, a carriage reciprocable on said ma-' china, and means for separately connecting said carria e to said runs of theeudless chain or be t. i

In a machine for manufacturing pipes and conduits, a winding drum consisting of a continuous plate of sheet metal having a narrow space between its abutting edges, a spring ring for supporting the drum, fixed andsliding cones arranged upon a rotatably mounted shaft, and means interposed between said cones and the drum for slightly expanding or increasing the diameter of said drum.

4. In a-machine for manufacturing pipes and conduits, an expandible drum for winding reinforcement, a hinged standard for supporting the freeend of the drum spindle, and a hinged or to le lever for forcing and suppprting such st ndard in a vertical position and for operating against a sliding cone,

substantially as described andas illustrated. 5. In a machine for manufacturing pipes and conduits, the combination with a rotary drum, of a series of radially projecting pins yieldably mounted to normally protrude be yond the peripheral surface of the drunf or the attachment of reinforcing wires, Y a.

wire directing carriage reciprocable longitudinally of sald drum.

G. In a machine for manufacturing pipes and conduits, a rotary drum, a cone or cast ing arranged at the end of said-drum, a series of diagonally projecting pins arranged to operate within inclined openings in said cone or casting, and means for reciprocating said pins to extend and retract them with respect to the peripheral surface of said drum.

7. In a machine for manufacturingpipes and conduits,,'a drum, driving mechanism for imparting motion to the drum, said mechanismcom'prising a main driving shaft having interchangeable speed wheels mountdo i ed thereon, an auxiliary shaft in parallel alinement therewith having interchangeable speed wheels thereon, a belt shaft geared to ing and. stopping the machine. a

, 8. In a machine for manufacturing pipes and condpits, a main drivingshaft, an aux iliary drlving shaft gearedthereto, means the main shaft, and a clutch gear for start- 'ufof for varying the relative speeds of said wheel and hating oppositely moving runs to reverse its direction of movement 9. he machine for manufacturing pipes shafts, a chain wheel mounted upon the auxihary shaft, 0. chain passing about said chain 5 and conduits, the combination of a series of chain wheels and an endless chain operated from the main shaft by intermediate gearing, which said chain is arranged to traverse horizontally underneath the winding drum, and an ordinary adjustment nut and bolt for adjusting the tension of such chain.

10. In a machine for ll'lllllllfLlCtlJllllg pipes and eomluits, a traveling chain, a traveling carriage having a wire guide thereon, a lever gear, and an engagement clutch whereby the carriage is caused to engage said traveling chain for imparting backward or forward motion from the chain to the carriage, said clutch being releasable'for enabling the car- 15 riage to remain stationary.

In testlmony whereof I have alhxed my signature in presenre of two witnesses.

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