US1583486A - Pipe-conveying mechanism - Google Patents

Description

May 4 1926.

A. E. PAIGE PIPE CONVEYING MECHANISM Filed Nov. 17, 1925 Qmmg awn/rm.-

Patented May 4, 1926.

UNITED STATES PATENT OFFICE.

ARTHUR E. PAIGE, OF PHILADELPHIA, PENNSYIIVANLA.

PIPE-CONVEYING MECHANISM.

Application and November 17, 1925. Serial No. 69,633.

To all whom it may concern:

Be it known that I, ARTHUR E. PAIGE, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a certain new and useful Improvement in Pipe-Conveying Mechanism, whereof the following is a specification, reference being had to the accompanying drawings.

.My invention may be employed with particular advantage in the manufacture of iron pipe in arotary mold which is relatively axially movable with respect to a trough, through which the molten metal is poured: for instance centrifugal casting mechanism of the generic ty )0 described in my copending application aerial No. 62,947 filed October 17, 1925, for Letters Patent of the United States, wherein the mold is mounted to 1'0- tate upon a truck which is arranged to re ciprocate upon a track. The purpose and effect of the present invention is to withdraw each, cast pipe from such a. mold and discharge it upon tracks leading, transversely to said mold tracks, to an annealing furnace or other receiving means. However, the casting ejecting device herein disclosed is the subject matter of my copending application Serial No. 82,674 filed January 21, 1926, for Letters Patent of the United States; the claims in this case being directed to the conveying mechanism which cooperates with said ejecting device to discharge the pipes laterally with respect to the axis of the mold.'

The form of my invention hereinafter described is particularly adapted for use in cooperative relation with a mold adapted to cast pipes which have a bell at one end larger than the diameter of the pipe throughout the remainder of its length and includes supports which are counterpoised to gravitate to position to support the castpipe but respectively pivoted, so that they may be temporarily tilted out of the path of the bell end of the pipe during the traverse of the mold to its position in which the pipe casting operation is completed; such tilting movement being conveniently effected by a roller carried by the mold truck and arranged to successively encounter and tilt said supports, out of the way of the mold and its truck.

As hereinafter described the axially movable mold carries the cast pipe, bell end forward, into engagement with a device, which, at the conclusion of the casting operation,

features of construction and arrangement.

hereinafter more definitely specified.

Fig. I is a fragmentary side view of a convenient form of apparatus embodying my invention, wherein the discharge tracks are sectioned on the line I, I in Fig. II.

Fig. II is a fragmentary transverse sec-v tional view of said apparatus taken on the line II, II in Fig. I. 4

In said figures; 9. track 1 is formed of a pair of parallel'rails, preferably inclined,

and at. an angle of'four degrees-to a horizontal plane. The truck frame 3 is provided with four supporting wheels tarranged to traverse s'aid track. Said truck frame is conveniently formed of wrought steel including two opposite longitudinally extending channels 7 connected by cross channels 9 respectively at the front and rear ends thereof. Said cross channels 9 each support two roller bearing brackets 12, which are all alike. 15 which are conveniently held stationary on said truck frame and support four mold bearing rollers 16 which are all alike. Said frame 3 and rollers 16 support the rotary mold 18 which has annular flanges T9 at its opposite ends engaging said rollers 16.

Said mold 18 is so constructed and arranged that the bell endpipe 26 may be rotarily cast therein and includes the tubular core 27 at the bell end of the mold, conveniently formed of a cementitious material carried b the circular plate 28 which is removably tted in the end of the mold in which it is detachably secured by a pair of diametrically opposite tapered pins 30, which are removed at the end of each casting operation.-

In order to prevent distortion of said mold 18; I provide means to subject it to the action, of a refrigerant, preferably Said brackets 12 support two shafts water, and conveniently by surrounding said mold with the tank 32 which is held stationary on said truck frame 3 in coaxial relation with said mold, by two frame brackets 33 each provided with a strap bolt 35 with nuts 36. Said tank 32 has the cold water inlet 37 at the bottom thereof and the hot water outlet 38 at the top thereof, respectively connected with a cold water supply under pressure, and with a drain. In order to permit rotation of said mold in said tank without leakage of the water; I provide each end thereof with rings of packing in a stuffing box 40. a v

The circulation of refrigerant through said tank 32 may be controlled by controlling the passage of water through either said inlet 37 or outlet 38; so that the mold is continuously maintained at the proper predetermined temperature duringthe casting operation.

Said mold 18 is continuously rotated during the casting operation, conveniently by means including an electric motor, driving the shaft 42 carrying the gear 43 engaging the gear 44, at the remote end of the mold as seen in Fig. II.

The molten metal. is directed into said mold by the pouring trough 47 which is maintained relatively stationary, while said mold 18is rotated and reciprocated with respect thereto. The movement of reciprocation of said mold may be convenientl effected by a screw thread on said sha t 42 engaging a nut 48 held stationary on said truck frame 3, as described at length in my copending application aforesaid. However, it is to be understood that said mold may be axially reciprocated upon said tracks 1 by any convenient means applied to said truck 3; the latter being gradually shifted to the right in Fig. I during each casting opera tion, and being returned to the position in which it is shown, at the left of Fig. I, before the initiation of the next succeeding casting operation.

A suitable pipe grappling device, for instance including the rotatable axial support 152 carrying the levers 153 and 154, connected by the links 155, is detachably supported in the standard bearing 156 (which is in rigid relation with said tracks 1 at the right hand end thereof) and is initially in inoperative position, with the lever 154 inclined. However, movement of said truck 3 with the mold 18 and east pipe 26 to the right in Fig. I brings theright hand end of the mold against said lever 154, erecting it and thus spreading said links into engagement with the core 27; While said support 152 is journaled in said bearing 156 between its collars 158 and 159, to temporarily hold said pipe 26 while the mold is being witlr drawn. therefrom, toward .the left in Fig. I, for instance, by reversal of rotation of said shaft 42 thus leaving the'cast pi 26' in engagement with said grappling (Ki rice as shown in Fig. I.

However, it is obvious that said pipe would fall of itsown weight when released from the mold, as it passes to the position a .162 which are adapted to be successively tilted to the rightin Fig. I, out of the way of the truck 3 and the apparatus carried by the latter, by means of the roller 163 which is mounted upon the right hand end of said truck. Said struts are respectively pivoted upon trunnions 164 which are journaled in bearing brackets 165 which are conveniently rigidly connected with the respective rails of the track 1; the latter being held in proper spaced relation by bolts 167 provided wi h nuts 168 upon opposite sides of the vertical webs of said rails, as best shown in Fig. II. Said struts 161 and 162 have respective counterweights 169 by which they are normally upturned to the position shown in Fig. I, whenever they are successively released, from their down tilted position, by the passage of said truck 3 toward the left in Fig. I. In such upturned position, said struts rest against the respective bo'lts 167. In order to insure that the weight of said pipe 26 shall cause said. struts 161 and 162 to remain upright. in contact with said bolts 167, during the discharging operation, instead of tilting to the right in Fig. I, away from said bolts 167, I incline the upper edges of said struts 161 and 162 to the left in Fig. I; in which position the center of gravity of each of said struts is upon the left hand side of its axis and said struts a in cooperative relation with the discharging track formed of two parallel rails 170 which are rigidly supported in any convenient manner. and are preferably downwardly inclined away from said. struts and toward an annealing furnace 171 or other means for receiving said pipes 26. Each pipe'26 is normally detained in coaxial relation with said mold 18 in depressions 173 in the tops of said struts from which each pipe may rolled aside by manipulation of said lever 154. Said grappling support 152 being then released from the bearing 156 may be released from said pipe 26 by returning said lever 154 to its initial position in the'suoport 156, and the core plate 28 and core 27 knocked loose from the pipe. the operation may be repeated as. above described.

Although I have illustrated my invention with reference to centrifugal casting mechanism of a specific form adapted for casting Thereupon,

, bell end pipe; it is to beunde'rstood that I do not desire to limit myself thereto; as

- other forms of molds may be employed in conjunction with the discharging apparatus above described; which is adapted to receive pipes from any suitable carrier.

Therefore, I do not desire to to the precise details of construction, arrangement and procedure herein set forth, In as it is obvious that various gmodifications may be made therein without departing from the essential features of'myinvention as described in theappendedclaims.

I claim: I

1'. The combination with means arranged to shift a bell end pipe axially; of pipe con-' veying mechanism, including a plurality of struts extending transversely to the axis of said 'pipe and independently pivoted upon axes transverse -to the pipe axis and respectively provided with counterbalance weights; whereby said struts are arranged to.

gravitate to upright position to support the pipe, but may be temporarily tilted out of the path of the pipe during its traverse to the axial position in which it is to be received upon said-struts; each of. said struts having a shallow depression adapted to re-- ceive andprevent accidental displacement 3 of the pipe; and stop means limiting the tilting movement of said struts to upright position; the upper ends of said struts be mg respectively extended beyond vertical planes intersecting their centers of gravity and toward said stop means whereby the weight of said pipe holds said struts against.

' said stop means. 2. The combination with means arranged to shift a pipe-axially; ofpipe conveying 40 mechanism, including a plurality of counterbalanced struts extending transversely to the axis of said pipe and independently plvoted upon 7 axes transverse to the pipe axis; whereby-said struts are arranged to gravitate t'o upright position to support the lpe, but may be temporarily tilted out o the path of the pipe during its traverse to the axial position in which it is to be received upon said struts; each of said struts having means adapted to receive and prevent accidental displacement of the pipe; and stop means'limlting the tilting movement of said struts to upright position; the upperends of said struts being respectively extended beyond vertical planes intersecting their centers of gravity and toward said stop means; whereby the weight of said pipe holds said struts against said stop means.

3. The combination with means arranged to shift a pipe axially; of pipe conveying mechanism, including a plurality of counterbalanced struts extending tr? nsversely to the axis of said pipe and independently pivoted upon axes transverse to the pipe axis;'.

limit myself whereby said struts arejarranged gravitate to upright position to support the nt but may be temporarily tilted out of the path of the pipe during its traverse to the axial position 1n which it is to be received upon said struts; each ofsaid struts having means adapted to receive and prevent. accidental displacement of the pipe; and stop 'means limiting the tilting movement of said struts to upright position. i '4. The combination with means arranged to shiftna -pipe, axially; of. pipe conveying mechanism,including a pivoted and counter abalanced strut extending transversely to the axis of said pipe; whereby said strut is arranged to gravitate to upright position to;

support the pipe, butmay be temporarily tilted out of the path of the pipe during its traverse to the axial position in which it is to be received upon said strut; said strut having a (shallow depression in .its top adapted to receive and prevent accidental displacement ,of the pipe; stop means limiting the tilting movement of said strut to a position in which it is overbalanoed against said stop means; whereby the weight of said pipe holds said strut against said stop means. 5."The coin'binati n with means arranged to shift a pipe axially of pipe conveying mechanism, including a pivoted and counterbalanced strut extending transversely to the axis of said pipe; whereby said strut is ar- 1 tiltedout of the path of the pipe during its traverse to the axial position in which it-is to be received upon said strut; said strut having means adapted to receive and prevent accidental displacement of the pipe;-

. stop means limiting the tilting movement of said strut to a position in which it is overbalanced against said stop means; whereby the weight of said pipe holds said strut against said stop means.

6. The combination with means arranged to shift a pipe axially; of pipe conveying mechanism, including'a pivoted and counterbalanced strut extending transversely to the axis of said pipe; whereby saidstrut is arranged to gravitate to uppight position to support the pipe, but maybe temporarily tilted out of the path of the pipe during its V traverse to the axial position in which it is to be received upon said strut; stop means limiting thetilting movement of said strut to a position in which it is overbalanoed against said stop means; whereby the weight 0 said pipe holds said strut against said this fourteenth day of Novembenm

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