US1100079A - Lowering-device regulator for sewer-pipe presses. - Google Patents

Description

J. F. KEENAN.

LOWERING DEVICE REGULATOR FOR SEWER PIPE PRESSES.

APPLICATION FILED APB.30, 1913.

Patented June 16, 1914.

IN VENTOR.

A TTOR N E Y.

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UNITED STATES PATENT OFFICE.

JOHN F. KEENAN, OF TAYLOR, WASHINGTON, ASSIGNOR, TO DENNY-BENTON CLAY AND COAL 00., OF SEATTLE, WASHINGTON; A CORPORATION OF WASHINGTON.

LOWERING-DEVICE REGULATOR FOB SEWER PIPE PRESSES.

To all whom it may concern Be it known that 1, JOHN F. KEENAN, a citizen of the United States, residing at Taylor, in the county of King and State of Washington, have invented certain new and useful Improvements in Lowering-Device Regulators for Sewer-Pipe Presses, of which the following is a specification.

This invention relatesto the manufacture of sewer-pipe.

The object of the invention is the provision of improved devices which are employed in regulating the action of the forming-board when lowering a pipe from the mold into position to be deposited upon a carriage for removal to the pipe turning works.

The invention is illustrated in the accompanying drawings, wherein- Figure 1 is a view in vertical longitudinal section of my invention applied to pipelowering devices. Fig. 2 is a horizontal section through 22 of Fig. 1. Fig. 3 is a transverse section through 3-3 of Figs. 1 and 2.

'Referring to the drawings, the numeral 5 designates a mold disposed at a distance above the floor 6 of a factory and 7 is a forming-board, so called, which is secured to the lower end of the mold when the pipe is being formed in the latter by means of lugs 35 provided on said board by hooks 8 depending from the mold. The formingboard'is supported upon the upper end of a piston-rod 9 of a cylinder 10 which is operated by a fluid under pressure and con trolled by suitable valves (not shown) for regulating the raising and lowering of the forming-board.

In the process of manufacturing pipe a portion of a length is protruded from the lower end of the mold upon the rccedence of the forming-board while the plastic material within the mold is subjected to pressure. The pressure acting on the material is then removed and the forming-board is withdrawn from the pipe through the agency of the power cylinder 10 to allow of the insertion of a socket-board 11 into the hub of the pipe.- This'being accomplished, the forming-board is raised by the power cylinder against the underside of the socketboard and upon pressure being again applied to the material the pipe containing the socket-board 1S lowered for a distance Specification of Letters Patent.

Application filed April 30, 1913.

Patented June 16, 1914.

Serial No. 764,544.

through the office of the cylinder. The corn joint downward movement of the forming board and pipe is then interrupted to enable the pipe to be cut to length, whereupon the pipe is lowered by correspondingly lowerin the forming-board until the socket-boar has been lowered into position, whereat the forwardly protruding prongs, such as 12, of bars 13 provided a on a carriage 14, are brought with the latter under the socketboard 11 at diametrically opposite sides of the forming-board. When thus presented the forming-board is further lowered to deposit the pipe-supporting socket-board upon the referred to carriage ron s. 'The aforesaid devices are or may e 0 usual or suitable construction.

According to the present invention, I provide means whereby the downward travel of the forming-board is arrested to first maintain the socket-board in position to have the carriage prongs introduced therebelow and when this is accomplished to allow the forming-board to be further lowered ndependently of the socket-board and the pipe which are then borne by the carriageprongs. To such ends, I rigidly secure at a predetermined height on the piston-rod 9, the collar 15 of a cross-head. At each side are apertured blocks 16 which travel on guide-bars 17, Fig. 3. The blocks 16, as shown in the view, are integrally connected with the collar 15 by arms 18.

19 represent companion or side members of a frame and are secured with each other by interposed spacing-pieces 20 and bolts 21 and 22. The bolt 21 which extends through corresponding ends of said side members is pivotally supported in bracket 23 and serves therewith as a hinge support for the frame. Said frame is disposed so that piston-rod 9 extends through the opening between said members, as best shown in Fig. 2, and whereby the members are adapted to be encountered by the crosshead arms 18 when the same is lowered with the piston-rod 't).

Under the free end of the frame I provide" therefor a tiltable prop. Said prop consists of an arm 25 havin'g axially alined trunnions 26 and 27 extending from its ends and journaled in bearing boxes 28. An arm 29 is rigidly connected to or formed with the trunnion 26 and is pivotally connected with an upright rod 30 having at its upper end a tread plate 31. A lever 32 fulcrumed at 33 its upright position to retain the frame inv its elevated position 'to be engaged by the cross-head to' arrest the iston-rod 9 in its downward travel when t e socket-board 11 is lowered upon the forming-board into position to permit theflcarriagerongs being brought under the socket-board? When this is accomplished, the operator presses down with his foot ,u on the tread-plate 31, resulting in the 0 30 pushing down the proparm 25, through the medium of arm 29, into the position in which it is indicated by broken lines A in Fig. 1. The frame is thus lowered into dotted line position B whereupon the piston-rod '9 is unsu' ported and descends to lower the formingoard 7 into the broken line position C in the view. By thus withdrawing the forming-board, the socket-board 11 and the supe osed pipe-P are deposited on the carriageare 13. The operator retains his foot on the tread-plate until the i e is conveyed away upon the carriage. pon releasing the tread-plate the weight 34 becomes operable subsequent to the raising of the piston-rod to effect the uptilting of the prop-arm 25 which, in turn, tilts the frame into position to arrest the piston-rod in the following downward movement of the same. What I claim, is

1. In devices of the character described, a piston-rod, power appliances for controlling the raislng and lowering ofthe pistonrod, an element rigidly connected to said piston-rod, a frame, and tiltable prop devices adapted to engage said element for stopping the downward movement of the piston-rod and means for actuating said prop whereby a subsequent lowering of the piston rod may be effected.

2. The combination with a piston-rod adapted to raise and lower a forming-board of a pipe-molding machine, of means adapt, ed to interrupt at a predetermined height the downward movement of the piston-rod,

means for automatically retaining the aforesaid means in operative position, and devices under the control of the operator for rendering the second named means temporarily inoperative.

3. The combination with the hoisting and lowering devices of a forming-board for a pipe-molding machine a frame, a prop for said frame, means for maintaining said prop in position to hold the frame in position to arrest said devices at a redetermined elevation, and foot-actuated evicesaetin in opposition to said means whereby sai prop is rendered inoperative to retain the frame in osition to stop said devices,

4. In evices of the class described, the combination with a pipe mold, a socketboard for a i pe, a carriage, a formingboard upon w 10h the socket-board is supported when lowering a pipe thereupon from said mold, a power controlled pistonrod supporting the formin -board, positive means serving to arrest the ownward movement of the piston-rdd wherebythe socketupon said carriage, and devices under the control of the operator whereby the aforeboard is stopped in position to be received said means are rendered temporarily inopv downward movements of the piston-rod and said boards to hold the socket-board in posi-- tion to be deposited upon said carria c, said devices being also adapted to be in uenced by the operator to disengage the same from said element to allow the further lowering of the piston-rod to deposit the socket-board on the carria e. V

Signed at cattle Wash., this 18th day oi April, 1913.

JOHN F. KEENAN.

Witnesses:

v Pmnnn BARNES,

E. Paraason.

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