US933434A

US933434A - Pipe-casting machine.

Info

Publication number: US933434A
Application number: US37204507A
Authority: US
Inventors: John K Gunn
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-05-06
Filing date: 1907-05-06
Publication date: 1909-09-07
Anticipated expiration: 1926-09-07

Description

J. lK. GUNN.

PIPE GASTING MACHINE. APPLIoA'TIoN FILED MAY e', 1907.

v I4 S 4, TN. Ma. 9. wt.

ATTORNEYS J. K. GUNN.

PIPE CASTING MACHINE.

ArPLIoATIoN FILED MAY e, 19p?. Y

3 SHEETS-SHBET 2.

ATTORNEYS J'. K. GUNN.

PIPE CASTING MAOHINE.

Y APPLICATION FILED MAY 6, 1907.

Patented Sept. 7, 1909.

3 SHEETS-SHEET 3.

WITNESSES( ATTORNEYS To all whom it may concer/n:

einen srArEsrATENr OFFICE.

1 JOHN iz. GUNN, on U'rIcA, NEW YORK.

PIPE-CASTING MACHINE.

eaaasa.

Be it known that I, JOHN' K. GUNN, of

Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Pipe-Casting .Machines; and I do hereby declare that the following is a full, c1ear, `and exact description thereof, which will enable others, skilled inthe art to whichvit appertains to make and use the saine, reference being had to the accompanying drawings, and to the charac-` `ters of reference marked thereon, which form part of this specication.

The object of my presentinvention is. td provide an improved machine for casting pipe, which may be said to operate by continuous process. l Y,

Briey described the machine consists of an intermittently moving turn table carrying on its outer rim in an upright position the flasks. These Hasks are passed under a molding machine, Where the sand is intro` duced and formed to size,y and after being internally coated are passed into a drying oven having an induced draft through the mold. After passing through the oven the cores are set, thev metal poured, the flasks removed from theturn table, shook out and replaced thereon, when they again pass to the molding machine.`

Figure 1 shows a vertical 'section of the machine. Fig. 2 is a partial plan view in vwhich sections are broken out and shown in horizontal section to better illustrate the construction. Fi 3 'is .a partial vertical sectional view of the machine and a` flask on an enlarged scalefrom that employed in Figs. 1 and 2. Fig. 4 is a vertical section of aiiask and the rammer in connection with small portions of the machine. `Fig. 5 is a horizontal section on line vAw-B of Fig. 3. f

Referring to the reference letters and iigures in a more particular description of the device, 41 indicates a turn table or carrier turningy on a fixed pivot 2 in a suitable base or foundation and supported 'on a circular track `3 provided on a suitable base. or foundation by rollers 4f interposed betweeny said track 3 and an inverted circular track 5 provided on the underside of the turn table. The rollers 4 are maintainedin position by being mounted on the radial shaftsV 6, which are held together at their outer ends by Patented Sept. '7,11909.

spacing strip orband 7, and at their inner ends da bearing rotating disk 8.

yAround .the yperiphery the turn table is provided with a circular latform 9. This lplatform 4'mi' ht be carrie entirel over the turn table eam construction, ut bein practically useless otherwise than around the periphery is omitted. The turn table is provided ywith an elevated platform 10,

Iwhich is Asupported by posts or uprights 1l. `This platform 10 of course rotates withthe turn table, and is arranged substantially in the same plane as the fixed floor 12 surrounding the pit in which the machine is erected. The circular track 5 isprovidedon the outer side with a face of gear teeth 5, with which is adapted to mesh a pinion 13 for applying power to rotate the turn table. The diameter -of the platform 9 of 'the turn table is greater than'that of the elevated platform 10 thereof, and occupies the space directly below in a vertical line, the circular o ening or space between the ed e .of the oor 12 and the edge of the plat orm 10. The platform 9 of the turn table is provided with a series of. openings over which are set the flasks 15, 'so` that the openings in the turn table will register with the openings throu h the flask. At a suitable point on the (peripi ery -of the machine is erected the mol form- 'ing or ramming machine, indicated roughly by 16, the essential feature of which is the rammer 117. 'As various forms of mold forming or ramming machines may be employed,

details of this construction are omitted. On

yner suspended curved wall 18", the top or cover 18c and walls .inclosing the lower part -19 under the space between the walls 18a and 18". The peripheral edgeof the turn ltable 1 projects into the oven through a slotted opening at 20 between the suspended wall ,18h and the top of thel fixed wall 19a, and divides the. upper portion ofv thev oven from the lower portion 19 by thev circular platform 9 thereof.

For supplying heat or hot gases to the oven, there is provided a suitable number of in an independently 35 the position of the molding machm'e and and replacin f wash orinner coatin vments the n matically and, of

furnaces 21 which communicate withthe oven chamber through openings 21a at a point substantially at the bottom of the flasks., By means of a suitable suction blower or fan attached to fiue 22, which connects with the lowerfpart 19, a draft is induced throu h the furnaces, and the oven chamber, an `when fiasks are in position in the oven also downward through the flasks. At each end the oven 18`is provided with sliding gates or doors 25 and 26 adapted to close the inlet and outlet openings of the oven, exce t when temporarily opened to shift the asksinto an vout of the oven. After passing through the oventhere is a section of the turn table devoted to the work of settingthe cores S. Followin this is a section'devoted to removing the asks,lopening and shaking out section is in icatedgenerallyby lT and opposite this section theoor l2 will ber'prefi erably cut out -as indicated at U in order to facilitate the removal and replacing of the flasks.

y The fiasksl are of the ordinary longituopened tojdischarge the vcastingand the inclosingfsand. Thegtwo,... sections, however, 'arep'referably hinged together; `When replaced' n` the 'tur`n""`table the flasks Ilare returned to the molding 'or rammingmachine.

Provision will ordinarily be made.`=between the intake end' of/the oven for one or two flasks, as indicated at V, at which point the y i g may be applied to the mold.v In operation the turn table is intermittently moved to bring one of the iiasks ijn position under the molding machine when the mold will be made. When made the turn table will be moved ahead onev position bringing another fiask under themachine. At the time of these moveates, or doors 25 and 26 will be opened to et one liask vpass into the oven and one 'flask pass out from the oven. These doors .may be arranged to be operated autocourse, are arranged to slide 1n through the spaces between the flasks on the tur'n table, the flasks being suitably spaced to permit so doing. It will .be observed thatthe hot'gases directly from the most effective manner. Also that at the time the heated gases reach the point where they come 1n contact with the freshly lterruptingthe continuous operation of the and making ready the' head of the mold and pouring the metal. .This section is indicated on the drawing by them on the turn table. Thisy said openings and the flask extensions theremolded sand with its wash or inner coating they have lost a part of their heat to the flask body.' The combined heat and circulation serve to rapidly dry the molds without injury to the molds or their inner coatings, and the fact that provision is made in .the length of the oven for receiving'at one time a considerable number of flasks affords suflicient time to dry the 'mold without inmachine.

It isv evident that numerous changes and modifications may be made in the construction Without departing from the spirit of my invention.

so What I claim as new and desire to sel cure by Letters Patent is:

1. In a pipe casting machine, the combination of an oven adapted to receive a number o f tubular liasks in upright position over lopenings in the bottom thereof, a furnace lhavin its combustion chamber opening into the x(lower portion of the oven, and means for exhausting the oven through of tothe upper part of the oven, substantially as set forth.

2. In a casting machine, an oven through which the flasks are passed y said carrier, means for supplying heat to the oven, and means for inducing a draft from said oven to the exterior of the flasks and thence through the interior of the molds therein, substantially as set forth.

3. The combination in a machine of the character described of a flask carrier adapted to carry tubular flasks in upright position, a molding machine arranged adjacent to the carrier and adapted to operate in the flasks mounted thereon, and an oven through which the flasks are passed by the carrier and means for inducing a draft through the liasks while. in the oven, substantially as set foith.

4. The combination in a machine of the character described of a flask carrier adapted to carry tubular flasks in an upright posia fiask carrier,

tion, a molding machine arranged adjacent to the carrier and adapted to operate on the Vflasks mounted thereon, an oven through which the flasks are passed on the carrier adapted to receive a plurality of flasks and means for inducing a downward draft out of the oven through a series of the lflasks in the oven', substantially as set forth.

5. The combination in a casting machine of-a flask carrier, a molding machine arranged adjacent to the carrier, a drying oven through which the liasks are passed on the carrier, and means foiheating the oven and inducing a draft through the fiasks in the oven, substantially as set forth.

6. The combination in a continuous process pipe casting machine of a flask carrier, a`molding machine adjacent towhich the carrier passes, and an oven through which the flasks are passed, and means for ventilatg the oven through the flasks, substantially y as set forth.

7 In a pipe casting machine, the combination of an oven adapted to receive a number of tubular flasks in an upright position, a carrier supporting the flasks, a furnace deliverin heated gasesinto the oven adjacent tothe iottom, an exhaust flue `in communication with the lower ends of the flasks and means for inducing a draft from the furnace into the oven and exhausting the oven by a downward draft through the flasks and said exhaust flue, substantially as set forth.

8. The combination in a continuous procyess pipe casting machine of a flask carrier havmg a 4circular perforated platform on which thev flasks` stand in upright position, an oven through which theplatform passes dividing the same into upper and lower chambers, means for supplying heated gases to the upgr chamber, and means for withdrawing t e gases from the lower chamber, substantially as set forth.

9. The combination in a continuous proc` ess pipe casting machine of a flask carrier adaptedv to carry flasks in upright position' in a circular row and located in a pit in such manner as to provide for the flasks projecting above the-surface surrounding the pit, an upper carrier platform' occupying the yspace within the circle of the row of flasks and located substantially in the. plane of the surrounding surfaceof the pit, substantially as set forth.

10.. The combination in acontinuous process .pipe'casting machine" of a flask carrier having a circular platform perforated at suitable intervals to receive the flasks standing on and over said perforations, and a curved o ven receiving a section of the circular platform, doors at the ends of the oven arranged to pass across the platform and between the flasks arranged thereon, and means for heating the oven, substantially as set forth 11. In a pipe casting machine, the combination of an oven adapted to receive a-number of tubular flasks 1n upright position, a carrier passing the flasks through the oven, a furnace delivering heated gases into the oven adjacent to one end of the flask, and means for applying aV suction to the ends of the flasks nextthe furnace to induce a draft from the furnace into the oven and exhausting the oven through the flasks, substantially .as set forth.

12. In a pipe casting machine, the combination of an oven adapted to receive a number of tubular flasks in upright position, a carrier platform providing a bottom for the oven and having openings over which the flasks are placed, a furnace delivering gases into the bottom of the oven, means for ex-