US873023A

US873023A - Pipe-bending machine.

Info

Publication number: US873023A
Application number: US33422006A
Authority: US
Inventors: James Fillmore Cox
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-09-12
Filing date: 1906-09-12
Publication date: 1907-12-10
Anticipated expiration: 1924-12-10

Description

No. 873,023. PATENTE) DBC. 10, 1907. J. F. 00X.

PIPE BBNDING MACHINE. APPLICATION FILE. s212112. 1906.

3 SHEETS-SHEET l.

No. 873,623. -PATENTBD DEG. l0, 1907. 3.?. 00X. PIFHBBNBL'NG MACHINE.

APPLICATION FILED SEPT.12,1906.

mls/M705' y@ mezsjg'ffmor@ (als PATENTED DEC. l() 1907.

J. F. COX.

PIPE BENDING MAGHINE. APPLIOATION FILED SEPT. l2, 1906.

Q if,

3 SHEETS-SHEET 3.

' JAMES FILLMORE COX, F .TERSE7 CITY, NEW JERSEY.

PIPE-BENDING MACHINE Specification of Letters Patent.

Patented Dec. 10,1907.

Application filed September 12. 1906. Serial No. 334.220.

T o all whomr it may concern:

Be it known that I, JAMES FILLMORE Cox, a citizen of the United States, and residing at Jersey City, in the county of Hudson. and

. State of New Jersey, have invented certain new and useful improvements in Pipe-Bending Machines, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide an improved pipe bending machine which is simple in construction and operation and by means of which a pipe may be bent into segmental form without the use of an inner filling usually employed to prevent the changing of the cross sectional form of the bent portion of the pipe; and with this and. other objects in view the invention consists in a machine of the class speciiied constructed and operating as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accom.

panying drawing forms a part, in which the separate parts of my improvement are designatedl by suitable reference characters in each of the views, and in which F`gure l is a front side view of my improved pipe bending machine; Fig. 2 an end View thereof looking in the direction of the arrow of Fig. l Fig. 3 a partial horizonta section on the line of Fig. 2 Figa a par tial horizontal section on the line 4--4 of Fig. l Fig. 5 a partial vertical section on the line 5 5 of Fig. l and, Fig. 6 a partial vertical section on the line 6-6 of Fig. l.

ln the practice of my invention as shown in the drawing, l provide a main frame a having a top table (L2 provided at the right hand end with an extension a3, and said frame is provided with legs c4 connected by transverse end members c, and the extension a? of the table is also provided with a le or legs a, and the main frame c is provided at the front side thereof and at a predetermined distance below the table a2 with a horizontal plate member a7.

Mounted vertically in the main frame is a shaft l) having a sup ort or bearing in the frame member al, an said shaft passes4 vertically through the table a, and mounted on said shaft immediately above the table a2 is a circular bending block or wheel b3 having an annular groove ll, and the shaft t above the block or wheel b3 is threaded and provided with a nut b5. 'In the form of construction shown, that part of the shaft b on which the wheel or block b3 is mounted is angular in cross section as shown in Fig. 3, and they said wheel turns with said shaft, but said" block oi4 wheel may be secured to said shaft, so as to turn therewith, in any desired manner.

An arm c is also connected with the shaft b so as to turn therewith, and said arm in the normal position of the parts extends forwardly from said sha-ft, and is provided with a. longitudinal slot or opening c2, and mounted in said arm is a screw e3 provided at its forward end with a transverse head e4 having a handle c by which said screw may be turned in either direction. Mounted on' the screw c3, in the slot or opening e2 and extending above the arm c, is a die ci, the face of which, adj acent to the wheel or block b3 is provided with av horizontal groove c7 which corresponds with the groove l) in the wheel or block b3.

Mounted on the table a2 of the main frame and near the front edge thereof is a longitudinally movable slide d, andpivoted rearwardly of said slide as shown at d2 is a lever d3 which is also pivoted to the slide d at d4," and the connection of the slide d with the table a2 is preferably .made by means of a horizontal support d5 which is placed on said table and with which the slide d is connected by a tongue and groove connection as shown in Fig. 2, and connected with the rear side of the slide d is a die block d having a longitudinal segmental groove al7 in its rear face, which corresponds with the grooves el and b4 in thedie c6 and the wheel or block b3. The die block d is provided at one end with a transversely arranged arm d which is secured to the end of the slide d, and said die block d? is also connected with the slide d by a tongue and groove joint as shown, at d in Fig. 2. The main frame is also provided with a longitudinal `and vertically arranged hanger r1.8 through which the shaft l) passes, and secured. to,said shaft is a beveled gear Wheel e, and the hanger a8 at the right hand side of the shaft t is provided with a horizontal bearin a9 through which is passed a shaft e2 provide with a beveled gear wheel e3 which meshes with the gear Wheel e, and the shaft e2 is provided at its right hand endwith a worm gear wheel e provided with. an annular groove e5 in which the gear teeth of said wheel are the shaft l) is an arm q which is adapted to be adjusted on said -shaft to any desired position, and which operates in connection with.

the linger]17 ofthe cranlif. The arm g, in the forni of construction shown, is provided with an opening g2 through which the shalt b .passes and said arm is also provided with .lingerf of the crankf5 parallel jaws g3 through which is passed a bolt gAx by means el which the arm may. oe Securely clamped on said shalt, but said arm may be connected with said shalt in any desired way,

The main frame c is provided near the right hand end thereof with a vertically arranfred hanger support lt, and secured to the lower end thereotV is a plate It2 with which is connected a vertically movable slide t, the connection between the slide lt and the plate h2 being a tongue andr groove connection, and connected with the vertically movable slide h3, also hy means of a tongue and groove construction is a forwardly and bacliwardly movable support Irl which is pivoted its' rear end to the plate lt as shown .at lt, and said support 7L is adapted to swinfr in a vern tical plane. i

The support l# carries a horizontally arranged worin shaft 'i which ranges forwardly and bacliwardly 4of the machine, and is pro vided at its rear end with a belt or power wheel t, on which is placed a belt t which is driven from any suitable source ol power` or power mechanism. Placed at the right hand end of the a m f and the upwardly directed 'Enger or member f2 thereof is a spring j which serves to force said arm to the lel't, am`

arranged horizontally in. the bottom oll the main trame is a shalt or rod A: to which is pivoted a pedal lever le to the rear end ol which is pivoted a rod fc3 the upper end o t which is pivoted to the support '/r at kt.

,ai ln the normal position of the separate parts of this machine, the pin projects through the support lt and through the plate ha and vslide ,715* into the support h4, and Isaid support is held so thatthe shaft t will gear with the wheel e4. Il now the shaft l) be turned, the arm g will operate in connection with the and force the arinf to the right. ln this operation the piuf wil. he withdrawn from the-vertically movable slide lts and the support 7L, and said support will drop down as shown in llij. .5, and the worin shalt twill. be disconnectedll'rom the wheel c", and 'the movement ot the shalt b will he stopped. When itis desired to start the arenas shaft l), the pedal lever k2 is operated to raise the support It and the pin f3 is automatically forced into the position shown in Fig. l, and the shal t i is thrown into gear with the wheel c4.

ln Fig. 3, l have shown at m a pipe to be bent, and this pipe is placed longitudinally of the table (l2, and in the groove Z7 of the die blockl c and the end of said pipe to be connected is inserted .between the die c and the wheel or block tf. A mandrel a is also inserted into the pipe 'm so that 'the inner end thereof will be approximately inline with the longitudinal center ol the arm c as shownin l 3, and the screw c is turned so as to torce the die cj against the end of the pipe m and clamp the same between said die and wheel or block lf. operated so as to raise the support 71,4 of the shaft t and throw said shaft into gear with the wheel e", and the vertically arranged shaft L is turned. llhe extent of the rotation of the shaft l1 will depend on the position of the arm g, and the position ol the arm g will depend upon the len sth of the bend which it is desired to give to theend oli the pipe, and when said arm g strikes the finger f7 of the cranlif"l the slide or arm f" will be forced to the right against the operation of the springr and the pin f will he disconnected from t 1e l support at, and said support will drop down and discnnect the shaft t from the wheel et. lt will therefore be seen that the operation of the rotation of the shalt l) is automatically stopped at each vturn by the arm g, and the parts in connection with which said arm operates, and the machine is thrown into operation and the shaft I turned by means of the pedal lever ln the operation ol" this machine, the bending wheel or block Il and the arm c turn with the shalt l), 'and thev die e securely holds the pipe which is drawn from the mandrel m and turns with the wheel or block b3 as indicated by the dotted lines o in Fig. 3, and the end of the mandrel supports, the pipe at the bending point thereof, and thus prevents the shrinking); of the sides of the pipe, or a change in the transverse term thereof, the bending portion of the pipe retaining at'all .times its circular 'lorin in. transverse section. ln this way a pipe may be bont at its end, or at any point ol'- its length into'seg'mental or circular form, the radius of the bending; being iletermined by the diameter' of the block or wheel l5,

Although, l have shown and described particular means for driving my improved pipe beiuliirfe,y machine, or lor turnii'igr the shaft and. tor throwing said shaft into and out of meration itwill be apparent that the changes in and inodilications of the means herein shown and described for driving the shalt l) and :tor vthrowing said shalt into and out ot operation, may he made without deies parting from lthe Spirit ol: my invention or sacrificing its-advantages, and .l reserve the right to make all such alterations inand modifications of these features of 'the construction herein shown and described as fairly come within the scope of the invention.

Having inlly described my invention, what I claim as new and desire to secure by Letters Patent, is zl. In a machine of the class described the combination with a bending former and a vertically arranged shaft Afor actuating said iornier of a. horizontally arranged shaft geared in connection with the vertically arranged shaft and provided with a worm gear wheel', a support pivoted adjacent to the worin gear wheel, a worm shaft mounted in said support, and means Vfor operating seid support Aso as to throw the Worm shaft into and out ol connection with the worin wheel, substantialiy shown and described.

In a machine of the class described the combination with a bending 'ternir-,r and a vertically arranged shalt lor actuating said l'ormer ot a horixontally arranged shaft providedwith a worm gea-r wheel, a inm'abie support mounted adjacent to the Worin gear wheel, a worm sha lit mounted in said support and adapted to operate 1n connection -with the worm gear wheel, and devices 1n operaytive connection with the vertically arranged .tion 'with the Worin gear, substantially as' shown and described.

i?. ln a machine of the class described the combination with a bending former and a vertically arranged shaft for actuating said former of a horizontally arranged shaft provided with a Worin gear Wheel, a movable support inonnted adjacent to the W'orin gear wheel, a Worm shaftmounted in said support and adapted to operate in connection with the worin gear Wheel, devices in operative connection with the vertically arranged shaft and with said support for automatically throwing the worin shaft out et connection with the worin gear, and a pedal lever in connection with said support and whereby the Worm shaft may be thrown back into connec- 'tion with the Worin gear wheel, substantially as shown and described. e

In testimony that I claim the foregoing as my invention I have signed my naine in presence of the subscribing Witnesses this 10th day of September, 1906.

JAMES FILLMORE COX.

`Witnesses:

@LGA A. REnBErN, F. A. STEWART.