USRE17732E - Pipe and tube sendee - Google Patents

Description

July-315, 1930. E-'"'- T Re. 17,732

' v PIPE AND TUBE BENDER Original Filled Dec. 6, i927 Reissued July15, 1930 I UNITED- STATES PATENT OFFICE WALTER ESTES HOLSCLAW AND HARRY ELSTON HOLSCLAW, OF EVANSVILLE, INDIANA PIPE AND TUBE IBENDER Original No. 1,687,210, dated October 9, 1928, Serial N0. 238,157, filed December 6, 1927. Application for reissue filed February 4, 1930. Serial No. 425,919.

As hereinafter described in detail, the complete machine or appliance comprises a body having a tube or pipe engaging hook, a handle attached to, or formed integral with the body which may be grasped by one of the hands of the operator,a bending sheave provided with gear teeth or a mutilated gear, a pinion journalled in the body and adapted to mesh with the aforesaid gear teeth or mutilated gear and having a handle which may be grasped by the remaining hand of the operator, and a bending plate secured to the sheave as, for instance, to a flat part thereof, which is provided with a hook adapted to engagelthe tube or pipe when the latter is located between the hook on the body and the sheave, whereby when the handle for the pinion is'turned in the proper direction, the bendingplate will, by its grip on the tube or pipe, in conjunction with the sheave, effect the desired bend. The machine is adapted to slightly bend a pipe or tube or to bend it to any desired angle or in any desired curve, according to the manipulation of the two handles of the machine.

In the accompanying drawings.

Figure 1 is aside elevation;

Fig. 2 is a side elevation showing how pipe or tube is bent by the appliance Fig. 3 is a plan view and Fig. 4 is a bottom view.

The body 1 is provided with a hook 2 and a handle 3, rigidly connected to, or integral with, said body. A depressed surface 1 may be provided'in the handle to receive the name and address of the manufacturer.

Mounted to turn in a bearing 9 on the body A headed pin 5, which is secured to and- 1, is the shaft 10 having a pinion 11 meshing with teeth 7 and provided with a handle 12.

Secured to the flattened part 8 by a machine screw 13 is a bending plate 14- having a hook15.

A piece of tube or pipe undergoing bending is shown at 16.

If desired, the inner surface of hook 15 may have teeth, or corrugations to better grip the tube orpipe 16.

Having turned the handle 12 to position the hook 15 opposite the groove in sheave 6, the tube or pipe 16 is passed through the hook 2 and engaged with the hook 15. The operator grasps handles 3 and 12 and turns the latter to bend the pipe or tube into the curve or angle desired. The diameter of pinion .11 being small in relation to'that of sheave 6, the tube-or pipe is easily bent. As

made to accommodate the desired connections, etc., the bending device may simply be applied to the work as above set forth and the bending operations may then be performed merely by turningthe handle without holding the handle 3. This leaves one hand of the operator free, which is obviously a desirable condition.

VVhat-we claim is: V 1. The hereindescribed portable pipe and tube bender, comprising a body having a pipeengaging hook at one end and a handle at its other end to enable said bender to be held by the operator, a sheave having a grooved edge and journalled to the body, said sheave being provided with gear teeth, said sheave and hook lying in substantially the same plane, an elongated bending plate attached to the sheave and lying in the plane thereof, said plate having a hooked end projecting over the grooved edge of the sheave and adapted to grip the pipe or tube tobe bent, the firstnamed hook serving as an abutment for the pipe or tube, a shaft mounted on the body and provided with a I pinion which meshes with the gear teeth of the sheave, and a handle whereby said shaft may be turned.

2. A device for bending pipes and the like,

, comprising a body member, a wheel rotatably mounted on said body member and having a peripheral groove therein for forming the desired bends in the work and also having gear teeth formed integrally around a portion of its periphery and lying in parton each side of themedial plane-of said groove, a

pinion rotatably mounted on said body member and having itsaxis fixed with respect to said body member and its teeth meshing with the gear teeth of said wheel, and means for imparting rotation to saidpinion.

3. A device for bending pipes and the like, comprising a body member, a wheel rotatably mounted on saidbody member and having a peripheral groove therein for forming the desired bends in the Work and-also having gearteeth formed integrally. around, a portion of its periphery andlsubstantially inthe plane of said. groove, a, pinion rotatably mounted on saidbod y member and having its teeth meshing with the gear teeth of said wheel, a handle for imparting rotationto said pinion, and guidmg means on said body mem ber'for engaging the work,tlie entire device being constructed as a readilyportable hand tool requlringno fixed support, andsaid guiding means cooperatlng w ththe work when the latter isfizied in position so thatthede;

vice maybe operated Without any support other than that afforded by the work itself. 4. A device for bending pipes and-the like,

, comprising a body member, a wheel rotatably mounted on said body member and having a perlpheral groove therein for-forming the I desiredbends in thework, meansfor effecting relative rotation between said wheel and said body member, and guiding means on said body member for engaging the work, the en tire device being constructed as a readily portable hand tool requiringjno fixed sup port, and said guiding means cooperating with the work when the latter is fiXedin position'so that the device may be operatedwithout any support other'than'thataffordedby the work itself.

I peripheral groove therein for forming the des red bends n thework, means for effecting" 5 A device for bending pipes and, thelike, Comprising a body member, a wheel rotatably mounted on saidbody member and having a relative rotation'bet-ween said Wheel and said I body member, guiding means on said body a member forengagingthe work, and a handle on said body member for carrying-and sup-' porting the device, the entire; device a constructed as a. readily portable hand tool I I requiring nosupport in operation? other than that of the hand of the operator'onsaidhalr dle, and said guiding means cooperating with the work when the latteris fixed in position so that the device may be operated without any support other than'that afforded by the work itself.

6. A device for bending pipes and the like,

comprising a wheel having a "peripheral groove therein for forming the desired bends in "the Work and having a portion thereof cut away to leave a flat surface extending along a chord of the periphery of the Wheel, and means for holding the work in desired relation to said peripheral groove, comprising a -hooked member pivotally mounted on said wheel; p a

7. A device for bending pipes and the like, comprising a wheel having a peripheral groove therein for forming the desired bends in the work, and a hooked-member.pivotalily flat surface for movement transversely of the mounted on said wheel for movement into and out vef engagement with the work to hold the "latter in desired relation to the said peripheral groove in said wheel during operation of the device, such movement taking place only said Wheel.

in, a planetransverse to that of 8.. A device for bending pipes and the like, i i

, comprising" a body member, a Wheel pivotally mounted :on saidbody member and having a peripheral groove therein for formingfthe desired bends in the worln rotatable means coacting directly between said wheel and said body member for eflecting relative rotation therebetween, and a [grooved abutment formed integrally with said bodymember, for

guiding the work in desired relation to said .19. :A device for bending pipes andthe like,'

comprising a body member,a Wheel.pivotally mounted on said body member and having a peripheral groove of substantially semicircular cross-section therein for forming the desired bends in the work, rotatable means coasting directly between said wheel and said. body member for efi'ecting relative rotation therebetween, and an abutment formed intes grally with said body member with one end thereof lying in substantially tangential relation to saidwheel and having a substantially semi-cylindrical groove therein with its cross-section: complementaryv to that of the peripheral groove in said wheel at the place of tangencyi of: said abutment and 'wheel; said abutment guiding the work in desired relation to said wheel.

'- 10. A device for bendingpipes and the like, comprising a body member,. a wheel p'ivotally mounted on said body member and I having aperipheral groove of substantially semi-circular cross-section therein for form-i 1ng the desired bends 1n the work, rotatable means coactingdirectly between said-wheel and said body member for effecting relative rotation therebetween, and an abutment on said body member with one end thereof lying in substantially tangential relation to said Wheel and having an elongated, substantially semi-cylindrical groove therein with its cross-section complementary to that of the peripheral groove in said Wheel at the place of tangency of said abutment and Wheel, said abutment guiding the Work in desired relation to said Wheel.

In witness whereof, We have hereunto su scribed our names.

WALTER ESTES HOLSCLAW. HARRY ELSTON HOLSCLAW.

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