US1610196A

US1610196A - Lead-pipe-bending device

Info

Publication number: US1610196A
Application number: US652842A
Authority: US
Inventors: Blaisdell Connie
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-07-20
Filing date: 1923-07-20
Publication date: 1926-12-07
Anticipated expiration: 1943-12-07

Description

LEAD PIPE BENDINGDEVICE OriginalFiled July 20. 1923 4 Lrmentor: Conme @(u' sdhzll,

Patented Dec. 7,1926.

' 7 00mm BLAIsnEf-L,'orniiivrro'nniymrnnf Application filed J'llly 2 0, 1923, serial No. s5 2,s42. I ltenewedNovember 2, 19251 My invention relates to-ardevice foribend- 'ing lead pipe and the like and particularly for forming sharp bends such as are formed in S traps and thelike'and for measuring" the angles or the amount of bend put into" the pipe] for producing'uniform results when a series ofpipes'are to bebent to the same extent.

Lead pipes are usually bent around pins 7 orposts and without any accurate. means of indicating just the extent ofthe bend and for the purpose of preventing flattening, the pipe is usually filled with sand, resin, or a coiled springbefore being bent, these nonflattening devices being removed after the bend is made. j

My invention relates to a framework upon 7 which the pipe may be supported by apair von its lower side to fit aroundthe pipe and or'saddles which are pivoted in position so that they will bend assmoothly and easily as the pipe bends vwith a follower 'which acts to forcethe'middle portion of the-pipe downward between its two supporting saddlesto formja" generally U-shaped or,V-.

shaped bend. The follower is forced down- 1 ward by a power screw engaginga nut conpivoted tie rods with means by which the 'nected withthe framefof the'm'achine by pipe supporting saddles may be closed together or drawn apart to bring the supportinopoints of'th'e pipe at .varying distances;

1 yfinventionfis illustrated in the accompanying drawings in which i a Figure 1 is a side elevation of the device and, s Fig. 2 is a plan looking down-onto the device.

Referring to the drawings,the-support:

ing frameworkis made up of .two sidebars l and 2. preferably made of fiat metal bars 1 having. a series of recesses 3 cut into the i lower edge of each bar and extending up.-

ward about half the width of the bar. Supporting the side bars at one end are uprights 4 secured to'the end of the barswith a wide foot flange lfor holding the bar in an upf the saddles assumes.

right position. A similar upright 6 sus- V 'tainsthe other end of the side bars with a 1 I broad bearing 6 similar to'thebearing l the two'side bars at one'end of theniachine' by mean'sof a pivot 10 which extends entiresaddles Sand 7. j g I V For this purpose, a follower 15 is recessed V pivot 10 brings the indicator into The saddle 8 is pivoted between yous recesses or notches 3 formedin'the side lyacross'th'e machine, passing, through the the lower end of two 'pairs of tie rods 13,

the upper ends of which are'pivoted to a nut 14 raised some distance above the ma.-

chine to enablerthe

tie rods

12 and 13 to be Y spread apart agreater or less distanceas' desired so that thevpivot 11 may catch in i one or the other of the recesses 3. Y The bend in the pipeis made'by forcing downward the central bending a loop in'the screw itself.

portion between; the p it is pivoted to'thelower end of an upright. I zpower screw 16. which passes through and @There is shownat the end of the bent'pip. section portion ofthe-spiral spring 18.

which isdesignedto hold the pipe round and to prevent it from collapsing.

Means are provided for indicating the angle made by the; bend of; thepipe, and as.

herein shown, a disk ao is pivoted on the end of the pivot 10' so as to revolve freely and be turned readily by hand. Pivotedon the end of the pivot 10 is a hand or pointer the disk 20 while the other or rear end is bent roundand secured to the saddle 8 by mean 'of a strap 22. 1 Thus, the turning of thesaddle' 8' on its the same position as the saddle 8. p Q i o By suitable divisions on. the disk 20, the disk will indicate the angle to which the saddle 8 and consequently the pipe resting in Bydividing the disk'into quadrants and l I I 'subedividing the quadrants with one of the squared lines of the circle turned to horizontal position, the number of degrees indi- 21, one enact-Winona sharpened to form a pointer which remains in contact with cated bythe pointeron the quadrant will indicate the angle formed by the lead pipe.

It will be seen that by the use of the varibarl, the Saddles? and :8 may be separated 7 or moved together according to the length of the bend desired to be made in the lead pipe. I

A bending device constructed as herein shown is of great use to plumbers and others having occasion to bend lead pipe f0r.vari ous purposes such' as traps, elbows, etc.

I claim p p r g V p 1. In a machinefor bending lead pipe and the like, the combination of a frame formed of a pair of side bars, supporting means for said sidebars, a pair of pipe supporting saddles pivoted between'said side barsand to the same, a nut above said side bars, tierods connecting said nut with pivotingpoints of saidsaddles, a follower for forcing the central portion of said pipe downward, a screw for actingon said follower to depress the same, a handle for said screw and an indicator for indicating the amount of the bend formed in the pipe.

2. Ina machine for bending lead pipe and the like, the combination of a frame formed of a-pair of side bars having a series of recesses formed in its lower edge, a support for said bars, "a pipe supporting saddle pivoted between said bars at one end, a second pipe supporting saddle having pivots engaging opposite slots in said bars, a follow er for resting on said pipe between said saddles, a nut above said bars, tie rods piv oted to said nut at their upper ends and to the pivotal points'of said'saddles at their lower ends, a power screw engaging said nut and said follower for forming the bend in the pipe.

*ooiiNIE millenn al.