US2278353A - Rod straightener - Google Patents

Description

March 31, 1942. v

c. A. JOHNSON ROD STRAIGHTENER Filed March 27, 1941 2 Sheets-Sheet 1 Inventor iari'e 4 (fa/7 :44

Attorney March 31, 1942. 3, A. JOHNSON 2,278,353

ROD STRAIGHTENER Filed March 27, 1941 2 Sheets-Sheet 2 A ttomeys Patented Mar. 31, 1942 a I UNI TED STATES: PAT QFFI EE RODSTRAIGHTENER- Charlie A; Johnson, Dutton, Mont. Application March 27, 1941,. Serial No; 385,533,

' admins. (01. 1537-48) My invention relates to improvements inmeans for straightening metal rods; shafts; and similar elements of farm machinery and'the. like; with-e out disassembling the machinery; and the pri"- mary object of my inventioni'sto providesimple;

ambient, and inexpensive-means, of this character.

Other important objects and advantagesof-my invention will appear'in the followingdescription and the appended drawings,- wherein for ill-us trative purposes, a-preferred embodiment of'my invention is shown.

In the drawings:

Figure 1 is a general fragmentary elevational view of a rod weeder showing the device of the invention applied to straighten one of the rods thereof.

Figure 2 is a top plan view of the device showing a portion of a rod therein.

Figure 3 is an enlarged end elevational view of the device partly broken away to disclose the adjustment slot.

Figure 4 is an enlarged fragmentary vertical sectional view taken through the pressure block.

Figure 5 is a fragmentary view similar to Figure 3 but showing adaptation of the device for straightening a square rather than a round rod or shaft.

Figure 6 is a perspective view of one of the square rod adapters for use with the device.

Referring in detail to the drawings, the device as a whole is designated 5 and consists of a pair of elongated parallel angle forms 6 and ,1, respectively, which are spaced and connected by base plates 8 and 9, respectively, engaging the bottom of the horizontal flanges of the angle forms adjacent their opposite ends. The horizontal flange of the angle form 6 is riveted at l0 and II to the corresponding base plates 8 and 9, while the horizontal flange of the angle form 1 is slidably mounted on the base plates, the opposite ends of the horizontal flange of the angle form 1 having clamping bolts [2 and I3, respectively, depending therefrom through transversely elongated slots l4 and I5, respectively, formed in the corresponding base plates. This arrangement permits adjusting and locking the angle form 1 toward and away from the angle form 6 to accommodate rods or shafts of different diameters.

Rising along the outer side of the vertical flange of the angle form 6 near the middle thereof is a plate like standard 16 formed near its upper end with a pintle receiving hole or journal to receive the pintle on the adjacent end of the nut I1 whichshas its opposite: pintle iourn'aled in a similai hole in the upperhinged section 18 ofthestandard l9 whichis secured to the outer side of the-verticalflange of the adjustable angle form 1-. Rivets 20 and 2| havingheads'flush with. the inner. surfaces of the saidverticalflanges secure the standards 16 and-:19 in place.

The horizontaliaxis hinge.,22' securesvthe lower" en'dlof' the standard section l 3. to theupperend of the stationary: portion t9; Cotter keys-or the like 23lpass through the pintles24- of the nut l1- outside of the standards to assemble the nut and: the standards and mount the pressure screw 25 which threads through a diametrical bore in the nut I! and has on its upper end a turning eye 26 and on its lower end a pressure block 21. i

The lower end of the pressure screw has a reduced smooth round portion 28 having a smooth flange 29 on its lower end, the latter turning in the lower end of the bore 33 formed through the top of the rectangular body 3|, with a split locking washer 32 entering the bore 30 through a slot 33 over the flange 29 to lock the block 21 rotatably on the lower end of the pressure screw. The bottom of the block is formed with a wide longitudinal inverted V-shaped groove 34 to accept the top of the round rod or shaft 35 as in Figure 3 of the drawings or a narrow V-shaped groove 34' to accept the upper corner of the square rod 35. When operating upon a square rod a hairpin shaped adapter 36 is utilized with its legs 31 placed along opposite sides of the square rod in the space between the slanted sides of the rod and the surface of the base plates 8 and 9 to prevent turning or rocking of the square rod.

To operate the present device, as in straightening the round rod 35 on the weeder 38, the screw 25 is swung on the axis of the pintles 24 to an out of the way position from that shown and the angle forms 6 and 1 brought up on opposite sides of the bend in the rod 35 so that the base plates 8 and 9 are on opposite sides of the bend and are at the concave side of the bend. The screw is then swung toward vertical position to apply the pressure block 21 to the middle of the convexity of the bend, and the screw being properly turned to move toward the bend, is-further turned to put extreme pressure on the block 21 by turning the eye 26 with a suitable lever, until the bend in the rod 35 or 35' has been straightened out to the extent desired. The screw 25 is then backed ofi and when free is swung out of the way and the angle forms 8 and 9 removed from the straightened rod or shaft. Suflicient play is provided in the component parts of the device to accommodate lateral adjustment of the angle form 1 without disaligning the parts, the hinge 22 allowing for suflicient displacement of the hinged section l8 when a wide adjustment of the angle form I is made.

Removable pins 39 and 40, spaced on opposite sides of the pressure assembly and traversing the vertical flanges of the angle forms 6 and fl may be provided as rests for short lengths of rod or shaft to be. straightened.

Although I have shown and described herein a preferred embodiment of my invention, it is to be understood that I do not wish to limit the application of my invention thereto, except as re quired by the scope of the subjoined claims.

Having described the invention, what is claimed as new is:

1. A device for straightening bent rods and justable vertically under adjustment of said shaft and swingable in said space in opposite directions under swinging of said shaft, one of said bars being adjustable laterally to vary the width of said space, and one of the standards having a lower hinged section permitting such adjustment of said one bar.

2. A device for straightening bent rods and the like comprising a base including a pair of laterally spaced horizontal bars for accommodating a rod therebetween, a pair of opposed'standards arising from said base, a rocker member journaled at its ends in said standards to extend transversely of the bars and above the same, an upright screw shaft threaded downwardly through said member for endwise adjustment into and out of the space between said bars and for .swingingileng'thwise of said space under rocking the like comprising a base including apair of laterally spaced horizontal bars for acc0mmodating a rod vtherebetween, a pair of opposed standards arising from said base, a rocker member journaled at itsends in said standards to extend transversely of the bars and above the same, an upright screw shaft threaded down.- wardly throughsaid memberfor endwise adjustment into and out of the space between said bars and for swinging lengthwise of said space under rocking of said member, and a pressure block in which the lower end of the shaft is rotatably secured, said block slidably fitting between said' bars against turning whereby said block is adof said member, a pressure block in which the lower end of the shaft is rotatably secured, said block slidably fitting between said bars against turning whereby said block is adjustable verticala; ly under adjustment of said shaft and swingable in said :spaceinopposite directions under swinging of said shaft, one of said bars being adjustable laterally to vary the width of said 'spa ce and one of the standards having a lower hinged sectionpermitting such adjustment of said one bar, and a forked adapter-fitting lengthwise'in said space for. supporting a transversely square rod withone edge uppermost.

CHARLIE A, Johnson

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