US2655973A - Spring coiler - Google Patents

Description

Oct. 20, 1953 E HOELSCH 2,655,973

SPRING COILER Filed May 14, 1951 3 Sheets-Sheet l IE. 1 D G /10 l i G T Z1 L 44 fm2? "l/M1 i /vz liilll /4 00 il;

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oct. 2o, 1953 E. H. HOELSCH 2,655,973

SPRING COILER Filed May 14, 1951 3 Sheets-Sheet 2v SPRING COILER Filed May 14, 1951 5 sheets-sheet 5 Patented Oct. 20, A1953 v@surir'riae PATENT 'Betts Application-.Maylg 1951,=Serial N0. .226,212

quiredfora speciarpurpose. "Thespring -maybe a standard or special type, but "ineithe'r event there is some time required to obtain thespring. The cost of special types of springis considerable. It has been suggested to use small hand operated spring coilers for thepurpose of rnaking such springs. However, such coilers that are now available are expensive and difficult to 'set up'for different springs. nrnany instances itA is necessary to change arbors and other parts to 'make 'springs Vof different sizesl and types.

It is therefore an object of my inventionto vprovide ahandspring 'coil'er Vthat is inexpensive, easily' set Vup for Ydifferent sizes and types of spring, and in which 'the parts thereof 'need not be changed for different springs.

`These and other objects Will'be more apparent after referring to the following V'specification'and attached drawings, in which: Figure lvis a' top planfview'of 'the machine;

FigureZ isa'v fronti-elevation ofthe machine;

""Figure 3 'isv an enlarged side elevation looking `from the left 'of Figure 1;

Figure "Ll-isf an enlaimged fragmentary View "of a detail; l

lrigure'f is1=an enlarged' fragmentary rfront eie- 'vati'on;

' Referring more v'parti'oularly' to the drawings, the'freference vnurneraly 2'* represents- `the bodyvor -frameof the coiler. AApair-ofA spaced apartrea'r- 'ifWardly extending vvlugsid :and "I' are arranged on .the bodyl. vAlignedopenings*8and 'I0 are Vprofvided infthe lugs'd and B, respectively,and"are A-pro'videdwith 'bearingsfor receiving a rotatable vshaftl. One endof'the 'shaft' I2 extends'out- Y'virardly" fromthe` 'lug 4 andV has'a' han'dwheel 'I4 fastened to its outer end. YThe other end'of'the `shaft I2 extends through the lug @and has a -Worm IB fastened thereon. vA lug I8 'extends upwardly'on the body 2' at'the leftY hand end thereof as seen in"Figure l. An axial opening 'extendsv through Ythe lugv IB at right angles to the Yshaft I2 and is provided with bearings forreceiving a'rotatableshaftv 22. -A worm wheel 24 which fineshes WithWorm I6 -is mounted on the back end of shaft '22 and is held in place by 'means of set screw 25. A gear'26 is mounted on the shaft'22 v`between the lug I8 and Worm Wheel 24- and is `held in place by means of a set screw 21. A feedroll AjE-I'isinour'itedon the front end of' lshaft l22 for "rotation-therewith. Af pair of space'djapart lugs 30- and- 32- extend 'from' thefleft` side yof the body being fastenedtothe endthereof. The spring |01 bears against the body 2 and yoke |04. A lever I |2 is pivotally mounted on the body' 2 by means of a bolt 4 screwed into an opening |I6 in lug 6. One end of lever ||2 bears on yoke |04 and the other end has a pin I8 in engagement therewith. The pin I |6 is slidably mounted in an opening |20 in body 2 and its position is adjusted by means of an adjusting screw |22 threaded into an opening |24 in body 2. The spring |01 keeps the yoke |04 in engagement with the lever ||21 at all times.

As best shown in Figure 5, a coiling point |26 is received in an opening |28 of a holder |30 and held in place therein by means of a brass shoe |32 and a set screw |34 which are received in a threaded opening |36. The coiling point |26 has a groove |31 at each end thereof. The holder |30 has a shaft |36 which is held in place in an opening E40 in an arm |42 of a two-armed lever |44 by means of a set screw |46. As seen in Figure 2, the lever |44 has an opening |48 therein for receiving an eccentric bushing |50 which has a counterbored opening |52 therein for receiving a cap screw |54 which is screwed into a threaded opening in the body 2. The other arm |56 of the lever |44 extends downwardly and has a threaded opening |58 therein for receiving an adjustable stop screw |60. A threaded collar |62 is threaded on the screw |60. The end of the stop screw |60 abuts against a stop |64 which is mounted on a pin |66 for rotation therewith. The pin |66 extends through openings in spaced apart lugs |68 on the body 2 and through an opening in the stop |64 which is received in the space between the lugs. A set screw |10 holds the pin |66 in adjusted position.

An end former |12 is received in an opening |14 in the right hand end of body 2 and is held in place therein by means of a cap screw |16.

The operation of the device is as follows:

With the various parts positioned as shown in Figures and 6, a rod or wire W is inserted between the feed rolls 28 and 46 and the handwheel I4 is turned in a clockwise direction as shown in Figure 3 to feed the wire down through the groove 64 in the guide member 62. In case the wire slips, the stud 52 is turned by means of the knob 56 to increase the pressure between the feed rolls 28 and 46. The set screw |10 is loosened and the stop |64 permitted to drop to its lower position, thus permitting the coiling point |26 to drop away from coiling position. The adjusting screws 94 and |00 are loosened and the sleeve 18 and arbor 86 rotated about their axes to bring the guide 80 and pin 88 in the position shown in Figure 5, after which the screws 94 and |00 are tightened. The end of the wire is then bent around the pin 88 and the coiling point |26 is brought up into contact with the wire W. The stop |64 is then raised into the position shown in Figure 2 and fastened there by tightening set screw |10. Right hand pitch tool 12 is then positioned as shown in Figures 5 and 6 and held in this position by set screw |06. Rotation of handwheel |4 is then continued, thus causing the wire W to coil continuously about pin 88. When the spring is completed the coiling point |26 is dropped in the manner described above. Continued rotation of handwheel I4 feeds the spring and Wire W downwardly without further coiling after which the spring is cut off and the end thereof formed in the desired manner on the end former |12. 'I'he machine is then ready for another operation.

When it is desired to increase the diameter of the spring, the screw |60 is threaded outwardly, thus permitting the lever |44 to rotate in a counterclockwise direction. To decrease the diameter the screw is threaded inwardly. This operation may be performed during feeding of the wire W to make a spring of varying diameter.

The pitch of the same or dilferent springs may be varied by turning screw |22, thus moving the pitch tool 12 inwardly or outwardly.

To make a left hand spring the pitch tool 12 is moved to a vertical position and the left hand pitch tool 14 is positioned as shown in broken lines in Figure 5. The positions of guide and pin 88 are also reversed with the guide 80 being to the right and the pin 88 to the left of the guide groove 64.

While one embodiment of my invention has been shown and described, it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

l. A coiler for making a spring from awire cornprising a frame, a coiling point mounted on said frame, said coiling point having a groove therein. means for feeding said wire into said groove, said frame having a hole therein adjacent the coiling point, an arbor sleeve in said hole, a guide portion on said arbor sleeve having an edge thereof in substantial alignment with the groove in said coiling point, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the edge of said guide portion a distance slightly greater than the diameter of said wire, and a pitch tool mounted on said frame with a portion thereof adjacent said arbor pin.

2. A coiler for making a spring from a wire comprising a frame, a coiling point mounted on said frame, said coiling point having a groove thereinI means for feeding Said wire into said groove, said frame having a hole therein adjacent the coiling point, an arbor sleeve in said hole, a guide portion on said arbor sleeve having an edge thereof in substantial alignment with the groove in said coiling point, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the edge of said guide portion a distance slightly greater than the diameter of said wire, a pitch tool slidably mounted in said frame with its axis substantially parallel to the axis of said sleeve, means on said pitch tool extending toward said pin and terminating adjacent thereto, means for adjusting the axial position of said pitch tool, and means for holding the pitch tool in adjusted position.

3. A coller for making a spring from a wire comprising a frame, a coiling point mounted on said frame, said coiling point having a groove therein, a pair of feed rolls for feeding said wire toward said coiling point, means for rotating said feed rolls, a guide extending substantially at right angles to the axes of said rolls, said guide having a groove therein aligned `with the groove in the coiling point, means for mounting said coiling point for movement toward and away from said guide, said frame having a hole therein adjacent the coiling point, an arbor sleeve in said hole, a guide portion on said arbor sleeve having an edge thereof in substantial alignment With the groove in said coiling point, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the edge of said guide portion a distance slightly greater than the diameter of said wire, and a pitch tool mounted on said frame with a portion thereof adjacent said arbor pin.

4. A coiler for making a spring from a wire comprising a frame, a coiling point mounted on said frame, said coiling point having a groove therein, a pair of feed rolls for feeding said wire toward said coiling point, means for rotating said feed rolls, a guide extending substantially at right angles to the axes of said rolls, said guide having a groove therein aligned with the groove in the coiling pointy means for mounting said coiling point for movement toward and away from said guide, said frame having a hole therein adjacent the coiling point, an arbor sleeve in said hole, a guide portion on said arbor sleeve having an edge thereof in substantial alignment with the groove in said coiling point, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the edge of said guide portion a distance slightly greater than the diameter of said wire, a pitch tool slidably mounted in said frame with its axis substantially parallel to the axis of said sleeve, means on said pitch tool extending toward said pin and terminating adjacent thereto, means for adjusting the axial position of said pitch tool, and means for holding the pitch tool in adjusted position.

5. A coiler for making a spring from wire comprising a frame, a feed roll rotatably mounted on said frame, a pressure arm pivotally mounted on said frame for movement to and from said feed roll, a second feed roll mounted on said pressure arm adjacent said first feed roll, resilient means for holding said second feed roll in adjusted position adjacent the first feed roll, at least one of said rolls having a groove therein for receiving said wire, means for rotating said feed rolls, a guide extending substantially at right angles to the `axes of said rolls, said guide having a groove therein aligned with the groove in the feed roll, a coiling point mounted on said frame and having a groove therein in substantially the same plane as the groove in said guide but substantially at right angles thereto, means for mounting said coiling point for movement toward and away from said guide, said frame having a hole therein adjacent the coiling point, an arbor sleeve in said hole, a guide portion on said arbor sleeve having an edge thereof in substantial alignment with the groove in said coiling point, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the edge of said guide portion a distance slightly greater than the diameter of said wire, and a pitch tool mounted on said frame with a portion thereof adjacent said arbor pm.

6. A coiler for making a spring from a wire comprising a frame, a feed roll rotatably mounted on said frame, a pressure arm pivotally mounted on said frame for movement to and from said feed rolly a second feed roll mounted on said pressure arm adjacent said first feed roll, resilient means for holding said second feed roll in adjusted position adjacent the first feed roll, at least one of said rolls having a groove therein for receiving said wire, means for rotating said feed rolls, a guide extending substantially at right angles to the axes of said rolls, said guide having a groove therein aligned with the groove in the feed roll, a coiling point mounted on said frame and having a groove therein in substantially the same plane as the groove in said guide but substantially at right angles thereto, means for mounting said coiling point for movement toward and away from said guide, said frame having a holeV therein adjacent the coiling point, an arbor sleeve in said hole, a guide portion on said arbor sleeve having an edge thereof in substantial alignment with the groove in said coiling point, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the edge of said guide portion a distance slightly greater than the diameter of said wire, a pitch tool slidably mounted in said frame with its axis substantially parallel to the axis of said sleeve, means en said pitch tool extending toward said pin and terminating adjacent thereto, means for adjusting the axial position of said pitch tool and -means for holding the pitch tool in adjusted position.

7. A coiler for making a spring from a wire comprising a frame, a feed roll rotatably mounted on said frame, a pressure arm pivotally mounted on said frame for movement to and from said feed roll, a second feed roll mounted on said pressure arm adjacent said first feed roll, resilient means for holding said second feed roll in adjusted position adjacent the first feed roll, at least one of said rolls having a groove therein for receiving said wire, means for rotating said feed rolls, a guide extending substantially at right angles to the axes of said rolls, said guide having a groove therein aligned with the groove in the feed roll, a coiling point mounted on said frame and having a groove therein in substantially the same plane as the groove in said guide but substantially at right angles thereto, means for mounting said coiling point for movement toward and away from said guide, said frame having a counterbored hole therein substantially parallel to the axes of the rolls, the counterbored portion of the hole being adjacent the coiling point, an arbor sleeve in said counterbored portion, a guide portion on said arbor sleeve having an edge thereof in substantial alignment with the groove in said guide, said sleeve having an axial hole therein, an arbor mounted in said axial hole, a pin mounted eccentrically on the outer end of said arbor and spaced from the guide portion of said arbor sleeve a distance greater than the diameter of the wire, a pitch tool slidably mounted in said frame with its axis substantially parallel to the axis of said sleeve, means on said pitch tool extending toward said pin and terminating adjacent thereto, means for adjusting the axial position of said pitch tool, and means for holding the pitch tool in adjusted position.

EDWARD H. HOELSCH.

References Cited in the le of this patent UNITED STATES PATENTS Number Name yDate 642,339 Krummel Jan. 30, 1900 1,431,757 Rhinevault Oct. 10, 1922 1,761,739 Nigro June 3, 1930 1,930,329 Vnar Oct- 10, 1933 2,543,370 Kludt Feb. 27, 1951

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