US1113987A - Spring-manufacturing machine. - Google Patents

Description

E. J. HARVEY.

SPRING MANUFACTURING MACHINE.

APPLICATION FILED APB.12, 1913. 1,1 1 3,987. Patented 001:. 20, 1914.

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Fllllnllll Ill B. J. HARVEY.

SPRING MANUFACTURING MACHINE.

APPLICATION FILED APR. 12, 1913. 1 1 1 3,987. Patented 00a 20, 1914 5 8HBE'18BHEE'I 2.

ewumm 6M f E. J. HARVEY. SPRING MANUFAGTURING MACHINE.

1,1 1 3,987. Patented 0011.20, 1914 6 s1; BIB-sums,

B. J. HARVEY. SPRING MANUFACTURING MACHINE.

APPLIGATION FILED APR.12,1913.

Patented Oct. 20, 1914.

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E. J. HARVEY. SPRING MANUFACTURING momma. APPLICATION FILED APRJZ, 1913.

Patented Oct. 20, 1914,

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EDWARD J'. HARVEY, OF RACIN'E, WISCONSIN, ASSIGNOR TO HARVEY SPRING cc FORGING COMPANY, OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

SPRING-MANUFACTURING MACHINE.

Specification of Letters Patent.

Patented Oct. 20, 1914.

Application filed April 12, 1913. Serial No. 760,571.

To all whom it may concern Be it known that I, EDWARD J. HARVEY, a citizen of the United States, residing at Racine, county of Racine, and State of Wisconsin, have invented new and useful Improvements in Spring-Manufacturing Machines, of which the following is a specification.

My invention relates to improvements in machines for manufacturing various styles and shapes of springs for automobiles and other vehicles. Experience has proven that springs, as heretofore constructed, sometimes warp and get out of shape while being tempered, when, additional labor is required to restore them to their proper shape after having been tempered.

The object of my invention is, among other things, 1st, to provide a device for retainin' the springs in their forming clamps while eing tempered and cooled, whereby it is practically impossible for such springs to become warped while being tempered, and 2nd,. to provide a device whereby one set of springs may be submerged in oil and tempered while another set is being put in place and clamped into the required shape preparatory to being submerged and tempered, whereby the work of forming and tempering the springs, as compared. with previous methods, is not only greatly accelerated, but the contour of the springs thus produced is more perfect.

My invention is further explained by reference to the accompanying drawings, in which Figure 1 is a plan view thereof; Fig. 2 is an end view; Fig. 3 is a side view; Fig. 4 is a plan of a part of the driving mechanism and the clutch mechanism, a part of the clutch mechanism being broken away to show the interior construction; Fig. 5 is an end View of a part of the mechanism shown in Fig. 4; Fig. 6 is a side view of the automatic device for operating the clutch shown on the left handside of Fig. 4; Fig. 7 is a plan View, and Fig. 8 is a vertical section of the clamping mechanism supported on the respectiveends of the oscillating platform. Like parts are represented by the same ref erence numerals throughout the several views.

1 is a platform upon the respective ends are formed and held in the desired shape while being submerged in oil and tempered.

2, 2 are standards from which the platform is. pivotally supported by and upon the shaft 3.

4 is an oil tank, which is nearly filled with oil 6.

While other motive power may, if desired, be employed, I preferably operate my machine With an electric motor of ordinary construction.

Motion is communicated from the motor 5 to the movable spring-holding clamping members 10 through the shaft 7, pinion 8, gear wheel 9, shaft 3, pinion 20, gear wheel 21, clutch 22, shaft 3, eccentric cams 11, cam-inclosing collars 12, arms 13, and pivotal bolts 14:, operating in apertures provided therefor in the lugs 15. It will be understood that the lugs 15 are formed integral with or rigidly connected to the movable clamping members 10, and that said movable members 10 are caused to move toward and from the opposin stationary clamping members 16 with c2151 revolution of said eccentric cam 11. The movable clamping members 10 and the stationary clamping members 16 are each provided with a series of adjustable bearing blocks 18 and 19, which blocks are adapted to be manually adjusted to conform to any shape -of spring which the operator desires .to manufacture, so that, when once adjusted, all springs formed by said clamping devices will be given the same desired shape, e. 9. assuming that the series of blocks 18 and 19 have been adjusted to conform to the desired shape of spring, a plate of steel, which has previously been heated to the required temperature, is placed between said opposing series of forming blocks, and the movable clamping members 10, when elevated, are automatically forced as hereinafter described toward the stationary members, whereby the heated plate of steel is compressed into the desired shape by said forming blocks, while the series of forming blocks upon the opposite end of said platform is simultaneously withdrawn from the sub merged plate, when,-by the further movement of the motor, the heated spring is submerged in oil, and the tempered spring is brought above the surface of the oil prepara tory to being removed. Thus it is'obvious that, with each revolution of said eccentric cams 11, one spring is clamped and formed while the spring previously clamped is released.

The oscillatory movement of the platform 7 is communicated to it from the motor 5 through the shaft 7, pinion 8, gear wheel 9,-

cam 26, said platform 1 is caused to oscillate upwardly and downwardly as described.

27' is a fly wheel, which is rigidly supported from the shaft 3.

The adjustable forming blocks 18 are respectively provided with a rod 28, which rod has slidable hearings in the apertures 29 in the movable clamping members 10, and said blocks 18 are adapted to be adjusted to conform to the shape of the spring to be made, upon said rod 28 by first releasing the set screws 30, When said set crews havebeen released, the said blocks 18 are adjusted to conform to the shape of the spring to be manufactured, and when the proper adjustment has been made, said set screws are turned back in their bearings against said rods, whereby they are adapted, when forced against the heated spring, to communicate to it the required shape. The several blocks of the respective series 18, together with their supporting rods 28, are yieldingly supported from said clamping. members 10 by the spiral springs 31, which springs are interposed between the bar 10' of sa1d clamping member 10, and the transverse pins 32, which pins 32 are carried by said rods 28. Thus it is obvious that each block of the series 18 has a slight movement independent of the others, as may be required to conform to slight irregularities of'the surface of the spring which is being formed: The several blocks;

of the res ective series 19 are adjustably supported etween the upper plate 34 and the lower plate 35 of the clamping member 16 upon the rods 36, which rods hear at their outer ends against the stationary bar 37, and are adjustably supported in apertures provided therefor in said blocks by the clamping screws 38. Thus it is obvious that, when adjusting the series of blocks 19, to conform to the shape .of the spring which it is desirous to make, the set screws are turned back in their bearings when said blocks 19 are readily moved forwardly or backwardly upon the rods 36, and when'the desired adjustment has been made, said set screws are turned forward in their bearings against said rods, whereby the blocks of said series 19 are rigidly retained at the desired points of adjustment.

It will, of course, be understood that,

tempering and placed between the forming while the motor is running continuously the oscillating platform 1 is operated intermittin 1y as it is necessary that it should remain at rest while one set of springs is being tempered and one set of springs is being put in place between the clampingmembers of the machine. To accomplish this object, the gear wheel 21-is adapted to 'revolve freely upon its supporting shaft 3 without communicating motion to said shaft. When, however, the metal tobe formed into springs has been securely clamped between the clamping members, as prevlously described, the initial motion is communicated from the revolving gear wheel 21 to its supporting shaft 3 by the manual act of the operator as hereinafter described. Assuming that the metal has been heated to the desired temperature for clamps upon the oscillating platform, the operator then draws either of the handles 38', 38 outwardly in the direction indicated by the arrows in Fig. 5, whereby motion is simultaneously communicated from said handles 38 to the respective pawls 39 and 40 through the bars 41, .41, pivots 42 and 43, levers 44 and 45, pivots 46 and 47, link 48, and elbow-crank levers 49 and 50,

which elbow-crank levers are connected or formed integrally with said pawls 39 and 40,

whereby said pawls are simultaneously thrown apart and. away from the hub 51, and thereby brought out from beneath the head, or angular bend 52 of the clutch rod v 53. When the clutch-rod 53 is released, it

is instantaneously thrown toward the left (reference being bad to Fig. '4) and between the lateral projecting lugs 54 and 54 by the resilient action of the spring 55, whereby the revoluble movement of the gear wheel 21 is communicated to the shaft 3, and from thence to the respective clamping members 10 through the eccentrics 11, collars 12, arms 13, pivotal bolts 14, and lugs 15, whereby said clamping members are forced; against the metal to be formed and tempered and whereby such metal is rigidly retained in the required form until submerged by the downward movement of the supporting platform and 'tempered; Motion is automatically communicated from the continuously revolving gear wheel 21 to the pivotally supported platform 1 as follows: It will be understood that the hub 22 is rigidly fixedto the shaft 3, and that, con-' sequently, when motion is communicated from said gear wheel 21 to said hub 22, said shaft 3 will be revolved. It will now be understood that when the hub 22 is being revolved by contact of the shoulder 54 or 54' with the clutch rod 53, the motion of the gear wheel 21 will be communicated to the shaft 3 through said lug 54 and hub 22, and that motion will be simultaneously communicated from said shaft 3 to the collar 60 upon the left hand side of Fig. 4, whereby the projecting arms 61 will be caused to revolve with said shaft 3 and will be thereby brou ht into contact with the roller 62, which is revolubly supported on the arm 63, whereby said roller and arm w1ll be thrown toward the right (reference'bemg had to Fig. 6) when motion will be communicated from said arm 63 to the pawl-supportin and pivots 66, 66, whereby the pawls 7Q, will be automatically thrown apart and away from the collar 71. As soon as the pawls 70 have been thus separated and thrown away from the collar 71, they will be brought out from beneath the head 71' 'of the clutch rod 72, when said clutch rod 72 will be thrown toward the right by the recoil of the spiral spring 73, whereby the inner end of the clutch rod 72 will be brought within the circle described by the lateral projecting lugs 74, whereby the revoluble movement of said lugs, which are rigidly connected with the gear wheel 21 through the hub 21, will be communicated through said clutch rod 72 to the hub 22 and from thence through the gear wheels 23 and 24 to the shaft 25, when, by the revoluble movement of said shaft 25, the eccentric 26 will be caused to'revolve between the bifurcated arms 27, whereby the respective ends of the platform 1 will be oscillated upwardly and downwardly with each complete revolution of said shaft 25.

It will be understood that, in operating my machine, an operator is preferably located at the respective ends of the oscillating platform 1, and that when the metal to be operated upon has been placed within the forming clamps, the operator at either end of said platform will draw upon one of the handles 38, whereby the metal will be clamped between the forming blocks and forced into the desired sha e and thus retained within the grip o the clamping mechanism; that, by a further movement of the operative mechanism, motion will be automatically communicated from the first clutch mechanism, manually operated by the handles 38', to the other clutch mechanism, as stated, through the revoluble movement of the shaft 3, whereby the elevated end of the oscillating platform 1 will be caused to descend into the oil or other tempering liquid, while the opposite end will be brought above the surface of such liquid. When this is done, the clutch mechanism upon the left of Fig. 4 will be automatically disengaged from operative connection with the shaft 3 as previously described, when the platform will be permitted to remain at rest until the metal which has been formed and tempered has been removed and replaced with other metal which has been heated to the desired arms 64, 64 through the links..6 5, 65.

temperature.- When this is done, the-opera tor upon that side of the platform last elevated will also'draw upon the next adlacent handle 38', whereby the clutch mech anism upon the right will be again thrown into operative connection with the drivin gear 21, when the operations described W1 l be again and continuously repeated.

It will be understood that -the levers 44 and 45 are both pivotally supported from a stationary member 75 of the machine, and that. the 'levers. 64, 64 are also pivotallyfsit pported from a stationary member 76 0 machine; also that with each half-revolution of the shaft 3, the heads of the respective clutch rods 53 and 72 are respectively drawn toward the right and left by contact with the angular surface of the pawls 39 and 40, as shown respectively upon the right and left in Fig. 4; that as said heads, or angular bends are thus drawn over the angular surface of said pawls, clutch rods are respectively drawn toward the right and left and out of engagement with the angular projections 54, 54 and 74, whereby said angular projections are free to revolve with the gear wheel 21 without communicating any motion to the gear sup orting shaft 3. The arms 49 and 50 o the clutch mechanism are connected together by the spiral spring 77, while the arms 64, 64 of the other clutch mechanism are connected together by the spiral spring 78, said springs being adapted, by their recoil, to draw the respective arms, with which they are connected, toward each other as soon as they are respectively relieved, one from the action of the operator, and the other, from the action of the driving mechanism of the machine.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a machine of the described class, the combination of a liquid tank, an oscillating platform, means for pivotally supporting said platform in connection with said tank, a clamping mechanism supported on the respective ends of said platform, a motor, manually operated means for connecting said motor both with said platform and clamping mechanism, whereby the power of the motor may be utilized for both oscillating said platform and operating said clamping mechanism and whereby metal is retained in its required shape while being tempered.

2. In a machine of the described class, the combination of a 1i uid tank, a pair of standards supported rom said tank, a platform pivotally supported from said standards, a clamping mechanism supported, on the respective ends of said platform, a motor, a revoluble shaft, a gear wheel, loosely the opposite ends of said supported on said shaft, a clutch, rigidly 13o wmwwummvm was sha e, and automatic means, connected with sa-i revoluble shaft for actuating said pivotally sup orted platform after said metal has been 0 amped.

In testimony whereof I aflix my signature in the presence of two witnesses. EDWARD J. HARVEY.

connected to said shaft, a manually operated rod connected with said clutch, means connected with said rod for manually throwing said clutch into locking en agement with a 8 said wheel, whereby the revo uble movement of said wheel will be communicated to said clutch and shaft, means for communicating motion from said shaft, when revolved, to Witnesses: said clampm mechanlsm, whereby the heat- JAs. B. ERWIN, l0 ed metal wi be forced into the required 0. L. ERWIN.

Oepiee of this patent maybe obtained for live cents each, by addressing the Commissioner 0! Patents.

Wuhiazten, n. e."

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