US1403372A - Adjustable wire-coil-spring machine - Google Patents

Description

A. ARMSTRONG.

ADJUSTABLE Wma cmL s PmNGMAcHlNEV APPLICATION FILED NOV. 6. |920.

lmgo Patented. Jan. ws w22,

. ml' ...E/IlluIl l? del WS "m BEL ARMSTRONG', 0F SAN lEPt--NCISC, CrLl'FOEtNA, ASSEGNOR 0F ONE-HALF TO PATRCK J. v'URl-EY, F REVERSDE, CALEORNEL.

DJUSTABLDE IRE-CJL-SPH-NG INEACHNE.

Speeeation of Letters Patent.

Fatented Jan. 1G?, 1922.

Application filed November G,K 1320. Serial No. 422,292.

To all w hom t .cm/.y conce/m Be it known that L linnn ARMSTRONG. a citizen ci the United States, residing at San Francisco, in the county or `San Francisco und State ot California, have invented new nd useful mprovements in Jjrdjustable ikire-Coil-Spring Machines of which the 'filovv'ing is a specification.

This invention relates to improvements in adjustable wire coil spring machines and rel es jmrticulalv to that type oii machine wherein a piece ot' spring wire is coiled about mandrel tor the purpose of `forming a helical coil. l5 The principal object ot this invention is to produce a machine which will coil a wire in a simple and eh'ieient manner and one which will meet the requirements ot the average mechanic. Another object is to produce a machine which .is portable and one which will produce coils oi various diameters. `v

Smother object is to produce a machine o t tais character wherein the convoluticns ot' the coil may he spaced one from the other to produce an open or closed spring to meet the requirements desired.

further object is to produce a simple means for holding the mandrel upon which the coil is to be wound and to provide accommouation tor mandrels ot various sizes without additional parts.

A still further object of this invention is to provide a machine which is simple in construction, compact in the arrangement of its parts, positive in action, and inexpensive in manufacture. Other objects and advantages of this invention willv he apparent during the course ot the tollowing description.

in the drawings Yforming a part ot this specification and in which like numerals are employed to designate like part-s throughout the same, itigure 1 is a view in side elevatioin partly in cross section, of my invention.

Figure 2 is a top plan view of Figure l. Figure 3 is a cross section taken on the line of Figure l. 5o Figure 4 is a cross section taken on the line d-fi ci' Figure l:

Figure 5 is a detail view looking` in the direction ot the arrow on Figure 2.

Figure 6 is a detail view taken on the line 6-6 of Figure 5, and

Figure 7, is a lperspective view of a spacer member.

ln the accompanying drawings wherein for the purpose ot illustration is shown a pret'erred embodiment ot' my invention, the l unieral 5 designates a base-plate here shown in the form of an angle iron, having one ieg as at G. The purpose of this construction is to provide means for holding the device in a vice as could be easily done by inserting the leg 6 between the jaws of a vice.

it is, of course, understood that other means ot supporting might be used without departing trom the spirit of this invention.

The numerals '7 and 8 refer to tubular downward extensions, preferably formed integral with the base 5. These tubular eX- tensions are screw-threaded as shown at 9 and provided with screw-threaded caps 11. Slotted openings 12 are provided in the baseplate 5 and in alignment with the tubular extensions T and 8. These slots are formed parallel with. each other so as to accommodate sliding'supports 13. Each of the supports has a contour as is best shown in Figure fi and carries at its lower end a screwthreaded rod 16, which passes through the caps 11, and is provided with wing nuts 17.

A helical spring 18 is housed within the tubular portions T and S and about the rod 1G so as to abut the inner surface ot the caps 11 and under-surface of the supports 13. The action ot these springs is to cause the supports to be moved outwardly .with respe'ft to the tubular extensions.

The numeral 19 refers to a mandrel or arbor which is adapted to lie parallel to the base 5 and to be held at a pre-determined distance therefrom by the position ot the supports 13, the distance being regulated b v the wing-nuts 1'2".

[in opening 21 is provided in one end ot the mandrel and a handle 22 is attached to the mandrel adjacent to the opening 21.

At the rear ot the base 5 1 secure a U shaped member 23, the legs of this member serving to journal a pin 24, having a wingnut 26 thereon. lThis pin serves to support the bifurcated ends 27 cit a spacer member 28. This spacer member is tapered as shown vthe Wire being operated upon.

at 29 and is beveled as shown at 31,.vvhich beveled portion together' With the contours of the supports serve as means for preventing a nipping of the Wire when it is being :formed on the mandrel.

By referring to Figuresl, 2 and 5, it will be noted that l have shown tivo spacer members placed adjacent to eachother, the second spacer being designated by the numeral 32' and of lesser Width than that designated by the numeral 28.

A Wire guide is shovvn in'Figures 5V and 6 at 33 and serves to? guide the free end oi Assuming that -it is desirous oi' Winding a spring, the 'operation'of my device is as follows:

A mandrel ofthe desired internal diameter of the spring to be Wound is selected and the Wing-nut 17 loosened until the supports 13 pro]ectbeyond the base 5 a sufficient dis tance to allovv the mandrel to be inserted through the same as shown in Figures 1., 3

and 4c. The Wing-nuts are Vthen tightenei'l until the mandrel is moved toward tbe base and is held ytherefrom only a suiiicient distance to clear the Wire to be Wound upon the same as is shown in Figures 1 and 6.

A ivire to be made into spring is inserted through the Wire guide 33 and into the opening 21 in the mandrel, the opening 21 beingl opposite the guide Ey nou7 selecting the proper number and Widths ot spacing men-ibers as shoivn in Figure 4 and insertingl the Vsame so that the b-ifurcated ends 27 straddle the pin 24k, afspacer may be built up of any desired Width to leave between the various convolutions of the spring to be created.

By now rotating the handle 22, the Wire Will be coiled about the mandrel and as the spacerV contacts with the rst convolution, it Will move the mandrel forward, with the result that the mandrel. Will be moved fiorivard continuously at each revolution, thereby creating an even spring.

It will thus be seen that I have devised a means for Winding springs, Which is` simple and one which Will allow an amateur to Wind a spring of any diameter and also one which Will permit of spacing adjustment to suit the desires of the operator.

tis to be understood that the form of my n invention herewith shown and'described, is

to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts vmay be resorted to Without departing from the spirit of the invention orI the scope of the subi oined claims.

Having thus described my invention lV claim:

1. In a spring ceiling device, a base, tubular extensions formed on said base, caps carried on said tubular extensions, supports slidable in said tubularv portion and extending beyond said base, rods secured on said supports, saidV rods extending through said caps, means for varying the amount o': eXtension oi' said supports, a mandrel carried in said supports, said mandrel being held parallel to said base, and means for spacing the convolutions oit a spring being kformed on said mandrel.

2. ln a device of the character described, a base, tubular extensions formed on said base, caps secured to said tubular extensions, supports slidable in said extensions and project-

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