US1685262A - Process of making gland nuts - Google Patents

Description

w. R. WiLEY PROCESS OF MAKING GLAND NUTS Fiiea Dec; 6, i924 iamlmmnn'imunulm P Patented Sept. 25, 1928.

' UNITED STATES PATENT orries;

WILLIAM R. WILEY, OF MOUNT CLEMENS, MICHIGAN.

PROCESS OF MAKING GLAND NUTS.

Application filed December 6, 1924. "Serial No. 754,288.

tion of the rough slug, and its subsequentma chining, and the object of my invention is to very appreciably reduce this cost without impairment of the eflicienoy orappearance of the finished nut. In the drawings: 7

Figure 1 is a central sectional elevation of an interiorly threaded nut or washer, in the cheaply manufactured form furnished precedent to the closed. t Figure 2 is an elevational view partly in section, showing the nut in position under a descending punch member, to effect the first bending. r V Figure 3 is a similar elevational'view of the next step in the process, showing the means employed to effect the bending over of the upper end of the nut or washer.

Figure 4 is an elevational'view with its in- .terior portions phantomed, showing a com:- pleted nut. Figure 5 is a view similar to Figure 4, showing a nut treated only partially, because of its possibility of use thus, in some such case as the gland of a radiator valve or the like. 7 Fig. 6 is a sectional View of form illustrated in Fig. 5, showing the die.

' The nut A as furnished, after being cheaply manufactured by means and processes now well known, is placed over the columnar projection C ofa supporting die member, with lts lower or collared end B at the bottom in, such position that the top of the projectionC rests appreciably below the top edge D of the threaded neck of the nut. In this position a power punch E is caused to descen'd'heavily thereon, with its sloping under surface F acting on the top of the neck D to force'the same inwardly. This operation, however, is often not sufficient to force the threaded interior surface of the extreme tip edge D of the neck against the top of the die projection C, and correspondingly and resultantly leaves a larger aperture between the bent over edges of the nut than it is intended that some forms process steps herein to be dis-.

at least of the finished nut should have. It is accordingly removed from the punch C, and placed over the top projection H- ofv the die J, which is of such height that the partly deformed nutdocs not reach downto the top surface of the base of the die, being prevented therefrom by the overhanging of the then inbentedges of the neck D against the top 01' shoulders of the projection H. The plain punch K is then brought down with appropriate force upon the inwardly inclined top edges of the neck D, with such force as to complete their bendingover into a plane substantially transverse to the sides of the nut and the axis thereof both as against the sides, of thepunch projection or sizing plug G, andas well to force the threaded interior faces ofthe upper v I portion of theneck D so heavily against the .top surface of the projection H as to practically cause the threading to disappear therefrom. The now finished nut is removed from the die projection H with a top aperture L ofthe desired size, due to the inward bending of,

the neck portion D. While I have illustrated the finished nut as having hexagonal faces P,

it is obvious that any desired exterior contour 1 can be supplied in the nut as firstroughly turned out,fand as finished, without departure from the spirit of the disclosures herein made.

In Figure 5 Ihave illustrated a form of nut adaptedparticularly for some such use as for the packing gland about the stem of a radiator valve. In this form the finishing operation just described in connection with the die J, shown in Figure 3, is omitted, and the tapering top portion N of the walls of the nut is left to engage with its inner edges about the radiator seem, while the upper portion of the nut not occupied by the stem, may be filled with felt packing or the like, to prevent leakg 7 In mentioned require so comparatively little of their top edge to be bent over thatby the use of an appropriately shaped die such as shown in connection with a just finished'nut in Figure 6' can be completed in but one punch operation. In this figure the'fianges Q extend inwardly but a comparatively slight distance, as compared with the nut structures shown in Figures 2 and 3,and the central aperture'R is correspondinglylarger in diameter. It is also preferable inthis instance to make the upsome instances nuts of this type last v feet the flattening of the screw threads on the inside face of the upper edge of the neck.

The same )rinci les-ot' manufacturin econ- V omy hold true, however, in either case, since the threading'of a cylindrical blank such. as

shown in Figure 1 is a comparatively'inexpensive process compared with the boring out and threading of the closed or blind vend ofa slug, that when finished is designed for the same-purpose as my finished nut; and either of the stamping-over processes hereinabove described adds to the cost of a finished nut thus-made only a fraction of the saving etfected by my process. V

In following either process as above distinguished, I find by'careful n'iicroseopiciexamination and measurements of completed nuts thus made that a slight bulging of the sides of the lower portion of the nut really takes placeas a result of the subject-ion of the punch and die operations. I have illustrated thls 1n exaggerated degree at S, in Figure 2. This makes easy the non-catching removal of the finished article from the supporting die projection C.

WhatI claim is: v 1; The process of forming a partially headed 'nut, consisting in efl ectingthe inward ibendingof the top edge of an interiorly threaded blank bypressurc exerted thereon angularly to the axis of the blank contemporaneously with the rigidsupporting,ofthe base portion thereof, and thereafter pressing the bent-over portion into a plane surface perpendicular to the axis of the blank, thereby as well flattening the interior threadings initially present on the portion thus bent over.

2. The process of forming a terminally apertured cap nut, consisting in inwardly flangin the top edge of an interiorly threaded bl'an: by pressure applied from Without and acting thereon angularly to the axis of the blank, and thereafter stamping the inbent y portion into a position whose plane is per-' p'endicular to the axis of the'blank, the screw threadings initially present on the portion thus'treated being substantially flattened by such last named treatment. 1

3'. The process of forming a gland packing nut from an interiorly threaded cylindrical blank, consisting in inbending the tope'dge 1 axis of the blank is substantially perpen dicular. a I p 4. The process of forming a gland packing nut, consisting in rigidly supporting the lower end of an interiorly threaded cylindricat blank while subjecting the upper edge thereof to the applied pressure thereupon of a concaved forming member moved there'- toward in axial alignment with the blank,

and thereafter subjecting the portion thus inbent to further stamping action exerted lengthwise of the axis of theblank, whereby l the same is forced into position of perpendicularity thereto. i

In testimony whereof, I sign this specifieation. V

WI AM 'R. WILEYQ

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