US1094975A - Punch for castellating nuts. - Google Patents

Description

L."H. BRIGHT MAN. PUNCH FOR GASTELLATTNG NUTS.

APPLICATION FILED DEC. 21, 1912.

Patented Apr. 28, 1914.

FIG. 1

@ Hum um 4 U W 9 i .2 @22 ,r/ a 3 I u INVENTOR. IATHAM H BRIGHTMAN ATTO N151.

HUT/WIS $55 L. H. BRIGHTMAN. PUNCH 1:011 GASTBLLATING NUTS.

APPLICATION FILED-D3021, 1912.

Patented M11126, 3924..

2 SHEBTS-SHEBT 2.

v Y 'INVLNTOR. v LATHAM H.BRIEHTMAN I structed according to the best mode I have trate the novel features of my invention, the

a the line A Fig. 3. Fig. is. a detail view I UNITED sTArnsra rENT OFFICE.

LATHAM H. BRIG-HTMAN, OF COLUMBUS, OHIO.

PUNCH FOB CASTELLATING NUTS.

To all whom it may concern: 1 g

Be it known that l, Larrra'n II. BRlGll'lE MAN, a citizen of the United States, residing at Columbus, in't-hecounty of Franklin and State of Ohio, have invented certain new and useful Improvements in Punches for GasteIlating Nuts, of which the following isa specification.

present ii'ivention relates to improve ments in a punch for caste-Hating nuts and like articles, and is. designed to overcome certain objectionable features attendant upon the present" mode of performing this work by providing certain novel features and combinations of parts that will perform the functions in a more efficient manner, by a more facile manipulation, and a more economical fashion. in the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention conso far devised for the practical application of the principles of the invention. Figure 1 is asectional side elevation of machine eml'iodying the novel features of my invention, parts beingshown in section, and some parts omitted for convenience of illustration. Fig. 2 is an enlarged elevation of so much of Fig. 1 as is necessary to i.llus-- punch bein shown in raised position. Fig. 3 is a top p. on vi'ewof Fig. 2. Fig. 4: IS an end view of Fig. 3, partly" in section taken showing the nut holding stem and anvil, and the clearance spacebetween the nut and, anvil. Fig. 6. shows a blank nut before castellatin-ga Fig. 7 shows the blank castellated and Fig. 8 shows an, end view of the castellated nut.

In performingthe operation of castellating nuts and similar articles according to the modes with which I am familiar, wherein the notches or grooves are form-ed by a milling machine, considerable time is expended in the operation, and a'bur s invariably present upon the outside of the nut formed by the mill-mg tool as it passes across the nut. To overcome and eliminate these and other objections present in milling machines. for this purpose, I adapt. a punching Specification o f Letters Patent.

Application filed December 21, 1912.

into the socket 24.- of t Patented Apr. 28, 1914. Serial l\To. 73 8368.

machine for the purpose of forming. the

notches or grooves in the nut.

in the drawings a standard type of punch. mg machine is -by the numeral l.

illustrated, and designated The punch or tool 2 is formed with a cut-away portion or notch 3 by means of which the depth of the groove to be cut may be gaged or determined, and

this tool is held in its standard or usual holder 4 of the vertically reciprocating head 5 of the punching machine. A rotatable cam or eccentric 6 revolves with its shaft 7, and, through the friction roller 8 actuat-es the rocker arm or lever 9 that is pivoted in the frame of the machine at 10-. A spring 11 which is hooked into one end of the rocker arm extends over the pin 12 on the bracket 13 of the sleeve 14, and the sleeve isadjustable on the bar 15, a set screw l6 being provided for holding the sleeve in adjusted position. These elements, the reciprocating punch and rocking lever or rocker arm, are shown as exemplifying structures and may be varied, if desired, or other devices substituted for performing their functions.

in adapting the machine for use according to my invention I employ the base plate 17 which is attached as bybolts 18 to the lower jaw 19 of the machine; In Figs. 1 and 2 it will be observed that the plate extends backwardly a considerable distance beyond the rear of the jaw andis, so far as the extension is concerned, unsupported. At the rear end of the plate 17 abl'ock 20 is-located upon which is supported the member 21 which is a cylindrical bar having opposite flattened faces, and the bar is secured, through the medium of the block 20, by. bolts to the base plate. From this" description taken in connectionlwith. the drawings it will be evident that a flexibility or resiliency is present due to the arrangement of the plate. block and bar as described.

The forward or front end of the bar ljl is bored to fit a stem 23. The stem 23 as illustrated in the drawings is of uniform diameter throughout its, length, but it will be understood that, althou h the end which fits fie bar 21 will be of uuiformsize, the forward end of the stem may be increased or diminished in size to adapt stemfor use, with varying sized nuts. In this manner a set or series-of stems is provided, and the stems are interchangeable in use with the supporting bar 21. Each stem is provided with a slot 25 extending t'herethrough, which, when the stem is in proper position, extends vertically. of the stem, and the stem is secured in position by means of a bolt or set screw 25 that is threaded into thcbar 21.

A slidable sleeve 26 incases the reduced forward end 27 of the bar 21, and by means of a ring 28, which is threaded on the rear end of the sleeve, the sleeve is connected through the medium of a pair of links 29 to the lower end of the rocker arm 9. The sleeve is limited in its rearward movement by the shoulder 30 of the supporting bar 21, i

but may be moved forward when the rocker arm is actuated as will be understood. The lower half of the front end of the sleeve is cut away to form a hood, and the hood is slotted, as at 31 to aline with the slot in the stem 23, so that the reciprocable punch may pass through both slots.

An anvil or block 31 is securely bolted to the base plate,'and the anvil is formed with a semicircular recess 32 disposed about the front end of the stem 23. s

In Fig. 6 a blank nut is illustrated, and in Figs. 7 and 8, this blank is shown as having had the slots 33 punched therein across the face of the sleeve portion 34.

It should be understood that the nut blank is castellated .prior to the operation of threading or tapping, so thatwhen the nut is slipped over the front end of the stem 23 there are no threads to be mutilated.

The modus opera-nth of the device is as follows: The-nut blank is slipped over the stem 23, either by hand, or if desired an automatic feed may be employed. When placed in position on the stem the nut is held, as by a pair of pliers and may be so manipulated. In Fig. 5 it will be noted that there is a slight clearance between the sleeve portion-34 of the nut (dotted lines) and the curved recess 32 of the anvil. This admits of facile application of the nut to the stem,

and also allows for a certain degree of give or resiliency of the nut supporting lements, when the punch descends.

In Fig. 2 the punch or tool is about to impinge against the sleeve of the nut to cut the slot or groove therein, While in Fig. 1 the tool is illustrated as having punched the material to form the groove, and the tool is about to ascend. The operation of the cam 6 will rock the lever 9, and, after the punch has been withdrawn from the slotted hood and stem, the sliding sleeve will be forced forward or outwardly on the bar to push the castellated nut from the stem. After each movement of the punch, the nut is turned on the stem-to present another point for cutting a slot. In the drawings I have illustrated a hexagonal nut, and while this could, if desired, be castellated by only three movements of the punch, I prefer to include in the operation of castellation, six movements. By utilizing six movements or strokes of the punching tool, and as illustrated in the drawings, the punch acts on the metal cutting from the perimeter of the sleeve 34 to the bore ofthe nut only, and not crossing the axial center of the nut. in this mode of cutting, a bur 0n the outside of the nut is obviated, and the bur that is formed as a result of the passage of the tool is located at the inner bore of the nut blank may be ignored in the further process of perfecting the nut.

The .construction of the assembled base plate. block, and supporting bar, as before described, permit a slight flexibility or resiliency, so that when the tool comes down against the nut to be punched, the nut on the stem will give sufficiently to permit its being seated firmly on the anvil during the tooling of the nut, but as the tool is withdrawn, the resiliency of the parts returns the nut to normal position where it may be either turned for another movement of the punch, or be expelled from the stem by the sliding sleeve.

It will be evident of course that other forms and sizes of nuts may be castellat-ed other sizes of stems employed to suit the nuts, and also that other tools or punches of varying sizes may be utilized as required.

Having thus fully described my invention what I claim is z i 1. In a machine as described a support comprising a base plate. attached to andproiecting beyonda portion of the machine, a resiliently supported holder having a socket and supported from and above the base plate. a punch, a stem in the socket, having a guide slot for the punch, and an anvil in cooperative relationship with the stem.

2. In a machine as described a support comprising a base plate attached to and projecting beyond a portion of the machine. a resiliently supported holder having a socket and supported from and above the base plate, a punch, a stem in the socket having a guide slot for the punch, an anvil as do scribed, and a slide, sleeve on the bar with actuating means for ejecting the completed work from the stem.

In a machine as described a support; comprising a base plate attached to and projecting beyond a portion of the machine, a resiliently supported holder having a socket and supported from and above the base plate, a punch, a stem in the socket having a guide slot for the punch, and an anvil as described.

4. In a machine as. described the combination with a reeiprecahle too], of a resiliently In vtestimony whereof I afl'ix my signat re supported bar, a base plate to which the in presence of two Witnesses,

bar is secured at one end, and an anvil :ulr V r v v; jacent the bar and arranged to receive the LA I load by the pressure of thereciproeable tool Witnesses: as the latter engages a nut, for the purpose 0. M. bimewr, described. I IDA A. EVANS.

Copies of this patent may be obtained fol-five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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