US1904242A - Center locating device - Google Patents

Description

April 18, 1933.l H, KIECKHEAFER 1,904,242

CENTER LOCATIING4 DEVICE Filed Nov. 4, 1929 fg W Z5 is 90 @Y @my Patented Apr. 18, 1933 i HENRY r. xIEcxnnArEn, or HAMMOND, INDIANA CENTER LVOGATING- DEVICE Application filed November 4, 1929.'k Serial Nof 404,710. l

This invention relates to certain novel improvements in a center' locating'k device and has for its principal object the provision of an improvedconstruction of this character 5 which will be highly efficient in use and economical in manufacture.

- The salientobject of my' invention is to pro-'p vide a'device of the above named character so .I vconstructed that it vmay be yemployed for 1 locatingv the center'on round stock such as is operated 'onV in lathes and other analogous turning machines. f

Another object ofthe invention isto prol vide a device of the above vdescribed character which will beparticularly' adapted for use in connection with so called round stock and asis well understood Vin the art this stock is supplied in 'standard sizes' and I, therefore, provide an arrangement which will permit the' employment of my device in connection 'with stock of various sizes. Y

A still further object of the invention'is to provide a device of the above described character which will embody a movable mem- 5 Vber andwhich will have portions for locking sections of the movable member in a predetermined position relative to a ymarking member.l Y

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts tov be hereinafter described and claimed.

The invention will'bebest understood by reference to the accompanying drawing, showing the preferred' form of 'construction andinwhich: j y '1 Fig. `1 is an elevational'viewrdepicting a preferred form ofconstruction for my invention in operating position;

Fig.AY 2 is nan elevational view looking in at Jlie bottom vside of my device as depicted in Figi-Slis a view flocking in direction fromFig. 2'; l

the' opposite Fig. 4 is aV sectional 'view taken substantiallyon the line 4--4 on F ig. 3; and I a Figfis a view taken substantially on the line5 -5fon Fig-4. Y f. (In theI accompanying drawing wherein I 59 have illustrated a preferred form of construction for my invention 10 generically indicates themain body portion of my limproved to'ol. This main body portionjincludes` a substantially circular head portion 1'1 from which a handle portion 12 is extend- 55 ed, the handle portion 12 being substantially vcircular in cross 'section and preferably being knurled as indicated at 13 to facilitate proper gripping thereof. i On the upper 11, as viewed in Fig. l, I provide a boss 14 which has a portion thereof disposedat the cen-ter of the head portion and whchincludes portions vthateXtend radially from,

vthe center infdiametrical opposition from 65 the extent of the handle 12and this is' clearly illustrated in Fig. 4. Extending through substantially the. midpoint of the circular head Y11 and through the boss 14 is a tapped opening 15. Y

The movable member of my improved de-l vice is generically lindicated by 16` and, ,as

best illustrated-in Fig. 2, this member 16 is circular in outline and is `equal in diameter to the'head 11. Extending through the mem- 75 ber 16 at the midpoint thereof is a bore 17. Asleeve `18 is arranged in the bore 17 and a bolt 19 is passed through the sleeve 18 and a screw threadedly fitted into the `opening 15,..

1a washer 2O being disposed intermediate the 80 head 21 of the bolt 19 and. the face of the member 16. In this manner the member 16 is supported on the head 11 for rotative movement. n Y y i .Y

'In the'periphery of the member 16 at 85 spaced kapart intervals semi-'circular recesses 22 are provided. These semi-circularl vree cesses `are of vdifferent diameters corresponding to the diameters of standard round stock such'as used in lathes and other turning ma- 90 ychines.

The'centers ofthe semicircular recesses are disposed on the circumference of the member 16 and the head 11." If desired suitable indicia indicated by 23 may be' provided in associationy with each of the recesses 95 22 to indicatethe size of these recesses.

A circular opening 24 is provided at substantially the point of juncture betweenthe handle 12 and the head 11 .andthe center line of rthis opening 24 passes through the cir- 100 face iof the circular portion '30 cumference of the member 16 for a purpose to be set forth presently. In the opening 24 a rib 25 is provided in which rib there is an opening 26. A plunger 27 has a head 28 which is substantially conical and which has the apex thereof extended. toward the face of the head 11 to which the member 16 is secured and this head 28 is disposed on one side of the rib 25. The plunger 27 has at the end thereof opposite the head 28 an enlarged head portion 29 and a reduced collar 30 is arranged intermediate the enlarged head portion 29 of the plunger 27. A coil spring 31 is disposed around the plunger 27 between the collar 30 and the rib 25and actsto retain the head 28 within the opening 24.

1n the member 16 on the facethereof disposed toward the head 11 a plurality of drilled openings 32 are provided. Each of the drilled openings 32 lies on a diametrical line drawn through the center of one of the recesses 22 and the center of the opening 17 and it is, therefore, manifest that for each ofthe recesses 22 there will be a diametrically disposed opening 32. The recesses 32 are disposed in Vcircular formation about the opening 17. Y

A recess 33 extends into the boss 14 and the head 11 toward the face ofthe head'11 to which the member 16 is secured and an opening 34 extends between this recess 33 and said face of the member 11. A pin 35 is provided which is secured to a head 36 that is disposed in the recess 33. A stem 37 extends from the head 36 in a direction opposite to the pin 35 and is connected to a. collar portion 38 exteriorly of which there is an enlarged head portion 39. The stem 37 is extended through a collar 40 that is retained at the outer end of the recess 33 by the screw or other analogous securing device 41. A coil spring 42 is disposed about the` stem 37 between the head 36 and the collar 40. The spring 42 acts on the head 36 to normally force the pin 35 outwardly through the opening 34. The radius of the circle on which the openings 32 are disposed is equal to the distance between the center of the tapped opening 15 and the center of the recess 33 Vand it is, therefore, manifest that the pin 35 may be selectively disposed in one of the openings 32.

To facilitate constructiomin the present instance, I have shown the handle 12, as being comprised vof two portions, one of which is the boss 43 that extends from the head 11. The boss 43 has at the outerl end thereof a tapped opening 44 into which the threaded stud 45k on the end ofthe handle member proper 46 is fitted but it is to be understood that the handle 12 might be made from one piece without deparating from the purview of my invention. The portion of the boss 43 known hereinafter as the abutment surface 47 is selected. This stock will be of a known diameter and in the present instance the stock 48 is of a diameter of one and o-ne-fourth inches. The recess 22 corresponding to this diameter is moved into fa, position in alignment with the abutment surface 47 and the pin 35 is inserted into the opening 32 that is in diametri-cal opposition to this selected recess 22. VThe stock 48 is then clamped in a vise 49 of standard construction in the manner illustrated in Fig. 1 wherein it will be seen that the stock 48 projects vertically fro-m the vise 49. My improved tool is then' gripped by the handle 12 and the end of the stock is disposed in engagement with theabutment surface 47 and the periphery of the stock 48 is engaged with the edge of the selected re- 'A cess 22. Since this selected recess 22 has a radius equal lto the radius of the stock 48, and since the center from which the recess 22 is defined lies on the circumference of the member 16, and since the apex of the conical head 28 is disposed on the center line ofthe opening 24, which center line passes through the circumference of the member 16, it is manifest that, whenv a blow is struck on the head portion 29, the conical member 28 will be forced outwardly against the action of the spring 31 and the apex thereof will be forced into thegcenter of the stock 48 on the end and it is, therefore, manifest that the center will be marked on the other end of the stock which will greatly facilitate the centering of the stock in a lathe or other analogous turning device.

In order to position another recess 22 in alignment with the abutment surface 47 the head portion 39 is gripped and the pin 35" will, therefore,vbe retracted from the recess 32 in which it is disposed, VThis willpermit the member 16 to be rotated relative 'to the i" head member 11 and when theselected recess 22 comes into alignment with the abutment 1n use, a section of stock indicated by 48 surface 47 the pin 35 will enterthe opening 32 that will have been moved into the above described diametrically opposed position.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, lthis is'capable of variation and modification, without departing from the spirit ofthe invention. I, there-E fore, do not wish to'be limited tothe precise details of construction set forth, but desire to avail myself of such variations and modiications as come withinthe scope of the appended claim. Y x

Having thus described my invention what I claim as new and desire to protect by Letters Patent is A center locating device comprising a cirl cular plate, a handle element extending therefrom, a disc rotatably mounted on said plate and having a pluralityof recesses of different radii formed therein arranged about its circumferential periphery, said disc having L radially arranged indentations on the face thereof contiguous to the plate, a member slidably mounted in said plate and'selectively engageable in the indentations to hold the plate and disc relatively immovable with respect to each other, and a punching element slidably mounted in the handle on the periphery of the disc and adapted to strike the center point in the end of round stock selectively disposed in one of said recesses.

v In testimony whereof I afliX my signature.

HENRY F. KIECKHEAFER.

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