US1638259A - Forging mechanism - Google Patents

Description

Aug. 9, 1927.

F. A. HALLECK FORGI NG MECHANI SM Filed April 5, 1922 1 F- W4. ad

of Fig. i.

Patented Aug. 9, 1927.

,Umrsn STATES PATENT OFFICE.

FRANK A. HALLECK, OF CHICAGO, ILLINOIS, ASSIGNOR ,TO SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS. I

FORGING MECHANISM.

Application filed April 5,

My invention relates to forging mechanisms, and more particularly to gaging mechanisms for imparting to rock drill steels accurate gage and a particular conformation at their forward ends which has been found most desirable in practice' An object of my invention is to provide an improved forging mechanism. Another object of my invention is to provide an improved gaging die mechanism. A further object of my invention is to provide an improved gaging mechanism for use in the sharpening of drill, steels. object of my invention is to provide an improved hammer gaging mechanism for accurately imparting to the forward end of drill steels a special conformation and an accurate gage. A still further object of 'my invention is to provide improved gaging mechanism having improved means associated therewith for insuring the formation of bits of accurate gage. Other objects and advantages of my invention will hereinafter more fully appear.

In the accompanying drawings I have shown for purposesof illustration one form which my invention may assume in practice. p

In these drawings, a

Fig. 1 is a front elevation of a pairv of dies and the adjusting stop member consti tuting the illustrative form of my invention, a. fragment being brokenaway to show a detail of construction. 7

Fig. 2 is a section on theline 2-2 of Fig.1.

Fig. 3 is a sectionon the line 3+3 of Fig. 1, with parts shown in different positions.

Fig. & is a. front elevation of the stop member removed from its operative posi tion.

Fig.5 is a. section taken on the line- 5-5 It is a well known fact that rock drill bits are usually sharpened by a hammering process combined with a dollying process. For the'purpose of forming .thewings of the bits, swaging dies, illustrated herein at 1 and 2 are commonly used, these dies being provided with swaging surfaces 3 and 4. re-

A still further.

1922. Serial No. 549,897.

spectively, and grooves 5 and 6 to receive the more or less finished wings. These dies 1 and 2 are ordlnarily mounted in a drill sharpener with the die 2 secured in an anvil block while the die 1 is either positively reciprocated or hammered while in enin gage between successive steelsto be used in drilling, it is desirable to provide accu-. rate means for forming true reaming edges on drill steels and to permit without excessive consumption of time the accurate gaging of the steels.

For the purpose of simply accomplishing these desirable results I provide, herein upon the dies 1 and 2. gaging surfaces-9 and 10,

which surfaces will be noted to be of flatter transverse curvature at their forward ends than-at their rearward ends, the forward ends being indicated at 11 and the rearward ends at 12. It will further be noted from observation of Fig. 1 that the curvature at the ends of the gaging surfaces is flatter than, or lies outside of, circles correspond ing to minimum and maximum gages of steels which may be worked therein. these circles being markedA and B and the former coinciding with the outline of the stop hereinafter referred to. As a result of this construction. it will be found possible to form bits which have reaming edges lying in cylindrical surfacescorresponding to the gages of the different bits and, as at the extremes-of the surfaces 9 and 10, the onwatures are flatter than the maximum and minimum gag-es, obviously at intermediate points the same condition will prevail.

Now for the purpose of locating a bit accurately at different points along the space between die surfaces 9 and 10 I provide arotating handle 21,, cooperating with the" stop member 18 having a laterally pro cct: ing neck'l l -from which depends an arm la to which a nut herein. square in outline shown attached at 16. This nut gllliiifd in a generally rectangular channel 17 herein in a block l8 taste d to the s i V the die 2 and a screw 19 fixed against lonertudinal movement as at 20 and having threaded portion 22 of the member; i

permit forward and backward movement ot the stop member 13 l'ietween the dies. The forward "face of the stop member is provided with recesses of the correct :ontour to receive the sharpened ends of drill hits these grooves being designated Since the stop member is supported with its center midway between the dies when the latter are in their most proximate positions, it will be evident that the stop will accurately receive and support any gage oi drill hit.

From the foregoing description the mod of Operation of this dev ce will he readf apparent; When. it is desired to a small bit, the stop will be adjusted to a position nearly corresponding to that shown in 2. To gage a medium sized bit the stop will. be moved to a position as shown in'Fig. 3, while to gage a la? 'e s z'ul hit the stop will be moved still 'li'urther to the right in Fig; 3. It will he noted that the taper otthe die surtaces 9' and 10 is flatter than the original taper of the "forward of the drill bit and accordingly butrela tively little metal needs to be di placed to accurately gage the drill bits, and the forward ends of the drill bits are ve'n a ti: 4 r curvature than the supporting portions or the conical ends'ot the hits by means oi my improved gaging die. It will be obvious thatrit desired. any suitable tori-n oi ndex maybe employ-ed with the screw and nut mechanism, "as, for example by the placing? of graduations upon the top oi the member 18 which supports and guides the hlock 16. or by arranging suitable indexe to be driven by rotation of the crank 21. As these v v rious means will be readily llDAGTK lKIOtl-'i l'fili the description. no illustration is p While I have in this application sp cifically described one to mwhieh my invention may assume in practice. it will be u derstood that this form oi the same is shown for purposes of illustration and that the invention mav be modified and embodied invarious other forms without departing l'roirn its spirit or the scope of the appended claims.

What I claim as new and desire to. secure by Letters Patent is: r

o to,

,rected towards the same.

ing means for one of saiddies, means for reciprocating the other of said dies, a stop member movable between said dies, and a' support for said stop member including a block secured thereto and a guide for said block secured to the side of one of said dies. 2. Gaging mechanism comprising cooperating oppositely disposed dies eachhaving a gaging groove therein of. curved section and of flatter trans-verse curvature at one end than at the other, stationary supporting 1 means for one of said dies, means for reciprocating the other of said dies, an adjustable stop memberdisposed between said dies, and. a support for said stop member including a block secured thereto and a: mem her having a block, guiding channel formed therein secured to the stationary one of said dies with the/open side of said channel di- 3. Gaging mechanism comprising cooperating dies having oppositely disposed gaging grooves formed therein; said grooves'bei ng of curved section and of flatter transverse curvature at one end than at theother, stationary supporting means for one'o'fsaid dies, means for reciprocatingthe other of said dies, an adjustable stop memberdis posed between said dies, a support for said stop member including a block' secured thereto and a member having a block guiding channel formed therein and secured to one of said dies, and: means for adjusting said stop member including an adjustable screw and nut connection between the same and said member; r 4t. Gaging mechanism comprising cooper ating dies havingoppositely disposed gaging grooves formed therein, said grooves being of curved section and of flatter transverse 1 point stationary supporting means for one otsaid dies, means for reciprocating the other of said dies, an adjustable stop mom'- her disposed between said dies, a s upportfor' said stop member including a blo'clr secured thereto and a member having a' bloc-k guid ii'rf ing channel formed therein and secured-to" one of said dies, and means for adjusting said stop member includin threads formed in said hloclr and a rotatab y mou-nte'd screw 7 supported in said'member; 5. Gaging mechanism comprising cooper atin g dies having oppositely disposed 'ga'gine' grooves formed thereimsaid grooves hei of curved section and of flatter transv e curvature at one end thana-tthe othersta led tionary supporting means for one of said dies means forreci'procating the othcr'oit said dies, an adjustable stop member having" grooves formed in the rearwardly directed" face thereof to receive the extremities of the wings of a drill steel to be gaged thereby disposed between said dies,:a support for said stop member including a block secured thereto and a member having a block guiding channelformed thereon and secured to one of said dies, and means for adjusting said stop member includingthreads formed in said block and a rotatably mounted screw supported in said member.

6. Gaging mechanism comprising cooperating oppositely disposed dies each having a gaging groove therein of curved section and of flatter transverse curvature at one end than at the other, stationary supporting means for one of said dies, means forreciprocating the other of said dies, a stop member movable between said dies, and screw and nut means for adjusting said stop member disposed along a longitudinal side of said dies.

7 Gaging mechanism comprising cooperating oppositely disposed dies each having a gaging groove therein of curved section and of flatter transverse curvature: at one end than at the other, stationary supporting means for one of said dies, means for reciprocating the other of said dies, a stop member movable between said dies, and means for adjusting said stop member including a nut connected thereto and a stationary screw disposed at one longitudinal side of and adjustable from infront of said dies.

8. Gaging mechanism comprising cooperating oppositely disposed dies each having a gaging groove therein of curved section and of flatter transverse curvature at one end than at the other, stationary supporting means for one of said dies, means for reciprocating the other of said dies, a' stop member movable between said dies, and;

means for adjusting said stop member in cluding a plurality of 'movable adjusting means disposed along one longitudinal side of said dies, one of said movable means being rigidly connected to said stop.

9. Gaging mechanism comprising cooperating dies having relatively longitudinally fixed gaging surfaces, stop means for a steel associated with said dies and movable relative to said surfaces, and means for adjusting said stop means disposed entirely at one longitudinal side of said dies. 7

10. Gaging mechanism comprising cooperating gaging dies, stop means for a steel associated therewith, and means for adjusting'said stop means including a'plurality of adjusting members movable along a longitudinal side of said dies while maintaining an operative relation to said mechanisnn 11. Gaging mechanism comprising cooperating dies having a gaging groove, said dies having an opening disposed along the side of the same and in communication with said groove when said dies are 1n contact, stop element.

means disposed in said groove and having a portion projecting laterally through said opening, and means for supporting said. portion disposed entirely at one side of said dies.

12. Gaging mechanism comprising cooperating dies having a gaging groove associated therewith and provided with relatively longitudinally fixed gaging surfaces, adjustable stop means disposed within said groove,

means disposed only atone longitudinal side of said dies for supporting said stop means, and actuating means for said stop means in-' cluding a movable member disposed along said side.

18. Gaging mechanism comprising 'coope'ating dies having a gaging groove associated therewith and provided with relatively longitudinally fixed gaging surfaces,' adjustable stop means disposed therein, a member rigidly fixed to said stop, and ro-- tatable meanscooperating with said mem ber and adapted upon rotation said stop means.

15%. Gaging mechanism comprising cooperating dies having a gaging groove asso ciated therewith, adjustable stop means disposed therein, means providing a guiding to adjust groove and a guided member therein for supporting said stop means, and means for adjusting said latter means including rotatable and reciprocable members one of which has a portion disposed within said groove.

15. Gaging mechanism comprising cooperating gaglng dies having an opening in the side thereof, stop means associated with said dies including an arm extending through said opening and carrying a-nut, and a screw for said nut for adjusting said stop'means. I o

16. Gaging mechanism comprising coopcrating gaging dies having an opening in the side thereof, stop means associated with said dies including an arm extending through said opening and carrying a nut,

and a screw therefor disposed substantially tioning abutment elementhaving a portion adapted to engage a steel and another portion having an opening extending parallel, to the longitudinal axis of said steel engaging portion adapted to cooperate with relatively movable actuating means the movement of which imparts movement to said 18. Gaging mechanism comprising cooperating relatively longitudinally fixed gaging dies, adjustable stop means associated therewith, and means for supporting and holding said stop means in any adjusted po sition thereof disposed along the side of said dies, said means including an element disposed along said side and over which said stop means is movable.

1 Gagi'ng' mechanism comprising cooperating relativelylongitu dinally fixed gag- 6 ing dies, adjustable stop means associated therewith and:means for supporting and hokling said stop means in any adjusted position thereof disposed; along the side of'said dies, said means including an apertured arm and it shaft extending therethrough along 10 which said stop means moves.

In testitnoliyvl1ereof I affix my signature.

FRANK A. HALL-ECK;

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