US1203822A - Nut-making machine. - Google Patents

Description

W. L. WARD, H. D. REMSEN & E. C. BOERNER.

NUT MAKING MACHINE.

APPLICATION FILED APR. 27. 1912.

1,203,822. Patented Nov. 7, 1916.

4 SHEETS-SHEET I.

m: mmms PEI'EIS ca. PNOTO-LITNQ. WASHINGTON. n. c.

W. L. WARD, H. D. REMSEN & E. C. BOERNER.

NUT MAKING MACHINE.

APPLICATION FILED APR. 27, 1912.

Patented Nov. 7, 1916.

4 SHEETS-SHEET 2 "IL NuNms Psnws cm. Pnom u'rmz. msumamu. n c

W. L. WARD, H. D. REMSEN'& E. C. BOERNER. NUT MAKING MACHINE.

APPLICATION FILED APR. 27, i912.

1 03,822. Patented Nov. 7, 1916.

4 SHEETS-SHEET 3.

WITNESSES W. L. WARD, H. D. REMSEN & E. C. BOERNER. NUT MAKING MACHINE.

APPLICATION FILED APR. 27. 1912.

4 SHEETS-SHEET 4.

ATTORNEYS m: mom's PEYERS ca. FNOm-LIYNCL, wAsnlNcrvN, v c.

Patented Nov. 7, 1916.

@FFEQE WILLIAM L. WARD, HERBERT D. REIVISEH, AND EMILE C. BOERNER, 0F PORT CHESTER, NEW YORK, ASSIGNORS T0 RUSSELL, BURDSALL & WARD BOLT AND NUT CO., OF

PORT CHESTER, NEW YORK, A CORPORATION OF NEW YORK;

NUT-MAKING- MACHINE.

Specification of Letters Patent,

Patented Nov. *7, 1916.

Original application filed. June 27, 1910, Serial No. 569,053. Divided and this application filed April 27, 1912. Serial No. 693,604.

To all whom it may concern:

Be it known that we, WILLIAM L. WARD, HERBERT D. REMsEN, and EMILE C. BOERNER, citizens of the United States, residing at Port Chester, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Nut- Making Machines, of which the following is a full, clear, and exact description, such as Will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to means instrumental in the production of nut blanks from stock bars, such as that disclosed and claimed in a co-pending application, filed June 27 1910, Serial No. 569,053, patented February 24, 1914, No. 1,088,192, of which this application is a division, and the subject-matter herein claimed refers more especially to the mechanism used for feeding the stock bar to the first acting punches which divide the same into a multiplicity of blanks.

As introductory to a more detailed dis cussion of the essentially novel features, arrangements and combinations underlying the commercial utility of this apparatus, it may be preliminarily noted that, for various reasons known to those skilled in this art, it is desirable to produce nut-blanks fromcommercially available stock bars of an in- 5: expensive character by operations effected under normal temperatures and wlthout the;

necessity of shaping the material while in a highly heated condition. The rapid produc tion of high grade hexagonal nut blanks from, such an ordinary stock bar by means of an essentially automatic unitary apparatus as free as possible from delicate, involved 01%, awkwardly related parts or sub-mechanisms,

part pointed out hereinafter and in part and requiring but little attention, has been the goal for which those commercially en gaged in the art of making nuts have long striven.

It is exceedingly desirable that 1 Now, this invention has in contemplation an automatic feed mechanism which not only constitutes a component sub-combination of the general machine, but also embodies numerous features and arrangements enabling it to feed a stock bar in the manner required by the working elements of the machine to attain the greatest efficiency.

A more specific object of this invention is to so construct the mechanism for initially feeding in the stock-bar that the same will not only positively and accurately operate, but also so that it will be a simple matter for the operator to disengage the stock bar whenever, by chance, the mechanism should operate imperfectly or when it is desirable to make a hand adjustment, as at the time a new bar is being introduced into the machine.

Another object is to so devise the stock bar feeder that damaged parts may be readily replaced and adjustments may be made for wear, and to so construct the same that, in case the progress of the stock bar is obstructed and the feed thereof thus prevented.

'the feeder will not be damaged but merely a readily sheared.

It is also an object of this invention to employ a horizontally reciprocating vise mechanism for feeding the stock bar and to so arrange and construct a lever for driving the same that the intermediate pivot or fulcrum thereof may be adjustably positioned to vary the stroke of the lever, and also enable the pivotal connection between the lever and the sliding vise mechanism to be adjusted as desired.

Other objects and advantages will be in replaceable safety pin will be rendered apparent by means of the accompanying illustrations.

The lnvention accordingly consists 111 the such automatic machinery as may be inventfeatures of construction, combinations of ed for doing this shall be as simple, compac and serviceable as possible, and to attaii this end the various component mechanisms elements and arrangement of parts which vill be exemplified in the construction herenafter set forth, and the scope of the apor sub-combinations thereof should bede '3 plication of which will be indica in the vised especially for close relationship anc mutual coactlon with the other elements oi the machine.

following claims.

To promote a full understanding as to the manner in which this invention may be carried out, drawings exemplifying a preferred embodiment have been appended as a part of this disclosure, and in such drawings like characters of reference denote corresponding parts throughout the several views, of Wl11Cl1 Figure 1 is a plan view of one corner of the unitary machine showing in detail the construction and arrangement of the stock bar feeder; Fig. 2 is a side elevation of the stock bar feeder looking in the direction of the movement of the stock bar as it is fed into the machine, as indicated by the arrow on said bar shown in Fig. 1; Fig. 3 a

general assembly of the entire machine showing the manner in which the herein described feeding mechanism is combined with and related to the various elements of such machine, and Figs. & and are details. r Continuing now by way of a more detaileddescription, it may be preliminarily 15 totravel vertically up and down during ,m-ore clearly from Figs. 1 and 2.)

stated that the characters of reference used herein correspond with those employed in the parent case for the purpose of facilitating the identification oi correspondingele ments.

The stock bar feeder consists of a gripping means in the nature of a vise and a translating means for reciprocating such vise. The grippingmeans comprises a rock 'leverhaving actuating end 14c and an actuated end 10, which latter carries a roller riding within the cam groove 9, (as appears As the shaft '6 turns in the direction indicated by the arrow B, the actuated end 10' rocks up and down, and this produces a correspond-- ing movement in the actuating end 1 1:. This lever'is pivoted at an intermediate point by means of a pivot bolt 11, which is sup, ported at its outer end by means of an uprising plate 12, which latter plateis boltcd to lugs 13 which extend from the main frame of the machine. lvlountedon the e. :t 'cmity of the arm I i of the rocker lever is the toe or hearing piece 15 designed o actuate the cam controlling the bar gripiing mechanism. This toe 1s detachably secur d in place, as by means of bolts, so t theoperation of the gripping mechanism.

The] toe 15 passes through the stationary bearing block 25 and enters a horizontally. elongated recess, indicated by dotted line 27 AS shown, this toe projects Fig.v 2), in the sliding main piece, or

block 20 forming a main part of the feed ing mechanism. Inasmuch as this block, or member 20 must be capable of reciprocating or translating horizontally a distance equal to that 01 the feed of the stock bar, the recess indicated by dotted line 27 will be sufliciently long horizontally to avoid interference with the rounded extremity 16 of the toe 15. This extremity 16 resembles in shape a wide ear tooth and closely interfits within an open channel horizontally formed in a vertically recipr eating cam 17. This 7 cam or hearing piece is carried by the block 20 and is capable of moving up and down,

as indicated the arrows D, independently of the position of the block 20; but on the other hand it is pos tively CflII'lQCl'lIl a horizontal. direction along with said block 20.

To'that end the cam 1'? provides on either sidean elongated guide or gib 18 which secures the cam 17 to the block '20, and yet enables it to freely rise and fall, 2'. 6., slide up and down therein. The cam 17 is rela-:

tively narrow, and to enable its engagement with the gearlike extremity 16 of the toe 15 to be maintained, such eXtrein1ty'16 1S fully ecual in width to the distance through 7 iv} 'ch the stock bar is fed.

- It may here be stated that the recess indicated by dotted lines in the sliding or translating block 20 necessarily exceeds in height the distance through which the cam 17 is.

reciprocated. by means of the toe 15.

The camportion of the vertically reciproeating cam- 17 indicated by 19 and cooperates with a roller 32 indirectly carried by a swinpin massive arm 30. The block 20 Z as has been stated, reciprocates horizontally and 1s 'shdably supported on the guide or bcaring'block 25. To that end, upper and lower cap plates 21' and 22 are securely bolted to the block 20 by'means of bolts and 24, so that these three pieces recipro" cate as a .unit.

Means are provided for adjusting and taking upwear, as clearly appears from Fig. 2. V I

Extending from the block 20 are two'lugs 28, in which is'journa-led the lever pin 29,

which in turn supports the massive swing ing arm, or member 30, the members 20 and 30 being thus looselyarticulated, so, as to enable the latterto have a limited] angular movement, asindicatedfby the arrow E. This movement s utilized in gripping the stock bar and is produced throughthe instrumentality ofrthe cam 17 and the parts which will now be described.

A block31' is mounted in a counterpart recess'in the lower end of the massive SY VHIg ing arm 30 and has acertain' amount of possibleplay which. is permitted on the one hand by a spring and limited on'theiother hand by a suitable'adjustable stop, pre- 'venting the same from protruding too far under the influence of such spring. This 1 part 31 carries the roller 32 which coacts with the cam 19, and 34 indicates the spring which is housed within a suitable recess 33 and is capable of being adjusted as to tension by means of the screw cap 35. A stem 36 extends from the part 31 and passes freely through the cap screw 35 and is provided externally with a pair of lock nuts 37 so that the outward movement of the part 31 may be positively limited, while the inward movement which necessarily more or less varies in extent, due to irregularities in the stock bar, is taken care of by the powerful spring 34. From this it will be perceived that when the cam 17 is depressed by means of the toe 15, the roller 32 rides up the cam incline 19 and through the pressure of the spring 34 urges the lower end of the member 30 outwardly, and correspondingly urges the upper end of such part 30 in the opposite or inward direction. It is this latter end that is utilized in gripping the stock bar. The upper end of the arm 30 provides two integral lugs 38 and 39, which are spaced apart, as shown. Quite snugly, yet slidably fitting within a recess in the lug 39, is a vise block 41, which is preferably backed by means of a block 42, which in turn is positively positioned by means of the hub 43 of the hand lever 44. The block 42 and the hub 43 provide counterpart cams in their ad acent faces, which cams are clearly illustrated by Figs. 1 and 2 and are so constructed that when the hand lever 44 is swung down so as to rest on the horizontal rest 45, the block 42 will be crowded outwardly, whereas when the arm 44 is moved through 90 degrees, the block 42 may be drawn back somewhat by means of the shaft 46 and the spring 47 thereby easing up the pressure between the vise block 41 and the stock bar. An immovable vise jaw 40 is detachably secured to the top plate 21 in some suitable manner, such as by setting the same in a recess in the top plate 21. By this instrumentality, should it be desired to stop the feeding of the stock bar temporarily without stopping the entire machine, or should it be desired to adjust the extent of entry of the stock bar in the machine (as when a new bar is required), the operator, by lifting the handle 44, can release the vise jaws from the stock bar, irrespective of the position of the feeding mechanism, and thereupon the freed stock bar can be manually adjusted in position. Upon turning the handle 44 to its normal position, the machine will be ready to resume its cycle of operations.

The feeding means for horizontally reciprocating the vise-bearing top plate 21 will now be described. It may here be noticed that it is highly desirable to so construct 65 and arrange the elements controlling the reciprocations of the stock-bar vise, as to enable adjustments to be easily made whereby the extent and periodicity of the automatic feed may be regulated and accurately determined. To that end, this invention proposes a multi-part lever 48 which at one end carries the roller 49 which coacts with the circumferential cam 8. This lever is pivotally supported at an intermediate point and has its free end, so to speak, connected with the top plate 21 of the feeding structure. The relation between these three points will determine the character of the feed and therefore means have been adopted to enable this relation to be varied within reasonable limits. Thus, the bolt 50 constitutes the intermediate pivot or fulcrum of the lever 48, but this bolt is so arranged and constructed as to be capable of being secured in various positions. This construction is very clearly shown in Figs. 4 and 5, from which it will be seen that the lower end of the bolt passes through a shelf-like portion 13 extending from the main frame of the machine. This portion 13 is provided with a rectangular recess into which is fitted the block 50 and below this block is located the slot 55 through which the shank of the bolt 50 passes. A nut 50 serves to lock the bolt and block in position against movement. For the purpose of facilitating adjustment, the adjusting bolt 50 is pro vided and said bolt is rotatably mounted in the frame portion 13 and has a screwthreaded shank in engagement with the block 50", so that by turning the bolt said block may be shifted in position. The upper end of the bolt 50 passes through a detachable lug 51 which is in turn adjustably secured to the main frame by means of bolts 52 passing through suitable slots shown more clearly by Fig. 1. In this way the position of the bolt 50 with respect to the main frame may be varied at will. The lever 48 is also adjustably mounted in the saddle block 53 by means of bolts 54 which are adapted either directly or through the in strumentality of an insert-piece, to clamp the snugly fitting part 55 of the lever 48 in a corresponding aperture in such block 53. It is to be understood that the pivot bolt 50 has its bearing directly on the swinging block 53 and passes through the elongated aperture, indicated by dotted lines 55 in Fig. 1. From this, it will be readily understood that the exact position of the pivot bolt '50 may be very readily secured.

At this point attention is directed to a safety appliance employed in connection with the feed mechanism. It may occasionally happen that either because of a fa lure to sufficiently clear away the metal cut from the forward end of the stock bar. or for other reasons, the forward progress of the stock bar will be unduly or even positively obstructed, and to prevent the feeding mechanism from being damaged or fractured by reason of its inability to advance the stock bar, this invention contemplates so constructing the lever 4:8 that a suitably positioned safety pin, amply strong for all ordinary purposes, will be sheared and thus prevent rupture of this lever or other element of the feed mechanism. To that end, the forward or actuating end of the lever 4. 8 terminates somewhat short and extends in the form of the extension piece 56, which is pivoted to the same by means of a strong bolt 57. A clamping block 58 which engages a circular lip 59 which is integral with the forward end of theelever, also assists in positioning these parts. Adjacent the extremity of the forward end, is an. aperture 49 which enlarges toward the try with the corresponding aperture in the extension piece 56. A safety pin 49" fits in and is retained by these alined apertures, 'sothat in case the pressure becomes at any time excessive, this pin may be readily sheared and may then be replaced by a duplicate part. Thisinvention also embodies means for adjusting the relativeposition of a pivot bolt 60 which is directly instrumental in connecting the sliding vise block 21 with the actuating lever. The extension piece 56 is provided with a square recess adjacent its end, within which is adjustably positioned a block 62 which is clamped in place by means of the nut 61 on the pivot'bolt 60. It will from this be readily'perceived that it is a very simple matter to so adjust the lever 48 as to feed the vise block 21' and its associated parts through any desired feed spacing.

The operation of the stock bar feed mechanism will be obvious from the foregoing, but may be briefly recapitulated as follows: Assuming the parts to be in the position '45 shown by Fig. 1, in which the stock bar feeder is in the advanced position, the further rotation of the main shaft 6 will raise the lever end 14, thus uplifting the cam 19 and permitting the arm 30 to swing back 50 to ease up the clamping pressure on the stock bar. 7 so designed that the roller 49 will now be causedto move toward the frame of the machine so as to swing the other end'of the lever 48 in the opposite direction and thereby move the released gripping vise along the stock bar a distance corresponding to the 7 length of a blank. During this withdrawal 5 of the vise the stock bar is not moved, but at the'end'of the backward stroke the cam .9 operates on the lever arm 10 t'o-actuate the part 18 and thus cause the cam 19 to outwardly move the roller'32 and swing the arm 30 into a position adapted to grip the stock bar. Thereupon'the circumferential under surfaceof such part and is in regis- The circumferential cam 8 is cam S acts on the roller 49 tojswing the lever 48 in a direction such that. the vise will be advanced as indicated by the upperhead of the arrow C, and thus feed the stock bar into the machine a distance corresponding to the length of a nut blank. This brings the end of the stock bar opposite the shearingofl' punch 1', so that as the latter new advances a nut blank will be sheared from the end of the stock bar. It will be noticed that this shearing-off punch extends forwardly some little distance beyond the forward extremity of the perforating punch 9.,sothatthe shearing-0H punch will perform its function just before the perforating punch operates. When the perforating punch advances to perforate the stock bar near its end, it may be observed that the stock bar is deformed and elongated through the action of the perforating punch to an extent sufficient to cause the end of the stock bar to bind unduly against the shearing-off punch dur-' ing the withdrawal'of the, latter. It will be understood that the shank of theshearing off punch is slightly undercut and that this head. To prevent this action, however,this

invention proposes a construction whereby the stock bar is retracteda slight distance 7 just after the perforating punch has been drawal of the shearing punch. Thisis accomplished by providing the circumferentialv cam 8 with aslight undercut 8 so that the roller 419' will be given a slight movement toward the frame of the machine just after 05 withdrawn, thereby alfording'a freewith the perforating.punchfhasbeen withdrawn,- thereby effecting a slight retraction of the f stock bar duringthe withdrawal of the shearing-off punch.

From the foregoing it will be perceived that this invention effectively achieves several objects and advantages above outlined, and that as a result thereof aunitary feeding mechanismis rendered availablewhichmay be utilized in various connections, and

especially in the'relationship outlined with jaw-supporting memberfabout an axis in parallelism with the movement of said jaw supporting member, a lever terminating at 4 one end in a horizontally elongated bearing piece adapted to swing up and down with said lever, acam in "engagement with sald bearing piece and said arm whereby the.

samel'may be oscillated with the ene a fall f ll-It 7 binding action would take place near its of said bearing piece, and means for reciprocating said jaw-supporting member and oscillating said lever at appropriate periods.

2. A mechanism of the nature disclosed, comprising a drive shaft, a facecam arranged on one end thereof, a circumferential cam arranged adjacent said face cam, a lever horizontally oscillated by said circumferential cam, a jaw-carrying member horizontally reciprocated by said lever, a second lever vertically oscillated by said face cam, and means actuated by said second lever to enable a stock bar to be clamped and advanced during a forward reciprocation of said member, said bearing piece engaging said cam throughout the reciprocatory path of said j aw-supporting member.

3. A mechanism of the nature disclosed, comprising a member adapted to reciprocate in a horizontal direction, a jaw carried thereby, a second member pivoted to said reciprocating member about an axis parallel with the direction of movement of said reciprocating member, a jaw carried by said second member, a spring-pressed part car ried by said second member, a cam mounted to vertically move in said reciprocating member and adapted to actuate said second member through said part to cause said jaws to move into gripping position, a vertically oscillating arm terminating in a horizontally elongated bearing piece having a sliding bearing with said cam, and means for reciprocating said first mentioned member and vertically oscillating said last-mentioned lever.

4:. A mechanism of the nature disclosed,

comprising a vise mechanism adapted to bereciprocated in a horizontal direction, a power shaft having a circumferential cam, a lever connected at one end to said vise mechanism and at the other end cooperating with said circumferential cam, an intermediate fulcrum bolt, adjustable mountings for said fulcrum bolt, a block having a pivotal relation with said fulcrum bolt, and means for adjustably securing said lever to said block.

5. A mechanism of the nature disclosed, comprising a drive shaft, a circumferential cam thereon, a lever cooperating at one end with said cam, a pivot adjustably secured to said lever at an intermediate point, adjustable bearings for said pivot, an extension piece adjustably secured to the free end of said lever, a vise mechanism adapted to be reciprocated, and an adjustable bearing connecting said vise mechanism with said extension whereby the former may be actuated by the latter.

6. A mechanism of the nature disclosed, comprising a reciprocating vise mechanism, a drive shaft having a cam, a lever oscillated by said cam, a rocking block slidably engaging with an intermediate portion of said lever, means for locking the two together, an adjustably positionable pivot block journaled in said rocking block, and adjustable means connecting said vise mechanism with said lever.

7. A mechanism of the nature disclosed, comprising a reciprocating vise mechanism, a drive shaft carrying a cam, a lever arm having one end connected with said cam and adjustably pivoted at an intermediate point, an extension piece overlapping and bolted to one end of said lever, a clamping piece bolted to said extension piece and overlapping an end lip of said lever, and means adjustably pivoting said extension piece to said reciprocating vise mechanism.

8. A mechanism of the nature disclosed comprising a pair of jaws for gripping stock, automatic means for bringing said jaws into gripping contact with said stock, means for moving said jaws to advance said stock a predetermined distance, means for automatically moving said jaws to retract said stock a short distance, and means for thereafter releasing said jaws and retracting the same a predetermined distance preparatory to again gripping and advancing said stock.

9. A mechanism of the nature disclosed comprising, in combination, a bearing block, a pair of loosely articulated members movably supported by said bearing block, means adapted to reciprocably translate said members, gripper jaws onsaid respective members, means adapted to cause relative approaching movement of said gripper jaws comprising a cam movably mounted on one of said members, a spring adapted to transmit pressure from said cam to one of said jaws, and independent hand-controlled means adapted to cause relative separating movement between said jaws.

10. A mechanism of the nature disclosed comprising, in combination, a bearing block having a transverse aperture, a pair of loosely articulated members movably supported by said bearing block, one of said members having a recess opposite said aperture, means adaptedto reciprocably translate said members, gripper jaws on said respective members, means adapted to cause relative approaching movement of said gripper jaws comprising a cam reciprocably mounted on said recessed member, a rock lever having one end projecting through said aperture into said recess, and connectlons between said end and said cam whereby the latter is positively moved by said.

lever in each direction of said latters reciprocation.

11. A mechanism of the nature disclosed comprising, in combination, a bearing block, a pair of loosely articulated members movably supported by said bearing block, means adapted to reciprocably translate said members comprising a rock lever, gripper jaws on said respective members, means adapted to cause relative approaching movement of said jaws comprising a cam movably mounted on one of said members, a spring adapted to transmit pressure from said cam to one of said jaws, adjustable mountings for'the fulcrum of said lever, and an adjustable pivotal connection between said lever and one of said articulated members, said lever comprising portions connected by a frangible pin adapted to give way under abnormal strain against the reciprocation of said members.

12. A mechanism of the nature disclosed comprising, in combination, a bearing block, a pair of loosely articulated members movably supported by said bearing block, gripper jaws on said respective members, means adapted to cause relative approaching movement of said jaws transversely of the direction of movement of said members on said block comprising a cam mounted on one of said members to move transversely of the direction of the movement of said members on saidblock, a spring adapted to transmit pressure from said cam to one of said jaws, a drive shaft, circumferential and face cams thereon, and rock levers operatively connected to said last-mentioned cams and to one of said members and said first-mentioned cam, respectively.

13. A mechanism of the nature disclosed comprising, in combination, a bearing, a pair of pivotally connected members mounted to reciprocate on said bearing, gripper jaws on the respective members, and means adapted to cause relative pivotal movement of 7 said memberscomprising a relatively'movable cam on one member, a bearing piece on said other member with which said cam is adapted to contact, a spring between said bearing piece and said other member and an adjustable stop adapted to vary the position of said bearing piece relatively to said cam.

let. A mechanism of the nature disclosed comprising, in combination, a bearing, a pair of pivotally connected members mounted to reciprocate on said bearing, gripper jaws on said'respective members, one of saidjaws being movable relative to its respective member, manual means adapted to be positioned to fix saidj aw against movement relative to its respective member away from said other jaw and to permit such movement, and means adapted to cause relative pivotal movement of said members comprising a relatively movable cam on one member, a

bearing piece on said other member with i which said cam is adapted to contact and a spring between said bearing piece and said other member.

of pivotally connected members mounted to said other and to permit such movement, spring means adapted to move said jaw relative to its respective member in a direction away from said other jaw in a predetermined position of said manual means, and means adapted to cause relative pivotal movement of said members'comprising a relatively movable cam on one member, a bearing piece on said other member with which said cam is adapted to contact and a spring between said bearing piece and said other member.

r 16. A mechanism of the nature disclosed com-prising, in combination, a bearing, a pair of pivotally connected members'adapted to reciprocate on said bearing, one of said members providing a gripper j aw, a guide on said other member, a gripper jaw movable in said guide, a lug on said latter member spaced from said guide, a hub rotatably' mounted between said lug and said movable gripper jaw, said hub having a cam face adapted tourge said movable jaw toward said other jaw, and means adapted to cause relative pivotal movement of said members.

17. A mechanism of thenature disclosed comprising, in combination, a bearing, a pair of pivotally connected members mounted to reciprocate on said bearing, gripper jaws on said respective members, and means adapted to cause relative pivotal movement between said members comprising a relatively movable cam on one member, a roller on said other member with which said cam is adapted to contact and a spring between said roller and said other member.

18. A mechanism of the'nature disclosed said respective member's, means adaptedto' reciprocably translate saidmembers, acam relatively reciprocably' mounted on one member adapted by said relative reciprocal movement to cause said jaws to app-roach and permit them to recede from each other, a lever so operatively connected to. said cam as to positively cause said relative reciprocal movement, and means adaptedto oscillate said lever. a r r f V 7 19. A mechanism of the nature disclosed comprising, in combination, a pair of pivotally connected members, gripper jaws on said respective members, means adapted to reciprocably translate said members, a cam relatively reciprocab-ly mounted'on one mem ber adapted by said relative reciprocal'movement to cause said jawsto approach and permit them to recede from each other, and means adapted to cause said reciprocal move ment of said cam comprising an oscillatory lever and a toe and channel engagement between said lever and said cam.

20. A mechanism of the nature disclosed comprising, in combination, a pair of pivotally connected members, gripper jaws on said respective members, means adapted to reciprocably translate said members, a cam relatively reciprocably mounted on one of said members adapted by said relative reciprocal movement to cause said jaws to approach and permit them to recede from each other, and means adapted to cause said reciprocal movement of said cam comprising a lever and a toe and channel engagement between said lever and said cam, one of said toe and channclengaging elements being coextensive with the amplitude of translation of said members.

21. A mechanism of the nature disclosed comprising, in combination, a bearing block, a pair of loosely articulated members movably supported by said bearing block, means adapted to reciprocably translate said members, gripper jaws on said respective members, means adapted to cause relative approaching movement 0]": said gripper jaws comprising a cam movably mounted on one of said members, a spring adapted to transmit pressure from said cam to one of said jaws, and independent hand-controlled means adapted to cause relative separating movement between said jaws.

22. A mechanism of the nature disclosed comprising, in combination, a bearing block a pair of loosely articulated members movably supported by said bearing block, means adapted to reciprocably translate said 1nembers, gripper jaws on said respective memhere, means adapted to cause relative ap- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

It is hereby certified that in Letters Patent No. 1,208,822, granted November 7, 1916, upon the application of William L. Ward, Herbert D. Remsen, and Emile C. Boerner, of Port Chester, New York, for an improvement in Nut-Making Machines, errors appear in the printed specification requiring correction as follows: Page 5, line 3, claim 1, strike out the period and insert a comma and the Words said beaming piece engaging said cam throughout the reciprocatory path of said jawsupporting member.; same page, line 15, claim 2, strike out the comma and insert a period, and, same line and claim, commencing with the word said strike out all to end of claim; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 16th day of January, A. D., 1917.

[sEAn] W. H. CLAY,

Acting Commissioner of Patents.

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