US724966A - Gaining-machine. - Google Patents

Description

No. 724,966. BATENTBD APR. 7, 190s.

`J. M. STRUBEL'. GAINING MACHINE.

APPLICATION FILED NOV. 19, 1902.

y 3 SHELTS-SHEET;

No. 724,966. I PATENTED APRl 7, 1903. J. STRUB'EL. GAINING MACHINE.

APPLICATION FILED NOV. 19, 1902.

H0 MODEL. 3 SHEETS-SHEET 2;.

JTW/fontes? N0. 724,966. 1 PATENTBD APR. '1, 190s.

' J. M. STRUBBL.

GAINING MACHINE.

. APPLICATION FILED NOV. 19, 1'902. i

N0' MODEL. l I 3 SHEETS-fsHEET 3.

UNITED STATES PATENT EEICE.

JOSEPH M. STRUBEL, OF YOUNGSTOWN, OHIO.

'eArNINe-IVIACHINE.v

SPECIFICATION forming part of Letters Patent No. 724,966, dated April 7, 1903.-

Application and November 19,l 1902. seria] No. 131,994.. (No man.)

To all whom it may oorwernn Be it known that I, JOSEPH MJSTRBEL, a* citizen of the United States, residing at .Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Gaining-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention -relates to woodworking-machines of the type designed for gain or mortise cutting Work, and more particularly to a machine especially constructed and adapted for cutting the gains or mortises in a doorjamb and door forthe reception of the hinge or butt leaves. y

Ordinarily the cutting of hinge gaius orV mortises through the instrumentalityof the usual tools is a laborious operation, besides being subject to considerable inaccuracy, 'depending upon the skill and care of the operator. In the carrying out of ihisoperation the carpenters usually employ a try-square, a knife for scoring or marking purposes, two gages to determine the size and depth of the gain or mortise, a chisel, and a hammer for driving the chisel in cutting out the wood. The use of the separate tools necessarily consumes considerable time in the cutting out of a set ofggains or mortises for afsingle door and doorway, besides not permitting the carpenter to properly compensate for inaccuracies in the position of the jamb-such, for instance, as the same being out of plumb either perpendicularly or horizontally, as frequently occurs, and under whichconditions the door will bind or swing unevenly. This always has to be corrected by planing the door or its casing.

The present invention is designed to er1-l tirely overcome the above objections to the ordinary method of cutting hinge gains or mortises, while at the same time providing a machine-whereby this operation may be entirely completed with absolute accuracy in a few minutes time.

With this general object in View the invention contemplates a simple, practical, and reliable form of hinge gaining or cutting machine readily and accurately applied to a doorjamb or door andl embodying every adjustment necessary to. the same for cutting gains or mortises of differentividths, lengths, and depths.

Also the machine contemplated by the present invention embodies means for being trued or squared against the jamb o1' door edge to insure the cutting of the gain or mortise at perfect right angles thereto, and,furthermore, the machine provides for insuring the cutting out of the gain or mortise in perfect parallelism to the face of the jamb or door in the event of the latter being out ot' true transversely. This is accomplished through the medium of a tiltable mounting for one of the cutters.

With these and many other objects in view,

which will more readily appear as the nature of the? invention is better understood, the same consists in the novel construction, combination, .and arrangement of parts, which will be hereinafter "more fully described, illustrated, and claimed. v The essential features of the invention involved in the novel mounting and adjustment of the separate right-angularly-related cutters' are necessarily susceptible to modication without departing from the spirit or scope of the invention; but a preferred embodiment of the latter -is shown in the accompanying drawings, in Which- Figurel is a 'front elevation of a hinge- Vgain-cutting machine constructed in accordthe cutter constituting the cut-out chiseLi Fig. 6 is a detail sectional View on the line 6 6 of Fig. 1showing more plainly the tiltable mounting and adjustment for the carriage-base carrying the cut-out chisel. Fig.

7 is a detail sectional view showing more plainly the function of the squaring-guides in conjunction with the door-jamb, which projects beyond the casing, to insure a squaring of the machine against such jamb and not against the casing. Fig. S is a sectional elevation on the line 8 8 of Fig. 2. Fig. f) is a detail in perspective of the form of cuttercarrying slide associated with the base member of each carriage. Fig. 10 is a detail sectional view on the line lO 10 of Fig. G. Figs. 1l, 12, and 13 are diagrammatic views of the face or edge of a door-jamb, showing the positions to which the cutters are adjusted in scoring and cutting out the hinge gain or seat.

Like reference characters designate corresponding parts throughoutthe several figures of the drawings.

In carrying out the present invention there is employed in connection with a common supporting-frame a pair of right-angularlyrelated cutters, one designed to perform the function of a shaping and scoring knife and the other as a cut-out chisel or knife for removing the body of material to provide the gain or mortise. These separate cutters are also designed to have an independent mounting upon the supporting-frame and to be associated with instrumentalities permitting of their adjustment in a number of different directions in order that the machine may be readily and accurately adjusted to cut gains or mortises of different widths, lengths, and depths, and, infact, meet every condition that would exist in connection With this class of work. IVhile the various structural details exhibited in the drawings are necessarily largely-illustrative and susceptible to modification, still as a practical form of the invention is shown by the drawings particular reference will now be made thereto.

The supportingframe, upon which are mounted the various instrumentalities of the machine, is designated in its entirety by the letter F and is designed to be of such a construction as to permit of the same being placed astride the door-jamb or door edge and to be clamped rigidly thereto for holding the machine rm and accurate in place while the scoring or cutting out of the gain or mortise is taking place. The main supporting-frame F may therefore be properly termed a slipporting clamp-frame7 and is of approximate U form in longitudinal section, as plainly shown in Figs. 2 and 7 of the drawings.

Preferably the supporting-frame is of skeleton formation and is of a general rectangular shape in elevation, the same consisting of suitably united and braced members, certain of which perform special functions, as will be particularly pointed out. With reference to its applied position-for instance, upon the door-jamb-the frame F is provided at the ends or, more properly speaking, at the corners thereof with the rearwardly-projecting holding-arms 1, which are arranged in parallelism to each other and are disposed in oppositely-located pairs, the said opposite pairs of the holding-arms being respectively designed to take over or embrace the opposite side portions of the door-jamb or door.

In order to provide for securely clamping the frame to the object, the holding members or arms thereof are designed to be equipped with suitable clam ps or clam ping means, which bind against the adjacent sides of the object. A simple and practical expedient for effecting the clamping of the frame in its applied position is shown in the drawings and consists in associating with each pair of the holding-arms 1 a clamping-bar 2, working at the inner sides of the arms, and whose ends are suitably secured to the supporting plates or heads 3, to which are swiveled the inner ends of the clamp-screws et, passing through threaded openings or nuts in the holding-arms 1 adjacent to the clamping'bar. This clamping equipment being the same for each pair of the holding arms or members 1, it is obvious that after the machine-frame is placed astride the edge of the object in which the gains or mortises are to be cut a tightening up of the clamp-screws -1 in the several holding-arms will serve to bind the clamping-bars 2 rmly against the sides of the object, as plainly shown in Figs. 2 and '7 of the drawings, and will thus rigidly hold the machine in place during the shaping, scoring, and cutting out of the gain.

In connection with the clamping means for holding the machine-frame upon the object, whether such object be the door-jamb or the ydoor itself, there are also utilized as an attachment for the frame detachable guide-blocks 5, adapted to be fitted in the corners of the frame against the edge of the object in which the gains or Inortises are to be cut. These guide-blocks are preferably held to the rear sides of the front guide-bars (5 through the medium of the fastening-screws or equivalent fastening devices 7 passing through such bars, whereby the said blocks 5 may be removed or replaced, according to the arrangement of door-jamb and casing to which the machine may be applied.

In most instances the door-jamb .I projects beyond or outside of the casing sides, (marked C in Figs. 2 and 7 of the drawings,) and consequently as the gains or mortises are to be cut in the face and edge of the jamb .I it is necessary that the machine-frame be trued or squared against such jamb and not against the casing, thereby obviating inaccuracies in the hanging or swinging of the door, which otherwise might occur. By reason of the employment of the guide-blocks 5 within the corners of the machine-frame, at one end thereof, when such machine-frame is placed astride the jamb, which projects beyond the casing side C, the said guide-blocks will abut against the edge of the jamb in which the gain or mortise is to be cut and will register in the angle formed by the projection of the jamb beyond the casing. After firmly placing the guide-blocks in such position, and thus squar- IOO IZO

ing or trning the frame with reference to the jamb J, the clamping-bars 2 may be tightened up against the casing sides to hold the frame in position. In other instances where there is no projection of the jamb beyond the casing sides the guide-blocks 5 may be dispensed with and removed entirely from the frame by loosening up or taking out the fastenings 7 therefor. l

The skeleton supporting-frame F, in addition to having projected from one side thereof the holding-arms 1, is provided at the front with the opposite parallel front guide-bars 6, arranged in proper spaced relation and extending from one end of the frame to the other, said front guide-bars being provided with the longitudinal guideways or grooves 8, preferably of dovetail formation. Also at one end the said supporting-frame F is further provided with the supplemental guidebars 9, which may constitute continuations of the pair of holding-arms 1 at one end of the frame and are disposed at right angles to the plane of the front guide-bars 6, said supplemental end guide-bars 9 being also provided in the faces thereof with the longitudinally-disposed guideways or grooves lO, preferably of dovetail form and extending from end to end of thebars 9 for the purpose to be presently explained.

The separate right angularly disposed guide- bars 6 and 9 provide for the slidable and adjustable mounting of the front and end cutter- carriages 11 and 12, respectively, which carriages in turn provide vfor the adjustable mounting of the separate right-angularly-related cutters-namely the shaping and scoring knife 13 and the cut-out chisel 14. The individual mounting and equipment for each cutter is preferably substantially the same, inasmuch as each cutter is designed to have the same number of adjustments and also to be manipulated in substantially the same way to preserve uni-formity in the operation of the machine to provide for cutting out a gain or mortise.

Referring in the rst place to the mounting of the cutter constituting the shaping and scoring knife 13, it will be observed that the front carriage 11 for this cutter or knife essentially comprises a flat base member 15, preferably in the form of a plate arranged edgewise with reference to the front of the machine-frame 5 and extending transversely and entirely across the frame, as may be plainly seen by reference to Figs. 1, 2, and 8 of the drawings. VThe carriagealso includes, inaddition to the transversely-arranged base member or plate 15, the slidable guidingblock-s 16,-of dovetail form and slidably moving in the longitudinal guideways or grooves 8 of the front guide-bars 6, and saidv transverse base member of the carriage is suitably fastened to the guide-blocks 16 and may also be held rigid in proper relation tothe frame through the medium of braces 17, extending from one side thereof to the blocks 16.' Other equivalent means may be employed for rigidly uniti'ng the base member of the carriage to the guiding-blocks 16, which constitute the carriage-slides, and permit adjustment of the carriage longitudinally of the supportingframe. Various expedients maybe resorted to in elfecting this longitudinal adjustment of the carriage; but this may be accomplishedconvenient-ly through the medium of a carriage-adjusting screw 18, mounted to turn in a stationary nut 19, carried by one of the end bars 20 of the machine-frame, and having a swiveled connection 21 at its inner end with a transverse connecting-bar 22, constituting a part of the framework of the carriage 11, which may conveniently connect the opposite carriage-slides 16.

The base member or plate 15 is provided in one side thereof with a slideway 23, extending longitudinally thereof f rom end to end and preferably formed between a pair of parallel guide-strips 24, having undercut or beveled edges 25, providing a slideway of dovetail form which is designed to slidably receive therein a correspondingly-shaped cutter-carrying slide 26 in the form of a block, which in turn has slidably interlocked therewith the cutter 13, which constitutes the shaping and scoring knife. Any suitable slidable interlocked connection may be provided between the cutter 13 and the slide or slideblock 26, supporting the same upon the adjustable carriage 11. A practical construction for eecting this mounting is shown in the drawings and consists in providing the cutter-carrying slideV or slide-block 26 upon the outer side thereof with a pair of spaced shouldered keys or gibs 27, having-an interlocked slidable engagement withthe longitudinal guiding-slots 28, formed longitudinally in the main blade of the cutter or knife 13 and extending substantially the entire length thereof to give the cutter or knifev all the play that may be desired or required,

From -the foregoing it will be obvious that the adjustable mounting of the carriage 11 permits the same to be moved in a direction toward and from the edge of the object in which the gain is to be cut, while the movement of the cutter-carrying slide or slideblock 26 longitudinally of the carriage-base 15 permits the cutter or knife 13 to be moved up and down (with reference to the applied position of the machine) to adapt the same to a gain or nlortise of any length, and the independent longitudinal movement of the cutter or knife 13 transversely 'of the carriage-base l5 permits of the inward movement of the cutter or knife in shaping and scoring out the gain or mortise. The extent of adjustmentl which may be necessary for the carriage 11 is accurately determined through the medium of an indicating-scale 29, provided upon the front of the frame andl conveniently upon one'or-both of the front guide-bars 6, said scale orscales bei'ng'employed in connection with oneof the trans- IOO IIO

verse parts of the carriage, so that the same may be adjusted toward or from the edge of the object in which the gain is to be cut to the precise degree required, according to the width of the gain. A corresponding adjustment of the shaping and scoring knife 13 according to the length of the gain is ldetermined through the medium of the lateral knife-stops 30, which are adjustably mounted in any suitable manner upon the carriage base or plate 15, respectively above and below the cutter or knife 13, as plainly shown in Fig. 8 of the drawings. These lateral knife-stops may be conveniently in the form of blocks slidably mounted upon one of the guiding-strips 24 of the slideway 23 and held in any adjusted position through the medium of a set-screw or equivalent fastening 31. To insure accuracy in the adjustment of these stops, according to the length of the gain to be cut, the strip or portion of the carriagebase upon which they are mounted is preferably provided with an indicating or gage scale 31". 1n connection with the adjustment and gaging of the cutter or knife 13 still further provision is made for regulating the depth of penetration thereof into the wood. This is effected throughthe medium of adepthgage of suitable form. In the drawings an illustrated form of depth-gage is shown and consists of a stop-block 32, slidably mounted upon a scaled edge portion 33 of the individual blade itself and held to any adjusted position within the extent of such scale through the medium of a set-screw or equivalent fastening 34.

The cutter 13, constituting the shaping and scoring knife, essentially consists of a main cutting-blade 35, having an inner beveled cutting edge 36 and adjacent to and coperating with such inner beveled cutting edge, the oppositely-located side cutter-wings 37 projecting at the same side of the blade 35, from opposite edges thereof, and whose cutting ends are beveled to correspond tothe inner cutting end of the main blade 35, thus producing a U-shaped form of cutting-head at the inner end of the blade 35, which provides for shaping and scoring out the ends and angles of the gain or mortise in the inanner to be further explained.

One of the objects of the present invention is to provide a construction wherein a hammer is not employed to force either cutter into the Wood. A separate cutter-actuator is employed for this purpose, and referring still to the cutter 13, constituting the shaping and scoring knife, the actuator for forcing this knife in and out with reference to the doorjamb or object preferably consists of a screw 38, operating against the outer end of the cutter or knife 13 and mounted for adjustment in a nut-arm 39, formed at the outer end of a movable actuator-carrier 40, which may be conveniently in the form of a bracket provided With the oppositely arranged slidehooks or equivalent slide members 41, which slidably interlock with and work upon the inner and outer edges of the fiat base member or plate 15 of the carriage 11, thus providing a form of carrier for the actuator 38 which will have an adjustment corresponding to the up-and-down adjustment of the cutter 13 between the oppositely-located stops 30.

Referring to the mounting of the cutter 14, constituting the cut-out chisel or knife, the said cutter is associated with the end cuttercarriage l2. This carriage essentially consists of the flat base member or plate 42 and the slidable guiding-blocks 43, moving in the guideways or grooves 10 of the supplemental end guide-bars 9 and constituting the slides for the said end cutter-carriage 12. An advantageous feature of the invention resides in the manner of associating the base member or plate 42 with the slides 43 therefor, in order that the said plate, with the attached parts, may be tilted in the event of the face of the jamb or object being out of true in a transverse direction, and thereby permitting the gain or mortise to be cut out in parallelism to the untrue face. This may be conveniently accomplished by providing a pivotal or hinge-joint connection 44 between the inner edge of the base member or plate 42 and the carriage-slides 43. (See Fig. 10.)

Any suitable type of knuckle or equivalent joint connection 44 may be provided for the member or plate 42, whereby the same may be tilted or moved in either direction from its ordinary right-angular disposition with reference to the end bars 9 of the frame F, and in order to control the tilting adjustment of the base member or plate 15 suitable adjusting means are associated therewith. These adjusting means may consist simply of setting-screws 45, mounted in threaded nuts or openings 46, provided upon or in suitable supporting-brackets 47, rigidly attached to and olset from the carriage slidesor blocks 43 at one side of the base member or plate 42. At one end the said setting-screws 45 have a suitable swiveled connection 46 with the said base member 42 in order that the latter will respond to the adjustment of the screws 45 andwill be held set at the desired angle which may be required bythe condition of the object to which the machine is applied. Similar to the base member 15 of the carriage 11 the said base member 42 of the carriage 12 is provided in one side thereof with a longitudinal slideway 48, which accommodates therein a cutter-carrying slide or slide-block 49, provided with the offset shouldered keys or gibs 50, which slidably interlock with the longitudinal guiding-slots 5l, formed in the blade of the cutter or knife 14. The said base member or plate 42 is also provided with a member or portion having thereon a gagescale 52, corresponding to the scale 31 of the carriage 1l, and also having fitted thereon the lateral knife-stops 53 in the form of adj ustable blocks held in their adjusted spaced relation through the medium of set-screws or IOC equivalent fastening devices 54. The cutter or knife 14 is also provided With the scaled edge portion 54a, uponwhich is adjust-ably mounted a depth-gage or gage-block 55,which corrresponds to the depth-gage 32 for the cutteror knife 13, in order to accurately regulate the depth of penetration of the cutter.

The movement of the cutter 14 into and out of the gain or mortise is accomplished throngh-` the medium of a cutter-actuator similar to that employed in connection with the shaping and scoring cutter, said actuator consisting of an adjusting-screw 56, operating against the outer end of the cutter or knife 14 and mountedin a nut-arm 57, formed at the outer end of a movable actuator-carrier 5S, preferably in the form of a bracket provided lwith oppositely-located slide-hooks or equivalent slide members 5S), interlocked with and slidably engaging the side edges of the base member or plate 42. The adjustment of the carriage 12 itself is accomplished by substantially the same means as that employed for the carriage 11- namcly, through the medium of a carriageadjusting screw 60, Working in a stationary nut 61, fitted to the end bar 62 of the frame and havinga swiveled connection 63 at its inner end with a transverse connecting-bar 64. This transverse connecting-bar 64 is a part of the carriage 12 and is rigidly connected With the opposite slides or blocks 43. y

Suitable explanation has already been made in reference to the clamping of the machine upon an object and the utility of the guideblocks 5 and the tilting adjustment of the individual supporting-base of the carriage 12. Hence, assuming the machine to be in its applied .position upon the object, as shown in Figs. 2 and'of the drawings,with allof the gages or gage-stops properly set according to the scales with which they are associated, vit Will be-observed that the carpenter first determines the width of the gain through the adjustment ofthe carriage 11 and then moves the shaping and scoring knife13 up against the lateral knifestop 30, which determines the position of the shaping and scoring knife for scoring out the upper part of the gain, as lwill be indicatedvby the suggested position I shown in diagrammatic Fig. 11. After the upper part of the gain shown in Fig. 11 is scored out by forcing the knife 13 in- Ward the knife is Withdrawn and dropped down against the lower gage 30, and then again moved into the object, as indicated'by position II in diagrammatic Fig. 12. The knife 13 therefore has entirely scored out the gain, as shown in Fig. 13,1With a .transverse cut or score between the top and bottom edges of the gain, so that it only becomes necessary4 to operate the cut-out chisel 14 rst in position I and then in position II, as shown in Fig. 13, which provides for lifting out the material to provide the complete gain or mortise.

In applying the'machinc to the edge of al door it will of course only be necessary to arel range suitable filling-blocks vvithin the frame to permit of the same being clamped tightly in a position substantially as shown in Fig. 2. It will also be understood that the machine may be applicable to such other gaining purposes as the same might be adapted to without changing the essential features herein indicated.

From the foregoing it is thought the construction, operation, and many advantages of the herein-described gaining-'machine Will be readily apparent Without further description, and it will also be understood that various changes in the form, proportion, and. minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

Having thus described the invention, What is claimed, and desired to be secured by Let' ters Patent, is-f- 1. In a machine of the class described, a su pporting-frame having projected from one side thereof oppositely-arranged holding members, those at one end of theframe constituting guides, a clamping device carried by the oppositely-located holding members, separate.

carriages movable in planes at right angles to each other and one of which is slidably mounted upon the holding member constituting guides, and an independently-adjustable cutter associated with each carriage.

2. In a machine of the class described, a supporting-frame having clamping means for engagement With the object, right-angularlyrelated cutters, and separate guide-blocks tted as an attachment in the corners at one end of the frame and arranged for engagement against a projection beyond the portion of the object engaged by the clamping means.

3. In a machine of the class described, a su pporting-frame having offset from one side thereof oppositely-arranged clamping means for engagement With the object, right-angularly related cutters, and separate guideblocks detachably held against the inner side of the frame and fitted as an attachment in the corners at one end thereof, said guideblocks being-arranged for engagement against a projection beyond the portion of the object engaged by the clamping means.

4. In a machine of the class described, a supporting-frame having separategnide members, and separate cutter-carriages slidably mounted upon the guide members and movable in planes at right angles to each other,

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and each of Which carriages is provided with l gularly-related guides, separate cutter-carriages arranged perpendicularly to the guides andf movable thereon in planes at right angles to each other, and a critter associated with each carriage and having an independent adjustable movement thereon in different directions.

6. In a gaining machine, a supporting- .frame having separate guide members disposed at right angles, separate cutter-carriages slidably mounted upon the separate guide members, and each of which is provided with a base memberdisposed transversely of the frame, and a cutter for each carriage havingan independent movementboth longitudinally and transversely of said hase member.

7. In a gaining machine, a supportingframe having right-angularly-related separate guide members, separate cuttercarriages slidably mounted upon the separate guide members, independent means for regulating the adjustment of each carriage, a cutter carried by each carriage and having an independent movement both transversely and longitudinally thereof, adjustable stops above and below the cutter for limiting the movement thereof longitudinally with reference to the carriage, and an adjustable stop or gage carried by the cutter and cooperating with the carriage forlimiting the movement of the ou tier in a direction transverse of the carriage.

8. In a gaining machine, a supportingframe havingseparat-e righ t-angularlyrelated guide members, separate cutter carriages slidably mounted upon the said guide members and each having a base member perpendicularly to the guides, independent adjusting and regulating means for each carriage, a cutter associated with the base member of each carriage and having an independent movement both longitudinally and transversely with reference to the length of the cutter, gage-stops adjustahly mounted upon the base member of each carriage and arranged to limit the independent transverse movement of each cutter, and an adjustable gage mounted upon each cutter and arranged to gage the independent longitudinal movement thereof.

9. In a gaining machine, a supportingframe havingseparate right-angularly-related guide members, separate carriages slidably mounted upon the guide members and each having a base member, a cutter carried by the base member of each carriage and having alongitudinal and transverse movement, and a cutter-actuator associated with each cutter and having a member shiftable upon the base member of the carriage to conform to the independent transverse adjustment of the cutter.

10. In a gaining-machine, a supportingframe having separate right-singularly-related guide members, separate cuttercarriages slidably mounted upon the guide members and each having a base member, a cutter carried by the base member of each carriage and having independent movement both longitudinally and transversely, and an actuator for each cutter comprising a bracket shiftably connected with the base member and an actuating-screw carried by the bracket and coperating With the cutter.

l1. In a gaining-machine, a supportingframe having oppositely-arranged front and end guide-bars disposed at right angles to each other and provided with longitudinal gnideways or grooves, separate front and end cutter-carriages having slides engaging the gnideways of their respective guide-bars,each cutter-carriage being further provided with a base member disposed transversely of the frame and provided at one side with a longitudinal slidcway, a cutter-carrying slide working Within the slideway of the base member of each carriage and having keys or gibs, a cutter for each carriage having slots slidably interlocking with the keys or gibs ofthe cutter-carrying slide, an independent actuator carried by each cutter and adjustable with the cutter, and gages for regulating the various adjustments of both cutters.

12. In a gainingmachine, a supportingframe, a front and au end cutter-carriage mounted upon the frame and movable in planes at right angles to each other, each of said carriages having a cutter-carrying member, and means for changing the angle of the cutter-carrying member of one of the carriages.

13. In a gaining-machine, a supportingframe, a front and an end cuttercarriage mounted upon the frame and movable in planes at right angles to each other, each of said carriages having a cutter-carrying member, and means for changing the angles of the cutter-carrying member of the end carriage.

14. In a gaining-machine, a supportingframe having separate guide members disposed at right angles to each other, separate cutter-carriages slidably mounted upon said guide members and movable in planes at right angles to each other, the end cutter-carriage embodying a jointed connection to permit of tilting adjustment for the base member, and the separate right-angularly-related cutters respectively carried by the separate carriages.

l5. In a gaining-machine, a supportingframe having separate rightangularly-related guide members, cutter-carriages mounted upon the separate guide members and each having a carriage-slide and a cutter-carrying base member, the cutter-carrying base member of one carriage having a jointed hinge connection with the slide therefor, a stationary support also carried by the slide for the adjustable base member, and an adjusting device carried by said stationary support and cooperating with the jointed base member.

In testimony whereof I affix my signature in presence of two Witnesses.

JOSEPH M. STRUBEL. tVitnesses:

HENRY E. COOPER, GERTRUDE S. ROY.

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